CN220300060U

CN220300060U - Locking mechanism for elevator maintenance

Info

Publication number: CN220300060U
Application number: CN202321816435.4U
Authority: CN
Inventors: 李响
Original assignee: Tianjin Yaolun Elevator Co ltd
Current assignee: Tianjin Yaolun Elevator Co ltd
Priority date: 2023-07-12
Filing date: 2023-07-12
Publication date: 2024-01-05
Anticipated expiration: 2033-07-12

Abstract

The utility model relates to a locking mechanism for elevator maintenance, which comprises a lift car and two guide rails, wherein a positioning plate is arranged on one side of each guide rail, a top beam is arranged at the upper end of the lift car, two fixing frames are symmetrically arranged on one side of the top beam, a safety pin is inserted into each fixing frame in a drawing way, a first spring is sleeved outside the safety pin, a mounting assembly is arranged on the safety pin, the safety pin is connected with a limiting ring through the mounting assembly, one end of the safety pin is provided with a handle, the other end of the safety pin penetrates through the fixing frames to be connected with the positioning plate in a drawing way, two fixing blocks are symmetrically arranged on the outer side of the safety pin, through holes matched with the fixing blocks are formed in the fixing frames, two fixing chambers matched with the two fixing blocks are formed in one side of the fixing frames, a placing chamber is formed in one side of one fixing chamber, an electrical switch is arranged in the placing chamber, a triggering block is arranged on one side of the fixing block, the lift car can be locked, meanwhile, the electrical safety circuit can be disconnected, the damaged safety pin can be independently replaced, and the safety pin can be fixed, and the safety pin can be prevented from being accidentally stretched out.

Description

Locking mechanism for elevator maintenance

Technical Field

The utility model relates to the technical field of elevator overhaul, in particular to a locking mechanism for elevator overhaul.

Background

In the daily maintenance work of an elevator, regular overhauling is an important link for guaranteeing the operation safety of the elevator. When maintenance personnel overhauls the elevator without the machine room, the elevator car is required to be used as an overhaul platform, and a locking device is required to be arranged at the upper end of the elevator car so as to lock the elevator car on the guide rail for guaranteeing the safety of the maintenance personnel.

When the existing locking mechanism for elevator maintenance locks the elevator car, the electric safety loop of the elevator cannot be disconnected at the same time, so that when the elevator is maintained, the power supply of the elevator is not completely closed, or the elevator can automatically run, the personal safety of maintenance personnel is directly threatened, the standard requirements of safety operation cannot be met, and the potential safety hazard is increased; secondly, when the existing locking mechanism for elevator maintenance is locked, the safety pin needs to bear larger force, the phenomenon that deformation and damage are easy to occur after long-time use needs to be replaced, the safety pin is inconvenient to detach and install, and the whole locking mechanism needs to be detached for replacement, so that resources are wasted, and the maintenance cost is increased; in addition, when the existing locking mechanism for elevator maintenance is not needed to be used, the safety pin is carelessly outwards extended and cannot be found due to vibration and the like when the elevator runs, so that when the safety pin moves to the positioning plate matched with the safety pin in the elevator running process, the condition that the safety pin collides with the positioning plate can occur, serious safety accidents occur, and great potential safety hazards exist.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a locking mechanism for elevator maintenance, which solves the problem that an electric safety loop of an elevator cannot be disconnected at the same time when an elevator car is locked in the existing locking mechanism for elevator maintenance.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a locking mechanism for elevator maintenance, includes car and two guide rails, every guide rail one side is equipped with the locating plate, the car upper end is equipped with the back timber, back timber one side symmetry is equipped with two fixed frames, every take out in the fixed frame and insert and be equipped with the relief pin, the movable cover in the relief pin outside is equipped with first spring, be equipped with the installation component on the relief pin, the relief pin is connected with the spacing ring through the installation component, relief pin one end is equipped with the handle, and the other end passes fixed frame and locating plate and takes out to insert and be connected, the relief pin outside symmetry is equipped with two fixed blocks, be equipped with on the fixed frame with fixed block matched with through-hole, one of them fixed frame is equipped with two fixed rooms with two fixed block matched with, one of them fixed block one side is equipped with the trigger piece, the installation component includes two slots that the relief pin outside is equipped with, the slot internalization is equipped with the plug-in block, is convenient for carry out the safety loop disconnection with the elevator when locking to the car for the elevator is supplied the electricity to stop to realize the electrical safety specification, thereby has reduced the requirement for maintenance safety standard of personnel.

In a further preferred embodiment, the two insert blocks are connected with the stop collar in a drawing and inserting manner, and two mounting chambers matched with the insert blocks are arranged inside the stop collar so as to facilitate movement of the insert blocks.

In a further preferred embodiment, a screw is rotatably connected to an end of each insert away from the safety pin through a bearing, the screw is in threaded connection with the installation chamber, and one end of the screw penetrates through the installation chamber and extends to the outside of the installation chamber, so that the insert can be pushed conveniently.

In a further preferred embodiment, two support plates are symmetrically arranged at the upper end of the car, and push rods are inserted into each support plate in a drawing manner, so that the push rods can move conveniently.

In a further preferred aspect, a push plate is disposed at one end of the push rod, so as to facilitate driving the push rod.

In a further preferred embodiment, a second spring is movably sleeved on the outer side of the push rod, the second spring is arranged between the push plate and the support plate, and when the push plate moves, the second spring is compressed.

In a further preferred embodiment, one end of the push rod penetrates through the supporting plate to be connected with a fixing shell matched with the handle, and the lower end of the fixing shell is in sliding connection with the car through a track structure, so that the handle is conveniently fixed.

(III) beneficial effects

Compared with the prior art, the utility model provides a locking mechanism for elevator maintenance, which has the following beneficial effects:

1. according to the elevator safety circuit locking device, the elevator safety circuit can be disconnected while the elevator is locked through the cooperation of the elevator car, the guide rail, the positioning plate, the top beam, the fixing frame, the safety pin, the first spring, the limiting ring, the handle, the fixing block, the through hole, the fixing chamber, the placing chamber, the electric switch and the triggering block, so that the elevator power supply stops to realize the electric locking function when the elevator is overhauled, the personal safety of an overhauler is doubly ensured, the standard requirement of safety operation is met, and the potential safety hazard is reduced.

2. According to the utility model, the damaged safety pin can be quickly detached by matching the safety pin, the limiting ring, the slot, the insert block, the mounting chamber and the screw rod, the whole locking mechanism is not required to be replaced, the resource is saved, the maintenance cost is reduced, and the operation method is simple and quick, so that the safety pin is convenient to detach and mount.

3. According to the elevator locking mechanism, the supporting plate, the push rod, the push plate, the second spring and the fixing shell are matched, so that the handle can be fixed when the whole locking mechanism is not used, and the safety pin is fixed, the situation that the safety pin is carelessly extended outwards to collide with the positioning plate when the elevator runs is avoided, serious safety accidents are avoided, and potential safety hazards are reduced.

Drawings

Fig. 1 is a schematic diagram of the whole structure of a locking mechanism for elevator maintenance in the utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1A according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a portion of a fixing frame and a connecting member thereof according to the present utility model;

FIG. 4 is a schematic view showing a sectional structure of a portion of a fixing chamber and a connecting member thereof according to the present utility model;

FIG. 5 is a schematic view of a cross-sectional structure of a portion of a limiting frame and a connecting member thereof according to the present utility model;

FIG. 6 is a schematic sectional view showing a state that a handle is fixed to a fixing case in the present utility model.

In the figure: 1. a car; 2. a guide rail; 3. a positioning plate; 4. a top beam; 5. a fixed frame; 6. a safety pin; 7. a first spring; 8. a limiting ring; 9. a handle; 10. a fixed block; 11. a through hole; 12. a stationary chamber; 13. a placement chamber; 14. an electrical switch; 15. a trigger block; 16. a slot; 17. inserting blocks; 18. a mounting chamber; 19. a screw; 20. a support plate; 21. a push rod; 22. a push plate; 23. a second spring; 24. and fixing the shell.

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.

Embodiment one:

referring to fig. 1-6, a locking mechanism for overhauling an elevator comprises a car 1 and two guide rails 2, wherein a positioning plate 3 is arranged on one side of each guide rail 2, a top beam 4 is arranged at the upper end of the car 1, two fixing frames 5 are symmetrically arranged on one side of the top beam 4, a safety pin 6 is inserted into each fixing frame 5 in a drawing manner, a first spring 7 is movably sleeved outside the safety pin 6, a mounting assembly is arranged on the safety pin 6, the safety pin 6 is connected with a limiting ring 8 through the mounting assembly, a handle 9 is arranged at one end of the safety pin 6, the other end of the safety pin penetrates through the fixing frames 5 and is connected with the positioning plate 3 in a drawing manner, two fixing blocks 10 are symmetrically arranged outside the safety pin 6, through holes 11 matched with the fixing blocks 10 are formed in the fixing frames 5, two fixing chambers 12 matched with the two fixing blocks 10 are formed in one side of the fixing frames 5, a placing chamber 13 is formed in one side of the fixing chambers 12, an electrical switch 14 is arranged in the placing chamber 13, a triggering block 15 is arranged on one side of the fixing block 10, two slots 16 are arranged outside the safety pin 6, and an inserting block 17 is movably arranged in the inserting slot 16.

In this embodiment, two insert blocks 17 are both connected with the stop collar 8 in a drawing and inserting manner, two installation chambers 18 matched with the insert blocks 17 are arranged on the inner side of the stop collar 8, and the insert blocks 17 can move along the installation chambers 18 towards the direction of the safety pin 6 so as to be inserted into the slot 16, and at this time, the stop collar 8 and the safety pin 6 can be installed.

In this embodiment, the end of each insert 17 away from the safety pin 6 is rotatably connected to a screw 19 through a bearing, the screw 19 is in threaded connection with the installation chamber 18, one end of the screw 19 passes through the installation chamber 18 and extends to the outside of the installation chamber 18, and when the screw 19 is rotated, the screw 19 rotates around the rotational connection with the insert 17, and due to the threaded connection of the screw 19 with the installation chamber 18, the insert 17 is pushed to move while the screw 19 rotates.

In this embodiment, two support plates 20 are symmetrically arranged at the upper end of the car 1, a push rod 21 is inserted into each support plate 20, the push rod 21 is pushed, and the push rod 21 moves along the connection part with the support plate 20.

In this embodiment, a push plate 22 is disposed at one end of the push rod 21, so as to push the push plate 22, and the push plate 22 drives the push rod 21 to move.

In this embodiment, a second spring 23 is movably sleeved on the outer side of the push rod 21, the second spring 23 is arranged between the push plate 22 and the support plate 20, and when the push plate 22 moves, the second spring 23 is compressed.

In this embodiment, one end of the push rod 21 passes through the support plate 20 to be connected with a fixing shell 24 matched with the handle 9, the lower end of the fixing shell 24 is slidably connected with the car 1 through a track structure, and when the push rod 21 moves, the push rod 21 drives the fixing shell 24 to move along the sliding connection position with the car 1, so that the fixing shell 24 fixes the handle 9.

Embodiment two:

to sum up, when using, promote two push plates 22 in proper order, push plate 22 drives push rod 21 and removes, push rod 21 drives fixed shell 24 and removes, make fixed shell 24 and handle 9 separate, promote handle 9 this moment, handle 9 drives relief pin 6 and spacing ring 8 and remove, relief pin 6 inserts on locating plate 3, thereby lock car 1, first spring 7 compresses, relief pin 6 drives fixed block 10 and trigger piece 15 and passes through hole 11 and remove to fixed frame 5, rotate handle 990 degrees, handle 9 drives relief pin 6, spacing ring 8, fixed block 10 and trigger piece 15 rotate, at this moment, two fixed blocks 10 aim at two fixed rooms 12 respectively, trigger piece 15 aims at the electrical switch 14 in the placing room 13, loosen handle 9, under the effect of first spring 7, make two fixed blocks 10 remove respectively in fixed room 12 and fix this moment, thereby fix safety pin 6, simultaneously fixed block 10 drives trigger piece 15 and removes in place room 13, trigger electrical switch 14, make the elevator stop power supply and realize the function that the elevator can overhaul. The electrical switch controls the elevator to supply power to realize the electrical locking function in the prior art, and no description is given here. When the car 1 needs to be unlocked, the handle 9 is pushed first, the handle 9 drives the safety pin 6, the limiting ring 8, the fixed block 10 and the trigger block 15 to move, the fixed block 10 and the trigger block 15 move out of the fixed chamber 12, at the moment, the electric switch 14 is opened, the electric loop is connected, the handle 990 degrees are rotated in opposite directions, the fixed block 10 aligns to the through hole 11, the handle 9 is loosened under the action of the spring, the limiting ring 8 drives the safety pin 6 to be separated from the positioning plate 3, thereby unlocking, the elevator can be put into operation again, the safety pin 6 drives the handle 9 to move back to the original position, meanwhile, the push plate 22 is pushed, the push plate 22 drives the push rod and the fixed shell 24 to move, the second spring 23 compresses, the push plate 22 is loosened after the handle 9 moves back to the original position, and the fixed shell 24 fixes the handle 9 under the action of the second spring 23.

Embodiment III:

in summary, when the safety pin 6 needs to be replaced in use, the screw 19 is rotated in sequence, the screw 19 rotates around the rotating joint with the insert block 17, and the insert block 17 is pulled to move out of the slot 16 along the installation chamber 18 while the screw 19 rotates due to the threaded connection between the screw 19 and the installation chamber 18, so that the limit ring 8 is separated from the safety pin 6, the pull handle can be pulled, the pull handle drives the safety pin 6 to be separated from the fixed frame 5, the safety pin 6 drives the fixed block 10 and the trigger block 15 to be detached, and the replaced safety pin 6 can be installed by the opposite operation.

In all the above mentioned embodiments, the welding, the matching connection of the bolt and the nut, the bolt or the screw connection or other known connection modes can be selected according to the actual situation, and are not described in detail herein, the above description refers to the write-in fixed connection, and the welding is preferentially considered, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art should be covered by the protection scope of the present utility model if the technical scheme and the inventive concept thereof are equivalent or changed within the scope of the present utility model.

Claims

1. The utility model provides a locking mechanism for elevator maintenance, includes car (1) and two guide rails (2), every guide rail (2) one side is equipped with locating plate (3), its characterized in that, car (1) upper end is equipped with back timber (4), back timber (4) one side symmetry is equipped with two fixed frame (5), every take out in fixed frame (5) and insert and be equipped with safety pin (6), safety pin (6) outside movable sleeve is equipped with first spring (7), be equipped with the installation component on safety pin (6), safety pin (6) are connected with spacing ring (8) through the installation component, safety pin (6) one end is equipped with handle (9), and the other end passes fixed frame (5) and locating plate (3) and take out to insert and be connected, safety pin (6) outside symmetry is equipped with two fixed blocks (10), be equipped with on fixed frame (5) with through-hole (11) with fixed block (10) matched with, one side is equipped with two fixed chambers (12) with two fixed blocks (10), one of them fixed chamber (12) is equipped with one of them fixed block (13), one of them side (13) is equipped with one of them fixed block (13) and is equipped with one of them fixed chamber (13), the installation assembly comprises two slots (16) arranged on the outer side of the safety pin (6), and inserting blocks (17) are movably arranged in the slots (16).

2. The locking mechanism for elevator maintenance according to claim 1, wherein: the two inserting blocks (17) are connected with the limiting ring (8) in a drawing and inserting mode, and two installing chambers (18) matched with the inserting blocks (17) are arranged on the inner side of the limiting ring (8).

3. The locking mechanism for elevator maintenance according to claim 2, wherein: one end of each insert block (17) far away from the safety pin (6) is rotatably connected with a screw rod (19) through a bearing, the screw rod (19) is in threaded connection with the installation chamber (18), and one end of the screw rod (19) penetrates through the installation chamber (18) and extends to the outside of the installation chamber (18).

4. The locking mechanism for elevator maintenance according to claim 1, wherein: two supporting plates (20) are symmetrically arranged at the upper end of the lift car (1), and push rods (21) are inserted into the supporting plates (20).

5. The locking mechanism for elevator maintenance according to claim 4, wherein: one end of the push rod (21) is provided with a push plate (22).

6. The locking mechanism for elevator maintenance according to claim 5, wherein: the push rod (21) is movably sleeved with a second spring (23), and the second spring (23) is arranged between the push plate (22) and the support plate (20).

7. The locking mechanism for elevator maintenance according to claim 6, wherein: one end of the push rod (21) penetrates through the supporting plate (20) to be connected with a fixed shell (24) matched with the handle (9), and the lower end of the fixed shell (24) is in sliding connection with the lift car (1) through a track structure.