A fall protection device for horizontal guide rails of power transmission towers

Abstract

This utility model discloses a fall arrest device for a horizontal guide rail of a power transmission tower, belonging to the technical field of guide rail fall arrest devices. It includes a rigid guide rail, one side of which is connected to the outer wall of the tower via a positioning frame; and a fall arrestor, comprising a fall arrestor shell, both ends of which are connected to adjusting shells via first threaded rods. The fall arrestor shell and adjusting shells are wrapped around the side of the rigid guide rail away from the positioning frame. A fall arrestor hook is rotatably installed inside the fall arrestor shell, and a first guide wheel is rotatably installed inside the fall arrestor shell. The adjustable fall arrestor structure allows the device to effectively adapt to different types of rigid guide rails for stable installation and use, thereby improving the flexibility and adaptability of the device.

Description

Technical Field

[0001] This utility model relates to the technical field of guide rail anti-fall devices, specifically an anti-fall device for horizontal guide rails of power transmission towers. Background Technology

[0002] The tower guide rail fall arrestor is a safety protection system used for high-altitude operations. It uses a combination of guide rails and self-locking devices to protect workers from falling while climbing and moving. Its core principle is to use a mechanical locking mechanism to quickly fix personnel in place at the moment of fall, preventing high-altitude fall accidents. It mainly consists of two parts: rigid guide rails and fall arrestors.

[0003] An investigation revealed that a utility model patent discloses a guide rail fall prevention device (publication number: CN216222676U), comprising a housing. A limiting groove is formed on the front of the housing, and a brake rod is disposed inside the limiting groove. One end of the brake rod is movably connected to a connecting shaft. A U-shaped column is fixedly connected to one side of the outer surface of the connecting shaft, and a first fixing ring is fixedly connected to one side of the outer surface of the U-shaped column. A second fixing ring is movably connected to one side of the first fixing ring. This guide rail fall prevention device, through the arrangement of the connecting shaft, U-shaped column, first fixing ring, and second fixing ring, allows for easy operation. In use, the safety rope is first fixed to the unloading buckle, and then the fall prevention device is installed on the guide rail. During operation, when the worker moves or rotates a short distance, the safety rope causes the unloading buckle to rotate. The second fixing ring can rotate at any angle on the first fixing ring, allowing the safety rope to rotate freely and preventing entanglement, greatly increasing convenience.

[0004] When the aforementioned patents are used, the fall arrestor and the guide rail work together, so the size of the fall arrestor is mostly a fixed and non-adjustable structure. As a result, the fall arrestor can only be used with a guide rail of a single size, thus reducing the adaptability of the device.

[0005] Therefore, this utility model provides a fall prevention device for the horizontal guide rail of a power transmission tower to solve the above-mentioned problems. Utility Model Content

[0006] (a) Technical problems to be solved This utility model provides a fall prevention device for the horizontal guide rail of a power transmission tower, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a fall prevention device for a horizontal guide rail of a power transmission tower, comprising a rigid guide rail, one side of which is connected to the outer wall of the tower via a positioning frame; A fall arrestor includes a fall arrestor shell, both ends of which are connected to an adjustment shell via a first threaded rod. The fall arrestor shell and the adjustment shell are wrapped around the side of a rigid guide rail away from the positioning frame. A fall arrestor hook is rotatably provided inside the fall arrestor shell. A first guide wheel is rotatably provided inside the fall arrestor shell. A second guide wheel is rotatably provided inside the fall arrestor hook. The first guide wheel and the second guide wheel rotatably abut against the outer wall of the rigid guide rail.

[0008] As a preferred technical solution of this application, the rigid guide rail has an I-shaped structure, and the outer wall of one end of the rigid guide rail located in the fall arrester is uniformly coated with a wear-resistant coating, and the wear-resistant coating is either a nano-composite coating or an amorphous coating.

[0009] As a preferred technical solution of this application, the cross-section of the adjustment shell is L-shaped, and the adjustment shells are symmetrically distributed on both sides of the fall arrestor shell. The side of the adjustment shell that is not installed with the second guide wheel is connected to an extrusion assembly.

[0010] As a preferred technical solution of this application, the first guide wheel and the second guide wheel protrude into the interior of the anti-fall shell or the adjustment shell, and the tangential positions of the first guide wheel and the second guide wheel abut against the outer wall of the rigid guide rail.

[0011] As a preferred technical solution of this application, the adjusting shell is provided with a rotating groove, and a first threaded rod is rotatably connected inside the rotating groove. The fall protection shell is provided with threaded holes on both sides that are adapted to the first threaded rod. The fall protection hook is provided with positioning holes symmetrically on the upper and lower sides corresponding to the first threaded rod, and a first guide rod is fixedly connected inside the positioning hole. The first guide rod is slidably inserted into the inside of the fall protection shell.

[0012] As a preferred technical solution of this application, the extrusion assembly includes a second threaded rod, which is threadedly connected to the adjusting shell. The second threaded rod is rotatably connected to a rubber plate, and a second guide rod is fixedly connected to one side of the rubber plate.

[0013] As a preferred technical solution of this application, the second threaded rod and the second guide rod are located on the same side of the rubber plate, and the second guide rod slides through to the outside of the adjusting shell, and a rubber pad is provided on the side of the rubber plate away from the rubber plate.

[0014] (III) Beneficial Effects The beneficial effects of this application are as follows: This invention, through its adjustable fall arrestor structure, allows the device to be effectively adapted to different types of rigid guide rails for stable installation, thereby improving its flexibility and adaptability. The invention utilizes a compression component, with a second threaded rod driving the rubber plate back and forth, ensuring contact between the rubber plate and the rigid guide rail. This increases the friction between the fall arrestor and the guide rail. Furthermore, the adjustable structure enhances its positioning adaptability and flexibility, preventing the fall arrestor from becoming loose and failing to achieve proper positioning. Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the present utility model; Figure 2 This is a cross-sectional structural diagram of the fall arrester of this utility model in its installed state. Figure 3 This is a schematic diagram of a partial explosion structure of the fall arrestor of this utility model; Figure 4 This is a schematic diagram of the centerline cross-sectional structure of the fall arrestor of this utility model.

[0015] In the picture: 1. Rigid guide rail; 2. Positioning frame; 3. Fall arrestor; 31. Fall arrestor shell; 32. Fall arrestor hook; 33. Adjusting shell; 34. First guide wheel; 35. Second guide wheel; 36. Rotating groove; 37. Positioning hole; 38. First threaded rod; 39. First guide rod; 4. Extrusion assembly; 41. Second threaded rod; 42. Rubber plate; 43. Second guide rod. Detailed Implementation

[0016] 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.

[0017] like Figure 1-4As shown, this utility model provides a fall arrest device for a horizontal guide rail of a power transmission tower, including a rigid guide rail 1, one side of which is connected to the outer wall of the tower via a positioning frame 2; and a fall arrestor 3, which includes a fall arrestor shell 31, both ends of which are connected to an adjusting shell 33 via a first threaded rod 38. The fall arrestor shell 31 and the adjusting shell 33 are wrapped around the side of the rigid guide rail 1 away from the positioning frame 2. A fall arrestor hook 32 is rotatably provided inside the fall arrestor shell 31, a first guide wheel 34 is rotatably provided inside the fall arrestor shell 31, and a second guide wheel 35 is rotatably provided inside the fall arrestor hook 32. The first guide wheel 34 and the second guide wheel 35 rotatably abut against the outer wall of the rigid guide rail 1. Through the flexible adjustment of the fall arrestor shell 31 and the adjusting shell 33, the device can be adapted to use rigid guide rails 1 of different widths by adjusting the fit of the fall arrestor shell 31 and the adjusting shell 33.

[0018] Furthermore, the rigid guide rail 1 has an I-shaped structure, and the outer wall of one end of the rigid guide rail 1 located in the fall arrester 3 is uniformly coated with a wear-resistant coating. The wear-resistant coating is either a nano-composite coating or an amorphous coating. By setting the wear-resistant coating, the wear resistance of the extrusion side of the rigid guide rail 1 is improved, avoiding large frictional losses during fall arrester use, thereby improving the service life and safety of the device.

[0019] Furthermore, the cross-section of the adjusting shell 33 is L-shaped, and the adjusting shell 33 is symmetrically distributed on both sides of the fall arrest shell 31. The side of the adjusting shell 33 that is not installed with the second guide wheel 35 is connected to the compression assembly 4. The first guide wheel 34 and the second guide wheel 35 protrude into the interior of the fall arrest shell 31 or the adjusting shell 33, and the tangential positions of the first guide wheel 34 and the second guide wheel 35 abut against the outer wall of the rigid guide rail 1. Through the arrangement of the first guide wheel 34 and the second guide wheel 35, the flexibility of the fall arrester 3 in vertical displacement is improved through their rolling contact.

[0020] Furthermore, the adjusting shell 33 is provided with a rotating groove 36, and a first threaded rod 38 is rotatably connected inside the rotating groove 36. The fall arrestor shell 31 is provided with threaded holes on both sides that are adapted to the first threaded rod 38. The fall arrestor hook 32 is provided with positioning holes 37 symmetrically on the upper and lower sides of the first threaded rod 38, and a first guide rod 39 is fixedly connected inside the positioning hole 37. The first guide rod 39 is slidably inserted into the inside of the fall arrestor shell 31. By controlling the rotation of the first threaded rod 38, the distance between the fall arrestor shell 31 and the adjusting shell 33 can be flexibly adjusted, so that the structure can be effectively adapted to rigid guide rails 1 of different widths for fall arrest, thereby improving the adaptability of the fall arrestor 3 installation.

[0021] Furthermore, the extrusion assembly 4 includes a second threaded rod 41, which is threadedly connected to the adjusting shell 33. The second threaded rod 41 is rotatably connected to a rubber plate 42, and a second guide rod 43 is fixedly connected to one side of the rubber plate 42. The second threaded rod 41 and the second guide rod 43 are on the same side of the rubber plate 42, and the second guide rod 43 slides through to the outside of the adjusting shell 33. A rubber pad is provided on the side of the rubber plate 42 away from the rubber plate 42. The rotation of the second threaded rod 41 can drive the rubber plate 42 to move, thereby increasing the friction between the fall arrestor 3 and the rigid guide rail 1 through the contact between the rubber plate 42 and the outer wall of the rigid guide rail 1, and preventing the fall arrestor 3 from slipping during fall arrest. The rubber plate 42 is made of a composite of a metal layer and a rubber layer, and the rubber layer makes damping contact with the rigid guide rail 1.

[0022] Working principle: First, the fall arrest rope and fall arrest hook 32 are connected to each other. When a construction worker falls accidentally, the fall arrest rope pulls the fall arrest hook 32 downward. The rotation of the fall arrest hook 32 causes the other end of the fall arrest hook 32 to abut against the surface of the rigid guide rail 1. Then, through compression and positioning, the fall arrest is completed, improving the safety of high-altitude operations. The adjustable structure of the fall arrest shell 31 and the adjusting shell 33 allows the device to be effectively adapted to the width of the rigid guide rail 1 for stable installation. At the same time, by rotating the second threaded rod 41, the rubber plate 42 slightly abuts against the outer wall of the rigid guide rail 1, which allows the fall arrestor 3 to be adjusted for damping sliding on the outside of the rigid guide rail 1, making it convenient for operators to climb up.

[0023] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A fall protection device for the horizontal guide rail of a power transmission tower, characterized in that: Includes a rigid guide rail (1), one side of which is connected to the outer wall of the tower via a positioning frame (2); The fall arrester (3) includes a fall arrester shell (31), and both ends of the fall arrester shell (31) are connected to an adjustment shell (33) through a first threaded rod (38). The fall arrester shell (31) and the adjustment shell (33) are wrapped around the side of the rigid guide rail (1) away from the positioning frame (2). The fall arrester shell (31) is rotatably provided with a fall arrester hook (32). The fall arrester shell (31) is rotatably provided with a first guide wheel (34). The fall arrester hook (32) is rotatably provided with a second guide wheel (35). The first guide wheel (34) and the second guide wheel (35) rotatably abut against the outer wall of the rigid guide rail (1).

2. The anti-fall device for the horizontal guide rail of a power transmission tower according to claim 1, characterized in that: The rigid guide rail (1) has an I-shaped structure, and the outer wall of the rigid guide rail (1) located at one end of the fall arrester (3) is uniformly coated with a wear-resistant coating, which is either a nano-composite coating or an amorphous coating.

3. The anti-fall device for the horizontal guide rail of a power transmission tower according to claim 1, characterized in that: The cross-section of the adjustment shell (33) is L-shaped, and the adjustment shell (33) is symmetrically distributed on both sides of the fall protection shell (31). The side of the adjustment shell (33) that is not installed with the second guide wheel (35) is connected to the compression assembly (4).

4. The anti-fall device for the horizontal guide rail of a power transmission tower according to claim 3, characterized in that: The first guide wheel (34) and the second guide wheel (35) protrude into the interior of the fall arrestor shell (31) or the adjustment shell (33), and the tangential positions of the first guide wheel (34) and the second guide wheel (35) abut against the outer wall of the rigid guide rail (1).

5. The anti-fall device for the horizontal guide rail of a power transmission tower according to claim 1, characterized in that: The adjusting shell (33) is provided with a rotating groove (36), and a first threaded rod (38) is rotatably connected inside the rotating groove (36). The fall protection shell (31) is provided with threaded holes on both sides that are adapted to the first threaded rod (38). The fall protection hook (32) is provided with positioning holes (37) symmetrically on the upper and lower sides of the first threaded rod (38). A first guide rod (39) is fixedly connected inside the positioning hole (37), and the first guide rod (39) is slidably inserted into the inside of the fall protection shell (31).

6. The anti-fall device for the horizontal guide rail of a power transmission tower according to claim 3, characterized in that: The extrusion assembly (4) includes a second threaded rod (41), and the second threaded rod (41) is threadedly connected to the adjusting shell (33). The second threaded rod (41) is rotatably connected to a rubber plate (42), and a second guide rod (43) is fixedly connected to one side of the rubber plate (42).

7. A fall prevention device for a horizontal guide rail of a power transmission tower according to claim 6, characterized in that: The second threaded rod (41) and the second guide rod (43) are located on the same side of the rubber plate (42), and the second guide rod (43) slides through to the outside of the adjusting shell (33). A rubber pad is provided on the side of the rubber plate (42) away from the rubber plate (42).

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