Elevator anti-falling device for elevator maintenance

Abstract

The utility model relates to the technical field of elevator anti-falling, and discloses an elevator anti-falling device for elevator maintenance, which comprises a square mounting block, a telescopic support rod is mounted on one side of the square mounting block, a support block is mounted at the center of one end of the telescopic support rod, a mounting pedestal is arranged at one end of the support block, and the mounting pedestal is connected with the square mounting block. According to the anti-falling device, the rotating roller and the limiting clamping groove are arranged, so that the problem that in the process of installing the anti-falling device, the anti-falling device is not prone to falling is solved; according to the steel cable safety rope adjusting device, the situation that the steel cable rubs with edges and corners of the edge of an elevator shaft when a maintainer enters the elevator shaft to move due to the fact that a clamping assembly is fixed to an elevator door through a baffle is avoided, and meanwhile the problem that the steel cable rubs with the edges and corners of the edge of the elevator shaft when the maintainer adjusts the steel cable safety rope is solved; by means of the braking anchoring hook and the special-shaped locking block, when the steel cable safety rope is adjusted to fall at a top speed, anchoring and locking can be conducted in time.

Description

Technical Field

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

[0002] An elevator is a fixed lifting device used to carry people or goods to designated floors. It is often installed inside a building and its structure mainly consists of components such as a traction machine, guide rails, counterweight, safety devices, signal control system, car, and landing doors.

[0003] In order to improve the service life of elevators and reduce the failure rate, maintenance personnel need to perform regular maintenance on elevators. However, maintenance personnel inevitably need to enter the elevator pit or top floor to work. When performing elevator maintenance, various unexpected accidents may occur, causing the car or counterweight to suddenly drop or rise, which can easily lead to serious safety accidents. In order to avoid accidents, fall protection devices need to be installed.

[0004] Existing elevator fall arrestors for elevator maintenance typically involve fixing clamping components to the elevator doorway via a baffle. Workers then enter the elevator shaft by securing the steel safety rope through the baffle. This can cause the safety rope to rub against the sharp edges of the shaft, potentially leading to breakage and a fall. Furthermore, adjusting the safety rope during maintenance is cumbersome because the worker's position within the shaft is not fixed. This manual adjustment is prone to jamming and slippage, compromising safety and increasing the risk of falls. The process is inconvenient and tedious. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an elevator fall arrest device for elevator maintenance. It solves the problem of friction between the steel cable and the edges of the elevator shaft when maintenance personnel enter the elevator shaft during installation, preventing the clamping component from being fixed to the elevator doorway by a baffle. This avoids the risk of the safety cable breaking due to prolonged friction, thus improving safety performance. Furthermore, it addresses the issue of timely anchoring and locking of the safety cable during adjustments by maintenance personnel, thanks to the braking anchor hook and irregular locking block. This prevents situations where adjustments cannot guarantee safety and avoids fall accidents, improving applicability, simplifying operation, and further enhancing maintenance efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an elevator anti-fall device for elevator maintenance, comprising a square mounting block, a telescopic support rod mounted on one side of the square mounting block, a support block mounted at the center of one end of the telescopic support rod, a mounting base provided at one end of the support block, a rotating roller provided at the upper end of the mounting base, a plurality of irregularly shaped locking blocks evenly spaced around the inner sidewall of the rotating roller, a rotating shaft penetrating the center of the inner side of the rotating roller, brake blocks symmetrically mounted in pairs on one side of the rotating shaft, brake springs symmetrically mounted in pairs on one side of the brake blocks, and brake anchor hooks symmetrically mounted in pairs on one side of the brake springs;

[0009] Preferably, the inner side of the telescopic support rod is provided with a plurality of anchor bolt holes at equal intervals, and the inner side of the anchor bolt holes is provided with anchor bolts. The lower end of the square mounting block is provided with a limit rod, and the inner side of the limit rod is provided with a plurality of limit bolt holes at equal intervals.

[0010] Preferably, a limiting bolt is installed through the inner side of the limiting screw hole, and a limiting groove is opened through the center of the inner side of the limiting rod. Limiting plates are symmetrically installed in pairs on the inner side of the limiting groove, and a limiting spring is provided at one end of each pair of symmetrical limiting plates.

[0011] Preferably, each of the square mounting blocks has a plurality of telescopic cylinders symmetrically installed in pairs on its inner side, and each telescopic cylinder has a telescopic movable shaft at one end, and each telescopic movable shaft has a telescopic anchor plate at one end.

[0012] Preferably, a drive motor is provided at the upper end of the mounting base near the rotating roller, and brake shoes are arranged around the outer wall of the rotating shaft. Locking blocks are symmetrically arranged at the upper ends of the brake shoes, and a magnet is provided through one side of the locking blocks.

[0013] Preferably, each of the square mounting blocks has a plurality of buffer bases symmetrically arranged in pairs at its upper end, and each buffer base has a plurality of buffer springs at its upper end.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides an elevator fall prevention device for elevator maintenance, which has the following beneficial effects:

[0016] 1. When maintenance personnel are installing the fall arrestor, the rotating roller and the limiting slot work together to allow the steel cable safety rope wound on the outer wall of the rotating roller to be embedded in the inner side of the limiting slot. Then, the limiting plate and the movable spring set in the inner side of the limiting slot limit and fix the steel cable safety rope, so that the clamping component will not be fixed to the elevator door by the baffle, which would cause the steel cable safety rope to rub against the edge of the elevator shaft when maintenance personnel enter the elevator shaft. This avoids the steel cable safety rope from breaking due to long-term friction, thus preventing the maintenance personnel from falling and improving its safety performance.

[0017] 2. The system is equipped with a brake anchor hook and a shaped locking block that work together. When maintenance personnel adjust the steel cable safety rope and experience a rapid fall, the brake anchor hook, under high-speed centrifugal force, breaks free from the control of the brake spring and anchors itself to the shaped locking block for secure locking. This prevents situations where maintenance personnel cannot guarantee safety during adjustments, thus avoiding fall accidents. This improves its applicability, simplifies the operation, and further enhances maintenance efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram showing the internal cross-section of the square mounting block of this utility model;

[0021] Figure 3 This is a partially enlarged schematic diagram of the rotating roller structure of this utility model;

[0022] Figure 4 This is an enlarged schematic diagram of the brake shoe structure of this utility model.

[0023] The labels in the diagram represent: 1. Square mounting block; 2. Telescopic support rod; 3. Support block; 4. Mounting platform; 5. Rotating roller; 6. Irregular locking block; 7. Rotating shaft; 8. Brake block; 9. Brake spring; 10. Brake anchor hook; 11. Anchor bolt hole; 12. Anchor bolt; 13. Limit rod; 14. Limit bolt hole; 15. Limit bolt; 16. Limit slot; 17. Limit plate; 18. Telescopic cylinder; 19. Telescopic movable shaft; 20. Telescopic anchor plate; 21. Drive motor; 22. Brake shoe; 23. Locking block; 24. Magnet; 25. Buffer base; 26. Buffer spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Example 1

[0027] Reference Figure 1-4 This is the first embodiment of the present utility model, which provides an elevator anti-fall device for elevator maintenance, including a square mounting block 1, a telescopic support rod 2 installed on one side of the square mounting block 1, and a support block 3 installed at the center of one end of the telescopic support rod 2. A mounting base 4 is provided at one end of the support block 3, and a rotating roller 5 is provided at the upper end of the mounting base 4. Several irregular locking blocks 6 are evenly spaced around the inner side wall of the rotating roller 5, and a rotating shaft 7 is installed through the center of the inner side of the rotating roller 5. Braking blocks 8 are symmetrically installed in pairs on one side of the rotating shaft 7, and braking springs 9 are symmetrically installed in pairs on one side of the braking blocks 8. Braking anchor hooks 10 are symmetrically provided in pairs on one side of the braking springs 9.

[0028] The inner side of the telescopic support rod 2 is provided with several anchor bolt holes 11 at equal intervals, and the inner side of the anchor bolt holes 11 is provided with anchor bolts 12. The lower end of the square mounting block 1 is provided with a limit rod 13, and the inner side of the limit rod 13 is provided with several limit bolt holes 14 at equal intervals. The inner side of the limit bolt holes 14 is provided with limit bolts 15, and the center of the inner side of the limit rod 13 is provided with a limit slot 16. The inner side of the limit slot 16 is symmetrically provided with two limit plates 17, and one end of each pair of symmetrical limit plates 17 is provided with a limit spring. The inner side of the square mounting block 1 is symmetrically provided with two telescopic cylinders 18, and one end of each telescopic cylinder 18 is provided with a telescopic movable shaft 19. One end of each telescopic movable shaft 19 is provided with a telescopic anchor plate 20.

[0029] During the installation and use of the fall arrestor, maintenance personnel can activate the telescopic cylinder 18 located inside the square mounting block 1. This drives the telescopic movable shaft 19, causing the large-diameter cylinder inside to extend hydraulically first. After reaching the end of its stroke, the slightly smaller diameter cylinder of the telescopic movable shaft 19 begins to extend, and so on, until the smallest telescopic movable shaft 19 cylinder extends. This causes the telescopic anchor plate 20 to be anchored inside the elevator shaft. Furthermore, depending on the size of the elevator shaft, the telescopic support rod 2 between the two symmetrical square mounting blocks 1 can be manually adjusted. Then, the anchor bolt 12 is inserted into the anchor bolt hole 11 and rotated to anchor and lock, making the fall arrestor more securely installed inside the elevator shaft. Simultaneously, the support block 3 is fixedly installed in the middle of one side of the telescopic support rod 2, and the mounting base 4 is fixedly installed on the support block. On one side of the mounting base 4, the rotating roller 5 is fixedly installed on the upper end of one side of the mounting base 4. The steel cable safety rope is wound and installed on the outer side wall of the rotating roller 5. The limiting groove 16 opened at the center of the inner side of the limiting rod 13 is installed on the lower end of the rotating roller 5, so that the steel cable safety rope wound on the outer side wall of the rotating roller 5 can be embedded in the inner side of the limiting groove 16. Then, the limiting plate 17 and the movable spring inside the limiting groove 16 limit and fix the steel cable safety rope, so that the clamping assembly will not be fixed at the elevator door through the baffle, causing the steel cable safety rope to rub against the edge of the elevator shaft when maintenance personnel enter the elevator shaft. This avoids the steel cable safety rope from breaking due to long-term friction, thus preventing maintenance personnel from falling and improving its safety performance.

[0030] Example 2

[0031] Reference Figure 1-4This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a drive motor 21 is provided at the upper end of the mounting base 4 near the rotating roller 5, and a brake shoe 22 is provided around the outer side wall of the rotating shaft 7. Locking blocks 23 are symmetrically arranged in pairs at the upper end of the brake shoes 22, and a magnet 24 is provided through one side of the locking blocks 23. Several buffer bases 25 are symmetrically arranged in pairs at the upper end of the square mounting block 1, and several buffer springs 26 are provided at the upper end of each buffer base 25.

[0032] When maintenance personnel adjust the steel cable safety rope, the brake anchor hook 10 and the irregular locking block 6 work together to make the rotating shaft 7 rotate at high speed when the maintenance personnel adjust the steel cable safety rope. As a result, the brake anchor hook 10 gets rid of the control of the brake block 8 and the brake spring 9 under the high-speed centrifugal force, and then the brake anchor hook 10 anchors the irregular locking block 6 for anchoring and locking.

[0033] During braking, the brake shoe 22 braking device generates corresponding braking pressure on the locking block 23 according to the command of the magnet 24. This pressure generates a thrust on the locking block 23 through the magnet 24. Through the transmission and distribution of a series of rods in the brake shoe 22, each brake shoe 22 is pressed against the rotating shaft 7 and generates a certain pressure. The rotating shaft 7 and the brake shoe 22 slide relative to each other, generating friction, which is finally converted into braking force. This avoids situations where maintenance personnel cannot guarantee safety when making adjustments, and also avoids the occurrence of falling accidents. This improves its applicability, simplifies the operation steps, and further improves maintenance efficiency.

[0034] The remaining structure is the same as that in Example 1.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An elevator fall prevention device for elevator maintenance, comprising a square mounting block (1), characterized in that: A telescopic support rod (2) is installed on one side of the square mounting block (1), and a support block (3) is installed at the center of one end of the telescopic support rod (2). A mounting base (4) is provided at one end of the support block (3), and a rotating roller (5) is provided at the upper end of the mounting base (4). Several irregular locking blocks (6) are evenly spaced around the inner side wall of the rotating roller (5), and a rotating shaft (7) is installed through the center of the inner side of the rotating roller (5). Braking blocks (8) are symmetrically installed in pairs on one side of the rotating shaft (7), and braking springs (9) are symmetrically installed in pairs on one side of the braking blocks (8). Braking anchor hooks (10) are symmetrically provided in pairs on one side of the braking springs (9).

2. The elevator fall prevention device for elevator maintenance according to claim 1, characterized in that: The telescopic support rod (2) has several anchor bolt holes (11) evenly spaced through its inner side, and anchor bolts (12) are installed through its inner side. The square mounting block (1) has a limit rod (13) at its lower end, and a number of limit bolt holes (14) are evenly spaced through its inner side.

3. The elevator fall prevention device for elevator maintenance according to claim 2, characterized in that: A limiting bolt (15) is installed through the inner side of the limiting screw hole (14), and a limiting slot (16) is opened through the center of the inner side of the limiting rod (13). Limiting plates (17) are symmetrically installed on the inner side of the limiting slot (16), and a limiting spring is provided at one end of each pair of symmetrical limiting plates (17).

4. The elevator fall prevention device for elevator maintenance according to claim 1, characterized in that: Several telescopic cylinders (18) are symmetrically installed on the inner side of each square mounting block (1), and each telescopic cylinder (18) is provided with a telescopic movable shaft (19) at one end, and a telescopic anchor plate (20) is provided at one end of each telescopic movable shaft (19).

5. The elevator fall prevention device for elevator maintenance according to claim 1, characterized in that: The upper end of the mounting base (4) near the rotating roller (5) is provided with a drive motor (21), and the outer side wall of the rotating shaft (7) is surrounded by brake shoes (22). The upper ends of the brake shoes (22) are symmetrically provided with locking blocks (23), and a magnet (24) is provided through one side of the locking blocks (23).

6. The elevator fall prevention device for elevator maintenance according to claim 1, characterized in that: The upper end of the square mounting block (1) is symmetrically provided with several buffer bases (25) in pairs, and the upper end of the buffer bases (25) is provided with several buffer springs (26).

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