Anti-falling centipede ladder

Abstract

The utility model belongs to the technical field of railway operation tools, and discloses an anti-falling centipede ladder which comprises a centipede ladder body and a hook fixedly arranged on the centipede ladder body, a hanging ring is fixedly arranged on the centipede ladder body, a hanging part is arranged on the hook, and a secondary protection rope is connected between the hanging ring and the hanging part. A safety buckle assembly used for sealing an opening of the hook is hinged to the hook. The device is light in weight, high in strength, convenient to carry, high in safety performance and suitable for maintenance and repair operation of electrified railways.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway operation tools, and relates to a centipede ladder, specifically a fall-prevention centipede ladder. Background Technology

[0002] Existing centipede ladders consist of two parts: a hook and a ladder. The hook is inserted into the ladder and secured with a quick-release pin. During construction, the hook is hung on a conveyor line, and workers climb the ladder to the top. A safety rope is attached to the ladder to prevent falls. However, in actual use, as workers climb, the ladder experiences downward and tilting forces due to their movements, causing it to sway. Since the hook and ladder are separate components, the connection point is a weak point in the structure. Over time, this connection can break, causing the hook to separate from the ladder, resulting in a fall and a safety accident. Regardless of the connection structure used, prolonged use will lead to loosening of the connection, posing a significant safety hazard. Furthermore, existing centipede ladders are made of iron or aluminum alloy. Iron is heavy and difficult to transport, while aluminum alloy is prone to deformation. Deformation can cause misalignment of the connection point, making repair difficult and even if repaired, it can compromise strength, creating another safety hazard. Utility Model Content

[0003] To address the aforementioned shortcomings in the existing technology, this utility model aims to provide a fall-prevention centipede ladder, thereby increasing secondary protection, eliminating safety hazards, and providing ease of use.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A fall-prevention centipede ladder includes a centipede ladder body and a hook fixed to the centipede ladder body. The centipede ladder body is fixed with a hanging ring, and the hook is provided with a hooking part. A secondary protective rope is connected between the hanging ring and the hooking part. A safety buckle assembly for closing the hook opening is hinged to the hook.

[0006] As a limitation of this utility model, the centipede ladder body is made of carbon fiber or aluminum alloy. As a further limitation of this utility model, the centipede ladder body includes a first ladder section and several second ladder sections. The first ladder section is fixedly connected to a hook. The first ladder section and the second ladder sections, as well as the second ladder sections, are connected by quick-release pins or hinges. Steps are folded onto both the first ladder section and the second ladder section.

[0007] As a further limitation of this utility model, the first ladder has two steps arranged side by side, the two uppermost steps of the second ladder connected to the first ladder are arranged side by side, and the remaining steps are arranged alternately.

[0008] As a further limitation of this utility model, the distance between the two steps arranged side by side on the first ladder and the top of the hook is 70-110cm, and the distance between the two steps arranged side by side on the second ladder and the two steps arranged side by side on the first ladder is 15-20cm.

[0009] As another limitation of this utility model, the cross-section of the ladder step is T-shaped, the side for standing is provided with anti-slip protrusions, and the ladder step is provided with reinforcing ribs.

[0010] As a limitation of this utility model, the safety buckle assembly includes a V-shaped buckle that is hinged to the hook, with one side in contact with the free end of the hook and a pull rope fixed on the other side.

[0011] As a third limitation of this utility model, the bent part of the hook is provided with an anti-slip buckle plate, which has a V-shaped structure and the two sides of the anti-slip buckle plate are fixedly connected to the inner side of the hook.

[0012] As a limitation of this utility model, the hanging part is a hole formed after the anti-slip buckle plate and the hook are connected.

[0013] As a fourth limitation of this utility model, the secondary protective rope is a steel wire rope or a chain.

[0014] By adopting the above-mentioned technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:

[0015] (1) This utility model sets up a secondary protection structure between the hook and the centipede ladder body. Even if the connection between the hook and the centipede ladder body is loose, the two are connected by steel wire rope or chain, and the centipede ladder body will not fall. No matter what causes the construction personnel to be separated from the ladder, as long as the ladder does not fall, the construction personnel will not fall due to the protection of the safety rope, thus eliminating the safety hazard and greatly improving safety. At the same time, the centipede ladder body is made of carbon fiber, which has the characteristics of high strength, light weight and corrosion resistance, making the entire centipede ladder body both lightweight and sturdy and durable, convenient to carry and transport, and especially suitable for operation scenarios that require frequent movement.

[0016] (2) The side-by-side ladder steps of this utility model enable construction workers to stand on both feet, alleviating fatigue and balance problems caused by staggered standing. Furthermore, the two side-by-side ladder steps can accommodate construction workers of different heights, reducing the burden on their legs, greatly improving the comfort and stability of use, and increasing work efficiency.

[0017] (3) The T-shaped ladder step of this utility model can reduce the overall weight, and the anti-slip protrusion can effectively increase the friction between the foot and the ladder step. Even in harsh environments such as wet and slippery conditions, it can effectively prevent construction workers from slipping and improve the safety of use.

[0018] (4) The buckle of this utility model closes the opening of the hook, so that the hook connection part forms a closed loop, effectively preventing the hook from coming off, improving the safety of the centipede ladder in the suspended state, and avoiding the occurrence of falling accidents.

[0019] (5) The anti-slip buckle of this utility model can increase the contact area between the hook and the hanging point, prevent misalignment after connection, and further improve the stability and safety of use.

[0020] In summary, this utility model is lightweight, high-strength, easy to handle, and has high safety performance, making it suitable for maintenance and emergency repair operations on electrified railways. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0023] Figure 2 for Figure 1 A magnified structural diagram of part A;

[0024] Figure 3 This is a top view of the connection between the ladder steps and the folding structure in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the main structure of the first ladder in an embodiment of this utility model;

[0026] Figure 5 This is a schematic view of the main structure of the second sub-staircase connected to the first sub-staircase in an embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the main structure of the second sub-ladder that is not connected to the first sub-ladder in an embodiment of this utility model.

[0028] In the diagram: 1. Hook; 2. Buckle; 3. Pull rope; 4. Anti-slip buckle plate; 5. Hanging hole; 6. First ladder; 7. Second ladder; 8. Quick release pin; 9. Hanging ring; 10. Steel wire rope; 11. Ladder step; 12. Reinforcing rib; 13. Anti-slip protrusion; 14. Locking end; 15. Fixing ring; 16. Support arm. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0030] Example 1: A fall-prevention centipede ladder

[0031] like Figure 1 As shown, it includes the centipede ladder body and the hook 1 fixed on the centipede ladder body. When in use, the hook 1 is attached to the power supply line, and the construction workers climb to the top of the centipede ladder body to work.

[0032] like Figure 2 As shown, a safety fastener assembly for closing the opening of hook 1 is hinged to hook 1. The safety fastener assembly includes a buckle 2, which has a V-shaped structure and is hinged to hook 1 at the bend. An elastic element is provided at the hinge point so that one end can contact the free end of hook 1 in its natural state. This free end refers to... Figure 2 At the right end of the hook 2, which is suspended in the air, a pull rope 3 is fixed to the other side of the buckle 2. The pull rope 3 extends to the ground. When removing the hook 1, pull the pull rope 3 to rotate the buckle 2 around the hinge point, separating the buckle 2 from the free end of the hook 1, thus removing the hook 1. In this embodiment, the elastic element is a torsion spring. One torsion arm of the torsion spring abuts against the hook 1, and the other torsion arm abuts against the end of the buckle 2 that contacts the free end of the hook 1.

[0033] The bent part of the hook 1 is fixed with an anti-slip buckle plate 4. The anti-slip buckle plate 4 has a V-shaped structure and is fixed upside down on the inside of the bent part of the hook 1, so that the two sides of the anti-slip buckle plate 4 are fixedly connected to the inside of the hook 1. Since the anti-slip buckle plate 4 is V-shaped, after the anti-slip buckle plate 4 is fixed, the two sides of the anti-slip buckle plate 4 and the hook 1 form a hanging hole 5, which is the hanging part.

[0034] like Figure 1 As shown, the centipede ladder body is made of carbon fiber or aluminum alloy, which is lightweight and high-strength. The centipede ladder body includes a first ladder section 6 and several second ladder sections 7. In this embodiment, there are two second ladder sections 7. The first ladder section 6 is located at the top. Hooks 1 are inserted into the first ladder section 6 and connected to the hooks 1 by bolts. After connection, they are fixed by adhesive. The first ladder section 6 and the second ladder sections 7, as well as the second ladder sections 7 themselves, are connected by quick-release pins 8 or hinges. When quick-release pins 8 are used, the connection between the first ladder section 6 and the second ladder sections 7, and between the second ladder sections 7 themselves, is a plug-in connection structure. Fixing is achieved through quick-release pins 8, allowing the centipede ladder body to be disassembled into a separate part. The quick-release pins 8 utilize existing technology; pressing the head allows the stainless steel ball at its end to pop out or retract, enabling quick installation and disassembly. When hinges are used, the first ladder section 6 and the second ladder sections 7 can fold together to prevent loss. This embodiment uses quick-release pins 8 for connection.

[0035] A hanging ring 9 is fixed to one end of the first ladder 6 that is connected to the hook 1. A secondary protective rope is provided on the hanging ring 9. The secondary protective rope is a steel wire rope 10 or a chain. In this embodiment, a steel wire rope 10 is used. The steel wire rope 10 passes through the hook hole 5 formed between the anti-slip buckle plate 4 and the hook 1, so that a secondary protection structure is added between the hook 1 and the first ladder 6. Even if the first ladder 6 is detached from the hook 1, the first ladder 6 will not fall because of the connection of the steel wire rope 10. The safety rope of the construction worker hanging on the first ladder 6 will also not fall.

[0036] Both the first ladder 6 and the second ladder 7 have folded steps 11 on their ladder bars. The steps 11 have a T-shaped cross-section and are reinforced with ribs 12 on both sides to increase strength while reducing weight and saving manufacturing costs. The side of the steps 11 used for standing has anti-slip protrusions 13 to increase friction. The end of the steps 11 that connects to the ladder bars has a hinge hole and a locking end 14.

[0037] like Figure 3 As shown, the folding structure includes a fixing ring 15 sleeved on the ladder rod and support arms 16 integrally formed with the fixing ring 15. The fixing ring 15 is fixed to the ladder rod by bolts and has an opening. Two support arms 16 are provided, respectively fixed on both sides of the opening of the fixing ring 15. The ladder step is hinged to the middle of the two support arms 16 by a pin. When the ladder step is rotated to a position perpendicular to the ladder rod, the locking end 14 of the ladder step abuts against the ladder rod, forming a locked state, which keeps the ladder step perpendicular to the ladder rod for construction workers to climb. The position where the locking end 14 of the ladder step abuts against the ladder rod is arc-shaped, which increases the contact area with the ladder rod and improves the stability of the lock. When the ladder steps 11 are arranged side by side, support arms 16 are respectively provided on both sides of the fixing ring 15.

[0038] like Figure 4 As shown, the first ladder 6 has two rungs 11 arranged side by side, and the distance between the two rungs 11 and the top of the hook 1 is 70-110cm. This distance ensures that construction workers are above the power line, facilitating operation. When construction workers climb to the top, they can stand on both rungs 11, increasing the stability of their operation and improving safety. Figure 5 As shown, to accommodate workers of varying heights, the two uppermost steps 11 of the second ladder 7, connected to the first ladder 6, are arranged side-by-side. The distance between the two steps 11 on the second ladder 7 and the two steps 11 on the first ladder 6 is 15-20 cm. If a worker is taller, they stand on the lower two steps 11; if a worker is shorter, they stand on the upper two steps 11. Figure 6 As shown, the remaining steps 11 are staggered to facilitate climbing.

[0039] When using this embodiment, the first ladder 6 and the second ladder 7 are assembled, and the hook 1 is hung on the power transmission line under construction. The construction workers climb to the top by stepping on the ladder rungs 11, and work on the two ladder rungs 11 set side by side on the first ladder 6. After the construction is completed, the construction workers stand on the ground and pull the rope 3 to separate one end of the buckle 2 from the free end of the hook 1, remove the centipede ladder, disassemble each section of the ladder, and fold and store the ladder rungs 11.

[0040] It should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fall-prevention centipede ladder, comprising a centipede ladder body and hooks fixed to the centipede ladder body, characterized in that: The centipede ladder body is fixed with a hanging ring, and the hook is provided with a hooking part. A secondary protective rope is connected between the hanging ring and the hooking part. A safety buckle assembly for closing the hook opening is hinged to the hook.

2. The anti-fall centipede ladder according to claim 1, characterized in that: The centipede ladder body is made of carbon fiber or aluminum alloy.

3. The anti-fall centipede ladder according to claim 2, characterized in that: The centipede ladder body includes a first ladder section and several second ladder sections. The first ladder section is fixedly connected to a hook. The first ladder section and the second ladder section, as well as the second ladder section and the second ladder section, are connected by quick-release pins or hinges. The first ladder section and the second ladder section are both equipped with folded steps.

4. The anti-fall centipede ladder according to claim 3, characterized in that: The first step of the ladder has two steps arranged side by side, and the two steps at the top of the second step connected to the first step are arranged side by side, while the remaining steps are arranged alternately.

5. The anti-fall centipede ladder according to claim 4, characterized in that: The distance between the two steps arranged side by side on the first ladder and the top of the hook is 70-110cm, and the distance between the two steps arranged side by side on the second ladder and the two steps arranged side by side on the first ladder is 15-20cm.

6. A fall-prevention centipede ladder according to any one of claims 3-5, characterized in that: The stair treads have a T-shaped cross-section, with anti-slip protrusions on the standing side and reinforcing ribs.

7. The anti-fall centipede ladder according to claim 6, characterized in that: The safety buckle assembly includes a V-shaped buckle that is hinged to the hook, with one side in contact with the free end of the hook and a pull rope fixed on the other side.

8. A fall-prevention centipede ladder according to any one of claims 1-5 and 7, characterized in that: The bent part of the hook is fixedly provided with an anti-slip buckle plate, which has a V-shaped structure and is fixedly connected to the inside of the hook on both sides.

9. A fall-prevention centipede ladder according to claim 8, characterized in that: The hooking part is the hole formed after the anti-slip buckle plate and the hook are connected.

10. A fall-prevention centipede ladder according to any one of claims 1-5, 7, and 9, characterized in that: The secondary protective rope is a steel wire rope or a chain.

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