Power failure detection device for power transmission line

Abstract

The invention discloses a power failure detection device for a power transmission line, and relates to the technical field of power transmission line failure detection.The power failure detection device comprises a bearing assembly, a lifting assembly is arranged at the upper end of the bearing assembly, and a connecting assembly is arranged at the upper end of the lifting assembly. According to the scheme, the fault detection assembly can be rapidly assembled and disassembled, when fault detection is carried out on an overhead transmission line, the fault detection assembly does not need to be installed through manual climbing, potential safety hazards such as high-altitude falling and electric shock caused by climbing operation are reduced, meanwhile, an autonomous driving mode can be switched according to cables with different bearing capacities, and the fault detection efficiency is improved. The first electromagnet is separated from the magnetic connection base in a magnetic attraction mode, the fault detection assembly moves independently or in an auxiliary supporting mode, namely the first electromagnet is connected with the magnetic connection base in a magnetic attraction mode, the lifting assembly is manually pushed to move cooperatively, and the applicability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line fault detection, and in particular to a power fault detection device for a power transmission line. Background Art

[0002] Transmission lines are key facilities for transmitting electric energy in power systems. They use transformers to increase the electric energy generated by generators to a higher voltage, and then connect them to the transmission network through control equipment such as circuit breakers to achieve long-distance electric energy transmission. The structural forms of transmission lines are mainly divided into overhead transmission lines and cable lines.

[0003] Existing transmission line fault detection technology usually relies on manual inspection or the use of fixed detection structures for detection. Manual inspection is time-consuming and inefficient when troubleshooting longer lines, while traditional fixed detection structures are less flexible. When inspecting overhead lines, manual climbing of pole towers is required for installation, which poses safety hazards such as falling from heights and electric shock. Especially in complex terrain or inclement weather, the detection efficiency is low and the risk is significantly increased. At the same time, the diameters and carrying capacities of transmission lines of different voltage levels vary greatly, and traditional clamping mechanisms are difficult to adaptively adjust, which may cause mechanical damage to the cables. Therefore, a power fault detection device for transmission lines is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] In order to solve the above technical problems, a power fault detection device for transmission lines is provided. This technical solution solves the problem that the existing transmission line fault detection technology proposed in the above background technology usually relies on manual detection or adopts a fixed detection structure for detection. Manual detection is time-consuming and inefficient when checking longer lines, while the traditional fixed detection structure has poor flexibility. When inspecting overhead lines, manual climbing of pole towers is required for installation, which poses safety hazards such as falling from heights and electric shock. Especially in complex terrain or bad weather, the detection efficiency is low and the risk is significantly increased. At the same time, the diameters and carrying capacities of transmission lines of different voltage levels vary greatly, and traditional clamping mechanisms are difficult to adaptively adjust, which may cause mechanical damage to the cables.

[0005] In order to achieve the above objects, the technical solution adopted by the present invention is: A power fault detection device for a power transmission line includes a bearing assembly, a lifting assembly is provided at the upper end of the bearing assembly, a connecting assembly is provided at the upper end of the lifting assembly, and a fault detection assembly is provided at the upper end of the connecting assembly; Wherein, the carrying assembly includes a carrying box, and the upper end of the carrying box is fixedly connected to a cable reel; The lifting assembly includes a multi-stage electric telescopic rod fixedly mounted on the upper end of the carrying box, the output end of the multi-stage electric telescopic rod is fixedly connected to a support base, and the center of the upper end of the support base is fixedly connected to a first electromagnet; The connecting assembly includes a magnetic connection seat magnetically attached to the upper end of the first electromagnet, the upper end of the magnetic connection seat is fixedly connected to a spherical support seat, the inner portion of the spherical support seat is rotatably connected to a spherical connection portion, the outer surface of the spherical connection portion is fixedly connected to a connecting rod, the other end of the connecting rod is fixedly connected to a triangular balancing base, and a through groove is formed through the upper front end of the triangular balancing base; The fault detection component includes a U-shaped fixed shell fixedly connected to the upper end of the triangular balancing chassis, three equidistantly distributed electric push rods are fixedly installed on the inner top and inner bottom ends of the U-shaped fixed shell, the output end of the electric push rod is fixedly connected to a support plate, the end of the support plate away from the electric push rod is fixedly connected to a plurality of first damping springs, the other end of the first damping spring is fixedly connected to a fixed seat, an arc-shaped mounting groove is provided on the opposite ends of the two front fixed seats and the opposite ends of the fixed seats on the two rear sides, a C-shaped metal sheet is fixedly connected to the inner side of the C-shaped metal sheet, two symmetrically distributed mounting plates are fixedly connected to the inner side of the C-shaped metal sheet, a fixed wheel is provided between the two mounting plates, a rectangular mounting groove is provided on the opposite ends of the two middle fixed seats, a drive shaft is rotatably connected to the inside of the rectangular mounting groove, a drive motor for driving the drive shaft to rotate is fixedly installed on the right end of the fixed seat located on the middle upper side, a drive wheel is fixedly connected to the outer surface of the drive shaft, a fixing groove is provided on the outer surface of the drive wheel and the fixed wheel, and a pressure sensor is provided on the surface of the fixing groove.

[0006] Preferably, a sliding groove is provided through the left end of the mounting plate, a guide rod is fixedly connected to the inside of the sliding groove, a sliding block is slidably connected to the outer surface of the guide rod, the sliding block is slidably connected to the inside of the sliding groove, the fixed wheel is rotatably connected between the two sliding blocks, and a third damping spring is sleeved on the outer surface of the guide rod.

[0007] Preferably, a mounting bevel block is fixedly connected to the right inner wall of the U-shaped fixed shell, and a plurality of cameras are arranged on the inclined surface of the mounting bevel block.

[0008] Preferably, the inner top and inner bottom ends of the U-shaped fixed shell are fixedly connected with guide bevels, the lower end of the upper guide bevel is flush with the lower end of the upper fixed seat, and the upper end of the lower guide bevel is flush with the upper end of the lower fixed seat.

[0009] Preferably, a plurality of power modules are provided at the inner bottom end of the U-shaped fixed shell near the right inner wall of the U-shaped fixed shell, and a plurality of wire threading tubes are connected to the right side of the U-shaped fixed shell.

[0010] Preferably, one end of the fixing seat close to the support plate is fixedly connected to two symmetrically distributed fixing rods, and the other end of the fixing rod passes through the end of the support plate close to the fixing seat and is fixedly connected to an end limit block.

[0011] Preferably, a telescopic slot is provided inside the fixing seat, a second electromagnet is fixedly connected to the inside of the telescopic slot, an end of the second electromagnet close to the fixed rod is fixedly connected to a second damping spring, the other end of the second damping spring is fixedly connected to a brake block, the brake block is slidably connected to the inside of the telescopic slot, and an end of the brake block close to the fixed rod abuts against an end of the fixed rod close to the brake block.

[0012] Preferably, the four corners of the upper end of the support seat are fixedly connected to an external fixed sleeve, the internal sliding connection of the external fixed sleeve is connected to the balance frame support rod, and the lower end of the support seat is fixedly installed with a lifting cylinder, the output end of the lifting cylinder passes through the lower end of the support seat and is fixedly connected to the lower end of the balance frame support rod.

[0013] Preferably, the upper end of the balancing frame support rod abuts against the lower end of the triangular balancing frame.

[0014] Preferably, an electrical installation cavity is provided at the front end of the carrying box, a box door is hinged at the front end of the carrying box, and brake universal wheels are fixedly connected to the four corners of the lower end of the carrying box.

[0015] Preferably, an adjustment slot is provided at the bottom end of the through slot, and a plurality of counterweight blocks are inserted into the adjustment slot.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This solution proposes a power fault detection device for power transmission lines. Through the magnetic connection between the first electromagnet and the magnetic connection seat, the fault detection component can be quickly installed and removed. The multi-stage electric telescopic rod can lift the fault detection component to the target height. When performing fault detection on overhead power transmission lines, there is no need for manual climbing to install the fault detection component, which reduces the occurrence of safety hazards such as falling from height and electric shock caused by climbing operations.

[0017] In this solution, a triangular balancing base is provided at the lower end of the fault detection component, and a through slot is provided at the upper front end of the triangular balancing base. This design causes the center of gravity of the triangular balancing base to be biased toward the lower end of the triangle during the lifting process, making the center of gravity closer to its bottom. Through the action of its own gravity, the triangular balancing base can naturally maintain stability, so that the fault detection component is always in a vertical position in the working state, reducing the influence of external interference.

[0018] In this solution, for overhead cables with different load-bearing capacities, the appropriate detection mode can be selected independently. The "autonomous drive mode" means that the first electromagnet is magnetically separated from the magnetic connection base, and the fault detection component moves independently. It is suitable for cables with high mechanical strength such as steel-core aluminum stranded wire, and the detection speed is fast; the "auxiliary support mode" means that the first electromagnet is magnetically connected to the magnetic connection base, and the lifting component is manually pushed to move in coordination. It is suitable for fragile lines such as old lines and small-diameter distribution cables, avoiding secondary damage caused by detection, improving the flexibility of the device when used, and also increasing the scope of application of the equipment.

[0019] In this solution, the fault detection component can be driven by a drive motor and move on the surface of the transmission line to automatically detect faults. There is no need for manual step-by-step troubleshooting of line faults, which improves the efficiency of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is the front view of the present invention; Figure 3 This is a schematic diagram of the structure of the installation of the inclined block in the present invention; Figure 4 Schematic diagram of the structure of the fault detection component in the present invention; Figure 5 Schematic diagram of the structure of the arc-shaped installation groove in the present invention; Figure 6 It is a structural schematic diagram of the telescopic slot in the present invention; Figure 7 Schematic diagram of the structure of the outer fixing sleeve in the present invention; Figure 8 This is a schematic structural diagram of the rectangular mounting groove in the present invention; Figure 9 It is a structural schematic diagram of the bearing box in the present invention; Figure 10 It is a structural schematic diagram of the sliding groove in the present invention.

[0021] The numbers in the figure are: 1. Load-bearing assembly; 101. Load-bearing box; 102. Brake universal wheel; 103. Box door; 104. Cable reel; 105. Electrical installation cavity; 2. Lifting assembly; 201. Support base; 202. First electromagnet; 203. External fixing sleeve; 204. Balancing frame support rod; 205. Lifting cylinder; 206. Multi-stage electric telescopic rod; 3. Fault detection assembly; 301. U-shaped fixed housing; 302. Electric push rod; 303. Support plate; 304. First damping spring; 305. Fixed seat; 306. Arc-shaped mounting groove; 307. Rectangular mounting groove; 308. C-shaped metal sheet; 309. Mounting plate; 3010. Fixed wheel; 3011. Drive shaft; 3012. Drive motor; 3013. Drive wheel; 3014. Fixed groove; 3015. Fixed rod; 3016, end stopper; 3017, telescopic slot; 3018, second electromagnet; 3019, second damping spring; 3020, brake block; 3021, mounting bevel; 3022, camera; 3023, power module; 3024, threading tube; 3025, guide bevel; 3026, pressure sensor; 3027, sliding slot; 3028, guide rod; 3029, sliding block; 3030, third damping spring; 4. Connecting assembly; 401. Triangular balancing base; 402. Through slot; 403. Connecting rod; 404. Spherical connecting part; 405. Spherical supporting seat; 406. Magnetic connecting seat; 407. Adjusting slot; 408. Counterweight. DETAILED DESCRIPTION

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0023] Reference Figures 1-6 、 Figure 8 and Figure 10 As shown, a power fault detection device for a power transmission line includes a bearing assembly 1, a lifting assembly 2 is provided at the upper end of the bearing assembly 1, a connecting assembly 4 is provided at the upper end of the lifting assembly 2, and a fault detection assembly 3 is provided at the upper end of the connecting assembly 4; The carrying assembly 1 includes a carrying box 101 , and a cable reel 104 is fixedly connected to the upper end of the carrying box 101 ; The lifting assembly 2 includes a multi-stage electric telescopic rod 206 fixedly mounted on the upper end of the carrying box 101. The output end of the multi-stage electric telescopic rod 206 is fixedly connected to the support base 201. The center of the upper end of the support base 201 is fixedly connected to the first electromagnet 202. The connecting component 4 includes a magnetic connecting seat 406 that is magnetically attracted to the upper end of the first electromagnet 202. The upper end of the magnetic connecting seat 406 is fixedly connected to a spherical supporting seat 405. The internal rotation of the spherical supporting seat 405 is connected to a spherical connecting part 404. The outer surface of the spherical connecting part 404 is fixedly connected to a connecting rod 403. The other end of the connecting rod 403 is fixedly connected to a triangular balancing base 401. A through groove 402 is opened through the upper front end of the triangular balancing base 401.

[0024] Furthermore, an electrical installation cavity 105 is provided at the front end of the carrying box 101 , a door 103 is hinged at the front end of the carrying box 101 , and brake universal wheels 102 are fixedly connected to the four corners of the lower end of the carrying box 101 .

[0025] Specifically, the brake caster 102 is used to cooperate with the carrying box 101 to realize the rapid transition of the device. A brake pad is provided on one side of the brake caster 102. The brake caster 102 can be locked by turning the brake pad. After the brake caster 102 is locked, the wheel can be unlocked by turning the brake pad in the opposite direction. The electrical installation cavity 105 is equipped with a PLC controller, a communication module and a lithium battery pack and other electrical components for realizing the normal operation of the detection device. The PLC controller can adopt a model such as Siemens S7-1200 PLC controller. The PLC controller serves as the device The control core is responsible for the logical scheduling of the entire equipment, data processing and sensor signal integration, realizing the automation and intelligent control of the detection process. The communication module can adopt a model such as Huawei ME909s-821 communication module. The communication module is electrically connected to the PLC controller. The built-in SIM card can store data. The antenna is fixed on the inside of the electrical installation cavity 105 and is used to upload the detection data to the cloud operation and maintenance platform in real time. At the same time, it can receive remote control commands. The lithium battery pack serves as the main power supply for the device, supports offline detection and external power charging, and ensures continuous operation in complex environments.

[0026] Furthermore, the box door 103 is used to protect the electrical components inside the electrical installation cavity 105. It can be rotated to open and close, which is convenient for maintenance of the components inside the electrical installation cavity 105. A handle and a door lock are provided on the box door 103. The handle is provided to facilitate the opening of the box door 103. The door lock requires a special key to open to prevent non-staff from touching the internal electrical components.

[0027] Furthermore, the power cord of the cable reel 104 is electrically connected to the lithium battery pack. A power cable is wound inside the cable reel 104. The length of the cable is designed according to actual needs and can be retracted and extended through the operation of the reel. The end of the cable can be connected to other parts of the device to realize the transmission of power and data.

[0028] Furthermore, the fault detection component 3 is arranged at the upper end of the triangular balancing base 401. When the first electromagnet 202 in the lifting component 2 is energized, it can adsorb the magnetic connection seat 406. The first electromagnet 202 can adsorb the magnetic connection seat 406 to fix the fault detection component 3 at the upper end of the lifting component 2 through the adsorption effect of the magnetic connection seat 406. At this time, by starting the multi-stage electric telescopic rod 206, the fault detection component 3 can be driven to rise and fall.

[0029] Specifically, when fault detection is performed on an overhead transmission line, the fault detection component 3 can be lifted by the multi-stage electric telescopic rod 206, and the fault detection component 3 can be sent to the vicinity of the transmission line to be detected. There is no need for manual climbing to install the fault detection component 3, which reduces the occurrence of safety hazards such as falling from height and electric shock caused by climbing operations and improves the safety of the detection operation.

[0030] Furthermore, the triangular balancing base 401 is used to balance the fault detection component 3. A through slot 402 is provided on the upper front end of the triangular balancing base 401. This design allows the center of gravity of the triangular balancing base 401 to be biased toward the lower end of the triangle during the lifting process, so that the center of gravity is closer to its bottom. Through the action of its own gravity, the triangular balancing base 401 can naturally remain stable, so that the fault detection component 3 is always in a vertical position in the working state, avoiding deflection or swinging due to external factors.

[0031] Furthermore, an adjustment slot 407 is provided at the bottom end of the through slot 402, and a plurality of counterweight blocks 408 are inserted into the interior of the adjustment slot 407. In a detection environment with certain wind interference, by appropriately increasing the number of counterweight blocks 408, the gravity of the triangular balancing base 401 itself can be increased, and the shaking caused by the wind can be reduced, thereby improving the overall wind resistance of the fault detection component 3.

[0032] Furthermore, the four corners of the upper end of the support seat 201 are fixedly connected to the external fixed sleeve 203, and the internal sliding connection of the external fixed sleeve 203 is connected to the balance frame support rod 204. The lower end of the support seat 201 is fixedly installed with a lifting cylinder 205. The output end of the lifting cylinder 205 passes through the lower end of the support seat 201 and is fixedly connected to the lower end of the balance frame support rod 204. The upper end of the balance frame support rod 204 abuts against the lower end of the triangular balance base 401.

[0033] When the lifting assembly 2 drives the fault detection assembly 3 to move upward, the upper ends of the four balance frame support rods 204 abut against the inclined surfaces on both sides of the lower end of the triangular balance frame 401, thereby supporting and fixing the triangular balance frame 401, thereby preventing the fault detection assembly 3 from shaking when the lifting assembly 2 drives the fault detection assembly 3 to move upward, thereby improving the stability of the lifting operation.

[0034] Reference Figures 1-10 As shown, the fault detection component 3 includes a U-shaped fixed shell 301 fixedly connected to the upper end of the triangular balancing chassis 401, and three equally spaced electric push rods 302 are fixedly installed on the inner top and inner bottom of the U-shaped fixed shell 301. The output end of the electric push rod 302 is fixedly connected to a support plate 303, and the end of the support plate 303 away from the electric push rod 302 is fixedly connected to a plurality of first damping springs 304. The other end of the first damping spring 304 is fixedly connected to a fixing seat 305, and the opposite ends of the two front fixing seats 305 and the opposite ends of the two rear fixing seats 305 are each provided with an arc-shaped mounting groove 306, and the inner side of the arc-shaped mounting groove 306 is fixedly connected to a C-shaped metal sheet. 308. Two symmetrically distributed mounting plates 309 are fixedly connected to the inner side of the C-shaped metal sheet 308, a fixed wheel 3010 is arranged between the two mounting plates 309, and rectangular mounting grooves 307 are provided at opposite ends of the two middle fixing seats 305. A driving shaft 3011 is rotatably connected inside the rectangular mounting grooves 307. A driving motor 3012 for driving the driving shaft 3011 to rotate is fixedly installed on the right end of the fixing seat 305 located on the upper middle side, and a driving wheel 3013 is fixedly connected to the outer surface of the driving shaft 3011. A fixing groove 3014 is provided on the outer surfaces of the driving wheel 3013 and the fixing wheel 3010, and a pressure sensor 3026 is provided on the surface of the fixing groove 3014.

[0035] Furthermore, a sliding groove 3027 is formed through the left end of the mounting plate 309, and a guide rod 3028 is fixedly connected to the inside of the sliding groove 3027. A sliding block 3029 is slidingly connected to the outer surface of the guide rod 3028. The sliding block 3029 is slidingly connected to the inside of the sliding groove 3027. The fixed wheel 3010 is rotatably connected between the two sliding blocks 3029. The outer surface of the guide rod 3028 is sleeved with a third damping spring 3030.

[0036] Furthermore, one end of the fixing seat 305 close to the support plate 303 is fixedly connected to two symmetrically distributed fixing rods 3015 , and the other end of the fixing rod 3015 passes through the end of the support plate 303 close to the fixing seat 305 and is fixedly connected to an end limit block 3016 .

[0037] Furthermore, a telescopic slot 3017 is opened inside the fixed seat 305, and a second electromagnet 3018 is fixedly connected to the inside of the telescopic slot 3017. The end of the second electromagnet 3018 close to the fixed rod 3015 is fixedly connected to the second damping spring 3019, and the other end of the second damping spring 3019 is fixedly connected to the brake block 3020. The brake block 3020 is slidably connected to the inside of the telescopic slot 3017, and the end of the brake block 3020 close to the fixed rod 3015 abuts against the end of the fixed rod 3015 close to the brake block 3020.

[0038] Specifically, the electric push rod 302 can push the upper and lower fixed seats 305 closer to each other. When the two front fixed seats 305 approach each other and the two rear fixed seats 305 approach each other, the fixed wheel 3010 inside the fixed seat 305 will contact the outer surface of the cable. At this time, the pressure caused by the cable on the fixed wheel 3010 will cause the fixed wheel 3010 to drive the sliding block 3029 to compress the third damping spring 3030, and then fine-tune the position of the fixed wheel 3010 to adapt to the diameter of the cable. When the two C-shaped metal pieces 308 are fully closed, the electric push rod 302 is closed, and the first damping spring 304 plays a buffering role during the closing process of the two C-shaped metal pieces 308, reducing the damage caused by rigid collision of the two C-shaped metal pieces 308 when closing.

[0039] Furthermore, before the two C-shaped metal pieces 308 are closed, the second electromagnet 3018 is in an energized state. When the second electromagnet 3018 is in an energized state, it can absorb the brake block 3020, causing the brake block 3020 to compress the second damping spring 3019 and separate from the fixed rod 3015. The C-shaped metal piece 308 will squeeze the first damping spring 304, causing the fixed rod 3015 to move. When the two C-shaped metal pieces 308 are closed, the position of the fixed rod 3015 tends to be stable. At this time, the second electromagnet 3018 is de-energized, and the brake block 3020 is elastically released by the second damping spring 3019. Under the action of force, it is reset and abutted against the surface of the fixed rod 3015. A plurality of grooves are provided at the end of the fixed rod 3015 opposite to the brake shoe 3020, and a plurality of protrusions are provided at the end of the brake shoe 3020 opposite to the fixed rod 3015. When the brake shoe 3020 is reset and abutted against the surface of the fixed rod 3015 under the action of the elastic force of the second damping spring 3019, the protrusions on the brake shoe 3020 will be inserted into the grooves on the fixed rod 3015, which can fix the position of the fixed rod 3015, thereby ensuring the stability of the fixing seat 305 and the C-shaped metal sheet 308 during the detection process.

[0040] Furthermore, the two electric push rods 302 in the middle are used to control the driving wheel 3013 to clamp the cable. When the driving wheel 3013 approaches the cable for clamping, the middle fixing seat 305 will squeeze the first damping spring 304 in the middle. The greater the compression of the first damping spring 304, the greater the clamping force that can be provided. The pressure sensor 3026 arranged in the fixing groove 3014 of the driving wheel 3013 can monitor the magnitude of the clamping force. When the clamping force is appropriate, the brake block 3020 is released by cutting off the power to the second electromagnet 3018, so that the current position of the middle fixing seat 305 can be fixed. During the detection process, the driving motor 3012 drives the driving shaft 3011 to rotate, so that the upper driving wheel 3013 rotates. Through the friction between the two driving wheels 3013 and the cable, the fault detection component 3 can be pushed to move along the surface of the cable.

[0041] Furthermore, the driving motor 3012 is a servo motor.

[0042] Furthermore, a detection circuit module is also provided on the right inner wall of the U-shaped fixed shell 301, and a current transformer is embedded in the C-shaped metal sheet 308. Terminal blocks extend from both ends of the C-shaped metal sheet 308 and are connected to the detection circuit module inside the U-shaped fixed shell 301 through wires. When current passes through the metal cylinder formed by the C-shaped metal sheets 308, eddy currents are generated on the metal cylinder formed by the two C-shaped metal sheets 308. The eddy currents are transmitted to the detection circuit module along the wires. Since there is no current at the fault location, the fault detection component 3 is moved as a whole on the outside of the circuit wire until there is no eddy current on the two C-shaped metal sheets 308. At this time, the position of the two C-shaped metal sheets 308 is the position of the circuit wire fault.

[0043] Furthermore, the pressure sensor 3026 adopts a thin film piezoelectric ceramic sensor, which is embedded in the surface of the fixed groove 3014 and is used to monitor in real time the clamping force of the fixed wheel 3010 and the driving wheel 3013 on the cable. During the detection process, the clamping force of the upper and lower fixed wheels 3010 on the cable can be adjusted through the synchronous movement of the upper electric push rod 302 and the lower electric push rod 302 to avoid deformation of the cable due to excessive clamping force on one side.

[0044] Furthermore, a mounting bevel block 3021 is fixedly connected to the right inner wall of the U-shaped fixed housing 301 , and a plurality of cameras 3022 are provided on the inclined surface of the mounting bevel block 3021 .

[0045] Specifically, the camera 3022 uses a 12-megapixel industrial camera. The camera 3022 faces the middle area of ​​the two fixing seats 305 and is used to observe the position of the cable. The staff can judge whether the fixing wheel 3010 is accurately clamped on the surface of the cable through the picture taken by the camera 3022.

[0046] Furthermore, the inner top and inner bottom ends of the U-shaped fixed shell 301 are fixedly connected with a guide bevel 3025, the lower end of the upper guide bevel 3025 is flush with the lower end of the upper fixed seat 305, and the upper end of the lower guide bevel 3025 is flush with the upper end of the lower fixed seat 305.

[0047] Specifically, the two guide bevels 3025 form a guide channel, and the cable can enter the inner side of the fixing seat 305 through this channel.

[0048] Furthermore, a plurality of power modules 3023 are provided at the inner bottom end of the U-shaped fixed housing 301 close to the right inner wall of the U-shaped fixed housing 301 , and a plurality of wire threading tubes 3024 are connected to the right side of the U-shaped fixed housing 301 .

[0049] Specifically, the wire tube 3024 provides a channel for connecting the power cable on the cable reel 104 with the power module 3023. The power cable on the cable reel 104 sends power to each power module 3023. Each power module 3023 is used to realize independent power supply of each electric push rod 302, thereby improving the flexibility of the fixed seat 305 for position adjustment.

[0050] Working principle: When performing fault detection on an overhead power transmission line, first move the device to the detection location through the brake universal wheel 102, then energize the first electromagnet 202, and fix the fault detection component 3 to the upper end of the lifting component 2 through the adsorption effect of the first electromagnet 202 on the magnetic connection seat 406, and then adjust its angle by rotating the triangular balancing frame 401 so that the inclined surfaces on both sides of the lower end of the triangular balancing frame 401 are respectively opposite to the left and right balancing frame support rods 204, and then start the lifting cylinder 205 to push the balancing frame support rod 204 to slide inside the outer fixed sleeve 203, and push the balancing frame support rod 204 upward until the upper end of the balancing frame support rod 204 is aligned with the lower end of the triangular balancing frame 401. The inclined surfaces on both sides are abutted to support and fix the triangular balancing base 401, and then the multi-stage electric telescopic rod 206 is started to lift the support seat 201 and the connecting component 4 and the fault detection component 3 above to an appropriate height. Then, the outer tube of the multi-stage electric telescopic rod 206 is pushed to make the brake universal wheel 102 drive the fault detection component 3 to move or rotate horizontally, so that the channel formed by the two guide bevels 3025 is opposite to the cable. Through the image feedback from the camera 3022, it is observed whether the position of the cable can pass through the channel. If not, the height of the fault detection component 3 can be appropriately adjusted by the multi-stage electric telescopic rod 206. If it can pass through the channel, the outer tube of the multi-stage electric telescopic rod 206 is pushed to make the entire device horizontal. Move and place the cable between the two C-shaped metal sheets 308. Then, the electric push rod 302 pushes the fixed wheel 3010 and the driving wheel 3013 to clamp the cable. At the same time, the two C-shaped metal sheets 308 are closed to form a detection circuit. After the clamping is completed, the second electromagnet 3018 is powered off to release the brake block 3020 to lock the position of each fixed rod 3015. Then the lifting cylinder 205 drives the balance frame support rod 204 to shrink and separate from the triangular balance base 401. At the same time, according to actual needs, whether to power off the first electromagnet 202 can be selected. For cables with higher load-bearing capacity, the first electromagnet 202 can be powered off, and the driving motor 3012 can be used to drive the driving wheel 3013 to rotate, so that the fault detection component 3 is on the cable. The surface moves autonomously. In a detection environment with certain wind interference, when this detection method is adopted, the number of counterweights 408 can be appropriately increased to increase the gravity of the triangular balancing chassis 401 itself, thereby reducing the shaking caused by wind, thereby improving the overall wind resistance of the fault detection component 3. If the carrying capacity of the cable is low, it is possible to choose not to cut off the power to the first electromagnet 202, and use the support seat 201 to support it. At the same time, the power of the drive motor 3012 is reduced to make the fault detection component 3 move slowly on the cable. The staff pushes the outer cylinder of the multi-stage electric telescopic rod 206 to cooperate with the movement of the fault detection component 3 for detection, so as to reduce the strain on the cable caused by the gravity of the fault detection component 3 itself. During the mobile detection process,When the current passes through the metal cylinder composed of the C-shaped metal sheets 308, eddy current will be generated on the metal cylinder composed of the two C-shaped metal sheets 308. The eddy current will be transmitted to the detection circuit module along the wire. Because there is no current at the fault location, the fault detection component 3 moves on the outside of the circuit wire until there is no eddy current on the two C-shaped metal sheets 308. At this time, the position of the two C-shaped metal sheets 308 is the position of the circuit wire fault. When the detection is completed, the lifting cylinder 205 is started to push out the balance frame support rod 204, and the three The angular balancing base 401 provides support and fixation, while the electric push rod 302 drives each fixing seat 305 to reset. The horizontal moving device then separates the fault detection assembly 3 from the cable. The multi-stage electric telescopic rod 206 is retracted, lowering the fault detection assembly 3 to its initial position. The first electromagnet 202 is then de-energized, releasing the adsorption of the magnetic connection seat 406. The fault detection assembly 3 can then be removed and stored. For cables that are not installed overhead, the fault detection assembly 3 does not need to be installed on the upper end of the lifting assembly 2 and can be used directly.

[0051] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A power fault detection device for a power transmission line, characterized in that: It comprises a bearing assembly (1), a lifting assembly (2) is provided at the upper end of the bearing assembly (1), a connecting assembly (4) is provided at the upper end of the lifting assembly (2), and a fault detection assembly (3) is provided at the upper end of the connecting assembly (4); The bearing assembly (1) comprises a bearing box (101), and the upper end of the bearing box (101) is fixedly connected to a cable reel (104); The lifting assembly (2) comprises a multi-stage electric telescopic rod (206) fixedly mounted on the upper end of the carrying box (101); the output end of the multi-stage electric telescopic rod (206) is fixedly connected to a support base (201); and the center of the upper end of the support base (201) is fixedly connected to a first electromagnet (202); The connecting assembly (4) includes a magnetic connection seat (406) magnetically attached to the upper end of the first electromagnet (202), the upper end of the magnetic connection seat (406) is fixedly connected to a spherical support seat (405), the interior of the spherical support seat (405) is rotatably connected to a spherical connection portion (404), the outer surface of the spherical connection portion (404) is fixedly connected to a connecting rod (403), the other end of the connecting rod (403) is fixedly connected to a triangular balancing base (401), a through slot (402) is provided through the upper front end of the triangular balancing base (401), an adjustment slot (407) is provided at the bottom end of the through slot (402), and a plurality of counterweights (408) are inserted into the adjustment slot (407); The fault detection component (3) comprises a U-shaped fixed housing (301) fixedly connected to the upper end of the triangular balancing chassis (401), three equally spaced electric push rods (302) are fixedly installed on the inner top and inner bottom of the U-shaped fixed housing (301), the output end of the electric push rod (302) is fixedly connected to a support plate (303), one end of the support plate (303) away from the electric push rod (302) is fixedly connected to a plurality of first damping springs (304), the other end of the first damping spring (304) is fixedly connected to a fixing seat (305), the opposite ends of the two fixing seats (305) on the front side and the opposite ends of the fixing seats (305) on the two rear sides are each provided with an arc-shaped mounting groove (306), the inner side of the arc-shaped mounting groove (306) is fixedly connected to a C-shaped metal sheet (308) ), two symmetrically distributed mounting plates (309) are fixedly connected to the inner side of the C-shaped metal sheet (308), a fixed wheel (3010) is provided between the two mounting plates (309), and a rectangular mounting groove (307) is provided at the opposite ends of the two middle fixing seats (305), a driving shaft (3011) is rotatably connected inside the rectangular mounting groove (307), a driving motor (3012) for driving the driving shaft (3011) to rotate is fixedly installed at the right end of the fixing seat (305) located on the upper middle side, a driving wheel (3013) is fixedly connected to the outer surface of the driving shaft (3011), a fixing groove (3014) is provided on the outer surfaces of the driving wheel (3013) and the fixing wheel (3010), and a pressure sensor (3026) is provided on the surface of the fixing groove (3014).

2. The power fault detection device for a power transmission line according to claim 1, characterized in that: The left end of each mounting plate (309) is provided with a sliding groove (3027), the interior of the sliding groove (3027) is fixedly connected to a guide rod (3028), the outer surface of the guide rod (3028) is slidably connected to a sliding block (3029), the sliding block (3029) is slidably connected to the interior of the sliding groove (3027), the fixed wheel (3010) is rotatably connected between the two sliding blocks (3029), and the outer surface of the guide rod (3028) is sleeved with a third damping spring (3030).

3. The power fault detection device for a power transmission line according to claim 1, characterized in that: A mounting bevel block (3021) is fixedly connected to the right inner wall of the U-shaped fixed housing (301), and a plurality of cameras (3022) are provided on the bevel surface of the mounting bevel block (3021).

4. The power fault detection device for a power transmission line according to claim 1, characterized in that: The inner top and inner bottom of the U-shaped fixed shell (301) are both fixedly connected to a guide bevel (3025), the lower end of the upper guide bevel (3025) is flush with the lower end of the upper fixed seat (305), and the upper end of the lower guide bevel (3025) is flush with the upper end of the lower fixed seat (305).

5. The power fault detection device for a power transmission line according to claim 1, characterized in that: A plurality of power modules (3023) are provided at the inner bottom end of the U-shaped fixed housing (301) close to the right inner wall of the U-shaped fixed housing (301), and a plurality of threading tubes (3024) are connected to the right side of the U-shaped fixed housing (301).

6. The power fault detection device for a power transmission line according to claim 1, characterized in that: One end of the fixing seat (305) close to the support plate (303) is fixedly connected to two symmetrically distributed fixing rods (3015), and the other end of the fixing rod (3015) passes through one end of the support plate (303) close to the fixing seat (305) and is fixedly connected to an end limit block (3016).

7. The power fault detection device for a power transmission line according to claim 1, characterized in that: A telescopic slot (3017) is provided inside the fixing seat (305), a second electromagnet (3018) is fixedly connected inside the telescopic slot (3017), an end of the second electromagnet (3018) close to the fixing rod (3015) is fixedly connected to a second damping spring (3019), and the other end of the second damping spring (3019) is fixedly connected to a brake block (3020), the brake block (3020) is slidably connected to the inside of the telescopic slot (3017), and an end of the brake block (3020) close to the fixing rod (3015) abuts against an end of the fixing rod (3015) close to the brake block (3020).

8. The power fault detection device for a power transmission line according to claim 1, characterized in that: The four corners of the upper end of the support seat (201) are fixedly connected to external fixed sleeves (203), the interior of the external fixed sleeves (203) is slidably connected to a balance frame support rod (204), and a lifting cylinder (205) is fixedly installed at the lower end of the support seat (201), and the output end of the lifting cylinder (205) passes through the lower end of the support seat (201) and is fixedly connected to the lower end of the balance frame support rod (204).

9. The power fault detection device for a power transmission line according to claim 8, characterized in that: The upper end of the balancing frame support rod (204) abuts against the lower end of the triangular balancing frame (401).

10. The power fault detection device for a power transmission line according to claim 1, characterized in that: The front end of the carrying box (101) is provided with an electrical installation cavity (105), the front end of the carrying box (101) is hinged with a box door (103), and the four corners of the lower end of the carrying box (101) are fixedly connected with brake universal wheels (102).

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