High-altitude operation device for tunnel maintenance

Abstract

The utility model relates to the technical field of high-altitude operation devices, and particularly discloses a high-altitude operation device for tunnel maintenance. The working platform is arranged on the elevator; the protective screen plate is movably mounted on the periphery of the working platform; and the shrinking assembly is used for shrinking the protective screen plate. According to the high-altitude operation device for tunnel maintenance, when the high-altitude operation device is used for tunnel maintenance, the protective net plates on the periphery of the side wall of the operation platform can be unfolded at the same time through the contraction assembly, tools falling in the maintenance operation are shielded, and the tools are prevented from falling to injure personnel below an operation area; and when not in use, the four protective screen plates are stored at the same time, so that the working efficiency is improved, and the labor capacity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of aerial work platforms, specifically to an aerial work platform for tunnel maintenance. Background Technology

[0002] A tunnel is an engineering structure buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels, among others. The structure of a tunnel comprises two parts: the main structure and auxiliary equipment. The main structure consists of the tunnel body and portals, while auxiliary equipment includes passing bays, fire-fighting facilities, emergency communication systems, and drainage systems. Longer tunnels also have specialized ventilation and lighting equipment. During tunnel maintenance, due to the considerable height of the tunnel, aerial work platforms are often used to assist in the process.

[0003] A patent for a high-altitude work device for tunnel maintenance, with announcement number CN221217083U, includes a maintenance platform connecting seat. A mounting frame is fixed to the top of the maintenance platform connecting seat, and a metal frame is provided on the outer side of the mounting frame. The device is equipped with a first adjustment device, which provides stable support to the bottom of the maintenance platform connecting seat through a fixed seat and a support bracket, expanding the angle adjustment range of the maintenance platform connecting seat. This allows for adjustments to adapt to the actual maintenance needs of the tunnel, avoiding the problem of inconvenient operation caused by limited angles, and facilitating the normal progress of tunnel maintenance. The device is also equipped with a second adjustment device, which allows for raising and lowering of the maintenance platform connecting seat after the maintenance support seat is installed at the bottom of the maintenance platform mounting seat. This simplifies both the angle adjustment and the raising and lowering operation of the maintenance platform connecting seat, making it beneficial for high-altitude tunnel maintenance operations.

[0004] However, in this existing technology, people need to be lifted into the air to work at height. When working at height, the workers need to lean their upper bodies out of the guardrail, which may cause the tools to slip and fall. The falling tools may be damaged or even cause injury to people below the work area, posing a certain safety hazard.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this utility model is to provide a high-altitude operation device for tunnel maintenance that can effectively solve the above-mentioned technical problems.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted:

[0008] A high-altitude work device for tunnel maintenance includes: a lift; a work platform mounted on the lift; a protective mesh panel movably installed around the work platform; and a retraction assembly for retracting the protective mesh panel.

[0009] The retraction assembly includes: two support plates fixedly installed on the work platform; U-shaped plates symmetrically fixedly installed on the support plates; a first double-headed bevel gear shaft rotatably installed on the two U-shaped plates; a second double-headed bevel gear shaft meshing with the first double-headed bevel gear shaft; a take-up wheel fixedly installed on the first double-headed bevel gear shaft and the second double-headed bevel gear shaft; a pull rope fixedly connected to the take-up wheel, with one end of the pull rope fixedly connected to an adjacent protective net plate; and a guide wheel for guiding the pull rope during its pulling process, with the guide wheel fixedly installed on the work platform.

[0010] Furthermore, a positioning sleeve is fixedly connected to the side wall of the work platform, and a hinge shaft is rotatably installed in the positioning sleeve. The hinge shaft is fixedly connected to one side of the protective mesh plate.

[0011] Furthermore, the protective mesh panel is curved on the side closest to the work platform, and one side of the protective mesh panel is erected on the side wall of the work platform in an arc shape.

[0012] Furthermore, a baffle is fixedly connected to the top of the protective mesh panel on the side wall away from the work platform.

[0013] Furthermore, a handwheel is fixedly connected to the surface of the second double-headed bevel gear shaft, and the sidewall of the handwheel is provided with several grooves at equal intervals along the circumference.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In tunnel maintenance using aerial work platforms, the protective netting on all four sides of the work platform can be unfolded simultaneously by means of the retractable assembly to cover tools that fall during maintenance work and prevent them from causing injury to personnel below the work area. When not in use, the four protective netting panels can be stored at the same time, which improves work efficiency and reduces the workload of workers. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] Figure 1 This is a front view schematic diagram of the present invention;

[0017] Figure 2 This is a top view of a partial structure of the shrinkage component of this utility model;

[0018] Figure 3 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] Figure 4 This is a left-side view of a partial structure of the shrinkage component of this utility model.

[0020] In the diagram: 1. Elevator; 2. Working platform; 3. Protective netting; 301. Stop bar; 4. Retractable assembly; 401. Support plate; 402. U-shaped plate; 403. First double-headed bevel gear shaft; 404. Second double-headed bevel gear shaft; 405. Winding reel; 406. Pull rope; 407. Guide wheel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0023] like Figures 1 to 4 As shown, this utility model discloses a high-altitude operation device for tunnel maintenance, comprising: a hoist 1; a work platform 2 installed on the hoist 1; a protective netting 3 movably installed around the work platform 2; and a retraction assembly 4 for retracting the protective netting 3.

[0024] The retraction assembly 4 includes: two support plates 401 fixedly installed on the work platform 2; U-shaped plates 402 symmetrically fixedly installed on the support plates 401; a first double-headed bevel gear shaft 403 rotatably installed on the two U-shaped plates 402; a second double-headed bevel gear shaft 404 meshing with the first double-headed bevel gear shaft 403; a winding wheel 405 fixedly installed on the first double-headed bevel gear shaft 403 and the second double-headed bevel gear shaft 404; a pull rope 406 fixedly connected to the winding wheel 405, preferably a nylon rope, and one end of the pull rope 406 fixedly connected to an adjacent protective net plate 3; and a guide wheel 407 that guides the pull rope 406 during the pulling process, and the guide wheel 407 is fixedly installed on the work platform 2.

[0025] It should be added that bearings are provided at both ends of the first double-ended bevel gear shaft 403 and the second double-ended bevel gear shaft 404, and the inner rings of the bearings are fixedly connected to the surfaces of the first double-ended bevel gear shaft 403 and the second double-ended bevel gear shaft 404, respectively, and the outer rings of the bearings are fixedly connected to the interior of the U-shaped plate 402. By setting the bearings, the rotational stability of the first double-ended bevel gear shaft 403 and the second double-ended bevel gear shaft 404 is improved.

[0026] In addition, the four pull ropes 406 are wound around the corresponding take-up reel 405 according to the rotation direction of the corresponding first double-headed bevel gear shaft 403 and second double-headed bevel gear shaft 404, so that when the first double-headed bevel gear shaft 403 and second double-headed bevel gear shaft 404 rotate, the four pull ropes 406 can be wound and unwound simultaneously, so as to realize the simultaneous contraction or expansion of the four protective net panels 3.

[0027] When performing tunnel maintenance using an aerial work platform, by turning the handwheel on the second double-headed bevel gear shaft 404, the two symmetrical first double-headed bevel gear shafts 403 and the two symmetrical second double-headed bevel gear shafts 404 rotate simultaneously under mutual meshing. At this time, the protective net panels 3 hinged to the side walls of the work platform 2 flip under their own weight, causing the four protective net panels 3 to unfold. On the one hand, this can protect the tools that fall during maintenance work, preventing them from falling and causing injury to personnel below the work area.

[0028] On the other hand, when storing the protective netting 3, by turning the handwheel in the opposite direction, the pull rope 406 on the winding wheel 405 pulls the corresponding protective netting 3 to flip under the action of the meshing of the first double-headed bevel gear shaft 403 and the second double-headed bevel gear shaft 404, thereby storing the four protective netting 3 at the same time, improving work efficiency and reducing the workload of the staff.

[0029] It should be added that the side wall of the working platform 2 is fixedly connected to a positioning sleeve, and a hinge shaft is rotatably installed in the positioning sleeve. The hinge shaft is fixedly connected to one side of the protective net plate 3. The working platform 2 and the protective net plate 3 are rotatably installed through the hinge shaft, which improves the stability of the protective net plate 3 when it is turned over.

[0030] It should be noted that the protective netting 3 is curved on the side closest to the working platform 2, and one side of the protective netting 3 is mounted on the side wall of the working platform 2 in a curved shape. Because of the curved shape on one side of the protective netting 3, it will not interfere with the protective netting 3 during the flipping process, and will not affect the rotation of the protective netting 3.

[0031] It should be added that a baffle 301 is fixedly connected to the top of the protective netting 3 away from the side wall of the work platform 2; the baffle 301 is used to block tools that fall on the surface of the protective netting 3, preventing them from rolling off the surface of the protective netting 3 and causing injury to personnel below the work area.

[0032] In addition, it should be noted that a handwheel is fixedly connected to the surface of the second double-headed bevel gear shaft 404, and several grooves are equidistantly provided on the side wall of the handwheel along the circumference; the handwheel and the grooves on the handwheel provide an anti-slip function, and by simply rotating the handwheel on the second double-headed bevel gear shaft 404, the four protective net panels 3 around the working platform 2 can be simultaneously retracted and extended under the mutual meshing action of the first double-headed bevel gear shaft 403 and the second double-headed bevel gear shaft 404, thus improving convenience.

[0033] Working principle: When performing tunnel maintenance using the aerial work platform, by rotating the handwheel on the second double-headed bevel gear shaft 404, the two symmetrical first double-headed bevel gear shafts 403 and the two symmetrical second double-headed bevel gear shafts 404 rotate simultaneously under mutual meshing. At this time, the protective net panels 3 hinged to the side walls of the work platform 2 flip under their own weight, causing the four protective net panels 3 to unfold, thus protecting tools that fall during maintenance work and preventing them from injuring personnel below the work area. When retracting the protective net panels 3, by rotating the handwheel in the opposite direction, the pull rope 406 on the winding wheel 405 pulls the corresponding protective net panel 3 to flip under the mutual meshing of the first double-headed bevel gear shaft 403 and the second double-headed bevel gear shaft 404, thereby retracting all four protective net panels 3 simultaneously.

[0034] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A high-altitude work device for tunnel maintenance, characterized in that, include: lift; The work platform is installed on the elevator; The protective mesh panels are installed around the perimeter of the work platform. And a shrinking assembly for shrinking the protective mesh panel; The retraction assembly includes: two support plates fixedly installed on the work platform; and U-shaped plates symmetrically fixedly installed on the support plates; A first double-headed bevel gear shaft is rotatably mounted on the two U-shaped plates; a second double-headed bevel gear shaft meshes with the first double-headed bevel gear shaft; a take-up reel is fixedly mounted on the first double-headed bevel gear shaft and the second double-headed bevel gear shaft; a pull rope is fixedly connected to the take-up reel, and one end of the pull rope is fixedly connected to the adjacent protective net plate; and a guide wheel guides the pull rope during the pulling process, and the guide wheel is fixedly mounted on the working platform.

2. The high-altitude work device for tunnel maintenance as described in claim 1, characterized in that, The side wall of the work platform is fixedly connected to a positioning sleeve, and a hinge shaft is rotatably installed in the positioning sleeve. The hinge shaft is fixedly connected to one side of the protective net plate.

3. The high-altitude work device for tunnel maintenance as described in claim 1, characterized in that, The protective netting is curved on the side closest to the work platform, and one side of the protective netting is erected on the side wall of the work platform in an arc shape.

4. The high-altitude work device for tunnel maintenance as described in claim 1, characterized in that, The top of the protective mesh panel is fixedly connected to the side wall away from the work platform with a retaining strip.

5. The high-altitude work device for tunnel maintenance as described in claim 1, characterized in that, A handwheel is fixedly connected to the surface of the second double-headed bevel gear shaft, and the side wall of the handwheel is provided with several grooves at equal intervals along the circumference.

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