An overhead line for tight line at high altitude

Abstract

The present invention discloses an overhead high-altitude wire for tightening wires, which relates to the technical field of overhead wires. An insulating isolation sleeve is sleeved outside the fixed wire core. A number of U-shaped pressing air bags are fixedly arranged at equal intervals on the outer side end of the insulating isolation sleeve. A number of elastic reinforcing ribs are connected through the inside of the U-shaped pressing air bags at equal intervals. A number of pressing springs are fixedly arranged at equal intervals at the top end inside the U-shaped pressing air bags. A hard pressing piece is fixed at the bottom ends of the multiple pressing springs. A buffer pressing piece is adhered to the bottom of the side end of the hard pressing piece. A number of elastic pressing strips are adhered to the outside of the insulating isolation sleeve at equal intervals. The present invention effectively solves the problem in the prior art that due to the lack of isolation components, the internal and external environments directly conduct heat exchange treatment, resulting in a large influence of the external environment on the internal temperature, causing high temperature and low temperature inside, leading to a decrease in insulation performance and sealing effect, and effectively improving the stability of the internal environment of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead lines, and particularly to an overhead line for tightener at high altitude. Background Art

[0002] An overhead cable is an overhead conductor equipped with an insulating layer and a protective outer skin, and is a special cable manufactured by a process similar to that of a cross-linked cable. It is a new power transmission method between overhead conductors and underground cables. Overhead cables are all single-core, and have the main characteristics of high power supply reliability, good power supply safety, convenient erection and maintenance, and reasonable economy.

[0003] However, when the overhead cable is in operation, since heat exchange is directly carried out inside and outside it and no isolation and adjustment components are provided, the inside remains at a low temperature in a low-temperature environment and at a high temperature in a high-temperature environment during operation. As a result, the cable is greatly affected by temperature, and it is easy to have a decrease in insulation performance and a reduction in sealing effect. At the same time, the core and the insulating layer are likely to be separated due to thermal expansion and contraction inside, which greatly affects the stable operation of the cable. Summary of the Invention

[0004] The present invention provides an overhead line for tightener at high altitude, which can effectively solve the problems raised in the above background art that when the current overhead cable is in operation, since heat exchange is directly carried out inside and outside it and no isolation and adjustment components are provided, the inside remains at a low temperature in a low-temperature environment and at a high temperature in a high-temperature environment during operation. As a result, the cable is greatly affected by temperature, and it is easy to have a decrease in insulation performance and a reduction in sealing effect. At the same time, the core and the insulating layer are likely to be separated due to thermal expansion and contraction inside, which greatly affects the stable operation of the cable.

[0005] To achieve the above object, the present invention provides the following technical solution: An overhead line for tightener at high altitude, including a fixed core, and a self-pressing component is arranged on the fixed core;

[0006] The self-pressing component includes an insulating isolation sleeve;

[0007] An insulating isolation sleeve is sleeved outside the fixed core, and a plurality of U-shaped pressing air bags are fixedly arranged at equal intervals at the outer end of the insulating isolation sleeve, and a plurality of elastic reinforcing ribs are connected through the inside of the U-shaped pressing air bags at equal intervals;

[0008] A plurality of pressing springs are fixedly arranged at equal intervals at the top end inside the U-shaped pressing air bags, a hard pressing piece is fixed at the bottom ends of the plurality of pressing springs, a buffer pressing piece is adhered to the bottom side of the hard pressing piece, and a plurality of elastic pressing strips are adhered to the outside of the insulating isolation sleeve at equal intervals;

[0009] A flexible integration sleeve is fixedly connected to the outer side ends of multiple U-shaped pressing air bags. A plurality of telescopic positioning holes are equidistantly formed at one end of the flexible integration sleeve. A plurality of combined limiting holes are equidistantly formed at a position close to the telescopic positioning holes at one end of the flexible integration sleeve. An isolation support sheet is fixedly connected to the inside of the combined limiting holes;

[0010] An endothermic telescopic air bag is fixed to the outer side end of the flexible integration sleeve. A plurality of heat conduction limiting strips are fixedly arranged at equal intervals on the outer side end of the endothermic telescopic air bag.

[0011] According to the above technical solution, the side ends of the hard pressing sheet and the buffer pressing sheet are slidably sleeved with the side ends of the elastic pressing strip;

[0012] The hard pressing sheet and the buffer pressing sheet are placed inside the U-shaped pressing air bag.

[0013] According to the above technical solution, a plurality of heat conduction special-shaped plates are adhesively bonded at equal intervals at positions corresponding to the heat conduction limiting strips on the outer side end of the endothermic telescopic air bag. An insulation limiting pad is adhesively bonded to the outer side of the heat conduction special-shaped plate;

[0014] A narrow-edge double guide sleeve is slidably sleeved on the outer side ends of multiple insulation limiting pads. Guide support sheets are fixed to one ends of two of the insulation limiting pads;

[0015] An inner pressure limiting sleeve is fixedly connected to the outer side end of the narrow-edge double guide sleeve. A plurality of pressing air cavities are equidistantly formed inside the inner pressure limiting sleeve. A plurality of shielding strips are equidistantly laid on the outer side end of the inner pressure limiting sleeve;

[0016] An outer insulation sleeve is fixed to the outer side ends of multiple shielding strips. A plurality of insertion connection holes are equidistantly formed at positions corresponding to the elastic reinforcing ribs on the side end of the U-shaped pressing air bag.

[0017] According to the above technical solution, the side ends of two adjacent U-shaped pressing air bags are adhesively combined. The longitudinal sections of the hard pressing sheet, the buffer pressing sheet, the elastic pressing strip, the isolation support sheet, the heat conduction limiting strip, the insulation limiting pad and the shielding strip are all arc-shaped.

[0018] According to the above technical solution, the longitudinal section of the heat conduction special-shaped plate is Z-shaped. Two adjacent heat conduction special-shaped plates are slidably connected to each other.

[0019] According to the above technical solution, the inner end of one side of the heat conduction special-shaped plate is slidably sleeved with the outer end of one side of the heat conduction limiting strip. The inner side of the narrow-edge double guide sleeve is slidably connected to the outer side of the guide support sheet.

[0020] According to the above technical solution, the longitudinal section of the narrow-edge double guide sleeve is semi-circular. The diameter of the insertion connection hole is equal to the diameter of the elastic reinforcing rib.

[0021] According to the above technical solution, a protection component is arranged on the outer side of the outer insulation sleeve;

[0022] The protective component includes a convex load-bearing block;

[0023] A number of convex load-bearing blocks are adhesively bonded to the outer side of the outer insulating sleeve at equal intervals. An inner concave insertion groove is formed at one end of the convex load-bearing block. A number of integrated adhesive strips are adhesively bonded to the inner side of the inner concave insertion groove at equal intervals. The outer ends of the plurality of integrated adhesive strips are adhesively bonded with a protective heat-insulating cover. Flow guiding limiting strips are fixedly connected to both ends of the protective heat-insulating cover;

[0024] Load-bearing matching strips are welded to both ends of the convex load-bearing block. A number of inner pressure buffer pads are fixedly arranged at equal intervals on the inner side of the protective heat-insulating cover. An anti-corrosion isolation film is laid on the outer end of the protective heat-insulating cover.

[0025] According to the above technical solution, the load-bearing matching strips are adhesively installed on the outer side end of the outer insulating sleeve, and the inner side end of the protective heat-insulating cover fits with the outer side end of the convex load-bearing block.

[0026] According to the above technical solution, the side end of the inner pressure buffer pad is adhesively combined with the outer side end of the outer insulating sleeve, and the longitudinal sections of the protective heat-insulating cover and the flow guiding limiting strip are arc-shaped.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. A self-pressing component is provided. The cable interior is heated by power supply and heating of the internal wire core. The U-shaped pressing airbag expands bidirectionally. At this time, the pressing spring presses and combines in the hard pressing piece, the buffer pressing piece, the elastic pressing strip and the U-shaped pressing airbag bidirectionally. The insulating isolation sleeve is extruded and restricted by the pressing spring, the hard pressing piece and the buffer pressing piece. And the U-shaped pressing airbag expands outwards and extrudes with the soft and fine integrated sleeve. It cooperates with the heat-absorbing telescopic airbag to absorb heat and expand bidirectionally. The internal and external simultaneous extrusion and expansion are utilized, and the telescopic positioning holes are used for buffering and supporting. The middle part is supported and restricted by the superimposed double-layer isolation support sheet, so that when the interior dissipates heat outwards, it can effectively cooperate with the internal components to realize self-pressing inside. And when the external temperature drops, the interior can still use the heat generated by itself and its own elastic pressing structure to form a steady press fit to ensure the internal compactness;

[0029] The heat-absorbing telescopic airbag pushes the heat-conducting shaped plate to move along the heat-conducting limiting strip, adjusts the spacing between the two heat-conducting shaped plates and the contact position between the heat-conducting limiting strip and the heat-conducting shaped plate, and cooperates with the heat-insulating limiting pad to perform two-way heat insulation treatment. When the external temperature is high, the internal pressure limiting sleeve and the pressed air cavity expand due to heat and push the narrow-edge double guide sleeve to slide along the guide support piece, performing overall extrusion and position limiting on the interior, reducing the contact area of internal and external heat exchange, thereby reducing the impact of the external high temperature on the interior. When the external temperature is low, the narrow-edge double guide sleeve and the guide support piece elastically support the external space and separate from the interior at the same time, reducing the efficiency of internal heat discharge, and cooperating with the heat-conducting shaped plate under the self-expansion and contraction operation of the heat-absorbing telescopic airbag to adjust the heat dissipation area and heat dissipation efficiency, control the internal temperature, and reduce the occurrence of reduced insulation performance, increased resistance and reduced sealing effect caused by high and low temperatures;

[0030] Through internal heat-absorbing elastic expansion and contraction, combined with multiple sets of internal elastic displacement and pressing supports, central heat-absorbing two-way pressing treatment, combined with the support and fixation of the central isolation support piece and the telescopic positioning hole, combined with external elastic support and hot and cold elastic adjustment, it effectively solves the problem in the prior art that the internal and external environments are directly heat-exchanged due to the lack of isolation components, resulting in the internal temperature being greatly affected by the outside, causing high and low temperatures inside, resulting in reduced insulation performance and reduced sealing effect. It effectively improves the stability of the internal environment of the cable, and through internal elastic hot extrusion and elastic adjustment, internal stable pressing is achieved, ensuring the tightness of the cable inside, improving the stability of the cable operation, and extending its service life.

[0031] When overhead cables are in operation, heat exchange is carried out directly inside and outside without isolation and adjustment components. When operating in a low-temperature environment, the internal temperature remains low, and when operating in a high-temperature environment, the internal temperature remains high. As a result, the internal part of the cable is greatly affected by the temperature, and the insulation performance is prone to degradation, conductive resistance is increased, and sealing effect is reduced. At the same time, the core and insulation are easily separated due to thermal expansion and contraction, which greatly affects the stability of the cable operation.

[0032] 2. A protective component is provided, and the raised load-bearing block and the load-bearing matching strip are bonded to the side end of the outer insulating sleeve, and the integrated adhesive strip is inserted into the inner side of the concave insertion groove, so that the protective insulation cover is fixed to the outer end of the raised load-bearing block, and the internal pressure buffer pad is pressed and connected with the outer insulating sleeve to achieve multi-segment stable connection, thereby ensuring stable support and restriction of the protective insulation cover. The protective insulation cover is supported and protected by the raised load-bearing block, the integrated adhesive strip, the load-bearing matching strip and the internal pressure buffer pad, reducing the pressure damage to the cover caused by wind and birds in a high-altitude environment and improving its service life. The protective insulation cover and the anti-corrosion isolation film are used for insulation and waterproofing, reducing the rapid rise in cable temperature caused by direct sunlight in the external environment, and reducing the corrosion of the cable by rain and light, thereby extending the service life of the cable and ensuring the stability of the use environment.

[0033] In summary, through the mutual cooperation of the self-pressing component and the protection component, the internal multi-stage temperature adjustment pressing component and the internal telescopic contact heat exchange component cooperate with each other, and the external contact protection and isolation protection are used for cooperative operation to achieve internal and external cooperative protection, reduce the aging damage speed of the cable caused by high temperature, low temperature, rain, snow and light, and through self-correction and adjustment cooperation, effectively improve the stability of the internal environment of the cable during operation, and reduce the mutual influence between the inside and the outside, thereby prolonging the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0035] In the drawings:

[0036] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0037] Figure 2 is a structural schematic diagram of the self-pressing component of the present invention;

[0038] Figure 3 is an installation structural schematic diagram of the U-shaped pressing airbag of the present invention;

[0039] Figure 4 is an installation structural schematic diagram of the insulating isolation sleeve of the present invention;

[0040] Figure 5 is the Figure 4 A structure enlarged schematic diagram of;

[0041] Figure 6 is the Figure 4 B structure enlarged schematic diagram of;

[0042] Figure 7 is a structural schematic diagram of the protection component of the present invention;

[0043] Figure 8 is an installation structural schematic diagram of the diversion limiting strip of the present invention;

[0044] Figure 9 is the Figure 8 C structure enlarged schematic diagram of;

[0045] Reference numerals in the figure: 1, fixed wire core;

[0046] 2. Self - pressing assembly; 201. Insulating isolation sleeve; 202. C - shaped pressing airbag; 203. Elastic reinforcing rib; 204. Pressing spring; 205. Hard pressing piece; 206. Buffer pressing piece; 207. Elastic pressing strip; 208. Flexible integration sleeve; 209. Telescopic positioning hole; 210. Combined limiting hole; 211. Isolation support piece; 212. Heat - absorbing telescopic airbag; 213. Heat - conducting limiting strip; 214. Heat - conducting special - shaped plate; 215. Heat - insulating limiting pad; 216. Narrow - side double - guide sleeve; 217. Guiding support piece; 218. Inner - pressure limiting sleeve; 219. Pressing air cavity; 220. Shielding strip; 221. Outer insulating sleeve; 222. Insertion connection hole

[0047] 3. Protection assembly; 301. Protruding load - bearing block; 302. Concave insertion groove; 303. Integrated bonding strip; 304. Protective heat - insulating cover; 305. Flow - guiding limiting strip; 306. Load - bearing mating strip; 307. Inner - pressure buffer pad; 308. Anticorrosive isolation film Specific embodiments

[0048] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention

[0049] Embodiment: As Figures 1-9 shown, the present invention provides a technical solution, a high - altitude overhead line for tightening wires, including a fixed wire core 1, and the fixed wire core 1 is provided with a self - pressing assembly 2

[0050] The self - pressing assembly 2 includes an insulating isolation sleeve 201, a C - shaped pressing airbag 202, an elastic reinforcing rib 203, a pressing spring 204, a hard pressing piece 205, a buffer pressing piece 206, an elastic pressing strip 207, a flexible integration sleeve 208, a telescopic positioning hole 209, a combined limiting hole 210, an isolation support piece 211, a heat - absorbing telescopic airbag 212, a heat - conducting limiting strip 213, a heat - conducting special - shaped plate 214, a heat - insulating limiting pad 215, a narrow - side double - guide sleeve 216, a guiding support piece 217, an inner - pressure limiting sleeve 218, a pressing air cavity 219, a shielding strip 220, an outer insulating sleeve 221 and an insertion connection hole 222

[0051] An insulating isolation sleeve 201 is sleeved outside the fixed wire core 1. A number of U-shaped pressing air bags 202 are fixedly arranged at equal intervals at the outer end of the insulating isolation sleeve 201. The side ends of two adjacent U-shaped pressing air bags 202 are bonded and combined to achieve stable support positioning and limitation, ensure the overall inward pressing and support positioning support treatment. A number of elastic reinforcing ribs 203 are equidistantly penetrated and connected inside the U-shaped pressing air bags 202. A number of pressing springs 204 are fixedly arranged at equal intervals at the top end inside the U-shaped pressing air bags 202. The bottom ends of a plurality of pressing springs 204 are fixed with hard pressing sheets 205. A buffer pressing sheet 206 is bonded to the bottom of the side end of the hard pressing sheet 205. A number of elastic pressing strips 207 are adhesively bonded to the outside of the insulating isolation sleeve 201 at equal intervals. The side ends of the hard pressing sheet 205 and the buffer pressing sheet 206 are slidably sleeved with the side ends of the elastic pressing strips 207. The hard pressing sheet 205 and the buffer pressing sheet 206 are placed inside the U-shaped pressing air bags 202 to achieve multi-section pressing alignment support and pressing limit treatment, ensure the stability of the overall fixing limit, and ensure the steady operation of inward pressing;

[0052] The outer ends of a plurality of U-shaped pressing air bags 202 are fixedly connected with a flexible integration sleeve 208. A number of telescopic positioning holes 209 are equidistantly opened at one end of the flexible integration sleeve 208. A number of combination limiting holes 210 are equidistantly opened at a position close to the telescopic positioning holes 209 at one end of the flexible integration sleeve 208. An isolation support sheet 211 is fixedly connected inside the combination limiting holes 210. An endothermic telescopic air bag 212 is fixed to the outer end of the flexible integration sleeve 208. A number of heat conduction limiting strips 213 are fixedly arranged at equal intervals at the outer end of the endothermic telescopic air bag 212;

[0053] Heat conduction special-shaped plates 214 are adhesively bonded to the outer end of the endothermic telescopic air bag 212 at equal intervals corresponding to the positions of the heat conduction limiting strips 213. The longitudinal section of the heat conduction special-shaped plate 214 is Z-shaped. Two adjacent heat conduction special-shaped plates 214 are slidably connected to each other. The inner end of one side of the heat conduction special-shaped plate 214 is slidably sleeved with the outer end of the heat conduction limiting strip 213 to achieve stable cooperative linkage of heat conduction adjustment, and achieve stable operation of sliding transposition and fine adjustment correction. A heat insulation limiting pad 215 is adhesively bonded to the outside of the heat conduction special-shaped plate 214. A narrow-edge double guide sleeve 216 is slidably sleeved on the outer ends of a plurality of heat insulation limiting pads 215. Guide support sheets 217 are fixed to one ends of two of the heat insulation limiting pads 215. The inner side of the narrow-edge double guide sleeve 216 is slidably connected to the outer side of the guide support sheet 217. The longitudinal section of the narrow-edge double guide sleeve 216 is semicircular to achieve telescopic movement and transposition adjustment, and ensure the stable operation of internal pressing correction and pressing limit;

[0054] An inner pressure limiting sleeve 218 is fixedly connected to the outer side end of the narrow-side double guide sleeve 216. The materials of the U-shaped pressing airbag 202, the flexible integration sleeve 208, the heat-absorbing telescopic airbag 212, and the inner pressure limiting sleeve 218 are all heat-conducting silica gel. A number of pressing air cavities 219 are equidistantly arranged on the inner side of the inner pressure limiting sleeve 218. A number of shielding strips 220 are equidistantly laid on the outer side end of the inner pressure limiting sleeve 218. The longitudinal sections of the hard pressing sheet 205, the buffer pressing sheet 206, the elastic pressing strip 207, the isolation support sheet 211, the heat-conducting limiting strip 213, the heat-insulating limiting pad 215, and the shielding strip 220 are all arc-shaped, realizing stable connection and fitting, and ensuring the stability of the overall alignment and support. The outer side ends of a plurality of shielding strips 220 are fixedly provided with an outer insulating sleeve 221. A number of insertion connection holes 222 are equidistantly arranged at the side end of the U-shaped pressing airbag 202 corresponding to the position of the elastic reinforcing rib 203. The diameter of the insertion connection hole 222 is equal to the diameter of the elastic reinforcing rib 203, ensuring the fixed effect of connection alignment and connection limit.

[0055] An outer protective component 3 is arranged on the outer side of the outer insulating sleeve 221;

[0056] The protective component 3 includes a convex load-bearing block 301, a concave insertion groove 302, an integrated adhesive strip 303, a protective heat-insulating cover 304, a diversion limiting strip 305, a load-bearing cooperation strip 306, an inner pressure buffer pad 307, and an anti-corrosion isolation film 308;

[0057] A number of convex load-bearing blocks 301 are adhesively connected to the outer side of the outer insulating sleeve 221 at equal intervals. An inner concave insertion groove 302 is opened at one end of the convex load-bearing block 301. A number of integrated adhesive strips 303 are adhesively connected to the inner side of the inner concave insertion groove 302 at equal intervals. A protective heat-insulating cover 304 is adhesively connected to the outer side ends of a plurality of integrated adhesive strips 303. The material of the protective heat-insulating cover 304 is aerogel. The inner side end of the protective heat-insulating cover 304 is attached to the outer side end of the convex load-bearing block 301, ensuring the stable support and fixation of support buffering and connection limit. Flow diversion limiting strips 305 are fixedly connected to both ends of the protective heat-insulating cover 304. The longitudinal sections of the protective heat-insulating cover 304 and the flow diversion limiting strip 305 are arc-shaped, ensuring alignment and fitting and stable support. Load-bearing cooperation strips 306 are welded to both ends of the convex load-bearing block 301. The load-bearing cooperation strips 306 are adhesively installed at the outer side end of the outer insulating sleeve 221, realizing the stability of fitting support and connection. A number of inner pressure buffer pads 307 are fixedly arranged on the inner side of the protective heat-insulating cover 304 at equal intervals. The side end of the inner pressure buffer pad 307 is adhesively combined with the outer side end of the outer insulating sleeve 221, realizing buffer support and buffer positioning. An anti-corrosion isolation film 308 is laid on the outer side end of the protective heat-insulating cover 304.

[0058] Working principle and usage process of the present invention: When laying the overhead cable, lay and fix the cable to the power transmission equipment, install the fixed wire core 1 on the transformer equipment and the power supply equipment to complete the laying process of the overhead line. After the overhead cable is laid, bond the convex load-bearing block 301 and the load-bearing matching strip 306 to the outer insulating sleeve 221 using an adhesive. Insert the integrated bonding strip 303 into the inner concave insertion groove 302, and use an adhesive to bond and connect the integrated bonding strip 303 and the convex load-bearing block 301, so that the protective heat-insulating cover 304 is fixed to the outer end of the convex load-bearing block 301. At this time, the inner pressure buffer pad 307 is pressed onto the outer insulating sleeve 221 to achieve multi-stage stable connection, thereby ensuring the stable support and limitation of the protective heat-insulating cover 304. After multiple protective heat-insulating covers 304 are fixed, bond and lay the anti-corrosion isolation film 308 on the outer end of the protective heat-insulating cover 304 to achieve protection. Support and protect the protective heat-insulating cover 304 through the convex load-bearing block 301, the integrated bonding strip 303, the load-bearing matching strip 306, and the inner pressure buffer pad 307, reduce the pressure damage caused by wind and birds in the high-altitude environment, and extend its service life. Conduct heat insulation and waterproof treatment through the protective heat-insulating cover 304 and the anti-corrosion isolation film 308. During precipitation, rainwater flows along the arc of the protective heat-insulating cover 304 and the diversion limiting strip 305, discharging the rainwater to both sides, reducing the contact amount of rainwater with the cable surface, reducing the rapid rise of the cable temperature caused by direct sunlight in the external environment, and reducing the corrosion of the cable by rainwater and light, extending the service life of the cable, and ensuring the stability of the usage environment;

[0059] During the operation of the cable, conduct electricity using the fixed wire core 1. During continuous conduction, the fixed wire core 1 generates heat, and the heat is conducted outward along the fixed wire core 1 and the insulating isolation sleeve 201. The heat is transferred to the U-shaped pressing airbag 202 through air heat conduction and contact heat exchange between the insulating isolation sleeve 201 and the U-shaped pressing airbag 202. The U-shaped pressing airbag 202 expands. At this time, the pressing spring 204 drives the hard pressing piece 205 and the buffer pressing piece 206 to press onto the side end of the insulating isolation sleeve 201 along the elastic pressing strip 207. Both ends of the U-shaped pressing airbag 202 expand simultaneously. At this time, the elastic reinforcing rib 203 supports the U-shaped pressing airbag 202 and undergoes elastic deformation. When expanding inward, it squeezes the pressing spring 204. At this time, the pressing spring 204 is squeezed bidirectionally by the hard pressing piece 205 and the buffer pressing piece 206. The pressing spring 204 pushes the hard pressing piece 205 and the buffer pressing piece 206 to squeeze towards the insulating isolation sleeve 201 along the elastic pressing strip 207, and pushes the insulating isolation sleeve 201 to squeeze towards the side end of the fixed wire core 1 to achieve multi-stage internal extrusion;

[0060] When expanding outwards, the U-shaped pressing airbag 202 pushes the flexible integration sleeve 208 to extrude outwards. At this time, the telescopic positioning holes 209 are deformed as a whole, with the length of their rectangular cross-section becoming longer and the width becoming narrower. The isolation support pieces 211 and the combined limiting holes 210 press and limit the flexible integration sleeve 208 as a whole. Through the overall external limiting, the segmented support and the superimposed limiting of the isolation support pieces 211, the overall support and positioning are realized. At the same time, the internal heat is introduced along the insulating isolation sleeve 201, the U-shaped pressing airbag 202 and the flexible integration sleeve 208 to the position of the heat-absorbing telescopic airbag 212. At this time, the air at the position of the heat-absorbing telescopic airbag 212 is heated, causing the heat-absorbing telescopic airbag 212 to expand both inwards and outwards. The flexible integration sleeve 208 and the heat-absorbing telescopic airbag 212 are squeezed simultaneously in both directions to restrict the interior, achieving the middle extrusion and fixation, and cooperating with the isolation support pieces 211 for positioning support and limit fixation to ensure the stability of the middle fixation and support;

[0061] When the heat-absorbing telescopic airbag 212 expands, it pushes the heat-conducting special-shaped plate 214 to slide along the heat-conducting limiting strip 213. At the same time, the two heat-conducting special-shaped plates 214 slide and change positions, changing the heat dissipation area of the heat-conducting special-shaped plate 214, and isolating and restricting through the heat-insulating limiting pad 215 to realize the internal and external heat exchange when the internal temperature is high. The internal heat is exported outwards along the heat-conducting limiting strip 213 and the heat-conducting special-shaped plate 214, and isolated and limited through the heat-insulating limiting pad 215. At the same time, the heat-conducting special-shaped plate 214 pushes the narrow-edge double-guide sleeves 216 on both sides to move along the guiding support piece 217, changing the distance between the two narrow-edge double-guide sleeves 216, thereby adjusting the contact area between the guiding support piece 217 and the narrow-edge double-guide sleeves 216 and increasing the internal heat-conducting and heat-exchanging area;

[0062] When the internal temperature is normal and the external temperature is low, the internal heat is transferred to the position of the internal pressure limiting sleeve 218. At this time, the air in the pressing air cavity 219 is heated and expanded, and cooperates with the external support and limit through the external insulating sleeve 221 and the shielding strip 220. At this time, the internal pressure limiting sleeve 218 is squeezed inwards to push the guiding support piece 217 to reset, reducing the internal heat-conducting area, thereby reducing the efficiency of the internal and external heat exchange. The internal and external heat-conducting areas are adjusted according to the internal and external temperatures, thereby realizing the heat-conducting adjustment. And through the internal and external three-stage extrusion, the overall integration of the cable can be realized, ensuring the tightness of the internal extrusion of the cable in different environments and the stability of the cable pressing.

[0063] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. 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 perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An overhead line for tightener, comprising a fixed wire core (1), characterized in that: The fixed wire core (1) is provided with a self - pressing component (2); The self - pressing component (2) includes an insulating isolation sleeve (201); An insulating isolation sleeve (201) is sleeved outside the fixed wire core (1). A number of U - shaped pressing air bags (202) are fixedly arranged at equal intervals at the outer end of the insulating isolation sleeve (201). A number of elastic reinforcing ribs (203) are connected through the inner side of the U - shaped pressing air bags (202) at equal intervals; A number of pressing springs (204) are fixedly arranged at equal intervals at the top end inside the U - shaped pressing air bags (202). A hard pressing piece (205) is fixed at the bottom ends of the plurality of pressing springs (204). A buffer pressing piece (206) is bonded to the bottom of the side end of the hard pressing piece (205). A number of elastic pressing strips (207) are bonded to the outside of the insulating isolation sleeve (201) at equal intervals; The outer ends of the plurality of U - shaped pressing air bags (202) are fixedly connected with a flexible integration sleeve (208). A number of telescopic positioning holes (209) are opened at equal intervals at one end of the flexible integration sleeve (208). A number of combination limiting holes (210) are opened at equal intervals at a position close to the telescopic positioning holes (209) at one end of the flexible integration sleeve (208). An isolation support piece (211) is fixedly connected inside the combination limiting holes (210); A heat - absorbing telescopic air bag (212) is fixed at the outer end of the flexible integration sleeve (208). A number of heat - conducting limiting strips (213) are fixedly arranged at equal intervals at the outer end of the heat - absorbing telescopic air bag (212).

2. The high-altitude overhead line for tightening wires according to claim 1, wherein The side ends of the hard pressing piece (205) and the buffer pressing piece (206) are slidably sleeved with the side ends of the elastic pressing strips (207); The hard pressing piece (205) and the buffer pressing piece (206) are placed inside the U - shaped pressing air bags (202).

3. An aerial overhead line for tightening wires according to claim 1, characterized in that, A number of heat - conducting special - shaped plates (214) are bonded at equal intervals at positions corresponding to the heat - conducting limiting strips (213) at the outer end of the heat - absorbing telescopic air bag (212). A heat - insulating limiting pad (215) is bonded to the outside of the heat - conducting special - shaped plates (214); The outer ends of the plurality of heat - insulating limiting pads (215) are slidably sleeved with a narrow - side double - guide sleeve (216). Guide support pieces (217) are fixed at one ends of two of the heat - insulating limiting pads (215); The outer end of the narrow - side double - guide sleeve (216) is fixedly connected with an inner - pressure limiting sleeve (218). A number of pressing air cavities (219) are opened at equal intervals inside the inner - pressure limiting sleeve (218). A number of shielding strips (220) are laid at equal intervals at the outer end of the inner - pressure limiting sleeve (218); The outer ends of the plurality of shielding strips (220) are fixed with an outer insulating sleeve (221). Insertion connection holes (222) are opened at equal intervals at positions corresponding to the elastic reinforcing ribs (203) at the side end of the U - shaped pressing air bags (202).

4. An aerial overhead line for tightener according to claim 3, characterized in that, The side ends of two adjacent U - shaped pressing air bags (202) are bonded and combined. The longitudinal sections of the hard pressing piece (205), the buffer pressing piece (206), the elastic pressing strip (207), the isolation support piece (211), the heat - conducting limiting strip (213), the heat - insulating limiting pad (215) and the shielding strip (220) are all arc - shaped.

5. An overhead line for tightener according to claim 3, characterized in that, The longitudinal section of the heat-conducting special-shaped plate (214) is Z-shaped, and two adjacent heat-conducting special-shaped plates (214) are slidably connected to each other.

6. An aerial overhead line for tightening wires according to claim 3, characterized in that, One end of the inner side of the heat-conducting special-shaped plate (214) is slidably sleeved with one end of the outer side of the heat-conducting limiting strip (213), and the inner side of the narrow-edge double guide sleeve (216) is slidably connected to the outer side of the guiding support piece (217).

7. An aerial overhead line for tightener according to claim 3, characterized in that, The longitudinal section of the narrow-edge double guide sleeve (216) is semi-circular, and the diameter of the insertion connection hole (222) is equal to the diameter of the elastic reinforcing rib (203).

8. The overhead line for tightener according to claim 3, characterized in that, A protection component (3) is arranged on the outer side of the outer insulation sleeve (221); The protection component (3) includes a convex load-bearing block (301); A plurality of convex load-bearing blocks (301) are adhesively bonded to the outer side of the outer insulation sleeve (221) at equal intervals. An inner concave insertion groove (302) is formed at one end of the convex load-bearing block (301). A plurality of integrated adhesive strips (303) are adhesively bonded to the inner side of the inner concave insertion groove (302) at equal intervals. A protection and heat insulation cover (304) is adhesively bonded to the outer ends of the plurality of integrated adhesive strips (303). Flow guiding limiting strips (305) are fixedly connected to both ends of the protection and heat insulation cover (304); Load-bearing cooperation strips (306) are welded to both ends of the convex load-bearing block (301). A plurality of inner pressure buffer pads (307) are fixedly arranged at equal intervals on the inner side of the protection and heat insulation cover (304). An anti-corrosion isolation film (308) is laid on the outer end of the protection and heat insulation cover (304).

9. An aerial overhead line for tightener according to claim 8, characterized in that, The load-bearing cooperation strips (306) are adhesively installed on the outer end of the outer insulation sleeve (221), and the inner end of the protection and heat insulation cover (304) is attached to the outer end of the convex load-bearing block (301).

10. An overhead line for tightener according to claim 8, characterized in that, The side end of the inner pressure buffer pad (307) is adhesively combined with the outer end of the outer insulation sleeve (221), and the longitudinal sections of the protection and heat insulation cover (304) and the flow guiding limiting strip (305) are arc-shaped.

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