Cable for overhead transmission line

Abstract

The invention relates to a cable for an overhead transmission line, which is applied to a power cable, and is characterized in that wind energy is collected through a repelling chain arranged at the upper end of the cable, the inner end and the outer end of the repelling chain are inflated and swelled by utilizing the wind energy, and the swelling of an external structure of the repelling chain can realize irregular and uncertain-direction reflection of solar rays; therefore, multi-direction light stimulation is formed on birds flying around or far away, the collision rate of the birds and the cable body and the possibility of staying on the cable body can be reduced through the long-distance repelling effect, the bird repelling frame can stretch out upwards through the bulging of the internal structure, the short-distance physical repelling effect on the staying birds is achieved, and the bird repelling effect is improved. The high-altitude power transmission line bird repelling device effectively reduces damage and influence of birds on normal operation of a high-altitude power transmission line through a far bird repelling effect and a near bird repelling effect, in addition, the bulging condition of the internal structure of the repelling chain can be monitored through an indirect sensing technology, then the use condition of the repelling chain is judged, and timely manual intervention is facilitated when abnormity exists.

Description

Technical Field

[0001] The present invention relates to a cable, in particular to a cable for overhead power transmission lines applied to power cables. Background Art

[0002] With existing technologies, birds often stop and rest on overhead cables, which not only affects the efficiency of power transmission but may also cause safety accidents such as short circuits.

[0003] To solve the above problems, the Chinese patent CN117612775B specification discloses a cable suitable for photovoltaic power generation, comprising two cores, the surfaces of the two cores are wrapped with a shielding layer, the surface of the shielding layer is bonded with an insulating layer, the outer sides of the two insulating layers are sleeved with an inner shell, the outer side of the inner shell is sleeved with an outer shell, the surface of the inner shell is sleeved with a heat insulation layer, the top and bottom of the surface of the heat insulation layer are both installed with arc-shaped limit seats, and the middle of the upper arc-shaped limit seat is embedded with an upper electric heating wire. The present invention utilizes the odor emitted by the internal substance of the odor element package to emit outward from the air vent, which plays a role in repelling birds with odor, and uses the unpleasant odor to disperse birds, so that birds will not stay on the surface of the cable for a long time, preventing birds from standing and causing pressure on the cable to affect the structural strength of the cable, and preventing the feces discharged by birds from adhering to the surface of the cable and corroding it, thereby improving the service life of the cable.

[0004] The bird-proof spikes are installed on the upper part of the crossarms of the power transmission and transformation line equipment to prevent birds from building nests on the power towers. They are composed of 24 steel wires and are spread out. They effectively prevent birds from fighting, staying, and nesting directly above the porcelain bottle strings of the conductors, ensuring the smooth flow of the lines and reducing the occurrence of power outages. They have obvious effects in driving away birds and preventing bird damage, do not harm the survival of birds, and realize the principle of harmonious coexistence between humans and birds.

[0005] However, existing bird-proof spikes are generally used on steel towers and are difficult to apply to the laid cables themselves. Therefore, a large number of birds still stay on overhead cables for a long time. In addition, since some overhead cables are laid densely, birds are also prone to colliding with cables when flying. Therefore, the problems of bird electric shock and power short circuit caused by bird collision and resting need to be improved urgently. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that overhead power transmission lines often suffer from cable short circuits and burns due to birds flying, hitting or stopping on them.

[0007] In order to solve the above problems, the present invention provides a cable for overhead power transmission lines, comprising a cable body, wherein a drive-away chain is provided at the upper end of the cable body, wherein the drive-away chain comprises a plurality of long tubes arranged along the length direction of the cable, and adjacent long tubes are fixedly connected by chains, wherein the lower ends of some long tubes are fixedly connected to a pair of straps tied to the outer ends of the cable body, wherein the long tubes are provided with a plurality of air filling assemblies distributed perpendicularly to the center line thereof, wherein the air filling assemblies comprise an air collecting hood, a duct, and an inner bag and an outer bag located on the inner and outer sides of the long tube, wherein the air collecting hood and the duct are fixedly connected to the The cylindrical side end, and the center lines of the two are on the same straight line, one end of the wind collecting hood is trumpet-shaped and located on the outside, and the other end is located on the inside of the long tube and fixedly connected to one port of the inner bag, one end of the conduit is located on the inside of the long tube and fixedly connected to the other port of the inner bag, and the other end of the conduit is located on the outside and fixedly connected to the port of the outer bag, the wind collecting hoods in adjacent air filling assemblies are respectively located on different sides of the long tube, and a bird-repellent rack is also provided inside the long tube, which is located directly above the inner bag, and a strip hole is opened at the upper end of the long tube, which is directly above the bird-repellent rack.

[0008] As a further supplement to this application, the bird-repellent frame includes a cross bar, the upper end of which is fixedly connected to a plurality of spikes, and the inner top surface of the long tube is fixedly connected to a plurality of limit blocks corresponding one to one to the spikes, and the limit blocks are provided with through holes communicating with the strip holes.

[0009] As a further supplement to this application, both ends of the cross bar are provided with limit rods, and a slide is opened on the limit rod. The cross bar is slidably connected to the inside of the slide, and the upper end of the limit rod is fixedly connected to the inner top surface of the long tube.

[0010] As a further supplement to the present application, in the initial state, the cross bar contacts the lower inner wall of the slide, and the upper end of the spike is located inside the through hole of the limit block.

[0011] As a further supplement to the present application, the outer bag includes a flexible bag body, and a plurality of evenly distributed reflective sheets are fixedly connected to the outer surface of the flexible bag body.

[0012] As a further supplement to the present application, both ends of the long tube are provided with moisture drainage holes communicating with the outside world, and the moisture drainage holes are close to the inner bottom surface of the long tube.

[0013] As another improvement of the present application, tension sensors are provided inside the head and tail pairs of long tubes, and the pair of tension sensors are respectively fixedly connected to the inner walls of the pair of long tubes away from each other. A force belt is fixedly connected between the sensing ends of the pair of tension sensors, and the force belt moves through the moisture drainage holes on each long tube in turn, and the force belt is located on the lower side of the inner bag.

[0014] As another improved supplement to the present application, the outer cover of the tension sensor is provided with a sealing cover, which is fixedly connected to the inner wall of the long tube. A long hole is opened on the sealing cover, and the upper and lower inner walls of the long hole are fixedly connected with sealing gaskets. The force belt is slidably connected between a pair of sealing gaskets.

[0015] As another improved supplement of the present application, the force-bearing belt includes a non-elastic belt and a pair of elastic ropes, and the non-elastic belt is fixedly connected between the pair of elastic ropes, and the ends of the pair of elastic ropes away from the non-elastic belt are respectively fixedly connected to the sensing ends of a pair of tension sensors.

[0016] To sum up, the present application realizes the collection of wind energy through the repelling chain set at its upper end, and uses wind energy to inflate the inner and outer ends of the repelling chain. The bulging of its external structure can realize irregular and erratic reflection of sunlight, thereby forming multi-directional light stimulation for birds flying around or far away. Through this long-distance repelling effect, the collision rate of birds with the cable body and the possibility of staying on the cable body can be reduced. The bulging of its internal structure can make the bird-repelling frame extend upward, and realize close-range physical repelling effect on the resting birds. Through the two-way bird-repelling effects of far and near, the damage and impact of birds on the normal operation of high-altitude power transmission lines are effectively reduced. In addition, the bulging of the internal structure of the repelling chain can be monitored through indirect sensing technology, and then the usage of the repelling chain can be judged, which facilitates timely manual intervention when there is an abnormality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a perspective view of the first and second embodiments of the present application; Figure 2 Partial stereograms of the first and second embodiments of the present application; Figure 3 This is a three-dimensional diagram of the long tube in the first embodiment of this application; Figure 4 This is a front structural diagram of the long tube in the initial use state in the first embodiment of the present application; Figure 5 This is a schematic side structural diagram of the long tube in the initial state in the first embodiment of the present application; Figure 6 This is a three-dimensional diagram of the outer bag in the first embodiment of the present application; Figure 7 This is a schematic diagram of the front structure of the long tube in the first embodiment of the present application when air is entering; Figure 8 This is a front structural diagram of the long tube in the first embodiment of the present application when not in use; Figure 9 Schematic diagram of the top surface structure of the drive-off chain during laying in the first and second embodiments of the present application; Figure 10 This is a schematic diagram of the side structure of the long tube in the initial state in the second embodiment of this application Figure 1 ; Figure 11 This is a schematic diagram of the side structure of the long tube in the initial state in the second embodiment of this application Figure 2 ; Figure 12 This is a front structural diagram of the long tube in the initial use state in the second embodiment of the present application; Figure 13 This is a schematic diagram of the front structure of the long tube when air is entering in the second embodiment of the present application; Figure 14 This is a schematic diagram of the side structure of the long tube when air is entering in the second embodiment of the present application; Figure 15 This is a schematic diagram of the side structure of the force belt and the tension sensor in the second embodiment of the present application.

[0018] Description of the numbers in the figure: 1 cable body, 2 long tube, 201 strip hole, 202 moisture drainage hole, 3 strap, 4 chain, 5 wind collecting cover, 6 duct, 71 inner bag, 72 outer bag, 7201 flexible bag body, 7202 reflective sheet, 8 bird repellent frame, 81 crossbar, 82 spikes, 9 limit rod, 901 slide, 10 limit block, 11 force belt, 12 tension sensor, 13 sealing cover, 14 sealing gasket. DETAILED DESCRIPTION

[0019] Two embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] The first implementation method: The present invention provides a cable for overhead power transmission lines. Figure 1 , including a cable body 1, characterized in that: the upper end of the cable body 1 is provided with a drive chain ( Figure 1 Indicated by A in the Figure 2 The driving chain includes a plurality of long tubes 2 arranged along the length direction of the cable, and adjacent long tubes 2 are fixedly connected by chains 4. The lower ends of some long tubes 2 are fixedly connected to a pair of straps 3 tied to the outer ends of the cable body 1. The entire driving chain is tied to the upper end of the long tube 2 through multiple straps 3. In this way, when birds stay, their feet will wrap the cable body 1 and the long tube 2 together, which is convenient for driving away birds. Through the connection of the chain 4, the driving chain is in a flexible non-connected state, which is convenient for adapting to the laying of the cable body 1, and during installation, the chain 4 is kept straightened to the greatest extent, so that the long tube 2 can be kept at the upper end of the cable body 1 and is not easy to slide to its side end. In addition, under the premise of ensuring stable installation of the driving chain, the number of straps 3 is minimized as much as possible. For example, one or more long tubes 2 can be spaced between a pair of straps 3, which can reduce the workload of tying.

[0021] See also Figure 3 and Figure 4 The long cylinder 2 is provided with a plurality of air filling components distributed perpendicular to its center line. The air filling components include an air collecting hood 5, a duct 6, and an inner bag 71 and an outer bag 72 located on the inside and outside sides of the long cylinder 2. The air collecting hood 5 and the duct 6 are fixedly connected to the cylindrical side ends of the long cylinder 2, and the center lines of the two are located on the same straight line. One end of the air collecting hood 5 is trumpet-shaped and located outside, and the other end is located on the inside of the long cylinder 2 and fixedly connected to one port of the inner bag 71. One end of the duct 6 is located on the inside of the long cylinder 2 and fixedly connected to the other port of the inner bag 71. The other end of the duct 6 is located on the outside and fixedly connected to the port of the outer bag 72. A bird-repellent rack 8 is also provided inside the long cylinder 2. The bird-repellent rack 8 is located directly above the inner bag 71. The upper end of the long cylinder 2 is provided with a strip hole 201 located directly above the bird-repellent rack 8.

[0022] See also Figure 4 and Figure 5 The bird-repelling frame 8 includes a crossbar 81, the upper end of the crossbar 81 is fixedly connected to a plurality of spikes 82, the inner top surface of the long tube 2 is fixedly connected to a plurality of limit blocks 10 corresponding to the spikes 82, and the limit blocks 10 are provided with through holes communicating with the strip holes 201. Both ends of the crossbar 81 are provided with limit rods 9, and the limit rods 9 are provided with slides 901. The crossbar 81 is slidably connected to the inside of the slide 901, and the upper end of the limit rod 9 is fixedly connected to the inner top surface of the long tube 2. In the initial state, the cross bar 81 contacts the lower inner wall of the slide 901, and the upper end of the spike 82 is located inside the perforation of the limit block 10. In addition, when the drive chain is not in use, a thin rubber strip can be glued to the outer end of the long tube 2 to seal the strip hole 201, so that the spike 82 is not easily exposed to the outside world, so that the construction workers are not easily stabbed by the spike 82 when installing the drive chain. After the long tube 2 is tied and stabilized, the rubber strip can be manually torn off and combined with the Figure 8 As shown, when not in use, the outer bag 72 can be inserted into the inner bag 71 through the catheter 6 to achieve storage, making the application more neat and beautiful.

[0023] The inner bag 71 and the outer bag 72 are both made of inelastic flexible films and are initially in a relaxed drooping state. The outer bag 72 includes a flexible bag body 7201 , and a plurality of evenly distributed reflective sheets 7202 are fixedly connected to the outer surface of the flexible bag body 7201 .

[0024] Bird repelling principle: Since the repelling chain is set at high altitude along with the cable, it will be affected by strong wind from time to time. The open end of the trumpet-shaped wind collecting cover 5 is used to gather wind force, so that the wind force quickly enters the inner bag 71 and the outer bag 72 through the wind collecting cover 5, causing the two to inflate. Since the air filling component is also laid along the length direction of the cable, the multiple wind collecting covers 5 on one side of the long tube 2 will be affected by wind force at the same time, that is, the multiple inner bags 71 and the outer bags 72 will swell at the same time, and two repelling effects will be generated at this time. First, the bulging of the multiple inner bags 71 will push the bird repelling frame 8 upward, and the cross bar 81 will move up along the slide 901, pushing the tip of the spike 82 out of the strip hole 20 1 is pushed out and pierces the feet of the birds at the upper end of the long tube 2, so as to drive away the birds that are about to stay or have already stayed. This is a close-range driving effect on birds that are about to stay or have already stayed. Secondly, the bulging of the flexible bag body 7201 will cause the multiple flexible bag bodies 7201 on its outside to continuously change their directions, thereby realizing irregular and erratic reflection of sunlight, thereby forming a more comprehensive and multi-directional light stimulation for birds flying around or in the distance, so that they can change their flight direction in time, are not likely to collide with the cable body 1, and are not likely to stay on the cable body 1 actively. This is a long-range driving effect on distant birds that have not stayed.

[0025] Therefore, the present application utilizes wind energy to generate the above-mentioned two means of repelling, thereby achieving effective repelling of distant birds and birds that have already settled, so that birds actively stay away from the area where the cable body 1 is located, reducing the collision rate of distant birds with the cable body 1 and the possibility of them settling on the cable body 1, effectively reducing the damage and impact of birds on the normal operation of high-altitude power transmission lines, and at the same time, also providing reverse protection for birds from electric shock.

[0026] In addition, if Figure 2 As shown, the wind collecting covers 5 in adjacent air filling assemblies are respectively located on different sides of the long tube 2, that is, the wind collecting covers 5 and the ducts 6 are spaced apart on the same side of the long tube 2, so that when the wind blows toward the left or right side of the long tube 2, nearly half of the inner bags 71 and outer bags 72 will bulge, thereby realizing the above-mentioned two expulsion means; And, combined with Figure 1 As shown, due to the distribution of the conduit 6 on both sides of the long tube 2, for multiple cable bodies 1 laid in the same direction and at a close distance, in actual implementation, a repelling chain can be tied only on one of the cable bodies 1. Through the directional reflective operation of the repelling chain, the long-distance repelling effect on distant birds can be achieved, and the other multiple cable bodies 1 at a close distance can be protected synchronously. However, there is no short-distance repelling effect on the cable body 1 without a repelling chain, so the bird-repelling effect is weak. Those skilled in the art can make settings according to actual environmental needs. For example, if in an environment where birds are prevalent, it is recommended to set a repelling chain on each cable body 1. If in an environment with fewer birds, a repelling chain can be selected to be set on one or part of the cable bodies 1.

[0027] The diameter of common overhead transmission lines is generally between 1 cm and 2 cm. There is no strict requirement for the diameter of the long tube 2 in this application. It can be smaller than the cable body 1 or similar to the cable body 1. The long tube 2, wind collecting cover 5, duct 6, bird-repelling frame 8, limit rod 9 and other structures can be made of lightweight plastic material. The inner bag 71 and the outer bag 72 are film materials. When in use, a repelling chain is set in the necessary area where there are more birds. The repelling chain can be installed at intervals so that it is not easy to cause a weight burden on the cable body 1 while achieving bird repelling. In addition, among multiple cable bodies 1 laid in the same direction and close distance, the repelling chain can be laid at intervals on each cable body 1 in turn to further reduce the weight of the repelling chain borne by a single cable body 1. Figure 9 As shown, along the length direction of the cable, all the repelling chains are just connected front and back, forming a complete single-line repelling belt along the length direction of the cable. Even if birds stay in the blank position (the position where no repelling chain is set on the cable body 1), the birds can easily be repelled by the reflective effect of the outer bag 72 on the adjacent cable body 1, making it difficult for birds to stay for a long time.

[0028] Supplementary explanation: Of course, although the gravity effect of the structure on the cable body 1 is minimized by means of the above-mentioned material selection, installation method setting, etc., it is still not ruled out that the setting of the repelling chain will increase the cable load. Therefore, in actual use, technical personnel in this field need to evaluate the pros and cons of bird damage and cable load-bearing (because once birds stay, it will significantly increase the load on the cable, and birds are also prone to gnaw the outer layer of the cable, increasing the risk of electric shock, short circuit, etc.), weigh the pros and cons, and choose the best way, that is, whether to set up a repelling chain.

[0029] Both ends of the long tube 2 are provided with moisture-draining holes 202 that are connected to the outside world, and the moisture-draining holes 202 are close to the inner bottom surface of the long tube 2. When it rains outside, rainwater will enter the long tube 2 through the strip holes 201. At this time, the rainwater can be discharged smoothly through the moisture-draining holes 202, and it is not easy to cause rainwater to accumulate. In addition, a millimeter-level micropore can also be set at the lower end of the inner bag 71, so that the rainwater entering the inner bag 71 through the wind collecting hood 5 can also fall slowly and be discharged through the moisture-draining holes 202 (because the micropores have a small aperture and a small number, and the wind force quickly enters the inner bag 71, so the setting of the micropores is not easy to cause obvious obstruction to the inflation of the inner bag 71 and the outer bag 72).

[0030] Second implementation method: This implementation method adds the following contents based on the first implementation method: Figure 10 、 Figure 11 and Figure 12A tension sensor 12 is provided inside the head and tail pair of long tubes 2, and the pair of tension sensors 12 are respectively fixedly connected to the inner walls of the pair of long tubes 2 away from each other. A force belt 11 is fixedly connected between the sensing ends of the pair of tension sensors 12, and the force belt 11 moves through the moisture drainage hole 202 on each long tube 2 in turn. The force belt 11 is located on the lower side of the inner bag 71. The outer cover of the tension sensor 12 is provided with a sealing cover 13, which is fixedly connected to the inner wall of the long tube 2. The sealing cover 13 plays a protective role for the tension sensor 12. A long hole is opened on the sealing cover 13, and the upper and lower inner walls of the long hole are fixedly connected with a sealing gasket 14. The force belt 11 is slidably connected between the pair of sealing gaskets 14.

[0031] like Figure 15 As shown, the force belt 11 includes an inelastic belt and a pair of elastic ropes, and the inelastic belt is fixedly connected between the pair of elastic ropes, and the ends of the pair of elastic ropes away from the inelastic belt are respectively fixedly connected to the sensing ends of a pair of tension sensors 12.

[0032] In the initial state after installation, such as Figure 11 and Figure 12 As shown, the inner bag 71 is not bulged by the wind and does not produce an extrusion effect on the force belt 11. At this time, the tension of the force belt 11 on the tension sensor 12 is very small; Figure 13 and Figure 14 As shown, when the multiple inner bags 71 are inflated by air, the inflated lower ends of the inner bags 71 will squeeze the force-bearing belt 11 downward. Under the action of the multiple inner bags 71, the elastic portion of the force-bearing belt 11, i.e., the elastic rope, will be elastically stretched. At this time, the tension of the force-bearing belt 11 on the tension sensor 12 increases. The tension sensor 12 is remotely connected to the background monitoring terminal. Based on the changes in the monitored tension sensor 12 data, the usage of the repelling chain in a certain area can be remotely determined, thereby facilitating timely manual intervention. For example, if the data of the majority of tension sensors 12 in an area do not show significant fluctuations for a long period of time, it indicates abnormal usage. The repelling chain in this embodiment can be provided in two types: one is an intelligent repelling chain with a force-bearing belt 11 and tension sensors 12, and the other is a non-intelligent repelling chain without the force-bearing belt 11 and tension sensors 12 as in the first embodiment. In the same environmental area, the two types of repelling chains can be used in combination, adopting a local response to the whole approach, thereby reducing the electricity cost of the tension sensors 12 and other components.

[0033] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A cable for an overhead power transmission line, comprising a cable body (1), characterized in that: The upper end of the cable body (1) is provided with a drive-away chain, the drive-away chain includes a plurality of long tubes (2) arranged along the length direction of the cable, and adjacent long tubes (2) are fixedly connected by a chain (4), the lower ends of some of the long tubes (2) are fixedly connected with a pair of straps (3) tied to the outer ends of the cable body (1), the long tube (2) is provided with a plurality of air filling components distributed perpendicular to its center line, the air filling components include an air collecting hood (5), a duct (6) and an inner bag (71) and an outer bag (72) located on both sides of the long tube (2), the air collecting hood (5) and the duct (6) are fixedly connected to the cylindrical side end of the long tube (2), and the center lines of the two are located on the same straight line. One end of the wind collecting hood (5) is trumpet-shaped and located outside, and the other end is located inside the long tube (2) and fixedly connected to one end of the inner bag (71). One end of the conduit (6) is located inside the long tube (2) and fixedly connected to the other end of the inner bag (71). The other end of the conduit (6) is located outside and fixedly connected to the end of the outer bag (72). The wind collecting hoods (5) in adjacent air filling assemblies are respectively located on different sides of the long tube (2). A bird-repelling rack (8) is further provided inside the long tube (2), and the bird-repelling rack (8) is located just above the inner bag (71). A strip hole (201) is opened at the upper end of the long tube (2) and is located just above the bird-repelling rack (8).

2. The cable for overhead power transmission lines according to claim 1, characterized in that: The bird-repelling frame (8) comprises a crossbar (81), the upper end of which is fixedly connected to a plurality of spikes (82), and the inner top surface of the long tube (2) is fixedly connected to a plurality of limit blocks (10) corresponding one-to-one to the spikes (82), wherein the limit blocks (10) are provided with through holes communicating with the strip holes (201).

3. The cable for overhead power transmission lines according to claim 2, characterized in that: Both ends of the crossbar (81) are provided with limiting rods (9), a slideway (901) is provided on the limiting rod (9), the crossbar (81) is slidably connected to the inside of the slideway (901), and the upper end of the limiting rod (9) is fixedly connected to the inner top surface of the long tube (2).

4. The cable for overhead power transmission lines according to claim 3, characterized in that: In the initial state, the crossbar (81) contacts the lower inner wall of the slideway (901), and the upper end of the spike (82) is located inside the through hole of the limit block (10).

5. The cable for overhead power transmission lines according to claim 1, characterized in that: The outer bag (72) comprises a flexible bag body (7201), and a plurality of evenly distributed reflective sheets (7202) are fixedly connected to the outer surface of the flexible bag body (7201).

6. The cable for overhead power transmission lines according to claim 1, characterized in that: Both ends of the long tube (2) are provided with moisture-discharging holes (202) communicating with the outside world, and the moisture-discharging holes (202) are close to the inner bottom surface of the long tube (2).

7. The cable for overhead power transmission lines according to claim 6, characterized in that: Tension sensors (12) are provided inside the head and tail pairs of long tubes (2), and the pair of tension sensors (12) are respectively fixedly connected to inner walls of the pair of long tubes (2) that are away from each other. A force belt (11) is fixedly connected between the sensing ends of the pair of tension sensors (12), and the force belt (11) is movable through the moisture-discharging hole (202) on each long tube (2) in turn. The force belt (11) is located on the lower side of the inner bag (71).

8. The cable for overhead power transmission lines according to claim 7, characterized in that: The outer cover of the tension sensor (12) is provided with a sealing cover (13), the sealing cover (13) is fixedly connected to the inner wall of the long cylinder (2), a long hole is opened on the sealing cover (13), and the upper and lower inner walls of the long hole are fixedly connected with sealing gaskets (14), and the force belt (11) is slidably connected between a pair of sealing gaskets (14).

9. The cable for overhead power transmission lines according to claim 7, characterized in that: The force-bearing belt (11) comprises a non-elastic belt and a pair of elastic ropes, and the non-elastic belt is fixedly connected between the pair of elastic ropes, and one end of the pair of elastic ropes away from the non-elastic belt is fixedly connected to the sensing ends of a pair of tension sensors (12).

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