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CN220766207U - Elevator safety anti-falling device - Google Patents

Elevator safety anti-falling device Download PDF

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Publication number
CN220766207U
CN220766207U CN202322153248.9U CN202322153248U CN220766207U CN 220766207 U CN220766207 U CN 220766207U CN 202322153248 U CN202322153248 U CN 202322153248U CN 220766207 U CN220766207 U CN 220766207U
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China
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plate
optical axis
elevator
shaped plate
semicircular steel
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CN202322153248.9U
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Chinese (zh)
Inventor
李沛
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Shenyang Zhentai Machinery Manufacturing Co ltd
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Shenyang Zhentai Machinery Manufacturing Co ltd
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  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

The utility model relates to the technical field of elevator safety, and discloses an elevator safety anti-falling device, which comprises a lift car, a bottom plate and an optical axis, wherein a buffer mechanism is arranged between the lift car and the bottom plate, the upper end of the bottom plate is symmetrically and fixedly provided with an L-shaped plate, the optical axis penetrates through the L-shaped plate, a linear bearing is arranged between the optical axis and the L-shaped plate, braking mechanisms are arranged on the side walls, far away from the L-shaped plate, of the elevator, the braking mechanisms are connected with the optical axis, and a speed sensor is fixed on the side wall of the L-shaped plate. According to the elevator car, the second springs, the semicircular steel plates, the guide rods, the side plates and the linkage assembly are matched, so that the two semicircular steel plates approach the optical axis along the guide rods under the action of elastic force of the second springs, the friction plates are driven by the two semicircular steel plates to simultaneously squeeze the optical axis, the elevator car is fixed, and safety of passengers is guaranteed.

Description

Elevator safety anti-falling device
Technical Field
The utility model relates to the technical field of elevator safety, in particular to an elevator safety anti-falling device.
Background
The elevator has a car and a counterweight, which are connected by a wire rope, which is driven by the traction of a drive (hoisting machine) to move the car and counterweight up and down on the guide rails in the elevator.
The speed limiter and the safety tongs are important safety protection devices of the elevator, which are also called rope breakage protection and overspeed protection, when the elevator is overspeed, running out of control or a suspension device is broken, the speed limiter safety tongs device rapidly stops the elevator car on a guide rail and keeps a static state, monitors and controls the speed of the car at any time, and can timely send out a signal when an overspeed condition occurs, namely 115% of the rated speed of the elevator, so that the traction machine is braked.
However, after the steel wire rope breaks, the speed limiter and the safety tongs cannot provide safety protection for the elevator when emergency treatment is not performed and power failure occurs, and only the mechanical braking system of the elevator can be used for braking. However, the mechanical braking system of the elevator needs the elevator to descend to reach a certain speed to start, if the elevator descends to fall to the ground at a low floor at a certain speed, the device is damaged to a certain extent, and passengers are injured to a certain extent.
Disclosure of Invention
The utility model aims to provide a safe anti-falling device for an elevator, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an elevator safety anti-falling device, includes car, bottom plate and optical axis, be equipped with buffer gear between car and the bottom plate, the upper end symmetry and the fixed mounting of bottom plate have the L shaped plate, the optical axis runs through the L shaped plate, the optical axis with be equipped with linear bearing between the L shaped plate, the lateral wall that the L shaped plate kept away from mutually all is equipped with brake mechanism, brake mechanism with the optical axis is connected, the lateral wall of L shaped plate is fixed with speed sensor.
According to the technical scheme, the buffer mechanism comprises a blocking shell, the blocking shell is fixedly assembled at the lower end of the car, a blocking plate is slidably assembled in the blocking shell, a first spring is fixedly assembled between the upper end of the blocking plate and the blocking shell, a sliding column is fixedly assembled at the lower end of the blocking plate, and the lower end of the sliding column is fixedly connected with the bottom plate.
According to the technical scheme, the braking mechanism comprises a fixed block, the fixed block is fixedly assembled on the side wall of the L-shaped plate vertical plate, a braking groove is formed in the end portion of the fixed block in a penetrating mode, a locking assembly is arranged in the braking groove, the fixed block is far away from the side wall of the L-shaped plate vertical plate, an installation groove is formed in the side wall of the L-shaped plate vertical plate, the installation groove is communicated with the braking groove, a push-pull electromagnet is fixedly assembled in the installation groove, and the output end of the push-pull electromagnet is connected with the locking assembly.
According to the technical scheme, locking assembly includes semicircle steel sheet and guide bar, semicircle steel sheet symmetry is located the both sides of optical axis, one of them semicircle steel sheet the outer wall with the output of push-pull electromagnet is fixed, two semicircle steel sheet's inner wall all is fixed with the friction disc, two semicircle steel sheet's opening part is equal symmetry and is fixed with the sideboard, the guide bar symmetry is fixed in the brake tank, homonymy the sideboard all with the guide bar sliding connection who corresponds, the outer wall of guide bar all symmetry cover is equipped with the second spring, the one end of second spring all with the sideboard offsets, the one end of second spring all with the inner wall of brake tank offsets, all be equipped with the link assembly jointly on the sideboard of homonymy, the link assembly all is connected with the inner wall of brake tank.
According to the technical scheme, the linkage assembly comprises a rotating shaft, gears and racks, the rotating shaft is fixedly assembled on the inner wall of the braking groove, the gears are rotationally connected with the rotating shaft, the racks are fixedly assembled on the side walls of the side plates, the two racks are respectively arranged on the upper side and the lower side of the gears, and the racks are meshed with the gears.
According to the technical scheme, the bottom surface of the fixed block is higher than the bottom surface of the bottom plate.
According to the technical scheme, the guide rod is axially parallel to the output end of the push-pull electromagnet.
Compared with the prior art, the utility model has the beneficial effects that: according to the elevator car, the second springs, the semicircular steel plates, the guide rods, the side plates and the linkage assembly are matched, so that the two semicircular steel plates approach the optical axis along the guide rods under the action of elastic force of the second springs, the two semicircular steel plates drive the friction plates to simultaneously squeeze the optical axis, the elevator car is fixed, and the situation that when a low layer is broken, the elevator does not reach the starting speed of a mechanical braking system, falls down to the ground, and damage to the device and injury to passengers are caused is prevented.
According to the utility model, through the cooperation of the blocking shell, the blocking plate, the first spring and the sliding column, when the car continues to exert downward force due to inertia, the car can push the blocking shell to move downward, the blocking shell moves in the opposite direction to the blocking plate, the blocking shell can squeeze the first spring, and the first spring upwards provides upward thrust for the blocking shell under the action of elastic force so as to slow down downward impact of the car and prevent personnel from being injured.
Drawings
FIG. 1 is a schematic cross-sectional view of a cushioning mechanism of the present utility model;
FIG. 2 is a schematic cross-sectional view of the locking assembly of the present utility model;
FIG. 3 is a schematic cross-sectional view of the linkage assembly of the present utility model;
in the figure: 1. a car; 2. a bottom plate; 3. a speed sensor; 4. a buffer mechanism; 41. a blocking housing; 42. a blocking plate; 43. a first spring; 44. a sliding column; 5. an L-shaped plate; 6. an optical axis; 7. a linear bearing; 81. a fixed block; 82. a brake groove; 83. push-pull electromagnet; 84. a mounting groove; 85. a locking assembly; 851. a semicircular steel plate; 852. a guide rod; 853. a friction plate; 854. a side plate; 855. a second spring; 856. a linkage assembly; 860. a rotating shaft; 870. a gear; 880. a rack.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a technical solution: the elevator safety anti-falling device comprises a car 1, a bottom plate 2 and an optical axis 6, wherein a buffer mechanism 4 is arranged between the car 1 and the bottom plate 2, the upper end of the bottom plate 2 is symmetrically and fixedly provided with an L-shaped plate 5, the optical axis 6 penetrates through the L-shaped plate 5, a linear bearing 7 is arranged between the optical axis 6 and the L-shaped plate 5, the side walls, far away from the L-shaped plate 5, are respectively provided with a braking mechanism, the braking mechanisms are connected with the optical axis 6, and the side walls of the L-shaped plate 5 are fixedly provided with a speed sensor 3;
the adopted linear bearing 7 slides on the outer wall of the optical axis 6, the running stability of the device is ensured, the transverse plate of the L-shaped plate 5 is arranged between the transverse plate and the vertical plate of the L-shaped plate 5, the braking mechanism can play a role in protecting the braking mechanism, when the elevator is not powered off and the overspeed condition occurs, namely 115% of the rated speed of the elevator, the speed sensor 3 can timely send out a signal, then the power supply circuit of the braking mechanism is cut off, the braking mechanism is matched with the optical axis 6 to fix the elevator car 1, when the steel wire rope of the elevator breaks and the power failure occurs simultaneously, the braking mechanism can be started immediately to be matched with the optical axis 6 to fix the elevator car 1, the safety of elevator passengers is ensured, the elevator is prevented from falling down at the starting speed of a mechanical braking system when the elevator breaks at a low layer, the damage of the device and the injury of the elevator passengers are caused, and when the steel wire rope breaks, the falling speed is too fast downwards, and a certain downward force can be reduced when the braking mechanism fixes the elevator car 1 through the set buffer mechanism 4, and the passengers are prevented from being injured.
Specifically, the buffer mechanism 4 includes a blocking housing 41, the blocking housing 41 is fixedly assembled at the lower end of the car 1, a blocking plate 42 is slidably assembled in the blocking housing 41, a first spring 43 is fixedly assembled between the upper end of the blocking plate 42 and the blocking housing 41, a sliding column 44 is fixedly assembled at the lower end of the blocking plate 42, and the lower end of the sliding column 44 penetrates through the blocking housing 41 and is fixedly connected with the bottom plate 2;
the adopted blocking plate 42 is matched with the blocking shell 41, the sliding column 44 is used for supporting the blocking plate 42, when the car 1 is fixed by the braking mechanism, the car 1 continues to exert downward force due to inertia, the blocking shell 41 is pushed to move downwards by the car 1, the blocking shell 41 moves in the opposite direction to the blocking plate 42, the blocking shell 41 can squeeze the first spring 43, upward thrust is provided for the blocking shell 41 through the arranged first spring 43, and downward impulsive force of the car 1 is relieved to prevent personnel injury.
Specifically, the braking mechanism comprises a fixed block 81, the fixed block 81 is fixedly assembled on the side wall of the vertical plate of the L-shaped plate 5, a braking groove 82 is formed in the end portion of the fixed block 81 in a penetrating mode, a locking assembly 85 is arranged in the braking groove 82, an installation groove 84 is formed in the side wall, far away from the vertical plate of the L-shaped plate 5, of the fixed block 81, the installation groove 84 is communicated with the braking groove 82, a push-pull electromagnet 83 is fixedly assembled in the installation groove 84, and the output end of the push-pull electromagnet 83 is connected with the locking assembly 85;
the mounting groove 84 that adopts is convenient to install and dismantle push-pull electromagnet 83, and optical axis 6 passes brake groove 82 and locking subassembly 85 to be connected, and push-pull electromagnet 83 provides traction force for locking subassembly 85, guarantees the normal operating of elevator, and when brake mechanism's power supply circuit outage, push-pull electromagnet 83's output releases the traction to locking subassembly 85, and locking subassembly 85 can carry out mechanical locking to optical axis 6, and then the security to the fixed assurance device of car 1.
Specifically, the locking assembly 85 includes a semicircular steel plate 851 and a guide rod 852, the semicircular steel plates 851 are symmetrically arranged at two sides of the optical axis 6, the outer wall of one semicircular steel plate 851 is fixed with the output end of the push-pull electromagnet 83, the inner walls of the two semicircular steel plates 851 are both fixed with friction plates 853, the openings of the two semicircular steel plates 851 are both symmetrically fixed with side plates 854, the guide rod 852 is symmetrically fixed in the brake slot 82, the side plates 854 at the same side are both in sliding connection with the corresponding guide rods 852, the outer walls of the guide rods 852 are both symmetrically sleeved with second springs 855, one ends of the second springs 855 are all propped against the side plates 854, one ends of the second springs 855 are all propped against the inner wall of the brake slot 82, the side plates 854 at the same side are both provided with linkage assemblies 856, and the linkage assemblies 856 are all connected with the inner wall of the brake slot 82;
the friction plate 853 friction material adopted is a high polymer ternary composite material, the friction plate has good friction coefficient and wear resistance, certain heat resistance and mechanical strength are achieved, the optical axis 6 is wrapped by the two friction plates 853, the semicircular steel plates 851 close to the push-pull electromagnet 83 are fixed with the output end of the push-pull electromagnet 83, the output end of the push-pull electromagnet 83 pulls the semicircular steel plates 851 on the same side, the friction plates 853 on the same side are separated from the optical axis 6, the friction plates 853 are driven to be separated from the optical axis 6 by the aid of the linkage assembly 856, normal operation of the device is guaranteed, the side plates 854 can squeeze the second springs 855 on the outer walls of the guide rods 852, compression elasticity is achieved by the second springs 855, when a power supply circuit of the brake mechanism is powered off, the output end of the push-pull electromagnet 83 is released from pulling the semicircular steel plates 851, the semicircular steel plates 851 are close to the optical axis 6 along the guide rods 852 under the action of elasticity of the second springs 855, the two semicircular steel plates 851 drive the friction plates 853 to be simultaneously extruded from the optical axis 6 by the linkage assembly 856, and the safety of the car cage 85 is guaranteed to be locked to the mechanical cage 856.
Specifically, the linkage assembly 856 includes a rotating shaft 860, a gear 870 and a rack 880, the rotating shaft 860 is fixedly assembled on the inner wall of the brake slot 82, the gear 870 is rotationally connected with the rotating shaft 860, the side walls of the side plates 854 are fixedly assembled with the racks 880, the two adopted racks 880 are respectively arranged on the upper side and the lower side of the gear 870, the upper end tooth surfaces of the two racks 880 are opposite, the racks 880 are meshed with the gears 870, when one side of the semicircular steel plate 851 approaches to the optical axis 6, the side plates 854 on the semicircular steel plate 851 drive the racks 880 on the same side to move to the optical axis 6, the gear 870 is driven to rotate, and the other rack 880 is driven to do opposite movement while the gear 870 rotates, so that the semicircular steel plates 851 on the two sides synchronously and oppositely move (approach or are far away from the optical axis 6 at the same time), and the two semicircular steel plates 851 drive friction plates 853 to simultaneously squeeze the optical axis 6, so as to fix the car 1.
Specifically, the bottom surface of the fixing block 81 is higher than the bottom surface of the bottom plate 2; the braking mechanism is protected.
Specifically, the guide rod 852 is axially parallel to the output end of the push-pull electromagnet 83. The guiding function is performed to smoothly move the semicircular steel plates 851.
Working principle: when the steel wire rope of the elevator breaks and the power failure occurs simultaneously, the output end of the push-pull electromagnet 83 releases the traction on the semicircular steel plate 851, the semicircular steel plate 851 approaches to the optical axis 6 along the guide rod 852 under the action of the elastic force of the second spring 855, the side plate 854 on the semicircular steel plate 851 can drive the rack 880 on the same side to move to the optical axis 6, the gear 870 is driven to rotate, the gear 870 can simultaneously drive the other rack 880 to move reversely, the semicircular steel plates 851 on two sides simultaneously approach to the optical axis 6, further the two semicircular steel plates 851 drive the friction plates 853 to simultaneously squeeze the optical axis 6, the car 1 is fixed, the damage of the device and the injury of passengers due to the mechanical braking system are prevented when the elevator breaks is prevented, the downward speed is too high, the car 1 can continuously downwards force due to inertia, the blocking shell 41 can be pushed to downwards move, the blocking shell 41 and the blocking plate 42 move in the opposite direction, the blocking shell 41 can squeeze the first spring 43, the upward thrust force is provided for the blocking shell 43 to the upward to prevent the passengers from being injured.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The utility model provides an elevator safety anti-falling device, includes car (1), bottom plate (2) and optical axis (6), its characterized in that: the elevator car is characterized in that a buffer mechanism (4) is arranged between the elevator car (1) and the bottom plate (2), the upper end of the bottom plate (2) is symmetrical and fixedly provided with an L-shaped plate (5), the optical axis (6) penetrates through the L-shaped plate (5), a linear bearing (7) is arranged between the optical axis (6) and the L-shaped plate (5), braking mechanisms are arranged on the side walls, far away from each other, of the L-shaped plate (5), the braking mechanisms are connected with the optical axis (6), and speed sensors (3) are fixed on the side walls of the L-shaped plate (5).
2. The elevator safety fall protection device of claim 1, wherein: the buffer mechanism (4) comprises a blocking shell (41), the blocking shell (41) is fixedly assembled at the lower end of the car (1), a blocking plate (42) is slidably assembled in the blocking shell (41), a first spring (43) is fixedly assembled between the upper end of the blocking plate (42) and the blocking shell (41), a sliding column (44) is fixedly assembled at the lower end of the blocking plate (42), and the lower end of the sliding column (44) penetrates through the blocking shell (41) and is fixedly connected with the bottom plate (2).
3. The elevator safety fall protection device of claim 1, wherein: the braking mechanism comprises a fixed block (81), the fixed block (81) is fixedly assembled on the side wall of the vertical plate of the L-shaped plate (5), a braking groove (82) is formed in the end portion of the fixed block (81) in a penetrating mode, a locking assembly (85) is arranged in the braking groove (82), the fixed block (81) is far away from the side wall of the vertical plate of the L-shaped plate (5) and provided with a mounting groove (84), the mounting groove (84) is communicated with the braking groove (82), a push-pull electromagnet (83) is fixedly assembled in the mounting groove (84), and the output end of the push-pull electromagnet (83) is connected with the locking assembly (85).
4. A safety fall arrest device for an elevator as defined in claim 3, wherein: the locking assembly (85) comprises semicircular steel plates (851) and guide rods (852), wherein the semicircular steel plates (851) are symmetrically arranged on two sides of the optical axis (6), one of the semicircular steel plates (851) is fixedly arranged at the output end of the push-pull electromagnet (83), the two semicircular steel plates (851) are fixedly arranged on the inner wall of each semicircular steel plate, side plates (854) are symmetrically fixed at the opening of each semicircular steel plate (851), the guide rods (852) are symmetrically fixed in the brake grooves (82), the side plates (854) on the same side are in sliding connection with the corresponding guide rods (852), second springs (855) are symmetrically sleeved on the outer wall of each guide rod (852), one ends of the second springs (855) are respectively abutted against the inner wall of each brake groove (82), side plates (854) are respectively symmetrically provided with side plates (854), and linkage assemblies (856) are respectively connected with the inner walls of the brake grooves (856).
5. The elevator safety fall protection device of claim 4, wherein: the linkage assembly (856) comprises a rotating shaft (860), gears (870) and racks (880), the rotating shaft (860) is fixedly assembled on the inner wall of the brake groove (82), the gears (870) are rotationally connected with the rotating shaft (860), the racks (880) are fixedly assembled on the side walls of the side plates (854), the two racks (880) are respectively arranged on the upper side and the lower side of the gears (870), and the racks (880) are meshed with the gears (870).
6. A safety fall arrest device for an elevator as defined in claim 3, wherein: the bottom surface of the fixed block (81) is higher than the bottom surface of the bottom plate (2).
7. The elevator safety fall protection device of claim 5, wherein: the guide rod (852) is axially parallel to the output end of the push-pull electromagnet (83).
CN202322153248.9U 2023-08-11 2023-08-11 Elevator safety anti-falling device Active CN220766207U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322153248.9U CN220766207U (en) 2023-08-11 2023-08-11 Elevator safety anti-falling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322153248.9U CN220766207U (en) 2023-08-11 2023-08-11 Elevator safety anti-falling device

Publications (1)

Publication Number Publication Date
CN220766207U true CN220766207U (en) 2024-04-12

Family

ID=90602825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202322153248.9U Active CN220766207U (en) 2023-08-11 2023-08-11 Elevator safety anti-falling device

Country Status (1)

Country Link
CN (1) CN220766207U (en)

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