A lightweight high strength overhead insulated cable

Abstract

The application discloses a light high-strength overhead insulated cable and relates to the technical field of overhead insulated cables, which comprises an overhead insulated cable assembly, and a light high-strength assembly is arranged on the outer surface of the overhead insulated cable assembly; the light high-strength assembly comprises a plurality of first support frames, and first tripods are fixedly connected between the opposite outer surfaces of the plurality of first support frames; the light high-strength overhead insulated cable is characterized in that the first support frame, the second support frame, the first tripod, the second tripod and the third tripod in the light high-strength assembly all adopt a frame type hollow structure, the material consumption and the overall weight are reduced, the geometric non-deformability of the triangle is utilized to disperse the load, local stress concentration is avoided, the arch-shaped frame adopts an arc-shaped design, the impact of falling objects, the extrusion of strong winds and other external forces can be transmitted to the support system along the arc-shaped surface, and the impact resistance is further improved.

Description

Technical Field

[0001] This invention relates to the field of overhead insulated cable technology, specifically to a lightweight, high-strength overhead insulated cable. Background Technology

[0002] Overhead insulated cables are power cables with copper and aluminum as conductive cores, wrapped with polyethylene, polyvinyl chloride and other insulating materials. They are specifically designed for overhead installation and can safely transmit electrical energy in an overhead environment while isolating the conductor from the outside world. Their working principle is to transmit current through the internal conductive core, while the external insulation layer, shielding layer, protective sheath and other structures perform the functions of insulation, anti-interference and anti-corrosion, respectively, to ensure the operation of the cable in an outdoor overhead environment.

[0003] In practical applications, existing overhead insulated cables are typically laid over long spans, especially in suburban areas, rural areas, and mountainous regions, where the spans are often even longer. Furthermore, most existing cables use solid conductors and traditional support structures, resulting in significant weight. To prevent the cables from sagging beyond safe limits due to their own weight, considerable tension is applied to both ends, further increasing the stress on the cables. In severe weather, the mechanical load on the cables increases dramatically. Strong winds can cause violent swaying, generating lateral wind loads and wind-induced vibrations. Accumulated ice and snow significantly increase the cable weight, creating additional ice and snow loads. In addition, external impacts such as fallen trees, accidental vehicle collisions, and accidental contact with construction tools can also cause instantaneous impact forces on the cables. Given the limited mechanical strength and insufficient resistance to external stresses of existing cables, conductor breakage is highly likely under these complex loads.

[0004] Therefore, we propose a lightweight, high-strength overhead insulated cable to address the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a lightweight, high-strength overhead insulated cable to solve the problem mentioned in the background art that the mechanical load on existing overhead insulated cables increases sharply when encountering severe weather and external impacts, resulting in the cables breaking due to limited mechanical strength and insufficient resistance to external stress.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lightweight, high-strength overhead insulated cable, comprising an overhead insulated cable assembly, wherein a lightweight, high-strength component is disposed on the outer surface of the overhead insulated cable assembly, the lightweight, high-strength component comprising a plurality of first support frames, a first triangular frame fixedly connected between the opposite outer surfaces of the plurality of first support frames, a second support frame fixedly connected on both sides of the outer surfaces of the plurality of first support frames, the plurality of second support frames being grouped in pairs, a second triangular frame fixedly connected between the outer surfaces of each group of second support frames, a third triangular frame fixedly connected near one edge of the outer surfaces of each group of second support frames, and an arched frame fixedly connected between the other outer surfaces of each group of second support frames.

[0007] Preferably, a plurality of evenly arranged spheres are fixedly connected to the outer surfaces of the plurality of arched frames, and the overhead insulated cable assembly includes a conductor, the outer surface of which is fixedly fitted with an inner shielding layer.

[0008] Preferably, an insulating layer is fixedly sleeved on the outer surface of the inner shielding layer, a semi-conductive outer shielding layer is fixedly sleeved on the outer surface of the insulating layer, and a copper strip shield is fixedly sleeved on the outer surface of the semi-conductive outer shielding layer.

[0009] Preferably, the outer surface of the copper strip shield is fixedly fitted with a protective sleeve, and one side of the outer surface of the plurality of first support frames is fixedly connected to the outer surface of the protective sleeve, and one side of the outer surface of the plurality of second support frames is fixedly connected to the outer surface of the protective sleeve.

[0010] Preferably, a connecting component is provided on the other outer surface of the overhead insulated cable assembly. The connecting component includes a connecting cylinder. One end of the conductor is fixedly connected to the inner wall of one side of the connecting cylinder. A protective layer is fixedly sleeved on the outer surface of the connecting cylinder, and a fixed shaft is movably embedded in the inner wall of the connecting cylinder.

[0011] Preferably, a turbine is fixedly sleeved on the outer surface of the fixed shaft, and a worm gear is movably embedded between the relative inner walls of the protective layer, with the outer surface of the turbine meshing with the outer surface of the worm gear.

[0012] Preferably, a rotary knob is fixedly connected to one end of the worm gear, a first helical column is fixedly connected to one side of the outer surface of the turbine, one end of the protective layer is fixedly connected to one end of the protective sleeve, and one end of the connecting cylinder is fixedly connected to one end of the inner shielding layer.

[0013] Preferably, a second spiral column is spirally connected to the outer surface of the first spiral column, and the outer surface of the second spiral column is provided with a plurality of uniformly arranged grooves.

[0014] Preferably, an inclined plate is fixedly connected to one side of the outer surface of the second spiral column, and a plurality of uniformly arranged limiting blocks are fixedly connected to the inner wall of the other side of the communicating cylinder.

[0015] Preferably, the inner walls of the plurality of grooves slide against the outer surfaces of the plurality of limiting blocks, and a clamp is fixedly connected to one inner wall of the communicating cylinder.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This device incorporates lightweight, high-strength components. The first support frame, second support frame, first triangular frame, second triangular frame, and third triangular frame all adopt a hollow frame structure. This reduces material usage and overall weight while utilizing the geometric indeformability of triangles to distribute loads and avoid localized stress concentration. Furthermore, the arched frame adopts an arc design, which can transfer impacts from falling objects, strong winds, and other external forces to the support system along the arc surface, further enhancing impact resistance. This solves the problem in existing technologies where overhead insulated cables experience a sharp increase in mechanical load when encountering severe weather and external impacts, leading to breakage due to limited mechanical strength and insufficient resistance to external stress.

[0018] 2. This device optimizes the connection process by setting up connection components. When connecting an external cable to an overhead insulated cable assembly, simply insert the conductive part of the external cable into the connecting cylinder and rotate the knob clockwise to drive the worm gear to rotate. The worm gear drives the turbine drive, which in turn drives the first helical column to rotate. The first helical column pushes the second helical column to move, and finally, the inclined plate squeezes the clamp to achieve a tight fixation and conductive connection of the conductor of the overhead insulated cable assembly, thereby simplifying the connection operation and improving the convenience of installation and maintenance.

[0019] 3. This device eliminates the uneven electric field on the conductor surface by setting up an overhead insulated cable assembly. The conductor is covered with an inner shielding layer of semi-conductive material, and the outer semi-conductive shielding layer makes the electric field of the insulation layer and copper tape shielding uniform. The copper tape shielding confines the electromagnetic field inside the cable to avoid internal and external interference. The three layers of shielding ensure the effectiveness of insulation. At the same time, the conductor is made of high-purity copper and aluminum alloy to reduce current transmission loss. The insulation layer is made of cross-linked polyethylene, and the protective sheath is made of polyvinyl chloride, which not only ensures insulation performance but also improves resistance to environmental corrosion and extends the electrical performance stability period. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a lightweight, high-strength overhead insulated cable according to the present invention.

[0021] Figure 2 This is a perspective view of the conductor portion structure of a lightweight, high-strength overhead insulated cable according to the present invention.

[0022] Figure 3 This is a three-dimensional cross-sectional view of the protective sheath structure of a lightweight, high-strength overhead insulated cable according to the present invention.

[0023] Figure 4 This is a perspective view of a lightweight, high-strength component of a lightweight, high-strength overhead insulated cable according to the present invention.

[0024] Figure 5 This is a perspective view of the protective layer portion of a lightweight, high-strength overhead insulated cable according to the present invention.

[0025] Figure 6 This is a three-dimensional cross-sectional view of the connecting tube portion of a lightweight, high-strength overhead insulated cable according to the present invention.

[0026] Figure 7 This is a perspective view of the turbine section of a lightweight, high-strength overhead insulated cable according to the present invention.

[0027] Figure 8 This is a perspective view of the worm gear portion of a lightweight, high-strength overhead insulated cable according to the present invention.

[0028] Figure 9 This is a three-dimensional cross-sectional view of the clamp portion structure of a lightweight, high-strength overhead insulated cable according to the present invention.

[0029] In the picture:

[0030] 1. Overhead insulated cable assembly; 101. Conductor; 102. Inner shielding layer; 103. Insulation layer; 104. Semi-conductive outer shielding layer; 105. Copper tape shielding; 106. Protective sleeve; 2. Lightweight high-strength assembly; 201. First support frame; 202. First tripod; 203. Second support frame; 204. Second tripod; 205. Third tripod; 206. Arch frame; 207. Sphere; 3. Connecting assembly; 301. Connecting cylinder; 302. Protective layer; 303. Fixed shaft; 304. Turbine; 305. Worm rod; 306. Rotary knob; 307. First helical column; 308. Second helical column; 309. Inclined plate; 310. Clamp; 311. Slide groove; 312. Limiting block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-9The present invention provides a technical solution: a lightweight high-strength overhead insulated cable, comprising an overhead insulated cable assembly 1, a lightweight high-strength component 2 disposed on the outer surface of the overhead insulated cable assembly 1, the lightweight high-strength component 2 comprising a plurality of first support frames 201, a first triangular frame 202 fixedly connected between the opposite outer surfaces of the plurality of first support frames 201, a second support frame 203 fixedly connected on both sides of the outer surfaces of the plurality of first support frames 201, the plurality of second support frames 203 being grouped in pairs, a second triangular frame 204 fixedly connected between the outer surfaces of each group of second support frames 203, a third triangular frame 205 fixedly connected near one edge of the outer surfaces of each group of second support frames 203, an arched frame 206 fixedly connected between the other outer surfaces of each group of second support frames 203, and a plurality of uniformly arranged spheres 207 fixedly connected to the outer surfaces of the plurality of arched frames 206. The overhead insulated cable assembly 1 comprises a conductor 101, and an inner shielding layer 102 is fixedly sleeved on the outer surface of the conductor 101.

[0033] In this embodiment, before use, the integrity of each core component of the overhead insulated cable assembly 1 must be checked one by one. Special attention should be paid to ensuring that the lightweight, high-strength components 2 on the outer surface of the overhead insulated cable assembly 1 are free from breakage, deformation, or detachment. Simultaneously, the connecting components 3 should be checked to confirm that all components are functioning normally. Multiple first support frames 201 in the lightweight, high-strength components 2 are fixedly connected by first triangular frames 202, forming a ring-shaped support frame. The triangle's geometric indeformability allows for the even distribution of the overhead insulated cable assembly 1's own weight and wind load onto each first support frame 201. When the overhead insulated cable assembly 1 is subjected to a vertically downward load, the load is transferred to the first support frames 201 through the protective sleeve 106, and then distributed to all first support frames 201 through the first triangular frames 202, thus uniformly reducing the load borne by each first support frame 201 and improving the overall load-bearing capacity. The load-bearing capacity of the support system is enhanced. At the same time, the setting of the first triangular frame 202 can also enhance the radial stiffness of the first support frame 201 and prevent the first support frame 201 from bending and deforming due to lateral wind load. Each group of second support frames 203, which is fixedly connected to both sides of the first support frame 201, is connected by the second triangular frame 204 and the third triangular frame 205, further strengthening the support structure's resistance to lateral deformation and resisting cable swaying caused by crosswinds. The arched frame 206, which is fixed to the outer surface of the other side of each group of second support frames 203, adopts an arc design. When subjected to external pressures such as falling object impact and strong wind compression, the impact force will first act on the arc surface of the arched frame 206, and then decompose into radial and axial components along the arc surface. The radial component is borne by the second support frame 203, while the axial component is dispersed along the length of the overhead insulated cable assembly 1, greatly reducing local stress.Meanwhile, the arched frame 206 is a hollow frame structure, which reduces weight compared to a solid structure, balancing strength and lightweight. Furthermore, the first support frame 201, the second support frame 203, the first tripod 202, the second tripod 204, the third tripod 205, and the arched frame 206 all adopt a frame structure. This minimizes material usage and reduces the overall weight of the assembly while ensuring structural strength. Triangles have the characteristic of being non-deformable. In the lightweight, high-strength assembly 2, the first tripod 202, the second tripod 204, and the third tripod 205 extensively utilize tripod structures. When the overhead insulated cable assembly 1 is subjected to external pressure and impact, the arched frame 206 can withstand the external force first. The external force is transferred to the entire support structure, thus protecting the overhead insulated cable assembly 1 from damage. The first support frame 201 and the second support frame 203 support the overhead insulated cable assembly 1 from different angles, forming a multi-support point support system. This multi-support point design can evenly distribute the load on the cable to each support point, and the load borne by each support point is relatively small, thereby improving the load-bearing capacity and anti-damage ability of the entire cable structure. At the same time, the exterior of the lightweight and high-strength assembly 2 has a circular wave shape, and its interior is hollow. During the power transmission process, the conductor 101 will continuously generate heat due to resistance. The hollow internal structure forms a through-hole structure that penetrates the overhead insulated cable assembly 1. The longitudinal ventilation channel along the length of the overhead insulated cable assembly 1 allows air to flow freely, directly carrying away the heat from the overhead insulated cable assembly 1. The wave-like shape formed by multiple arched frames 206 on the outside increases the contact area between the lightweight high-strength assembly 2 and the air, increasing the heat dissipation area and thus increasing the efficiency of heat radiation and convection to the outside air. Simultaneously, the spheres 207, evenly distributed in a raised shape on the outer surface of the arched frames 206, create an uneven lattice structure on the outer surface of the lightweight high-strength assembly 2. In cold, rainy, or snowy environments, snowflakes falling on the surface of the arched frames 206 can disrupt the continuity of snow accumulation. This device, through the installation of the lightweight high-strength assembly 2, effectively... In component 2, the first support frame 201, the second support frame 203, the first triangular frame 202, the second triangular frame 204, and the third triangular frame 205 all adopt a frame-type hollow structure. This reduces material usage and overall weight while utilizing the geometric indeformability of triangles to distribute loads and avoid localized stress concentration. Furthermore, the arched frame 206 employs an arc-shaped design, which can transfer impacts from falling objects, strong winds, and other external forces along the arc surface to the support system, further enhancing impact resistance. This solves the problem in existing technologies where overhead insulated cables experience a sharp increase in mechanical load when encountering severe weather and external impacts, leading to breakage due to limited mechanical strength and insufficient resistance to external stress.

[0034] like Figure 1-9As shown, a connecting component 3 is provided on the outer surface of the other side of the overhead insulated cable assembly 1. The connecting component 3 includes a connecting cylinder 301. One end of the conductor 101 is fixedly connected to the inner wall of one side of the connecting cylinder 301. A protective layer 302 is fixedly sleeved on the outer surface of the connecting cylinder 301. A fixed shaft 303 is movably embedded in the inner wall of the connecting cylinder 301. A turbine 304 is fixedly sleeved on the outer surface of the fixed shaft 303. A worm gear 305 is movably embedded between the opposing inner walls of the protective layer 302. The outer surface of the turbine 304 meshes with the outer surface of the worm gear 305. A rotary knob 306 is fixedly connected to one end of the worm gear 305. A first screw is fixedly connected to the outer surface of one side of the turbine 304. One end of the spiral column 307 and the protective layer 302 are fixedly connected to one end of the protective sleeve 106. One end of the connecting cylinder 301 is fixedly connected to one end of the inner shielding layer 102. The outer surface of the first spiral column 307 is spirally connected to the second spiral column 308. The outer surface of the second spiral column 308 is provided with a plurality of evenly arranged sliding grooves 311. One side of the outer surface of the second spiral column 308 is fixedly connected to the inclined plate 309. The inner wall of the other side of the connecting cylinder 301 is fixedly connected to a plurality of evenly arranged limiting blocks 312. The inner walls of the plurality of sliding grooves 311 slide against the outer surfaces of the plurality of limiting blocks 312 respectively. One side of the inner wall of the connecting cylinder 301 is fixedly connected to the clamp 310.

[0035] In this embodiment, when it is necessary to connect the overhead insulated cable assembly 1 to an external cable, the conductive part of the external cable end is inserted into the inner wall of one end of the connecting cylinder 301, ensuring that the conductive part is in close contact with the inner wall of the connecting cylinder 301. The connecting cylinder 301 is made of conductive material. At this time, the outer surface of the conductive part of the external cable is in contact with the inner wall of the clamp 310. Then, the rotary knob 306 is rotated clockwise, and the rotary knob 306 will drive the worm gear 305 fixedly connected to it to rotate. The two ends of the worm gear 305 will rotate along the inner wall of the protective layer 302, and at the same time, due to the worm... The rod 305 meshes with the turbine 304, which rotates with the rod 305 and drives the first helical column 307 to rotate synchronously. The first helical column 307 and the second helical column 308 are connected by threads, and the groove 311 on the outer surface of the second helical column 308 slides with the limiting block 312 on the inner wall of the connecting cylinder 301 to limit the rotation of the second helical column 308. Therefore, when the first helical column 307 rotates, the second helical column 308 moves axially into the connecting cylinder 301, pushing the inclined plate 309 to squeeze the chuck 310. After being squeezed, the chuck 310 contracts and tightly wraps around the chuck. The conductor 101 secures and electrically connects the two cable segments. When the clamp 310 clamps the external conductor, if the cable experiences a reverse force due to vibration and thermal expansion / contraction, attempting to loosen the clamp 310, this force is transmitted to the turbine 304. The turbine 304 and the worm gear 305 have unidirectional self-locking properties, preventing the turbine 304 from driving the worm gear 305 to rotate in the opposite direction. The relative positions of the first helical column 307 and the second helical column 308 remain fixed, ensuring that the clamping force of the clamp 310 is not weakened by external disturbances. This device optimizes [the process] by incorporating the connecting component 3. In the connection process, when connecting the external cable to the overhead insulated cable assembly 1, simply insert the conductive part of the external cable into the connecting cylinder 301, and rotate the rotary knob 306 clockwise to drive the worm gear 305 to rotate. The worm gear 305 will drive the turbine 304 to rotate, thereby driving the first spiral column 307 to rotate. The first spiral column 307 pushes the second spiral column 308 to move, and finally, the inclined plate 309 squeezes the clamp 310 to achieve a tight fixation and conductive connection of the conductor 101 of the overhead insulated cable assembly 1, thereby simplifying the connection operation and improving the convenience of installation and maintenance.

[0036] like Figure 1-9 As shown, an insulating layer 103 is fixedly sleeved on the outer surface of the inner shielding layer 102, a semi-conductive outer shielding layer 104 is fixedly sleeved on the outer surface of the insulating layer 103, a copper strip shield 105 is fixedly sleeved on the outer surface of the semi-conductive outer shielding layer 104, a protective sleeve 106 is fixedly sleeved on the outer surface of the copper strip shield 105, one side of the outer surface of the plurality of first support frames 201 is fixedly connected to the outer surface of the protective sleeve 106, and one side of the outer surface of the plurality of second support frames 203 is fixedly connected to the outer surface of the protective sleeve 106.

[0037] In this embodiment, conductor 101 is made of a highly conductive material, using high-purity copper and aluminum alloy to effectively reduce losses during current transmission. During transmission, the inner shielding layer 102, made of a semi-conductive material, eliminates the uneven electric field on the surface of conductor 101, preventing excessively high local field strength from causing the insulation layer 103 to break down. The insulation layer 103, made of cross-linked polyethylene, prevents current leakage, ensuring that current is transmitted only within conductor 101. The semi-conductive outer shielding layer 104, also made of a semi-conductive material, ensures a uniform electric field between the insulation layer 103 and the copper strip shield 105, while also providing some heat dissipation. The copper strip shield 105, made of thin copper strip, shields the electromagnetic field inside the cable, preventing interference with external equipment and also preventing external electromagnetic fields from affecting the cable's interior. The current transmission has an impact; the outermost protective sleeve 106 is made of polyvinyl chloride, which can provide physical protection for the internal structure of the cable and prevent it from being corroded by the external environment. This device eliminates the uneven electric field on the surface of the conductor 101 by setting up an overhead insulated cable assembly 1, with a semi-conductive inner shielding layer 102 covering the conductor 101 in sequence. The semi-conductive outer shielding layer 104 makes the electric field of the insulation layer 103 and the copper tape shield 105 uniform. The copper tape shield 105 confines the electromagnetic field inside the cable to avoid internal and external interference. The three layers of shielding ensure the effectiveness of insulation. At the same time, the conductor 101 is made of high-purity copper and aluminum alloy to reduce current transmission loss. The insulation layer 103 is made of cross-linked polyethylene and the protective sleeve 106 is made of polyvinyl chloride, which not only ensures insulation performance but also improves the resistance to environmental corrosion and extends the electrical performance stability period.

[0038] The usage and working principle of this device are as follows: The conductor 101 of the overhead insulated cable assembly 1 is made of a high-conductivity material, using high-purity copper and aluminum alloy; the inner shielding layer 102 is made of a semi-conductive material; the insulation layer 103 is made of cross-linked polyethylene; the semi-conductive outer shielding layer 104 is made of a semi-conductive material; the copper tape shield 105 is made of thin copper tape; the outermost protective sleeve 106 is made of polyvinyl chloride. Multiple first support frames 201 in the lightweight, high-strength assembly 2 are fixedly connected by first triangular frames 202, forming a ring-shaped support frame. The triangle has geometrically indeformable properties, which can evenly distribute the weight of the overhead insulated cable assembly 1 and the wind load onto each first support frame 201. When the overhead insulated cable assembly 1 is subjected to a vertically downward... When under load, the load is transferred to the first support frame 201 through the protective sleeve 106, and then distributed to all the first support frames 201 through the first triangular frame 202, so that the load borne by each first support frame 201 is reduced evenly. Each group of second support frames 203, which is fixedly connected to both sides of the first support frame 201, is connected through the second triangular frame 204 and the third triangular frame 205, which further strengthens the support structure's resistance to lateral deformation and can resist cable swaying caused by crosswinds. The arched frame 206, which is fixed to the outer surface of the other side of each group of second support frames 203, adopts an arc design. When subjected to external pressures such as falling object impact and strong wind compression, the pressure can be transferred along the arc surface of the arched frame 206 to the second support frames 203 on both sides, reducing local stress.Meanwhile, the arched frame 206 is a hollow frame structure, which reduces weight compared to a solid structure, balancing strength and lightweight. Furthermore, the first support frame 201, the second support frame 203, the first tripod 202, the second tripod 204, the third tripod 205, and the arched frame 206 all adopt a frame structure. This minimizes material usage and reduces the overall weight of the component while ensuring structural strength. Triangles have the characteristic of being non-deformable. In the lightweight, high-strength component 2, the first tripod 202, the second tripod 204, and the third tripod 205 extensively utilize tripod structures. When the overhead insulated cable assembly 1 is subjected to external pressure and impact, the arched frame 206 can withstand the external force first and deflect it. The force is transmitted throughout the entire support structure, thus protecting the cable body from damage. The first support frame 201 and the second support frame 203 support the cable body from different angles, forming a multi-support point support system. This multi-support point design can evenly distribute the load on the cable to each support point, with each support point bearing a relatively small load, thereby improving the load-bearing capacity and resistance to damage of the entire cable structure. When it is necessary to connect the overhead insulated cable assembly 1 to an external cable, the conductive part of the external cable end is inserted into the inner wall of one end of the connecting cylinder 301, ensuring that the conductive part is in close contact with the inner wall of the connecting cylinder 301. The connecting cylinder 301 is made of conductive material, and at this time, the external cable... The outer surface of the conductive part contacts the inner wall of the chuck 310. At this time, rotating the rotary knob 306 clockwise causes the worm gear 305, which is fixedly connected to it, to rotate. Because the worm gear 305 meshes with the turbine 304, the turbine 304 rotates with the worm gear 305 and drives the first helical column 307 to rotate synchronously. The first helical column 307 and the second helical column 308 are connected by threads, and the groove 311 on the outer surface of the second helical column 308 slides against the limiting block 312 on the inner wall of the connecting cylinder 301 to restrict the rotation of the second helical column 308. Therefore, when the first helical column 307 rotates, the second helical column 308 moves axially into the connecting cylinder 301, pushing the inclined plate 309 to squeeze the chuck 310. After being squeezed, the chuck 310... The clamp 310 contracts and tightly wraps around conductor 101, achieving the fixation and conductive connection of the two cable segments. When the clamp 310 clamps the external conductor, if the cable, due to vibration and thermal expansion and contraction, generates a reverse force attempting to loosen the clamp 310, this force is transmitted to the turbine 304. The turbine 304 and the worm gear 305 possess unidirectional self-locking properties, preventing the turbine 304 from driving the worm gear 305 to rotate in the opposite direction. The relative positions of the first helical column 307 and the second helical column 308 remain fixed, ensuring that the clamping force of the clamp 310 is not weakened by external disturbances. Furthermore, the length of the overhead insulated cable assembly 1 shown in the figure is only partial; the actual length of the overhead insulated cable assembly 1 can be set according to actual needs.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lightweight, high-strength overhead insulated cable, comprising an overhead insulated cable assembly (1), wherein a lightweight, high-strength component (2) is disposed on the outer surface of the overhead insulated cable assembly (1), characterized in that: The lightweight high-strength component (2) includes a plurality of first support frames (201). The plurality of first support frames (201) are arranged in a circumferential manner around the outer surface of the overhead insulated cable assembly (1) and extend axially. A first tripod (202) is fixedly connected to the outer surface of each of the plurality of first support frames (201). A second support frame (203) is fixedly connected to both sides of the radial outer surface of the plurality of first support frames (201). The plurality of second support frames (203) are arranged in pairs. A second tripod (204) is fixedly connected between the radial outer surfaces of each pair of second support frames (203). A third tripod (205) is fixedly connected to the outer surface of each pair of second support frames (203) on the side away from the overhead insulated cable assembly (1). An arched frame (206) is fixedly connected between the outer surfaces of each pair of second support frames (203) on the side away from the overhead insulated cable assembly (1). The arched frame (206) is located on the side of the third tripod (205) away from the overhead insulated cable assembly (1). Multiple first support frames (201) in the lightweight high-strength component (2) are fixedly connected by first tripods (202) to form a ring support frame. When the overhead insulated cable assembly (1) is subjected to a vertically downward load, the load is transferred to the first support frame (201) through the protective sleeve (106) and then distributed to all the first support frames (201) through the first tripods (202), so that the load borne by each first support frame (201) is reduced evenly. At the same time, the setting of the first tripods (202) can also enhance the radial stiffness of the first support frame (201) and prevent the first support frame (201) from bending and deforming due to lateral wind load. Each group of second support frames (203) fixedly connected to both sides of the first support frame (201) is connected by second tripods (204) and third tripods (205), further strengthening the support structure's resistance to lateral deformation and resisting The cable swaying caused by crosswinds is caused by the arched frame (206) fixed to the outer surface of each set of second support frame (203) with an arc design. When subjected to external pressures such as falling objects and strong winds, the impact force will first act on the arc surface of the arched frame (206), and then decompose into radial and axial components along the arc surface. The radial component is borne by the second support frame (203), while the axial component is dispersed along the length of the overhead insulated cable assembly (1). The overall exterior of the lightweight high-strength assembly (2) presents a circular wave shape, and its interior is hollow. The hollow structure inside forms a longitudinal ventilation channel that runs through the length of the overhead insulated cable assembly (1). Air can flow freely along the channel and directly carry away the heat of the overhead insulated cable assembly (1). The wave shape formed by the multiple arched frames (206) on the outside increases the contact area between the lightweight high-strength assembly (2) and the air, thereby increasing the heat dissipation area.

2. The lightweight, high-strength overhead insulated cable according to claim 1, characterized in that: Multiple uniformly arranged spheres (207) are fixedly connected to the outer surfaces of the multiple arched frames (206). The overhead insulated cable assembly (1) includes a conductor (101), and an inner shielding layer (102) is fixedly sleeved on the outer surface of the conductor (101).

3. The lightweight, high-strength overhead insulated cable according to claim 2, characterized in that: An insulating layer (103) is fixedly sleeved on the outer surface of the inner shielding layer (102), a semi-conductive outer shielding layer (104) is fixedly sleeved on the outer surface of the insulating layer (103), and a copper strip shield (105) is fixedly sleeved on the outer surface of the semi-conductive outer shielding layer (104).

4. The lightweight, high-strength overhead insulated cable according to claim 3, characterized in that: The outer surface of the copper strip shield (105) is fixedly fitted with a protective sleeve (106). One side of the outer surface of the plurality of first support frames (201) is fixedly connected to the outer surface of the protective sleeve (106), and one side of the outer surface of the plurality of second support frames (203) is fixedly connected to the outer surface of the protective sleeve (106).

5. The lightweight, high-strength overhead insulated cable according to claim 4, characterized in that: The overhead insulated cable assembly (1) has a connecting component (3) on its outer end surface. The connecting component (3) includes a connecting cylinder (301). One end of the conductor (101) is fixedly connected to the inner wall of the connecting cylinder (301) near the end of the overhead insulated cable assembly (1). A protective layer (302) is fixedly sleeved on the outer surface of the connecting cylinder (301). A fixed shaft (303) is movably embedded in the inner wall of the connecting cylinder (301).

6. The lightweight, high-strength overhead insulated cable according to claim 5, characterized in that: A turbine (304) is fixedly sleeved on the outer surface of the fixed shaft (303), and a worm gear (305) is movably embedded between the relative inner walls of the protective layer (302). The outer surface of the turbine (304) meshes with the outer surface of the worm gear (305).

7. The lightweight, high-strength overhead insulated cable according to claim 6, characterized in that: A rotary knob (306) is fixedly connected to one end of the worm gear (305), a first spiral column (307) is fixedly connected to one side of the outer surface of the turbine (304), one end of the protective layer (302) is fixedly connected to one end of the protective sleeve (106), and one end of the connecting cylinder (301) is fixedly connected to one end of the inner shielding layer (102).

8. The lightweight, high-strength overhead insulated cable according to claim 7, characterized in that: The outer surface of the first spiral column (307) is spirally connected to the second spiral column (308), and the outer surface of the second spiral column (308) is provided with a plurality of uniformly arranged sliding grooves (311).

9. The lightweight, high-strength overhead insulated cable according to claim 8, characterized in that: An inclined plate (309) is fixedly connected to the outer surface of the second spiral column (308) away from the turbine (304), and multiple limiting blocks (312) adapted to the slide groove (311) are fixedly connected to the middle cylinder of the connecting cylinder (301).

10. The lightweight, high-strength overhead insulated cable according to claim 9, characterized in that: The inner walls of the multiple grooves (311) slide against the outer surfaces of the multiple limiting blocks (312), and a clamp (310) is fixedly connected to the inner wall of one end of the external cable of the connecting cylinder (301), and the inclined plate (309) abuts against the inner side of the clamp (310).

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