CN215652101U

CN215652101U - Multifunctional ambulance stretcher bed going downstairs

Info

Publication number: CN215652101U
Application number: CN202121731429.XU
Authority: CN
Inventors: 谈志文; 刘金涛
Original assignee: Nanjing Emergency Center
Current assignee: Nanjing Emergency Center
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-01-28
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a multifunctional stretcher bed of a downstairs ambulance, which belongs to the field of medical rescue equipment and comprises a backrest part, a hip part and a shank part which are sequentially connected in a folding manner; an I-shaped angle adjusting device is arranged between the backrest part and the hip part; a II-type angle adjusting device is arranged between the lower leg part and the hip part; the bottom side of the hip part is provided with a left foot rod and a right foot rod; the stretcher bed is supported on the ground through the left truckle at the lower end of the left foot rod and the right truckle at the lower end of the right foot rod; an integrated rod is fixedly arranged at the bottom side of the backrest part, and one end of the integrated rod is provided with a wheelchair rear wheel; when the backrest part is folded and rotated upwards relative to the hip part, the integrated rod can rotate along with the backrest part; until the backrest part is locked and fixed at a certain angle, the integrated rod can be vertically supported on the ground through the rear wheel of the wheelchair. The utility model can realize the advantage of polymorphic use of the wheelchair and the stretcher.

Description

Multifunctional ambulance stretcher bed going downstairs

Technical Field

The utility model relates to the technical field of medical rescue equipment, in particular to a multifunctional stretcher bed of an ambulance going downstairs.

Background

120 ambulance gradually become citizen's rigid demand for health guarantee, and the car is taken out for emergency rescue by 500 times every day, and this first aid of car accident class only accounts for a minority, and more is that the ambulance goes to the home address of patient, and emergency doctor drives to patient's home to rescue and handle and transport to the hospital.

According to the old and new district that the patient is located, divide into to have elevator room and no elevator room, have or not the elevator to the first aid staff move the mode of lifting and will be different, which kind of more efficient just needs first aid doctor to consider according to the experience. In each household emergency treatment process, the emergency doctor needs to know the state of an illness by calling back the telephone and needs to know what posture the patient needs to take down the stairs. If no elevator is provided, the patient can not sit down, so that a plurality of persons are required to participate, and the patient can be lifted and transported down by the flexible stretcher, which is the most labor-consuming situation, but the emergency handling of all families is relatively rare. When there is not the elevator, if the patient can lean on the seat, then can use the wheelchair that downstairs that many ambulances all have, utilize the belt to slide down the transport slowly from stair, this kind of transport mode is laborsaving the most, and the participation number is minimum, only needs 2 people, even 1 people just can carry smoothly. When an elevator exists, no matter the elevator in a new community or an old community, the elevator has small space capacity, a stretcher cannot be placed for entering, when a patient needs to lie down, the patient goes downstairs, the patient is troublesome to carry by emergency personnel, the patient still can only use a soft stretcher, and the elevator with any size can be entered randomly due to the fact that the horizontal length of a downstair wheelchair is short. There is also a troublesome situation that many patients and their family members cannot exactly tell whether the patient needs to lie down or sit down when the emergency doctor dials back, which brings difficulty to the emergency doctor. For example, the family members can definitely say that the patient can sit and lean on the chair, emergency personnel take the wheelchair going downstairs to climb upstairs painfully, the patient goes unconsciously and goes upstairs, and the like, and can not sit and lie flat, so that the wrong selection of the carrying mode is caused, and the whole emergency efficiency is influenced. When the wheelchair is used for going downstairs to bring a patient to an ambulance, the stretcher bed is pushed out from the inside of the wheelchair and then the patient is lifted from the wheelchair to the stretcher bed, so that the hospital delivery time is delayed in the step of passing the bed, and meanwhile, the risks of falling the bed and the like are increased when the patient passes the bed.

Various wheelchair for going downstairs exist in the market, but the wheelchair only has the function of going downstairs and does not have the function of lying. All the stretcher beds on ambulances have the functions of horizontal pushing and vehicle carrying, but cannot be moved upstairs or enter an elevator, and have no function of downstairs. Some flat-bed carts can be folded into a wheelchair form, and can be carried on a vehicle, but have no function of going downstairs, so that the market utilization rate is low. Almost all vehicle-mounted folding downstairs wheelchairs take up significant space in the ambulance medical compartment.

From the above, it is found that the wheelchair is preferably the most efficient transportation system even when the patient can stand the sitting posture. But the occupied space of some novel downstairs wheelchairs is too large after being folded, which brings troubles to some small-sized ambulances, and the occupied space influences the number of people carrying the ambulance and the medical operation space of emergency personnel.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the problems occurring in the prior art, and an object of the present invention is to provide a multifunctional ambulance cot which is convertible into a wheelchair form without passing through a patient bed and which can go downstairs by means of a crawler.

In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows:

a multifunctional stretcher bed of an ambulance going downstairs comprises a backrest part, a hip part and a shank part which are sequentially connected in a folding way from left to right; an I-shaped angle adjusting device is arranged between the backrest part and the hip part; the backrest part can be controlled to be folded upwards relative to the hip part and rotated and locked and fixed at a certain angle through the I-shaped angle adjusting device; a II-type angle adjusting device is arranged between the lower leg part and the hip part; the II-type angle adjusting device can control the shank part to fold downwards relative to the hip part and lock and fix the shank part at a certain angle;

the bottom side of the hip part is provided with a left foot rod and a right foot rod in a foldable manner; the stretcher bed is supported on the ground through the left caster at the lower end of the left foot rod and the right caster at the lower end of the right foot rod; an integrated rod is fixedly arranged at the bottom side of the backrest part, and one end of the integrated rod is provided with a wheelchair rear wheel; when the backrest part is folded and rotated upwards relative to the hip part, the integrated rod can rotate along with the backrest part; the integrated rod can be vertically supported on the ground through the rear wheel of the wheelchair until the backrest part is locked and fixed at a certain angle.

Further, left foot pole, right foot pole and integrative pole all set up two sets ofly relatively along the width direction of the stretcher bed body, and are two sets of connect fixedly through left dead lever between the left foot pole.

Furthermore, the integral rods are integrally in an S shape with two bending sections, and one bending section of each integral rod is attached to the bottom surface of the backrest part; the length of each group of the integrated rods is set to be a length which can enable the position of the rear wheel of the wheelchair to be slightly higher than the left caster at the lower end of the left foot rod when the integrated rods are perpendicular to the ground, so that the rear wheel of the wheelchair is in a suspended state.

Furthermore, two sides of the backrest part along the width direction of the bed body are respectively provided with a fixing sheet, and the two groups of integrated rods are respectively fixed on the corresponding fixing sheets; and one end of each group of the integrated rods, which is far away from the rear wheels of the wheelchair, is provided with a riding boosting wheel.

Further, it is two sets of the one end that integrative pole is close to the wheelchair rear wheel all articulates there is the belt of going downstairs, every one side of belt of going downstairs all is equipped with belt cavity groove, two be equipped with belt fixed part between the belt cavity groove, belt fixed part includes that two one end articulate respectively in the revolving rack on the integrative pole that corresponds, two be connected with the belt dead lever between one side of revolving rack, the belt dead lever runs through two belt cavity grooves and can slide from top to bottom in the inslot, the one end of belt dead lever is equipped with the locking and detains, and is rotatory the locking is detained and is made the position locking of belt dead lever in belt cavity groove to the position of the belt of making downstairs keeps fixed.

Furthermore, the I-shaped angle adjusting device comprises an air pressure ejector rod, the left end of the bottom of the hip part is provided with a fixed support, and two ends of the air pressure ejector rod are correspondingly hinged to the backrest part and the fixed support respectively; when the pneumatic ejector rod reaches the maximum extension state, the backrest part is folded to the maximum angle relative to the hip part, and the relative position between the backrest part and the hip part is kept locked and fixed; when the air pressure ejector rod is in a natural state, the backrest part is supported on the fixed support and is in a horizontal position relative to the hip part, and the relative position between the backrest part and the hip part is kept locked and fixed.

Furthermore, the shank part and the hip part are connected in a folding mode through a connecting rotating shaft, the II-type angle adjusting device comprises a connecting disc arranged at one end of the connecting rotating shaft, a torsion spring wound on the outer side of the connecting rotating shaft is arranged between the connecting disc and the hip part, and when the torsion spring is in a natural state, the shank part is in a horizontal position relative to the hip part; along the dish edge equidistance of connection pad just is equallyd divide and is equipped with a plurality of buckle groove, one side of shank is equipped with the buckle, through with the buckle is connected in the buckle inslot that corresponds to make the relative angle between shank and the buttockss position can keep the locking fixed.

Furthermore, the outer side of the right foot rod and the bottom of the hip part are both hinged with a connecting rod, and one ends of the two connecting rods, which are opposite, are locked and fixed by bolts; through adjusting two the angle of bending between the connecting rod to can adjust the right leg pole and fix for the folding angle between the buttockss position portion and in certain angle department locking.

Furthermore, the top one side of back portion, buttockss position portion, shank is equipped with folding soft mattress jointly, the left end of back portion is equipped with the head guardrail, buttockss position portion all is equipped with the lateral part guardrail along bed body width direction's both sides, the right-hand member of shank is equipped with the foot guardrail.

The utility model has the following beneficial effects:

1. the stretcher bed and the wheelchair can be mutually converted through the arrangement and the matching of the integrated rod, the wheelchair rear wheel, the left foot rod, the right foot rod, the left foot wheel and the right foot wheel, and the stretcher bed has three modes of horizontal pushing of the stretcher, downstairs of the wheelchair and vehicle-mounted, and can be switched freely according to the requirements of emergency personnel and the illness state of patients.

2. The utility model ensures that the patient can stably lie or sit on the soft mattress in the whole process during the transfer process of the first aid without intermediate bed-passing risk and extra carrying; alleviate the patient and carry the armful of crossing the bed because of many times and lead to unnecessary ailment in the transportation.

3. The wheelchair is transformed, the operation is simple, the use is convenient, and the wheelchair can easily go downstairs on the stairs of the building by the aid of the belt for going downstairs; meanwhile, the boarding boosting wheel can reduce the resistance when the ambulance is pushed to the ascending slope so as to reduce the burden of the ambulance personnel.

Drawings

Fig. 1 is a schematic top view of a stretcher according to the present invention;

fig. 2 is a schematic side view of the stretcher of the present invention;

fig. 3 is a schematic bottom view of the stretcher of the present invention;

FIG. 4 is a front elevational view of the wheelchair configuration of the present invention;

FIG. 5 is a rear elevational view in schematic form of the wheelchair of the present invention;

fig. 6 is a schematic view of the bottom structure of the stretcher of the present invention in the form of a bed.

The label names in the figure: the multifunctional wheelchair comprises a soft mattress 1, a backrest 101, a hip part 102, a shank part 103, a head guardrail 2, a side guardrail 3, a foot guardrail 4, an upper vehicle boosting wheel 5, a fixing sheet 6, an integrated rod 7, a wheelchair rear wheel 8, a left caster 9, a left foot rod 10, a right foot rod 11, a right foot wheel 12, a left fixing rod 13, a lower floor belt 14, an air pressure ejector rod 15, a belt fixing part 17, a belt hollow groove 18 and a belt fixing rod 21.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely a few, but not all, embodiments of the utility model.

The first embodiment:

the multifunctional stretcher bed for the ambulance going downstairs comprises a backrest part 101, a hip part 102 and a shank part 103 which are sequentially connected in a folding manner from left to right; an I-shaped angle adjusting device is arranged between the backrest part 101 and the hip part 102; the backrest part 101 can be controlled to be folded upwards relative to the hip part 102 through the I-shaped angle adjusting device and locked and fixed at a certain angle; a II-type angle adjusting device is arranged between the lower leg part 103 and the hip part 102; the type ii angle adjusting device can control the lower leg part 103 to fold and rotate downwards relative to the hip part 102 and lock and fix at a certain angle.

Wherein, the bottom side of the hip part 102 is provided with a left foot rod 10 and a right foot rod 11 in a foldable way; the bottom end of the left foot rod 10 is provided with a left caster wheel 9, the bottom end of the right foot rod 11 is provided with a right caster wheel 12, and the stretcher is supported on the ground through the left caster wheel 9 at the lower end of the left foot rod 10 and the right caster wheel 12 at the lower end of the right foot rod 11; preferably, the right caster 12 adopts a universal epicyclic wheel capable of movably turning; an integrated rod 7 is fixedly arranged at the bottom side of the backrest part 101, and one end of the integrated rod 7 is provided with a wheelchair rear wheel 8; when the backrest part 101 is folded and rotated upward with respect to the hip part 102, the integrated lever 7 can rotate following the backrest part 101; until the backrest part 101 is locked and fixed at an angle, the integrated rod 7 can be vertically supported on the ground by the wheelchair rear wheel 8.

It should be noted that, the specific folding connection structures between the left foot bar 10, the right foot bar 11 and the hip portion 102 all belong to the prior art, for example, the connection structure between the bed leg and the bed frame described in the patent with the publication number CN2546007, and the description of the present invention is omitted here.

Referring to fig. 3 and 6, the i-shaped angle adjusting device includes an air push rod 15, a fixed bracket is disposed at the left end of the bottom of the hip portion 102, and two ends of the air push rod 15 are respectively hinged to the backrest portion 101 and the fixed bracket; when the pneumatic ram 15 reaches the maximum extension state, the backrest part 101 is folded to the maximum angle relative to the hip part 102 and the relative position between the two parts is kept locked and fixed; when the pneumatic ram 15 is in the natural state, the backrest portion 101 is supported on the fixed bracket and is in the horizontal position relative to the hip portion 102, and the relative position between the backrest portion 101 and the hip portion 102 is kept locked and fixed.

Referring to fig. 1 and 4, the lower leg part 103 is connected to the hip part 102 in a folding manner by a connecting shaft, the ii-shaped angle adjusting device includes a connecting disc disposed at one end of the connecting shaft, a torsion spring wound around the outer side of the connecting shaft is disposed between the connecting disc and the hip part 102, and when the torsion spring is in a natural state, the lower leg part 103 is in a horizontal position with respect to the hip part 102; a plurality of clamping grooves are arranged at equal angles along the disc edge of the connecting disc in an evenly-distributed mode, a clamp is arranged on one side of the small leg portion 103, and the clamp is connected into the corresponding clamping groove, so that the relative angle between the small leg portion 103 and the hip portion 102 can be kept locked and fixed; in addition, the type II angle adjusting device can also adopt the related structure of the type I angle adjusting device or other angle adjusting structures in the prior stretcher bed.

In this embodiment, the outer side of the right foot bar 11 and the bottom of the hip part 102 are both hinged with a connecting bar, and the opposite ends of the two connecting bars are locked and fixed by bolts; by adjusting the folding angle between the two connecting rods, the folding angle between the right foot rod 11 and the hip seat portion 102 can be adjusted and locked and fixed at a certain angle.

Referring to fig. 1 to 6, a foldable soft mattress 1 is provided on the top side of the backrest 101, the hip 102 and the lower leg 103, a head guardrail 2 is provided on the left end of the backrest 101, side guardrails 3 are provided on both sides of the hip 102 along the width direction of the bed, and a foot guardrail 4 is provided on the right end of the lower leg 103.

Wherein, left foot pole 10, right foot pole 11 and integrative pole 7 all set up two sets ofly relatively along the width direction of the stretcher bed body, connect fixedly through left dead lever 13 between two sets of left foot poles 10.

Referring to fig. 4 to 5, one end of each of the two integrated rods 7 close to the wheelchair rear wheel 8 is hinged with a belt 14 for going downstairs, one side of each belt 14 for going downstairs is provided with a belt hollow groove 18, a belt fixing part 17 is arranged between the two belt hollow grooves 18, each belt fixing part 17 comprises two rotating frames, one ends of the two rotating frames are respectively hinged to the corresponding integrated rods 7, a belt fixing rod 21 is connected between one sides of the two rotating frames, the belt fixing rod 21 penetrates through the two belt hollow grooves 18 and can slide up and down in the grooves, one end of the belt fixing rod 21 is provided with a locking buckle, and the belt fixing rod 21 can be locked at the position in the belt hollow groove 18 by rotating the locking buckle, so that the position of the belt 14 for going downstairs is kept fixed; the locking buckle can be a locking nut or a locking part commonly used in the prior art, such as a buckle.

Referring to fig. 1, two fixing pieces 6 are respectively arranged on two sides of the backrest 101 along the width direction of the bed body, and two groups of integrated rods 7 are respectively fixed on the corresponding fixing pieces 6; the end of each group of integrated rods 7, which is far away from the rear wheel 8 of the wheelchair, is also provided with a boarding assistant wheel 5, and the boarding assistant wheels 5 are used for being attached to a boarding inclined plane when the stretcher is pushed into the ambulance, so that the resistance for pushing the stretcher is reduced.

In this embodiment, the integral rods 7 are integrally in an "S" shape having two curved sections, and one of the curved sections of each integral rod 7 is attached to the bottom surface of the backrest portion 101; each of the integrated rods 7 has a length such that the rear wheel 8 of the wheelchair is positioned slightly higher than the left caster 9 at the lower end of the left foot rod 10 when being perpendicular to the ground, so that the rear wheel 8 of the wheelchair is in a suspended state.

In order to make the reader more fully and clearly understand the technical solution, the embodiment further provides the following operation processes and working principles of the present invention:

firstly, the process of changing a stretcher bed into a wheelchair: firstly, the air pressure ejector rod 15 is opened, and the folding and rotating backrest part 101 is jacked upwards; when the backrest part 101 of the bed body is lifted to the highest position, the air pressure ejector rod 15 is in the maximum extension state, the air pressure ejector rod 15 behind the backrest part 101 is clamped and fixed, the integrated rod 7 is vertical to the ground, and the wheelchair rear wheel 8 at the bottom of the integrated rod 7 is in a suspended state; furthermore, the left foot rod 10 is controlled to be folded and contracted below the hip part 102 and is parallel to the two sides of the bed body; by loosening the buckle on the lower leg part 103, the lower leg part 103 overcomes the elasticity of the torsion spring and naturally falls under the action of gravity, and when the lower leg part 103 is folded downwards and rotates to a certain angle suitable for the bending angle between the lower leg and the thigh when a patient sits up, the position of the lower leg part 103 is locked through the buckle; furthermore, the bolts are screwed to control the two connecting rods to bend for a certain angle, so as to control the right foot rod 11 to fold rightwards and rotate for a certain angle, and the whole height of the hip positioning part 102 is reduced to a proper position; at this time, the entire stretcher is supported on the ground by the wheelchair rear wheel 8 and the right caster 12 at the lower end of the right foot bar 11, that is, it is converted into a wheelchair state.

It should be noted that, when the belt fixing rod 21 in the belt hollow groove 18 slides to the top of the groove by pulling the belt 14 hinged to the integrated rod 7 open, the position of the belt fixing rod 21 is fixed by the locking buckle, so that the position of the belt 14 can be locked and fixed, and the wheelchair can be converted into a wheelchair with a function of going downstairs.

Secondly, the process of changing the wheelchair into a stretcher: firstly, opening a locking buckle at the joint of the belt 14 for going downstairs and the integrated rod 7, retracting the belt 14 for going downstairs and the integrated rod 7 to be parallel, sliding a belt fixing rod 21 in a belt hollow groove 18 to the bottom of the groove, and rotating the locking buckle to lock and fix the position of the belt; then, the naturally laid-down shank 103 is lifted up to be flush with the bed body of the hip part 102, the shank 103 is in a horizontal position relative to the hip part 102, and the position of the shank 103 is locked by a buckle; then, two left foot rods 10 below the hip part 102 of the bed body are put down towards the head side; because the original position of the wheelchair rear wheel 8 on the integrated rod 7 is higher than the left caster wheel 9 at the lower end of the left foot rod 10, two persons are needed to simultaneously lift the bed body one by one and then adjust the inclination angle of the original right foot rod 11 of the bed body until the left caster wheel 9 at the bottom end of the left foot rod 10 of the bed body can be vertically supported on the ground; at this time, the wheelchair rear wheel 8 at the bottom of the integrated rod 7 is suspended, the air pressure push rod 15 at the rear side of the backrest part 101 is closed, the air pressure push rod 15 is contracted to a natural state, and the backrest part 101 is placed to be flush with the bed body of the hip part 102, so that the stretcher is formed.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may be made by those skilled in the art without departing from the principle of the utility model.

Claims

1. A multifunctional stretcher bed of an ambulance going downstairs comprises a backrest part (101), a hip part (102) and a small leg part (103) which are sequentially connected in a folding way from left to right; characterized in that an I-shaped angle adjusting device is arranged between the backrest part (101) and the hip part (102); the I-shaped angle adjusting device can control the backrest part (101) to fold upwards and rotate relative to the hip part (102) and lock and fix the backrest part at a certain angle; a II-type angle adjusting device is arranged between the small leg part (103) and the hip part (102); the II-type angle adjusting device can control the lower leg part (103) to fold and rotate downwards relative to the hip part (102) and lock and fix the lower leg part at a certain angle;

the bottom side of the hip part (102) is provided with a left foot rod (10) and a right foot rod (11) in a foldable manner; the stretcher is characterized in that a left caster (9) is arranged at the bottom end of the left foot rod (10), a right caster (12) is arranged at the bottom end of the right foot rod (11), and the stretcher is supported on the ground through the left caster (9) at the lower end of the left foot rod (10) and the right caster (12) at the lower end of the right foot rod (11); an integrated rod (7) is fixedly arranged at the bottom side of the backrest part (101), and one end of the integrated rod (7) is provided with a wheelchair rear wheel (8); when the backrest part (101) is folded and rotated upwards relative to the hip part (102), the integrated rod (7) can rotate along with the backrest part (101); the integrated rod (7) can be vertically supported on the ground through the rear wheel (8) of the wheelchair until the backrest part (101) is locked and fixed at a certain angle.

2. The multifunctional ambulance cot according to claim 1, wherein: left side foot pole (10), right foot pole (11) and integrative pole (7) all set up two sets ofly relatively along the width direction of the stretcher bed body, and are two sets of connect fixedly through left dead lever (13) between left side foot pole (10).

3. The multifunctional ambulance cot according to claim 2, wherein: the integral rods (7) are integrally in an S shape with two bending sections, and one bending section of each group of integral rods (7) is attached to the bottom surface of the backrest part (101); the length of each group of the integrated rods (7) is set to enable the position of the rear wheel (8) of the wheelchair to be slightly higher than the left caster (9) at the lower end of the left foot rod (10) when the integrated rods are vertical to the ground, so that the rear wheel (8) of the wheelchair is in a suspended state.

4. The multifunctional ambulance cot according to claim 3, wherein: two sides of the backrest part (101) along the width direction of the bed body are respectively provided with a fixing sheet (6), and the two groups of integrated rods (7) are respectively fixed on the corresponding fixing sheets (6); and one end of each group of the integrated rod (7) far away from the rear wheel (8) of the wheelchair is provided with a riding boosting wheel (5).

5. The multifunctional ambulance cot according to claim 4, wherein: two sets of the one end that integrative pole (7) are close to wheelchair rear wheel (8) all articulates there is belt (14) downstairs, every one side of belt (14) downstairs all is equipped with belt cavity groove (18), two be equipped with belt fixed part (17) between belt cavity groove (18), belt fixed part (17) include that two one end articulates respectively in the revolving rack on the integrative pole (7) that corresponds, two be connected with belt dead lever (21) between one side of revolving rack, belt dead lever (21) run through two belt cavity grooves (18) and can slide from top to bottom at the inslot, the one end of belt dead lever (21) is equipped with the locking and detains, and is rotatory locking is detained and is enabled the position locking of belt dead lever (21) in belt cavity groove (18) to make the position of belt (14) downstairs keep fixed.

6. The multifunctional ambulance cot according to any one of claims 1 to 5, wherein: the I-shaped angle adjusting device comprises an air pressure ejector rod (15), a fixed support is arranged at the left end of the bottom of the hip part (102), and two ends of the air pressure ejector rod (15) are correspondingly hinged to the backrest part (101) and the fixed support respectively; when the pneumatic ejector rod (15) reaches the maximum extension state, the backrest part (101) is folded to the maximum angle relative to the hip part (102) and the relative position between the backrest part and the hip part is kept locked and fixed; when the air pressure push rod (15) is in a natural state, the backrest part (101) is supported on the fixed support and is in a horizontal position relative to the hip part (102), and the relative position between the backrest part (101) and the hip part (102) is kept locked and fixed.

7. The multifunctional ambulance cot according to claim 6, wherein: the small leg part (103) and the hip part (102) are connected in a folding mode through a connecting rotating shaft, the II-type angle adjusting device comprises a connecting disc arranged at one end of the connecting rotating shaft, a torsion spring wound on the outer side of the connecting rotating shaft is arranged between the connecting disc and the hip part (102), and when the torsion spring is in a natural state, the small leg part (103) is in a horizontal position relative to the hip part (102); the angle such as along the dish edge of connection pad just equallyd divide and be equipped with a plurality of buckle groove, one side of shank (103) is equipped with the buckle, through will the buckle is connected in the buckle groove that corresponds to make the relative angle between shank (103) and buttockss position portion (102) can keep the locking fixed.

8. The multifunctional ambulance cot according to claim 7, wherein: the outer side of the right foot rod (11) and the bottom of the hip part (102) are hinged with connecting rods, and one ends of the two connecting rods, which are opposite, are locked and fixed by bolts; by adjusting the folding angle between the two connecting rods, the folding angle between the right foot rod (11) relative to the hip part (102) can be adjusted, and the right foot rod is locked and fixed at a certain angle.

9. The multifunctional ambulance cot according to claim 1, wherein: the mattress is characterized in that a foldable soft mattress (1) is arranged on one side of the top of the backrest part (101), the hip part (102) and the lower leg part (103), a head guardrail (2) is arranged at the left end of the backrest part (101), side guardrails (3) are arranged on the hip part (102) along the two sides of the width direction of the bed body, and foot guardrails (4) are arranged at the right end of the lower leg part (103).