Securing device for rope ladders used for live-line work on power transmission lines

Abstract

This utility model provides a rope ladder fixing device for live-line working on power transmission lines, belonging to the field of power technology. It includes a trapezoidal frame, winding wheels, a rotating shaft, and ground spikes. The trapezoidal frame is constructed of lightweight metal or high-strength insulating material, with spike holes at the bottom. The winding wheels, composed of multiple sets of parallel nylon rollers, are installed inside the trapezoidal frame to guide the rope ladder's deployment and retraction path. The rotating shaft is connected to the winding wheels and can rotate on the trapezoidal frame. Ground spikes pass through the spike holes to fix the trapezoidal frame to the ground. This rope ladder fixing device makes the overall deployment and retraction speed of the rope ladder faster and more stable, significantly reducing the time spent preparing the rope ladder on the ground and accelerating work preparation efficiency. Furthermore, it is lightweight, flexible, and has a simple structure. Compared to the traditional method of burying ground anchors, it eliminates the need to transport heavy ground anchors or dig pits in advance, greatly reducing the physical exertion of workers and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and more specifically, to a fixing device for a rope ladder for live-line work on power transmission lines. Background Technology

[0002] In the power sector, live-line work and power outage maintenance on transmission lines rely heavily on rope ladders, a tool for working at height. With the continuous expansion of the power grid and the increasing number of transmission lines, ensuring the stable operation of these lines has become increasingly critical, placing higher demands on rope ladder securing technology.

[0003] Currently, the commonly used methods for fixing rope ladders in practical operations mainly include the ground anchor method and the multi-person drop ladder method. The ground anchor method is suitable for easily excavated ground, allowing the rope ladder to achieve a relatively ideal fixed state. However, ground anchors are usually quite heavy, and moving them and digging the pit beforehand requires a significant amount of physical strength from the workers, which not only reduces work efficiency but also increases the labor intensity. Moreover, this method is simply impossible to implement in areas with complex geological conditions, such as rocky ground or hard frozen soil where excavation is difficult. The multi-person drop ladder method applies a certain amount of gravity to the lower end of the rope ladder to keep it vertical from top to bottom, thus achieving the purpose of fixing the rope ladder. However, this method requires a large number of workers to complete, resulting in high labor costs. Furthermore, due to the instability of personnel operation, it is difficult to ensure that the rope ladder remains in a vertical and taut state at all times. In actual operations, the swaying of the rope ladder may cause workers to lose their balance, increasing the risk of falls and endangering their lives. In addition, with traditional rope ladder fixing methods, once the rope ladder is fixed, workers cannot adjust the overall height of the rope ladder. When the height of the power transmission line requiring maintenance exceeds the reach of the fixed rope ladder, workers cannot carry out maintenance work, causing significant inconvenience. Furthermore, the fixed rope ladder is difficult to move; if workers need to repair different locations on the power transmission line, the ladder must be moved and re-secured, a cumbersome process that severely reduces work efficiency. Given the numerous drawbacks of existing rope ladder fixing methods, the development of a new, more efficient, safe, and flexible rope ladder fixing device for live-line work on power transmission lines is urgently needed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a fixing device for a rope ladder for live-line work on power transmission lines, which aims to improve the problems of existing rope ladders being unable to adapt to complex environments and having high labor costs.

[0005] This utility model is implemented as follows: This utility model provides a fixing device for a rope ladder for live-line work on power transmission lines, including a trapezoidal frame, a winding wheel, a rotating shaft, and a ground nail.

[0006] The trapezoidal frame is made of lightweight metal or high-strength insulating material and has nail holes at the bottom.

[0007] The winding wheel, consisting of multiple sets of parallel nylon rollers, is installed inside the trapezoidal frame and is used to guide the rope ladder's extension and retraction path.

[0008] A rotating shaft is connected to the winding wheel and is rotatable on the trapezoidal frame.

[0009] Ground stakes are used to secure the trapezoidal frame to the ground by passing through the stake holes.

[0010] In one embodiment of this utility model, the spacing of the nylon rollers matches the width of the rope ladder, and the surface is provided with anti-slip texture.

[0011] In one embodiment of this utility model, a crank handle is connected to one end of the rotating shaft.

[0012] In one embodiment of this utility model, the end of the ground nail has a spiral structure.

[0013] In one embodiment of this utility model, the top of the trapezoidal frame is provided with a bushing, and the rotating shaft is rotatably connected to the bushing.

[0014] In one embodiment of this utility model, the trapezoidal frame has a slot of a certain length, the bushing is slidably connected to the slot, and can be positioned to a designated position in the slot.

[0015] The beneficial effects of this utility model are: the live-line working rope ladder fixing device obtained by the above design of this utility model keeps the trapezoidal frame stable during the process of raising and lowering the rope ladder, so as to achieve the effect of raising and lowering freely. Drawing on the principle of fishing gear spinning wheel, the device is assembled with materials such as rollers, crank handles, ground nails, and nail holes, so that the overall raising and lowering speed of the device becomes fast and stable.

[0016] The design incorporates a simple mechanical retrieval structure, which replaces the tedious process of manually retrieving and transferring the rope ladder segment by segment through manual or human-powered operation. This significantly reduces the time the rope ladder spends on the ground and speeds up the efficiency of work preparation.

[0017] Using a single-person-operable collection device reduces the need for multiple people to cooperate in traditional manual transfer (such as ground transfer, high-altitude response, etc.), thereby reducing manpower input in the operation process and saving labor costs;

[0018] The main pulling force during the rope ladder retrieval process is converted into the force of the equipment's labor-saving structure, reducing the physical burden on operators when passing the rope ladder and avoiding operational errors or decreased efficiency caused by physical exhaustion during high-altitude operations. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of a rope ladder fixing device for live-line work on power transmission lines provided by an embodiment of this utility model;

[0021] Figure 2 A front view of a rope ladder fixing device for live-line working on power transmission lines provided for an embodiment of this utility model;

[0022] Figure 3 A top view of a rope ladder fixing device for live-line work on power transmission lines, provided for an embodiment of this utility model.

[0023] In the diagram: 1-trapezoidal frame; 11-nail hole; 12-shaft sleeve; 13-slot; 2-winding wheel; 21-nylon roller; 3-shaft; 31-crank handle; 4-ground nail. Detailed Implementation

[0024] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, 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 scope of protection of this utility model.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Example

[0032] Please see Figure 1 This utility model provides a technical solution: a fixing device for a rope ladder for live-line work on power transmission lines, including a trapezoidal frame 1, a winding wheel 2, a rotating shaft 3, and a ground nail 4.

[0033] Please refer to Figure 1The trapezoidal frame 1 is used for support and installation, the winding wheel 2 is used for winding the rope ladder, the pivot 3 is used to drive the winding wheel 2 to rotate, and the ground nail 4 can position the trapezoidal frame 1 on the ground to achieve locking.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The trapezoidal frame 1 is constructed of lightweight metal or high-strength insulating material, with nail holes 11 at the bottom. The winding wheel 2 consists of multiple sets of parallel nylon rollers 21, installed inside the trapezoidal frame 1, used to guide the rope ladder's winding path. Specifically, the spacing of the nylon rollers 21 matches the width of the rope ladder, and their surfaces are textured with anti-slip patterns. The low-friction characteristics of the nylon rollers 21 guide the rope ladder's winding path, preventing direct friction between the rope ladder and metal components that could damage the insulation layer. Simultaneously, the spacing and angle of the nylon rollers 21 must be precisely designed according to the width of the rope ladder to ensure smooth winding. The rotating shaft 3 is connected to the winding wheel 2 and can rotate on the trapezoidal frame 1. One end of the rotating shaft 3 is connected to a crank 31, which adopts a manual crank structure to reduce the physical exertion of the operator. At the same time, a self-locking device is set to prevent the rope ladder from slipping after being gathered. An adjustable damper is also integrated into the crank transmission system. The operator can adjust the gathering speed by turning a knob: reduce the damping when gathering quickly and increase the damping braking in an emergency to achieve flexible control of the gathering and releasing speed and prevent the rope ladder from shaking or falling off due to excessive speed. The ground nail 4 passes through the nail hole 11 to fix the trapezoidal frame 1 to the ground. The end of the ground nail 4 has a spiral structure, which can be better inserted and locked into the ground. It is suitable for fixing on various terrains, even on hard soil. This is incomparable to existing technologies such as the multi-person drop ladder method and reduces the restriction on the working site.

[0035] Please see Figure 1 , Figure 2 and Figure 3 The trapezoidal frame 1 has a bushing 12 at the top, and the rotating shaft 3 is rotatably connected to the bushing 12. The trapezoidal frame 1 has a slot 13 of a certain length, and the bushing 12 is slidably connected to the slot 13 and can be positioned at a designated position in the slot 13. After the ground is locked, the device can be equipped with the slot 13 to fix the structure, and the position of the rope ladder can be fixed at any time according to actual needs, so that the rope ladder can always be kept vertical and taut. It is simple, quick and efficient to use, and effectively ensures the safety of the workers. In contrast, the method of multiple people falling into the ladder cannot guarantee that the rope ladder is always in a vertical and taut state.

[0036] Specifically, the working principle of the live-line working rope ladder fixing device is as follows: During the process of raising and lowering the rope ladder, the crank handle 31 is turned, which in turn drives the rotating shaft 3 to rotate within the bushing 12, thereby driving the winding wheel 2 to rotate, so that the rope ladder can be rolled up or unrolled on the nylon roller 21. At the same time, before raising and lowering the rope ladder, the trapezoidal frame 1 needs to be fixed to the ground by passing ground nails 4 through nail holes 11. It is suitable for fixing various terrains and ground, even hard soil. This is incomparable to existing technologies such as the multi-person ladder drop method, and reduces the restrictions on the working site.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A power line live working soft ladder fixation device, characterized in that, include The trapezoidal frame (1) is made of lightweight metal or high-strength insulating material and has nail holes (11) at the bottom. The winding wheel (2) consists of multiple sets of parallel nylon rollers (21) and is installed inside the trapezoidal frame (1) to guide the rope ladder's winding and unwinding path; A rotating shaft (3) is connected to the winding wheel (2) and is capable of rotating on the trapezoidal frame (1); Ground nails (4) are used to fix the trapezoidal frame (1) to the ground through the nail holes (11).

2. A ladder fixing device for live working on a power line according to claim 1, characterized in that, The spacing of the nylon rollers (21) matches the width of the rope ladder, and the surface is provided with anti-slip texture.

3. The ladder fixing device for live working on power transmission lines according to claim 1, characterized in that, One end of the rotating shaft (3) is connected to a crank handle (31).

4. The soft ladder fixing device for live working on power transmission lines according to claim 1, characterized in that, The end of the ground nail (4) has a spiral structure.

5. The soft ladder fixture for live-line work on power lines according to claim 1, wherein The trapezoidal frame (1) is provided with a bushing (12) at the top, and the rotating shaft (3) is rotatably connected to the bushing (12).

6. A ladder fixing device for live working on a power line according to claim 5, characterized in that The trapezoidal frame (1) has a slot (13) of a certain length, and the bushing (12) is slidably connected to the slot (13) and can be positioned to a specified position of the slot (13).

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