A quick-installation and disassembly ladder cage for high-pier bridges

Abstract

This utility model relates to the field of ladder cage technology and discloses a quick-installation and disassembly ladder cage for high-pier bridges. It includes a base, a first platform and a second platform slidably connected to the outer wall of the base, a limit cylinder fixedly connected to the outer wall of the base, a column slidably connected to the inner wall of the limit cylinder, a safety door slidably connected to the outer wall of the base, stairs fixedly connected to the outer walls of the first and second platforms, a fixing block fixedly connected to the outer wall of the second platform, a cylinder fixedly connected to the outer wall of the fixing block, a rack fixedly connected to the output end of the cylinder, gears meshing with the teeth of the rack, a limit block slidably connected to the outer wall of the rack, and a support plate fixedly connected to the outer wall of the limit block. In this utility model, the combination of the cylinder, rack, and limit block frees up hands and improves personnel throughput; the safety door is locked via a switch assembly to prevent unauthorized personnel from entering, thus enhancing safety.

Description

Technical Field

[0001] This utility model relates to the field of ladder cage technology, and in particular to a ladder cage that can be quickly installed and disassembled for high pier bridges. Background Technology

[0002] A ladder cage is a safety protection device used in building construction and high-altitude operations. It is mainly used to provide enclosed or semi-enclosed access routes to ensure personnel safety. It consists of components such as a frame, stairs, handrails, safety doors, and protective netting, and is widely used in underground space construction, bridge construction, and high-altitude operations.

[0003] However, most existing safety doors for ladder cages use a single anti-opening mechanism. Traditional manually operated safety doors require personnel to free their hands to operate them. When construction workers are carrying tools, the opening process is cumbersome and the lock may fail due to improper operation, posing a safety hazard. Some safety doors lack a reliable mechanical locking structure, allowing unauthorized personnel to enter at will, increasing the risk of falls from heights. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a ladder cage that can be quickly installed and disassembled for high pier bridges, aiming to improve the problems of inconvenient operation and poor adaptability to different scenarios.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-installation and disassembly ladder cage for high-pier bridges, comprising a base, a first platform and a second platform slidably connected to the outer wall of the base, a limit cylinder fixedly connected to the outer wall of the base, a column slidably connected to the inner wall of the limit cylinder, a safety door slidably connected to the outer wall of the base, a staircase fixedly connected to the outer walls of the first and second platforms, a fixing block fixedly connected to the outer wall of the second platform, a cylinder fixedly connected to the outer wall of the fixing block, a rack fixedly connected to the output end of the cylinder, a gear meshing with the tooth end of the rack, a limit block slidably connected to the outer wall of the rack, a support plate fixedly connected to the outer wall of the limit block, a connecting rod slidably connected to the outer wall of the gear, a protective net provided on the outer walls of the first and second platforms, a buckle assembly provided on the inner wall of the protective net, a switch assembly provided on the outer wall of the safety door, and a fastening assembly provided on the inner wall of the base.

[0006] The above technical solution works as follows: the starting cylinder transmits power to the rack through its output end, causing the rack to slide on the inner wall of the limiting block. The limiting block limits the rack, making its sliding more stable. The rack meshes with the gear teeth, causing the gear to rotate. The gear then drives the connecting rod to slide, causing the safety door to slide and thus opening and closing. This allows workers to pass quickly even when they are holding tools, freeing their hands, replacing cumbersome operating steps, increasing the pass rate, and making it suitable for high-frequency operation scenarios.

[0007] Preferably, the fastening assembly includes a connecting column, which is slidably connected to the inner walls of the first platform, the base, and the column in sequence. The outer wall of the connecting column is slidably connected to a first locking post and a second locking post. The outer wall of the first locking post is provided with threads, and a nut is threadedly connected to the outer wall of the first locking post.

[0008] Preferably, the buckle assembly includes multiple sliders, the outer wall of the slider is slidably connected to the inner wall of the protective net, the outer wall of the slider is slidably connected to a limit post, the outer wall of the limit post is fixedly connected to a limit plate, and a spring is provided on one side of the slider.

[0009] Preferably, the switch assembly includes a locking block, which is fixedly connected to the outer wall of the safety door. A base plate is fixedly connected to the outer wall of another safety door. A flap is hinged to the inner wall of the base plate. A buckle is slidably connected to the inner wall of the base plate. A latch is slidably connected to the outer wall of the flap.

[0010] Preferably, the outer walls of the plurality of support plates are fixedly connected to the outer wall of the second platform, the outer wall of the gear is rotatably connected to the inner wall of the support plate, and the connecting rod is hinged to the outer wall of the safety door and the second platform.

[0011] Preferably, the first locking post slides and abuts against the outer wall of the second locking post, the first locking post is slidably connected to the inner wall of the base and the first platform, and the second locking post is fixedly connected to the inner wall of the first platform.

[0012] Preferably, the plurality of sliders slide and engage with the inner wall of the second platform of the first platform, the limiting post and the limiting plate are fixedly connected to the inner wall of the protective net, and the spring is sleeved on the outer wall of the limiting post.

[0013] Preferably, the buckle is slidably connected to the inner wall of the card block, the latch is fixedly connected to the outer wall of the base plate, and the outer walls of the first platform and the second platform are provided with anti-slip textures and holes.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the starting cylinder pushes the rack to slide along the inner wall of the limit block, driving the gear to rotate. The gear drives the connecting rod to slide and open the safety door, freeing up the hands and eliminating the need for manual opening and closing, thus improving the personnel passage rate. When the project is stopped and no one is working, and the safety door needs to be locked, the flip plate is moved to slide against the bottom plate and the outer wall of the lock, causing the buckle to engage with the inner wall of the locking block. This, in conjunction with the mechanical lock, realizes the opening and closing and locking of the safety door, preventing unauthorized personnel from entering and improving security.

[0016] 2. In this utility model, the base, the first platform and the column are connected by a connecting column. Then, the nut is screwed on the first locking column and tightened, which drives the first locking column to slide against the first platform and the connecting column. It cooperates with the second locking column to fix the connecting column, thereby enhancing the stability of the equipment and improving safety.

[0017] 3. Push the slider to slide on the outer wall of the limiting post and squeeze the spring, so that the spring extends and retracts on the outer wall of the limiting post and is limited by the limiting plate. Then, it is quickly positioned by the slots on the first platform and the second platform, and the slider is inserted into the slot to achieve quick installation and improve efficiency. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a ladder cage that can be quickly installed and disassembled for high-pier bridges proposed in this utility model.

[0019] Figure 2 This is a magnified view of section A of a quick-installation and disassembly ladder cage for a high-pier bridge proposed in this utility model.

[0020] Figure 3 This is an unfolded structural diagram of a ladder cage that can be quickly installed and disassembled for a high-pier bridge, as proposed in this utility model.

[0021] Figure 4 This utility model provides a frame structure diagram of a ladder cage that can be quickly installed and disassembled for high-pier bridges.

[0022] Figure 5 This utility model provides a cross-sectional view of a fastening assembly for a ladder cage that can be quickly installed and disassembled for high-pier bridges.

[0023] Figure 6 A cross-sectional view of a snap-fit ​​assembly for a ladder cage that can be quickly installed and disassembled for a high-pier bridge, as proposed in this utility model.

[0024] Figure 7 This is a detailed enlarged view of section B of a ladder cage that can be quickly installed and disassembled for a high-pier bridge, as proposed in this utility model.

[0025] Figure 8 This is a top view of a ladder cage that can be quickly installed and disassembled for a high-pier bridge, as proposed in this utility model.

[0026] Figure 9 This is a top view of a switch assembly for a quick-installation and disassembly ladder cage for a high-pier bridge, as proposed in this utility model.

[0027] Figure 10 This invention presents a partial structural diagram of a switch assembly for a quick-installation and disassembly ladder cage for high-pier bridges.

[0028] Legend:

[0029] 1. Base; 2. First platform; 3. Column; 4. Second platform; 5. Safety door; 6. Locking block; 7. Base plate; 8. Flip plate; 9. Buckle; 10. Lock; 11. First locking post; 12. Second locking post; 13. Nut; 14. Connecting post; 15. Protective net; 16. Sliding block; 17. Limiting post; 18. Limiting plate; 19. Spring; 20. Fixing block; 21. Cylinder; 22. Rack; 23. Gear; 24. Limiting block; 25. Support plate; 26. Connecting rod. Detailed Implementation

[0030] 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 embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Example 1:

[0032] Reference Figure 1 , Figure 8 , Figure 9 and Figure 10 This utility model provides an embodiment of a quick-installation and disassembly ladder cage for high-pier bridges, comprising a base 1, a first platform 2 and a second platform 4 slidably connected to the outer wall of the base 1, a limit cylinder fixedly connected to the outer wall of the base 1, a column 3 slidably connected to the inner wall of the limit cylinder, a safety door 5 slidably connected to the outer wall of the base 1, a staircase fixedly connected to the outer walls of the first platform 2 and the second platform 4, a fixing block 20 fixedly connected to the outer wall of the second platform 4, a cylinder 21 fixedly connected to the outer wall of the fixing block 20, a rack 22 fixedly connected to the output end of the cylinder 21, and the teeth of the rack 22 meshing with... The outer wall of the rack 22 is slidably connected to a limit block 24, and the outer wall of the limit block 24 is fixedly connected to a support plate 25. The outer wall of the gear 23 is slidably connected to a connecting rod 26. The outer walls of the first platform 2 and the second platform 4 are provided with a protective net 15, and the inner wall of the protective net 15 is provided with a buckle assembly. The outer wall of the safety door 5 is provided with a switch assembly, and the inner wall of the 1 is provided with a fastening assembly. The outer walls of multiple support plates 25 are fixedly connected to the outer wall of the second platform 4, the outer wall of the gear 23 is rotatably connected to the inner wall of the support plate 25, and the connecting rod 26 is hinged to the outer walls of the safety door 5 and the second platform 4.

[0033] Specifically, the ladder cage frame is quickly assembled by using the first platform 2 and the second platform 4 in conjunction with the column 3 that slides on the inner wall of the base 1. The modular design improves installation efficiency. The cylinder 21 pushes the rack 22 to slide along the inner wall of the limit block 24. The position of the limit block 24 is fixed by the support plate 25, so that the rack 22 slides smoothly. The tooth end of the rack 22 meshes with the connecting gear 23 and rotates with the rack 22. The gear 23 then drives the connecting rod 26 on the outer wall to slide, thereby driving the safety door 5 to slide. This controls the opening and closing of the safety door 5, realizing the automatic opening and closing of the safety door 5 without manual operation. It is especially suitable for construction workers to pass quickly when they are holding tools with both hands, reducing operation steps, improving passage efficiency, and adapting to the high-frequency operation scenario of high pier bridge construction.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The fastening assembly includes a connecting post 14, which is slidably connected to the inner walls of the first platform 2, the base 1, and the column 3 in sequence. The outer wall of the connecting post 14 is slidably connected to a first locking post 11 and a second locking post 12. The outer wall of the first locking post 11 is threaded and a nut 13 is threadedly connected to the outer wall of the first locking post 11. The first locking post 11 slides and abuts against the outer wall of the second locking post 12. The first locking post 11 is slidably connected to the inner walls of the base 1 and the first platform 2, and the second locking post 12 is fixedly connected to the inner wall of the first platform 2.

[0035] Specifically, the first platform 2, base 1, and column 3 are connected together by the connecting column 14 for quick assembly and initial positioning. The connecting column 14 slides on the inner wall of the second locking column 12, and then the nut 13 is screwed on the outer wall of the first locking column 11 to secure it. This causes the first locking column 11 to slide and abut against the second locking column 12, locking the connecting column 14. This replaces cumbersome parts, eliminates the need for complicated tools, and shortens installation time. When disassembling, simply twist the nut 13 in the opposite direction to release the lock, facilitating quick adjustment or replacement of parts, increasing equipment stability, reducing the risk of loosening due to vibration or external force, improving safety, and allowing for reuse, thus reducing construction costs.

[0036] Reference Figure 1 , Figure 3 , Figure 6 and Figure 7 The buckle assembly includes multiple sliders 16. The outer wall of the slider 16 is slidably connected to the inner wall of the protective net 15. The outer wall of the slider 16 is slidably connected to a limit post 17. The outer wall of the limit post 17 is fixedly connected to a limit plate 18. A spring 19 is provided on one side of the slider 16. The multiple sliders 16 slide and are snapped into the inner wall of the second platform 4 of the first platform 2. The limit post 17 and the limit plate 18 are fixedly connected to the inner wall of the protective net 15. The spring 19 is sleeved on the outer wall of the limit post 17.

[0037] Specifically, the slider 16 is pushed to slide against the inner wall of the protective net 15 and the outer wall of the limiting post 17, compressing the spring 19 sleeved on the limiting post 17. The spring 19 then contracts on the limiting post 17, and is quickly positioned through the slots on the first platform 2 and the second platform 4. The slider 16 is then inserted into the slot, and the slider 16 is released. The spring 19's rebound pushes the slider 16 into and engages with the inner walls of the first platform 2 and the second platform 4, achieving rapid installation of the protective net 15. For disassembly, the slider 16 is pushed to compress the spring 19, causing the slider 16 to detach from the inner walls of the first platform 2 and the second platform 4, allowing the protective net 15 to be removed. The operation is simple and quick, improving construction efficiency. The tight engagement of the slider 16 with the inner walls of the first platform 2 and the second platform 4 ensures a secure installation of the protective net 15, preventing it from falling off during construction and providing reliable safety protection for workers. Furthermore, the elasticity of the spring 19 can accommodate installation errors within a certain range, improving structural adaptability and extending the equipment's service life.

[0038] Example 2:

[0039] Reference Figures 1-3 This embodiment is based on the description of Embodiment 1. When the project is stopped and no one is working, and it is necessary to lock the safety door, this embodiment improves on this. The switch assembly includes a locking block 6, which is fixedly connected to the outer wall of the safety door 5. A base plate 7 is fixedly connected to the outer wall of another safety door 5. A flap 8 is hinged to the inner wall of the base plate 7. A buckle 9 is slidably connected to the inner wall of the base plate 7. A latch 10 is slidably connected to the outer wall of the flap 8.

[0040] Specifically, the limiting cylinder on the outer wall of the base 1 is connected to the safety door 5 via a hinge, allowing the safety door 5 to slide on the outer wall of the limiting cylinder. The flip plate 8 is moved to rotate on the inner wall of the base plate 7 and slide onto the latch 10. Simultaneously, the flip plate 8 moves away from the outer wall of the base plate 7, causing the retaining ring 9 to rotate and slide out from the inner wall of the locking block 6, thus releasing the lock and opening both safety doors 5. When closing, after the two safety doors 5 are closed, the flip plate 8 is moved to engage the retaining ring 9 within the locking block 6. Then, the flip plate 8 is moved again to close with the base plate 7 and engage the latch 10, achieving a quick locking effect. A mechanical lock can also be attached to the latch 10 to prevent unauthorized personnel from entering when no one is working, avoiding safety hazards and improving equipment safety.

[0041] Reference Figure 2 The buckle 9 is slidably connected to the inner wall of the card block 6, and the lock 10 is fixedly connected to the outer wall of the base plate 7. The outer walls of the first platform 2 and the second platform 4 are both provided with anti-slip textures and holes.

[0042] Specifically, when the flip plate 8 is moved, it slides onto the latch 10 on the outer wall of the base plate 7. This causes the buckle 9 to slide onto the inner wall of the locking block 6, achieving the locking and unlocking effect between the buckle 9 and the locking block 6. The flip plate 8 is locked by the latch 10, and the safety door 5 is locked by the mechanical lock, thereby improving the safety of the equipment. By setting anti-slip textures and holes on the outer walls of the first platform 2 and the second platform 4, the anti-slip properties of the equipment are improved by increasing friction. On the other hand, the equipment can drain water in rainy weather to prevent water accumulation on the platform and avoid workers falling during construction, thereby further improving the safety of the equipment.

[0043] Working principle: This utility model uses a starting cylinder 21 to push a rack 22 to slide on the inner wall of a limiting block 24, which in turn drives a gear 23 to rotate. The gear 23 then drives a connecting rod 26 to slide, thereby opening the safety door 5, freeing up the hands and eliminating the need for manual opening and locking, thus improving the passage rate of personnel. When the project is stopped and no one is working, and the safety door needs to be locked, the hinges fix multiple safety doors 5 to the outer wall of the base 1, allowing multiple safety doors 5 to slide on the outer wall of the base 1. By moving the flip plate 8, it slides on the outer wall of the base plate 7 and the latch 10, causing the buckle 9 to slide on the inner wall of the locking block 6. Moving the flip plate 8 opens and closes the safety door 5, and the mechanical lock can lock it to prevent unauthorized personnel from entering, thus improving security.

[0044] The base 1, the first platform 2 and the column 3 are connected together by the connecting column 14. Then, the nut 13 is threaded to the first locking column 11, so that the nut 13 is fastened to the first locking column 11, which drives the first locking column 11 to slide and abut against the first platform 2 and the connecting column 14. It cooperates with the second locking column 12 to fix the connecting column 14, increasing the stability of the equipment and thus improving safety.

[0045] After the frame is assembled, push the slider 16 to slide on the outer wall of the limiting post 17 and squeeze the spring 19, so that the spring 19 extends and retracts on the outer wall of the limiting post 17. The limiting plate 18 limits the position, and then the first platform 2 and the second platform 4 are used for quick positioning. Insert the slider 16 into the slot, and the installation effect can be achieved quickly, thereby improving efficiency.

[0046] Finally, it should be noted that the above description is only 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing 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 quickly mounted and dismounted ladder cage for high pier column bridges, comprising a base (1), characterized in that: The outer wall of the base (1) is slidably connected to a first platform (2) and a second platform (4). A limit cylinder is fixedly connected to the outer wall of the base (1). A column (3) is slidably connected to the inner wall of the limit cylinder. A safety door (5) is slidably connected to the outer wall of the base (1). A staircase is fixedly connected to the outer walls of the first platform (2) and the second platform (4). A fixing block (20) is fixedly connected to the outer wall of the second platform (4). A cylinder (21) is fixedly connected to the outer wall of the fixing block (20). A tooth is fixedly connected to the output end of the cylinder (21). The rack (22) has a gear (23) meshing with its tooth ends. A limit block (24) is slidably connected to the outer wall of the rack (22). A support plate (25) is fixedly connected to the outer wall of the limit block (24). A connecting rod (26) is slidably connected to the outer wall of the gear (23). A protective net (15) is provided on the outer wall of the first platform (2) and the second platform (4). A buckle assembly is provided on the inner wall of the protective net (15). A switch assembly is provided on the outer wall of the safety door (5). A fastening assembly is provided on the inner wall of the (1).

2. The quick-mountable and demountable ladder cage for high pier column bridge according to claim 1, characterized in that: The fastening assembly includes a connecting post (14), which is slidably connected to the inner walls of the first platform (2), the base (1) and the column (3) in sequence. The outer wall of the connecting post (14) is slidably connected to a first locking post (11) and a second locking post (12). The outer wall of the first locking post (11) is provided with threads, and a nut (13) is threadedly connected to the outer wall of the first locking post (11).

3. The quick-mountable and demountable ladder cage for high pier column bridge according to claim 1, characterized in that: The buckle assembly includes multiple sliders (16), the outer wall of the slider (16) is slidably connected to the inner wall of the protective net (15), the outer wall of the slider (16) is slidably connected to a limit post (17), the outer wall of the limit post (17) is fixedly connected to a limit plate (18), and a spring (19) is provided on one side of the slider (16).

4. The quick-mountable and demountable ladder cage for high pier column bridge according to claim 1, characterized in that: The switch assembly includes a locking block (6) which is fixedly connected to the outer wall of the safety door (5). The outer wall of another safety door (5) is fixedly connected to a base plate (7). The inner wall of the base plate (7) is hinged to a flap (8). The inner wall of the base plate (7) is slidably connected to a buckle (9). The outer wall of the flap (8) is slidably connected to a latch (10).

5. The quick-mountable and demountable ladder cage for high pier bridge according to claim 1, characterized in that: The outer walls of the multiple support plates (25) are fixedly connected to the outer wall of the second platform (4), the outer wall of the gear (23) is rotatably connected to the inner wall of the support plate (25), and the connecting rod (26) is hinged to the outer wall of the safety door (5) and the second platform (4).

6. The quickly mountable and demountable ladder cage for high pier bridge according to claim 2, characterized in that: The first locking post (11) slides and abuts against the outer wall of the second locking post (12). The first locking post (11) is slidably connected to the inner wall of the base (1) and the first platform (2). The second locking post (12) is fixedly connected to the inner wall of the first platform (2).

7. The quickly mountable and demountable ladder cage for high pier bridge according to claim 3, characterized in that: Multiple sliders (16) slide and engage with the inner wall of the second platform (4) of the first platform (2), the limiting post (17) and the limiting plate (18) are fixedly connected to the inner wall of the protective net (15), and the spring (19) is sleeved on the outer wall of the limiting post (17).

8. The quickly mountable and demountable ladder cage for high pier bridge according to claim 4, characterized in that: The buckle (9) is slidably connected to the inner wall of the card block (6), and the latch (10) is fixedly connected to the outer wall of the base plate (7). The outer walls of the first platform (2) and the second platform (4) are provided with anti-slip textures and holes.

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