Device and method for overhauling high-voltage line

Abstract

The invention belongs to the technical field of high-voltage line detection, and discloses a device and method for overhauling a high-voltage line, the device comprises a rack and a detection assembly arranged on the rack, the detection assembly comprises a support rod, and the support rod is rotatably arranged on the rack; the rotating shaft is arranged on the supporting rod in a sliding manner; the detection roller is rotationally connected with the rotating shaft, and the detection roller is matched with the cable; one end of the connecting rod is fixedly connected with the rotating shaft; the extrusion plate is fixedly connected with the free end of the connecting rod; a coating is arranged in the air bag, and the air bag is arranged below the extrusion plate; one end of the material spraying pipe is fixedly connected with the rotating shaft, and the material spraying pipe is communicated with the air bag through a pipeline; the driving unit comprises an air cylinder and a driving rod, the air cylinder is arranged on the rack, a piston rod of the air cylinder is rotationally connected with one end of the driving rod, and the free end of the driving rod is rotationally connected with the supporting rod; the problem that an existing detection device is inaccurate in detection is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of high-voltage electric wire detection, and specifically relates to a device and method for inspecting and repairing high-voltage lines. Background Art

[0002] Referring to a cable insulation aging detection device with the existing publication (announcement) number CN111308273A, in order to ensure that the cable can work safely and effectively, the outer layer of most cables is composed of a thick insulation layer. In the pump station of the old substation in the mine, the high-voltage line will cause problems such as line aging and insulation layer damage due to the long-term harsh working environment. These problems will not only reduce the efficiency of power transmission, but also cause safety accidents such as short circuits, tripping and even fires, affecting the normal production and operation safety of the mine. Therefore, it is necessary to regularly inspect and maintain the high-voltage lines to promptly discover and repair potential fault hazards and ensure the safety of mine production and personnel.

[0003] Referring to the background technology in the specification of the existing publication (announcement) number CN116660789A, during the manufacturing process, the cable insulation material may have residual bubbles, wrinkles or other impurities caused by insulation aging during operation, which may cause insulation defects. These weak points often first produce partial discharge. Although the magnitude of the partial discharge is very small and the short-term existence will not cause the entire insulation to break down immediately, under long-term working voltage, partial discharge will cause the insulation defects to gradually expand, and finally cause the entire insulation to break down, resulting in accidents.

[0004] Referring to the document with the existing publication (announcement) number CN116660789A, an intelligent live detection device for cables is disclosed, including an outer cylinder, a first electromagnet, a permanent magnet, a cylinder, a folding sleeve, an inner cylinder and a conductive ring, the outer cylinder is provided with an opening for unfolding the outer cylinder, the opening is provided with a detachable Velcro, the conductive ring is fixedly connected to the outer cylinder, the cylinder, the folding sleeve and the first electromagnet are fixedly arranged on the outer cylinder, the cylinder is provided with a pigment, and the first electromagnet and the conductive ring are connected by a first wire. The detection device is operated by slowly sliding the outer cylinder down in accordance with the cable, when the cable leaks electricity, the current is transmitted through the conductive ring, so that the conductive ring transmits the current to the first electromagnet through the first wire, the first electromagnet is energized to attract the permanent magnet, so that the permanent magnet moves toward the cylinder, and then the permanent magnet drives the piston rod of the cylinder to move toward the cylinder, and then the pigment in the cylinder is squeezed out and sprayed onto the cable, so that the operator can check the leakage position of the cable according to the cable.

[0005] Although the weak points of the cable folds will produce partial discharge, there are still other discharge magnetic field interferences around the cable, which come from the electromagnetic activities of other parts of the cable itself or other nearby electrical equipment. These additional discharge magnetic fields will be mixed with the signals generated by the partial discharge, making it difficult for the detection device to accurately distinguish and locate the true partial discharge position. Therefore, the surrounding electromagnetic interference will affect the accuracy of the conductive ring detection in the above-mentioned detection device, so that the conductive ring may not be able to transfer the partial discharge current generated by the weak point to the electromagnet, thereby affecting the judgment of the weak leakage position of the cable. At the same time, the external magnetic field will also interfere with the permanent magnet, so that the permanent magnet may not be able to move, which will cause the paint in the cylinder not to be squeezed out and sprayed onto the cable, affecting the identification of the fault location. Summary of the invention

[0006] The purpose of this solution is to provide a device for inspecting and repairing high-voltage lines to solve the problem of inaccurate detection by existing detection devices.

[0007] In order to achieve the above object, the present invention provides a device for repairing a high voltage line, comprising a frame and a detection component arranged on the frame, wherein the detection component comprises: A support rod, the support rod is rotatably mounted on the frame; A rotating shaft, wherein the rotating shaft is slidably disposed on the supporting rod; A detection roller, the detection roller is rotatably connected to the rotating shaft, and the detection roller is arranged in cooperation with the cable; A connecting rod, one end of which is fixedly connected to the rotating shaft; An extrusion plate, wherein the extrusion plate is fixedly connected to the free end of the connecting rod; An airbag, wherein a coating is provided inside the airbag, and the airbag is arranged below the extrusion plate; A material spraying pipe, one end of which is fixedly connected to the rotating shaft, and the material spraying pipe is connected to the airbag through a pipeline; A driving unit is used to drive the support rod to rotate circumferentially.

[0008] The principle of this scheme is that when testing the cable, the support rod is driven to rotate circumferentially by the driving unit. When the detection roller rotates to contact the surface of the cable, if the cable surface is smooth (i.e., there are no wrinkles or weak points), the cable surface will resist the detection roller, so that the shaft and the connecting rod connected to the shaft will be away from the airbag, and the paint in the airbag will not flow out. If the surface of the cable is wrinkled (weak point position), the cable surface is uneven. When the detection roller rotates to contact this position, the concave part will not resist the detection roller, so that the extrusion plate, the detection roller and the connecting rod move downward under the action of gravity, thereby squeezing the airbag, so that the paint in the airbag is squeezed out to the spray pipe, and then sprayed at the weak point position.

[0009] The effects of this solution are as follows: (1) The driving unit drives the support rod to rotate circumferentially, so that the detection roller can contact the cable surface and respond according to the flatness of the cable surface to determine whether there are wrinkles and weak points on the cable surface. When the cable surface is smooth, the detection roller will not squeeze the airbag and the paint will not flow out; when there are wrinkles or weak points on the cable surface, the detection roller will move down under the action of gravity, and the extrusion plate will squeeze the airbag, so that the paint is squeezed out and sprayed on the weak point, thereby accurately marking the position that needs to be repaired. The above setting can reduce the detection error caused by electromagnetic interference around the cable. And because the detection roller directly contacts the surface of the cable instead of locating the position by generating local discharge at the weak point, the device can more accurately detect the uneven wrinkle position on the cable. (2) In this solution, even if there are dust impurities or snow on the cable surface, these foreign objects will make the cable surface uneven, but they will cause the local position of the cable to bulge instead of sink. This ensures that even if the detection roller contacts these positions, the paint in the airbag will not be squeezed out, resulting in incorrect marking of the position.

[0010] Furthermore, the detection component also includes a supporting plate, which is fixed on the supporting rod and arranged below the airbag. The supporting plate is provided with a through hole, the connecting rod passes through the through hole, and the connecting rod is provided with a spring, and both ends of the spring are respectively in contact with the extrusion plate and the supporting plate.

[0011] The principle and effect of this scheme are as follows: (1) Since the gravity of the extrusion plate, the detection roller and the connecting rod is solely relied on, the centrifugal force generated by the rotation of the support rod will cause the extrusion force to be too small and unstable. Therefore, a bearing plate and a spring are set to solve the above problems. In this scheme, under normal circumstances, when the detection roller rotates to contact the cable, the detection roller, the connecting rod and the extrusion plate move upward, causing the spring to be stretched. When a concave position appears on the surface of the cable, the detection roller loses the resistance of the cable, and the extrusion plate squeezes the airbag under the drive of the spring, so that the paint in the airbag is squeezed out. (2) Since the depression at the position of the cable wrinkle is generally not very obvious, it is generally a slight depression, and it is difficult to accurately judge this position using gravity. This scheme uses the resilience of the spring to respond to the changes in this slight depression, making the detection roller detection more accurate and sensitive.

[0012] Furthermore, the detection component also includes a balancing ball, which is slidably arranged on the support rod. The balancing ball is connected to a pull rope, and the free end of the pull rope is fixedly connected to the extrusion plate.

[0013] The principle and effect of this solution are as follows: during the rotation of the support rod, the extrusion plate, the detection roller and the connecting rod will be squeezed by the centrifugal force to squeeze the airbag, so a balancing ball is provided to offset the influence of the centrifugal force. When the support rod rotates, the balancing ball is thrown out, so that the extrusion plate is pulled in the opposite direction by pulling the pull rope, thereby preventing the extrusion plate from being squeezed by the centrifugal force to squeeze the airbag.

[0014] Furthermore, the support rod is provided with a first slide groove and a second slide groove, the connecting rod is slidably connected to the first slide groove, and the balancing ball is slidably connected to the second slide groove; a support seat is provided on the frame, the support seat is rotatably connected to a support arm, the support rod is provided with a third through groove, and the free end of the support arm is slidably provided in the third through groove.

[0015] The principle and effect of this solution are as follows: (1) The first slide groove and the second slide groove respectively provide positioning and guiding functions for the movement of the connecting rod and the balancing ball to prevent the two from dislocating during the movement. (2) The support arm, the support seat and the third through groove provide support and limit functions for the rotation of the support rod.

[0016] Furthermore, the driving unit includes a cylinder and a driving rod, wherein the cylinder is arranged on a frame, a piston rod of the cylinder is rotatably connected to one end of the driving rod, and a free end of the driving rod is rotatably connected to a support rod.

[0017] The principle and effect of this scheme are as follows: (1) The cylinder piston rod, the driving rod and the support rod constitute a crank rocker structure. When the cylinder piston rod is extended to the maximum stroke, the support rod rotates in an area B; when the cylinder piston rod is retracted to the maximum stroke, the support rod rotates in an area A, so the support rod rotates within the two motion trajectories of B and A. The junction of area B and area A is exactly the contact position between the detection roller and the cable. According to the principle of the crank rocker structure, the area of ​​area B is larger than that of area A. Since the rotation speed of the support rod in area A is greater than that in area B, when the detection roller rotates to area B, due to its slower rotation speed, it is subject to a smaller centrifugal force. At this time, the detection roller rolls in contact with the surface of the cable, thereby detecting the surface of the cable to avoid collision with the cable due to excessive rotation speed and large centrifugal force, causing the cable insulation layer to dent. (2) Compared with the existing technology, such as using a motor to directly drive the support rod to rotate, this solution can achieve the change of the rotation speed of the support rod in different areas by utilizing the crank rocker structure, that is, the cable detection is performed at a slower rotation speed in area B, avoiding damage to the cable that may be caused by high-speed rotation. At the same time, since the rotation speed of the support rod naturally slows down in area B, the contact between the detection roller and the cable is gentler and the fit with the cable surface is higher, making the detection more accurate.

[0018] Furthermore, the free end of the support rod is rotatably connected to a knocking roller, the diameter of the knocking roller is greater than the diameter of the detection roller, and the knocking roller is a knocking roller made of a flexible material.

[0019] The principle and effect of this scheme are as follows: (1) When it snows, the snow accumulates and adheres to the cable, forming an insulating layer. The current transmitted in the cable generates heat, and the temperature inside the cable rises. Since the cable material usually has the characteristic of thermal expansion, the increase in internal temperature will cause the cable to expand, while the low temperature of the external snow limits the expansion of the cable. The uneven thermal stress caused by the temperature difference between the inside and the outside will cause uneven deformation of the cable surface. With the change of temperature and the pressure of the snow, the cable insulation layer gradually forms wrinkles under the combined effect of mechanical stress and thermal stress, which in turn causes local discharge at the weak points of the wrinkles. At the same time, when inspecting the cable on snowy days, the snow on the cable should be cleared in advance. Therefore, this scheme removes snow by setting a knocking roller. (2) Since the knocking roller is connected to the other end of the support rod, when the knocking roller rotates to area A, due to the quick return characteristics of the crank rocker, its rotation speed is relatively fast. Under the action of large centrifugal force, at the junction of area A and area B (i.e., the contact position between the knocking roller and the cable), the knocking roller will quickly hit the cable, causing the cable to vibrate, thereby shaking off the snow on the cable. (3) Compared with directly using a motor to drive the support rod, this scheme uses a crank rocker structure, which will produce two different speed and centrifugal force changes, thereby cooperating with the detection roller and the knocking roller to achieve snow removal and detection functions. Direct motor drive can only achieve one of the functions. Even through the change of motor speed, the above two functions cannot be achieved, because the motor speed can only be adjusted to a limited extent, and there will be a delay in the change of its speed. The moment when it can no longer change, a large torque is generated to make the knocking roller obtain a large centrifugal force, and it is impossible to simulate the acceleration and deceleration effects of the crank rocker structure in different areas. (4) The diameter of the knocking roller is larger than that of the detection roller, so that the knocking roller can press down on the cable when it hits it. After the knocking roller is away from the cable, the cable amplitude is larger to improve the effect of shaking off the snow. At the same time, the knocking roller is set to a flexible material to reduce hard impact and avoid damaging the cable.

[0020] Furthermore, the support rod is provided with a first through slot and a second through slot, and the knocking roller and the rotating shaft are respectively arranged in the first through slot and the second through slot, and are respectively locked by locking bolts.

[0021] The principle and effect of this solution are as follows: (1) Since the mine power supply field will use cables of different specifications according to your power supply needs, resulting in different cable thicknesses (cross-sectional areas), this solution sets the first through groove and the second through groove so that the knocking roller and the detection roller connected to the rotating shaft can slide in the first through groove and the second through groove respectively, so that they can be adjusted according to cables of different specifications, thereby allowing the knocking roller and the detection roller to remove snow and detect cables of different specifications. (2) Compared with the detection device in the prior art that can only detect cables of specific specifications, this solution can meet the detection needs of cables of various specifications in the mine, avoiding the need to purchase new equipment due to changing cable specifications, and greatly reducing costs.

[0022] Furthermore, it also includes a limit plate, which is provided with an arc-shaped groove. The limit plate is slidably connected to a support column, and the free end of the support column is fixedly connected to the frame; the limit plate is locked with the support column by a locking bolt.

[0023] The principle and effect of this scheme are as follows: (1) Since the knocking roller will cause the cable to shake and swing when it knocks on the cable, the knocking roller will not come into contact with the cable surface when it knocks on the cable next time, resulting in failure of snow removal. At the same time, if the cable shakes and swings, the detection roller will not be able to roll in contact with the cable surface, resulting in erroneous marking. Therefore, a limit plate is set to place the cable at the position to be knocked in an arc-shaped groove, thereby limiting the vibration amplitude of the cable. (2) In this scheme, the curvature radius of the arc-shaped groove can be set to be equal to the curvature radius of the cable to be tested, so as to clamp the cable and prevent the cable from swinging excessively.

[0024] Furthermore, it also includes two groups of symmetrically arranged drive components, which are arranged on the frame. The drive components include tracks and drive rollers. The drive rollers are connected to drive motors. The drive rollers are engaged with the inner sides of the tracks, and the outer sides of the tracks are coordinated with cables.

[0025] The principle and effect of this solution are: this is the existing technology, which drives the driving roller to rotate by driving the motor, thereby driving the track to move, and the two sets of tracks can clamp the circular cable on its surface and move it, thereby driving the entire device for inspecting the high-voltage line forward along the cable, allowing the device to detect while knocking snow.

[0026] A method for repairing a high-voltage line includes applying a device for repairing a high-voltage line, including the following steps: Step S10: manually clearing away snow from a section of the cable to be tested, placing the device for inspecting high-voltage cables on the cable, and clamping the cables with crawlers on both sides; Step S20: Control the driving roller to rotate so that the crawler drives the device for repairing the high-voltage line to move along the cable; Step S30: Control the cylinder to start, periodically extend and retract the piston rod of the cylinder, and rotate the support rod; Step S40: In the step S30, when the piston rod of the cylinder is extended, the detection roller rolls in contact with the surface of the cable to detect wrinkle weak points on the cable surface, and when wrinkle weak points appear on the cable surface, paint is sprayed on the position to mark it; Step S50: In step S30, when the piston rod of the cylinder is retracted to the maximum stroke, the knocking roller strikes the surface of the cable with the maximum centrifugal force to knock and shake off the snow on the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The structure of a device for repairing high voltage lines according to the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of a device for repairing high voltage lines according to the present invention is shown in FIG. Figure 2 ; Figure 3 It is a schematic diagram of the internal structure of the support rod and the detection roller of the present invention.

[0028] The figure marks in the drawings of the specification include: frame 1, support seat 11, support arm 12, detection assembly 2, support rod 21, rotating shaft 22, detection roller 23, connecting rod 24, extrusion plate 25, airbag 26, spray pipe 27, bearing plate 28, spring 29, balancing ball 210, pull rope 211, cylinder 212, drive rod 213, first through slot 214, second through slot 215, third through slot 216, knocking roller 3, limit plate 4, support column 41, drive assembly 5, crawler track 51, drive roller 52, cable 6. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the concept and technical effects of the present invention in combination with the embodiments, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention: Example: See also Figure 1-Figure 3A device for inspecting and repairing a high-voltage line comprises a frame 1, in which a cable 6 is passed through the frame 1; a detection assembly 2 is arranged on the frame 1, and the detection assembly 2 comprises a support rod 21 and a detection roller 23, a second through slot 215 is provided at one end of the support rod 21, a rotating shaft 22 is slidably arranged in the second through slot 215, and the rotating shaft 22 is locked in the second through slot 215 by a locking bolt, the rotating shaft 22 is rotatably connected with the detection roller 23, and the detection roller 23 is arranged in cooperation with the cable 6, and the positions of the rotating shaft 22 and the detection roller 23 on the second through slot 215 are fixed by sliding in the second through slot 215 and tightening the locking bolt, so that the detection roller 23 can be adjusted according to cables 6 of different specifications, and thus the detection roller 23 can detect cables 6 of different specifications. The rotating shaft 22 is fixedly connected to a connecting rod 24 (the connecting end of the connecting rod 24 and the rotating shaft 22 is provided with a ring having the same curvature radius as the rotating shaft 22, so that it is locked and fixed to the rotating shaft 22 through the ring), the support rod 21 is provided with a first slide groove (not shown in the figure), the connecting rod 24 is slidably connected to the first slide groove, and the first slide groove is used to provide positioning and guiding functions for the movement of the connecting rod 24, the free end of the connecting rod 24 is fixedly connected to an extrusion plate 25, an air bag 26 is provided below the extrusion plate 25, and a paint is provided in the air bag 26, the paint adopts a striking color such as red, etc., the air bag 26 is connected to a spray pipe 27 through a pipeline, the free end of the spray pipe 27 is fixed on the rotating shaft 22, and is arranged vertically downward so that the discharge port of the spray pipe 27 is aligned with the cable 6.

[0030] It also includes a driving unit arranged on the frame 1, and the driving unit is used to drive the support rod 21 to rotate circumferentially. The driving unit includes a cylinder 212 and a driving rod 213. The cylinder 212 is arranged on the frame 1, and the piston rod of the cylinder 212 is rotatably connected (hinged) to one end of the driving rod 213, and the free end of the driving rod 213 is rotatably connected to the support rod 21. A support seat 11 is provided on the frame 1, and the support seat 11 is rotatably connected to a support arm 12. The support rod 21 is provided with a third through groove 216, and the free end of the support arm 12 is slidably arranged in the third through groove 216. The support arm 12, the support seat 11 and the third through groove 216 provide support and limiting functions for the rotation of the support rod 21, and the piston rod of the cylinder 212, the driving rod 213 and the support rod 21 constitute a crank rocker structure. Here, it should be noted that the hinge point between the drive rod 213 and the support rod 21 can be obtained by technicians in this field through a limited number of experimental measurements. In short, the piston rod of the cylinder 212, the drive rod 213 and the support rod 21 constitute a crank rocker structure.

[0031] When the cable 6 needs to be inspected, the area of ​​rotation of the support rod 21 is B when the piston rod of the cylinder 212 extends to the maximum stroke; the area of ​​rotation of the support rod 21 is A when the piston rod of the cylinder 212 retracts to the maximum stroke, so the support rod 21 rotates within the two motion trajectories of B and A. The junction of the B area and the A area is exactly the contact position between the detection roller 23 and the cable 6. According to the principle of the crank rocker structure, the area of ​​the B area is larger than the area of ​​the A area. Since the rotation speed of the support rod 21 in the A area is greater than its rotation speed in the B area. Therefore, when the detection roller 23 rotates to the B area, due to its slower rotation speed, it is subject to a smaller centrifugal force. At this time, the detection roller 23 rolls in contact with the surface of the cable 6, thereby inspecting the surface of the cable 6 to avoid collision with the cable 6 due to excessive rotation speed and large centrifugal force, causing the insulation layer of the cable 6 to sag. When the detection roller 23 contacts the surface of the cable 6, if the surface of the cable 6 is smooth (i.e., there are no wrinkles or weak points), the surface of the cable 6 will resist the detection roller 23, so that the shaft 22 and the connecting rod 24 connected to the shaft will be away from the airbag 26, and the paint in the airbag 26 will not flow out. If the surface of the cable 6 is wrinkled (weak point position), it means that the surface of the cable 6 is uneven. When the detection roller 23 rotates to contact this position, the concave part will not resist the detection roller 23, so that the extrusion plate 25, the detection roller 23 and the connecting rod 24 move downward under the action of gravity, thereby squeezing the airbag 26, so that the paint in the airbag 26 is squeezed to the spray pipe 27, and then sprayed on the weak point position of the cable 6, thereby marking the position.

[0032] See also Figure 3 , since the depression of the fold position of the cable 6 is generally not very obvious, it is generally a slight depression, and it is difficult to accurately judge this position using gravity. And because the gravity of the extrusion plate 25, the detection roller 23 and the connecting rod 24 alone will cause the centrifugal force generated by the rotation of the support rod 21, resulting in too small and unstable extrusion force. Therefore, the detection component 2 also includes a bearing plate 28, which is fixedly arranged on the support rod 21, and the bearing plate 28 is arranged below the airbag 26. The bearing plate 28 is provided with a through hole, and the connecting rod 24 passes through the through hole. The connecting rod 24 is penetrated by a spring 29, and the two ends of the spring 29 are respectively in contact with the extrusion plate 25 and the bearing plate 28. Under normal circumstances, when the detection roller 23 rotates to contact with the cable 6, the detection roller 23, the connecting rod 24 and the extrusion plate 25 move upward, so that the spring 29 is stretched. When a concave position appears on the surface of the cable 6, the detection roller 23 loses the resistance of the cable 6, and the squeezing plate 25 is driven by the spring 29 to squeeze the airbag 26, so that the paint in the airbag 26 is squeezed out.

[0033] Furthermore, since the squeezing plate 25, the detection roller 23 and the connecting rod 24 will be squeezed by the centrifugal force to squeeze the airbag 26 during the rotation of the support rod 21, a balancing ball 210 is provided to offset the influence of the centrifugal force. The balancing ball 210 is slidably arranged on the support rod 21, and the support rod 21 is provided with a second slide groove, and the balancing ball 210 is slidably connected to the second slide groove, and the second slide groove provides positioning and guiding for the movement of the balancing ball 210. The balancing ball 210 is connected to a pull rope 211, and the free end of the pull rope 211 is fixedly connected to the squeezing plate 25. When the support rod 21 rotates, the balancing ball 210 is thrown out, so that the squeezing plate 25 is pulled in the opposite direction by pulling the pull rope 211, so as to prevent the squeezing plate 25 from squeezing the airbag 26 under the centrifugal force.

[0034] When it snows, snow accumulates and adheres to the cable 6, forming a heat insulation layer. The current transmitted in the cable 6 generates heat, and the temperature inside the cable 6 rises. Since the material of the cable 6 usually has the characteristic of thermal expansion, the increase in the internal temperature will cause the cable 6 to expand, while the low temperature of the external snow limits the expansion of the cable 6. The uneven thermal stress caused by the temperature difference between the inside and the outside will cause uneven deformation of the surface of the cable 6. With the temperature change and the heavy pressure of the snow, the insulation layer of the cable 6 gradually forms wrinkles under the combined action of mechanical stress and thermal stress, which in turn causes partial discharge at the weak points of the wrinkles. At the same time, when testing the cable 6 on snowy days, the snow on the cable should be cleared in advance.

[0035] A first through slot 214 is provided at the free end of the support rod 21, and a knocking roller 3 is slidably provided in the first through slot 214 (the rotating shaft of the knocking roller 3 is slidably provided in the first through slot 214, but the knocking roller 3 is rotatably connected with the rotating shaft of the knocking roller 3), and the knocking roller 3 is locked and fixed in the first through slot 214 by a locking bolt. The purpose of setting the first through slot 214 is also to adapt to cables 6 of different diameters. The diameter of the knocking roller 3 is larger than the diameter of the detection roller 23, so that the knocking roller 3 can press down the cable 6 when it hits it, and after the knocking roller 3 is away from the cable 6, the amplitude of the cable 6 is larger to improve the effect of shaking off the snow. The knocking roller 3 is a knocking roller 3 made of a flexible material (such as a knocking roller 3 made of rubber) to reduce hard impact and avoid damaging the cable 6. Since the knocking roller 3 is connected to the other end of the support rod 21, when the knocking roller 3 rotates to the A area, due to the quick return characteristics of the crank rocker, its rotation speed is relatively fast, and under the action of a large centrifugal force, at the junction of the A area and the B area (i.e., the contact position between the knocking roller 3 and the cable 6), the knocking roller 3 will quickly hit the cable 6, thereby causing the cable 6 to vibrate, and then the snow on the cable 6 will be shaken off. Compared with directly using a motor to drive the support rod, the crank rocker structure will produce two different rotation speeds and centrifugal force changes, thereby cooperating with the detection roller 23 and the knocking roller 3 respectively to achieve snow removal and detection functions. However, direct motor drive can only achieve one of the functions. Even through the change of the motor speed, the above two functions cannot be achieved, because the motor speed can only be adjusted to a limited extent, and there will be a delay in the change of its speed speed. The moment when it can no longer change, a large torque is generated to make the knocking roller 3 obtain a large centrifugal force, and it is impossible to simulate the acceleration and deceleration effects produced by the crank rocker structure in different areas.

[0036] Since the knocking roller 3 will cause the cable 6 to shake and swing when knocking the cable 6, the knocking roller 3 will not conflict with the surface of the cable 6 when knocking the cable 6 next time, resulting in failure of snow removal. At the same time, if the cable 6 shakes and swings, the detection roller 23 will not be able to roll in contact with the surface of the cable 6, resulting in an erroneous mark. Therefore, it is necessary to limit the vibration amplitude of the cable 6 after knocking. A support column 41 is provided on the frame 1, and the free end of the support column 41 is slidably connected to a limit plate 4 with an arc-shaped groove structure. The limit plate 4 is locked on the support column 41 by a locking bolt, so that the limit plate 4 can use cables 6 with different cross-sectional areas, and the curvature radius of the arc surface of the arc groove is equal to the curvature radius of the cable 6, so that the arc groove fits tightly with the outer wall of the cable 6, and the limit plate 4 places the cable 6 at the position to be knocked in the arc groove, thereby limiting the vibration amplitude of the cable 6.

[0037] It also includes two groups of symmetrically arranged drive components 5, which are symmetrically arranged on the frame 1. The drive component 5 includes a crawler 51 and a drive roller 52. The drive roller 52 is connected to a drive motor. The drive roller 52 is meshed with the inner side of the crawler 51, and the outer side of the crawler 51 is matched with the cable 6. The drive motor drives the drive roller 52 to rotate, thereby driving the crawler 51 to move, and the two groups of crawlers 51 can clamp the circular cable 6 on its surface and move it, thereby driving the entire device for inspecting the high-voltage line to move forward along the cable 6, so that the device can detect while knocking snow.

[0038] To realize the above device, the present invention also provides a method for repairing a high-voltage line, including applying a device for repairing a high-voltage line, including the following steps: Step S10: manually clearing away a section of snow on the cable 6 to be tested, placing the device for inspecting high-voltage wires on the cable 6, and making the crawlers 51 on both sides clamp the cable 6; Step S20: Control the driving roller 52 to rotate so that the crawler 51 drives the device for repairing the high-voltage line to move along the cable 6; Step S30: Control the cylinder 212 to start, and periodically extend and retract the piston rod of the cylinder 212 to rotate the support rod 21; Step S40: In the step S30, when the piston rod of the cylinder 212 is extended, the detection roller 23 rolls in contact with the surface of the cable 6 to detect wrinkle weak points on the surface of the cable 6, and when wrinkle weak points appear on the surface of the cable 6, paint is sprayed on the position to mark it; Step S50: In the step S30, when the piston rod of the cylinder 212 is retracted to the maximum stroke, the knocking roller 3 strikes the surface of the cable 6 with the maximum centrifugal force to knock and shake off the snow on the cable 6.

[0039] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A device for inspecting a high-voltage line, comprising a frame (1) and a detection component (2) arranged on the frame (1), characterized in that: The detection component (2) comprises: A support rod (21), wherein the support rod (21) is rotatably mounted on the frame (1); A rotating shaft (22), wherein the rotating shaft (22) is slidably disposed on the support rod (21); A detection roller (23), the detection roller (23) being rotatably connected to the rotating shaft (22), and the detection roller (23) being arranged in cooperation with the cable (6); A connecting rod (24), one end of which is fixedly connected to the rotating shaft (22); An extrusion plate (25), wherein the extrusion plate (25) is fixedly connected to a free end of the connecting rod (24); An airbag (26), wherein a coating is provided inside the airbag (26), and the airbag (26) is arranged below the extrusion plate (25); A material spraying pipe (27), one end of which is fixedly connected to the rotating shaft (22), and the material spraying pipe (27) is connected to the air bag (26) through a pipeline; A driving unit, wherein the driving unit is used to drive the support rod (21) to rotate in a circumferential direction.

2. A device for repairing high-voltage lines according to claim 1, characterized in that: The detection assembly (2) further comprises a bearing plate (28), wherein the bearing plate (28) is fixedly arranged on the support rod (21) and arranged below the airbag (26), wherein the bearing plate (28) is provided with a through hole, wherein the connecting rod (24) passes through the through hole, and wherein a spring (29) is passed through the connecting rod (24), wherein two ends of the spring (29) are respectively in contact with the extrusion plate (25) and the bearing plate (28).

3. The device for repairing high-voltage lines according to claim 1, characterized in that: The detection assembly (2) further comprises a balancing ball (210), wherein the balancing ball (210) is slidably disposed on the support rod (21), and the balancing ball (210) is connected to a pull rope (211), wherein a free end of the pull rope (211) is fixedly connected to the extrusion plate (25).

4. A device for repairing high-voltage lines according to claim 3, characterized in that: The support rod (21) is provided with a first slide groove and a second slide groove, the connecting rod (24) is slidably connected to the first slide groove, and the balancing ball (210) is slidably connected to the second slide groove; a support seat (11) is provided on the frame (1), the support seat (11) is rotatably connected to a support arm (12), the support rod (21) is provided with a third through groove (216), and the free end of the support arm (12) is slidably arranged in the third through groove (216).

5. The device for repairing high-voltage lines according to claim 1, characterized in that: The driving unit comprises a cylinder (212) and a driving rod (213); the cylinder (212) is arranged on the frame (1); the piston rod of the cylinder (212) is rotatably connected to one end of the driving rod (213); and the free end of the driving rod (213) is rotatably connected to the support rod (21).

6. A device for repairing high-voltage lines according to claim 5, characterized in that: The free end of the support rod (21) is rotatably connected to a knocking roller (3); the diameter of the knocking roller (3) is greater than the diameter of the detection roller (23); and the knocking roller (3) is a knocking roller (3) made of a flexible material.

7. The device for repairing high-voltage lines according to claim 5, characterized in that: The support rod (21) is provided with a first through slot (214) and a second through slot (215); the knocking roller (3) and the rotating shaft (22) are respectively arranged in the first through slot (214) and the second through slot (215), and are respectively locked by locking bolts.

8. The device for repairing high-voltage lines according to claim 1, characterized in that: It also comprises a limit plate (4), the limit plate (4) being provided with an arc-shaped groove, the limit plate (4) being slidably connected to a support column (41), the free end of the support column (41) being fixedly connected to the frame (1); the limit plate (4) being locked to the support column (41) by means of a locking bolt.

9. The device for repairing high-voltage lines according to claim 1, characterized in that: The invention also comprises two groups of symmetrically arranged drive assemblies (5), wherein the drive assemblies (5) are arranged on the frame (1), and the drive assemblies (5) comprise a crawler belt (51) and a drive roller (52), wherein the drive roller (52) is connected to a drive motor, the drive roller (52) is meshed with the inner side of the crawler belt (51), and the outer side of the crawler belt (51) is arranged in cooperation with a cable (6).

10. A method for repairing a high-voltage line, comprising applying a device for repairing a high-voltage line according to any one of claims 1 to 9, characterized in that: The steps include: Step S10: manually clearing away a section of snow on the cable to be tested (6), placing the device for inspecting high-voltage cables on the cable (6), and clamping the cable (6) with the crawlers on both sides; Step S20: controlling the driving roller (52) to rotate so that the crawler (51) drives the device for inspecting the high-voltage line to move along the cable (6); Step S30: controlling the cylinder (212) to start, and periodically extending and retracting the piston rod of the cylinder (212), so that the support rod (21) rotates; Step S40: In the step S30, when the piston rod of the cylinder (212) is extended, the detection roller (23) rolls in contact with the surface of the cable (6) to detect wrinkle weak points on the surface of the cable (6), and when wrinkle weak points appear on the surface of the cable (6), paint is sprayed on the position to mark it; Step S50: In step S30, when the piston rod of the cylinder (212) is retracted to the maximum stroke, the knocking roller (3) strikes the surface of the cable (6) with the maximum centrifugal force to knock and shake off the snow on the cable (6).

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