Current detection equipment for power transmission line maintenance

Abstract

The invention relates to the technical field of power distribution facilities, and provides a current detection device for power transmission line maintenance, which comprises a current detection module and an obstacle crossing module, and is characterized in that the current detection module comprises a shell, a moving module, a limiting module, a clamping jaw type detection piece and a clamping jaw type cleaning piece, and a moving frame in the moving module is connected with a telescopic piece; the driving wheels are arranged in the moving frame, a pressing plate, a first pressing block and a second pressing block are arranged on the surface of the moving frame, one end of a first swing arm and one end of a second swing arm in the obstacle crossing module are connected through a first driving module, the other end of the first swing arm and the other end of the second swing arm are both connected with second driving modules, and the two second driving modules are fixedly arranged on the surfaces of the two rotating platforms correspondingly. The two rotating platforms are both connected with the shell, poor contact and misjudgment caused by dirt are fundamentally avoided, the detection accuracy and reliability are greatly improved, the device can be fixed again after automatically crossing obstacles, and the automation level and the maintenance efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution facility technology, specifically to a current detection device for power transmission line maintenance. Background Technology

[0002] Due to aging or corrosion of power transmission lines, leakage problems may occur. Leakage is caused by current leakage due to insulation damage or other reasons. When the casing of an appliance and the live wire of the mains are connected for some reason, there will be a potential difference between them and the ground, which will cause leakage. Leakage can seriously endanger people's lives and health.

[0003] A search revealed that CN114184857B discloses a leakage current detection device and method for all types of low-voltage distribution network lines, including a detector and a mobile detection mechanism. The detector is connected to the mobile detection mechanism via a wire. The mobile detection mechanism is installed on the line under test and can move along the line. By using the mobile mechanism to move along the line under test, leakage current detection can be effectively performed in areas that are difficult for personnel to reach. The magnetic end face can adaptively adjust the opening size of the U-shaped structure according to the size changes of the line under test, thereby adapting to different sections of the line under test. The telescopic component on the mobile mechanism can effectively adjust the shrinkage size to ensure the stable operation of the mobile mechanism. It can also effectively overcome obstacles by adjusting the telescopic length of the telescopic component when encountering protruding obstacles on the line.

[0004] The existing current detection equipment for transmission line maintenance still has the following defects: (1) Each functional module needs to be equipped with an independent power source (such as a motor or cylinder) and control system, which not only leads to complex equipment structure, high cost and complicated control program, but also occupies a large space and the reliability decreases due to the increase in components; (2) Stains, dust or entangled plant vines (such as kite strings or tree branches) often accumulate on the surface of transmission lines. These impurities will cause the leakage current detection signal to be distorted. Traditional current detection equipment does not have the function of cleaning before detection, and it is easy to make false detection or missed detection due to dirt; (3) Obstacles such as hardware and insulator strings on transmission lines cannot be removed. Traditional current detection equipment often has to bypass or stop working, requiring manual assistance to overcome obstacles, which increases safety risks and reduces work efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a current detection device for power transmission line maintenance, which aims to solve the problems existing in the current detection devices for power transmission line maintenance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a current detection device for power transmission line maintenance, comprising: A current detection module includes a housing, a moving module, a limiting module, a gripper-type detection component, and a gripper-type cleaning component. The moving module and the limiting module are both disposed inside the housing, with the limiting module located below the moving module. The gripper-type detection component and the gripper-type cleaning component are symmetrically distributed on both sides of the housing. The moving module includes a telescopic component, a moving frame, a drive wheel, a pressure plate, a first pressure block, and a second pressure block. The fixed end of the telescopic component is fixedly connected to the housing, and the moving frame is fixedly connected to the movable end of the telescopic component. The drive wheel is disposed inside the moving frame, and the surface of the moving frame is provided with a pressure plate, a first pressure block, and a second pressure block. When the telescopic component moves toward the line surface via the control of the drive wheel through the movable frame, the pressure plate can control the limiting module to clamp the line from the side away from the drive wheel. The first pressure block can control the claw-type detection component to fit with the line surface, and the second pressure block can control the claw-type cleaning component to fit with the line surface. The obstacle-crossing module includes a first swing arm, a second swing arm, a first drive module, a second drive module, and a rotating platform. One end of the first swing arm and the second swing arm are connected through the first drive module, and the other end of the first swing arm and the second swing arm are both connected to the second drive module. The two sets of second drive modules are respectively fixedly installed on the surfaces of the two sets of rotating platforms, and both sets of rotating platforms are connected to the housing.

[0007] The beneficial effects of the present invention are as follows: (1) The current detection module in this application can control the pressure between the drive wheel and the transmission line, control the limit module to limit the transmission line, and control the contact between the claw-type detection component and the claw-type cleaning component and the transmission line through the single telescopic movement of the telescopic component. The above movements have precise timing characteristics, which not only ensures the sequence of actions, but also ensures that the transmission line contacts a clean surface that has been cleaned every time a leakage current is detected. This fundamentally avoids poor contact and misjudgment caused by dirt, and greatly improves the accuracy and reliability of the detection.

[0008] (2) This application achieves the separation of two current detection modules through the multi-degree-of-freedom motion of the obstacle crossing module. One module is temporarily disconnected from the line and is re-fixed after crossing the obstacle by adjusting the tilt angle of the swing arm and rotating the rotating platform. This allows the equipment to operate continuously without stopping the machine, which significantly improves the level of automation and maintenance efficiency. Attached Figure Description

[0009] Figure 1 This is a perspective view of the current detection module of the present invention.

[0010] Figure 2 This is a perspective view of the mobile module of the present invention.

[0011] Figure 3 For the present invention Figure 1 A magnified view of a portion of point a.

[0012] Figure 4 This is a planar cross-sectional view of the current detection module of the present invention.

[0013] Figure 5 This is a front view of the current detection module of the present invention.

[0014] Figure 6 This is a perspective view of the obstacle-crossing module of the present invention.

[0015] Figure 7 For the present invention Figure 6 A magnified view of a section at point b.

[0016] Figure 8 This is a front view of the present invention, which uses two sets of current detection modules to detect the current of the same transmission line.

[0017] Figure 9 This is a planar cross-sectional view of the two sets of current detection modules that are attached to each other according to the present invention.

[0018] Figure 10 This is a front view of the obstacle-crossing action of the present invention.

[0019] Figure 11 This is a perspective view of the present invention using two sets of current detection modules to detect the current of two sets of parallel transmission lines.

[0020] Reference numerals: 100-Current detection module, 110-Housing, 111-Fixing pin, 112-Limiting block, 113-Groove, 114-Magnetic sticker, 120-Moving module, 121-Telescopic component, 122-Moving frame, 123-Drive wheel, 124-Pressure plate, 125-Pressure strip, 126-First pressure block, 1261-Modible pin, 1262-Spring one, 127-Second pressure block, 130-Limiting module, 131-Conical wheel, 132-Wedge slide, 133-Spring two, 140-Grip type detection component, 141-Inner support spring, 150-Grip type cleaning component, 151-Cleansing layer, 152-Cutter; 200 - Obstacle crossing module, 210 - Swing arm one, 220 - Swing arm two, 230 - Drive module one, 231 - Rotating shaft, 232 - Drive component, 240 - Drive module two, 250 - Rotating platform; 300 - Obstacle Recognition Module. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 5 In one embodiment of the present invention, a current detection device for power transmission line maintenance includes: A current detection module 100 includes a housing 110, a moving module 120, a limiting module 130, a gripper-type detection component 140, and a gripper-type cleaning component 150. The moving module 120 and the limiting module 130 are both disposed inside the housing 110, with the limiting module 130 located below the moving module 120. The gripper-type detection component 140 and the gripper-type cleaning component 150 are symmetrically distributed on both sides of the housing 110. The moving module 120 includes a telescopic component 121, a moving frame 122, a drive wheel 123, a pressure plate 124, a first pressure block 126, and a second pressure block 127. The fixed end of the telescopic component 121 is fixedly connected to the housing 110, and the moving frame 122 is fixedly connected to the movable end of the telescopic component 121. The drive wheel 123 is disposed inside the moving frame 122, and the surface of the moving frame 122 is provided with the pressure plate 124, the first pressure block 126, and the second pressure block 127. When the telescopic member 121 moves towards the line surface via the control of the drive wheel 123 by the moving frame 122, the pressure plate 124 can control the limiting module 130 to clamp the line from the side away from the drive wheel 123. The first pressure block 126 can control the gripper-type detection component 140 to fit with the line surface, and the second pressure block 127 can control the gripper-type cleaning component 150 to fit with the line surface. The telescopic member 121 is an electric telescopic rod or a hydraulic telescopic rod. The power module is located inside the housing 110 and is not shown in the figure.

[0024] Please see Figures 4 to 5 Furthermore, the limiting module 130 includes a conical wheel 131, a wedge-shaped slide 132, and a second spring 133. The conical wheel 131 is rotatably connected to the wedge-shaped slide 132. The wedge-shaped slide 132 is slidably disposed within the housing 110. The housing 110 is fixedly provided with a limiting block 112. The second spring 133 is connected between the wedge-shaped slide 132 and the limiting block 112. The pressure plate 124 can slide in contact with the upper surface of the wedge-shaped slide 132.

[0025] Please see Figures 1 to 5Furthermore, two sets of fixing pins 111 are respectively provided on both sides of the housing 110. The claw-type detection component 140 and the claw-type cleaning component 150 are both composed of an inner support spring 141 and two sets of arc-shaped claws. The arc-shaped claws are rotatably connected to the fixing pins 111. The inner support spring 141 is connected between the two sets of arc-shaped claws. The end of the arc-shaped claw is provided with a wedge-shaped surface. The first pressure block 126 and the second pressure block 127 can slide in contact with the wedge-shaped surface. A conductive layer is provided on the inner side of the arc-shaped claw of the claw-type detection component 140. The conductive layer is electrically connected to the leakage current detector. A cleaning layer 151 and a cutter 152 are respectively provided on the inner and outer sides of the arc-shaped claw of the claw-type cleaning component 150. The cleaning layer 151 is a flexible needle cluster or felt, which can automatically remove stains, cut vines, kite strings, and balloon strings before detection, ensuring that the conductive layer is tightly attached to the circuit and improving the leakage current detection accuracy.

[0026] In this embodiment of the invention, a conductive layer is disposed on the inner side of the arc-shaped gripper of the gripper-type detection element 140, consisting of positive and negative contacts, and electrically connected to the leakage current detector via wires. The positive and negative contacts are made of highly conductive materials (such as copper alloy or silver coating) to ensure good contact with the surface of the transmission line, while also possessing wear-resistant and corrosion-resistant properties. The leakage current detector can detect microampere-level current or millivolt-level voltage changes. Under normal operating conditions (no leakage), the transmission line, as a good conductor, has a uniform surface potential distribution, and the positive and negative contacts are in an approximately equipotential state. Therefore, the differential signal measured by the leakage current detector ( When a power transmission line has a leakage fault (such as insulation aging, surface cracks, corona discharge or partial discharge caused by dirt), the fault point will generate abnormal current leakage or electromagnetic field disturbance. These abnormalities will cause changes in the potential gradient on the line surface, thereby generating a small voltage difference or current flow between the positive and negative contacts. For AC transmission lines, leakage faults usually manifest as high-frequency components (such as pulse current generated by partial discharge). The leakage detector will focus on a specific frequency band to extract the signal. The leakage detector identifies leakage faults by measuring the differential signal between the positive and negative contacts.

[0027] For transmission lines that do not contain obstructions such as fittings and insulator strings, leakage current detection can be performed using only a single current detection module 100. The detection methods include: S100, the housing 110 is fitted onto the surface of the transmission line. The telescopic component 121 controls the drive wheel 123 to move toward the transmission line through the moving frame 122. The pressure plate 124 on the moving frame 122 overcomes the elastic force of the spring 133 by sliding contact with the wedge-shaped slide table 132, driving the two sets of symmetrical conical wheels 131 to move toward the transmission line. The transmission line can be clamped between the two sets of conical wheels 131 from below. At this time, the pressure plate 124 just disengages from the wedge-shaped slide table 132. S200, the telescopic component 121 continues to control the drive wheel 123 to contact the transmission line according to the first preset pressure (the pressure between the drive wheel 123 and the transmission line when the drive wheel 123 rotates to control the current detection module 100 to move). During this process, the synchronously moving first pressure block 126 and second pressure block 127 overcome the elastic force of the inner support spring 141 by sliding contact with the wedge-shaped surface at the end of the arc-shaped gripper. This drives the conductive layer of the gripper-type detection component 140, the cleaning layer 151 of the gripper-type cleaning component 150, and the cutter 152 to contact the transmission line according to the preset pressure. At this time, the first pressure block 126 and the second pressure block 127 are both disengaged from the wedge-shaped surface at the end of the arc-shaped gripper. During the movement, the conductive layer always maintains preset pressure contact with the line surface to ensure the continuity of signal acquisition. When the drive wheel 123 stops, the telescopic component 121 continues to control the drive wheel 123 to contact the transmission line according to the second preset pressure. The purpose is to increase friction, especially when the line slope changes, to ensure the stable movement and detection consistency of the equipment under various line conditions. S300: The current detection module 100 is controlled by the drive wheel 123 to move toward the gripper-type cleaning component 150 on the surface of the transmission line. The cleaning layer 151 can clean the stains on the surface of the transmission line, and the cutter 152 can cut the plant vines and kite lines wrapped around the surface of the transmission line, which can ensure that the subsequent conductive layer can accurately detect whether there is a leakage fault on the surface of the transmission line.

[0028] Please see Figures 6 to 11In another embodiment of the present invention, an obstacle-crossing module 200 includes a first swing arm 210, a second swing arm 220, a first drive module 230, a second drive module 240, and a rotating platform 250. One end of the first swing arm 210 and the second swing arm 220 is connected via the first drive module 230, and the other end of each of the first swing arm 210 and the second swing arm 220 is connected to the second drive module 240. The two sets of second drive modules 240 are respectively fixedly disposed on the surfaces of the two sets of rotating platforms 250. Both sets of rotating platforms 250 are connected to the housing 110. The first drive module 230 and the second drive module 240 each include a rotating shaft 231 and a drive component 232. The drive component 232 is connected to the rotating shaft 231 via a gear set. One end of the first swing arm 210 is rotatably connected to the rotating shaft 231 of the first drive module 230, and the other end of the first swing arm 210 is fixedly connected to the rotating shaft 231 of the second drive module 240. Both ends of the second swing arm 220 are fixedly connected to the rotating shafts 231 of the first drive module 230 and the second drive module 240, respectively. The driving component 232 of the first drive module 230 is fixedly connected to the first swing arm 210, and the driving component 232 of the second drive module 240 is fixedly connected to the rotating platform 250. A groove 113 is provided at the end of the housing 110, and the rotating platform 250 is rotatably disposed in the groove 113. The rotating platform 250 is connected to the drive motor, and both ends of the first swing arm 210 and the second swing arm 220 can rotate around the rotating shaft 231, respectively. An obstacle recognition module 300 is fixedly mounted on the surface of the housing 110. The obstacle recognition module 300 includes a lidar and a visible camera, which can detect obstacles in front in real time and trigger an obstacle crossing procedure. Please see Figure 9 Furthermore, the surface of the movable frame 122 is also provided with a pressure strip 125. The pressure plate 124 and the pressure strip 125 are both fixedly connected to the surface of the movable frame 122. The second pressure block 127 is fixedly connected to the pressure strip 125. The pressure plate 124, the first pressure block 126 and the second pressure block 127 are all parallel to the movement direction of the telescopic member 121. The pressure strip 125 is perpendicular to the second pressure block 127. Magnets 114 are provided on both sides of the housing 110. The two sets of magnets 114 have different magnetic properties.

[0029] Please see Figures 3 to 9 Furthermore, a movable pin 1261 is fixedly connected to the surface of the first pressing block 126. The movable pin 1261 is slidably connected to the movable frame 122. A spring 1262 is connected between the movable frame 122 and the first pressing block 126. The magnetic attraction force of the two sets of magnets 114 is greater than the elastic force of the spring 1262.

[0030] In this embodiment of the invention, after assembling two sets of current detection modules 100 and obstacle crossing module 200, leakage current detection is performed. The detection method includes: S100, fixing the two sets of current detection modules 100 on the same transmission line surface according to the leakage current detection steps S100-S200 of a single set of current detection modules 100. S200, Reference Appendix Figure 8 and Figure 9 When the device moves on the surface of a power transmission line where there are no obstacles, it controls the two sets of housings 110 to move towards each other by controlling the two sets of drive wheels 123 or drive modules 1 230 and 240 to control the tilt angle of swing arms 1 210 and 220. The two sets of opposite magnetic stickers 114 on the sides of the two sets of housings 110 can magnetically adhere to each other. During this process, the pressure bar 125 in one set of current detection modules 100 overcomes the elastic force of spring 1262 to squeeze the first pressure block 126 in another set of current detection modules 100, which is used to drive the first pressure block 126 to separate from the claw-type detection element 140. At this time, the elastic force of the inner support spring 141 can drive the claw-type detection element 140 to detach from the power transmission line. The purpose is to keep only the claw-type detection element 140 in one set of current detection modules 100 in contact with the power transmission line when the drive wheel 123 controls the two sets of current detection modules 100 to move along the power transmission line. S300, Reference Appendix Figure 10 When the obstacle recognition module 300 (LiDAR, visible camera) recognizes the aforementioned obstacle in front, it controls the two sets of power transmission lines to detach by controlling the two sets of housings 110 to move in opposite directions. It controls one set of current detection modules 100 to detach from the power transmission line. Using the automatic rotation function of the two sets of rotating platforms 250, the automatic tilt angle adjustment function of swing arm one 210 and swing arm two 220, and the movement function of the other set of current detection modules 100, the current detection module 100, which is temporarily detached from the line, can cross the obstacle. After the current detection module 100 that has crossed the obstacle is automatically fixed to the power transmission line, the obstacle crossing work of the other set of current detection modules 100 is completed in the same way. S400, Reference Appendix Figure 11 Alternatively, the two sets of current detection modules 100 can be fixed on the surfaces of two parallel transmission lines in the same manner to achieve the function of simultaneous leakage current detection. Even if an obstacle appears on one of the transmission lines, the obstacle crossing module 200 can automatically cross the obstacle in conjunction with its rotation and angle adjustment functions.

[0031] In summary, the current detection module 100 in this application, through the single telescopic movement of the telescopic member 121, can not only control the pressure between the drive wheel 123 and the transmission line, but also control the limit module 130 to limit the transmission line, and control the contact between the gripper-type detection member 140 and the gripper-type cleaning member 150 and the transmission line. The above movements have precise timing characteristics, which not only ensures the sequence of actions, but also ensures that the transmission line contacts a clean surface each time a leakage current is detected, fundamentally avoiding poor contact and misjudgment caused by dirt, and greatly improving the accuracy and reliability of the detection.

[0032] This application supports the combined use of single or dual current detection modules 100. On unobstructed lines, the magnetic sticker 114 allows the two modules to be combined, with only one detection unit remaining in operation to reduce energy consumption. When crossing obstacles or detecting parallel lines, the modules can be separated and move independently, flexibly switching modes according to task requirements, thus improving applicability and economy.

[0033] This application achieves the separation of two sets of current detection modules 100 through the multi-degree-of-freedom motion of the obstacle-crossing module 200. One set of modules is temporarily disconnected from the line, and after crossing the obstacle, it is re-fixed by using the tilt angle adjustment of the swing arm and the rotation of the rotating platform 250. This allows the equipment to operate continuously without stopping, significantly improving the level of automation and maintenance efficiency.

[0034] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A current detection device for power transmission line maintenance, characterized in that, include: A current detection module (100) includes a housing (110), a moving module (120), a limiting module (130), a gripper-type detection component (140), and a gripper-type cleaning component (150). The moving module (120) and the limiting module (130) are both disposed inside the housing (110), with the limiting module (130) located below the moving module (120). The gripper-type detection component (140) and the gripper-type cleaning component (150) are symmetrically distributed on both sides of the housing (110). The block (120) includes a telescopic component (121), a movable frame (122), a drive wheel (123), a pressure plate (124), a first pressure block (126), and a second pressure block (127). The fixed end of the telescopic component (121) is fixedly connected to the housing (110), and the movable frame (122) is fixedly connected to the movable end of the telescopic component (121). The drive wheel (123) is disposed inside the movable frame (122), and the surface of the movable frame (122) is provided with a pressure plate (124), a first pressure block (126), and a second pressure block (127). When the telescopic member (121) moves towards the line surface by controlling the drive wheel (123) through the moving frame (122), the pressure plate (124) can control the limiting module (130) to clamp the line from the side away from the drive wheel (123), the first pressure block (126) can control the claw-type detection component (140) to fit with the line surface, and the second pressure block (127) can control the claw-type cleaning component (150) to fit with the line surface; An obstacle-crossing module (200) includes a first swing arm (210), a second swing arm (220), a first drive module (230), a second drive module (240), and a rotating platform (250). One end of the first swing arm (210) and the second swing arm (220) are connected through the first drive module (230), and the other end of the first swing arm (210) and the second swing arm (220) are connected to the second drive module (240). The two sets of second drive modules (240) are respectively fixedly disposed on the surfaces of the two sets of rotating platforms (250), and both sets of rotating platforms (250) are connected to the housing (110).

2. The current detection device for transmission line maintenance according to claim 1, characterized in that, The surface of the movable frame (122) is also provided with a pressure strip (125). The pressure plate (124) and the pressure strip (125) are both fixedly connected to the surface of the movable frame (122). The first pressure block (126) is elastically connected to the surface of the movable frame (122). The second pressure block (127) is fixedly connected to the pressure strip (125). The pressure plate (124), the first pressure block (126) and the second pressure block (127) are all parallel to the movement direction of the telescopic member (121). The pressure strip (125) is perpendicular to the second pressure block (127).

3. The current detection device for transmission line maintenance according to claim 2, characterized in that, The limiting module (130) includes a conical wheel (131), a wedge-shaped slide (132), and a second spring (133). The conical wheel (131) is rotatably connected to the wedge-shaped slide (132). The wedge-shaped slide (132) is slidably disposed in the housing (110). The housing (110) is fixedly provided with a limiting block (112). The second spring (133) is connected between the wedge-shaped slide (132) and the limiting block (112). The pressure plate (124) can slide in contact with the upper surface of the wedge-shaped slide (132).

4. The current detection device for transmission line maintenance according to claim 3, characterized in that, A movable pin (1261) is fixedly connected to the surface of the first pressure block (126). The movable pin (1261) is slidably connected to the movable frame (122). A spring (1262) is connected between the movable frame (122) and the first pressure block (126).

5. A current detection device for transmission line maintenance according to claim 4, characterized in that, Two sets of fixing pins (111) are respectively provided on both sides of the housing (110). The claw-type detection component (140) and the claw-type cleaning component (150) are both composed of an inner support spring (141) and two sets of arc-shaped claws. The arc-shaped claws are rotatably connected to the fixing pins (111). The inner support spring (141) is connected between the two sets of arc-shaped claws. The ends of the arc-shaped claws are provided with wedge-shaped surfaces. The first pressure block (126) and the second pressure block (127) can both slide in contact with the wedge-shaped surfaces.

6. A current detection device for transmission line maintenance according to claim 5, characterized in that, The inner side of the arc-shaped gripper of the gripper-type detection element (140) is provided with a conductive layer, which is electrically connected to the leakage current detector.

7. A current detection device for transmission line maintenance according to claim 5, characterized in that, The inner and outer sides of the arc-shaped grippers of the gripper (150) are respectively provided with a cleaning layer (151) and a cutter (152).

8. A current detection device for transmission line maintenance according to claim 1, characterized in that, Both drive module one (230) and drive module two (240) include a rotating shaft (231) and a drive component (232). The drive component (232) is connected to the rotating shaft (231) via a gear set. One end of the swing arm one (210) is rotatably connected to the rotating shaft (231) of drive module one (230), and the other end of the swing arm one (210) is fixedly connected to the rotating shaft (231) of drive module two (240). Both ends of the swing arm two (220) are fixedly connected to the rotating shafts (231) of drive module one (230) and drive module two (240) respectively. The drive component (232) of drive module one (230) is fixedly connected to the swing arm one (210), and the drive component (232) of drive module two (240) is fixedly connected to the rotating platform (250).

9. A current detection device for transmission line maintenance according to claim 8, characterized in that, The shell (110) has magnets (114) on both sides, and the two sets of magnets (114) have different magnetic properties.

10. A current detection device for transmission line maintenance according to claim 1, characterized in that, It also includes an obstacle recognition module (300), which is fixedly disposed on the surface of the housing (110).

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