Railway guard rail

Abstract

The utility model relates to the technical field of climbing safety, concretely is a guide rail anti -derailing device, be equipped with limiting mechanism on the track, the limiting mechanism includes mounting bolt, blocking screw pin and limiting screw pin, two flat washers are sleeved on the mounting bolt and slide, the anti -theft nut is threadedly connected with the position of the top end of the mounting bolt, the thick nut is threadedly connected with the position of the bottom end of the anti -theft nut on the mounting bolt, the thin nut is threadedly connected with the position of the top end of the bottom flat washer on the mounting bolt, the torsional spring is sleeved with the position of the middle of the thin nut and the bottom flat washer on the mounting bolt, the anti -falling baffle is rotatably connected with the position of the bottom end of the mounting bolt, the utility model has the advantages of: the logic that slider and pass one -way, direction self -locking and pressing unlock, can avoid the failure caused by the wear of the clamping pin, the deformation of the limiting lug, improve reliability and security.

Description

Technical Field

[0001] This utility model relates to the field of climbing safety technology, specifically a guide rail anti-derailment device. Background Technology

[0002] Workers frequently perform high-altitude operations in fields such as power transmission and transformation line towers, communication towers, and construction access facilities. As the tasks of power grid construction and renovation become increasingly demanding, the requirements for safety protection equipment are rising. Traditional access systems, lacking reliable limiting mechanisms, are highly susceptible to serious accidents if slippage occurs. Therefore, installing fall arrestors or derailment prevention devices on various guide rails (such as T-shaped, C-shaped, and I-beams) has become a necessary measure.

[0003] Existing patent application No. 200820120036.3 provides a derailment prevention device for guide rails, including a connecting seat with a latch hinged to it. The latch rotates along a fixed axis, and the connecting seat has a limiting member that limits the latch. The latch has a reset member. By adopting the above technical solution, a derailment prevention device for C-shaped guide rails is provided that prevents the fall arrestor from slipping off the C-shaped guide rail, facilitates the installation and disassembly of the fall arrestor, and has a simple structure. Although the above application has many beneficial effects, it still has the following shortcomings: because the end of the latch facing the limiting protrusion is inclined, the fall arrestor needs to push the latch to rotate through the inclined surface when it is inserted. In actual use, the contact between the fall arrestor and the inclined surface of the latch is hard friction. Especially in outdoor working environments, if the surface of the fall arrestor is covered with sand and rust, it will accelerate the wear of the inclined surface. When the inclined surface wears down to the point where its flatness decreases, the fall arrestor may not be able to push the latch to rotate smoothly, resulting in jamming and poor safety. Utility Model Content

[0004] The purpose of this invention is to provide a guide rail anti-derailment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a guide rail anti-derailment device, wherein a limiting mechanism is provided on the rail, the limiting mechanism includes a mounting bolt, a blocking pin and a limiting pin, two flat washers are slidably sleeved on the mounting bolt, an anti-theft nut is threadedly connected to the mounting bolt near the top position, a thick nut is threadedly connected to the mounting bolt corresponding to the bottom position of the anti-theft nut, a thin nut is threadedly connected to the mounting bolt corresponding to the top position of the bottom flat washer, a torsion spring is sleeved on the mounting bolt corresponding to the thin nut and the bottom flat washer at the middle position, and an anti-fall baffle is rotatably connected to the mounting bolt near the bottom position.

[0006] Preferably, the track is T-shaped, and the mounting bolt is slidably connected to the track.

[0007] Preferably, the blocking screw is fixedly connected at the bottom end of the track at the arc-shaped recess corresponding to the anti-fall plate, and the limiting screw is fixedly connected at the bottom end of the track at the position adjacent to the mounting bolt.

[0008] Preferably, the top flat washer is located between the thick nut on the mounting bolt and the top of the track, and the bottom flat washer is located at the top of the anti-fall plate on the mounting bolt.

[0009] Preferably, one bottom end of the torsion spring is fixedly connected to the anti-fall plate, and one top end of the torsion spring is fixedly connected to the side end of the track.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the slider on the guide rail can only enter in one direction. After the slider is connected to the guide rail, the limiting mechanism will prevent the slider from moving out of the guide rail from the initial entry direction, thus achieving the purpose of preventing the slider from derailing. When it is necessary to remove the slider, it is only necessary to manually press the baffle in the limiting mechanism to make it rotate, thereby making room on the guide rail and separating the slider from the guide rail. The slider and the logic of one-way entry, directional self-locking and press unlock can avoid failure caused by wear of the locking pin and deformation of the limiting protrusion, thus improving reliability and safety. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the limiting mechanism structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model, in which the T-shaped track is replaced with an I-shaped track.

[0012] In the diagram: 1. Track; 2. Limiting mechanism; 21. Mounting bolt; 22. Blocking pin; 23. Limiting pin; 24. Flat washer; 25. Anti-theft nut; 26. Thick nut; 27. Thin nut; 28. Torsion spring; 29. ​​Anti-fall plate. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1-3 The present invention provides the following technical solution: Example 1: A guide rail anti-derailment device includes a rail 1, a limiting mechanism 2 on the rail 1, the limiting mechanism 2 includes a mounting bolt 21, a blocking screw 22 and a limiting screw 23, two flat washers 24 are slidably sleeved on the mounting bolt 21, an anti-theft nut 25 is threadedly connected to the mounting bolt 21 near the top position, a thick nut 26 is threadedly connected to the mounting bolt 21 corresponding to the bottom position of the anti-theft nut 25, a thin nut 27 is threadedly connected to the mounting bolt 21 corresponding to the top position of the bottom flat washer 24, a torsion spring 28 is sleeved on the mounting bolt 21 corresponding to the thin nut 27 and the bottom flat washer 24 in the middle position, and an anti-fall baffle 29 is rotatably connected to the mounting bolt 21 near the bottom position; The track 1 is T-shaped. The mounting bolt 21 is slidably connected to the track 1. The blocking screw 22 is fixedly connected to the bottom end of the track 1 at the arc-shaped recess of the anti-fall plate 29. The limiting screw 23 is fixedly connected to the bottom end of the track 1 at the position adjacent to the mounting bolt 21. The top flat washer 24 is located between the thick nut 26 on the mounting bolt 21 and the top of the track 1. The bottom flat washer 24 is located at the top of the anti-fall plate 29 on the mounting bolt 21. One bottom end of the torsion spring 28 is fixedly connected to the anti-fall plate 29, and one top end of the torsion spring 28 is fixedly connected to the side end of the track 1. In use, the slider can be connected to the front end of the track 1. During the connection process, the operator can manually rotate the anti-fall plate 29. The anti-fall plate 29 can rotate under the support of the mounting bolt 21. The protruding part on one side of the anti-fall plate 29 will rotate towards the limit screw 23. Figure 2 When the anti-fall plate 29 rotates, it will also twist the torsion spring 28 through the support of the track 1, and then rotate the anti-fall plate 29 to the position where it abuts against the limit screw 23. At this time, the sliding space on the track 1 is opened, and the slider can be moved out of the space occupied by the anti-fall plate 29 on the track 1. At this time, the anti-fall plate 29 can be released. The anti-fall plate 29 will return to its original position under the action of the torsion spring 28. The limit screw 23 blocks the anti-fall plate 29 to prevent it from rotating excessively, thereby effectively extending the service life of the torsion spring 28. The arc-shaped concave position of the returned anti-fall plate 29 blocks the blocking screw 22. At this time, the position on the track 1 where the anti-fall plate 29 is installed will be blocked by the anti-fall plate 29, and the slider cannot accidentally disengage from the track 1, thus achieving the purpose of preventing derailment.

[0015] Example 2: Figure 3 As shown, based on Embodiment 1, the T-shaped track 1 is replaced with an I-shaped track 1, and one of the flat washers 24 is removed. At the same time, the thin nut 27 is no longer used on the I-shaped track 1, but is replaced with a clamping plate. One end of the torsion spring 28 is fixedly connected to one of the clamping plates, and the other end of the torsion spring is still fixedly connected to the anti-fall plate 29, and the operating principle is the same.

[0016] 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. A guide rail anti-derailment device, characterized in that: The system includes a track (1), on which a limiting mechanism (2) is provided. The limiting mechanism (2) includes a mounting bolt (21), a blocking pin (22), and a limiting pin (23). Two flat washers (24) are slidably fitted on the mounting bolt (21). An anti-theft nut (25) is threadedly connected to the mounting bolt (21) near the top. A thick nut (26) is threadedly connected to the mounting bolt (21) at the bottom corresponding to the anti-theft nut (25). A thin nut (27) is threadedly connected to the mounting bolt (21) at the top corresponding to the bottom flat washer (24). A torsion spring (28) is fitted on the mounting bolt (21) at the middle position corresponding to the thin nut (27) and the bottom flat washer (24). A fall arrestor plate (29) is rotatably connected to the mounting bolt (21) near the bottom.

2. The guide rail anti-derailment device according to claim 1, characterized in that: The track (1) is T-shaped, and the mounting bolt (21) is slidably connected to the track (1).

3. The guide rail anti-derailment device according to claim 1, characterized in that: The blocking screw (22) is fixedly connected to the arc-shaped recess of the anti-fall plate (29) at the bottom end of the track (1), and the limiting screw (23) is fixedly connected to the position adjacent to the mounting bolt (21) at the bottom end of the track (1).

4. A guide rail anti-derailment device according to claim 1, characterized in that: The top flat washer (24) is located between the thick nut (26) on the mounting bolt (21) and the top of the rail (1), and the bottom flat washer (24) is located at the top of the anti-fall plate (29) on the mounting bolt (21).

5. A guide rail anti-derailment device according to claim 1, characterized in that: The bottom end of the torsion spring (28) is fixedly connected to the anti-fall plate (29), and the top end of the torsion spring (28) is fixedly connected to the side end of the track (1).

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