Novel portable steel deformation ladder

Abstract

The utility model discloses a novel portable steel deformation ladder. The novel portable steel deformation ladder comprises a support frame, a supporting structure is connected to the supporting frame, two hydraulic cylinders are symmetrically installed on each of the two sides of the supporting frame, the output ends of the four hydraulic cylinders are connected with a ground supporting structure, two connecting bases are connected to the supporting structure, a lifting structure is connected to the two connecting bases, the supporting structure comprises a plurality of steel frames, and every two adjacent steel frames are rotationally connected. When in use, the supporting frame can be moved to the side of a slope protection of a tunnel portal, then the corresponding electric push rod is started to control the steel frame to be turned over and unfolded, the steel frame can be erected on the slope protection for supporting after being unfolded, a worker can step on the steel ladder to climb up for maintenance operation at the moment, the worker is prevented from directly climbing up the slope protection, safety is improved, and work efficiency is improved. And by adopting the foldable design, the device can be conveniently moved to different positions according to needs, and the maintenance construction time can be further saved through rapid unfolding and folding.

Description

Technical Field

[0001] This utility model relates to the field of tunnel entrance maintenance technology, specifically to a novel portable steel deformable ladder. Background Technology

[0002] Tunnel portal maintenance is crucial for ensuring the structural safety, proper functioning, and extended service life of tunnels. The tunnel portal is the connection between the tunnel and the external environment, bearing significant environmental and traffic loads. It is susceptible to natural factors (such as wind, rain, and temperature changes) and human factors (such as vehicle vibration and construction impacts). Regular maintenance typically requires cleaning drainage ditches and holes to ensure unobstructed drainage, reinforcing and filling any landslides or cracks in the slope, and periodically pruning vegetation on the slope to prevent excessive growth that could affect its stability.

[0003] In existing technologies, when workers carry out maintenance work on tunnel entrances and slopes, the inclination angle and curved shape of the slope will affect the difficulty and safety of the maintenance work. Moreover, it is difficult to transport maintenance tools on sloping slopes, which increases the complexity and time cost of the work.

[0004] In view of this, it is necessary to propose a new type of portable steel deformable ladder to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of portable steel deformable ladder to solve the problems mentioned in the background art, such as the slope angle affecting the difficulty of maintenance work when carrying out maintenance work on tunnel entrances and slopes, and the difficulty of carrying maintenance tools on inclined slopes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel portable steel deformable ladder, comprising a support frame; a support structure is connected to the support frame, two hydraulic cylinders are symmetrically installed on both sides of the support frame, the output ends of the four hydraulic cylinders are connected to a ground support structure, two connecting seats are connected to the support structure, and a lifting structure is connected to the two connecting seats.

[0007] Preferably, the support structure includes several steel frames, with adjacent steel frames rotatably connected, steel steps installed inside the steel frames, and slides provided inside the steel frames, with the steel steps located on one side of the slides.

[0008] Preferably, both steel frames are equipped with limit shafts and connectors, with the two limit shafts rotatably installed inside the corresponding connectors.

[0009] Preferably, a bearing seat is rotatably sleeved on the limiting shaft, an electric push rod is installed on one side of the bearing seat, an adapter seat is installed at the output end of the electric push rod, and four connecting rods are symmetrically rotatably installed on the adapter seat. The four connecting rods are symmetrically rotatably installed on two steel frames respectively.

[0010] Preferably, the ground support structure includes a ground support plate, which is installed on the output end of the hydraulic cylinder and is in contact with the ground.

[0011] Preferably, the lifting structure includes a connecting shaft, which is rotatably mounted inside two connecting seats. Both connecting seats are installed in corresponding slides. A worm gear is fixedly sleeved on the connecting shaft. Both ends of the connecting shaft are equipped with take-up rollers, and a lifting rope is wound on both take-up rollers. A motor is installed on the inner wall of the slide, and a worm is installed at the output end of the motor. The worm meshes with the worm wheel.

[0012] Preferably, four pulleys are symmetrically installed on the bottom side of the support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) When using this utility model, the support frame can be moved to the side of the slope at the tunnel entrance. Then, the corresponding electric push rod can be turned on to control the steel frame to flip and unfold. After the steel frame is unfolded, it can be placed on the slope for support. At this time, the workers can step on the steel steps to climb up and carry out maintenance work, avoiding direct climbing of the slope and improving safety. By adopting a foldable and unfoldable design, the device can be easily moved to different positions as needed. Furthermore, by quickly unfolding and retracting, the maintenance construction time can be further saved.

[0015] (2) After the support frame is moved to the designated position, the hydraulic cylinder can be turned on to support the floor on the ground, thereby improving the stability of the support frame. The motor can be turned on to control the rotation of the winding roller and lower the hoisting rope. The staff below can tie the box containing the maintenance tools to the hoisting rope, and then control the winding roller to retract the hoisting rope. The maintenance tools can be hoisted to the designated height so that the staff at the top can take them out and use them. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the steel frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the steel frame folding structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the exploded structure of the steel frame of this utility model;

[0020] Figure 5 This is an exploded view of the connecting seat structure of this utility model;

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Support frame; 101. Pulley; 200. Steel frame; 201. Steel step; 202. Slide rail; 203. Limiting shaft; 204. Connecting part; 205. Shaft seat; 206. Electric push rod; 207. Adapter seat; 208. Connecting rod; 300. Hydraulic cylinder; 301. Support plate; 400. Connecting seat; 401. Connecting shaft; 402. Worm gear; 403. Take-up roller; 404. Lifting rope; 405. Motor; 406. Worm. Detailed Implementation

[0023] 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.

[0024] Example 1: Please refer to Figures 1-5 This utility model provides a technical solution: a novel portable steel deformable ladder, including a support frame 100; a support structure is connected to the support frame 100, and two hydraulic cylinders 300 are symmetrically installed on both sides of the support frame 100. The output ends of the four hydraulic cylinders 300 are connected to a ground support structure. Two connecting seats 400 are connected to the support structure, and a lifting structure is connected to the two connecting seats 400. In use, the support frame 100 can be moved to the slope of the tunnel entrance, and then the hydraulic cylinders 300 are activated to drive the ground support structure to descend and support the support frame 100. At this time, by controlling the operation of the support structure, the climbing ladder can be unfolded to the slope for workers to climb. With the help of the lifting structure, maintenance tools can be easily hoisted to a high place.

[0025] Specifically, the support structure includes several steel frames 200, which are rotatably connected to each other. Steel steps 201 are installed inside the steel frames 200, and slides 202 are set inside the steel frames 200. The steel steps 201 are located on one side of the slides 202. After the steel frames 200 are unfolded, they can be placed on the slope for support. Workers can step on the steel steps 201 to climb and work at height. Debris generated during maintenance can be placed on the slides 202, which helps the debris to slide off from the slides 202.

[0026] Specifically, each of the two steel frames 200 is equipped with a limiting shaft 203 and a connecting piece 204. The two limiting shafts 203 are rotatably installed inside the corresponding connecting pieces 204. When the steel frame 200 is flipped, it can drive the corresponding connecting piece 204 to rotate on the limiting shaft 203. The limiting shaft 203 can serve as the rotation fulcrum of the steel frame 200.

[0027] Specifically, a bearing seat 205 is rotatably sleeved on the limiting shaft 203. An electric push rod 206 is installed on one side of the bearing seat 205. An adapter seat 207 is installed at the output end of the electric push rod 206. Four connecting rods 208 are symmetrically rotatably installed on the adapter seat 207. The four connecting rods 208 are symmetrically rotatably installed on two steel frames 200 respectively. When the corresponding electric push rod 206 is turned on, its output end pulls the corresponding adapter seat 207 to move towards the bearing seat 205. When the adapter seat 207 moves, it will drive one end of the two connecting rods 208 to move and flip, so that the other end of the two connecting rods 208 will rotate on the two steel frames 200 respectively, and at the same time drive the two adjacent steel frames 200 to flip.

[0028] Specifically, the ground support structure includes a support floor 301, which is installed on the output end of the hydraulic cylinder 300. The support floor 301 is in contact with the ground. When the hydraulic cylinders 300 on both sides are opened, the output end of the hydraulic cylinders 300 will drive the support floor 301 to descend and contact the ground, thus supporting the support frame 100.

[0029] Specifically, four pulleys 101 are symmetrically installed on the bottom side of the support frame 100. By setting pulleys 101 at the bottom of the support frame 100, its movement can be made smoother.

[0030] Example 2: As Figures 2-5 To facilitate the hoisting of maintenance tools to a designated height during maintenance operations, a lifting structure is provided. This structure includes a connecting shaft 401, which is rotatably mounted inside two connecting seats 400. Both connecting seats 400 are installed within corresponding slide rails 202. A worm gear 402 is fixedly sleeved on the connecting shaft 401. Rewind rollers 403 are installed at both ends of the connecting shaft 401, and lifting ropes 404 are wound around each of the two rewind rollers 403. A motor 405 is installed on the inner wall of the slide rail 202, and a worm gear 406 is installed at the output end of the motor 405. Engaging with the worm gear 402, the motor 405 is turned on, causing the output end to drive the worm 406 to rotate. The rotating worm 406 can drive the connecting shaft 401 to rotate through the engagement with the worm gear 402. This controls the rotation of the two take-up rollers 403 to release the wound lifting rope 404. The lifting rope 404 is then lowered from the slide 202 to the bottom. The workers below can use the lifting rope 404 to tie the storage box containing the maintenance tools. Then, the take-up rollers 403 are controlled to rotate in the opposite direction to pull the tools up from the slide 202, so that the maintenance tools can be hoisted to a high place. The remaining features are the same as in Embodiment 1.

[0031] The working principle is as follows: the steel frame 200 is in a flipped and folded state, which can be referred to. Figure 3 When needed, the support frame 100 is moved to the tunnel entrance. Then, the hydraulic cylinders 300 on both sides are activated. The output ends of the hydraulic cylinders 300 cause the floor support 301 to descend and contact the ground, supporting the support frame 100. Subsequently, the corresponding electric push rod 206 is activated, causing its output end to retract and pull the corresponding adapter 207 towards the shaft seat 205. As the adapter 207 moves, it causes one end of each of the two connecting rods 208 to move and rotate, causing the other ends of the two connecting rods 208 to rotate on the two steel frames 200 respectively. Simultaneously, this causes the adjacent steel frames 200 to rotate. When the steel frames 200 rotate, the corresponding connecting piece 204 rotates on the limit shaft 203, ultimately causing the steel frames 200 to rotate into... Figure 2 In its current state, after the steel frame 200 is flipped, its bottom can rest on the slopes on both sides of the tunnel entrance, using the slopes to support the steel frame 200 so that users can climb the steel steps 201. When it is necessary to hoist maintenance tools, the tools can be placed in a storage box. The motor 405 is turned on so that the output end drives the worm gear 406 to rotate. The rotating worm gear 406 can drive the worm wheel 402 to rotate through meshing with the worm wheel 402. The worm wheel 402 drives the two take-up rollers 403 to rotate through the connecting shaft 401. The rotation direction of the two take-up rollers 403 can be controlled to release the wound hoisting rope 404. The hoisting rope 404 is lowered from the slide 202 to the bottom. The workers below can use the hoisting rope 404 to tie the storage box containing the maintenance tools. Then, by controlling the take-up rollers 403 to rotate in the opposite direction, the tools are pulled up and moved from the slide 202 so that the maintenance tools can be hoisted to a higher place for use.

[0032] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A new portable steel deformation ladder comprising a support frame (100); characterized by: The support frame (100) is connected to a support structure. Two hydraulic cylinders (300) are symmetrically installed on both sides of the support frame (100). The output ends of the four hydraulic cylinders (300) are connected to a ground support structure. Two connecting seats (400) are connected to the support structure. A lifting structure is connected to the two connecting seats (400). The support structure includes several steel frames (200). Two adjacent steel frames (200) are rotatably connected. A steel step (201) is installed inside the steel frame (200). A slide (202) is provided inside the steel frame (200). The steel step (201) is located on one side of the slide (202).

2. A new portable steel deformation ladder according to claim 1 characterized by: Both steel frames (200) are equipped with limit shafts (203) and connectors (204), and the two limit shafts (203) are rotatably installed inside the corresponding connectors (204).

3. A new portable steel deformation ladder according to claim 2, characterized in that: The limiting shaft (203) is rotatably sleeved with a bearing seat (205). An electric push rod (206) is installed on one side of the bearing seat (205). An adapter seat (207) is installed at the output end of the electric push rod (206). Four connecting rods (208) are symmetrically rotatably installed on the adapter seat (207). The four connecting rods (208) are symmetrically rotatably installed on two steel frames (200).

4. A new portable steel deformation ladder according to claim 1 characterized in that: The ground support structure includes a support plate (301), which is installed on the output end of the hydraulic cylinder (300) and is in contact with the ground.

5. A new portable steel deformation ladder according to claim 1 characterized in that: The lifting structure includes a connecting shaft (401), which is rotatably mounted inside two connecting seats (400). Both connecting seats (400) are mounted in corresponding slides (202). A worm gear (402) is fixedly sleeved on the connecting shaft (401). Both ends of the connecting shaft (401) are equipped with take-up rollers (403), and a lifting rope (404) is wound on both take-up rollers (403). A motor (405) is installed on the inner wall of the slide (202), and a worm (406) is installed at the output end of the motor (405). The worm (406) meshes with the worm gear (402).

6. A new portable steel deformation ladder according to claim 1 characterized in that: The support frame (100) has four pulleys (101) symmetrically installed on its bottom side.

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