Cable safety laying device in cable live environment of bridge

Abstract

The utility model provides a kind of cable safe laying device under cable live environment of bridge, including several auxiliary supports, each auxiliary support includes two first auxiliary rods of parallel arrangement, two second auxiliary rods of parallel arrangement and fixed pulley, two second auxiliary rods are arranged between two first auxiliary rods, second auxiliary rod is perpendicular to first auxiliary rod, and the end of second auxiliary rod is detachably connected to the side wall of first auxiliary rod;The side wall of each second auxiliary rod is obliquely provided with two support rods, and the ends of the two support rods away from the second auxiliary rod intersect at a point, the fixed pulley is rotatably connected to the intersection point of the two support rods, and the outer periphery of the fixed pulley is provided with an insulating layer, with the effects of reducing accident risk, reducing cost and improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of cable laying auxiliary tools, specifically to a cable safety laying device in a live cable environment within a cable tray. Background Technology

[0002] In the field of power engineering, laying new cables in energized environments within cable trays has always been a technical challenge. Traditional methods mainly rely on manual cable dragging, requiring power outages or disconnections to avoid contact with existing energized cables, which has significant drawbacks: First, manual operation easily leads to friction or compression between the cable and existing energized cables in the cable tray, causing insulation damage and potentially resulting in short circuits, arcing, or even electric shocks. Second, power outages severely disrupt the continuous operation of the power system, increasing project costs and time losses. Third, when cable tray space is limited, the lack of specialized tools for separating new and old cables in layers easily leads to cross-interference and reduces construction efficiency. While existing technologies attempt to alleviate the problem by adding new cable tray routes or laying cables in sections, they cannot simultaneously guarantee safety and ease of construction. Therefore, there is an urgent need for a device that can safely and efficiently lay cables in energized environments to overcome the aforementioned technical bottlenecks. Utility Model Content

[0003] The purpose of this utility model is to provide a cable safety laying device in a live cable environment within a cable tray, so as to solve the problems of low safety, high downtime costs, and low construction efficiency.

[0004] To achieve the above objectives, the present invention provides a cable safety laying device for cables in a live environment within a cable tray, employing the following technical solution:

[0005] A cable safety laying device for cables in a live environment within a cable tray includes several auxiliary supports. Each auxiliary support includes two parallel first auxiliary rods, two parallel second auxiliary rods, and a fixed pulley. The two second auxiliary rods are positioned between the two first auxiliary rods and are perpendicular to the first auxiliary rods. The ends of the second auxiliary rods are detachably connected to the sidewalls of the first auxiliary rods. Two support rods are inclinedly arranged on the sidewalls of each second auxiliary rod. The ends of the two support rods away from the second auxiliary rods intersect at a point. The fixed pulley is rotatably connected to the intersection point of the two support rods. An insulating layer is provided on the outer circumferential surface of the fixed pulley.

[0006] As an optimization of a cable safety laying device in a live cable environment within a cable tray, the length of the first auxiliary rod ranges from 200mm to 600mm.

[0007] As an optimization of a cable safety laying device in a live cable environment within a cable tray, the insulation layer is made of nylon or rubber, and the surface of the insulation layer is provided with anti-slip texture.

[0008] As an optimization of a cable safety laying device in a live cable environment within a cable tray, both the first auxiliary rod and the second auxiliary rod are C-shaped steel, and a right-angle connector is provided at the connection between the first auxiliary rod and the second auxiliary rod.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] (1) Significantly improved safety performance: By suspending the fixed pulley above the cable tray with an auxiliary support, the cable to be laid is completely isolated from the original energized cable, avoiding friction and squeezing during dragging, and fundamentally eliminating the risk of short circuit and electric shock caused by insulation damage. The insulation layer on the outer circumference of the fixed pulley further enhances the safety of live work, and there is no need to shut down the power.

[0011] (2) Significantly improved construction efficiency: The device adopts standardized C-shaped steel (first and second auxiliary rods) and right-angle connectors, enabling rapid modular assembly and disassembly, significantly shortening construction time. The length of the first auxiliary rod (200mm-600mm) can be adapted to different specifications of cable trays, making it highly versatile. Multiple supports form a continuous low-resistance track, greatly reducing the difficulty of dragging, requiring only 1-2 people to operate efficiently.

[0012] (3) Stable structure and reduced cost: The intersecting support rods support the fixed pulley to form a stable triangular structure, and the right-angle connectors ensure overall rigidity. The structure is simple, the components are sturdy and durable and can be reused, which reduces the cost of each construction and maintenance, and eliminates the costly losses due to power outages. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the installation of the cable safety laying device according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the overall structure of a single auxiliary support according to an embodiment of this application.

[0016] In the diagram: 1. Auxiliary support; 10. Cable tray; 11. Layed cable; 12. Cable to be laid; 2. First auxiliary rod; 3. Second auxiliary rod; 4. Fixed pulley; 5. Support rod; 6. Right-angle connector. Detailed Implementation

[0017] To make the technical solution and advantages of this utility model clearer, the present utility model and its beneficial effects will be described in further detail below with reference to specific embodiments and accompanying drawings. However, the embodiments of this utility model are not limited thereto.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" 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 mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] 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, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0020] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail below.

[0021] This application provides a cable safety laying device for cables in a live environment within a cable tray, employing the following technical solution:

[0022] Reference Figure 1 and Figure 2This device includes several auxiliary supports 1, which are installed on different support columns above the cable tray 10 with laid cables 11. Multiple auxiliary supports 1 are arranged and installed along the extension direction of the cables. Each auxiliary support 1 includes a first auxiliary rod 2, a second auxiliary rod 3, and a fixed pulley 4. There are two first auxiliary rods 2, which are parallel to each other and are installed laterally above the cable tray 10 with laid power cables, forming a supporting beam for the fixed pulley 4 suspended above the cable tray 10. Furthermore, the width of the first auxiliary rod 2 is selected according to different specifications of the cable tray 10, and the length of the first auxiliary rod 2 ranges from 200mm to 600mm to adapt to different construction environments. There are two second auxiliary rods 3, which are parallel to each other and located between the two first auxiliary rods 2. The second auxiliary rods 3 are installed perpendicular to the first auxiliary rods 2, and their ends are detachably connected to the side walls of the first auxiliary rods 2. The second auxiliary rods 3 form the upper and lower supports of the first auxiliary rods 2, keeping the two first auxiliary rods 2 parallel to each other. Furthermore, both the first auxiliary rod 2 and the second auxiliary rod 3 are C-shaped steel. C-shaped steel is a cold-formed or hot-rolled steel with a "C"-shaped cross-section. The sidewalls of C-shaped steel typically have multiple through holes for bolt installation. A right-angle connector 6 is installed at the connection between the first auxiliary rod 2 and the second auxiliary rod 3. The right-angle connector 6 can be a metal angle bracket, plastic clip, or other structural component that fixes the two components together at a 90-degree angle. Through the cooperation of the right-angle connector 6 and bolts, the firmness between the first auxiliary rod 2 and the second auxiliary rod 3 can be improved, thus enhancing the overall stability of the auxiliary support 1.

[0023] Reference Figure 1 and Figure 2 Two support rods 5 are obliquely welded to the side wall of each second auxiliary rod 3. One end of each support rod 5 is fixed to both ends of the same second auxiliary rod 3, while the other ends of the two support rods 5 are inclined towards the center point of the second auxiliary rod 3 and intersect at a point. The second auxiliary rod 3 and the two support rods 5 form an isosceles triangle. The fixed pulley 4 is rotatably installed at the intersection of the two support rods 5. The two second auxiliary rods 3 are located on both sides of the fixed pulley 4, forming a triangular stable support on both sides of the fixed pulley 4, thereby improving the stability of the fixed pulley 4 installation. Furthermore, the outer circumference of the fixed pulley 4 is wrapped with an insulating layer made of nylon or rubber, which can reduce the risk of electric shock to operators. At the same time, the outer circumference of the fixed pulley 4 is also engraved with anti-slip patterns, which can be V-shaped or wavy, to increase the friction between the cable and the fixed pulley 4, prevent the cable from slipping relative to the fixed pulley 4, and help improve the cable laying efficiency.

[0024] The implementation process and experimental principle of this application embodiment are as follows: Above the cable tray 10 where the cable 11 has been laid, multiple auxiliary supports 1 are arranged along the length of the cable. The fixed pulleys 4 of the multiple auxiliary supports 1 can form a straight laying path at the same height or a stepped laying path at different heights. Each auxiliary support 1 is suspended and fixed above the cable tray 10 by two parallel first auxiliary rods 2; the connection stability of the first auxiliary rods 2 is reinforced by two parallel second auxiliary rods 3, and then the fixed pulleys 4 are rotatably installed on the support rods 5, that is, fixed on the side of the second auxiliary rods 3. At the same time, the cable 12 to be laid is placed around the multiple fixed pulleys 4 in sequence, so that the cable 12 to be laid is suspended above the laid cable 11, avoiding contact and friction with the laid cable 11. By dragging the cable 12 to be laid on the fixed pulleys 4, the cable 12 to be laid is moved to the designated position, and then the auxiliary supports 1 are disassembled one by one, and the cable 12 to be laid is dropped into the cable tray 10. Under the action of this device, the cable to be laid 12 is isolated from the already laid cable 11, avoiding direct contact and reducing the risk of insulation layer damage or short circuit caused by friction and squeezing; it can simultaneously complete the dragging and laying of the cable to be laid while the already laid cable 11 is working normally, thereby reducing safety risks, reducing time costs, and improving construction efficiency.

[0025] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A cable safety laying device for cables in a live environment within a cable tray, characterized in that, It includes several auxiliary supports (1), each of the auxiliary supports (1) includes two first auxiliary rods (2) arranged in parallel, two second auxiliary rods (3) arranged in parallel, and a fixed pulley (4). The two second auxiliary rods (3) are arranged between the two first auxiliary rods (2), and the second auxiliary rods (3) are perpendicular to the first auxiliary rods (2). The ends of the second auxiliary rods (3) are detachably connected to the side wall of the first auxiliary rods (2). The side wall of each second auxiliary rod (3) is inclinedly provided with two support rods (5). The ends of the two support rods (5) away from the second auxiliary rods (3) intersect at a point. The fixed pulley (4) is rotatably connected to the intersection of the two support rods (5). The outer peripheral surface of the fixed pulley (4) is provided with an insulating layer.

2. The cable safety laying device in a live cable environment within a cable tray according to claim 1, characterized in that, The length of the first auxiliary rod (2) ranges from 200mm to 600mm.

3. The cable safety laying device in a live cable environment within a cable tray according to claim 1, characterized in that, The insulating layer is made of nylon or rubber, and its surface is provided with anti-slip texture.

4. A cable safety laying device for cables in a live environment within a cable tray according to claim 1, characterized in that, Both the first auxiliary rod (2) and the second auxiliary rod (3) are C-shaped steel, and a right-angle connector (6) is provided at the connection between the first auxiliary rod (2) and the second auxiliary rod (3).

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