A photovoltaic cable laying device for coal mining subsidence areas

Abstract

This application relates to the field of photovoltaic equipment technology, and particularly to a photovoltaic cable laying device for coal mining subsidence areas, comprising a pile body; steel strands installed on the pile body; and a hoisting device including a first steel bar, a second steel bar, and an arc-shaped support body. The first and second steel bars are arranged crosswise. A first bending segment of the first steel bar is bent to form a first hook, and a second bending segment of the second steel bar is bent to form a second hook. The second hook is wrapped around the outer periphery of the first hook. The end of the first connecting segment of the first steel bar is connected to one end of the arc-shaped support body, and the end of the second connecting segment of the second steel bar is connected to the other end of the arc-shaped support body. The hoisting device of this application is easy to install, highly reliable, and low in cost, effectively reducing the cost of aerial cable laying compared to traditional cable clamps.

Description

Technical Field

[0001] This application relates to the field of photovoltaic equipment technology, and in particular to a photovoltaic cable laying device for coal mining subsidence areas. Background Technology

[0002] With the scarcity of land for photovoltaic projects, photovoltaic projects combined with coal mining subsidence area remediation are now being promoted. Building photovoltaic projects in coal mining subsidence areas not only reuses abandoned land but also restores the ecological environment of these areas. However, surface displacement caused by coal mining may damage directly buried cables within the photovoltaic area, endangering the safety of electrical equipment and cables. Currently, most photovoltaic projects bury cables directly in the ground; surface displacement caused by coal mining subsidence will pull on these cables, causing damage. Therefore, cables in coal mining subsidence areas generally need to be laid overhead, but overhead cable laying is costly, especially the cost of cable clamps. Utility Model Content

[0003] This application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a photovoltaic cable laying device for coal mining subsidence areas, which effectively reduces the cost of aerial cable laying compared to traditional cable clamps.

[0004] A photovoltaic cable laying device for coal mining subsidence areas includes:

[0005] pile body;

[0006] Steel strands are installed on the pile body;

[0007] Multiple lifting devices are provided, each spaced apart along the cable laying direction on the steel strand. Each lifting device includes a first steel bar, a second steel bar, and an arc-shaped support. The first and second steel bars are arranged intersectingly. The portion of the first steel bar above the intersection is a first bending segment, and the portion of the first steel bar below the intersection is a first connecting segment. The portion of the second steel bar above the intersection is a second bending segment, and the portion of the second steel bar below the intersection is a second connecting segment. The first bending segment of the first steel bar bends to form a first hook, and the second bending segment of the second steel bar bends... A second hook is formed, which wraps around the outer periphery of the first hook. The bending direction of the first hook is opposite to that of the second hook. The hoisting device is fixed to the steel strand through the first hook and the second hook. The end of the first connecting segment of the first steel bar is connected to one end of the arc-shaped support body, and the end of the second connecting segment of the second steel bar is connected to the other end of the arc-shaped support body. The arc-shaped support body is arranged to arch downward between the first connecting segment and the second connecting segment. The first connecting segment, the second connecting segment, and the arc-shaped support body enclose a space to accommodate the cable.

[0008] In an optional or preferred embodiment, the length of the first curved segment is less than the length of the first connecting segment, and the length of the second curved segment is less than the length of the second connecting segment.

[0009] In an optional or preferred embodiment, the wrapping length of the second hook is greater than three-quarters of the arc length of the first hook.

[0010] In an optional or preferred embodiment, the arc-shaped support is a wire rope structure.

[0011] In an optional or preferred embodiment, a sleeve is also included for covering the cable.

[0012] In an optional or preferred embodiment, the sleeve has a flame-retardant layer.

[0013] In an optional or preferred embodiment, the sleeve has a waterproof layer located outside the flame-retardant layer.

[0014] In an optional or preferred embodiment, the sleeve further has a wear-resistant layer located outside the waterproof layer.

[0015] In an optional or preferred embodiment, an opening is provided on one side of the sleeve, and the opening of the sleeve is provided with a detachable device.

[0016] In an optional or preferred embodiment, the detachable device includes Velcro.

[0017] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: the hoisting device is fixed to the steel strand by the first hook and the second hook. This fixing method does not require additional fasteners. When the ground is displaced, the steel strand may experience slight displacement or vibration, but the double hook structure can ensure that the hoisting device is always firmly fixed to the steel strand. Therefore, the hoisting device of this application is easy to install, highly reliable, and inexpensive. Compared with traditional cable clamps, it effectively reduces the cost of laying cables in the air. Attached Figure Description

[0018] The present application will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the structure of a photovoltaic cable laying device in a coal mining subsidence area provided in one embodiment of this application;

[0020] Figure 2 yes Figure 1 A schematic diagram of the hoisting device in the embodiment shown;

[0021] Figure 3 yes Figure 1 A schematic diagram of the sleeve structure in the illustrated embodiment.

[0022] Figure label:

[0023] 100 - Pile body; 200 - Steel strand; 300 - Lifting device; 310 - First steel bar; 311 - First bending segment; 312 - First connecting segment; 320 - Second steel bar; 321 - Second bending segment; 322 - Second connecting segment; 330 - Arc-shaped support; 400 - Sleeve; 500 - Cable. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] In the description of this application, 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", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 of this application.

[0026] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly 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 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] With the scarcity of land for photovoltaic projects, photovoltaic projects combined with coal mining subsidence area remediation are now being promoted. Building photovoltaic projects in coal mining subsidence areas not only reuses abandoned land but also restores the ecological environment of these areas. However, surface displacement caused by coal mining may damage directly buried cables within the photovoltaic area, endangering the safety of electrical equipment and cables. Currently, most photovoltaic projects bury cables directly in the ground; surface displacement caused by coal mining subsidence will pull on these cables, causing damage.

[0031] Therefore, cables in coal mining subsidence areas generally need to be laid in the air, but the cost of laying cables in the air is high, especially the cost of the clamps for fixing the cables.

[0032] Reference Figures 1 to 3 This application provides a photovoltaic cable laying device for coal mining subsidence areas, including a pile body 100, a steel strand 200, and multiple hoisting devices 300.

[0033] The pile 100 is a reinforced concrete structure, embedded in the stable soil layer of the coal mining subsidence area. The embedment depth of the pile 100 exceeds the subsidence influence depth to ensure that the pile 100 remains stable even when the ground surface shifts. The upper part of the pile 100 protrudes above the ground, forming a support structure.

[0034] Steel strand 200 is installed on pile 100. The steel strand 200 is tensioned and installed between multiple piles 100 along the cable 500 laying path, forming an aerial load-bearing system. The tension of the steel strand 200 is adjusted using dedicated tensioning equipment to ensure that the steel strand 200 maintains proper tension during use.

[0035] Multiple lifting devices 300 are installed, and each lifting device 300 is distributed at intervals on the steel strand 200 along the laying direction of the cable 500. The spacing of each lifting device 300 is determined according to factors such as the weight of the cable 500 and the environmental wind load.

[0036] The hoisting device 300 includes a first steel bar 310, a second steel bar 320, and an arc-shaped support body 330. The first steel bar 310 and the second steel bar 320 are arranged to cross each other to form an X-shaped structure. The part of the first steel bar 310 above the intersection is the first bending segment 311, and the part of the first steel bar 310 below the intersection is the first connecting segment 312. The part of the second steel bar 320 above the intersection is the second bending segment 321, and the part of the second steel bar 320 below the intersection is the second connecting segment 322.

[0037] The first bending segment 311 of the first steel bar 310 is bent to form the first hook. The first hook is in a semi-circular bending shape to ensure that the hook can be securely hung on the steel strand 200 without slipping. The bending direction of the first hook is clockwise.

[0038] The second curved segment 321 on the second steel bar 320 bends to form a second hook. The bending direction of the second hook is opposite to that of the first hook, i.e., counterclockwise. The second hook wraps around the outer periphery of the first hook, forming a double locking structure. This design with opposite bending directions ensures that the two hooks are locked together and are not easily loosened even when subjected to external force.

[0039] The hoisting device 300 is fixed to the steel strand 200 by the first hook and the second hook. This fixing method does not require additional fasteners. When the ground shifts, the steel strand 200 may experience slight displacement or vibration, but the double hook structure can ensure that the hoisting device 300 is always firmly fixed to the steel strand 200. Therefore, the hoisting device 300 of this application is easy to install, highly reliable, and low in cost. Compared with traditional cable clamps, it effectively reduces the cost of laying cables 500 in the air.

[0040] The end of the first connecting segment 312 of the first steel bar 310 is connected to one end of the arc-shaped support 330, and the end of the second connecting segment 322 of the second steel bar 320 is connected to the other end of the arc-shaped support 330. The connection method is the same as that of the first connecting segment 312.

[0041] The arc-shaped support 330 is arranged in a downward arc between the first connecting segment 312 and the second connecting segment 322, forming a bracket structure for carrying the cable 500. Specifically, the arc-shaped support 330 adopts a naturally drooping steel wire rope structure. The first connecting segment 312, the second connecting segment 322, and the arc-shaped support 330 enclose a space to accommodate the cable 500, providing good support and protection for the cable 500.

[0042] In some embodiments, the length of the first bending segment 311 is less than the length of the first connecting segment 312, and the length of the second bending segment 321 is less than the length of the second connecting segment 322. This ensures that the space formed by the first connecting segment 312, the second connecting segment 322, and the arc-shaped support 330 to accommodate the cable 500 is large enough, while also ensuring that the center of gravity of the entire hoisting device 300 is in a reasonable position, thus avoiding instability caused by center of gravity shift.

[0043] The wrapping length of the second hook is greater than three-quarters of the arc length of the first hook, meaning the wrapping angle of the second hook over the first hook exceeds 270 degrees. Specifically, in this embodiment, the wrapping angle of the second hook is 300-330 degrees. This large wrapping angle design greatly enhances the locking effect between the two hooks, ensuring that the hooks will not loosen even in strong winds or ground vibrations.

[0044] In some embodiments, the device further includes a sleeve 400 for covering the cable 500 to provide additional protection for the cable 500. The sleeve 400 has a multi-layer structure design. The innermost layer is a flame-retardant layer made of flame-retardant polyvinyl chloride or flame-retardant polyethylene. A waterproof layer is provided outside the flame-retardant layer, made of modified polyurethane or thermoplastic elastomer. The waterproof layer and the flame-retardant layer are bonded together by chemical bonding or mechanical bonding to ensure that the two layers do not separate.

[0045] An abrasion-resistant layer is installed outside the waterproof layer. The abrasion-resistant layer is made of high-strength nylon or polyester fiber material, and the surface of the abrasion-resistant layer is woven or wrapped.

[0046] An opening is provided on one side of the sleeve 400, extending along the axial direction of the sleeve 400 and covering its entire length. A detachable device, including hook and loop fasteners 410, is provided at the opening of the sleeve 400. The hook and loop fasteners 410 consists of hook-and-loop fastener strips and loop-and-loop fastener strips; the hook-and-loop fastener strips are fixed to one edge of the opening, and the loop-and-loop fastener strips are fixed to the other edge of the opening. The hook and loop fasteners are continuously arranged along the opening direction to ensure reliable closure of the entire opening.

[0047] In addition to the Velcro 410, the detachable device can also employ a zipper, snap-on, or strap structure. The zipper structure uses a waterproof zipper, providing convenient opening and closing while maintaining good sealing performance. The snap-on structure uses plastic or metal snaps, achieving reliable closure through the combination of multiple snaps. The strap structure uses an adjustable-length strap, tightening it to close the sleeve 400.

[0048] When surface displacement occurs in the coal mining subsidence area, the piles 100, due to their depth embedded in stable soil layers, maintain a relatively stable position. The steel strands 200 are kept under tension between the piles 100, providing a stable support platform for the hoisting device 300. The hoisting device 300 is securely fixed to the steel strands 200 via a double-hook structure consisting of a first hook and a second hook. Even if the steel strands 200 experience slight displacement or vibration, the hoisting device 300 remains stably fixed. The sleeve 400 provides comprehensive protection for the cable 500.

[0049] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A coal mining subsidence area photovoltaic cable laying device, characterized in that, include: pile body; Steel strands are installed on the pile body; Multiple lifting devices are provided, each spaced apart along the cable laying direction on the steel strand. Each lifting device includes a first steel bar, a second steel bar, and an arc-shaped support. The first and second steel bars are arranged intersectingly. The portion of the first steel bar above the intersection is a first bending segment, and the portion of the first steel bar below the intersection is a first connecting segment. The portion of the second steel bar above the intersection is a second bending segment, and the portion of the second steel bar below the intersection is a second connecting segment. The first bending segment of the first steel bar bends to form a first hook, and the second bending segment of the second steel bar bends... A second hook is formed, which wraps around the outer periphery of the first hook. The bending direction of the first hook is opposite to that of the second hook. The hoisting device is fixed to the steel strand through the first hook and the second hook. The end of the first connecting segment of the first steel bar is connected to one end of the arc-shaped support body, and the end of the second connecting segment of the second steel bar is connected to the other end of the arc-shaped support body. The arc-shaped support body is arranged to arch downward between the first connecting segment and the second connecting segment. The first connecting segment, the second connecting segment, and the arc-shaped support body enclose a space to accommodate the cable.

2. The coal mining subsidence area photovoltaic cable laying device according to claim 1, characterized in that: The length of the first curved segment is less than the length of the first connecting segment, and the length of the second curved segment is less than the length of the second connecting segment.

3. The coal mining subsidence area photovoltaic cable laying device according to claim 1, characterized in that: The wrapping length of the second hook is greater than three-quarters of the arc length of the first hook.

4. The coal mining subsidence area photovoltaic cable laying device according to claim 1, characterized in that: The arc-shaped support is a steel wire rope structure.

5. The coal mining subsidence area photovoltaic cable laying device according to claim 1, characterized in that: It also includes a sleeve for covering the cable.

6. A coal extraction subsidence area photovoltaic cable laying apparatus according to claim 5, characterised in that: The sleeve has a flame-retardant layer.

7. A coal extraction subsidence area photovoltaic cable laying apparatus according to claim 6, characterised in that: The sleeve has a waterproof layer, which is located outside the flame-retardant layer.

8. A coal extraction subsidence area photovoltaic cable laying apparatus according to claim 7, characterised in that: The sleeve also has a wear-resistant layer, which is located outside the waterproof layer.

9. The coal mining subsidence photovoltaic cable laying device according to claim 5, characterized in that: An opening is provided on one side of the sleeve, and the opening of the sleeve is provided with a detachable device.

10. The coal mining subsidence photovoltaic cable laying device according to claim 9, characterized in that: The detachable device includes Velcro.

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