CN112120852B

CN112120852B - Falling-proof device for clinical nursing

Info

Publication number: CN112120852B
Application number: CN202011113295.5A
Authority: CN
Inventors: 职梅; 石俊静; 康小文
Original assignee: Xinxiang Central Hospital of Xinxiang Zhongyuan Hospital Management Center
Current assignee: Xinxiang Central Hospital of Xinxiang Zhongyuan Hospital Management Center
Priority date: 2020-10-17
Filing date: 2020-10-17
Publication date: 2022-12-27
Anticipated expiration: 2040-10-17
Also published as: CN112120852A

Abstract

The invention relates to a clinical care anti-falling device, which effectively solves the problem that when a wheelchair is used for transferring a patient with inconvenient legs and feet and the patient encounters a bumpy road section, the patient is more likely to fall off the wheelchair; the technical scheme of the solution comprises: the device can realize spacing to patient's waist through setting up two arc limiting plates of mutually supporting, the emergence of the condition of having avoided turning over forward when the downhill path highway section, another, when patient's buttock slides forward along the wheelchair cushion, can realize pressing from both sides tight and the size along with gliding distance and corresponding change the tight dynamics of clamp to patient's shank through a plurality of friction arcs, when following the friction arc tight to patient's shank, the angle of adjustable loading board and make the loading board be close to walking back of the chair partial downwardly rotating, in order to realize preventing that patient's buttock from continuing to follow the gliding effect of loading board forward.

Description

Falling-proof device for clinical nursing

Technical Field

The invention relates to the field of clinical care protection, in particular to a clinical care anti-falling device.

Background

In hospitals, when medical care personnel need to transfer patients who are inconvenient to move (legs and feet cannot walk), a wheelchair is often needed to achieve the effect of transferring the patients, so that the workload of the medical care personnel is reduced, and the efficiency of treatment and examination on the transition of the patients is further improved;

however, when some road surface is uneven, the buttocks of the patient slide forward along the wheelchair cushion to be in a lying state due to the jolt of the wheelchair and the fact that the legs of the patient cannot support the upper body forcefully, and if medical personnel do not adjust the posture of the patient in time, the buttocks of the patient may completely fall off from the wheelchair cushion, so that the patient falls off from the wheelchair, and the body of the patient is further damaged;

furthermore, the existing wheelchair is basically not provided with a limiting mechanism for limiting the waist of the patient, if medical care personnel encounter a long downhill section in the process of transferring the patient, the body of the patient is in a forward tilting state, if the patient is not aware of the situation slightly, and in addition, the patient is in an inconvenient state, the patient can directly turn forwards from the wheelchair, so that the falling situation occurs, the waist of the patient can be further damaged, and the risk of secondary damage to the patient is greatly increased;

in view of the above, we provide a clinical care fall arrest device to solve the above problems.

Disclosure of Invention

In view of the above situation, the invention provides a clinical care fall-prevention device, which can limit the waist of a patient by arranging two arc limiting plates which are matched with each other, so that the situation of forward turning is avoided in a downhill road section, and in addition, when the hip of the patient slides forwards along a wheelchair cushion, the leg of the patient can be clamped by a plurality of friction arc plates, the clamping force on the leg of the patient is correspondingly changed along with the sliding distance, the angle of a bearing plate can be adjusted while the leg of the patient is clamped by the friction arc plates, and one end part of the bearing plate close to a backrest of a walking chair is downwards rotated, so that the effect of preventing the hip of the patient from continuously sliding forwards along the bearing plate is realized.

A clinical nursing falling-proof device comprises a walking chair and is characterized in that a bearing plate is rotatably arranged on the walking chair, two arc-shaped frames are transversely arranged on the bearing plate at intervals, one end of each arc-shaped frame along the arc extending direction is transversely and rotatably arranged on the bearing plate and is connected with an active driving device arranged on the lower end face of the bearing plate, a movable arc-shaped plate which is coaxially arranged with the arc-shaped frames is longitudinally and slidably arranged in the arc-shaped frames, a telescopic spring is connected between the movable arc-shaped plate and the arc-shaped frames, a clamping plate is radially and slidably arranged on the movable arc-shaped plate, an indirect transmission device matched with the clamping plate is arranged on the movable arc-shaped plate, a driving spring is connected between the indirect transmission device and the clamping plate, and a positioning device for positioning the clamping plate is arranged on the movable arc-shaped plate,

the indirect transmission device is connected with an arc rack which is rotatably arranged on one longitudinal side wall of the arc frame and is coaxially arranged with the arc frame, the arc rack is driven by a driven driving device fixed on the bearing plate, the movable arc plate is provided with a detection arc plate along the radial direction thereof in a sliding manner, a detection spring is connected between the detection arc plate and the arc frame, the arc frame is provided with an active limiting device for limiting the detection arc plate, the other end of the two arc frames along the arc extending direction is provided with an induction device, and when the two arc frames move to corresponding positions, the active limiting device can be controlled to relieve the limitation of the detection arc plate;

be provided with detection device and detection device electric connection on the arc frame and have loading board drive arrangement, control loading board drive arrangement and drive the loading board and rotate certain angle when detection device detects the movable plate and removes, it is provided with the unlocking device who is used for relieving positioner to the clamp plate location and relieves the location to the clamp plate when detecting that the arc is contradicted in the human body to detect the arc near loading board one end.

Preferably, a rectangular cylinder installed in a sliding fit with the clamping plate is arranged on the movable arc-shaped plate, the indirect transmission device comprises a first gear installed in the rectangular cylinder in a rotating mode, a first rack vertically installed in the rectangular cylinder in a sliding fit mode is meshed with the first gear, the driving spring is connected between the clamping plate and the first rack, the first gear is connected with a first belt pulley group arranged in the rectangular cylinder, the first belt pulley group is installed on the arc-shaped frame in a rotating mode and is connected with a second gear meshed with the arc-shaped rack, and the second gear shaft is connected with the first belt pulley group in an axial sliding fit mode.

Preferably, the clamping plate comprises a connecting rod which is vertically and slidably mounted in the rectangular cylinder, and a friction arc plate which is coaxially arranged with the arc frame is fixed on the connecting rod.

Preferably, be provided with the locking device to removing the locking of arc on the arc, locking device has the locking gear of rotation installation in the arc including the locking rack and the locking rack meshing of slidable mounting in two arc frame cooperation one end, the locking gear meshing has the lockplate of slidable mounting in the arc frame and is connected with the locking spring between locking rack and the arc frame, it is provided with arc butt joint board outwards to stretch out arc frame one end an organic whole with lockplate matched with locking hole and locking rack about establishing on the removal arc.

Preferably, be equipped with on the arc frame with detect arc sliding fit's U-shaped chamber, initiative stop device establishes ties in first steady voltage circuit including first electro-magnet and the first electro-magnet that is fixed in U-shaped chamber roof, it is fixed with the iron sheet to detect the arc up end, two arc frame matched with one end is provided with the chamber that holds that is used for holding locking rack, lockplate, locking gear, induction system is including installing in holding the intracavity and with the first trigger switch of locking rack matched with, first trigger switch electric connection has the break-make in first steady voltage circuit of first microcontroller and first microcontroller control, and we set for when locking device just loses the locking to removing the arc, first trigger switch is triggered.

Preferably, it is connected with one-way transmission and one-way transmission that sets up on the arc frame and is connected with the detection arc to remove the arc, and one-way transmission satisfies: when the moving arc-shaped plate is not moved, the one-way transmission device is not contacted with the detection arc-shaped plate, when the detection device detects that the moving arc-shaped plate moves, the detection arc-shaped plate is driven to move through the one-way transmission device, the detection arc-shaped plate is integrally connected with a touch plate, and a touch rod matched with the touch plate is fixed on the connecting rod,

detect in the arc with the axle center rotate install two butt joint poles and two butt joint between the pole be connected with the butt spring, slidable mounting has set-square and set-square to be connected with the electric putter of fixed mounting in the butt joint pole, U-shaped chamber lateral wall is provided with the butt groove with set-square matched with, and electric putter extension just makes set-square butt and butt inslot when detecting the arc and contradict in the human body.

Preferably, a longitudinally extending one-way rack is fixed on the outer arc surface of the movable arc plate and meshed with a fourth gear, the one-way transmission device comprises a first worm which coaxially rotates with the fourth gear and is meshed with a first worm wheel rotatably mounted on the arc frame, the first worm wheel drives a second worm rotatably mounted on the U-shaped cavity through a second pulley group, the second worm drives a second worm rotatably mounted on the U-shaped cavity, the second worm wheel is connected with a third pulley group, the third pulley group drives a meshing and disengaging device arranged on the U-shaped cavity, the meshing and disengaging device drives a third gear rotatably mounted on the U-shaped cavity and the third gear drives a third rack fixedly connected with the movable arc plate, and when the detection device detects that the movable arc plate does not move, the meshing and disengaging device is in a disconnected state.

Preferably, the unlocking device comprises an unlocking arc plate and an unlocking spring, the unlocking arc plate is vertically slidably mounted on the lower end face of the detection arc plate, the unlocking spring is connected between the unlocking arc plate and the detection arc plate, a second trigger switch matched with the unlocking arc plate is arranged in the detection arc plate, the second trigger switch is triggered when the unlocking arc plate completely slides into the detection arc plate, the second trigger switch is electrically connected with a second microcontroller and controls the positioning device to lose the positioning of the clamping plate, and the second microcontroller controls the electric push rod to extend.

Preferably, the engagement and disengagement device comprises a first engagement plate which is coaxially fixed and rotates with the third gear, the first engagement plate is matched with a transmission shaft driven by the third belt pulley group, a second engagement plate matched with the first engagement plate is axially and slidably mounted on the transmission shaft, an engagement spring is connected between the second engagement plate and the transmission shaft, a second electromagnet is fixed on the transmission shaft and is connected in series in the second voltage stabilizing loop, and an iron sheet is fixed on one side of the second engagement plate, facing the second electromagnet;

the detection device comprises: the electric push rod is electrically connected with the third microcontroller, when the movable arc plate stops moving, the third microcontroller controls the electric push rod to contract, when the movable arc plate stops moving, the third microcontroller controls the electric push rod to extend, and the priority of the second microcontroller for controlling the electric push rod is higher than that of the third microcontroller.

Preferably, the bearing plate driving device comprises driving racks fixedly arranged on the two transverse sides of the longitudinal end of the bearing plate and meshed with driving gears rotatably arranged on the walking chair, one of the driving gears coaxially rotates to form a driving worm wheel and the driving worm wheel is matched with a driving worm rotatably arranged on the walking chair, and the driving worm is driven by a rotating motor and is electrically connected with a rotating motor controller and a third microcontroller.

The technical scheme has the beneficial effects that:

the device can realize spacing to patient's waist through setting up two arc limiting plates of mutually supporting, avoided the emergence of the condition of turning over forward when the downhill path section, another one, when patient's buttock slides forward along the wheelchair cushion, can realize pressing from both sides tight and the size that is along with gliding distance and corresponding change the tight dynamics of clamp to patient's shank through a plurality of friction arcs to patient's shank, when being along with the friction arc presss from both sides tight to patient's shank, the angle of adjustable loading board and make the loading board be close to walking backrest tip downwardly rotating, in order to realize preventing that patient's buttock from continuing to follow the gliding effect of loading board forward.

Drawings

FIG. 1 is a schematic view of two arc-shaped racks of the present invention disposed under a carrier plate;

FIG. 2 is a schematic view of another perspective of the present invention when two arc-shaped frames are disposed under the carrier plate;

FIG. 3 is a schematic view of the two arc-shaped frames of the present invention rotating upward;

FIG. 4 is a schematic view of the two arc frames of the present invention moving to the engaged position;

FIG. 5 is a schematic view of the walking chair with wheels removed from the chair according to the present invention;

FIG. 6 is an enlarged view of the structure at the position A;

FIG. 7 is a schematic view of the relationship between two arc-shaped frames and a supporting plate according to the present invention;

FIG. 8 is a schematic view of the present invention with the two arc frames not yet moved to the engaged position;

FIG. 9 is an enlarged view of the structure at B of the present invention;

FIG. 10 is a schematic view of a positioning device according to the present invention;

FIG. 11 is a partially cut-away schematic view of the inner structure of the arc-shaped frame of the present invention;

FIG. 12 is a schematic view showing the connection between the carrier plate and the driving rack according to the present invention;

FIG. 13 is an enlarged view of the structure at position C of the present invention;

FIG. 14 is a schematic view of the one-way clutch of the present invention;

FIG. 15 is a schematic view of a rectangular cylinder according to the present invention with a partially cut-away internal structure;

FIG. 16 is a schematic view of the connection rod and the rectangular cylinder of the present invention;

FIG. 17 is a schematic view of the driven connecting rack, the arc rack and the arc frame of the present invention separated from each other;

FIG. 18 is a schematic view of another aspect of the unidirectional actuator of the present invention;

FIG. 19 is a schematic view of the mating relationship of the unlocking arc and the detection arc of the present invention;

FIG. 20 is a schematic view of the engagement between the abutting rod and the abutting groove according to the present invention;

FIG. 21 is a schematic view of the triangular plate, the electric push rod and the abutting rod of the present invention.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which reference is made to the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Embodiment 1, this embodiment provides a clinical care fall-preventing device, as shown in fig. 1, comprising a walking chair 1, characterized in that we have a loading board 2 (i.e. a cushion of the walking chair 1, so that the patient sits on the walking chair 1) rotatably mounted on the walking chair 1, as shown in fig. 3, we have two arc-shaped frames 3 laterally spaced on the loading board 2, two arc-shaped frames 3 transversely rotatably mounted on the loading board 2 along one end of the arc-shaped extension direction and connected with an active driving device arranged on the lower end face of the loading board 2, initially, when the device is not in use, two arc-shaped frames 3 are arranged on the lower end face of the loading board 2, as shown in fig. 2, if the patient needs to sit on the wheelchair and is on a relatively flat road surface (e.g. when transferring indoors, there is no need to move the two arc-shaped frames 3 upwards, the patient sits directly on the loading board 2 and is not affected by the arc-shaped frames 3), when the patient needs to limit the patient sitting on the walking chair 1 to be transferred on the loading board 2 by the lower end face of the loading board 2, as shown in the figure 2, we have a gear wheel connected to a rotating gear rack connected with a rotating mechanism 59, and the rotating gear mechanism connected with a motor connected with a rotating gear wheel connected with a rotating mechanism 59, as shown in the rotating end face of the rotating mechanism 59, wherein the rotating mechanism 61, and the rotating mechanism connected with the rotating mechanism 61 connected with the motor at one end face of the rotating gear 5, the clamping motor 57 drives the first reversing gear 60 and the other clamping gear 59 through the clamping pulley set 58 connected with the clamping motor 57, that is, when the clamping motor 57 starts to work (rotates forward or reversely), the clamping pulley set 58 can drive the two arc-shaped frames 3 to synchronously rotate towards the upper end face of the bearing plate 2 or synchronously rotate towards the lower end face of the bearing plate 2 (the rotating directions of the two arc-shaped frames 3 are opposite);

referring to fig. 13, we install a moving arc 4 coaxially with the moving arc in the arc frame 3 in a longitudinal sliding manner, and connect a telescopic spring 5 between the moving arc 4 and the arc frame 3, we install a clamping plate 6 on the moving arc 4 in a radial sliding manner, we install an indirect transmission device matched with the clamping plate 6 on the moving arc 4, and connect a driving spring 7 between the indirect transmission device and the clamping plate 6, we initially install a positioning device for positioning the clamping plate 6 on the moving arc 4, referring to fig. 11, we connect the indirect transmission device with an arc rack 8 rotatably installed on one longitudinal side wall of the arc frame 3 and coaxially with the arc frame 3, in this scheme, the arc rack 8 is rotatably installed on one longitudinal side wall of the arc frame 3 through a driven connecting rack 66 fixedly connected with the arc rack (as shown in fig. 17, driven connecting rack 66 we set up to the arc and set up with the axle center of arc frame 3 equally), we are provided with the driven drive arrangement who is used for driving arc rack 8 on loading board 2, namely, driven drive arrangement can realize driving driven connecting rack 66 and rotate along the vertical lateral wall of arc frame 3, driven drive arrangement includes fixed mounting in loading board 2 lower terminal surface and with the circular arc rack 62 that the axle center set up of clamping gear 59, we rotate on link 61 and install first driven gear 63 and first driven gear 63 drive with circular arc rack 62 meshing have the driven pulley group 64 that sets up on link 61, driven pulley group 64 drive has the second driven gear 65 that rotates and install on link 61 and with driven connecting rack 66 meshing, namely, start work and drive two arc frames 3 by loading board 2 lower extreme towards loading board 2 upper end pivoted process on loading board 2 when clamping motor 57 starts work In the process, the driven connecting rack 66 is synchronously driven by the arc rack 62, the first driven gear 63, the driven pulley group 64 and the second driven gear 65 which are matched with each other to rotate along the arc frame 3 corresponding to the driven connecting rack, so that the effect of driving the arc rack 8 to rotate is realized, and the indirect transmission device is driven to operate along with the rotation of the arc rack 8, because the driving spring 7 is connected between the indirect transmission device and the clamping plate 6, and the clamping plate 6 is initially positioned (namely cannot move freely) by the positioning device arranged on the movable arc plate 4, when the indirect transmission device is driven to operate by the arc rack 8, the driving spring 7 connected between the clamping plate 6 and the indirect transmission device is continuously compressed by the indirect transmission device (at the moment, the driving spring 7 is continuously compressed to store energy);

referring to fig. 13, we have a detecting arc 9 installed on a moving arc 4 in a sliding manner along a radial direction thereof, referring to fig. 19, we have a detecting spring 10 connected between the detecting arc 9 and the moving arc 4 (the detecting spring 10 is connected to the outer circular surfaces of the detecting arc 9 and the moving arc 4, as shown in fig. 17), we have an active limiting device on an arc frame 3 for limiting the detecting arc 9 (it should be noted here that we set the detecting spring 10, so that the detecting spring 10 is in a stretched state when the detecting arc 9 is limited under the action of the active limiting device), and we have an induction device at one end of the two arc frames 3 far from a connecting frame 61, and the induction device and the active limiting device are matched to satisfy the following requirements: when the two arc-shaped frames 3 are driven by the clamping motor 57 to move to the corresponding positions (i.e. when the two arc-shaped frames 3 are driven to move from the positions shown in fig. 4, at this time, one ends of the two arc-shaped frames 3 far away from the connecting frame 61 fixedly connected with the two arc-shaped frames 3 are abutted against each other), the sensing device can control the active limiting device to release the limiting of the detection arc-shaped plate 9, and the detection arc-shaped plate 9 is enabled to move towards the direction close to the human body under the action of the detection spring 10, when the detection arc-shaped plate 9 is abutted against the human body, the positioning of the clamping plate 6 is released through the unlocking device arranged on one side of the detection arc-shaped plate 9 close to the bearing plate 2, because the driving spring 7 is compressed and stored energy at this time, the driving spring 7 drives the clamping plate 6 in a free state to move towards the direction close to the human body and realizes the clamping effect on the legs of the patient, as shown in fig. 4, the bearing plate 6 can be abutted against the legs of the patient under the action of the driving spring 7, thereby realizing the clamping and the situation that the bearing plate falls from the chair 1 when the patient's buttocks are bumped and prevented from the road section;

preferably, a detection device is arranged on the arc-shaped frame 3 and is electrically connected with a bearing plate 2 driving device, when the detection device detects that the movable arc-shaped plate 4 moves along the arc-shaped frame 3, the bearing plate 2 driving device can be controlled to drive one end, close to the backrest of the walking chair 1, of the bearing plate 2 to rotate downwards, so that the movable arc-shaped plate 4 can move along the arc-shaped frame 3, a clamping plate 6 which is abutted against the leg of the patient is indicated, under the driving of the leg of the patient (when the clamping force of the clamping plate 6 on the leg of the patient is insufficient to limit and clamp the leg of the patient, when a bumpy road section is encountered, the hip of the patient and the bearing plate 2 can relatively move, namely, the hip of the patient can slide along the bearing plate 2 in the direction away from the backrest of the walking chair 1), because the clamping plate 6 is slidably mounted on the movable arc-shaped plate 4, when the buttocks of a patient relatively move along the upper end face of the bearing plate 2, the movable arc-shaped plate 4 is synchronously driven to move in the arc-shaped frame 3 corresponding to the movable arc-shaped plate (at the moment, the telescopic spring 5 connected between the arc-shaped frame 3 and the movable arc-shaped plate 4 is compressed), when the detection device detects that the movable arc-shaped plate 4 moves, the bearing plate 2 is driven by controlling the driving device of the bearing plate 2 to downwards rotate close to one end of the backrest of the walking chair 1, so that the buttocks of the patient are driven to synchronously rotate along with the bearing plate 2, at the moment, the height of the buttocks of the patient is lower than that of the legs of the patient, and the buttocks of the patient can be effectively prevented from continuously moving along the bearing plate 2 and towards the direction far away from the backrest of the walking chair 1;

when a patient needs to leave the walking chair 1, at this time, the controller of the clamping motor 57 controls the clamping motor 57 to rotate reversely and synchronously drive the two arc-shaped frames 3 to rotate towards the direction away from each other, so that the two arc-shaped frames 3 rotate from the positions shown in fig. 4 to the positions shown in fig. 2, when the two arc-shaped frames 3 start to rotate towards the direction away from each other from the positions shown in fig. 4, one ends of the two arc-shaped frames 3 away from the connecting frame 61 fixedly connected with the two arc-shaped frames start to change from the interference state to the disengagement state (as shown in fig. 3, a certain instant state that the two arc-shaped frames 3 rotate towards the direction away from each other is adopted), the sensing device is set to lose control over the active limiting device and the detection arc-shaped plate 9 is driven by the active limiting device to move towards the direction away from the bearing plate 2 (i.e. move towards the initial position and the detection spring 10 is in a stretched state again);

along with the rotation of the two arc-shaped frames 3 in the direction away from each other, the clamping plate 6 does not abut against the legs of the patient any more and the movable arc-shaped plate 4 moves along the arc-shaped frames 3 towards the initial position under the action of the extension spring 5, and at the moment, the detection device drives the bearing plate 2 to slowly rotate upwards close to one end of the backrest of the walking chair 1 through the bearing plate 2 driving device, so that the bearing plate 2 is in the horizontal state again (namely, returns to the initial position);

at the same time, in the process of rotating the two arc-shaped frames 3 in the direction away from each other, as shown in fig. 6, that is, at this time, the connecting frame 61 fixedly connected with the arc-shaped frames 3 rotates in the direction away from the lower end surface of the loading plate 2, at this time, under the action of the circular arc rack 62, the first driven gear 63 starts to rotate in the opposite direction, and further the driven connecting rack 66 is driven to rotate towards the initial position by the matched driven pulley set 64 and the second driven gear 65, and the arc rack 8 is synchronously driven to rotate towards the initial position along with the movement of the driven connecting rack 66, at this time, the arc rack 8 synchronously drives the indirect transmission device to rotate in the opposite direction to the initial time, so that the elastic potential energy of the driving spring 7 connected between the indirect transmission device and the clamping plate 6 is gradually reduced (when we set the initial time, the driving spring 7 connected between the indirect transmission device and the clamping plate 6 is in the natural state), when the two arc-shaped frames 3 move to the initial position (i.e., when the driving spring 7 is in the natural state, as shown in fig. 2), when the indirect transmission device moves to the initial position, the two arc-shaped frames 3 move in the direction, and when the clamping plate 2 moves to the initial position, and the loading plate 2 moves to move synchronously drives the loading plate 2, that the loading plate 2 moves to the initial position (i.e., when the loading plate 2) and the loading plate 2 moves to move again, that the loading plate is moved, that the loading plate 2 is moved to the loading plate is located at this time, and the loading plate is located at this time, that the loading plate is located at this time.

Embodiment 2, on the basis of embodiment 1, referring to fig. 8, we have a rectangular cylinder 11 installed on the movable arc plate 4 in a sliding fit with the clamping plate 6, referring to fig. 15, the indirect transmission device includes a first gear 12 installed in the rectangular cylinder 11 in a rotating manner, and the first gear 12 is engaged with a first rack 13 installed in the rectangular cylinder 11 in a vertical sliding manner, the driving spring 7 is connected between the first rack 13 and the clamping plate 6 (we set the first rack 13 to be rectangular and set the lower part thereof to be an opening when setting the first rack 13, we have two driving springs 7, as shown in fig. 15), when the arc rack 8 rotates under the driving of the driven device, the arc rack 8 drives a second gear 15 engaged therewith to rotate (the second gear 15 is installed on the arc frame 3 in a rotating manner), the second gear 15 rotates to drive the first gear 12 to rotate through the first pulley set 14 connected with the first gear, the first gear 12 rotates to drive the first rack 13 meshed with the first gear to move towards the direction close to the bearing plate 2, before the arc-shaped plate 9 is detected to be not abutted to the human body, the clamping plate 6 is always in a positioned state and cannot move freely (in the process, the first gear 12 rotates continuously and then the first rack 13 meshed with the first gear is continuously moved downwards, so that the driving spring 7 is continuously compressed and stored with energy), so that when the arc-shaped plate 9 is detected to be abutted to the surface of the leg of the human body, the unlocking device releases the positioning of the clamping plate 6 by the positioning device and enables the clamping plate 6 to move towards the direction close to the bearing plate 2 under the action of the driving spring 7, and further the effect of abutting the clamping plate 6 to the surface of the leg of the patient and clamping the leg of the patient are realized, positioning;

it is to be noted here that: when the clamping plate 6 and the detection arc-shaped plate 9 are arranged, the distances between the clamping plate 6 and the detection arc-shaped plate 9 and the circle center of the arc-shaped frame 3 are set to be the same in the initial state (as shown in figure 8), and the clamping plate 6 can tightly abut against the leg of the patient under the action of elastic potential energy stored by the driving spring 7 and clamp and position the leg of the patient after the unlocking device releases the positioning of the positioning device on the clamping plate 6;

the arrangement is such that the second gear 15 is mounted with an axial sliding fit between the first pulley set 14, as shown with reference to fig. 14, and is arranged so as to cooperate with the change in position of the mobile arc 4.

Embodiment 3, on the basis of embodiment 2, referring to fig. 15, the clamping plate 6 includes a connecting rod 16 vertically slidably mounted in the rectangular cylinder 11, a friction arc plate 17 coaxially disposed with the arc frame 3 is fixedly mounted at a lower end of the connecting rod 16, an upper end of the driving spring 7 is connected to the first rack 13, and a lower end of the driving spring 7 is fixedly connected to the connecting rod 16, and when the connecting rod 16 is disposed, a thickness of a portion where the connecting rod is vertically slidably engaged with the rectangular cylinder 11 is smaller than a thickness of a portion where the lower end of the connecting rod 16 is connected to the friction arc plate 17, so that the arrangement is to provide an accommodating space for the first pulley set 14, the first gear 12, and the first rack 13 (since a space in the rectangular cylinder 11 is fixed, only a portion where the upper end of the connecting rod 16 is slidably engaged with the rectangular cylinder 11 is thinned);

the friction arc 17 greatly increases the frictional resistance between the patient leg and the clamping plate 6, and avoids the relative movement between the clamping plate 6 and the patient leg caused by the small frictional resistance when the clamping plate 6 is abutted against the patient leg.

Embodiment 4, on the basis of embodiment 1, referring to fig. 9, we have a locking device for locking the movable arc-shaped plate 4 on the arc-shaped frame 3, and the locking device is provided to avoid the situation that the movable arc-shaped plate 4 moves in the arc-shaped frame 3 corresponding to the movable arc-shaped plate 4 due to shaking generated in the transfer process when the device is not used and needs to be transferred (because the bearing plate 2 does not need to rotate when the device is in idle transfer, we need to take certain locking measures for the movable arc-shaped plate 4, otherwise, when the movable arc-shaped plate 4 moves, the detection device immediately starts to drive the bearing plate 2 to rotate through the driving device of the bearing plate 2, thereby bringing unnecessary actions, and the driving device of the bearing plate 2 needs to consume electric energy for operation);

referring to fig. 9, the locking device includes a locking rack 18 slidably mounted at the mating end of the two arc frames 3, the locking rack 18 is engaged with a locking gear 19 rotatably mounted in the arc frame 3, the locking gear 19 is engaged with a locking plate 20 slidably mounted in the arc frame 3, when the end of the moving arc frame 4 close to the locking rack 18 is provided with a locking hole 22 for engagement with the locking plate 20, when the moving arc frame 4 is in a locked state, the locking plate 20 is inserted into the corresponding locking hole 22, and at this time, the moving arc frame 4 cannot move freely, referring to fig. 8, only when the mating ends of the two arc frames 3 do not abut against each other, the locking plate 20 is still inserted into the corresponding locking hole 22 and locking of the moving arc frame 4 is achieved (of course, when the two arc frames 3 are in the position as shown in fig. 2, the moving arc frame 4 is also in a locked state), we set that when the mating ends of the two arc frames 3 do not abut against each other, the locking rack 18 is under the action of the locking gear 21, and the distance is set up from the moving arc frame 4 to the locking hole 23 of the locking rack 4, and when the two arc frames 3 are moved to the locking rack 23, and the locking plate is pushed together, and the locking rack 23 is pushed together, and we set that when the two arc-shaped frames 3 are completely butted together, i.e. in the state as shown in fig. 4, the two locking plates 20 just completely withdraw from the locking holes 22 corresponding to the two locking plates, and the moving arc-shaped plates 4 are in the free state.

Example 5, on the basis of example 4, and referring to fig. 14, we have a U-shaped cavity 24 slidably engaged with the detecting arc 9 on the arc frame 3, the active limiting device includes a first electromagnet fixedly installed on the top of the U-shaped cavity 24, referring to fig. 20, we fixedly install an iron sheet easily attracted by the magnet on the upper end face of the detecting arc 9, we connect the first electromagnet in series in a first voltage stabilizing circuit and the first voltage stabilizing circuit is electrically connected with an external power source (when we set the initial active limiting device to limit the detecting arc 9, the first voltage stabilizing circuit is in an on state and the first electromagnet is energized to generate an electromagnetic force, the electromagnetic force achieves the limit to the detecting arc 9 by attracting the iron sheet fixedly installed on the upper end of the detecting arc 9), referring to fig. 9, we have a containing cavity 25 for containing the locking rack 18, the locking gear 19 and the locking plate 20 at the end where the two arc frames 3 are engaged, the sensing device includes a first trigger switch (not shown in the figure 9), when we are moved from the corresponding locking rack 20 to the locking gear 19 and the first spring 20 to the first voltage stabilizing switch 10, and when the first voltage stabilizing switch is moved to the first spring contact with the first detecting arc 10, the first trigger switch under the state, and the detecting arc 10, we are just moved to the first trigger spring contact to the first detecting arc 10, as shown in fig. 17);

when the active limiting device loses the limitation on the detection arc-shaped plate 9, the detection arc-shaped plate 9 can be abutted to the surface of the leg of a patient under the action of the detection spring 10 (note that the device can only limit and clamp the patient within a certain size range, and if the patient is too fat or too thin, the device cannot be used properly);

when the two arc-shaped frames 3 are separated from each other from the position shown in fig. 4, along with the separation of the two arc-shaped frames 3, the arc-shaped abutting plate 23 contracted into the accommodating cavity 25 in the arc-shaped frame 3 starts to slide outwards under the action of the locking spring 21, along with the outward movement of the arc-shaped abutting plate 23, the synchronous moving locking rack 18 moves towards the direction away from the corresponding moving arc-shaped plate 4, at this time, the first trigger switch is not triggered any more, and at this time, the first microcontroller controls the first voltage stabilizing circuit to be switched on again, at this time, the first electromagnet is powered on to generate electromagnetic force and through attracting the iron sheet fixedly installed at the upper end of the detecting arc-shaped plate 9, so that the detecting arc-shaped plate 9 moves upwards to the initial position and the limiting of the detecting arc-shaped plate 9 is realized again.

Embodiment 6, on embodiment 3 basis, better, we make when setting up to move curved plate 4 and be connected with the one-way transmission device and the one-way transmission device that set up on curved frame 3 and be connected with detection curved plate 9, one-way transmission device satisfies: when the moving arc-shaped plate 4 does not move, the one-way transmission device is not in contact with the detection arc-shaped plate 9 (that is, the one-way transmission device cannot drive the detection arc-shaped plate 9 to move), when the detection device detects that the moving arc-shaped plate 4 moves, the detection arc-shaped plate 9 is driven to move through the one-way transmission device (when the moving arc-shaped plate 4 and the arc-shaped frame 3 corresponding to the moving arc-shaped plate 4 move relatively, the detection arc-shaped plate 9 is driven to move towards the direction close to the bearing plate 2 through the one-way transmission device), as shown in fig. 19, a touch plate 26 is integrally arranged on the detection arc-shaped plate 9 (the touch plate 26 is also arranged in an arc shape and is coaxial with the arc-shaped frame 3), as shown in fig. 13, a touch rod 27 matched with the touch plate 26 is fixedly connected to the connecting rod 16, and when the detection arc-shaped plate 9 is at the initial position and the connecting rod 16 is also at the initial position, the lower end face of the connecting rod 16 is touched to the lower end face of the touch plate 26 (as shown in fig. 14);

referring to fig. 20, we rotatably install two abutting rods 28 in the detecting arc 9, and the two abutting rods 28 are coaxially arranged, we connect an abutting spring 29 between the two abutting rods 28, and referring to fig. 21, we slidably install a triangle 30 at one end of the two abutting rods 28 away from the rotation center position thereof, and the triangle 30 is connected with an electric push rod 31 installed in the abutting rods 28 (note here: initially, when the detecting arc 9 is still in a limited state under the action of the active limiting device, the triangular plate 30 slidably mounted in the abutting rod 28 does not contact with the abutting groove 32, that is, the two are spaced apart from each other), referring to fig. 19 and 20, the abutting groove 32 vertically extending and matching with the triangular plate 30 is provided on the inner side wall of the U-shaped cavity 24, and it is set that when the active limiting device loses the limitation on the detecting arc 9 and the detecting arc 9 abuts against the leg of the patient under the action of the detecting spring 10, the electric push rod 31 starts to extend and the triangular plate 30 is driven by the electric push rod 31 to move outward, so that the triangular plate 30 abuts against the abutting groove 32 matching therewith to limit the detecting arc 9, as shown in fig. 20, when the detecting arc 9 abuts against the leg of the patient and the triangular slope portion of the triangular plate 30 abuts against the abutting groove 32, at this time, the detecting arc 9 cannot move downward continuously (when the detecting arc 9 moves downward and does not contact with the leg of the patient, the clamping plate 6 is always positioned and the initial contact position of the connecting rod 16 is still connected with the detecting arc 9, but the detecting rod 27 moves with the detecting arc 9 at a certain distance from the detecting rod 27), when the detection arc 9 abuts against the surface of the leg of the patient, at this time, the detection arc 9 cannot move downwards continuously under the cooperation of the triangular plate 30 and the abutting groove 32, and at this time, along with the abutment of the detection arc 9 against the surface of the leg of the patient, the unlocking device releases the positioning of the clamping plate 6 by the positioning device and makes the clamping plate 6 move towards the direction close to the leg of the patient under the action of the driving spring 7, so that when the lower end face of the abutting rod 27 fixedly connected with the connecting rod 16 abuts against the upper end face of the abutting plate 26 integrally arranged with the detection arc 9, the clamping plate 6 (the clamping plate 6 comprises a connecting rod 16 vertically slidably mounted in the rectangular cylinder 11 and a friction arc plate 17 fixedly mounted at the lower end of the connecting rod 16) can not continuously move downwards due to the limit of the abutting plate 26 (the friction arc plate 17 fixedly connected to the lower end of the connecting rod 16 is already abutted against the surface of the leg of the patient at this time), and at this time, the friction arc plate 17 is abutted against the surface of the leg of the patient under the action of the elastic potential energy of the driving spring 7, and the clamping and the limit of the leg of the patient are realized;

if the moving arc 4 and the arc frame 3 corresponding thereto do not move relatively to each other, the unidirectional transmission device does not drive the detecting arc 9 to move further toward the direction approaching the bearing plate 2 (at this time, the connecting rod 16 cannot move downward continuously due to the limitation of the abutting plate 26, so that the elastic potential energy of the driving spring 7 cannot be further released, that is, the clamping force on the leg of the patient is small at this time), if the moving arc 4 and the arc frame 3 corresponding thereto move relatively to each other (then, it means that the clamping force of the frictional arc 17 acting on the leg of the patient makes the frictional resistance generated between the hip of the patient and the upper end surface of the bearing plate 2 insufficient to overcome the tendency of the hip of the patient moving along the upper end surface of the bearing plate 2), when the detection device detects that the moving arc 4 and the arc frame 3 corresponding thereto move relatively to each other, the unidirectional transmission device starts to drive the detecting arc 9 to move further toward the direction approaching the bearing plate 2 by driving the clamping force, that the detecting arc 9 further presses the surface of the leg of the patient, when the detecting arc 4 and the arc 3 corresponding to the arc 3 move relatively to move to the patient, then the detecting arc 9 and the elastic potential energy of the abutting plate 6 acts on the upper end surface of the bearing plate 2 further increases, and the elastic potential energy of the abutting plate 7 acts on the patient is further increased along the upper end surface of the pressing plate 2, and the pressing plate 6 of the elastic contact plate 6 of the patient, at this time, when the detecting arc 9 moves further increases, the effect of preventing the buttocks of the patient from continuously sliding along the upper end surface of the bearing plate 2 is realized (the patient can be effectively prevented from sliding off the bearing plate 2 which is rotatably arranged on the walking chair 1);

when a patient needs to leave the walking chair 1, firstly, the clamping motor 57 is controlled by the clamping motor controller to start reverse rotation and drive the two arc-shaped frames 3 to rotate towards the direction away from each other, and along with the separation of the two arc-shaped frames 3, the induction device is not triggered any more, at the moment, the active limiting device starts to operate again and attracts an iron sheet fixedly installed on the upper end surface of the detection arc-shaped plate 9 through electromagnetic force, so that the effect of driving the detection arc-shaped plate 9 to move upwards is realized, and in the process of moving the detection arc-shaped plate 9 upwards, the abutting rods 28 are synchronously moved upwards through continuous compression of the abutting springs 29 connected between the two abutting rods 28 due to the fact that the triangular plates 30 abut against the corresponding abutting grooves 32, and along with the upward movement of the detection arc-shaped plate 9, so that the two abutting rods 28 are synchronously driven to move upwards along with the detection arc-shaped plate 9, as shown in the attached drawing 21, until the detection arc-shaped plate moves to the initial position;

it should be noted here that: when the two arc-shaped frames 3 are just separated from contact, that is, when the first trigger switch is no longer triggered, the active limiting device has recovered operation and attracts an iron sheet fixedly mounted on the upper end surface of the detection arc-shaped plate 9 through electromagnetic force to further drive the detection arc-shaped plate 9 to move upwards (at this time, the upper end surface of the abutting plate 26 and the lower end surface of the abutting rod 27 are in a mutually abutting state), and along with the movement of the two arc-shaped frames 3 towards a direction away from each other, only the elastic potential energy stored in the driving spring 7 can be slowly reduced, but the generation of the electromagnetic force is instantaneous, so that when the magnitude of the electromagnetic force is set, the electromagnetic force can be set to be smaller, and when the two arc-shaped frames 3 are about to move to the initial position (that is, the vicinity of the position shown in fig. 2), the detection arc-shaped plate 9 can realize upwards movement under the action of the electromagnetic force (that the magnitude of the electromagnetic force is not larger than the magnitude of the elastic potential energy stored in the driving spring 7);

of course, it is also possible to set a larger electromagnetic force (by controlling the current flowing through the first voltage stabilizing circuit), so that when the two arc frames 3 are just separated, the detecting arc plate 9 can be driven by the electromagnetic force to move upward to the initial position, and it should be noted here that: at this time, since the two arc frames 3 have not moved to the initial position and the elastic potential energy stored in the driving spring 7 still exists, the electromagnetic force moves upward through driving the detection arc 9, and then drives the contact rod 27 to move upward through the contact plate 26, so that the detection arc 9 moves upward to the initial position under the action of the electromagnetic force (in the process of detecting the upward movement of the detection arc 9, since the generation of the electromagnetic force is instantaneous, the speed of the upward movement of the detection arc 9 under the action of the electromagnetic force is greater than the speed of the upward movement of the clamping plate 6).

Example 7, based on example 6, referring to fig. 14, we fix a longitudinally extending one-way rack 33 on the outer arc surface of the moving arc 4 and mesh the one-way rack 33 with a fourth gear 34 rotatably mounted on the arc frame 3, when the moving arc 4 moves in the corresponding arc frame 3 (at this time, the expansion spring 5 connected between the arc frame 3 and the moving arc 4 is compressed), and then synchronously drive the one-way rack 33 to move, the one-way rack 33 moves and then drives the fourth gear 34 rotatably mounted on the arc frame 3 to rotate, the fourth gear 34 drives a first worm 36 rotatably mounted on the arc frame 3 through a first worm 35 coaxially rotating therewith to rotate, the first worm 36 drives a second worm 38 rotatably mounted on the U-shaped cavity 24 to rotate through a second pulley set 37 connected therewith, as shown in fig. 18, the second worm 39 drives a second worm 39 rotatably mounted on the U-shaped cavity 24 to rotate through a third pulley set 40 connected therewith to rotate a disengaging device mounted on the U-shaped cavity 24, as shown in fig. 18, the third worm 39 is mounted on the U-shaped cavity 24 and also mounted on the third pulley set 42, and the third pulley set 42 is also mounted on the third rack 40 and the third rack 42, and the third rack 42 is mounted on the third rack 42, and the third rack 42 is also shown in fig. 17;

when the detection device detects that the moving arc 4 has not moved, the engagement and disengagement device is in an off state, that is, at this time, the detection arc 9 is positioned under the action of the matched triangular plate 30 and the abutting groove 32 (the detection arc 9 cannot move downwards towards the direction close to the bearing plate 2, that is, towards the leg of the patient), at this time, the detection arc 9 only abuts against the surface of the leg of the patient under the action of the elastic force of the detection spring 10 (at this time, the elastic potential energy of the driving spring 7 connected between the connecting rod 16 and the first rack 13 is only partially released, and thus the clamping force on the leg of the patient is small).

Embodiment 8, on the basis of embodiment 7, referring to fig. 19, the unlocking device comprises an unlocking arc plate 44 vertically slidably mounted on the lower end surface of the detection arc plate 9, and an unlocking spring 45 is connected between the unlocking arc plate 44 and the detection arc plate 9, initially, the position relationship between the detection arc plate 9 and the unlocking arc plate 44, as shown in fig. 8, when the detection arc plate 9 moves towards the direction close to the bearing plate 2, the unlocking arc plate 44 first butts against the leg of the patient and is accompanied by the continued movement of the detection arc plate 9, so that the unlocking arc plate 44 is retracted inwards into the detection arc plate 9 and the unlocking spring 45 is compressed, we have a second trigger switch in the detection arc plate 9, which is matched with the unlocking arc plate 44, and when the unlocking arc plate 44 is completely slid into the detection arc plate 9, the second trigger switch is triggered and controls the positioning device to lose the positioning of the clamping plate 6 through the second microcontroller electrically connected with the second trigger switch, so that the clamping plate 6 moves towards the direction close to the leg of the patient under the action of the elastic potential energy of the driving spring 7, and during the process that the clamping plate 6 moves towards the direction close to the leg of the patient, the part of the elastic potential energy stored in the driving spring 7 is released, so that when the lower end face of the abutting rod 27 fixedly connected with the connecting rod 16 abuts against the upper end face of the abutting plate 26, the connecting rod 16 does not move downwards at the moment (the clamping plate 6 can only move downwards to the position under the obstruction of the abutting plate 26), and the friction arc-shaped plate 17 fixedly mounted at the lower end of the connecting rod 16 abuts against the surface of the leg of the patient, thereby achieving the effect of clamping and positioning the leg of the patient on the upper end face of the bearing plate 2;

when the second trigger switch is triggered (that is, the unlocking arc 44 completely slides into the detection arc 9, indicating that the detection arc 9 is already abutted against the leg surface of the patient), the second microcontroller controls the electric push rod 31 to move and extend the telescopic rod thereof, so that the triangular plate 30 slidably mounted in the abutting rod 28 moves outwards and the inclined surface part of the triangular plate 30 abuts against the abutting groove 32 arranged on the U-shaped cavity 24, thereby realizing the positioning effect on the detection arc 9;

referring to fig. 10, the positioning device includes a positioning hole 68 disposed on the connecting rod 16, a positioning rod 67 engaged with the positioning hole 68 is slidably mounted in the moving arc 4, and a positioning spring 69 is connected between the positioning rod 67 and the moving arc 4, initially, when the clamping plate 6 is in a positioned state, the positioning rod 67 is inserted into the positioning hole 68 under the action of the positioning spring 69 to position the clamping plate 6 (we fix an iron sheet on one side of the positioning rod 67 connected with the positioning spring 69 and install a third electromagnet on a connecting portion of the moving arc 4 and the positioning spring 69, we connect the third electromagnet in series in a fourth voltage stabilizing circuit and control the fourth voltage stabilizing circuit to be turned on or off by a second microcontroller, when the positioning rod 67 is inserted into the positioning hole 68, the fourth voltage stabilizing circuit is in a turned off state), when the second trigger switch is triggered, the second microcontroller controls the fourth voltage stabilizing loop to be connected and enables the third electromagnet to be electrified to generate electromagnetic force, so that the positioning rod 67 is pulled out of the positioning hole 68 by attracting an iron sheet fixed on the positioning rod 67, at the moment, the positioning rod 67 is in a free state and moves in a direction close to the leg of the patient under the action of the driving spring 7, and the setting is that when the clamping plate 6 moves downwards, namely, the connecting rod 16 moves downwards along the rectangular cylinder 11, one end of the head part of the positioning rod 67 always abuts against the side wall of the connecting rod 16, when the second trigger switch is not triggered (which indicates that the detection arc-shaped plate 9 does not abut against the leg of the patient at the moment, namely, the patient leaves from the walking chair 1 at the moment), the second microcontroller controls the fourth voltage stabilizing loop to be deenergized, so that the third electromagnet loses the electromagnetic force, at the moment, one end of the head part of the positioning rod 67 always abuts against the side wall of the connecting rod 16, with the reverse rotation of the clamp motor 57, the clamp plate 6 is moved toward the initial position (upward), so that when the positioning hole 68 provided on the connecting rod 16 is moved to a position corresponding to the positioning rod 67, the positioning rod 67 is inserted into the positioning hole 68 again by the positioning spring 69, and the clamp plate 6 is positioned again.

Embodiment 9, on the basis of embodiment 8, referring to fig. 18, the engagement and disengagement device includes a first engagement plate 46 that is coaxially fixed and rotated with the third gear 41, and the first engagement plate 46 is engaged with a transmission shaft 48 that is driven by the third pulley set 40, a second engagement plate 47 that is engaged with the first engagement plate 46 is axially slidably mounted on the transmission shaft 48, and an engagement spring 49 is connected between the second engagement plate 47 and the transmission shaft 48, the first engagement plate 46 and the second engagement plate 47 have the same structure, when the engagement device is installed, a plurality of engagement teeth 77 that are uniformly distributed are fixedly mounted around a sidewall of the two engagement plates that face each other, a second electromagnet is fixed on the transmission shaft 48 and is connected in series in a second voltage stabilizing circuit, and an iron sheet is fixed on a side of the second engagement plate 47 that faces the second electromagnet;

the detection device comprises a resistor 50 fixedly installed in an arc-shaped frame 3, a conducting strip 51 which is connected with the resistor 50 in series is installed at the sliding fit contact part of a movable arc-shaped plate 4 and the arc-shaped frame 3, the arrangement of the resistor 50 and the conducting strip 51 does not hinder the normal movement of the movable arc-shaped plate 4 in the arc-shaped frame 3, the resistor 50 and the conducting strip 51 are connected in series in a third voltage stabilizing loop together, an ammeter is connected in series in the third voltage stabilizing loop, when the movable arc-shaped plate 4 moves relatively in the arc-shaped frame 3, the resistance value of the resistor 50 connected in series in the third voltage stabilizing loop changes correspondingly, and further the current in the third voltage stabilizing loop changes correspondingly, the ammeter is electrically connected with a third microcontroller, and when the ammeter detects the current change in the third voltage stabilizing loop (the ammeter detects the current fluctuation change in the third voltage stabilizing loop, and by setting corresponding numerical values, when the fluctuation range of the current in the third voltage stabilizing loop exceeds the set numerical values, the second voltage stabilizing loop is controlled to be disconnected by the third microcontroller, and when the current in the third voltage stabilizing loop is reduced (at this time, the trend that the legs of the patient move away from the backrest of the walking chair 1 along the upper end surface of the bearing plate 2 is shown, namely, the connecting rod 16 is driven by the friction arc-shaped plate 17 to drive the moving arc-shaped plate 4 to move in the corresponding arc-shaped frame 3), the second voltage stabilizing loop is controlled to be disconnected by the third microcontroller (when the moving arc-shaped plate 4 does not move, the second voltage stabilizing loop is in a connected state, the second electromagnet is electrified to generate electromagnetic force, and the second meshing plate 47 and the first meshing plate 46 are in a separated state by attracting the iron sheet fixedly arranged on the second meshing plate 47 through the electromagnetic force At this time, the plurality of meshing teeth 77 fixedly installed on the opposite sides of the two meshing plates are not in contact with each other and are disengaged from each other, and at this time, the meshing spring 49 is in a compressed state), the second voltage stabilizing circuit is disconnected, so that the second electromagnet is de-energized, and further the electromagnetic force disappears, so that the second meshing plate 47 is axially moved along the transmission shaft 48 toward the direction close to the first meshing plate 46 under the action of the meshing spring 49, so that the plurality of meshing teeth 77 on the two meshing plates are mutually staggered, and when the second meshing plate 47 is rotated under the drive of the third pulley group 40, the effect of transmitting the power to the first meshing plate 46 is further achieved (note here is: the electric push rod controller is electrically connected with the second microcontroller and the third microcontroller at the same time, but when the electric push rod controller is arranged, the priority of the second microcontroller for controlling the electric push rod 31 is higher than that of the third microcontroller for controlling the electric push rod 31, namely, when the arc-shaped plate 9 is detected to be abutted against the leg of a patient, the second microcontroller firstly controls the electric push rod 31 to extend and enables the inclined plane of the triangular plate 30 to be abutted against the abutting groove 32, when the arc-shaped plate 9 is detected to be separated from the leg of the patient, the second microcontroller controls the electric push rod 31 to shorten and enables the inclined plane part of the triangular plate 30 to be separated from the abutting groove 32, and the second microcontroller can realize the control no matter whether the arc-shaped plate 4 moves or not in the process);

when the movable arc-shaped plate 4 moves in the arc-shaped frame 3 corresponding to the movable arc-shaped plate, the third microcontroller firstly controls the electric push rod 31 to contract and enables the inclined surface part of the triangular plate 30 to be separated from the abutting groove 32, at the moment, the detection arc-shaped plate 9 is in a free state, and the effect of driving the detection arc-shaped plate 9 to move downwards is achieved through the third rack 43 meshed with the third gear 41 along with the rotation of the third gear;

the first meshing plate 46 rotates to drive the third gear 41 to rotate, the third gear 41 rotates to drive the detection arc plate 9 to further move downwards in the direction of extruding the legs of the patient through the third rack 43 which is meshed with the third gear and fixedly connected with the detection arc plate 9, and the detection arc plate 9 is driven to further move downwards along the direction of extruding the legs of the patient, and along with the continuous downward movement of the detection arc plate 9, the touch plate 26 fixedly connected with the detection arc plate is synchronously driven to move downwards, so that the clamping plate 6 also synchronously moves continuously in the direction of extruding the legs of the patient under the action of the driving spring 7, and the elastic potential energy stored by the driving spring 7 is further released, so that the larger clamping force on the legs of the patient is realized, the frictional resistance between the legs of the patient and the upper end face of the bearing plate 2 is further increased, and the situation that the legs of the patient continuously move along the bearing plate 2 to fall off can be effectively prevented;

referring to fig. 16 and 17, it should be noted that: when the detection arc-shaped plate 9 is driven to move downwards by the one-way rack 33, the fourth gear 34, the first worm 35, the first worm wheel 36 and the second belt pulley group 37 when the moving arc-shaped plate 4 moves, the power transmission direction can only move from the moving arc-shaped plate 4 and then drive the one-way rack 33 to move, and finally the power is transmitted to the detection arc-shaped plate 9 and drive the detection arc-shaped plate 9 to move downwards, due to the one-way transmission principle of the worm and gear, even when the detection arc-shaped plate 9 starts to move downwards, the elastic potential energy stored in the driving spring 7 is larger, and the detection arc-shaped plate 9 cannot be driven to move downwards by the abutting rod 27 pressing on the abutting plate 26, namely, the distance for the downward movement of the detection arc-shaped plate 9 can only be determined by the movement distance between the moving arc-shaped plates 4 and the corresponding arc-shaped frames 3;

when the ammeter detects that the current in the third voltage stabilizing circuit is not changed or fluctuates only within a set range (which indicates that the relative movement between the movable arc-shaped plate 4 and the arc-shaped frame 3 corresponding to the movable arc-shaped plate is not generated or the movement amplitude is very small), the third microcontroller controls the second voltage stabilizing circuit to be switched on and enables the second electromagnet to be electrified to generate electromagnetic force, the first meshing plate 46 and the second meshing plate 47 which are meshed together are separated again by attracting the second meshing plate 47, and meanwhile, the third microcontroller controls the electric push rod 31 to extend again and drives the inclined surface part of the triangular plate 30 to be collided with the abutting groove 32 again, so that the positioning effect on the detection arc-shaped plate 9 is realized again.

Embodiment 10, on the basis of embodiment 9, referring to fig. 7, the driving device for the carrying plate 2 comprises a driving rack 52 fixedly installed at both sides of one longitudinal end of the carrying plate 2 in the transverse direction, and the driving rack 52 is engaged with a driving gear 53 (as shown in fig. 7) rotatably installed on the walking chair 1, referring to fig. 1, we rotate one of the driving gears 53 coaxially with a driving worm wheel 54 and the driving worm wheel 54 is matched with a driving worm 55 rotatably installed on the walking chair 1, the driving worm 55 is driven by a rotating motor 56 and the rotating motor controller is electrically connected with the third microcontroller, when the ammeter detects that the current fluctuation in the third voltage stabilizing loop exceeds the set range, the third microcontroller controls the rotating motor 56 to start and drives the driving worm gear 54 through the rotating motor 56, the driving worm gear 54 rotates to drive the driving rack 52 fixedly connected with the bearing plate 2 to move through the two driving gears 53, when the driving rack 52 is set, the rotating center of the driving rack 52 (the driving rack 52 is set to be arc) is coincided with the center of the driving gear 53, when the ammeter is set, when the third microcontroller controls the rotating motor 56 to start (the motor controller is an integrated circuit which controls the motor to work according to the set direction, speed, angle and response time through active work), the rotating motor 56 stops working after rotating a certain angle, that is, the effect of driving one end of the bearing plate 2 close to the backrest of the walking chair 1 to rotate downwards by a certain angle is realized by the matched driving worm gear 54, the driving gear 53 and the driving rack 52, so that the problem that the legs of the patient continuously slide outwards along the upper end surface of the bearing plate 2 is overcome;

referring to fig. 1, we have a semicircular track 76 on the backrest of the walking chair 1 and arc-shaped limiting plates 70 respectively slidably mounted in the semicircular track 76, we have a limiting gear system 71 on the inner circular surface of the arc-shaped limiting plates 70 and have limiting gears 72 engaged with the limiting gear system 71 rotatably mounted on the walking chair 1, we have one of the limiting gears 72 engaged with a second reversing gear 75 rotatably mounted on the walking chair 1, we have a limiting motor 73 fixedly mounted on the walking chair 1 and the limiting motor 73 drives the second reversing gear 75 and the other limiting gear 72 respectively through a limiting pulley set 74, initially, the two arc-shaped limiting plates 70 are in the position shown in fig. 1 (behind the backrest of the walking chair 1), when a patient sits on the bearing plate 2, we control the limiting motor 73 to start through the limiting motor controller and drive the two arc-shaped limiting plates 70 to synchronously move towards the other side of the backrest of the walking chair 1 through the second reversing gear 75, that is finally, when the two arc-shaped limiting plates 70 are in the position shown in fig. 4, the rotation motor 56 stops working (we stop the rotation motor 56 after the rotation motor controller controls the rotation angle and the corresponding rotation angle of the patient is just as shown in the drawing, and the corresponding angle can be controlled by the corresponding motor 56 when the patient needs to walk.

The device can realize spacing to patient's waist through setting up two arc limiting plates 70 that mutually support, the emergence of the condition of having avoided turning over forward when the downhill path highway section, another, when patient's buttock slides forward along the wheelchair cushion, can realize pressing from both sides tight and the size along with gliding distance and corresponding change the tight dynamics of clamp to patient's shank through a plurality of friction arcs 17, when following that friction arcs 17 presss from both sides tight to patient's shank, the angle of adjustable loading board 2 and make loading board 2 be close to walking chair 1 back tip and rotate downwards, with the realization prevent that patient's buttock from continuing to follow the gliding effect of loading board 2 forward.

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The clinical care anti-falling device comprises a walking chair (1) and is characterized in that a bearing plate (2) is rotatably arranged on the walking chair (1), two arc-shaped frames (3) are transversely arranged on the bearing plate (2) at intervals, the two arc-shaped frames (3) are transversely rotatably arranged on the bearing plate (2) along one end of the arc-shaped extending direction and are connected with an active driving device arranged on the lower end face of the bearing plate (2), a movable arc-shaped plate (4) coaxially arranged with the arc-shaped frames (3) is longitudinally and slidably arranged in the arc-shaped frames (3), a telescopic spring (5) is connected between the movable arc-shaped plate (4) and the arc-shaped frames (3), a clamping plate (6) is longitudinally and slidably arranged in the movable arc-shaped plate (4), an indirect transmission device matched with the clamping plate (6) is arranged on the movable arc-shaped plate (4), a driving spring (7) is connected between the indirect transmission device and the clamping plate (6), and a positioning device for positioning the clamping plate (6) is arranged on the movable arc-shaped plate (4),

the indirect transmission device is connected with an arc rack (8) which is rotatably arranged on one longitudinal side wall of the arc frame (3) and coaxially arranged with the arc frame (3), the arc rack (8) is driven by a driven driving device fixed on the bearing plate (2), the movable arc plate (4) is provided with a detection arc plate (9) along the radial direction in a sliding manner, a detection spring (10) is connected between the detection arc plate (9) and the arc frame (3), the arc frame (3) is provided with an active limiting device used for limiting the detection arc plate (9), the other ends of the two arc frames (3) along the arc extending direction are provided with induction devices, and when the two arc frames (3) move to corresponding positions, the active limiting devices can be controlled to relieve the limitation of the detection arc plate (9);

the arc-shaped frame (3) is provided with a detection device, the detection device is electrically connected with a bearing plate (2) driving device, when the detection device detects that the movable arc-shaped plate (4) moves, the bearing plate (2) driving device is controlled to drive the bearing plate (2) to rotate for a certain angle, one end, close to the bearing plate (2), of the detection arc-shaped plate (9) is provided with an unlocking device used for releasing the positioning of the clamping plate (6) by the positioning device, and when the detection arc-shaped plate (9) is abutted against a human body, the positioning of the clamping plate (6) is released;

remove be provided with on arc (4) with a rectangular cylinder (11) of clamping plate (6) sliding fit installation, clamping plate (6) are fixed with friction arc (17) that set up with the axle center with arc frame (3) including vertical slidable mounting on connecting rod (16) and connecting rod (16) in a rectangular cylinder (11), it has double-phase complex arc limiting plate (70) to be equipped with on semicircular track (76) and semicircular track (76) slidable mounting on walking chair (1) the back.

2. The clinical care fall prevention device according to claim 1, wherein the indirect transmission device comprises a first gear (12) rotatably mounted in the rectangular cylinder (11), the first gear (12) is engaged with a first rack (13) vertically slidably mounted in the rectangular cylinder (11), the driving spring (7) is connected between the clamping plate (6) and the first rack (13), the first gear (12) is connected with a first pulley set (14) arranged in the rectangular cylinder (11), the first pulley set (14) is connected with a second gear (15) rotatably mounted on the arc-shaped frame (3) and engaged with the arc-shaped rack (8), and the second gear (15) is connected with the first pulley set (14) in an axial sliding fit manner.

3. The clinical care dropproof device of claim 1, characterized in that, be provided with the locking device to moving arc (4) locking on arc (3), locking device includes that slidable mounting has locking gear (19) of rotation installation in arc (3) in locking rack (18) and locking rack (18) meshing of two arc (3) one end that cooperatees, locking gear (19) meshing has lockplate (20) and locking rack (18) and the arc (3) of slidable mounting in arc (3) to be connected with locking spring (21), it is provided with arc butt plate (23) to establish about on the removal arc (4) with lockplate (20) matched with locking hole (22) and locking rack (18) outside stretch out arc (3) one end an organic whole.

4. The clinical care falling-prevention device according to claim 3, wherein a U-shaped cavity (24) which is in sliding fit with the detection arc-shaped plate (9) is arranged on the arc-shaped frame (3), the active limiting device comprises a first electromagnet which is fixed on the top wall of the U-shaped cavity (24) and is connected in series in a first voltage stabilizing loop, an iron sheet is fixed on the upper end face of the detection arc-shaped plate (9), one end, which is matched with the two arc-shaped frames (3), of the active limiting device is provided with a containing cavity (25) which is used for containing the locking rack (18), the locking plate (20) and the locking gear (19), the sensing device comprises a first trigger switch which is installed in the containing cavity (25) and is matched with the locking rack (18), the first trigger switch is electrically connected with a first microcontroller which controls the on-off of the first voltage stabilizing loop, and when the locking device just loses the locking of the movable arc-shaped plate (4), the first trigger switch is triggered.

5. The clinical care fall prevention device according to claim 4, wherein the moving arc (4) is connected with a one-way transmission device arranged on the arc frame (3) and the one-way transmission device is connected with the detection arc (9), and the one-way transmission device satisfies the following conditions: when the movable arc plate (4) is not moved, the one-way transmission device is not contacted with the detection arc plate (9), when the detection device detects that the movable arc plate (4) is moved, the detection arc plate (9) is driven to move through the one-way transmission device, the detection arc plate (9) is integrally connected with a touch plate (26), a touch rod (27) matched with the touch plate (26) is fixed on the connecting rod (16),

detect in arc (9) with the axle center rotate install two to connect pole (28) and two to connect and be connected with butt spring (29) between pole (28), it has electric putter (31) of fixed mounting in pole (28) to connect pole (28) interior slidable mounting of set-square (30) and set-square (30) to be connected with, U-shaped chamber (24) lateral wall is provided with butt groove (32) with set-square (30) matched with, electric putter (31) extension when detecting arc (9) and contradict in the human body just makes set-square (30) butt and butt groove (32) in.

6. A clinical care fall protection device according to claim 5, wherein a longitudinally extending unidirectional rack (33) is fixed on the outer arc surface of the movable arc plate (4) and the unidirectional rack (33) is engaged with a fourth gear (34), the unidirectional transmission device comprises a first worm (35) coaxially rotating with the fourth gear (34) and the first worm (35) is engaged with a first worm wheel (36) rotatably mounted on the arc frame (3), the first worm wheel (36) is driven by a second pulley set (37) to have a second worm (38) rotatably mounted on the U-shaped cavity (24) and the second worm (38) is driven by a second worm wheel (39) rotatably mounted on the U-shaped cavity (24), the second worm wheel (39) is connected with a third pulley set (40) and the third pulley set (40) is driven by an engagement and disengagement device arranged on the U-shaped cavity (24), the engagement and disengagement device is driven by a third gear (41) rotatably mounted on the U-shaped cavity (24) and the third gear (41) is driven by a detection device (43) which detects that the movable arc plate (4) is not in the disengaged state.

7. The clinical care dropproof device of claim 6, characterized in that, the unlocking device includes that vertical slidable mounting is in the unblock arc (44) of detection arc (9) lower terminal surface and unblock arc (44) and be connected with unblock spring (45) between detection arc (9), be provided with in the detection arc (9) with unblock arc (44) matched with second trigger switch and when unblock arc (44) slide in to detection arc (9) completely in the second trigger switch triggered, second trigger switch electric connection has second microcontroller and second microcontroller control positioner and loses the location to clamp plate (6), second microcontroller control electric putter (31) extension.

8. The clinical care fall protection device according to claim 7, wherein the engagement and disengagement device comprises a first engagement plate (46) which is coaxially fixed and rotates with the third gear (41), the first engagement plate (46) is matched with a transmission shaft (48) driven by the third pulley set (40), a second engagement plate (47) which is matched with the first engagement plate (46) is axially and slidably mounted on the transmission shaft (48), an engagement spring (49) is connected between the second engagement plate (47) and the transmission shaft (48), a second electromagnet is fixed on the transmission shaft (48) and is connected in series with a second voltage stabilizing loop, and an iron sheet is fixed on one side, facing the second electromagnet, of the second engagement plate (47);

the detection device includes: a resistor disc (50) is fixed in the arc frame (3), a conducting strip (51) which is connected with the resistor disc (50) in series is fixed on the movable arc plate (4), the resistor disc (50) and the conducting strip (51) are connected in series in a third voltage stabilizing loop, the third voltage stabilizing loop is electrically connected with a third microcontroller, the third microcontroller is electrically connected with the second voltage stabilizing loop, the electric push rod (31) is electrically connected with the third microcontroller, when the movable arc plate (4) moves, the third microcontroller controls the electric push rod (31) to contract, when the movable arc plate (4) stops moving, the third microcontroller controls the electric push rod (31) to extend, and the priority of the second microcontroller for controlling the electric push rod (31) is greater than that of the third microcontroller.

9. The clinical care fall arrest device according to claim 8, characterized in that the carrier plate (2) drive means comprises a drive rack (52) fixedly mounted on one longitudinal end of the carrier plate (2) on both lateral sides and the drive rack (52) is engaged with a drive gear (53) rotatably mounted on the walking chair (1), wherein one drive gear (53) is coaxially rotated with a drive worm gear (54) and the drive worm gear (54) is engaged with a drive worm (55) rotatably mounted on the walking chair (1), the drive worm (55) is driven by a rotation motor (56) and the rotation motor (56) controller is electrically connected with a third microcontroller.