Anti-falling device for elevator maintenance

Abstract

The elevator maintenance anti-falling device comprises a containing box, rotating discs are movably connected to the positions, close to the front portion and the rear portion, of the top of the containing box through bearings, the bottoms of the rotating discs penetrate to the top of the inner wall of the containing box and are fixedly connected with first bevel gears, and second bevel gears are meshed with the bottoms of the first bevel gears. The inner wall of the second bevel gear is fixedly connected with a double-thread screw. The spacing between the limiting blocks is adjusted by rotating the rear turntable, so that the spacing between the limiting blocks is larger than that of the elevator door frame, then the placing box is placed on the front side of the elevator door frame, the limiting blocks of the placing box are tightly attached to the elevator door frame, then the front turntable is rotated, and the turntable drives the front limiting block to move towards the outer side. The front limiting block is tightly attached to the inner side of the elevator door frame, finally, the safety buckle is buckled on the hanging ring, anti-falling treatment can be carried out, and therefore the effect of a fixed point structure is achieved.

Description

Technical Field

[0001] This utility model relates to the field of elevator maintenance technology, specifically to an elevator maintenance anti-fall device. Background Technology

[0002] Elevator maintenance refers to the inspection, repair, and upkeep of elevators to ensure their normal operation and safe use. Elevator maintenance covers multiple fields, including mechanical, electrical, and electronic engineering. With the continuous increase in high-rise buildings, the demand for elevators is also increasing. There are many job opportunities in the elevator maintenance industry, especially for highly skilled personnel who are in short supply.

[0003] During elevator maintenance, fall protection devices are needed to protect maintenance workers. Currently, safety belts and safety ropes are often used in conjunction with safety buckles for fall protection. When using them, the safety buckles need to be fixed to fixed points. However, since the outside of elevators is mostly a corridor, there are few fixed points on the corridor to fix the safety buckles, making it impossible to fix the safety buckles. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide an elevator maintenance anti-fall device with the advantage of having a fixed point structure. This solves the problem that currently, most elevators use safety belts and safety ropes in conjunction with safety buckles for fall prevention. In such cases, the safety buckles need to be fixed to fixed points, but since the exterior of elevators is mostly a corridor, there are few fixed points on the corridors where the safety buckles can be fixed, thus making it impossible to secure the safety buckles.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator maintenance anti-fall device, comprising a placement box, wherein a turntable is movably connected to the top of the placement box at both the front and rear positions via bearings, the bottom of the turntable extends through to the top of the inner wall of the placement box and is fixedly connected to a helical gear one, the bottom of the helical gear one meshes with a helical gear two, a double-ended screw is fixedly connected to the inner wall of the helical gear two, and threaded sleeves are threaded to the left and right sides of the double-ended screw, the outer side of the threaded sleeve extends through to the surface of the placement box and is fixedly connected to a limit block, and hanging rings are fixedly connected to the top of the placement box and to the left and right sides of the turntable, and the helical directions of the threads on both sides of the double-ended screw are opposite.

[0006] As a preferred embodiment of this invention, the bottom of the placement box is fixedly connected with an anti-slip pad.

[0007] As a preferred embodiment of this invention, an anti-slip plate is fixedly connected to the outer side of the limiting block.

[0008] As a preferred embodiment of this invention, the front side of the placement box is provided with pulleys.

[0009] As a preferred embodiment of this invention, a rotating handle is fixedly connected to the top of the turntable.

[0010] As a preferred embodiment of this utility model, the top and bottom of the screw sleeve are provided with sliding grooves, the inner wall of the sliding groove is slidably connected to a slider, and the outer side of the slider is fixedly connected to the inner wall of the placement box.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model first rotates the rear turntable to adjust the distance between the limiting blocks so that the distance between the limiting blocks is greater than the distance between the elevator door frames. Then, the placement box is placed on the front side of the elevator door frame so that its limiting blocks are tightly attached to the elevator door frame. Next, the front turntable is rotated, and the turntable drives the front limiting blocks to move outward so that the front limiting blocks are tightly attached to the inner side of the elevator door frame. Finally, the safety buckle is fastened to the hanging ring to perform the anti-fall treatment, thereby achieving the effect of having a fixed point structure.

[0013] 2. By setting an anti-slip pad, this utility model can increase the friction between the placement box and the ground, preventing the placement box from slipping during use. Attached Figure Description

[0014] Figure 1 This is a perspective view of the placement box structure of this utility model;

[0015] Figure 2 This is a front sectional view of the placement box structure of this utility model;

[0016] Figure 3 This is a top sectional view of the placement box structure of this utility model;

[0017] Figure 4 This is a three-dimensional view of the structure of this utility model in use.

[0018] In the diagram: 1. Placement box; 2. Turntable; 3. Helical gear one; 4. Helical gear two; 5. Double-ended screw; 6. Screw sleeve; 7. Limiting block; 8. Hanging ring; 9. Rotating handle; 10. Anti-slip pad; 11. Anti-slip plate; 12. Pulley; 13. Sliding block; 14. Slide groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4As shown, the present invention provides an elevator maintenance anti-fall device, including a placement box 1. A turntable 2 is movably connected to the top of the placement box 1 at the front and rear positions via bearings. The bottom of the turntable 2 extends through to the top of the inner wall of the placement box 1 and is fixedly connected to a helical gear 3. The bottom of the helical gear 3 meshes with a helical gear 4. A double-ended screw 5 is fixedly connected to the inner wall of the helical gear 4. Screw sleeves 6 are threadedly connected to the left and right sides of the double-ended screw 5. The outer side of the screw sleeves 6 extends through to the surface of the placement box 1 and is fixedly connected to a limit block 7. Hanging rings 8 are fixedly connected to the top of the placement box 1 and on the left and right sides of the turntable 2. The spiral directions of the threads on both sides of the double-ended screw 5 are opposite.

[0021] refer to Figure 1 An anti-slip pad 10 is fixedly connected to the bottom of the placement box 1.

[0022] As a technical optimization of this utility model, by setting the anti-slip pad 10, the friction between the placement box 1 and the ground can be increased, preventing the placement box 1 from slipping during use.

[0023] refer to Figure 1 An anti-slip plate 11 is fixedly connected to the outer side of the limiting block 7.

[0024] As a technical optimization of this utility model, by setting the anti-slip plate 11, the friction between the limiting block 7 and the wall can be increased, preventing the limiting block 7 from slipping during use.

[0025] refer to Figure 1 A pulley 12 is provided on the front side of the placement box 1.

[0026] As a technical optimization of this utility model, by setting pulley 12, the safety rope can be guided, which makes it more convenient for users.

[0027] refer to Figure 2 A handle 9 is fixedly connected to the top of the turntable 2.

[0028] As a technical optimization of this utility model, by setting the handle 9, the contact area between the user's hands and the turntable 2 can be increased, making it easier for the user to rotate the turntable 2.

[0029] refer to Figure 2 The top and bottom of the screw sleeve 6 are provided with sliding grooves 14, and the inner wall of the sliding groove 14 is slidably connected to the slider 13. The outer side of the slider 13 is fixedly connected to the inner wall of the placement box 1.

[0030] As a technical optimization of this utility model, by setting the sliding groove 14 and the slider 13, the range of motion of the screw sleeve 6 can be limited to prevent the screw sleeve 6 from disengaging from the double-headed screw 5.

[0031] The working principle and usage process of this utility model are as follows: First, rotate the rear turntable 2. Turntable 2 drives helical gear 3 to rotate, helical gear 3 drives helical gear 4 to rotate, and helical gear 4 drives double-headed screw 5 to rotate. The screw thread causes double-headed screw 5 to move the screw sleeve 6 outwards, and the screw sleeve 6 moves the limiting block 7 outwards. Adjust the distance between the limiting blocks 7 so that the distance between the limiting blocks 7 is greater than the distance between the elevator door frame. Then, place the placement box 1 in front of the elevator door frame, ensuring that its limiting blocks 7 are tightly against the elevator door frame. Next, rotate the front turntable 2. Turntable 2 drives the front limiting block 7 to move outwards, ensuring that the front limiting block 7 is tightly fitted against the inner side of the elevator door frame. Finally, fasten the safety buckle to the hanging ring 8 to prevent falls, thus achieving the effect of a fixed-point structure.

[0032] In summary, this elevator maintenance fall protection device, through the installation of a placement box 1, a turntable 2, a helical gear one 3, a helical gear two 4, a double-ended screw 5, a screw sleeve 6, a limit block 7, and a hanging ring 8, solves the problem that currently, most elevators use safety belts and safety ropes with safety buckles for fall protection. In such cases, the safety buckles need to be fixed to a fixed point, but since the exterior of elevators is often a corridor, there are few fixed points on the corridor to secure the safety buckles, making it impossible to secure them.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator maintenance anti-falling device comprising a placing box (1), characterized in that: The top of the placement box (1) is connected to a turntable (2) via bearings at the front and rear positions. The bottom of the turntable (2) extends through to the top of the inner wall of the placement box (1) and is fixedly connected to a helical gear (3). The bottom of the helical gear (3) is meshed with a helical gear (4). The inner wall of the helical gear (4) is fixedly connected to a double-ended screw (5). The two sides of the double-ended screw (5) have opposite spiral directions. The left and right sides of the double-ended screw (5) are threaded with a threaded sleeve (6). The outer side of the threaded sleeve (6) extends through to the surface of the placement box (1) and is fixedly connected to a limit block (7). The top of the placement box (1) and the left and right sides of the turntable (2) are fixedly connected with hanging rings (8).

2. The elevator maintenance anti-falling device according to claim 1, characterized in that: The bottom of the placement box (1) is fixedly connected to an anti-slip pad (10).

3. The elevator maintenance anti-falling device according to claim 1, characterized in that: An anti-slip plate (11) is fixedly connected to the outer side of the limiting block (7).

4. The elevator maintenance fall arrest device of claim 1, wherein: The front side of the placement box (1) is provided with a pulley (12).

5. The elevator maintenance fall arrest device of claim 1, wherein: A handle (9) is fixedly connected to the top of the turntable (2).

6. The elevator maintenance fall arrest device of claim 1, wherein: The top and bottom of the screw sleeve (6) are provided with sliding grooves (14), and the inner wall of the sliding groove (14) is slidably connected to a slider (13), and the outer side of the slider (13) is fixedly connected to the inner wall of the placement box (1).

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