Multifunctional road and bridge construction ladder

Abstract

The utility model discloses a kind of multi-functional road and bridge construction ladders, including construction ladder body, the construction ladder body is composed of several cage ladders, the top of the both sides of cage ladder is uniformly provided with limiting tab, the bottom of the both sides of cage ladder is provided with the limiting frame compatible with limiting tab, the front and rear of limiting frame are both provided with installation guide slot, the utility model relates to road and bridge construction ladder technical field.This multi-functional road and bridge construction ladder, by vertically erecting multiple cage ladders one by one, when the cage ladder is hung on the first layer cage ladder, the limiting frame on the cage ladder is aligned with the limiting tab of the first layer, the limiting frame is gradually sleeved on the limiting tab by installation guide slot, then the abutting limiting rod is pushed up by the force of spring, the abutting limiting rod is inserted into the limiting hole in the limiting frame, the limiting tab and the limiting frame can be fixed conveniently, so that multiple cage ladders can be erected conveniently, without twisting multiple bolts, it is more convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction ladder technology, specifically a multifunctional road and bridge construction ladder. Background Technology

[0002] In road and bridge construction projects, cage ladders serve as construction ladders on the construction site. Their main function is to facilitate the movement of construction workers up and down the bridge. At the same time, construction workers can easily carry tools and other items while using cage ladders, which can meet various safety construction needs.

[0003] The existing cage ladder is composed of multiple smaller cage ladders. These smaller cage ladders are vertically assembled layer by layer using hoisting equipment to form a climbing ladder. They are then installed and fixed with multiple bolts and fasteners. However, during the process of assembling multiple smaller cage ladders layer by layer, too many bolts need to be tightened. Furthermore, during the hoisting of the smaller cage ladders, it is difficult to quickly align the bolt holes of the lifting cage ladders with the bolt holes of the smaller cage ladders below. Tightening the bolts is too time-consuming and labor-intensive, resulting in very low installation efficiency. Moreover, after the cage ladder is assembled, there are no protective measures at the construction site, which increases the risk of falls for construction workers. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multifunctional road and bridge construction ladder, which solves the problems of difficulty in quickly aligning the screw holes of the lifting small cage ladder with the screw holes of the lower small cage ladder, excessive time and effort in tightening bolts for installation, and the lack of protective measures at the construction site after the cage ladder is erected, which leads to the risk of workers falling during construction.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional road and bridge construction ladder, comprising a ladder body composed of several cage ladders. Limiting protrusions are provided on the top of both sides of each cage ladder, and limiting frames adapted to the limiting protrusions are provided on the bottom of both sides of each cage ladder. Installation guide grooves are provided at the front and rear of each limiting frame. A docking limiting rod is slidably connected to the front and rear of the top of each limiting protrusion through openings. Limiting holes adapted to the docking limiting rods are provided at the front and rear of the top of each limiting frame. A movable plate is fixedly connected to one end of each of the two docking limiting rods. A spring is sleeved on the surface of the docking limiting rod between the limiting protrusion and the movable plate. A disassembly operating rod is fixedly connected to the bottom of the movable plate.

[0006] Preferably, the cage ladder includes a first ladder plate and a second ladder plate, one side of the limiting protrusion is fixedly connected to one side of the second ladder plate, one side of the limiting frame is fixedly connected to one side of the first ladder plate, a fixing plate is fixedly connected inside the first ladder plate and the second ladder plate, and a protective plate is fixedly connected to both sides between the first ladder plate and the second ladder plate.

[0007] Preferably, X-shaped plates are fixedly connected to the front and rear of the first and second ladder plates, and a ladder is fixedly installed between two adjacent fixed plates.

[0008] Preferably, a protective frame is slidably connected to the top of the fixed plate above through an opening, and a support plate is fixedly connected to the rear of the inner cavity of the protective frame.

[0009] Preferably, the top of the support plate is rotatably connected to a threaded rod via a bearing, one end of which passes through the upper fixed plate and extends to the outside of the upper fixed plate.

[0010] Preferably, the top of the fixing plate is provided with a threaded opening adapted to the threaded rod, and the top of the fixing plate is provided with a limiting opening adapted to the protective frame.

[0011] Beneficial effects

[0012] This utility model provides a multifunctional road and bridge construction ladder. Compared with existing technologies, it has the following advantages:

[0013] Beneficial effects:

[0014] (1) This utility model constructs multi-layer cage ladders vertically one by one. When the cage ladder is suspended on the first layer, the limiting frame on the cage ladder is aligned with the limiting protrusion on the first layer. The limiting frame is gradually fitted onto the limiting protrusion through the installation guide groove. Then, the spring force pushes the docking limiting rod to move upward, so that the docking limiting rod is inserted into the limiting hole on the limiting frame. This makes it easy to fix the limiting protrusion and the limiting frame together. As a result, it is easy to construct multi-layer cage ladders without having to tighten multiple bolts, making the operation more convenient.

[0015] (2) This utility model drives the protective frame to move upward by rotating the threaded rod. The protective frame rises on the fixed plate to provide protection, which can effectively protect the construction position of the construction ladder and protect the construction personnel.

[0016] (3) By pulling down the disassembly operating rod, the disassembly operating rod will move the two docking limit rods downward through the moving plate, so that the two docking limit rods will no longer lock the limit frame and separate the limit frame from the limit protrusion plate, which can easily disassemble the two cage ladders, making the operation more convenient and giving the construction ladder a multi-functional effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the first ladder plate, second ladder plate, fixed plate, protective plate, X-shaped plate, climbing ladder, limiting protrusion plate, limiting frame and limiting hole of this utility model;

[0019] Figure 3 This is a cross-sectional view of the cage ladder structure of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the limiting port, the second ladder plate, and the fixing plate of this utility model;

[0021] Figure 5 This is a structural diagram of the limiting protrusion, limiting frame, mounting guide groove, docking limiting rod, moving plate, spring, and disassembly operating rod of this utility model.

[0022] In the diagram: 1. Construction ladder body; 2. Cage ladder; 3. Limiting protrusion; 4. Limiting frame; 5. Installation guide groove; 6. Limiting hole; 7. Connecting limiting rod; 8. Moving plate; 9. Spring; 10. Disassembly operating rod; 11. Protective frame; 12. Support plate; 13. Threaded rod; 14. Limiting port; 21. First ladder plate; 22. Second ladder plate; 23. Fixing plate; 24. Protective plate; 25. X-shaped plate; 26. Climbing ladder. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figure 1-5 This utility model provides a technical solution: a multifunctional road and bridge construction ladder, including a construction ladder body 1, which is composed of several cage ladders 2. The top of both sides of the cage ladder 2 is provided with a limiting plate 3, and the bottom of both sides of the cage ladder 2 is provided with a limiting frame 4 adapted to the limiting plate 3. The front and rear of the limiting frame 4 are provided with an installation guide groove 5. The front and rear of the top of the limiting plate 3 are slidably connected to a docking limiting rod 7 through an opening. The front and rear of the top of the limiting frame 4 are provided with a limiting hole 6 adapted to the docking limiting rod 7. One end of the two docking limiting rods 7 is fixedly connected to a moving plate 8. A spring 9 is sleeved on the surface of the docking limiting rod 7 and located between the limiting plate 3 and the moving plate 8. The bottom of the moving plate 8 is fixedly connected to a disassembly operation rod 10.

[0025] It should be noted that when the upper cage ladder 2 needs to be disassembled, the construction personnel pull the disassembly operating rod 10 inside the lower cage ladder 2, which causes the docking limit rod 7 to move out of the limit hole 6, no longer limiting the limit frame 4 on the limit protrusion plate 3, thus making it easy to separate the two cage ladders 2.

[0026] Furthermore, to facilitate the splicing of construction ladders of different heights, the cage ladder 2 includes a first ladder plate 21 and a second ladder plate 22. One side of the limiting protrusion 3 is fixedly connected to one side of the second ladder plate 22, and one side of the limiting frame 4 is fixedly connected to one side of the first ladder plate 21. Fixing plates 23 are fixedly connected inside the first ladder plate 21 and the second ladder plate 22. Protective plates 24 are fixedly connected to both sides between the first ladder plate 21 and the second ladder plate 22. X-shaped plates 25 are fixedly connected to the front and rear of the first ladder plate 21 and the second ladder plate 22. A climbing ladder 26 is fixedly installed between two adjacent fixing plates 23. A central opening is opened at the top of the upper fixing plate 23, and a rectangular opening is opened at the top of the lower fixing plate 23.

[0027] Furthermore, in order to protect the construction site, a protective frame 11 is slidably connected to the top of the upper fixed plate 23 through an opening. A support plate 12 is fixedly connected to the rear of the inner cavity of the protective frame 11. A threaded rod 13 is rotatably connected to the top of the support plate 12 through a bearing. A handle is fixedly connected to the end of the threaded rod 13. One end of the threaded rod 13 passes through the upper fixed plate 23 and extends to the outside of the upper fixed plate 23. A threaded opening adapted to the threaded rod 13 is opened at the top of the upper fixed plate 23. A limiting opening 14 adapted to the protective frame 11 is opened at the top of the upper fixed plate 23.

[0028] In use, the first-layer cage ladder 2 is lifted and installed on the ground using a lifting device. Then, the second-layer cage ladder 2 is lifted onto the first-layer cage ladder 2, aligning the limiting frame 4 on the second-layer cage ladder 2 with the two limiting protrusions 3 on the first-layer cage ladder 2. By lifting the second-layer cage ladder 2 and gradually moving it backward, the installation guide groove 5 on the limiting frame 4 moves closer to the limiting protrusions 3. The two limiting frames 4 on the top of the second-layer cage ladder 2 are gradually fitted onto the limiting protrusions 3 on the first-layer cage ladder 2. As the limiting frames 4 are fitted onto the limiting protrusions 3 and move backward, they will compress multiple mating limiting rods. 7. The limiting frame 4 will push the docking limiting rod 7 to move downward, so that the docking limiting rod 7 will drive the moving plate 8 to move downward. When the limiting frame 4 is completely fitted on the limiting protrusion 3, the moving plate 8 will be driven to move upward by the force of the spring 9. The moving plate 8 will drive the docking limiting rod 7 to move upward into the limiting hole 6, so that the docking limiting rod 7 limits and fixes the limiting frame 4. The second layer cage ladder 2 is installed on the first layer cage ladder 2. This process is repeated to install the third layer cage ladder 2 on the second layer cage ladder 2, and the construction ladder body 1 is erected at the location of the road and bridge construction.

[0029] Construction workers climb up multiple ladders 26 to the uppermost fixed plate 23 of the construction ladder body 1. By turning the handle, they drive the threaded rod 13 to rotate, which in turn drives the protective frame 11 to move upward, so that the raised protective frame 11 surrounds the front of the fixed plate 23.

Claims

1. A multifunctional bridge construction ladder comprising a construction ladder body (1), characterized in that: The construction ladder body (1) is composed of several cage ladders (2). The top of both sides of the cage ladder (2) is provided with a limiting plate (3). The bottom of both sides of the cage ladder (2) is provided with a limiting frame (4) that matches the limiting plate (3). The front and rear of the limiting frame (4) are provided with an installation guide groove (5). The front and rear of the top of the limiting plate (3) are slidably connected with a docking limiting rod (7) through an opening. The front and rear of the top of the limiting frame (4) are provided with a limiting hole (6) that matches the docking limiting rod (7). One end of the two docking limiting rods (7) is fixedly connected to a moving plate (8). A spring (9) is sleeved on the surface of the docking limiting rod (7) and between the limiting plate (3) and the moving plate (8).

2. The multifunctional road and bridge construction ladder according to claim 1, characterized in that: The bottom of the movable plate (8) is fixedly connected to a disassembly operating lever (10).

3. The multifunctional road and bridge construction ladder according to claim 1, characterized in that: The cage ladder (2) includes a first ladder plate (21) and a second ladder plate (22). One side of the limiting protrusion (3) is fixedly connected to one side of the second ladder plate (22). One side of the limiting frame (4) is fixedly connected to one side of the first ladder plate (21). Fixing plates (23) are fixedly connected inside the first ladder plate (21) and the second ladder plate (22). Protective plates (24) are fixedly connected on both sides between the first ladder plate (21) and the second ladder plate (22).

4. A multifunctional road and bridge construction ladder according to claim 3, characterized in that: An X-shaped plate (25) is fixedly connected to the front and rear of the first ladder plate (21) and the second ladder plate (22), and a ladder (26) is fixedly installed between two adjacent fixed plates (23).

5. A multifunctional road and bridge construction ladder according to claim 4, characterized in that: A protective frame (11) is slidably connected to the top of the fixed plate (23) above by opening, and a support plate (12) is fixedly connected to the rear of the inner cavity of the protective frame (11).

6. A multifunctional road and bridge construction ladder according to claim 5, characterized in that: The top of the support plate (12) is rotatably connected to a threaded rod (13) via a bearing. One end of the threaded rod (13) passes through the upper fixed plate (23) and extends to the outside of the upper fixed plate (23).

7. A multifunctional road and bridge construction ladder according to claim 6, characterized in that: The top of the fixed plate (23) above is provided with a threaded opening that is compatible with the threaded rod (13), and the top of the fixed plate (23) above is provided with a limiting opening (14) that is compatible with the protective frame (11).

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