CN219362904U

CN219362904U - Elevator anti-falling mechanism

Info

Publication number: CN219362904U
Application number: CN202223268322.3U
Authority: CN
Inventors: 张宏
Original assignee: Changchun Hongming Elevator Co ltd
Current assignee: Changchun Hongming Elevator Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-07-18
Anticipated expiration: 2032-12-07

Abstract

The utility model discloses an elevator anti-falling mechanism which comprises a lift car and a mounting plate arranged at the top of the lift shaft, wherein a guide sliding rail is fixedly arranged on the inner wall of the lift shaft, a guide wheel is arranged on the side wall of the lift car, the guide wheel is matched with the guide sliding rail, a traction assembly is arranged between the top end of the mounting plate and the lift car, an anti-falling assembly is arranged between the lift car and the guide sliding rail, the anti-falling assembly comprises a mounting sleeve fixedly connected to the top end of the lift car, and a brake rod is slidably connected inside the mounting sleeve. Compared with the prior art, this elevator anti-falling mechanism, when the elevator appears breaking off and falls or because of other reasons take place to drop, the electro-magnet is passive to be cut off or initiatively cuts off the electro-magnet power through control button, and the electro-magnet loses magnetism, and electro-magnet and iron plate separation, under supporting spring's elasticity effect, the brake lever inserts fast and prevents falling inside the brake groove, reaches the purpose of preventing falling the braking to the car, and whole process reaction is quick, and can passively realize preventing weighing down, and the practicality is strong.

Description

Elevator anti-falling mechanism

Technical Field

The utility model relates to the technical field of elevator safety, in particular to an elevator anti-falling mechanism.

Background

The elevator is a vertical elevator powered by an electric motor, is provided with a box-shaped nacelle and is used for taking passengers or carrying goods in a multi-storey building, and also has steps, wherein a tread plate is arranged on a track to continuously run, commonly called an escalator or a moving walk, and is used for serving fixed lifting equipment of a specified floor.

According to the prior art (publication No. CN 212374648U), the anti-falling mechanism for the elevator is disclosed, a rotating shaft in a lifting mechanism rotates to drive a steel rope to move, then the elevator is driven to ascend or descend, a roller is clamped on a sliding groove, and meanwhile, the anti-falling mechanism has a limiting effect, when the elevator falls due to power failure, a handle is held from the inside of the elevator, a rod handle is rotated, a connecting rod is driven to rotate through the rotation of the handle, and meanwhile, a push rod is driven to move, a push block is pushed into a clamping groove in a frame body mechanism, so that the elevator descends to scram, the roller is limited to move, and the falling is prevented. However, the inventors have found that the prior art has the following problems in the implementation of the present utility model: when the elevator is braked, the anti-falling mechanism is not passively triggered, but the elevator is required to be started by manually rotating the handle by an inner person, but in a real situation, when the elevator is fallen, people are difficult to actively rotate the handle due to the influence of the panic emotion, so that the design of the anti-falling mechanism is difficult to meet the actual use requirement.

The applicant therefore proposes, in view of the above problems, a fall protection mechanism for an elevator that is passively triggered by a power failure.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides an elevator anti-falling mechanism to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the elevator anti-falling mechanism comprises a lift car and a mounting plate arranged at the top of the lift shaft, wherein a guide sliding rail is fixedly arranged on the inner wall of the lift shaft, guide wheels are arranged on the side wall of the lift car and are matched with the guide sliding rail, a traction assembly is arranged between the top end of the mounting plate and the lift car, and an anti-falling assembly is arranged between the lift car and the guide sliding rail;

the anti-falling assembly comprises an installation sleeve fixedly connected to the top end of the car, a brake rod is connected to the inside of the installation sleeve in a sliding manner, a positioning assembly is arranged between the installation sleeve and the brake rod, an anti-falling brake groove matched with the brake rod is formed in the inner wall of the guide sliding rail, a supporting plate is fixedly connected to the surface of the brake rod, a supporting spring is sleeved on the surface of the brake rod, one end of the supporting spring is abutted to the surface of the supporting plate, and the other end of the supporting spring is abutted to the surface of the installation sleeve.

Preferably, the positioning assembly comprises an iron block welded at one end of the brake rod positioned in the installation sleeve, an electromagnet is embedded in the inner wall of the installation sleeve, the electromagnet is electrically communicated with a control button in the car, and the electromagnet corresponds to the iron block in position.

Preferably, the top end of the car is fixedly connected with an extension reinforcing sleeve, and a through hole matched with the brake rod is formed in the surface of the extension reinforcing sleeve.

Preferably, the top end of the extension reinforcing sleeve is fixedly connected with a reset hydraulic rod, and the telescopic end of the reset hydraulic rod corresponds to the position of the supporting plate.

Preferably, the traction assembly comprises a mounting frame and a power box which are fixedly mounted at the top end of the mounting plate, a wind-up roller is rotatably connected to the surface of the mounting frame, a traction rope is wound on the surface of the wind-up roller, and the bottom end of the traction rope is fixedly connected with the top of the car.

Preferably, the center shaft of the wind-up roll extends to the inside of the power box and is fixedly connected with a worm wheel, the front surface of the power box is fixedly connected with a driving motor, the output shaft of the driving motor extends to the inside of the power box and is fixedly connected with a worm, and the worm is meshed with the worm wheel.

The utility model has the technical effects and advantages that:

1. compared with the prior art, this elevator anti-falling mechanism is when using, pull through the traction assembly, the car is at the inside lift of elevator shaft and remove, utilize the leading wheel to slide in the inside of direction slide rail, can ensure the stability that the car removed, and when the elevator appears cutting off the power supply of electro-magnet or initiatively cut off the electro-magnet through control button because of other reasons whereabouts, the electro-magnet loses magnetism, electro-magnet and iron plate separation, under supporting spring's elasticity effect, the brake lever inserts fast and prevents weighing down the inside of brake groove, reach and prevent weighing down the purpose of braking to the car, whole process reaction is quick, and can passively realize preventing weighing down, the practicality is strong.

2. Compared with the prior art, this elevator anti-falling mechanism drives the worm through driving motor and rotates, utilizes worm and worm wheel meshing, drives the wind-up roll and rotates to receive and release the haulage rope, realizes driving the purpose that the car goes up and down, and when driving motor does not work, utilizes the auto-lock of worm and worm wheel, can prevent the wind-up roll rotation to further reach the purpose that prevents that the car from falling, promote the safety in utilization of elevator.

Drawings

FIG. 1 is a schematic view of the front cross-section structure of the present utility model.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

Fig. 3 is a schematic perspective view of a car according to the present utility model.

Fig. 4 is a schematic diagram of the front view of the power box of the utility model.

The reference numerals are: 1. a car; 2. an elevator shaft; 3. a mounting plate; 4. a guide rail; 5. a guide wheel; 6. a mounting sleeve; 7. a brake lever; 8. anti-falling brake grooves; 9. a support plate; 10. a support spring; 11. iron blocks; 12. an electromagnet; 13. extending the reinforcing sleeve; 14. resetting the hydraulic rod; 15. a mounting frame; 16. a power box; 17. a wind-up roll; 18. a traction rope; 19. a worm wheel; 20. a driving motor; 21. a worm; 22. control buttons.

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.

The elevator anti-falling mechanism comprises a lift car 1 and a mounting plate 3 arranged at the top of a lift shaft 2, wherein a guide slide rail 4 is fixedly arranged on the inner wall of the lift shaft 2, guide wheels 5 are arranged on the side wall of the lift car 1, and the guide wheels 5 are matched with the guide slide rail 4.

A traction assembly is arranged between the top end of the mounting plate 3 and the car 1.

The traction assembly comprises a mounting frame 15 and a power box 16 which are fixedly arranged at the top end of the mounting plate 3, a wind-up roller 17 is rotatably connected to the surface of the mounting frame 15, a traction rope 18 is wound on the surface of the wind-up roller 17, and the bottom end of the traction rope 18 is fixedly connected with the top of the car 1.

The center pin of wind-up roll 17 extends to the inside of power case 16 and fixedly connected with worm wheel 19, and the front fixedly connected with driving motor 20 of power case 16, driving motor 20's output shaft extends to the inside of power case 16 and fixedly connected with worm 21, and worm 21 meshes with worm wheel 19.

The whole elevator is communicated with an external power system, the worm 21 is driven to rotate through the driving motor 20, the worm 21 is meshed with the worm wheel 19, the wind-up roller 17 is driven to rotate to wind up and unwind the traction rope 18, the elevator car 1 is lifted and moved, the guide wheel 5 is used for sliding in the guide sliding rail 4, the moving stability of the elevator car 1 can be ensured, when the driving motor 20 breaks down, the wind-up roller 17 can be prevented from rotating by utilizing the self-locking function of the worm 21 and the worm wheel 19, the purpose of preventing the elevator car 1 from falling caused by unwinding the traction rope 18 is achieved, and the use safety of the elevator is improved.

An anti-falling component is arranged between the lift car 1 and the guide sliding rail 4.

The anti-falling assembly comprises a mounting sleeve 6 fixedly connected to the top end of the car 1, a brake rod 7 is slidably connected inside the mounting sleeve 6, and a positioning assembly is arranged between the mounting sleeve 6 and the brake rod 7.

The positioning assembly comprises an iron block 11 welded at one end of the brake rod 7 positioned in the installation sleeve 6, an electromagnet 12 is embedded in the inner wall of the installation sleeve 6, the electromagnet 12 is electrically communicated with a control button 22 in the car 1, and the electromagnet 12 corresponds to the iron block 11 in position.

The inner wall of the guide slide rail 4 is provided with an anti-falling braking groove 8 matched with a braking rod 7, the surface of the braking rod 7 is fixedly connected with a supporting plate 9, the surface of the braking rod 7 is sleeved with a supporting spring 10, one end of the supporting spring 10 is abutted against the surface of the supporting plate 9, and the other end of the supporting spring 10 is abutted against the surface of the mounting sleeve 6.

When the elevator falls off due to power failure or due to other reasons, the electromagnet 12 is powered off passively or actively to cut off the power of the electromagnet 12 through the control button 22, the electromagnet 12 loses magnetism, the electromagnet 12 is separated from the iron block 11, and under the action of the elastic force of the supporting spring 10, the brake rod 7 is quickly inserted into the anti-falling brake groove 8, so that the aim of anti-falling braking on the car 1 is fulfilled, the whole process is quick in reaction, anti-falling can be passively realized, and the practicability is strong.

The top end of the car 1 is fixedly connected with an extension reinforcing sleeve 13, and a through hole matched with the brake rod 7 is formed in the surface of the extension reinforcing sleeve 13.

By providing the extension reinforcing sleeve 13, stability and firmness of the brake lever 7 at the time of braking can be improved.

The top end of the extension reinforcing sleeve 13 is fixedly connected with a reset hydraulic rod 14, and the telescopic end of the reset hydraulic rod 14 corresponds to the position of the supporting plate 9.

When the brake of the car 1 needs to be released later, the external system controls the extension 14 of the reset hydraulic rod to reset the brake rod 7, and the electromagnet 12 is used for adsorbing the iron block 11 to position the brake rod 7, so that the elevator can be reused.

The working process of the utility model is as follows:

when the elevator anti-falling mechanism is used, firstly, the worm 21 is driven to rotate through the driving motor 20, the worm 21 is meshed with the worm wheel 19, the wind-up roller 17 is driven to rotate to retract and unwind the traction rope 18, the elevator car 1 is lifted and moves, the guide wheel 5 is utilized to slide in the guide sliding rail 4, the moving stability of the elevator car 1 can be ensured, when the driving motor 20 breaks down, the wind-up roller 17 can be prevented from rotating by utilizing the self-locking function of the worm 21 and the worm wheel 19, the purpose of preventing the elevator car 1 from falling caused by unwinding of the traction rope 18 is achieved, the use safety of the elevator is improved, when the elevator is in power-off and dropping or dropping due to other reasons, the electromagnet 12 is powered off passively or actively, the electromagnet 12 is powered off through the control button 22, the electromagnet 12 is separated from the iron block 11, the brake lever 7 is rapidly inserted into the anti-falling brake groove 8 under the elastic force of the supporting spring 10, the whole process is fast in response, the passive anti-falling function can be realized, the practicability is strong, when the elevator car 1 is required to be released, the elevator car 1 is braked, the reset by the external control system 14, the reset lever 7 can be reset by the reset lever 11, and the electromagnet 11 can be positioned by the brake lever 11.

This is the working principle of the elevator fall protection mechanism.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides an elevator anti-falling mechanism, includes car (1) and sets up mounting panel (3) at elevator shaft (2) top, its characterized in that: the elevator is characterized in that a guide sliding rail (4) is fixedly arranged on the inner wall of the elevator shaft (2), a guide wheel (5) is arranged on the side wall of the elevator car (1), the guide wheel (5) is matched with the guide sliding rail (4), a traction component is arranged between the top end of the mounting plate (3) and the elevator car (1), and an anti-falling component is arranged between the elevator car (1) and the guide sliding rail (4);

the anti-falling assembly comprises a mounting sleeve (6) fixedly connected to the top end of the car (1), a brake rod (7) is slidably connected to the inside of the mounting sleeve (6), a positioning assembly is arranged between the mounting sleeve (6) and the brake rod (7), an anti-falling brake groove (8) matched with the brake rod (7) is formed in the inner wall of the guide sliding rail (4), a supporting plate (9) is fixedly connected to the surface of the brake rod (7), a supporting spring (10) is sleeved on the surface of the brake rod (7), one end of the supporting spring (10) is abutted to the surface of the supporting plate (9), and the other end of the supporting spring (10) is abutted to the surface of the mounting sleeve (6).

2. The elevator fall protection mechanism of claim 1, wherein: the positioning assembly comprises an iron block (11) welded at one end of the brake rod (7) positioned in the installation sleeve (6), an electromagnet (12) is embedded in the inner wall of the installation sleeve (6), the electromagnet (12) is electrically communicated with a control button (22) in the car (1), and the electromagnet (12) corresponds to the iron block (11).

3. The elevator fall protection mechanism of claim 1, wherein: the top end of the car (1) is fixedly connected with an extension reinforcing sleeve (13), and a through hole matched with the brake rod (7) is formed in the surface of the extension reinforcing sleeve (13).

4. An elevator fall arrest mechanism according to claim 3, wherein: the top end of the extension reinforcing sleeve (13) is fixedly connected with a reset hydraulic rod (14), and the telescopic end of the reset hydraulic rod (14) corresponds to the position of the supporting plate (9).

5. The elevator fall protection mechanism of claim 1, wherein: the traction assembly comprises a mounting frame (15) and a power box (16) which are fixedly arranged at the top end of the mounting plate (3), a winding roller (17) is rotatably connected to the surface of the mounting frame (15), a traction rope (18) is wound on the surface of the winding roller (17), and the bottom end of the traction rope (18) is fixedly connected with the top of the lift car (1).

6. The elevator fall protection mechanism of claim 5, wherein: the center shaft of wind-up roll (17) extends to the inside of headstock (16) and fixedly connected with worm wheel (19), and the front fixedly connected with driving motor (20) of headstock (16), the output shaft of driving motor (20) extends to the inside of headstock (16) and fixedly connected with worm (21), and worm (21) and worm wheel (19) meshing.