A cable support structure for steep mountains

Abstract

This utility model relates to the field of cable laying technology, specifically to a cable support structure for steep mountains. It includes multiple foundation piles spaced along the sidewall of the mountain and fixed by anchor bolts. Each foundation pile is connected to a telescopic adjustment assembly, which includes an adjustable telescopic rod and a load-bearing plate at the end of the telescopic rod. Multiple load-bearing plates form a continuous arc support body through a hinge mechanism. The side of the load-bearing plate away from the telescopic rod is arc-shaped, and adjacent load-bearing plates are rotatable. A hollow, elastically deformable pipe is fixed to the arc-shaped side of the load-bearing plate for cable passage. A fixed base containing a support plate and pre-embedded bottom piles is provided at the bottom of the mountain, hinged to the lowest load-bearing plate. This structure, through telescopic rod adjustment and load-bearing plate hinges, forms a continuous arc support that conforms to the cable, adapting to curved underground paths, dispersing stress, preventing swaying, adapting to the uneven terrain of the mountain, and ensuring the safe operation of the cable.

Description

Technical Field

[0001] This utility model relates to the field of cable laying technology, specifically to a cable support structure for steep mountains. Background Technology

[0002] In mountain photovoltaic power station projects, the collector cables play a crucial role in collecting and transmitting the electrical energy generated by the photovoltaic panels to the combiner box and the booster station. Since photovoltaic panels are usually installed on the top of mountains or slopes, and supporting equipment such as combiner boxes and cable wells are mostly buried underground to avoid interference from the surface environment (such as rainwater erosion and external impact), the laying path of the collector cable needs to extend from the side of the mountain (steep areas) to the ground, forming a transition section "from overhead / semi-overhead to underground". During this process, due to the drastic changes in elevation of the steep mountain slope, there is a significant height difference between the photovoltaic panel installation location and the burial point of the underground equipment. The cable itself is heavy, and in the long-distance laying from the top of the mountain to the bottom of the mountain, in order to avoid the concentration of gravity caused by the cable being suspended in some areas, and the excessively long path or conflict with the mountain surface caused by straight laying, the cable needs to be bent along the side of the mountain to adapt to the vertical or steep terrain, and finally enter the ground in a curved manner. The continuous arc-shaped support from the top of the mountain to the bottom of the mountain can distribute the weight of the cable, shorten the overhead section, and reduce the risk.

[0003] In existing technologies, such as the Chinese utility model patent with authorization announcement number CN217824184U, a cable laying structure suitable for steep mountain terrain is disclosed. This structure mainly relies on horizontal supports and rectangular troughs to form a linear support path, with its core design focusing on accommodating horizontal or slightly inclined cable laying. However, for cables requiring bending into the ground, this structure has the following shortcomings: First, it cannot adapt to bending paths. The horizontal supports and rectangular troughs are rigid linear structures that can only fix the cable along a straight line, failing to form a close-fitting support surface with the cable's bending trajectory. This results in gaps between the cable and the support structure at the bend, making it prone to displacement due to swaying. Second, it leads to stress concentration. If the cable lacks close-fitting support at the bend, it will form "point contact" with the linear supports, significantly increasing the local stress on the inner (compression) and outer (tension) sides of the bend. Long-term use may cause the cable insulation layer to crack and the core wire to break, affecting operational safety. Therefore, for power line cables requiring bending into the ground in steep mountain environments, there is an urgent need for a support structure that can provide close-fitting bending support for the cable and adapt to various terrain changes. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model aims to provide a cable support structure for steep mountains, which can provide close bending support for cables and adapt to various terrain changes.

[0005] To solve the above problems, the technical solution provided by this utility model is: a cable support structure for steep mountains, comprising: Multiple foundation piles are spaced out along the sidewall of the mountain and fixed inside the sidewall of the mountain by anchor bolts; The telescopic adjustment assembly includes a telescopic rod connected to each of the foundation piles and a force-bearing plate disposed at the telescopic end of the telescopic rod, wherein the length of the telescopic rod is adjustable; The continuous arc support body is composed of multiple force-bearing plates connected in sequence by a hinge mechanism. The side of the force-bearing plate away from the telescopic rod is arc-shaped, and there is rotational freedom between adjacent force-bearing plates. A pipe is fixed to the side of the multiple force-bearing plates away from the telescopic rod. The pipe can elastically deform and fit into the force-bearing plates. The pipe is hollow inside to allow cables to pass through and be laid. A fixed base is located at the bottom of the mountain and hinged to the lowest load-bearing plate. The fixed base includes a support plate and a bottom pile. The bottom pile is pre-embedded at the bottom of the mountain, and the support plate is fixed on the bottom pile.

[0006] The principle of this scheme is as follows: anchor piles are fixed to the sidewall of the mountain using anchor bolts, providing a stable installation foundation for the entire support structure; the length of the telescopic rods is adjusted according to the concave and convex shape of the sidewall of the mountain, driving the load-bearing plates to move. Combined with the rotational freedom between adjacent load-bearing plates, multiple load-bearing plates form a continuous arc support through a hinge mechanism to accommodate the curved path of the cable from the top of the mountain to the bottom; elastically deformable pipes are fixed to the arc side of the load-bearing plates and fit against them, bending synchronously with the shape of the arc support. When the cable passes through the inside of the pipe, it can make close contact with the inner wall of the pipe, achieving full-section fitting support; the fixed base is pre-embedded in the bottom of the mountain using bottom piles, providing stable support for the lowest load-bearing plate and ensuring the stress balance of the overall structure.

[0007] The beneficial effects of this solution are as follows: A continuous arc support structure can be formed by adjusting the telescopic rod and hinged with the load-bearing plate, creating a bending path that closely fits the cable, solving the problem of gaps between existing linear supports and bending cables, and preventing cable swaying and displacement. The adjustable length of the telescopic rod allows the structure to adapt to the uneven terrain of different steep mountains, improving environmental adaptability. The elastically deformable pipe bends synchronously with the arc support structure, closely fitting the cable, dispersing the internal and external stresses of the cable's bending section, reducing localized stress concentration, and protecting the cable insulation and core wires. Furthermore, the fixed base provides bottom support for the overall structure, combined with the anchoring effect of the foundation piles, ensuring the stability of the support structure in steep terrain.

[0008] Furthermore, the telescopic rod includes an inner sleeve rod and an outer sleeve rod, which are connected by a threaded connection to achieve length adjustment. One end of the outer sleeve rod is connected to the foundation pile, and one end of the inner sleeve rod is connected to the load-bearing plate. The threaded adjustment structure is simple and reliable, easy to operate on site, and can precisely control the length of the telescopic rod, ensuring the positional accuracy of the load-bearing plate, thereby ensuring the shape accuracy of the continuous arc support.

[0009] Furthermore, the outer sleeve is fixedly connected to the foundation pile by bolts. The bolted connection facilitates the installation, maintenance, and replacement of the structure, while ensuring the connection strength between the expansion joint and the foundation pile, preventing it from detaching under stress.

[0010] Furthermore, the pipe is fixed to the side of the load-bearing plate away from the telescopic rod by adhesive or screws.

[0011] Furthermore, the hinge mechanism is a rotary hinge, located at the side connection of adjacent load-bearing plates. The rotary hinge has a compact structure and flexible rotation, providing stable rotational freedom for adjacent load-bearing plates, ensuring that the load-bearing plates smoothly form a continuous arc when the telescopic rod is adjusted, while also guaranteeing the connection strength at the hinge.

[0012] Furthermore, the inner wall of the pipe is provided with an elastic buffer layer, which is continuously arranged along the length of the pipe, and the thickness of the elastic buffer layer is compressible and adjustable. The elastic buffer layer can further absorb the stress during cable bending, reduce the hard friction between the cable and the inner wall of the pipe, and its adjustable thickness allows it to accommodate cables of different diameters, improving the versatility of the structure. Furthermore, the contact surface between the stress plate and the pipe is provided with an anti-detachment groove, and a corresponding limiting protrusion is provided on the outer side of the pipe. The cooperation between the anti-detachment groove and the limiting protrusion can prevent the pipe from falling off the stress plate during stress or deformation, thereby enhancing the connection stability between the pipe and the arc support. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; The reference numerals in the accompanying drawings of the instruction manual include: 1. Mountain, 2. Photovoltaic panel, 3. Frame, 4. Anchor bolt, 5. Foundation pile, 6. Outer sleeve rod, 7. Inner sleeve rod, 8. Force plate, 9. Rotary hinge, 10. Support plate, 11. Bottom pile, 12. Pipe, 13. Cable. Detailed Implementation

[0014] The following detailed description illustrates the specific implementation method: The basic implementation examples are as follows: Figure 1 As shown, a cable support structure for steep mountains includes: Multiple foundation piles 5 are spaced along the side wall of the mountain 1 and fixed inside the side wall of the mountain 1 by anchor bolts 4; The telescopic adjustment assembly includes a telescopic rod connected to each of the foundation piles 5 and a force-bearing plate 8 disposed at the telescopic end of the telescopic rod, the length of which is adjustable; The continuous arc support body is composed of multiple force-bearing plates 8 connected in sequence by a hinge mechanism. The side of the force-bearing plate 8 away from the telescopic rod is arc-shaped, and there is rotational freedom between adjacent force-bearing plates 8. Pipe 12 is fixed to the side of the multiple force plates 8 away from the telescopic rod. Pipe 12 can be elastically deformed and fits into the force plates 8. Pipe 12 is hollow inside, allowing the cable 13 to pass through and be laid. A fixed base is provided at the bottom of the mountain body 1 and hinged to the lowest load-bearing plate 8. The fixed base includes a support plate 10 and a bottom pile 11. The bottom pile 11 is pre-embedded at the bottom of the mountain body 1, and the support plate 10 is fixed on the bottom pile 11.

[0015] This embodiment is applied to the scenario of laying cable 13 on the side wall of mountain 1. The top of mountain 1 is equipped with photovoltaic panel 2 and frame 3. Cable 13 needs to be extended from the top of the mountain along the side wall of mountain 1 to the foot of the mountain and into the ground.

[0016] Along the steep section of the sidewall of mountain 1, drilling holes at 5-8 meter intervals creates installation holes. The drilling depth is set to 1.5-2.5 meters based on the rock hardness of mountain 1. 20mm diameter threaded steel anchor rods 4 are inserted into the installation holes and anchored using high-strength cement mortar. A 100mm threaded section is left pre-drilled at the exposed end of the anchor rod 4. The foundation pile 5 is a precast C30 reinforced concrete component. A through hole matching the anchor rod 4 is pre-drilled on the side of the foundation pile 5 closest to the sidewall of mountain 1. The foundation pile 5 is secured to the exposed end of the anchor rod 4 with nuts, ensuring a tight fit between the foundation pile 5 and the sidewall of mountain 1.

[0017] The telescopic rod adopts a threaded adjustment structure, including an outer rod 6 and an inner rod 7. The inner wall of the outer rod 6 is threaded, and the outer wall of the inner rod 7 is threaded to match the outer rod 6. The total length of the telescopic rod is adjusted by screwing the threads together. A flange is welded to the end of the outer rod 6 away from the inner rod 7, and it is fixedly connected to the foundation pile 5 by four sets of M16 pre-embedded bolts. The end of the inner rod 7 away from the outer rod 6 is connected to the load-bearing plate 8 by welding.

[0018] The load-bearing plate 8 is made of Q235 steel plate by stamping. The side of the load-bearing plate 8 away from the inner sleeve rod 7 is an arc-shaped surface with a 5mm rounded corner. Hinge mounting holes are reserved on both sides of the load-bearing plate 8. Adjacent load-bearing plates 8 are connected by a rotating hinge 9, which is made of 304 stainless steel and includes two connecting plates with shaft holes and a through shaft. The connecting plates are welded to the sides of the adjacent load-bearing plates 8 respectively, and free rotation is achieved through the through shaft.

[0019] Adjust the length of each telescopic rod sequentially from the bottom of hill 1 upwards: Rotate the inner sleeve rod 7 with a wrench to change its engagement depth with the outer sleeve rod 6, causing the force-bearing plate 8 to move radially along hill 1. Utilize the rotational freedom of the rotating hinge 9 to sequentially connect the arc-shaped surfaces of each force-bearing plate 8, forming a continuous arc-shaped support surface (the radius of the arc can be adjusted according to the bending requirements of cable 13). After adjustment, install a lock nut at the connection between the outer sleeve rod 6 and the inner sleeve rod 7 to fix the length.

[0020] The bottom pile 11 is a spiral steel pile, which is pre-embedded 2.5 meters below the ground surface at the bottom of the mountain 1 by a hydraulic pile driver. A Q235 steel plate is welded to the top of the bottom pile 11 as a support plate 10. The end of the support plate 10 away from the bottom pile 11 is hinged to the lowest load-bearing plate 8 through a rotating hinge 9, forming the bottom load-bearing support point of the entire support structure.

[0021] Pipe 12 is made of high-density polyethylene corrugated pipe, which can adapt to the curvature of the stress plate 8. A limiting protrusion (8mm high) is set at 500mm intervals on the outer side of pipe 12, and anti-disengagement groove (10mm deep) is machined on the corresponding position on the curvature of the stress plate 8. The initial positioning is achieved by the cooperation of the protrusion and the groove.

[0022] The pipe 12 is fixed to the load-bearing plate 8 by adhesive bonding: polyurethane structural adhesive is applied to the arc-shaped surface of the load-bearing plate 8, and the pipe 12 is then bonded to it. Alternatively, screw fixing can be used, with self-tapping screws (5mm in diameter) penetrating the side wall of the pipe 12 and fixing it to the load-bearing plate 8 every 300mm along the axial direction of the pipe 12.

[0023] The inner wall of the pipe 12 is pre-installed with a 10mm thick silicone elastic buffer layer. The buffer layer is continuously distributed along the length of the pipe 12 and can adapt to cables 13 of different diameters through compression deformation.

[0024] The specific working process is as follows: After cable 13 is led out from the combiner box of photovoltaic panel 2 on the mountaintop, it is inserted into pipe 12 and laid downwards along the arc-shaped path of continuous arc support, finally entering the ground from the outlet of pipe 12 at the foot of the mountain. During the laying process: the silicone elastic buffer layer is in close contact with the outer wall of cable 13, absorbing the radial pressure generated by the weight of cable 13; the continuous arc support surface keeps cable 13 in a close support state at all times, the compressive stress on the inner side of the bending section is transferred to the stress plate 8 through pipe 12, and the tensile stress on the outer side is offset by the toughness of pipe 12 itself; when the mountain 1 undergoes a slight displacement, the telescopic rod can compensate through a slight extension and contraction, and the rotating hinge 9 adjusts the angle synchronously to ensure that the fit between the support structure and cable 13 remains unchanged.

[0025] The above are merely embodiments of this utility model. This utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are able to access all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims. The specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A cable support structure for steep mountains, characterized in that, include: Multiple foundation piles are spaced out along the sidewall of the mountain and fixed inside the sidewall of the mountain by anchor bolts; The telescopic adjustment assembly includes a telescopic rod connected to each of the foundation piles and a force-bearing plate disposed at the telescopic end of the telescopic rod, wherein the length of the telescopic rod is adjustable; The continuous arc support body is composed of multiple force-bearing plates connected in sequence by a hinge mechanism. The side of the force-bearing plate away from the telescopic rod is arc-shaped, and there is rotational freedom between adjacent force-bearing plates. A pipe is fixed to the side of the multiple force-bearing plates away from the telescopic rod. The pipe can elastically deform and fit into the force-bearing plates. The pipe is hollow inside to allow cables to pass through and be laid. A fixed base is located at the bottom of the mountain and hinged to the lowest load-bearing plate. The fixed base includes a support plate and a bottom pile. The bottom pile is pre-embedded at the bottom of the mountain, and the support plate is fixed on the bottom pile.

2. The cable support structure for steep mountains according to claim 1, characterized in that: The telescopic rod includes an inner sleeve rod and an outer sleeve rod, which are connected by a threaded connection to achieve length adjustment. One end of the outer sleeve rod is connected to the foundation pile, and one end of the inner sleeve rod is connected to the load-bearing plate.

3. The cable support structure for steep mountains according to claim 2, characterized in that: The outer sleeve is fixedly connected to the foundation pile by bolts.

4. The cable support structure for steep mountains according to claim 1, characterized in that: The pipe is fixed to the side of the load-bearing plate away from the telescopic rod by adhesive or screws.

5. The cable support structure for steep mountains according to claim 1, characterized in that: The hinge mechanism is a rotary hinge, located at the side connection of adjacent load-bearing plates.

6. The cable support structure for steep mountains according to claim 1, characterized in that: The inner wall of the pipe is provided with an elastic buffer layer, which is continuously arranged along the length of the pipe, and the thickness of the elastic buffer layer can be compressed and adjusted.

7. The cable support structure for steep mountains according to claim 1, characterized in that: The contact surface between the stress plate and the pipe is provided with an anti-detachment groove, and a limiting protrusion adapted to the anti-detachment groove is provided on the outside of the pipe.

Images