High-voltage cable fault positioning device
The high-voltage cable fault location device, designed with a rotation and speed control unit, achieves full-circumference cable detection without blind spots, improves the fault identification rate, solves the problem of detection accuracy deviation caused by sensor installation and fixation, and is suitable for high-precision detection of different cable specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUAIAN KEDA ELECTRIC
- Filing Date
- 2026-03-17
- Publication Date
- 2026-05-12
AI Technical Summary
The sensors in existing cable inspection devices are fixed in place and cannot effectively capture fault characteristics in hidden areas such as the back side, inside side, and curved sections of the cable, resulting in a low fault identification rate and making it difficult to meet the requirements of high-precision detection.
A high-voltage cable fault location device was designed. The sensor is rotated and moved along the outside of the cable by a rotating unit. The sensor is mounted to achieve full circumference coverage detection. The rotation speed is adjusted by a speed control unit to adapt to different cable diameters and ensure uniform data collection around the circumference.
It enables full-circumference cable inspection without blind spots, improves the fault identification rate, solves the problem of detection accuracy deviation under different cable specifications, and achieves high-precision full-circumference inspection effect.
Smart Images
Figure CN122017463A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of cable testing technology, specifically a high-voltage cable fault location device. Background Technology
[0002] In the field of high-voltage cable fault detection, the mainstream technical approach is a combination of "coarse localization and narrowing of the fault range + fine-tuning along the cable." Maintenance personnel first use electrical methods such as low-voltage pulse reflection and secondary pulse methods to pinpoint the fault area to a target section within tens of meters. Then, a clamp-type cable tracer, equipped with various sensors including partial discharge, acoustic-magnetic synchronous detection, and infrared thermal imaging, is installed on the outside of the cable and moves autonomously. This tracer, relying on its arc-shaped grippers and drive roller structure, can adapt to cables of different diameters. During movement, it collects discharge signals, acoustic signals, and temperature data from the cable surface to achieve preliminary fault identification. It is widely used in fault inspection work in underground pipe corridors, cable trenches, and overhead cables.
[0003] Existing cable troubleshooting devices typically use fixed-angle sensors for partial discharge and acousto-magnetic resonance (AMR) detection, with the sensor's field of view covering only the single side of the cable facing the sensor. In actual testing, the sensors cannot effectively capture key fault characteristics such as discharge acoustic waves and partial discharge signals in areas like the lower or inner side of the cable away from the sensor, as well as in concealed areas like cable bends and the inner side of joints. This makes it easy to miss hidden faults such as sheath damage and insulation aging in these areas, significantly reducing the overall cable fault identification rate and failing to meet the practical needs of high-precision fault diagnosis. Summary of the Invention
[0004] The purpose of this invention is to provide a high-voltage cable fault location device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-voltage cable fault location device, comprising: The mounting unit has a first channel that extends through the central axis of the mounting unit, allowing the mounting unit to be sleeved onto the outside of the cable. A fixing unit is installed at the end of the mounting unit and has a second channel, wherein the first channel and the second channel are connected to form a main channel; A rotating unit is mounted at the end of the mounting unit. The mounting unit can be driven by the rotating unit to rotate around its own central axis, so that the first channel rotates. The rotation speed of the mounting unit is adjustable. The speed control unit includes a walking unit, which can drive the main channel to move axially along the outer side of the cable, and the walking unit itself can move in a first direction or a second direction. The rotation speed of the installation unit can be adjusted synchronously by moving the walking unit.
[0006] Preferably, the rotating unit includes a drive gear, a rotating part, and a transmission assembly. The rotating part is composed of multiple gears of different diameters connected together and connected by a connecting shaft. The gear with the largest diameter meshes with the drive gear. The drive gear is fixedly installed at the end of the mounting unit. By driving the rotating part to rotate, the drive gear can drive the mounting unit to rotate. The transmission assembly is disposed on one side of the rotating part and includes a second gear that meshes with multiple gears in the rotating part.
[0007] Preferably, the fixing unit includes a fixing part installed on the outside of the second channel, and the fixing part has a cavity. The speed control unit also includes a positioning block and a steering structure. The positioning block is disposed in the cavity and allows the positioning block to move in the cavity in a first direction or a second direction. The walking unit includes a roller and a drive shaft. The roller can be rotated by rotating the drive shaft. One end of the drive shaft is connected to a transmission shaft through the steering structure. The transmission shaft can be driven to rotate by the drive shaft.
[0008] Preferably, the steering structure includes a first steering part and a second steering part, and both the first steering part and the second steering part are provided with a bevel gear set that meshes with each other. The bevel gear set converts the spatial direction of the rotational motion of the drive shaft, so that the rotational power of the drive shaft is transmitted to the end of the transmission shaft, thereby enabling the drive shaft to drive the transmission shaft to rotate synchronously.
[0009] Preferably, the second gear meshes with the first gear, and the first gear can be driven to rotate by the transmission shaft, causing the second gear to rotate synchronously, thereby driving the transmission shaft to rotate through the drive shaft, causing the rotating part to drive the drive gear to rotate.
[0010] Preferably, the number of positioning blocks is set to two, and both ends of the drive shaft pass through the positioning blocks, so that when the positioning blocks move in the cavity of the fixed part, they drive the second connecting part to move synchronously. The steering structure is connected to a first telescopic rod, and the steering structure can change its own length according to the movement of the positioning blocks, so that the steering structure can move synchronously with the drive shaft.
[0011] Preferably, a first inclined block is installed on one side of the positioning block, and a second inclined block is provided in the cavity of the fixing part. A movable shaft is connected to one side of the second inclined block, and the movable shaft is connected to one side of the transmission assembly. The corresponding surfaces of the first and second inclined blocks are set as matching inclined surfaces. By moving the positioning block toward the first direction, the first inclined block moves toward the first direction, and the second inclined block moves toward the direction of the rotating unit, so that the movable shaft pushes the transmission assembly to move along the outside of the transmission shaft.
[0012] Preferably, a groove is provided on the outer side of the drive shaft, and a protrusion is provided at the connection between the drive assembly and the groove. The protrusion is located in the inner cavity of the groove. By moving the drive assembly, the protrusion can be moved along the groove, so that the drive assembly rotates around the drive shaft.
[0013] Preferably, the bevel gear set of the drive shaft is connected to the first steering part, the bevel gear set of the second steering part is connected to the transmission shaft, the first steering part and the second steering part are connected by a second telescopic rod, and the length of the second telescopic rod is adjustable. The second steering part is fixedly installed in the cavity of the fixed part, so that when the drive shaft moves, it can drive the first steering part to move and change the length of the second telescopic rod. The second steering part remains fixed, so that the position of the transmission shaft remains unchanged.
[0014] Preferably, the inner cavity of the mounting unit is fixedly mounted with a first connecting part, and the fixing unit further includes a second connecting part, wherein the ends of the first connecting part and the second connecting part are movably sleeved together.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a rotating unit drives an inspection unit to rotate and move along the outer edge of the cable to perform fault detection. The inspection unit is equipped with a sensor, which completes full-circumference coverage data collection with the rotation, achieving the effect of full-circumference detection of the cable without blind spots, and solving the problems of missed detection in hidden areas of the cable and low overall cable fault identification rate. 3. Based on the above structure, the speed control unit adjusts the rotation speed of the rotating unit according to the specifications of different cable sizes, so that the rotation speed and the moving speed of the inspection unit are adapted to the circumferential inspection requirements of cables of different thicknesses. This ensures that the sensor can achieve uniform full-circumference acquisition on the surface of various cables without detection overlap or missed detection, achieving a high-precision full-circumference inspection effect for cables of different sizes. This solves the problem that the fixed rotation speed of the rotating unit cannot be adapted to cables of different specifications and is prone to detection accuracy deviation. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the fixing part in this invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure of area A in the middle; Figure 5 This is a schematic diagram of the overall structure of the steering structure in this invention; Figure 6 This is a partial structural schematic diagram of the rotating unit in this invention; Figure 7 This is an exploded view of the overall structure of the transmission assembly in this invention, showing the transmission shaft; Figure 8 This is a schematic diagram of the overall structure of the positioning block in this invention; Figure 9 This is a motion trajectory diagram of the transmission component in this invention.
[0017] In the diagram: 100, Installation unit; 110, First connecting part; 200, Fixing unit; 210, Fixing part; 220, Second connecting part; 300, Rotating unit; 310, Drive gear; 320, Rotating part; 321, Connecting shaft; 330, Transmission assembly; 331, First gear; 332, Second gear; 340, Transmission shaft; 341, Groove; 400, Speed control unit; 410, Positioning block; 411, First inclined block; 412, Second inclined block; 413, Movable shaft; 420, Traveling unit; 421, Drive shaft; 430, First telescopic rod; 431, Connecting rod; 440, Steering structure; 441, First steering part; 442, Second steering part; 443, Second telescopic rod. Detailed Implementation
[0018] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0020] like Figures 1-3The present embodiment discloses a high-voltage cable fault location device, including an installation unit 100, a fixing unit 200, a rotating unit 300, and a speed control unit 400. The installation unit 100 is installed on the cable fault location device, the fixing unit 200 and the rotating unit 300 are both disposed at the end of the installation unit 100, and the speed control unit 400 is installed inside the fixing unit 200.
[0021] like Figure 2 As shown, the installation unit 100 has a first channel extending through it, in which a first connecting part 110 is installed. A detection unit is provided on the inner wall of the first connecting part 110 for detecting cable faults. The detection unit includes one or more sensors, such as a partial discharge sensor, an acoustic-magnetic synchronous detection sensor, or an infrared thermal imaging sensor. A fixing unit 200 is installed at the end of the installation unit 100. The fixing unit 200 has a second channel, and the first channel and the second channel are interconnected to form a main channel, allowing the installation unit 100 and the fixing unit 200 to be installed on the outside of the cable. The cable passes through the main channel. The fixing unit 200 includes a fixing part 210 and a second connecting part 220. The fixing part 210 is installed in the second channel, and the second connecting part 220 is movably sleeved with the first connecting part 110, allowing the installation unit 100 and its first connecting part 110 to rotate around the cable axis, while the fixing unit 200 as a whole remains in a fixed position.
[0022] like Figure 3 As shown, the second connecting part 220 has a cavity inside, and a speed control unit 400 is disposed in the cavity. The speed control unit 400 includes a traveling unit 420, which includes a drive shaft 421 and rollers. By moving the traveling unit 420 in a first direction, which is the direction in which the cable is located, the speed control unit 400 can achieve the desired speed. Figure 3 In the direction indicated by the middle arrow, the walking unit 420 moves in the first direction, causing one side of the roller to pass through the second connecting part 220 and abut against the outside of the cable. The drive shaft 421 is connected to a drive source, such as a motor, which drives the drive shaft 421 to rotate, causing the roller to roll along the outside of the cable. This, in turn, drives the fixing unit 200 and the mounting unit 100 to move synchronously along the cable axis. The mounting unit 100 is equipped with a rotating unit 300 at its end, which drives the mounting unit 100 to rotate, causing the mounting unit 100 to move along the outside of the cable and rotate. This allows the detection unit in the first connecting part 110 to perform all-round detection on the outside of the cable.
[0023] To enable the walking unit 420 to move in the first direction, as shown in Figure 2, the speed control unit 400 also includes a positioning block 410. The number of positioning blocks 410 is set to two. The two ends of the drive shaft 421 pass through the positioning blocks 410 respectively. The positioning blocks 410 are driven to move in the first direction. The way the positioning blocks 410 are driven to move includes, but is not limited to, being driven by a motor or by a screw. When the positioning blocks 410 move in the first direction, the walking unit 420 moves in the first direction. The contact surface between the positioning block 410 and the cable is set to an arc surface that is adapted to the outer side of the cable, so that the positioning block 410 fits against the outer side of the cable, and the position of the roller remains unchanged when the fixed unit 200 moves.
[0024] In order to move and rotate the mounting unit 100, such as Figure 4 As shown, the cavity opened in the fixing part 210 is also provided with a steering structure 440 and a first telescopic rod 430. While the drive shaft 421 drives the roller to rotate, the steering structure 440 changes the direction of the rotational motion, so that the rotational force is transmitted to the rotating unit 300. The rotating unit 300 drives the mounting unit 100 to rotate through the power of the drive shaft 421, so that the mounting unit 100 rotates while moving.
[0025] In more specific plans, such as Figure 5 As shown, the steering structure 440 includes a first steering section 441 and a second steering section 442. Both the first steering section 441 and the second steering section 442 are bevel gear sets composed of two meshing bevel gears. One end of the drive shaft 421 is connected to one bevel gear in the first steering section 441, and drives the bevel gear in the second steering section 442 to rotate through the other bevel gear. Through the meshing of the bevel gear in the second steering section 442, the rotational force generated by the drive shaft 421 is transmitted to the transmission shaft 340, causing the transmission shaft 340 to rotate. The rotation of the transmission shaft 340 drives the rotating unit 300 to drive the mounting unit 100 to rotate. Figure 6 This is a schematic diagram of the rotating unit 300, as shown below. Figure 6 As shown, the rotating unit 300 includes a drive gear 310, a rotating part 320, and a transmission assembly 330. The drive gear 310 is fixedly installed at the end of the mounting unit 100. The rotating part 320 can drive the drive gear 310 to rotate, and the transmission assembly 330 can drive the rotating part 320 to rotate. The rotational force is transmitted to the transmission assembly 330 through the transmission shaft 340. The transmission assembly 330 drives the rotating part 320 to rotate, causing the drive gear 310 to rotate. The drive gear 310 drives the mounting unit 100 to rotate, causing the mounting unit 100 to rotate during movement.
[0026] During use, it was also found that when inspecting cables of different sizes, due to the different cable diameters, by moving the positioning block 410 in the first direction, the traveling unit 420 can move in the first direction, allowing the device to move along cables with smaller diameters. By moving the positioning block 410 in the second direction, which is the direction away from the cable and is the opposite of the first direction, the device can move along cables with larger diameters. However, when inspecting cables with larger diameters, since the rotation speed of the mounting unit 100 remains fixed, as the mounting unit 100 moves along the outside of the cable, the detection unit set in the first connection part 110 has insufficient inspection time on the outside of the cable. The inspection time per unit length of the cable circumference is greatly compressed, the detection unit does not collect enough fault signals from various parts of the cable circumference, and the capture rate of weak feature signals drops sharply. When inspecting cables with smaller diameters, the acquisition time of the detection unit in the same circumferential part far exceeds the minimum effective requirement, generating a large number of redundant signals. Effective fault signals are drowned out by noise, which easily leads to misjudgment.
[0027] Therefore, in order to solve the above problems, in the improved solution, such as Figure 6 As shown, the rotating part 320 is composed of multiple gears of different diameters connected together and connected by a connecting shaft 321. The gear with the largest diameter meshes with the driving gear 310. The rotational speed transmitted by the transmission shaft 340 is the same as that of the drive shaft 421. When the moving speed of the device remains constant, the rotational speed transmitted by the transmission assembly 330 remains constant. The rotational speed of the rotating part 320 changes as the transmission assembly 330 drives the gears of different diameters in the rotating part 320 to rotate. When the transmission assembly 330 directly drives the gear with the largest diameter in the rotating part 320 to rotate, the rotational speed of the driving gear 310 is the slowest, and the rotational speed of the mounting unit 100 is the slowest. When the transmission assembly 330 drives the gear with the smallest diameter in the rotating part 320 to rotate, the rotational speed of the driving gear 310 is the fastest, and the rotational speed of the mounting unit 100 reaches its fastest.
[0028] In a more preferred embodiment, such as Figure 7 As shown, specifically, the transmission assembly 330 includes a first gear 331 and a second gear 332. The first gear 331 and the second gear 332 mesh with each other. The first gear 331 is located on the outside of the transmission shaft 340 and can be driven to rotate by the transmission shaft 340. The second gear 332 can mesh with multiple gears in the rotating part 320. A groove 341 is provided on the outside of the transmission shaft 340. A protrusion is provided at the connection between the transmission assembly 330 and the groove 341. The protrusion is located in the inner cavity of the groove 341, which is curved. The transmission assembly 330 is pushed by the movable shaft 413, and the protrusion moves along the groove 341, causing the transmission assembly 330 to swing around the transmission shaft 340. This allows the second gear 332 to switch between meshing with gears of different diameters in the rotating part 320, thereby achieving adaptive adjustment of the rotation speed of the installation unit 100. Figure 9As shown, the transmission assembly 330 oscillates, meshing with gears of different diameters in the rotating part 320.
[0029] In more specific plans, such as Figure 9 As shown, a first inclined block 411 is installed on one side of the positioning block 410, and a second inclined block 412 is provided in the cavity of the fixing part 210. The second inclined block 412 is allowed to move only towards the transmission assembly 330 and cannot move towards the cable in the first direction or away from the cable in the second direction. A movable shaft 413 is connected to one side of the second inclined block 412 and is connected to one side of the transmission assembly 330. The corresponding surfaces of the first inclined block 411 and the second inclined block 412 are set as compatible inclined surfaces. By moving the positioning block 410 towards the first direction, the first inclined surface... When block 411 moves toward the first direction, the second inclined block 412 moves toward the direction of the rotating unit 300, causing the movable shaft 413 to push the transmission assembly 330 to move along the outside of the transmission shaft 340. When the positioning block 410 moves toward the first direction, the walking unit 420 moves toward the first direction (the direction of the cable), causing the roller to come into contact with the smaller diameter cable. When the mounting unit 100 moves along the smaller diameter cable, the transmission assembly 330 swings, and the second gear 332 meshes with the larger diameter gear in the rotating part 320, causing the rotation speed of the mounting unit 100 to slow down. Continue as Figure 8 As shown, a spring is provided on one side of the second inclined block 412. After the second inclined block 412 moves toward the direction of the transmission component 330, the spring is compressed and moves toward the second direction via the positioning block 410. When the walking unit 420 is adapted to a cable with a larger diameter, the spring rebounds, causing the second inclined block 412 to move toward the direction of the positioning block 410, causing the transmission component 330 to rotate. This causes the second gear 332 to mesh with the smaller gear in the rotating part 320, increasing the rotation speed of the installation unit 100. This allows the installation unit 100 to adjust its own rotation speed according to cables of different diameters, enabling the detection unit provided in the first connecting part 110 to perform high-precision full-circumference inspection of cables of different sizes.
[0030] like Figure 4 As shown, the first telescopic rod 430 is connected to the steering structure 440. The first telescopic rod 430 consists of a main rod and auxiliary rods sleeved at both ends. One auxiliary rod is fixedly connected to the positioning block 410 via a connecting rod 431. When the positioning block 410 moves, the length of the first telescopic rod 430 changes, as shown... Figure 5As shown, a second telescopic rod 443 is provided between the first steering part 441 and the second steering part 442. The second telescopic rod 443 also includes a telescopic main rod and auxiliary rods sleeved at both ends. The length of the first telescopic rod 443 can change, and the first telescopic rod 443 can transmit torque. When the positioning block 410 moves in the first direction, the length of the first telescopic rod 430 is stretched, causing the first steering part 441 and the drive shaft 421 to move synchronously in the first direction, while the length of the second telescopic rod 443 shortens, and the second steering part 442 is fixed. In the chamber of the fixed part 210, the position of the second steering part 442 remains unchanged. When the positioning block 410 moves toward the second direction, the length of the first telescopic rod 430 is shortened, the first steering part 441 moves toward the second direction, the length of the second telescopic rod 443 is stretched, and the position of the second steering part 442 remains fixed, so that when the walking unit 420 moves toward the first direction or the second direction, the transmission component 330 will not produce a corresponding movement, so that the speed control unit 400 transmits the rotational power of the drive shaft 421 to the first gear 331.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The present invention is not limited to the above embodiments; the embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. A high-voltage cable fault location device, characterized in that, include: The mounting unit (100) has a first channel that extends through the central axis of the mounting unit (100) so that the mounting unit (100) can be sleeved on the outside of the cable. A fixing unit (200) is installed at the end of the mounting unit (100) and has a second channel, wherein the first channel and the second channel are connected to form a main channel; A rotating unit (300) is installed at the end of the mounting unit (100). The mounting unit (100) can be driven by the rotating unit (300) to rotate around its own central axis, so that the first channel rotates. The rotation speed of the mounting unit (100) is adjustable. The speed control unit (400) includes a walking unit (420), which can drive the main channel to move axially along the outer side of the cable, and the walking unit (420) itself can move in a first direction or a second direction. The rotation speed of the installation unit (100) can be adjusted synchronously by moving the walking unit (420).
2. The high-voltage cable fault location device according to claim 1, characterized in that: The rotating unit (300) includes a drive gear (310), a rotating part (320), and a transmission assembly (330). The rotating part (320) is composed of multiple gears of different diameters connected together and connected by a connecting shaft (321). The gear with the largest diameter meshes with the drive gear (310). The drive gear (310) is fixedly installed at the end of the mounting unit (100). By driving the rotating part (320) to rotate, the drive gear (310) can drive the mounting unit (100) to rotate. The transmission assembly (330) is located on one side of the rotating part (320) and includes a second gear (332). The second gear (332) meshes with multiple gears in the rotating part (320).
3. The high-voltage cable fault location device according to claim 1, characterized in that: The fixing unit (200) includes a fixing part (210), which is installed on the outside of the second channel. The fixing part (210) has a cavity. The speed control unit (400) also includes a positioning block (410) and a steering structure (440). The positioning block (410) is disposed in the cavity and allows the positioning block (410) to move in the cavity in a first direction or a second direction. The walking unit (420) includes a roller and a drive shaft (421). The roller can be rotated by rotating the drive shaft (421). One end of the drive shaft (421) is connected to a transmission shaft (340) through the steering structure (440). The transmission shaft (340) can be driven to rotate by the drive shaft (421).
4. The high-voltage cable fault location device according to claim 3, characterized in that: The steering structure (440) includes a first steering part (441) and a second steering part (442). Both the first steering part (441) and the second steering part (442) are provided with meshing bevel gear sets. The bevel gear sets convert the rotational motion of the drive shaft (421) in space, so that the rotational power of the drive shaft (421) is transmitted to the end of the transmission shaft (340), thereby enabling the drive shaft (421) to drive the transmission shaft (340) to rotate synchronously.
5. The high-voltage cable fault location device according to claim 2, characterized in that: The second gear (332) meshes with the first gear (331). The first gear (331) can be driven to rotate by the transmission shaft (340), and the second gear (332) rotates synchronously. Then, the transmission shaft (340) is driven to rotate by the drive shaft (421), so that the rotating part (320) drives the drive gear (310) to rotate.
6. The high-voltage cable fault location device according to claim 3, characterized in that: The number of positioning blocks (410) is set to two. Both ends of the drive shaft (421) pass through the positioning blocks (410), so that when the positioning blocks (410) move in the cavity of the fixed part (210), they drive the second connecting part (220) to move synchronously. The steering structure (440) is connected to the first telescopic rod (430). The steering structure (440) can change its own length according to the movement of the positioning blocks (410), so that the steering structure (440) can move synchronously with the drive shaft (421).
7. The high-voltage cable fault location device according to claim 3, characterized in that: A first inclined block (411) is installed on one side of the positioning block (410), and a second inclined block (412) is provided in the cavity of the fixing part (210). A movable shaft (413) is connected to one side of the second inclined block (412). The movable shaft (413) is connected to one side of the transmission assembly (330). The corresponding surfaces of the first inclined block (411) and the second inclined block (412) are set as matching inclined surfaces. The positioning block (410) moves toward the first direction, so that the first inclined block (411) moves toward the first direction, so that the second inclined block (412) moves toward the direction of the rotating unit (300), so that the movable shaft (413) pushes the transmission assembly (330) to move along the outside of the transmission shaft (340).
8. The high-voltage cable fault location device according to claim 7, characterized in that: The drive shaft (340) has a groove (341) on its outer side. A protrusion is provided at the connection between the drive assembly (330) and the groove (341). The protrusion is located in the inner cavity of the groove (341). By moving the drive assembly (330), the protrusion can move along the groove (341), so that the drive assembly (330) rotates around the drive shaft (340).
9. The high-voltage cable fault location device according to claim 4, characterized in that: The bevel gear set of the drive shaft (421) is connected to the first steering part (441), and the bevel gear set of the second steering part (442) is connected to the transmission shaft (340). The first steering part (441) and the second steering part (442) are connected by the second telescopic rod (443), and the length of the second telescopic rod (443) is adjustable. The second steering part (442) is fixedly installed in the cavity of the fixing part (210), so that when the drive shaft (421) moves, it can drive the first steering part (441) to move and cause the length of the second telescopic rod (443) to change. The second steering part (442) remains fixed, so that the position of the transmission shaft (340) remains unchanged.
10. The high-voltage cable fault location device according to claim 1, characterized in that: The inner cavity of the mounting unit (100) is fixedly installed with a first connecting part (110), and the fixing unit (200) further includes a second connecting part (220), the ends of the first connecting part (110) and the second connecting part (220) being movably connected.