Cage type crawling ladder

By installing guardrails and a third fixed column structure on the ladder, the problem of the lack of protection in existing ladders in emergency situations is solved, enabling rapid interception and protection of workers falling and ensuring worker safety.

CN224214113UActive Publication Date: 2026-05-08TIANJIN TONGLI YUANHANG MACHINERY EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN TONGLI YUANHANG MACHINERY EQUIPMENT CO LTD
Filing Date
2025-05-06
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing ladders lack effective protective measures in emergency situations such as workers becoming exhausted, suffering sudden illness, or slipping, which may lead to workers falling and posing a serious risk of injury.

Method used

A cage-type climbing ladder was designed. By setting up a stop bar and a third fixing post on the ladder, when the worker climbs up, the third fixing post triggers the stop bar to flip and fix it. In an emergency, the stop bar can prevent the worker from falling and prevent injury.

Benefits of technology

Effectively prevents workers from falling in emergency situations, ensuring their safety and providing rapid hoisting protection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of building construction, in particular to a cage type crawling ladder which comprises a crawling ladder body. Two fences are arranged at the right end of the ladder stand, connecting fences are fixedly connected to the right ends of the two fences, a first connecting plate is fixedly connected to the right ends of the connecting fences jointly, a plurality of first grooves are formed in the first connecting plate, the barrier strips are hinged to the first grooves, the upper ends of the barrier strips are in an inward concave shape, and the lower ends of the barrier strips are in an inward concave shape; and the right end of the barrier strip is fixedly connected with a U-shaped connecting plate. According to the cage type ladder stand, the barrier strip, the third fixing column and other structures are arranged, when a worker climbs upwards, the third fixing column moves upwards along with the worker and triggers the barrier strip to turn over, the barrier strip abuts against the first connecting plate through the supporting structure to be fixed, and when the worker falls downwards in an emergency, the third fixing column can rapidly fall downwards, so that the safety of the worker is improved. And the baffle strips of the corresponding floors can intercept the workers, so that the workers can be quickly hung, the workers are effectively prevented from falling down and being hurt, and the life safety of the workers is guaranteed.
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Description

Technical Field

[0001] This utility model belongs to the field of building construction, and specifically relates to a cage-type climbing ladder. Background Technology

[0002] Cage ladders belong to the fields of construction, high-altitude operations and safety protection equipment. They are widely used in buildings, bridges, tunnels, industrial plants, municipal engineering and other scenarios to provide a safe and stable passage for workers at heights, while also having fall protection functions.

[0003] In existing ladder technology, if a worker falls due to exhaustion, sudden illness, or other emergencies while climbing, there is a lack of effective protective measures. The worker may fall directly to the ground, causing serious injury or even endangering their life.

[0004] Therefore, existing ladders lack a simple safety protection structure for workers and do not have a timely protection plan for unexpected work during use. Utility Model Content

[0005] To overcome the lack of a simple safety protection structure for workers in existing ladders, a cage-type ladder is proposed.

[0006] The technical solution of this utility model is as follows: a cage-type climbing ladder, including a ladder; it also includes a stop strip and a first fixed post. Two guardrails are provided on the right end of the ladder. A connecting rail is fixed to the right end of the two guardrails. A first connecting plate is fixed to the right end of the connecting rail. Multiple first grooves are provided on the first connecting plate. A stop strip is hinged to the first groove. The upper end of the stop strip is concave. A U-shaped connecting plate is fixed to the right end of the stop strip. Pressure blocks are provided at the front and rear ends of the U-shaped connecting plate. A first fixed post is slidably provided on the first connecting plate. A stop block is fixed to the outer wall of the first fixed post. A third fixed post is provided on the stop strip. A hinge frame is fixed to the lower end of the inner wall of the first groove.

[0007] Preferably, two connecting discs are fixedly connected to the upper and lower parts of the left end of the first connecting plate, and a second fixing post is fixedly connected to the end of the two flush connecting discs that are close to each other.

[0008] Preferably, a limiting ring is slidably provided on the outer wall of the second fixed column, and the ends of the two limiting rings that are close to each other are fixedly connected to the third fixed column.

[0009] Preferably, two ear plates are fixed to the right end of the first connecting plate, and the first fixing post slides on the ear plates.

[0010] Preferably, the upper end of the pressing block has multiple second grooves.

[0011] Preferably, a connecting ring is fixed to the outer wall of the third fixing column, and the third fixing column, the connecting ring, the connecting plate and the second fixing column are all made of stainless steel.

[0012] Preferably, the lower end of the stop bar is fixedly connected to a limiting leg, and the right end of the limiting leg and the left end of the first connecting plate are in contact with each other.

[0013] The beneficial effects of this utility model are as follows: This cage ladder, by setting up a stop bar and a third fixed column, allows the third fixed column to move upward with the worker and trigger the stop bar to flip when the worker climbs upward. The stop bar is fixed by the support structure against the first connecting plate. When the worker falls downward in an emergency, the third fixed column will fall rapidly downward, and the stop bar of the corresponding floor can intercept it, thereby quickly suspending the worker and effectively preventing the worker from falling and getting injured, thus ensuring the worker's life safety. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0015] Figure 2 The diagram shown is a three-dimensional structural schematic of the first fixing column of this utility model;

[0016] Figure 3 The diagram shown is a three-dimensional structural schematic of the overall guardrail of this utility model;

[0017] Figure 4 The diagram shown is a three-dimensional structural schematic of the protective strip of this utility model.

[0018] Figure 5 The diagram shown is a three-dimensional structural schematic of the third fixing column of this utility model.

[0019] The labels in the attached diagram are as follows: 1. Ladder; 2. Guardrail; 3. Connecting rail; 4. First connecting plate; 5. First groove; 6. Ear plate; 7. First fixing post; 8. Stop block; 9. Connecting plate; 10. Second fixing post; 11. Limiting ring; 12. Third fixing post; 13. Connecting ring; 14. Hinge frame; 15. Stop bar; 16. Limiting leg; 17. U-shaped connecting plate; 18. Pressure block; 19. Second groove. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-5This utility model provides an embodiment: a cage-type climbing ladder, including a ladder 1; it also includes a stop strip 15 and a first fixing post 7. Two guardrails 2 are provided at the right end of the ladder 1, and connecting rails 3 are fixedly connected to the right ends of the two guardrails 2. A first connecting plate 4 is fixedly connected to the right ends of the connecting rails 3. Multiple first grooves 5 are provided on the first connecting plate 4, and a stop strip 15 is hinged to the first groove 5. The upper end of the stop strip 15 is concave, and a U-shaped connecting plate 17 is fixedly connected to the right end of the stop strip 15. Pressure blocks 18 are provided at both the front and rear ends of the U-shaped connecting plate 17. A first fixing post 7 is slidably mounted on the first connecting plate 4, and a stop block 8 is fixedly connected to the outer wall of the first fixing post 7. A third fixing post 12 is provided on the stop strip 15. A hinge frame 14 is fixedly connected to the lower end of the inner wall of the first groove 5. When a worker climbs... When the ladder is in operation, the connecting device is connected to the third fixed column 12. When the worker climbs up, the third fixed column 12 moves from bottom to top. The stop bar 15 is hinged to the hinge frame 14. The third fixed column 12 flips the stop bar 15 upward. The stop bar 15 rests on the first connecting plate 4 through the support structure to prevent the stop bar 15 from flipping downward. In case of emergency, the third fixed column 12 falls rapidly downward. The stop bar 15 of the corresponding floor intercepts the third fixed column 12, thereby quickly suspending the worker and preventing fall injury. When working downstairs normally, the first fixed column 7 is moved to rotate the stop block 8 and press it onto the pressure block 18, thereby flipping and fixing multiple stop bars 15 upward so that the stop bars 15 do not obstruct the third fixed column 12.

[0022] Please see Figures 1-3 In this embodiment, two connecting discs 9 are fixedly connected to the upper and lower parts of the left end of the first connecting plate 4. A second fixing post 10 is fixedly connected to the upper and lower flush connecting discs 9 at their close ends. A limiting ring 11 is slidably provided on the outer wall of the second fixing post 10. The two limiting rings 11 are fixedly connected to the third fixing post 12 at their close ends. The limiting rings 11 are limited by the second fixing post 10, thereby limiting the position of the third fixing post 12 to be directly above the stop bar 15. Two ear plates 6 are fixedly connected to the right end of the first connecting plate 4. A first fixing post 7 slides on the ear plates 6.

[0023] Please see Figures 3-5 In this embodiment, the upper end of the pressure block 18 is provided with a plurality of second grooves 19, which increase the friction between the stop block 8 and the pressure block 18. The outer wall of the third fixing post 12 is fixedly connected with a connecting ring 13. The third fixing post 12, the connecting ring 13, the connecting plate 9 and the second fixing post 10 are all made of stainless steel to improve the overall strength. The lower end of the stop bar 15 is fixedly connected with a limiting leg 16. The right end of the limiting leg 16 and the left end of the first connecting plate 4 are in contact with each other. The limiting leg 16 can support the first connecting plate 4, so that the stop bar 15 is perpendicular to the first connecting plate 4 when working.

[0024] When a worker climbs the ladder, their safety device is first connected to the connecting ring 13 on the third fixed post 12 via a rope. The worker then climbs the ladder 1. The third fixed post 12 is limited by two inner second fixed posts 10 and moves upwards in a straight line. As the third fixed post 12 moves upwards with the worker, it touches the lower end of the stop bar 15, causing the stop bar 15 to flip upwards around the hinge frame 14. The third fixed post 12 then moves above the stop bar 15 at the corresponding floor height. The lower stop bar 15 then abuts against the first connecting plate 4 via the limiting support leg 16. This allows the stop bar 15 to be fixed at a perpendicular angle to the first connecting plate 4. When a worker falls due to fatigue or other emergencies, the third fixing column 12 moves downward and is hooked by the stop bar 15, thus stopping the worker's fall and protecting their life. When the worker needs to go down the stairs, the first fixing column 7 is rotated first, and then the stop block 8 on the first fixing column 7 is pressed against the pressure block 18, thereby flipping and lifting the stop bar 15 along the hinge frame 14. In this way, when the worker goes downstairs, the third fixing column 12 can slide smoothly on the second fixing column 10.

Claims

1. A cage-type climbing ladder, comprising a ladder (1), characterized in that: It also includes a stop bar (15) and a first fixed post (7); the right end of the ladder (1) is provided with two guardrails (2), the right end of the two guardrails (2) is fixed with a connecting rail (3), the right end of the connecting rail (3) is fixed with a first connecting plate (4), the first connecting plate (4) is provided with multiple first grooves (5), the first groove (5) is hinged with a stop bar (15), the upper end of the stop bar (15) is concave, the right end of the stop bar (15) is fixed with a U-shaped connecting plate (17), the front and rear ends of the U-shaped connecting plate (17) are provided with pressure blocks (18), the first fixed post (7) is slidably provided on the first connecting plate (4), the outer wall of the first fixed post (7) is fixed with a stop block (8), the stop bar (15) is provided with a third fixed post (12), and the lower end of the inner wall of the first groove (5) is fixed with a hinge frame (14).

2. The cage-type climbing ladder according to claim 1, characterized in that: Two connecting plates (9) are fixedly connected to the upper and lower parts of the left end of the first connecting plate (4), and a second fixing post (10) is fixedly connected to the upper and lower two flush connecting plates (9) that are close to each other.

3. A cage-type climbing ladder according to claim 1, characterized in that: The outer wall of the second fixed column (10) is provided with a limiting ring (11), and the two limiting rings (11) are fixedly connected to the third fixed column (12) at their close ends.

4. A cage-type climbing ladder according to claim 1, characterized in that: Two ear plates (6) are fixed to the right end of the first connecting plate (4), and the first fixed post (7) slides on the ear plate (6).

5. A cage-type climbing ladder according to claim 1, characterized in that: Multiple second grooves (19) are provided at the upper end of the pressure block (18).

6. A cage-type climbing ladder according to claim 1, characterized in that: The outer wall of the third fixing column (12) is fixed with a connecting ring (13). The third fixing column (12), the connecting ring (13), the connecting plate (9) and the second fixing column (10) are all made of stainless steel.

7. A cage-type climbing ladder according to claim 1, characterized in that: The lower end of the stop bar (15) is fixedly connected to the limiting leg (16), and the right end of the limiting leg (16) and the left end of the first connecting plate (4) are in contact with each other.