A power transmission line interruption fault detection device

Abstract

This invention relates to the field of circuit testing equipment technology, and discloses a device for detecting current interruption faults in transmission lines. The device includes a transmission line body, a switching assembly on the outer side of the transmission line body, a transmission assembly on the upper side of the switching assembly, and driving assemblies on both sides of the outer side of the transmission line body near the switching assembly. The switching assembly includes an outer ring fitted around the outer side of the transmission line body, three sets of U-shaped plates fixedly mounted on the outer side of the outer ring, outer protective plates fixedly mounted on the outer sides of each of the three sets of U-shaped plates, switching strips rotatably mounted on the inner sides of each of the three sets of switching strips, and fixing sleeves fixedly mounted on both sides of each of the three sets of switching strips. This device for detecting current interruption faults in transmission lines, through its overall coordinated use, avoids secondary conductor breakage caused by crushing when crossing damaged sections of the transmission line body, ensuring continuous testing and line safety.

Description

Technical Field

[0001] This invention relates to the field of circuit testing equipment technology, and in particular to a device for detecting power transmission line interruption faults. Background Technology

[0002] Currently, fault detection of power transmission lines is crucial, as faults in these lines can cause widespread power outages, severely impacting industrial production, basic public services, and overall social safety. Failure to detect fault locations promptly can trigger secondary disasters, such as wildfires caused by falling broken conductors or electric arcs destroying towers or nearby equipment. Traditional manual inspections minimize the risks associated with downtime.

[0003] For example, a current-interruption fault detection device for transmission lines, disclosed in patent publication number CN117269847A, relates to the field of line testing. It includes a tester fixing plate and two connecting frames, with the tester fixing plate located between the two connecting frames. The tester fixing plate has a fixing slot inside. The current-interruption fault detection device for transmission lines described in this invention allows the device to move around the power line, thereby driving the tester body to move and test the entire section of the power line. This facilitates the movement and testing of the entire power line section, enabling the device to perform movement and testing without relying on the power line. It is more convenient for testing unstable power lines and in different situations, allowing the tester body to move outside a section of the power line, enabling more testing methods and facilitating testing in different locations. It eliminates the hassle of moving the tester at close range and makes the movement and testing of the tester body more convenient.

[0004] However, the above-mentioned device still has drawbacks. The common damage to the conductor surface, such as broken strands, indentations, and corrosion, poses a significant risk to the movement of the equipment: when the drive wheel travels to the damaged area, direct crushing will cause a double hazard. The mechanical pressure will tear the broken strands, causing the line to break. Summary of the Invention

[0005] The main objective of this invention is to provide a power transmission line interruption fault detection device that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A power transmission line interruption fault detection device includes a power transmission line body, a switching assembly disposed on the outer side of the power transmission line body, a transmission assembly disposed on the upper side of the switching assembly, and drive assemblies disposed on both sides of the outer side of the power transmission line body near the switching assembly. The switching assembly includes an outer ring fitted around the outer side of the power transmission line body, three sets of U-shaped plates fixedly disposed on the outer side of the outer ring, outer protective plates fixedly disposed on the outer sides of each of the three sets of U-shaped plates, and switching strips rotatably disposed on the inner sides of each of the three sets of U-shaped plates. Both sides of the strip are fixedly equipped with fixing sleeves, and the upper end of one side of each fixing sleeve is fixedly equipped with a bushing. Hydraulic cylinders are movably installed between the three sets of U-shaped plates and the bushings on the three sets of fixing sleeves on one side. An inner movable ring is rotatably provided on the inner side of the outer ring. Two sets of rack rings are fixedly provided on the inner side of the inner movable ring. An inlet is opened on the lower side of both the outer ring and the inner movable ring. Two sets of connecting shafts are fixedly provided on the front side of the inlet. Baffles are rotatably provided on the inner side of the two sets of connecting shafts. Two sets of camera devices are fixedly provided on the inner wall of the inner movable ring.

[0008] Preferably, the transmission assembly includes two sets of fixing plates fixedly disposed at the lower end of the three sets of switching bars. A cylinder is fixedly disposed at the lower end of the fixing plate. A round rod is rotatably disposed on the inner side of the cylinder. A first bevel gear is fixedly disposed on one side of the round rod, and a first spur gear is fixedly disposed on the other side of the round rod.

[0009] Preferably, the drive assembly includes two sets of wheel frames fixedly mounted on the lower ends of three sets of fixed sleeves on both sides. A shaft cylinder is rotatably mounted on the inner side of each wheel frame, and a drive wheel is fixedly mounted on the outer side of each shaft cylinder. Several friction strips are fixedly mounted on the outer side of each drive wheel. A mating hole is provided on the inner side of each shaft cylinder near both sides. Three sets of first drive rods are mounted on the inner side of each of the several sets of shaft cylinders mounted on the lower two sets of fixed sleeves. Three sets of second drive rods are rotatably mounted on the inner sides of the upper set of three sets of shaft cylinders. A sleeve is fitted over the outer sides of the three sets of first drive rods and the three sets of second drive rods. The inner side of the sleeve... Connection holes are provided at the positions corresponding to the first and second drive rods. Mounting plates are fixedly installed at the front and rear ends of the upper set of the three sets of fixed sleeves. A drive motor is fixedly installed at the front end of the front set of the two sets of mounting plates. A transmission shaft is fixedly installed on the rear side of the drive motor's rotating shaft. Two sets of first synchronous pulleys are fixedly installed on the outer side of the transmission shaft. Second synchronous pulleys are fixedly installed on both sides of the shaft cylinder provided on the upper side of the three sets of fixed sleeves. Two sets of synchronous belts are sleeved on the outer side of the two sets of first synchronous pulleys and the second synchronous pulleys on the same side. A second bevel gear is fixedly installed on the outer side of the transmission shaft near the two sets of first synchronous pulleys.

[0010] Preferably, the three sets of U-shaped plates and outer protective plates are arranged evenly in a ring, one side of the three sets of switching strips is set in an inclined state, and the hydraulic cylinder pushes the bushing and fixing sleeve on one side in an inclined state.

[0011] Preferably, the inlet allows the main body of the transmission line to pass through, the baffle blocks the inlet, and one side of the baffle is fixedly connected by bolts.

[0012] Preferably, one set of the two sets of round rods mounted on the inclined switching bar is in an inclined state and the first spur gear connected to it is offset from one side of the rack ring, while the other set of the two sets of first spur gears is meshed with the rack ring.

[0013] Preferably, the outer side of the drive wheel is configured with an arc-shaped groove, the three sets of first drive rods and the three sets of second drive rods are staggered, and each of the three sets of first drive rods and second drive rods has a limit ring fixedly installed on the opposite side and movably inserted into the connecting hole.

[0014] Preferably, the three sets of the first drive rods are movably disposed in the lower docking holes, the drive shaft passes through the two sets of mounting plates and is connected to the drive motor rotating shaft, and the second bevel gear is meshed with the first bevel gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By opening the baffle to unfold the inlet, the main body of the transmission line enters the inner movable ring through the inlet. Then, by pushing or pulling with three sets of hydraulic cylinders, the drive components on both sides can be unfolded or brought closer together. The drive components on both sides can be switched to clamp or unfold the main body of the transmission line. At this time, the drive motor on the clamping side drives the transmission shaft, two sets of first synchronous pulleys, and second bevel gears to rotate. The rotating first synchronous pulley drives the connected synchronous belt, which in turn drives the connected second synchronous pulley, the connected shaft cylinder, and the drive wheel to rotate. During the rotation, the friction strip increases the friction force. The rotating shaft cylinder drives three sets of second drive rods on each side to drive the sleeves on both sides to rotate. The two sets of rotating sleeves simultaneously drive three sets of first drive rods on each side. The three sets of first drive rods then drive the lower shaft cylinder and drive wheel to rotate, thereby automatically moving the entire drive component to the unfolded side. Through the connection of the sleeves, the distance between the two drive components can be changed when they are brought closer together or unfolded, and the rotation can be satisfied during the drive. The automatic movement of the equipment reduces the risk of manual inspection.

[0017] 2. The first bevel gear meshes with the rotating second bevel gear and rotates with the connected round rod and the first spur gear. The rotating first spur gear can drive the components in the switching assembly to realize power transmission.

[0018] 3. The rotating first spur gear drives the meshing rack ring and inner movable ring, causing the inner movable ring to drive the camera device to rotate in the outer ring. The movement of the drive component can drive the camera device to rotate. When the device moves on the main body of the transmission line, the rotating camera device automatically performs a comprehensive inspection of the surface of the main body of the transmission line, avoiding blind spots that affect the inspection effect, and making it easier to inspect between two adjacent sets of transmission line bodies.

[0019] 4. When facing a damaged section of the transmission line, three sets of hydraulic cylinders can pull or push the drive components installed on the fixed sleeves on both sides. The two sets of drive components can switch between unfolding and closing to cross the damaged section of the transmission line, avoiding secondary breakage of the conductor due to crushing, ensuring the continuity of inspection and line safety. When the hydraulic cylinders control both drive components to be in the unfolded state, the baffle can be opened to remove the whole from the outside of the transmission line body, facilitating the overall installation and disassembly work. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a power transmission line interruption fault detection device according to the present invention.

[0021] Figure 2 This is a schematic diagram of the inner partial structure of a power transmission line interruption fault detection device according to the present invention;

[0022] Figure 3 This is a partial structural diagram of the switching component and transmission component of a power transmission line interruption fault detection device according to the present invention.

[0023] Figure 4 This invention relates to a power transmission line interruption fault detection device. Figure 3 Enlarged structural diagram of section A in the middle;

[0024] Figure 5 This invention relates to a power transmission line interruption fault detection device. Figure 3 Enlarged structural diagram of section B in the middle;

[0025] Figure 6 This is a schematic diagram of the drive component structure of a power transmission line interruption fault detection device according to the present invention.

[0026] Figure 7 This is a partial cross-sectional view of the drive assembly of a power transmission line interruption fault detection device according to the present invention.

[0027] Figure 8 This is a partial structural diagram of the drive component of a power transmission line interruption fault detection device according to the present invention.

[0028] In the diagram: 1. Main body of the transmission line; 2. Switching assembly; 21. Outer ring; 22. U-shaped plate; 23. Outer protective plate; 24. Switching bar; 25. Fixing sleeve; 26. Shaft sleeve; 27. Hydraulic cylinder; 28. Inner movable ring; 29. ​​Rack ring; 210. Inlet; 211. Connecting shaft; 212. Baffle; 213. Camera equipment; 3. Transmission assembly; 31. Fixing plate; 32. Cylinder; 33. Round rod; 34. First cone 35. Gear; 4. First spur gear; 5. Drive assembly; 6. Wheel frame; 7. Shaft sleeve; 8. Drive wheel; 9. Friction strip; 10. Connecting hole; 11. First drive rod; 12. Second drive rod; 13. Sleeve; 14. Connecting hole; 15. Mounting plate; 16. Drive motor; 27. Drive shaft; 38. First synchronous pulley; 49. Second synchronous pulley; 50. Synchronous belt; 61. Second bevel gear. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship as a relative relationship of orientation or position, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] Please see Figures 1-8This invention provides an embodiment of a power transmission line interruption fault detection device, comprising a power transmission line body 1, a switching component 2 disposed on the outer side of the power transmission line body 1, a transmission component 3 disposed on the upper side of the switching component 2, and drive components 4 disposed on both sides of the outer side of the power transmission line body 1 near the switching component 2. The switching component 2 includes an outer ring 21 fitted around the outer side of the power transmission line body 1, three sets of U-shaped plates 22 fixedly disposed on the outer side of the outer ring 21, an outer protective plate 23 fixedly disposed on the outer side of each of the three sets of U-shaped plates 22, and a switching strip 24 rotatably disposed on the inner side of each of the three sets of U-shaped plates 22. Each ring is fixedly equipped with a fixed sleeve 25. A bushing 26 is fixedly installed on the upper end of one side of each fixed sleeve 25. A hydraulic cylinder 27 is movably installed between the three sets of U-shaped plates 22 and the bushing 26 on the three sets of fixed sleeves 25 on one side. An inner movable ring 28 is rotatably installed on the inner side of the outer ring 21. Two sets of rack rings 29 are fixedly installed on the inner side of the inner movable ring 28. An inlet 210 is opened on the lower side of both the outer ring 21 and the inner movable ring 28. Two sets of connecting shafts 211 are fixedly installed on the front side of the inlet 210. A baffle 212 is rotatably installed on the inner side of the two sets of connecting shafts 211. Two sets of camera devices 213 are fixedly installed on the inner wall of the inner movable ring 28.

[0032] Three sets of U-shaped plates 22 and outer protective plates 23 are evenly arranged in a ring. One side of the three sets of switching strips 24 is set in an inclined state. The hydraulic cylinder 27 pushes the bushing 26 and the fixing sleeve 25 on one side in an inclined state. The inlet 210 allows the main body of the power transmission line 1 to pass through. The baffle 212 is blocked in the inlet 210. One side of the baffle 212 is fixedly connected by bolts.

[0033] The rotating first spur gear 35 drives the meshing rack ring 29 and inner movable ring 28, causing the inner movable ring 28 to drive the camera device 213 to rotate within the outer ring 21. The movement of the drive assembly 4 drives the camera device 213 to rotate. When the device moves on the main body 1 of the power transmission line, the rotating camera device 213 automatically performs a comprehensive inspection of the surface of the main body 1 of the power transmission line, avoiding blind spots that affect the inspection effect, and making it easier to inspect between two adjacent sets of main bodies 1 of the power transmission line. When facing a damaged section of the main body 1 of the power transmission line, the three sets of hydraulic cylinders 27 can pull or push the drive assembly 4 installed on the two fixed sleeves 25 respectively. The two sets of drive assemblies 4 can switch between unfolding and closing, crossing the damaged section of the main body 1 of the power transmission line, avoiding secondary breakage of the conductor due to crushing, ensuring the continuity of inspection and line safety. When the hydraulic cylinders 27 control the drive assemblies 4 on both sides to be in the unfolded state, the baffle 212 can be opened, and the whole can be removed from the outside of the main body 1 of the power transmission line, facilitating the overall installation and disassembly.

[0034] The transmission assembly 3 includes two sets of fixing plates 31 fixedly installed at the lower end of the three sets of switching bars 24. A cylinder 32 is fixedly installed at the lower end of the fixing plate 31. A round rod 33 is rotatably installed on the inner side of the cylinder 32. A first bevel gear 34 is fixedly installed on one side of the round rod 33, and a first spur gear 35 is fixedly installed on the other side of the round rod 33.

[0035] Of the two sets of round rods 33, one set of round rods 33 installed on the inclined switching bar 24 is in an inclined state and the first spur gear 35 connected to it is offset from one side of the rack ring 29. The other set of the two sets of first spur gears 35 is meshed with the rack ring 29.

[0036] The first bevel gear 34, which meshes with the rotating second bevel gear 416, rotates with the connected round rod 33 and the first spur gear 35. The rotating first spur gear 35 can drive the components in the switching assembly 2 to achieve power transmission.

[0037] The drive assembly 4 includes two sets of wheel frames 41 fixedly mounted on the lower ends of three sets of fixed sleeves 25 on both sides. A shaft cylinder 42 is rotatably mounted inside the wheel frame 41, and a drive wheel 43 is fixedly mounted on the outer side of the shaft cylinder 42. Several friction strips 44 are fixedly mounted on the outer side of the drive wheel 43. A mating hole 45 is provided on the inner side of the shaft cylinder 42 near both sides. Three sets of first drive rods 46 are mounted inside the shaft cylinder 42 mounted on the lower two sets of fixed sleeves 25. Three sets of second drive rods 47 are rotatably mounted on both sides of the upper set of shaft cylinders 42. Sleeves 48 are fitted around the outer sides of the three sets of first drive rods 46 and the three sets of second drive rods 47. The inner side of the sleeve 48 corresponds to the first drive rod 46, the second drive rod 47, and the third drive rod 48. Both drive rods 47 have connection holes 49. The upper set of three sets of fixed sleeves 25 has mounting plates 410 fixedly installed at both ends. The front set of two sets of mounting plates 410 has a drive motor 411 fixedly installed at the front end. The drive motor 411 has a transmission shaft 412 fixedly installed at the rear of its rotating shaft. Two sets of first synchronous pulleys 413 are fixedly installed on the outside of the transmission shaft 412. The upper set of three sets of fixed sleeves 25 has two sets of second synchronous pulleys 414 fixedly installed on both sides of the shaft cylinder 42. Two sets of synchronous belts 415 are fitted on the outside of the two sets of first synchronous pulleys 413 and the second synchronous pulleys 414 on the same side. A second bevel gear 416 is fixedly installed on the outside of the transmission shaft 412 near the two sets of first synchronous pulleys 413.

[0038] The outer side of the drive wheel 43 is provided with an arc-shaped groove. The three sets of first drive rods 46 and the three sets of second drive rods 47 are staggered. The opposite side of the three sets of first drive rods 46 and second drive rods 47 is fixedly provided with a limit ring and is movably inserted into the connecting hole 49. The three sets of first drive rods 46 are respectively movably arranged in the lower docking hole 45. The transmission shaft 412 passes through the two sets of mounting plates 410 and is connected to the rotating shaft of the drive motor 411. The second bevel gear 416 is meshed with the first bevel gear 34.

[0039] By opening the baffle 212 to unfold the inlet 210, the main body 1 of the power transmission line enters the inner movable ring 28 through the inlet 210. Then, by pushing or pulling with three sets of hydraulic cylinders 27, the drive components 4 on both sides can be unfolded or brought closer together. The drive components 4 on both sides can be switched to clamp or unfold the main body 1 of the power transmission line. At this time, the drive motor 411 on the clamping side drives the transmission shaft 412, the two sets of first synchronous pulleys 413, and the second bevel gear 416 to rotate. The rotating first synchronous pulley 413 drives the connected synchronous belt 415, and the synchronous belt 415 drives the connected second synchronous pulley 414 and the connected shaft cylinder 42. The drive wheel 43 rotates, and during the rotation, the friction strip 44 increases the friction. The rotating shaft cylinder 42 drives three sets of second drive rods 47 on each side to drive the sleeves 48 on both sides to rotate. The two sets of rotating sleeves 48 simultaneously drive three sets of first drive rods 46 on each side. The three sets of first drive rods 46 then drive the lower shaft cylinder 42 and drive wheel 43 to rotate, thereby causing the entire drive assembly 4 to move automatically to the unfolded side. Through the connection of the sleeves 48, the distance between the two drive assemblies 4 can be changed when they approach and unfold, and the rotation during drive can be satisfied. The automatic movement of the equipment can reduce the risk of manual inspection.

[0040] Working principle: In use, by opening the baffle 212 to unfold the inlet 210, the main body 1 of the transmission line enters the inner movable ring 28 through the inlet 210. Then, by pushing or pulling the three sets of hydraulic cylinders 27, the two drive components 4 on both sides can be unfolded or brought closer together. The two drive components 4 on both sides can be switched to clamp or unfold the main body 1 of the transmission line. At this time, the drive motor 411 on the clamping side drives the transmission shaft 412, the two sets of first synchronous pulleys 413, and the second bevel gear 416 to rotate. The rotating first synchronous pulley 413 drives the connected synchronous belt 415, and the synchronous belt 415 drives the connected second synchronous pulley 414 and the connected shaft. The cylinder 42 and drive wheel 43 rotate, and during the rotation, the friction strip 44 increases the friction. The rotating cylinder 42 drives three sets of second drive rods 47 on each side to drive the sleeves 48 on both sides to rotate. The two sets of rotating sleeves 48 simultaneously drive three sets of first drive rods 46 on each side, and the three sets of first drive rods 46 drive the lower cylinder 42 and drive wheel 43 to rotate, thereby automatically moving the drive assembly 4 to the unfolded side. Through the connection of the sleeves 48, the distance between the two drive assemblies 4 can be changed when they approach and unfold, and the rotation during drive can be satisfied. The automatic movement of the equipment reduces the risk of manual inspection. Simultaneously, the first bevel gear 34, meshing with the rotating second bevel gear 416, rotates with the connected round rod 33 and the first spur gear 35. The rotating first spur gear 35 drives the components in the switching assembly 2, realizing power transmission. Additionally, the rotating first spur gear 35 drives the meshing rack ring 29 and inner movable ring 28, causing the inner movable ring 28 to drive the camera device 213 to rotate within the outer ring 21. The movement of the drive assembly 4 drives the camera device 213 to rotate. When the device moves on the power transmission line body 1, the rotating camera device 213 automatically rotates the entire surface of the power transmission line body 1. The surface inspection avoids blind spots that affect the inspection effect and makes it easier to inspect between two adjacent sets of transmission line bodies 1. When facing the damaged part of the transmission line body 1, the three sets of hydraulic cylinders 27 can pull or push the drive components 4 installed on the fixed sleeves 25 on both sides respectively. The two sets of drive components 4 can switch between unfolding and closing to cross the damaged section of the transmission line body 1, avoiding crushing and secondary breakage of the conductor, ensuring the continuity of inspection and line safety. When the hydraulic cylinders 27 control the drive components 4 on both sides to be in the unfolded state, the baffle 212 can be opened to remove the whole from the outside of the transmission line body 1, which facilitates the overall installation and disassembly work.

[0041] The transmission line body 1, hydraulic cylinder 27, camera equipment 213, and drive motor 411 in this invention are common knowledge in the field, and their working principles are well-known technologies. The appropriate model is selected according to actual use, so they will not be explained in detail.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting a fault of interruption of a power transmission line, comprising a power transmission line body (1), characterized in that: The outer side of the power transmission line body (1) is provided with a switching assembly (2), the upper side of the switching assembly (2) is provided with a transmission assembly (3), the outer side of the power transmission line body (1) is provided with a driving assembly (4) near both sides of the switching assembly (2), the switching assembly (2) comprises an outer ring (21) sleeved on the outer side of the power transmission line body (1), three groups of U-shaped plates (22) are fixedly arranged on the outer side of the outer ring (21), outer guard plates (23) are fixedly arranged on the outer side of the three groups of U-shaped plates (22), switching strips (24) are rotatably arranged on the inner side of the three groups of U-shaped plates (22), fixed sleeves (25) are fixedly arranged on both sides of the three groups of switching strips (24), shaft sleeves (26) are fixedly arranged on one side of the upper end of the fixed sleeve (25), hydraulic cylinders (27) are movably arranged between the three groups of U-shaped plates (22) and the shaft sleeves (26) on one side of the three groups of fixed sleeves (25), an inner movable ring (28) is rotatably arranged on the inner side of the outer ring (21), two groups of rack rings (29) are fixedly arranged on the inner side of the inner movable ring (28), the lower side of the outer ring (21) and the inner movable ring (28) are provided with inlet openings (210), two groups of connecting shafts (211) are fixedly arranged on the front side of the inlet openings (210), baffle plates (212) are rotatably arranged on the inner side of the two groups of connecting shafts (211), and two groups of camera devices (213) are fixedly arranged on the inner wall of the inner movable ring (28); The transmission assembly (3) comprises two groups of fixed plates (31) fixedly arranged at the lower ends of the three groups of switching strips (24), the lower end of the fixed plate (31) is fixedly provided with a cylinder (32), the inner side of the cylinder (32) is rotatably provided with a round rod (33), one side of the round rod (33) is fixedly provided with a first bevel gear (34), and the other side of the round rod (33) is fixedly provided with a first cylindrical gear (35). The drive assembly (4) includes two sets of wheel frames (41) fixedly mounted on the lower ends of three sets of fixed sleeves (25) on both sides. A shaft cylinder (42) is rotatably mounted on the inner side of the wheel frame (41). A drive wheel (43) is fixedly mounted on the outer side of the shaft cylinder (42). Several friction strips (44) are fixedly mounted on the outer side of the drive wheel (43). A mating hole (45) is opened on the inner side of the shaft cylinder (42) near both sides. Three sets of first drive rods (46) are mounted on the inner side of the shaft cylinder (42) mounted on the lower two sets of fixed sleeves (25). Three sets of second drive rods (47) are rotatably mounted on the inner sides of the upper set of the three sets of shaft cylinders (42). A sleeve (48) is fitted on the outer side of the three sets of first drive rods (46) and the three sets of second drive rods (47). The inner side of the sleeve (48) corresponds to the first drive rod (46). 46) A connecting hole (49) is provided at the position of the second drive rod (47). The front and rear ends of the upper set of the three sets of fixed sleeves (25) are fixedly installed with mounting plates (410). The front end of the front set of the two sets of mounting plates (410) is fixedly installed with a drive motor (411). A transmission shaft (412) is fixedly provided on the rear side of the rotating shaft of the drive motor (411). Two sets of first synchronous pulleys (413) are fixedly provided on the outer side of the transmission shaft (412). The two sides of the shaft cylinder (42) provided on the upper side of the three sets of fixed sleeves (25) are fixedly provided with second synchronous pulleys (414). Two sets of synchronous belts (415) are sleeved on the outer side of the two sets of first synchronous pulleys (413) and the second synchronous pulleys (414) on the same side. A second bevel gear (416) is fixedly provided on the outer side of the transmission shaft (412) near the two sets of first synchronous pulleys (413). The outer side of the drive wheel (43) is provided with an arc groove. The three sets of first drive rods (46) and the three sets of second drive rods (47) are staggered. The opposite side of the three sets of first drive rods (46) and second drive rods (47) is fixedly provided with a limit ring and is movably inserted into the connection hole (49). The three sets of first drive rods (46) are respectively movably arranged in the lower docking holes (45). The transmission shaft (412) passes through the two sets of mounting plates (410) and is connected to the rotating shaft of the drive motor (411). The second bevel gear (416) is meshed with the first bevel gear (34).

2. A fault current detection device for a power transmission line according to claim 1, characterised in that: The three sets of U-shaped plates (22) and outer protective plates (23) are arranged in a ring evenly. One side of the three sets of switching strips (24) is set in an inclined state. The hydraulic cylinder (27) pushes the bushing (26) and fixing sleeve (25) on one side in an inclined state.

3. A fault current detection device for a power transmission line according to claim 1, characterized in that: The inlet (210) allows the main body (1) of the transmission line to pass through. The baffle (212) is blocked in the inlet (210). One side of the baffle (212) is fixedly connected by bolts.

4. A fault current detection device for a power transmission line according to claim 1, characterized in that: The two groups of the round rods (33) are in the inclined state, and the first column gear (35) connected with one group of the round rods (33) is staggered with the one side rack ring (29), and the other group of the first column gears (35) is in meshing with the rack ring (29).

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