Power distribution network fault detection device and method thereof

Abstract

The invention discloses a power distribution network fault detection device and method. The power distribution network fault detection device comprises a working shell, a cable needing to be detected is clamped at the top of an arc-shaped strip, a forward and reverse motor is started, the forward and reverse motor drives a rotating shaft to rotate, the rotating shaft drives a lead screw to rotate, the lead screw drives a threaded plate to rotate, and the power distribution network fault detection device is limited by a transverse rod; a threaded plate slides along the outer wall of the cross rod, the threaded plate drives a vertical rod to move, the vertical rod drives an arc-shaped shell to move, the arc-shaped shell drives an arc-shaped strip to move, and the arc-shaped strip drives a cable to move, so that the cable moves to the top of a first rotating roller, and meanwhile, a rotating shaft drives a first gear to rotate; the first gear drives the toothed belt to rotate, the toothed belt drives the second gear to rotate, the second gear drives the cross rod to rotate, the cross rod drives the first rotating roller to rotate, and the whole device can walk and move along the outer wall of the cable in the rotating process of the first rotating roller.

Description

Technical Field

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

[0002] The distribution network is composed of overhead lines, cables, towers, distribution transformers, disconnectors, reactive power compensators and some ancillary facilities. It plays an important role in distributing electric energy in the power grid. According to the function of the power supply area, it can be divided into urban distribution network, rural distribution network and factory distribution network. In the urban power grid system, the main network refers to the power grid with a voltage level of 110KV and above, which mainly connects the regional high-voltage (220KV and above) power grid. The distribution network refers to the power grid with a voltage level of 35KV and below, and its function is to supply power to various distribution stations and various power loads in the city.

[0003] The existing technology for troubleshooting distribution network fault points generally uses manpower to conduct segmented inspection of high-altitude power cables. In this process, each section of the cable needs to be disconnected from the power grid, and then the cable is manually inspected to see if there is a fault problem. This method is relatively inefficient and dangerous. Summary of the invention

[0004] The object of the present invention is to provide a power distribution network fault detection device and method thereof to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a power distribution network fault detection device and method, comprising a working shell, one side of the working shell is fixedly connected to a containing shell, and also comprises a fault detection mechanism, the fault detection mechanism comprises a forward and reverse motor fixedly connected to one side of the inner wall of the working shell, the output end of the forward and reverse motor is fixedly connected to a rotating shaft, one end of the rotating shaft passes through the working shell and extends to one side of the inner wall of the containing shell, one end of the rotating shaft is fixedly connected to the outer wall of a screw rod, the screw rod is arranged inside the containing shell, the outer wall of the screw rod is threadedly connected to a threaded plate, and the outer wall of the rotating shaft is provided with a walking assembly.

[0006] Furthermore, the walking assembly includes a first gear fixedly connected to the outer wall of the rotating shaft away from the end of the screw rod, the first gear is arranged inside the working shell, the outer wall of the first gear is meshedly connected with a toothed belt, the inner walls at both ends of the toothed belt are respectively meshedly connected with second gears, and one side of the second gear is rotatably connected to one side of the inner wall of the working shell.

[0007] Furthermore, a cross bar is fixedly connected to the inner wall of the second gear, one end of the cross bar passes through the working shell and extends to one side of the inner wall of the containing shell, one end of the cross bar passes through and is slidably connected to the inner wall of the threaded plate, and one end of the outer wall of the cross bar is fixedly connected to the first rotating roller, which is arranged inside the containing shell.

[0008] Furthermore, a clamping assembly is provided at the top of the threaded plate, and the clamping assembly includes a vertical rod that passes through and is slidably connected to both sides of the top of the threaded plate, the top of the vertical rod is fixedly connected to an arc shell, and the two sides of the bottom of the arc shell close to the vertical rod are respectively fixedly connected to a first spring, the bottom of the first spring is fixedly connected to the top of the threaded plate, the bottom of the inner wall of the arc shell is fixedly connected to a current detector, the two ends of one side of the outer wall of the arc shell are respectively fixedly connected to arc bars, and one side of the inner wall of the accommodating shell is passed through and is slidably connected to a round rod.

[0009] Furthermore, one end of the round rod passes through and extends to the interior of the working shell, one end of the round rod is fixedly connected to a flexible plate, a side of the flexible plate close to the round rod is fixedly connected to a second spring, one end of the second spring is fixedly connected to one side of the inner wall of the accommodating shell, and one end of the round rod away from the flexible plate is fixedly connected to a fixed plate, and the fixed plate is arranged inside the working shell.

[0010] Furthermore, a stabilizing assembly is provided at the bottom of the fixed plate, and the stabilizing assembly includes a rotating plate rotatably connected to both sides of the bottom of the fixed plate, one end of the rotating plate is rotatably connected to a slider, and sliding grooves are respectively provided at both ends of one side of the inner wall of the working shell, the outer wall of one end of the slider is slidably connected to the inner wall of the sliding groove, and the top of the slider is fixedly connected to a concave plate.

[0011] Furthermore, a connecting rod is fixedly connected to one side of the top of the concave plate, and a limiting hole is opened on one side of the inner wall of the accommodating shell. The limiting hole passes through and extends to the interior of the working shell. The outer wall of one end of the connecting rod is slidably connected to the inner wall of the limiting hole. The end of the connecting rod away from the concave plate is fixedly connected to a square plate, and sliding frames are respectively passed through and slidably connected on both sides of the top of the square plate.

[0012] Furthermore, a concave frame is fixedly connected to the bottom of the sliding frame, a fixed rod is fixedly connected to one side of the inner wall of the concave frame, a second rotating roller is rotatably connected to the outer wall of the fixed rod, a return spring is fixedly connected to the top of the concave frame, and the top of the return spring is fixedly connected to the bottom of the square plate.

[0013] Furthermore, a cleaning assembly is provided at one end of the sliding frame, and the cleaning assembly includes a horizontal plate fixedly connected between the two sliding frames, a strip groove is opened on the top of the square plate, and rotating bars are rotatably connected on both sides of the horizontal plate, and a moving block is rotatably connected on one end of the rotating bar away from the horizontal plate, and the outer wall of the bottom end of the moving block is slidably connected to the inner wall of the strip groove, and L-shaped plates are fixedly connected on both sides of the moving block, and a fixed frame is fixedly connected on one side of the bottom end of the L-shaped plate, and a flexible cleaning arc block is fixedly connected on one side of the fixed frame.

[0014] A method for detecting a power distribution network fault comprises the following steps: Step 1: Walk along the outer wall of the cable; Step 2: Improve the clamping effect of the cable; Step 3: Improve the operation stability of the device; Step 4: Clean the outer wall of the cable.

[0015] The present invention has the following beneficial effects: According to the present invention, the cable to be inspected is clamped at the top of the arc-shaped bar, and the forward and reverse motors are started. The forward and reverse motors drive the rotating shaft to rotate, the rotating shaft drives the screw rod to rotate, the screw rod drives the threaded plate to rotate, and the threaded plate is limited by the cross bar, and the threaded plate slides along the outer wall of the cross bar, and the threaded plate drives the vertical rod to move, the vertical rod drives the arc-shaped shell to move, the arc-shaped shell drives the arc-shaped bar to move, and the arc-shaped bar drives the cable to move, so that the cable moves to the top of the first rotating roller, and at the same time, the rotating shaft drives the first gear to rotate, the first gear drives the toothed belt to rotate, the toothed belt drives the second gear to rotate, and the second gear drives the cross bar to rotate. The cross bar drives the first rotating roller to rotate, and the rotation of the first rotating roller enables the entire device to move along the outer wall of the cable. The current detector is arranged inside the arc shell, so that the current of the cable can be detected. The outer wall of one end of the screw rod is not provided with threads. When the threaded plate moves to the unthreaded part of the screw rod, the threaded plate no longer moves, so as to prevent the device from getting stuck during operation. When the cable moves, the cable will contact the side wall of the flexible plate, and will be clamped by the flexible plate and the arc shell, so as to prevent the cable from shaking during movement, thereby improving the detection accuracy of the current detector on the cable.

[0016] (2) In the present invention, the flexible plate drives the round rod to move under the squeezing of the cable line, the round rod drives the fixed plate to move, the fixed plate drives the rotating plate to move, and the rotating plate drives the slider to vertically descend along the inner wall of the slide groove under the limitation of the slide groove, the slider drives the concave plate to descend, the concave plate drives the connecting rod to descend, the connecting rod drives the square plate to descend, the square plate drives the sliding frame to descend, the sliding frame drives the concave frame to descend, the concave frame drives the fixed rod to descend, and the fixed rod drives the second rotating roller to descend. During the descent process, the second rotating roller will come into contact with the top of the cable line, press the cable line downward, and make the cable line further fit and contact with the top of the first rotating roller, thereby improving the stability of the movement of the device and the side of improving the detection accuracy of the current detector for the cable line.

[0017] (3) According to the present invention, when the cable moves down, the cable causes the arc bar to move down, the arc bar drives the arc shell to move down, and the arc shell drives the vertical rod to move down along the inner wall of the threaded plate, which can prevent the cable from failing to fit tightly with the top of the first rotating roller. When the forward and reverse motors are started in reverse, the screw drives the threaded plate to move in the reverse direction, which is elastically deformed by the first spring, the first spring drives the arc shell to move up, the arc shell drives the arc bar to move up, and the arc bar drives the cable to move up, which improves the disassembly efficiency of the cable and prevents the device from getting stuck during operation.

[0018] (4) In the present invention, when the second rotating roller comes into contact with the cable, it is subjected to the reaction force of the cable, so that the second rotating roller approaches the square plate, and the second rotating roller drives the fixed rod to move upward, the fixed rod drives the concave frame to move upward, the concave frame drives the sliding frame to move upward, the sliding frame drives the cross plate to move upward, the cross plate drives the rotating bar to move upward, and is limited by the strip groove. The rotating bar drives the moving block to slide along the inner wall of the strip groove. The moving block drives the L-shaped plate to move, the L-shaped plate drives the fixed frame to move, and the fixed frame drives the flexible cleaning arc block to move. The two flexible cleaning arc blocks approach each other, thereby clamping the two ends of the cable. When the device moves, the flexible cleaning arc blocks can scrape and clean the impurities at the two ends of the cable, thereby improving the detection accuracy of the current detector for the cable and preventing impurities from affecting the detection effect of the current detector.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall top view structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the containment shell of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the working shell of the present invention; Figure 5 This is a schematic diagram of the top view of the square plate structure of the present invention; Figure 6 It is a schematic diagram of the side structure of the vertical rod of the present invention; Figure 7 For the present invention Figure 2 A magnified view of middle; Figure 8 For the present invention Figure 2 Enlarged view of middle B; Fig. 9 For the present invention Figure 4 Enlarged view of middle C; Fig.10 It is a schematic diagram of the detection method of the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, working shell; 2, containing shell; 4, fault detection mechanism; 41, forward and reverse motor; 42, rotating shaft; 43, screw rod; 44, threaded plate; 45, walking assembly; 46, clamping assembly; 47, stabilizing assembly; 48, cleaning assembly; 451, first gear; 452, toothed belt; 453, second gear; 454, cross bar; 455, first rotating roller; 461, vertical rod; 462, first spring; 463, arc shell; 464, current detector; 465, arc bar; 466, round rod; 467 , second spring; 468, flexible plate; 469, fixed plate; 471, rotating plate; 472, slide groove; 473, slider; 474, concave plate; 475, connecting rod; 476, limiting hole; 477, square plate; 478, sliding frame; 479, concave frame; 4710, return spring; 4711, fixed rod; 4712, second rotating roller; 481, cross plate; 482, rotating bar; 483, strip groove; 484, moving block; 485, L-shaped plate; 486, fixed frame; 487, flexible cleaning arc block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1, please refer to Figure 1 - Fig.10 As shown, the present invention is a power distribution network fault detection device and method, comprising a working shell 1, a receiving shell 2 is fixedly connected to one side of the working shell 1, and further comprising; The fault detection mechanism 4 includes a forward and reverse motor 41 fixedly connected to one side of the inner wall of the working shell 1, and the output end of the forward and reverse motor 41 is fixedly connected to a rotating shaft 42. One end of the rotating shaft 42 passes through the working shell 1 and extends to one side of the inner wall of the containing shell 2. The outer wall of one end of the rotating shaft 42 is fixedly connected to a screw rod 43, and the screw rod 43 is arranged inside the containing shell 2. The outer wall of the screw rod 43 is threadedly connected to a threaded plate 44, and the outer wall of the rotating shaft 42 is provided with a walking assembly 45.

[0025] The walking assembly 45 includes a first gear 451 fixedly connected to the outer wall of the rotating shaft 42 away from the screw rod 43 at one end. The first gear 451 is arranged inside the working shell 1. The outer wall of the first gear 451 is meshedly connected with a toothed belt 452. The inner walls at both ends of the toothed belt 452 are respectively meshedly connected with second gears 453. One side of the second gear 453 is rotatably connected to one side of the inner wall of the working shell 1.

[0026] The inner wall of the second gear 453 is fixedly connected with a cross bar 454, one end of which passes through the working shell 1 and extends to one side of the inner wall of the containing shell 2, one end of which passes through and is slidably connected to the inner wall of the threaded plate 44, and one end of the outer wall of the cross bar 454 is fixedly connected with a first rotating roller 455, which is arranged inside the containing shell 2.

[0027] A clamping assembly 46 is provided at the top of the threaded plate 44. The clamping assembly 46 includes a vertical rod 461 that penetrates and is slidably connected to both sides of the top of the threaded plate 44. An arc shell 463 is fixedly connected to the top of the vertical rod 461. The arc shell 463 is fixedly connected to both sides of the bottom of the vertical rod 461. The first spring 462 is fixedly connected to the bottom of the first spring 462. The bottom of the inner wall of the arc shell 463 is fixedly connected to the top of the threaded plate 44. A current detector 464 is fixedly connected to the bottom of the inner wall of the arc shell 463. The cable to be inspected is clamped on the top of the arc strip 465, and the forward and reverse motor 41 is started. The forward and reverse motor 41 drives the rotating shaft 42 to rotate. The movable shaft 42 drives the screw rod 43 to rotate, the screw rod 43 drives the threaded plate 44 to rotate, and is limited by the cross bar 454. The threaded plate 44 slides along the outer wall of the cross bar 454, and the threaded plate 44 drives the vertical rod 461 to move, the vertical rod 461 drives the arc shell 463 to move, the arc shell 463 drives the arc strip 465 to move, and the arc strip 465 drives the cable to move, so that the cable moves to the top of the first rotating roller 455. At the same time, the rotating shaft 42 drives the first gear 451 to rotate, the first gear 451 drives the toothed belt 452 to rotate, and the toothed belt 452 drives the second gear The wheel 453 rotates, the second gear 453 drives the cross bar 454 to rotate, the cross bar 454 drives the first rotating roller 455 to rotate, and the first rotating roller 455 rotates during the rotation of the entire device to move along the outer wall of the cable line, and the current detector 464 inside the arc shell 463 is set to detect the current of the cable line. The two ends of one side of the outer wall of the arc shell 463 are respectively fixedly connected with arc strips 465, and one side of the inner wall of the accommodating shell 2 is penetrated and slidably connected with a round rod 466. When the cable line moves down, the cable line causes the arc strip 465 to descend, and the arc strip 465 brings The movable arc shell 463 descends, and the arc shell 463 drives the vertical rod 461 to move downward along the inner wall of the threaded plate 44, which can prevent the cable from being unable to fit tightly with the top of the first rotating roller 455, and when the forward and reverse motor 41 is started in reverse, the screw rod 43 drives the threaded plate 44 to move in the reverse direction, and is elastically deformed by the first spring 462. The first spring 462 drives the arc shell 463 to move upward, and the arc shell 463 drives the arc bar 465 to move upward, and the arc bar 465 drives the cable to move upward, which improves the disassembly efficiency of the cable and prevents the device from getting stuck during operation.

[0028] One end of the round rod 466 passes through and extends to the interior of the working shell 1, and one end of the round rod 466 is fixedly connected to a flexible plate 468. One end of the outer wall of the screw rod 43 is not provided with a thread. When the threaded plate 44 moves to the unthreaded part of the screw rod 43, the threaded plate 44 no longer continues to move to prevent the device from getting stuck during operation. When the cable moves, the cable will contact the side wall of the flexible plate 468 and be clamped by the flexible plate 468 and the arc shell 463, which can prevent the cable from shaking during movement, thereby improving the detection accuracy of the current detector 464 for the cable. The side of the flexible plate 468 close to the round rod 466 is fixedly connected to a second spring 467, and one end of the second spring 467 is fixedly connected to one side of the inner wall of the accommodating shell 2. The end of the round rod 466 away from the flexible plate 468 is fixedly connected to a fixed plate 469, and the fixed plate 469 is arranged inside the working shell 1.

[0029] A stabilizing assembly 47 is provided at the bottom of the fixed plate 469, and the stabilizing assembly 47 includes a rotating plate 471 rotatably connected to both sides of the bottom of the fixed plate 469, one end of the rotating plate 471 is rotatably connected to a slider 473, and both ends of one side of the inner wall of the working shell 1 are respectively provided with sliding grooves 472, the outer wall of one end of the slider 473 is slidably connected to the inner wall of the sliding groove 472, and the top of the slider 473 is fixedly connected to a concave plate 474.

[0030] A connecting rod 475 is fixedly connected to one side of the top of the concave plate 474, and a limiting hole 476 is opened on one side of the inner wall of the accommodating shell 2. The limiting hole 476 passes through and extends to the interior of the working shell 1. The outer wall of one end of the connecting rod 475 is slidably connected to the inner wall of the limiting hole 476. The end of the connecting rod 475 away from the concave plate 474 is fixedly connected to a square plate 477, and sliding frames 478 are respectively passed through and slidably connected on both sides of the top of the square plate 477.

[0031] The bottom of the sliding frame 478 is fixedly connected with a concave frame 479, one side of the inner wall of the concave frame 479 is fixedly connected with a fixing rod 4711, and the outer wall of the fixing rod 4711 is rotatably connected with a second rotating roller 4712. Under the extrusion of the cable, the flexible plate 468 drives the round rod 466 to move, the round rod 466 drives the fixed plate 469 to move, the fixed plate 469 drives the rotating plate 471 to move, and the sliding groove 472 limits the rotation of the rotating plate 471, and the sliding block 473 is driven to vertically descend along the inner wall of the sliding groove 472 by the rotating plate 471. The sliding block 473 drives the concave plate 474 to descend, the concave plate 474 drives the connecting rod 475 to descend, and the connecting rod 475 drives the square plate 477 to The square plate 477 drives the sliding frame 478 to descend, the sliding frame 478 drives the concave frame 479 to descend, the concave frame 479 drives the fixing rod 4711 to descend, the fixing rod 4711 drives the second rotating roller 4712 to descend, and the second rotating roller 4712 will come into contact with the top of the cable during the descent process, pressing the cable downward, so that the cable further comes into contact with the top of the first rotating roller 455, thereby improving the stability of the movement of the device and laterally improving the detection accuracy of the current detector 464 on the cable. The top of the concave frame 479 is fixedly connected with a reset spring 4710, and the top of the reset spring 4710 is fixedly connected to the bottom of the square plate 477.

[0032] In embodiment 2, a cleaning assembly 48 is provided at one end of the sliding frame 478, and the cleaning assembly 48 includes a horizontal plate 481 fixedly connected between the two sliding frames 478, a strip groove 483 is provided on the top of the square plate 477, and rotating bars 482 are rotatably connected on both sides of the horizontal plate 481, and one end of the rotating bar 482 away from the horizontal plate 481 is rotatably connected to a moving block 484, and the outer wall of the bottom end of the moving block 484 is slidably connected to the inner wall of the strip groove 483, and L-shaped plates 485 are fixedly connected on both sides of the moving block 484, and a fixed frame 486 is fixedly connected on one side of the bottom end of the L-shaped plate 485, and a flexible cleaning arc block 487 is fixedly connected on one side of the fixed frame 486. When the second rotating roller 4712 comes into contact with the cable, it is subjected to the reaction force of the cable, so that the second rotating roller 4712 approaches the square plate 477, and the second rotating roller 4712 drives the fixed rod 4711 to move upward , the fixed rod 4711 drives the concave frame 479 to move upward, the concave frame 479 drives the sliding frame 478 to move upward, the sliding frame 478 drives the cross plate 481 to move upward, the cross plate 481 drives the rotating bar 482 to move upward, and is limited by the strip groove 483. The rotating bar 482 drives the moving block 484 to slide along the inner wall of the strip groove 483, and the moving block 484 drives the L-shaped plate 485 to move, and the L-shaped plate 485 drives the fixed frame 486 to move, and the fixed frame 486 drives the flexible cleaning arc block 487 to move, and the two flexible cleaning arc blocks 487 approach each other, thereby clamping the two ends of the cable. When the device moves, the flexible cleaning arc block 487 can scrape and clean the impurities at both ends of the cable, thereby improving the detection accuracy of the current detector 464 on the cable and preventing impurities from affecting the detection effect of the current detector 464.

[0033] A method for detecting a power distribution network fault comprises the following steps: Step 1: Walk along the outer wall of the cable; Step 2: Improve the clamping effect of the cable; Step 3: Improve the operation stability of the device; Step 4: Clean the outer wall of the cable.

[0034] When in use, the cable to be checked is clamped on the top of the arc strip 465, and the forward and reverse motors 41 are started. The forward and reverse motors 41 drive the rotating shaft 42 to rotate, and the rotating shaft 42 drives the screw rod 43 to rotate, and the screw rod 43 drives the threaded plate 44 to rotate. The threaded plate 44 is limited by the cross bar 454, and the threaded plate 44 slides along the outer wall of the cross bar 454. The threaded plate 44 drives the vertical rod 461 to move, and the vertical rod 461 drives the arc shell 463 to move, and the arc shell 463 drives the arc strip 465 to move, and the arc strip 465 drives the cable to move, so that the cable moves to the top of the first rotating roller 455. At the same time, the rotating shaft 42 drives the first gear 451 to rotate, and the first gear 451 drives the toothed belt 452 to rotate, and the toothed belt 452 drives the second gear 453 to rotate. The second gear 453 drives the cross bar 454 to rotate, and the cross bar 454 drives the first rotating roller 455 to rotate. During the rotation of the first rotating roller 455, the entire device can move along the outer wall of the cable. The current detector 464 inside the arc shell 463 is set to detect the current of the cable. The outer wall of one end of the screw rod 43 is not provided with threads. When the threaded plate 44 moves to the unthreaded part of the screw rod 43, the threaded plate 44 no longer moves to prevent the device from getting stuck during operation. When the cable moves, the cable will contact the side wall of the flexible plate 468, and be clamped by the flexible plate 468 and the arc shell 463, which can prevent the cable from shaking during movement, thereby improving the detection accuracy of the current detector 464 on the cable.

[0035] Under the squeeze of the cable, the flexible plate 468 drives the round rod 466 to move, the round rod 466 drives the fixed plate 469 to move, the fixed plate 469 drives the rotating plate 471 to move, and the sliding groove 472 limits the rotation of the rotating plate 471, and the sliding block 473 is driven to vertically descend along the inner wall of the sliding groove 472, and the sliding block 473 drives the concave plate 474 to descend, and the concave plate 474 drives the connecting rod 475 to descend, and the connecting rod 475 drives the square plate 477 to descend, and the square plate 477 drives the sliding block 473 to descend. The frame 478 descends, the sliding frame 478 drives the concave frame 479 to descend, the concave frame 479 drives the fixed rod 4711 to descend, the fixed rod 4711 drives the second rotating roller 4712 to descend, and the second rotating roller 4712 will come into contact with the top of the cable during the descending process, pressing the cable downward, so that the cable further comes into contact with the top of the first rotating roller 455, thereby improving the stability of the movement of the device and laterally improving the detection accuracy of the current detector 464 on the cable.

[0036] When the cable moves down, the cable causes the arc strip 465 to descend, and the arc strip 465 drives the arc shell 463 to descend, and the arc shell 463 drives the vertical rod 461 to descend along the inner wall of the threaded plate 44, which can prevent the cable from being unable to fit tightly with the top of the first rotating roller 455, and when the forward and reverse motor 41 is started in reverse, the screw rod 43 drives the threaded plate 44 to move in the opposite direction, and is elastically deformed by the first spring 462. The first spring 462 drives the arc shell 463 to move upward, and the arc shell 463 drives the arc strip 465 to move upward, and the arc strip 465 drives the cable to move upward, thereby improving the disassembly efficiency of the cable and preventing the device from getting stuck during operation.

[0037] When the second rotating roller 4712 comes into contact with the cable, it is subjected to the reaction force of the cable so that the second rotating roller 4712 moves closer to the square plate 477, and the second rotating roller 4712 drives the fixed rod 4711 to move upward, the fixed rod 4711 drives the concave frame 479 to move upward, the concave frame 479 drives the sliding frame 478 to move upward, the sliding frame 478 drives the cross plate 481 to move upward, the cross plate 481 drives the rotating bar 482 to move upward, and is limited by the strip groove 483, and the rotating bar 482 drives the moving block 484 to move along the strip groove 48 3, the inner wall of the square rod is slid, the moving block 484 drives the L-shaped plate 485 to move, the L-shaped plate 485 drives the fixing frame 486 to move, the fixing frame 486 drives the flexible cleaning arc block 487 to move, and the two flexible cleaning arc blocks 487 are close to each other, so as to clamp the two ends of the cable. When the device moves, the flexible cleaning arc block 487 can scrape and clean the impurities at both ends of the cable, thereby improving the detection accuracy of the current detector 464 on the cable and preventing impurities from affecting the detection effect of the current detector 464.

[0038] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power distribution network fault detection device, characterized in that: It comprises a working shell (1), one side of the working shell (1) being fixedly connected to a containing shell (2), and further comprises: A fault detection mechanism (4), the fault detection mechanism (4) comprising a forward and reverse motor (41) fixedly connected to one side of the inner wall of the working shell (1), the output end of the forward and reverse motor (41) being fixedly connected to a rotating shaft (42), one end of the rotating shaft (42) passing through the working shell (1) and extending to one side of the inner wall of the containing shell (2), one end of the rotating shaft (42) being fixedly connected to an outer wall of a screw rod (43), the screw rod (43) being arranged inside the containing shell (2), the outer wall of the screw rod (43) being threadedly connected to a threaded plate (44), and the outer wall of the rotating shaft (42) being provided with a walking assembly (45).

2. A power distribution network fault detection device according to claim 1, characterized in that: The travel assembly (45) comprises a first gear (451) fixedly connected to the outer wall of an end of the rotating shaft (42) away from the screw rod (43); the first gear (451) is arranged inside the working shell (1); the outer wall of the first gear (451) is meshedly connected to a toothed belt (452); the inner walls at both ends of the toothed belt (452) are respectively meshedly connected to second gears (453); and one side of the second gear (453) is rotatably connected to one side of the inner wall of the working shell (1).

3. A power distribution network fault detection device according to claim 2, characterized in that: A cross bar (454) is fixedly connected to the inner wall of the second gear (453); one end of the cross bar (454) passes through the working shell (1) and extends to one side of the inner wall of the accommodating shell (2); one end of the cross bar (454) passes through and is slidably connected to the inner wall of the threaded plate (44); one end of the cross bar (454) is fixedly connected to the outer wall of the first rotating roller (455); the first rotating roller (455) is arranged inside the accommodating shell (2).

4. A power distribution network fault detection device according to claim 3, characterized in that: A clamping assembly (46) is provided at the top of the threaded plate (44), and the clamping assembly (46) comprises a vertical rod (461) penetrating through and slidably connected to both sides of the top of the threaded plate (44); an arc-shaped shell (463) is fixedly connected to the top of the vertical rod (461); first springs (462) are respectively fixedly connected to both sides of the bottom of the arc-shaped shell (463) close to the vertical rod (461); the bottom of the first spring (462) is fixedly connected to the top of the threaded plate (44); a current detector (464) is fixedly connected to the bottom of the inner wall of the arc-shaped shell (463); arc-shaped strips (465) are respectively fixedly connected to both ends of one side of the outer wall of the arc-shaped shell (463); and a round rod (466) is penetrating through and slidably connected to one side of the inner wall of the accommodating shell (2).

5. A power distribution network fault detection device according to claim 4, characterized in that: One end of the round rod (466) passes through and extends into the interior of the working shell (1); one end of the round rod (466) is fixedly connected to a flexible plate (468); a side of the flexible plate (468) close to the round rod (466) is fixedly connected to a second spring (467); one end of the second spring (467) is fixedly connected to a side of an inner wall of the accommodating shell (2); and one end of the round rod (466) away from the flexible plate (468) is fixedly connected to a fixing plate (469); the fixing plate (469) is arranged inside the working shell (1).

6. A power distribution network fault detection device according to claim 5, characterized in that: A stabilizing component (47) is provided at the bottom of the fixed plate (469), and the stabilizing component (47) comprises a rotating plate (471) rotatably connected to two sides of the bottom of the fixed plate (469), one end of the rotating plate (471) is rotatably connected to a slider (473), and two ends of one side of the inner wall of the working shell (1) are respectively provided with sliding grooves (472), the outer wall of one end of the slider (473) is slidably connected to the inner wall of the sliding groove (472), and the top of the slider (473) is fixedly connected to a concave plate (474).

7. A power distribution network fault detection device according to claim 6, characterized in that: A connecting rod (475) is fixedly connected to one side of the top end of the concave plate (474); a limiting hole (476) is provided on one side of the inner wall of the accommodating shell (2); the limiting hole (476) penetrates and extends into the interior of the working shell (1); an outer wall of one end of the connecting rod (475) is slidably connected to the inner wall of the limiting hole (476); an end of the connecting rod (475) away from the concave plate (474) is fixedly connected to a square plate (477); and sliding frames (478) are respectively penetrated and slidably connected to the two sides of the top of the square plate (477).

8. A power distribution network fault detection device according to claim 7, characterized in that: The bottom of the sliding frame (478) is fixedly connected to a concave frame (479), one side of the inner wall of the concave frame (479) is fixedly connected to a fixing rod (4711), the outer wall of the fixing rod (4711) is rotatably connected to a second rotating roller (4712), the top of the concave frame (479) is fixedly connected to a return spring (4710), and the top of the return spring (4710) is fixedly connected to the bottom of the square plate (477).

9. A power distribution network fault detection device according to claim 8, characterized in that: A cleaning assembly (48) is provided at one end of the sliding frame (478), and the cleaning assembly (48) comprises a transverse plate (481) fixedly connected between the two sliding frames (478); a strip groove (483) is provided on the top of the square plate (477); two sides of the transverse plate (481) are rotatably connected to rotating bars (482); one end of the rotating bar (482) away from the transverse plate (481) is rotatably connected to a moving block (484); the outer wall of the bottom end of the moving block (484) is slidably connected to the inner wall of the strip groove (483); two sides of the moving block (484) are fixedly connected to L-shaped plates (485); one side of the bottom end of the L-shaped plate (485) is fixedly connected to a fixing frame (486); one side of the fixing frame (486) is fixedly connected to a flexible cleaning arc block (487).

10. A method for detecting a power distribution network fault, using the power distribution network fault detection device as claimed in claim 9, characterized in that: The following steps are included: Step 1: Walk along the outer wall of the cable; Step 2: Improve the clamping effect of the cable; Step 3: Improve the operation stability of the device; Step 4: Clean the outer wall of the cable.

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