A wear-resistant flame-retardant insulated overhead cable

Abstract

The invention discloses a wear-resistant flame-retardant insulated overhead cable, which relates to the technical field of cables and comprises asbestos. A wire core for conducting current is arranged near the center of the asbestos, and a plurality of conductors for transmitting electric energy are arranged inside the asbestos. When the wear-resistant flame-retardant insulated overhead cable is arranged outdoors in a residential area, firstly one of the connecting rings is passed through the outer surface of a mounting ring, and then the cable outer sheath is driven to pass through the mounting ring and is sleeved on the outer surface of the cable, so that two telescopic tubes are both sleeved on the outer surface of the cable, and then the other connecting ring is fixed on the outer surface of the mounting ring, and then the other connecting ring can be moved to the other end of the overhead cable and fixed on the outer surface of the other mounting ring, so that the cable outer sheath is sleeved on the outer surface of the cable to protect the cable, thereby solving the problem of low wear resistance of the overhead cable for residential areas affected by the external environment in the prior art.

Description

Technical Field

[0001] The invention relates to the technical field of cables, in particular to a wear-resistant and flame-retardant insulated overhead cable. Background Art

[0002] A cable is a conductor used to transmit electrical energy or electrical signals. It is composed of multiple conductors and insulating materials to ensure the stable transmission of signals or currents. Overhead cables refer to cables laid by hanging in the air for power transmission or communication purposes. They are composed of conductors, insulating materials and protective layers. They can withstand the influence of the external environment, such as wind, rain, ice and snow, and are widely used in the fields of electricity, communications, etc.

[0003] At present, the length of outdoor overhead cables in residential areas is generally between 10 meters and 50 meters. Since flame-retardant insulated overhead cables are suspended in the air and installed outdoors, and the outdoor environment is complex, affected by various environmental factors such as weather, temperature, and ultraviolet rays, it is easy to cause material aging and wear, and reduce wear resistance efficiency. For example, high temperature will cause thermal aging of insulating materials, reducing their mechanical properties and wear resistance. Under humid conditions, moisture can easily penetrate into the interior of the cable and cause corrosion or short circuit, affecting the long-term performance of the cable. It is particularly serious when the cable is subjected to external wear, thereby reducing the strength of the overhead cable.

[0004] Therefore, we propose a wear-resistant flame-retardant insulated overhead cable to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a wear-resistant and flame-retardant insulated overhead cable to solve the problem of low wear resistance of the overhead cable for residential area due to the influence of the external environment proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A wear-resistant flame-retardant insulated overhead cable, comprising asbestos, wherein a wire core for conducting current is arranged near the center of the asbestos, wherein a plurality of conductors for transmitting electric energy are arranged inside the asbestos, wherein the outer surfaces of the plurality of conductors are all provided with a protective layer, wherein a reinforcing component for improving the flame retardant performance of the overhead cable is arranged on the outer surface of the asbestos, wherein two mounting rings are arranged on the outer surface of the reinforcing component, wherein two wear-resistant components for improving the wear resistance of the overhead cable are arranged on the outer surfaces of the two mounting rings, wherein the two wear-resistant components each include a connecting ring, wherein a plurality of connecting tubes are fixedly embedded in the inner walls of the two connecting rings, wherein a cable outer sheath for protecting the overhead cable is arranged between the outer surfaces of the two connecting rings, wherein a limiting shaft is arranged inside the plurality of connecting tubes, wherein two slide grooves are arranged on the inner walls of the plurality of connecting tubes, wherein two adjacent slide grooves form a group, wherein a slide plate is movably connected between the inner walls of each group of the slide grooves, wherein telescopic rods are fixedly arranged on the outer surfaces of the plurality of slide plates, wherein springs are arranged on the outer surfaces of the plurality of telescopic rods, and wherein a clamping column is fixedly installed on one end of the plurality of telescopic rods.

[0007] Preferably, the inner walls of the two mounting rings are provided with a plurality of limit grooves, the two mounting rings slide on the inner walls of the two connecting rings respectively, the inner walls of the plurality of slides are rotatably connected to the outer surfaces of the plurality of limit shafts respectively, and one end of the plurality of springs is fixedly connected to the outer surfaces of the plurality of slides respectively.

[0008] Preferably, the other ends of the multiple springs are fixedly connected to one ends of the multiple clamping columns, and the multiple clamping columns slide on the inner walls of the multiple limit grooves, respectively. The outer surfaces of the two connecting rings are provided with cleaning components for cleaning water sources on the surface of the overhead cables, and the two cleaning components include a mounting frame.

[0009] Preferably, outer surfaces of the two mounting frames are fixedly connected to outer surfaces of the two connecting rings respectively, and inner walls of the two mounting frames are provided with air pumps for air suction and air delivery.

[0010] Preferably, valves are provided on the outer surfaces of the air inlet pipe and the air outlet pipe of the two air pumps, connecting pipes for conveying gas are fixedly embedded on the inner walls of the two connecting rings, and one end of the air inlet pipe and the air outlet pipe of the two air pumps respectively penetrates into the interior of the two connecting pipes.

[0011] Preferably, the outer surfaces of the two connecting rings are provided with telescopic tubes for cleaning foreign objects, the inner walls of the two telescopic tubes are provided with sealing rings, the two sealing rings are made of rubber material, and one end of the two connecting tubes respectively penetrates into the interior of the two telescopic tubes.

[0012] Preferably, the reinforcement component includes a shielding layer for preventing internal signal leakage of the cable, the shielding layer is connected to the asbestos through an external metal connector, and the outer surface of the shielding layer is provided with a heat dissipation layer for cooling the overhead cable.

[0013] Preferably, the outer surface of the heat dissipation layer is provided with a first insulating layer for preventing current leakage between the cable and the external environment, the outer surface of the first insulating layer is provided with a second insulating layer for preventing external electromagnetic interference with the overhead cable signal, and the outer surface of the second insulating layer is provided with a flame retardant layer.

[0014] Preferably, a plurality of sealing sleeves for placing flame retardant powder are arranged on the outer surface of the flame retardant layer, a high pressure layer is arranged on the outer surface of the flame retardant layer, a reinforcement layer for improving the mechanical strength of the overhead cable is arranged on the outer surface of the sealing sleeve, and the reinforcement layer is made of steel wire material.

[0015] Preferably, the outer surface of the reinforcement layer is provided with an outer sheath for improving the safety of the overhead cable, the inner walls of the two mounting rings are fixedly connected to the outer surface of the outer sheath by hot melt adhesive, and the two telescopic tubes are arranged inside the cable outer sheath.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When installing an outdoor overhead cable in a residential area, firstly, one of the connecting rings is passed through the outer surface of the mounting ring, and then the outer sheath of the cable is driven to pass through the mounting ring and is sleeved on the outer surface of the cable, so that both telescopic tubes are sleeved on the outer surface of the cable, and then the other connecting ring is fixed on the outer surface of the mounting ring, and then the other connecting ring can be moved to the other end of the overhead cable and fixed on the outer surface of the other mounting ring, so that the outer sheath of the cable is sleeved on the outer surface of the cable to protect the cable, thereby solving the problem of low wear resistance of overhead cables for residential areas in the prior art due to the influence of the external environment.

[0018] 2. After the wind and rain, start the two air pumps to make the two telescopic tubes move along the outer surface of the cable toward the center of the cable, thereby removing the water from the cable sheath and the cable surface to prevent the water from corroding the cable and reducing the wear resistance of the cable. This can effectively prevent the overhead cables used in the community from being affected by the external environment and reducing their wear resistance.

[0019] 3. In order to further improve the stability of overhead cables in the community, the effect of asbestos is used to effectively prevent current leakage in the cables, the heat generated during cable operation is effectively removed through the heat dissipation layer, the insulation of the cables is improved through the first insulating layer and the second insulating layer, and the strength of the cables is further improved through the high-voltage layer and the sealing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0021] Figure 2 It is a partial three-dimensional diagram of a reinforcement component of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0022] Figure 3 It is a three-dimensional diagram of the reinforcement layer of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0023] Figure 4 It is a cross-sectional stereoscopic diagram of the high-voltage layer of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0024] Figure 5 It is a partial three-dimensional diagram of a wear-resistant component of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0025] Figure 6 It is a three-dimensional diagram of the installation ring part of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0026] Figure 7 It is a cross-sectional perspective view of the structure of the connecting pipe part of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0027] Figure 8 It is a three-dimensional diagram of the cable outer sheath part of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0028] Fig. 9 It is a three-dimensional diagram of the telescopic tube part of a wear-resistant and flame-retardant insulated overhead cable of the present invention;

[0029] Fig.10 For the present invention Fig. 9 Enlarged view of point A in the middle.

[0030] In the figure:

[0031] 1. Asbestos; 2. Wire core; 3. Conductor; 4. Protective layer; 5. Reinforcement component; 501. Shielding layer; 502. Heat dissipation layer; 503. First insulating layer; 504. Second insulating layer; 505. Flame retardant layer; 506. Sealing sleeve; 507. High-voltage layer; 508. Reinforcement layer; 509. Outer sheath; 6. Mounting ring; 7. Limiting groove; 8. Wear-resistant component; 801. Connecting pipe; 802. Limiting shaft; 803. Slide plate; 804. Slide groove; 805. Telescopic rod; 806. Spring; 807. Column; 808. Cable outer sheath; 809. Connecting ring; 9. Cleaning component; 901. Mounting frame; 902. Air pump; 903. Valve; 904. Connecting pipe; 905. Telescopic pipe; 906. Sealing ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1-10The present invention provides a technical solution: a wear-resistant flame-retardant insulated overhead cable, comprising asbestos 1, a wire core 2 for conducting current is arranged near the center of the asbestos 1, a plurality of conductors 3 for transmitting electric energy are arranged inside the asbestos 1, and the outer surfaces of the plurality of conductors 3 are all covered with a protective layer 4, a reinforcing component 5 for improving the flame retardant performance of the overhead cable is arranged on the outer surface of the asbestos 1, two mounting rings 6 are arranged on the outer surface of the reinforcing component 5, and two wear-resistant components 8 for improving the wear resistance of the overhead cable are arranged on the outer surfaces of the two mounting rings 6, and the two wear-resistant components 8 each include a connecting ring 809, and the inner walls of the two connecting rings 809 are fixedly embedded with a plurality of connecting rings 809. A cable outer sheath 808 for protecting the overhead cable is arranged between the outer surfaces of the two connecting rings 809, a plurality of connecting pipes 801 are provided with a limit shaft 802 inside, the inner walls of the plurality of connecting pipes 801 are provided with two slide grooves 804, each two adjacent slide grooves 804 form a group, and a slide plate 803 is movably connected between the inner walls of each group of slide grooves 804, the outer surfaces of the plurality of slide plates 803 are fixed with telescopic rods 805, the outer surfaces of the plurality of telescopic rods 805 are provided with springs 806, and one end of the plurality of telescopic rods 805 is fixedly installed with a clamping column 807, the inner walls of the two mounting rings 6 are provided with a plurality of limit grooves 7, and the two mounting The rings 6 slide on the inner walls of the two connecting rings 809 respectively, the inner walls of the multiple slides 803 are rotatably connected to the outer surfaces of the multiple limit shafts 802 respectively, one end of the multiple springs 806 is fixedly connected to the outer surfaces of the multiple slides 803 respectively, the other ends of the multiple springs 806 are fixedly connected to one ends of the multiple clamping columns 807 respectively, and the multiple clamping columns 807 slide on the inner walls of the multiple limit grooves 7 respectively. The outer surfaces of the two connecting rings 809 are provided with cleaning components 9 for cleaning the water source on the surface of the overhead cable. The two cleaning components 9 include mounting frames 901. The outer surfaces of the two mounting frames 901 are fixedly connected to the outer surfaces of the two connecting rings 809 respectively. The inner wall of the mounting frame 901 is provided with an air pump 902 for suction and delivery of air, the outer surfaces of the air inlet pipe and the air outlet pipe of the two air pumps 902 are provided with valves 903, the inner walls of the two connecting rings 809 are fixedly embedded with connecting pipes 904 for conveying gas, one end of the air inlet pipe and the air outlet pipe of the two air pumps 902 respectively penetrate into the interior of the two connecting pipes 904, the outer surfaces of the two connecting rings 809 are provided with telescopic tubes 905 for cleaning foreign objects, the inner walls of the two telescopic tubes 905 are provided with sealing rings 906, the two sealing rings 906 are made of rubber material, and one end of the two connecting tubes 904 respectively penetrate into the interior of the two telescopic tubes 905.

[0034] In this embodiment, when outdoor overhead cables are arranged in a residential area, in order to improve the wear resistance of the cables and improve their mechanical strength, since the length of the outdoor overhead cables used in the residential area is between 10m and 50m, when installing the overhead cables in the residential area, firstly, one of the connecting rings 809 is passed through the outer surface of the mounting ring 6, thereby driving the cable outer sheath 808 to pass through the mounting ring 6 and be sleeved on the outer surface of the cable, so that the two telescopic tubes 905 are both sleeved on the outer surface of the cable, and then another connecting ring 809 is sleeved on the outer surface of the mounting ring 6, so that the four limiting grooves 7 correspond to the positions of the four clamping columns 807 respectively, and then the limiting shafts 802 are pressed into the inside of the limiting grooves 7 respectively, driving the four slides 803 to move forward along the slide grooves 804 respectively, and then driving the four clamping columns 807 to move into the corresponding limiting grooves 7 respectively, and at the same time, the four springs 806 are squeezed during the movement of the clamping columns 807, thereby driving the limiting shaft 802 to move into the inside of the connecting tube 801, wherein, as shown in FIG. Figure 7 As shown, the outer surface of the limiting shaft 802 is provided with a circle of threads. When the threaded part moves to the inside of the connecting tube 801, the limiting shaft 802 is rotated so that the limiting shaft 802 is connected with the internal thread of the connecting tube 801, and the limiting shaft 802 is rotated to drive the clamping column 807 to move downward until the outer surface of the clamping column 807 is tightly fitted with the deepest part of the inner wall of the limiting groove 7, that is, the connection between the connecting ring 809 and the mounting ring 6 is completed, and then another connecting ring 809 can be moved to the other end of the overhead cable until the connecting ring 809 moves to the outer surface of the corresponding mounting ring 6 and is connected to the mounting ring 6 through the above steps. The movement of the connecting ring 809 causes the cable outer sheath 808 to be sleeved on the outer surface of the cable, wherein the cable outer sheath 808 is made of polyester fiber cloth, and the polyester fiber itself has good UV resistance and can effectively block the penetration of ultraviolet rays. , to prevent material degradation caused by sunlight exposure, the molecular structure of polyester fiber makes it not easily damaged by ultraviolet rays, which extends the service life of the cable. Since polyester fiber shows a certain stability in high temperature environment, it can work in a relatively high temperature range without deformation or loss of function due to sudden temperature changes. This makes polyester fiber fabric suitable for a variety of environments with large temperature changes, thereby effectively preventing overhead cables from being affected by temperature changes and affecting their wear resistance. Secondly, polyester fiber has high strength and toughness, so that it can still maintain its integrity when subjected to physical impact or friction, which is crucial to maintaining the safety and performance of the cable. In order to prevent the outdoor cables used in the community from being eroded by rain, after the wind and rain, the two air pumps 902 are started through the external control system, and the valve 903 on the surface of the air inlet pipe is opened to transport gas to the inside of the two telescopic tubes 905 respectively, where, as Fig. 9As shown, a sealing ring 906 is provided at the connection between the two telescopic tubes 905 and the cable, the purpose of which is to improve the sealing performance between the telescopic tubes 905 and the cable. When the two telescopic tubes 905 are filled with gas, they are extended by the impact of the gas, so that the two telescopic tubes 905 move forward along the cable respectively, thereby scraping off rainwater that penetrates from the surface of the cable outer sheath 808. At the same time, the movement of the telescopic tubes 905 causes the cable outer sheath 808 to expand, thereby increasing the space between the fibers. The expansion causes the surface properties of the polyester fiber to change, increasing the weight of the surface water droplets, so that the water droplets slide down due to gravity. Through the movement of the telescopic tubes 905, the water source on the cable surface and the cable outer sheath 808 is removed, preventing the water source from eroding the cable and reducing the wear resistance of the cable. When the rainwater is cleared, the two air pumps 902 are started again, and the valves 903 on the surfaces of the two suction pipes are opened to draw gas from the inside of the two telescopic tubes 905 respectively. The air pump 902 is filled with oil, and the oil forms a seal between the rotor and the inner wall of the pump body, so that the gas can be more effectively compressed and discharged during inhalation. When the gas is inhaled, the oil and gas mix and enter the pump chamber, and are compressed to high pressure and then discharged through the exhaust pipe, so that the two telescopic tubes 905 are shortened under the action of negative pressure and move along the cable to the outer surfaces of the two mounting rings 6 respectively. Through the action of the wear-resistant component 8 and the cleaning component 9, the overhead cables for the community are effectively prevented from being affected by the external environment and reducing their wear resistance, thereby solving the problem of low wear resistance of the overhead cables for the community in the prior art due to the influence of the external environment.

[0035] Embodiment 2: Figure 1-Figure 4 As shown, the reinforcement component 5 includes a shielding layer 501 for preventing internal signal leakage of the cable, the shielding layer 501 is connected to the asbestos 1 through an external metal connector, the outer surface of the shielding layer 501 is provided with a heat dissipation layer 502 for cooling the overhead cable, the outer surface of the heat dissipation layer 502 is provided with a first insulating layer 503 for preventing current leakage between the cable and the external environment, the outer surface of the first insulating layer 503 is provided with a second insulating layer 504 for preventing external electromagnetic interference with the overhead cable signal, and the outer surface of the second insulating layer 504 is provided with a flame retardant layer 505 The outer surface of the flame retardant layer 505 is provided with a plurality of sealing sleeves 506 for placing flame retardant powder, the outer surface of the flame retardant layer 505 is provided with a high-pressure layer 507, the outer surface of the sealing sleeve 506 is provided with a reinforcement layer 508 for improving the mechanical strength of the overhead cable, the reinforcement layer 508 is made of steel wire material, the outer surface of the reinforcement layer 508 is provided with an outer protective layer 509 for improving the safety of the overhead cable, the inner walls of the two mounting rings 6 are fixedly connected to the outer surface of the outer protective layer 509 by hot melt adhesive, and the two telescopic tubes 905 are arranged inside the cable outer sheath 808.

[0036] In this embodiment, in order to further improve the stability of the overhead cable in the community, the asbestos 1 is used to effectively prevent the current leakage in the cable and ensure the safe operation of the cable. The protective layer 4 is made of polyvinyl chloride material, which can effectively prevent the accidental short circuit between the conductor 3 and the external environment and ensure the safe passage of current. The shielding layer 501 is made of metal foil, which can effectively reduce electromagnetic interference and protect the transmission stability and accuracy of the signal. The heat dissipation layer 502 is made of copper foil material, which has excellent thermal conductivity and can effectively remove the heat generated during the operation of the cable. The first insulating layer 503 is made of cross-linked polyethylene material, which has good heat resistance and electrical insulation performance, anti-aging, and moisture resistance, which can further improve the anti-aging performance of the insulated overhead cable. The second insulating layer 504 is made of polytetrafluoroethylene material, which has excellent high temperature resistance and chemical stability, and excellent insulation performance, which can further improve the high temperature resistance of the overhead cable. The flame retardant layer 505 is made of fluoroplastic, which has excellent high temperature resistance and flame retardant properties, and has good fire protection performance. When a fire occurs, in order to further reduce the impact of the fire on the overhead cables in the community, when the fire When the source burns, the high-pressure layer 507 is made of aluminum-plated polyethylene, which can delay the spread of flames to a certain extent and reduce the direct impact of fire on the surrounding environment. When the fire extends through the high-pressure layer 507 to the surface of multiple sealing sleeves 506, the multiple sealing sleeves 506 are broken by the fire, causing the flame retardant aluminum hydroxide powder inside to spray outward. The aluminum hydroxide powder can form a covering layer on the surface of the burning material, isolating the combustible from contact with oxygen, preventing the spread of flames, and thus extinguishing the fire source. Among them, the sealing sleeve 506 is made of a rubber material with strong sealing performance, which can seal the aluminum hydroxide powder. By arranging the aluminum hydroxide powder inside the multiple sealing sleeves 506, the aluminum hydroxide powder is evenly arranged inside the cable, further improving the flame retardant performance of the outdoor overhead cable. In addition, in order to further strengthen the strength of the outdoor overhead cable, the mechanical strength of the cable is further improved by setting the reinforcement layer 508. The reinforcement layer 508 is woven from steel wire. The steel wire weaving can significantly improve the tensile strength of the cable, making it not easy to break when pulled by external force.

[0037] The use method and working principle of the device: When installing outdoor overhead cables in a residential area, in order to improve the wear resistance of the cables and improve their mechanical strength, since the length of the outdoor overhead cables used in the residential area is between 10m and 50m, when installing the overhead cables in the residential area, firstly, one of the connecting rings 809 is passed through the outer surface of the mounting ring 6, and then the cable outer sheath 808 is driven to pass through the mounting ring 6 and be sleeved on the outer surface of the cable, so that the two telescopic tubes 905 are both sleeved on the outer surface of the cable, and then another connecting ring 809 is sleeved on the outer surface of the mounting ring 6, so that the four limiting grooves 7 correspond to the positions of the four clamping columns 807 respectively, and then the limiting shafts 802 are pressed into the inside of the limiting grooves 7 respectively, and the four slides 803 are driven to move forward along the slide grooves 804 respectively, and then the four clamping columns 807 are driven to move to the inside of the corresponding limiting grooves 7 respectively. At the same time, during the movement of the clamping column 807, the four springs 806 are squeezed, and then the limiting shaft 802 is driven to move into the inside of the connecting tube 801. Figure 7 As shown, the outer surface of the limiting shaft 802 is provided with a circle of threads. When the threaded part moves to the inside of the connecting tube 801, the limiting shaft 802 is rotated so that the limiting shaft 802 is connected with the internal thread of the connecting tube 801, and the limiting shaft 802 is rotated to drive the clamping column 807 to move downward until the outer surface of the clamping column 807 is tightly fitted with the deepest part of the inner wall of the limiting groove 7, that is, the connection between the connecting ring 809 and the mounting ring 6 is completed, and then another connecting ring 809 can be moved to the other end of the overhead cable until the connecting ring 809 moves to the outer surface of the corresponding mounting ring 6 and is connected to the mounting ring 6 through the above steps. The movement of the connecting ring 809 causes the cable outer sheath 808 to be sleeved on the outer surface of the cable. The cable outer sheath 808 is made of polyester fiber cloth, and the polyester fiber itself has good UV resistance. , can effectively block the penetration of ultraviolet rays and prevent material degradation caused by sunlight. The molecular structure of polyester fiber makes it not easily damaged by ultraviolet rays. Since polyester fiber shows a certain stability in high temperature environment, it can work in a relatively high temperature range without deformation or loss of function due to sudden temperature changes. This makes polyester fiber fabric suitable for a variety of environments with large temperature changes, thereby effectively preventing overhead cables from being affected by temperature changes and affecting their wear resistance. Secondly, polyester fiber has high strength and toughness, so that it can still maintain its integrity when subjected to physical impact or friction, which is crucial to maintaining the safety and performance of the cable. After the wind and rain, the two air pumps 902 are started through the external control system, and the valve 903 on the surface of the air inlet pipe is opened to transport gas to the inside of the two telescopic tubes 905 respectively, where, as Fig. 9As shown, a sealing ring 906 is provided at the connection between the two telescopic tubes 905 and the cable. When gas is filled into the two telescopic tubes 905, the two telescopic tubes 905 are extended by the impact of the gas, so that the two telescopic tubes 905 move forward along the cable respectively, so as to scrape off the rainwater that penetrates from the surface of the cable outer sheath 808. At the same time, the movement of the telescopic tubes 905 makes the cable outer sheath 808 expand, so that the space between the fibers increases. The expansion changes the surface characteristics of the polyester fiber, increases the weight of the surface water droplets, and makes the water droplets slide down due to gravity. Through the movement of the telescopic tubes 905, the water source on the cable surface and the cable outer sheath 808 is removed, so as to prevent the water source from eroding the cable and reducing the wear resistance of the cable. When the rainwater is cleaned up, After that, the two air pumps 902 are started again, and the valves 903 on the surfaces of the two suction pipes are opened to draw gas into the interior of the two telescopic tubes 905 respectively. After being compressed to high pressure, the gas is discharged through the exhaust pipe, so that the two telescopic tubes 905 are shortened under the action of negative pressure and move along the cable to the outer surfaces of the two mounting rings 6 respectively. In order to further improve the stability of the overhead cables in the community, the asbestos 1 is used to effectively prevent the current leakage in the cable and ensure the safe operation of the cable. The protective layer 4 is made of polyvinyl chloride material, which can effectively prevent the accidental short circuit between the conductor 3 and the external environment and ensure the safe passage of current. The shielding layer 501 is made of metal foil, which can effectively reduce electromagnetic interference and protect the transmission stability and accuracy of the signal. The heat dissipation layer 502 is made of copper foil, which has excellent thermal conductivity and can effectively remove the heat generated by the cable during operation. The first insulating layer 503 is made of cross-linked polyethylene material, which has good heat resistance and electrical insulation performance, anti-aging and moisture resistance, and can further improve the anti-aging performance of the insulated overhead cable. The second insulating layer 504 is made of polytetrafluoroethylene material, which has excellent high temperature resistance and chemical stability, and has excellent insulation performance, which can further improve the high temperature resistance of the overhead cable. The flame retardant layer 505 is made of fluoroplastic, which has excellent high temperature resistance and flame retardant properties, and has good fire protection performance. When a fire occurs, in order to further reduce the impact of the fire on the overhead cables in the community, when the fire source burns to the high-voltage layer 507, the high-voltage layer 507 is made of aluminum-plated polyethylene, which can delay the spread of flames to a certain extent and reduce the direct impact of fire on the surrounding environment. When the fire extends through the high-pressure layer 507 to the surface of multiple sealing sleeves 506, the multiple sealing sleeves 506 are broken by the fire, causing the flame retardant aluminum hydroxide powder inside to spray outward. The aluminum hydroxide powder can form a covering layer on the surface of the burning material, isolating the combustible from contact with oxygen, preventing the spread of flames, and thus extinguishing the fire source. Among them, the sealing sleeve 506 is made of a rubber material with strong sealing performance, which can seal the aluminum hydroxide powder. By arranging the aluminum hydroxide powder inside the multiple sealing sleeves 506, the aluminum hydroxide powder is evenly arranged inside the cable.

[0038] The wiring diagram of the air pump 902 in the present invention is common knowledge in the art, and its working principle is a known technology. The model is selected according to the actual use, so the control method and wiring layout of the air pump 902 will not be explained in detail.

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

Claims

1. A wear-resistant flame-retardant insulated overhead cable, comprising asbestos (1), wherein a wire core (2) for conducting current is arranged near the center of the asbestos (1), wherein a plurality of conductors (3) for transmitting electric energy are arranged inside the asbestos (1), and the outer surfaces of the plurality of conductors (3) are all covered with a protective layer (4), and a reinforcing component (5) for improving the flame-retardant performance of the overhead cable is arranged on the outer surface of the asbestos (1); Features: Two mounting rings (6) are arranged on the outer surface of the reinforcing component (5), and two wear-resistant components (8) for improving the wear resistance of the overhead cable are arranged on the outer surfaces of the two mounting rings (6). The two wear-resistant components (8) each include a connecting ring (809), and a plurality of connecting tubes (801) are fixedly embedded in the inner walls of the two connecting rings (809). A cable outer sheath (808) for protecting the overhead cable is arranged between the outer surfaces of the two connecting rings (809), and the inner walls of the plurality of connecting tubes (801) are fixedly embedded in the inner walls of the two connecting rings (809). A limit shaft (802) is provided on each of the parts, two slide grooves (804) are provided on the inner walls of the plurality of connecting tubes (801), two adjacent slide grooves (804) form a group, a slide plate (803) is movably connected between the inner walls of each group of slide grooves (804), a telescopic rod (805) is fixed on the outer surfaces of the plurality of slide plates (803), a spring (806) is provided on the outer surfaces of the plurality of telescopic rods (805), and a clamping column (807) is fixedly installed on one end of the plurality of telescopic rods (805).

2. The wear-resistant flame-retardant insulated overhead cable according to claim 1, characterized in that: The inner walls of the two mounting rings (6) are each provided with a plurality of limit grooves (7); the two mounting rings (6) slide on the inner walls of the two connecting rings (809) respectively; the inner walls of the plurality of slide plates (803) are rotatably connected to the outer surfaces of the plurality of limit shafts (802) respectively; and one end of the plurality of springs (806) is fixedly connected to the outer surfaces of the plurality of slide plates (803) respectively.

3. The wear-resistant flame-retardant insulated overhead cable according to claim 2, characterized in that: The other ends of the plurality of springs (806) are respectively fixedly connected to one ends of the plurality of clamping columns (807), and the plurality of clamping columns (807) slide on the inner walls of the plurality of limiting grooves (7), respectively. The outer surfaces of the two connecting rings (809) are both provided with cleaning components (9) for cleaning water sources on the surface of the overhead cable, and the two cleaning components (9) both include a mounting frame (901).

4. The wear-resistant flame-retardant insulated overhead cable according to claim 3, characterized in that: The outer surfaces of the two mounting frames (901) are respectively fixedly connected to the outer surfaces of the two connecting rings (809), and the inner walls of the two mounting frames (901) are both provided with air pumps (902) for air suction and air delivery.

5. The wear-resistant flame-retardant insulated overhead cable according to claim 4, characterized in that: Valves (903) are provided on the outer surfaces of the air inlet pipe and the air outlet pipe of the two air pumps (902), and connecting pipes (904) for conveying gas are fixedly embedded in the inner walls of the two connecting rings (809), and one end of the air inlet pipe and the air outlet pipe of the two air pumps (902) respectively penetrates into the interior of the two connecting pipes (904).

6. The wear-resistant flame-retardant insulated overhead cable according to claim 5, characterized in that: The outer surfaces of the two connecting rings (809) are both provided with telescopic tubes (905) for cleaning foreign matter, the inner walls of the two telescopic tubes (905) are both provided with sealing rings (906), and the two sealing rings (906) are both made of rubber material. One end of the two connecting tubes (904) respectively penetrates into the interior of the two telescopic tubes (905).

7. The wear-resistant flame-retardant insulated overhead cable according to claim 6, characterized in that: The reinforcing component (5) comprises a shielding layer (501) for preventing internal signal leakage of the cable, the shielding layer (501) is connected to the asbestos (1) via an external metal connector, and a heat dissipation layer (502) for cooling the overhead cable is arranged on the outer surface of the shielding layer (501).

8. The wear-resistant flame-retardant insulated overhead cable according to claim 7, characterized in that: The outer surface of the heat dissipation layer (502) is provided with a first insulating layer (503) for preventing current leakage between the cable and the external environment, the outer surface of the first insulating layer (503) is provided with a second insulating layer (504) for preventing external electromagnetic interference with overhead cable signals, and the outer surface of the second insulating layer (504) is provided with a flame retardant layer (505).

9. The wear-resistant flame-retardant insulated overhead cable according to claim 8, characterized in that: The outer surface of the flame retardant layer (505) is provided with a plurality of sealing sleeves (506) for placing flame retardant powder, the outer surface of the flame retardant layer (505) is provided with a high pressure layer (507), the outer surface of the sealing sleeve (506) is provided with a reinforcement layer (508) for improving the mechanical strength of the overhead cable, and the reinforcement layer (508) is made of steel wire material.

10. The wear-resistant flame-retardant insulated overhead cable according to claim 9, characterized in that: The outer surface of the reinforcement layer (508) is provided with an outer protective layer (509) for improving the safety of the overhead cable, the inner walls of the two mounting rings (6) are fixedly connected to the outer surface of the outer protective layer (509) by hot melt adhesive, and the two telescopic tubes (905) are arranged inside the cable outer sheath (808).

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