Overhead line fault positioning device and use method thereof

Abstract

The invention provides an overhead line fault positioning device and a use method thereof, and aims to solve the problems that an existing overhead line fault positioning device is inconvenient to detect, and a detection result is single and has errors. Comprising a shell arranged on a cable in a sleeving mode and a telescopic rod connected to the lower portion of the shell, a U-shaped groove is formed in the top of the shell, a plurality of walking units distributed along the inner wall of the shell in an equal circumference mode are arranged in the shell, and detection units are arranged on the two sides of each walking unit respectively; through the arrangement of the central positioning unit, when the shell moves on a detected line, it is guaranteed that the shell and the detected line are always coaxial, and the running stability of the shell on the detected line is guaranteed to the maximum extent; and three cleaning procedures are formed through the brush, the scraper and the felt plate, so that the neat appearance of the detected circuit is ensured, the detection unit can detect conveniently, and the detection result is prevented from being influenced by dirt attached to the detected circuit.

Description

Technical Field

[0001] The invention relates to the technical field of line fault locating equipment, and in particular to an overhead line fault locating device and a use method thereof. Background Art

[0002] The overall structure of the current distribution system is becoming increasingly complex, especially in urban areas and rural power grids, where the scale of overhead lines is still large and the number of branches in the distribution network is increasing. Accurately locating faults in overhead distribution lines is a key issue that needs to be urgently addressed in the operation and maintenance of distribution systems.

[0003] At present, there are many ways to find cable faults, including visual inspection, insulation resistance test, partial discharge test, high voltage test and thermal imaging test, etc. Among them, partial discharge test and high voltage test require the faulty cable to be disassembled, and the partial discharge situation at the fault location is found by partial discharge or high voltage charging of the cable. This method is not ideal for the detection of overhead cables, and the inspection time is relatively long.

[0004] In the Chinese utility model patent application No.: 202122447655.1, there is disclosed a low-voltage overhead line short-circuit fault troubleshooting device, which transmits information with the ground through an antenna, reduces manual inspection by personnel, and facilitates the troubleshooting of some long-distance overhead wires and line faults with a river on one side and determines the short-circuit location, effectively improving the troubleshooting efficiency, reducing the range of personnel's activities, and reducing the labor intensity of personnel. The movement of the main frame is driven by a rotary fan, and there is no need to move the line by rubbing the motor-driven wheel, which reduces the friction with the line during movement and reduces the friction loss of the line. When locating the fault on the overhead cable, this low-voltage overhead line short-circuit fault troubleshooting device not only cannot see the damage at the cable fault site, but also the overall equipment is prone to shaking under the interference of environmental factors, affecting its detection results.

[0005] In the Chinese utility model patent application No.: 202121560873.X, a transmission line fault point locking device is disclosed. When the shell moves on the wire, the two detection heads will contact at different positions on the wire. The data detected by the two detection heads are transmitted to the detector through the wire. When the data fluctuates greatly, the location where the damage occurs on the wire can be monitored. Under the influence of external environmental factors, the cable surface of this transmission line fault point locking device is prone to impurities or rainwater, which affects the detection results of the device.

[0006] However, the existing cable fault detectors and cable detection self-propelled vehicles still have the following problems:

[0007] 1. The existing self-propelled cable inspection vehicle is not in the same axis as the inspected line due to the low center of gravity of the equipment itself. It is easy to shake due to the interference of external environmental factors, thus affecting the inspection result of the inspected line. At the same time, impurities or rainwater are easily attached to the surface of the cable, which may cause deviations in the inspection result during insulation resistance testing.

[0008] 2. For the cable fault detector, the user needs to hold the detection host in one hand and hold the detection rod in the other hand to cover the cable for detection; during use, the user needs to repeatedly look up and down to observe the cable detection process. This method not only makes the user more tired, but also has a single detection method and cannot see the damage condition of the overhead cable.

[0009] 2. Existing self-propelled cable inspection vehicles often directly put the vehicle body on the cable to be inspected. When loading and unloading the self-propelled vehicle, it is still necessary to use a lifting vehicle, which is inconvenient to use. At the same time, under the influence of the external environment, impurities exist on the surface of the inspected line, which affects the inspection results of the cable. Summary of the invention

[0010] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an overhead line fault locating device and a method of using the same to solve the problems raised in the above background technology.

[0011] The technical solution is that the present invention comprises a housing sleeved on the cable, a telescopic rod connected below the housing, a U-shaped groove is provided on the top of the housing, a plurality of groups of walking units are arranged inside the housing and are distributed along the inner wall of the housing in a circle, and detection units are arranged on both sides of the walking units;

[0012] The walking unit includes a mounting platform located on the inner wall of the shell, the top of the mounting platform is rotatably connected to the first bevel gear, the upper part of the first bevel gear is coaxially provided with a connecting platform movable along the radial direction of the shell, the connecting platform is rotatably connected to two transmission wheels, the first bevel gear is spring-connected to the connecting platform, one side of the two transmission wheels is fixed with a second bevel gear, a movable rod is provided between the two transmission wheels, the top end of the movable rod is coaxially fixed with a third bevel gear, the two second bevel gears are meshed with the third bevel gear, and the movable rod is slidably connected to the mounting platform and the shell;

[0013] The detection unit includes a mounting ring located on the inner wall of the shell, a plurality of miniature cameras are fixed to the inner side of the mounting ring, a plurality of probe storage tubes penetrating the shell are fixed to the mounting ring, and insulation resistance detection needles are slidably connected to the interiors of the plurality of probe storage tubes, respectively, and the insulation resistance detection needles are connected to the probe storage tubes via springs.

[0014] Preferably, a center positioning unit is respectively provided on both sides of the multiple groups of walking units, and the center positioning unit includes three groups of positioning arms that rotate in equal circles on the inner wall of the shell, and the ends of the three groups of positioning arms away from the shell are rotatably connected to the support plate, the three positioning arms are connected to the side surfaces of the corresponding support plates through springs, and the side surfaces of the support plates close to the axis of the shell are provided with multiple balls, and the ends of the three groups of positioning arms close to the shell are provided with rotation grooves, and the insides of the three rotation grooves are fixed with transmission gears, an arc-shaped gear ring is rotatably provided on the inner wall of the shell, and the three transmission gears are meshed with the arc-shaped gear rings, a transmission rod is fixed on the inner wall of the shell, and connecting gears are coaxially fixed on both ends of the transmission rod, and the two connecting gears are meshed with the arc-shaped gear rings, and a servo motor placed inside the shell is fixed at one end of the transmission rod.

[0015] Preferably, a rectangular mounting plate is provided at the bottom of the shell, and mounting holes are respectively provided at both ends of the rectangular mounting plate, a mounting plate is fixed at the top of the telescopic rod, a sleeve is provided at the top of the mounting plate, a control line is sleeved inside the sleeve, one end of the control line is connected to a detection host, mounting cylinders are respectively fixed at both ends of the mounting plate, the two mounting cylinders are plugged into the inside of the mounting holes, horn guide ports are coaxially fixed below the two mounting holes, conical blocks are slidably connected to the inside of the two mounting cylinders, oil pipelines are provided at the bottom of the two conical blocks, oil passages that are interconnected are provided inside the mounting plate, a lifting piston is slidably connected to the inside of the oil storage cylinder, a threaded rod that penetrates the oil storage cylinder is rotatably connected to the bottom of the lifting piston, the threaded rod is threadedly connected to the oil storage cylinder, and a handle is fixed at the end of the threaded rod away from the lifting piston;

[0016] The conical block is slidably connected to the oil pipeline, a plurality of limit frames are respectively fixed on the outer surfaces of the two conical blocks, the interiors of the plurality of limit frames are slidably connected to the limit blocks, and the two mounting tubes are each provided with a first limit hole matching the limit block.

[0017] Preferably, a fourth bevel gear is meshed on multiple first bevel gears, a connecting rod is fixed to a side of multiple fourth bevel gears away from the first bevel gear, and the multiple connecting rods are connected by a transmission belt structure, a steering box is fixed to the end of one of the connecting rods away from the fourth bevel gear, and a transmission motor is fixed to the input end of the steering box, a steering bevel gear coaxial with the fourth bevel gear is meshed on one side of one of the first bevel gears, a transmission shaft is coaxially fixed to an end of the steering box away from the fourth bevel gear and a side of the steering bevel gear away from the first bevel gear, and ends of the two transmission shafts away from the steering bevel gear and the first bevel gear respectively pass through the shell.

[0018] Preferably, the two ends of the shell are rotatably connected with cleaning units, the cleaning unit comprises an arc-shaped cylinder coaxially rotating at the two ends of the shell, a slide is provided in the middle of the arc-shaped cylinder, an arc-shaped cavity is provided inside the arc-shaped cylinder and the slide, and a transmission gear ring is fixed on the outer wall of the arc-shaped cylinder;

[0019] The interior of the arc-shaped cylinder is respectively provided with a plurality of scrapers and felt plates distributed along the axial direction of the shell, one end of each of the plurality of scrapers and felt plates is fixed with a first sliding rod sliding on the arc-shaped cylinder, one end of each of the plurality of first sliding rods is fixed with a first spring platform, the first spring platform is connected to the arc-shaped cylinder through a spring, a plurality of brushes are arranged in the middle of the arc-shaped cylinder, a second sliding rod penetrating the arc-shaped cylinder and the sliding platform is fixed on one side of each of the plurality of brushes, and one side of each of the plurality of brushes is connected to the arc-shaped cavity spring.

[0020] Preferably, an exhaust unit located inside the shell is provided on one side of the two cleaning units, and the exhaust unit includes a support platform located on the inner wall of the shell, and air cylinders are fixed on both sides of the top of the support platform, and air inlets are opened on the two air cylinders, and air guide cylinders are fixed on the tops of the two air cylinders, and fans are respectively provided inside the two air cylinders, and conduction rods are fixed at the bottoms of the two fans, and guide bevel gears are fixed at the ends of the two conduction rods away from the fans, and connecting shafts are respectively provided on both sides of the bottom of the support platform, and the two connecting shafts are respectively connected to the transmission shaft through a belt transmission structure, and passive bevel gears are respectively fixed on one side of the two conduction pulleys, and the two passive bevel gears are meshed with the guide bevel gears.

[0021] Preferably, arc-shaped grooves are respectively provided on both side walls of the shell, and arc-shaped doors are slidably arranged inside the two arc-shaped grooves, and the two arc-shaped doors are spring-connected to the inner wall springs of the arc-shaped grooves, and arc-shaped oil pipes are respectively fixed to the four corners of the shell, and transverse oil pipes are respectively arranged at both ends of the shell, and one end of the four arc-shaped oil pipes is respectively through-connected to the two ends of the transverse oil pipes, and arc-shaped piston plates are respectively arranged inside the two transverse oil pipes, and connecting columns are respectively fixed to the bottoms of the two arc-shaped piston plates, and the connecting columns pass through the shell to the inside of the mounting hole, and sliding pistons are respectively slid inside the four arc-shaped oil pipes, and connecting ropes are respectively fixed to one end of the four sliding pistons, and the other ends of the four connecting ropes are respectively fixedly connected to the corresponding arc-shaped doors.

[0022] Preferably, connecting components are respectively provided on the two end surfaces of the shell, and the connecting components include two symmetrical first fixed columns rotated on one end surface of the shell, and transmission gears are respectively fixed on the two first fixed columns, and the two transmission gears are respectively meshed with transmission gear rings, and second fixed columns are respectively fixed on one side of the two transmission gear rings, and the first fixed column and the second fixed column are connected by a belt transmission structure, and the transmission shaft and the second fixed column are connected by a belt transmission structure.

[0023] A method for using an overhead line fault locating device comprises the following steps:

[0024] Step 1: Installation of the housing: hold the telescopic rod and make the housing parallel to the cable, control the telescopic rod to extend upward, and place the cable inside the housing through the U-shaped groove;

[0025] Step 2: Coaxial positioning of the shell, by detecting the host to control the servo motor to rotate, at this time the central positioning units on both sides of the walking unit synchronously clamp the cable so that the cable and the shell remain coaxial;

[0026] Step 3: Remove the telescopic rod. Rotate the handle and remove the telescopic rod. The curved door is now in a closed state.

[0027] Step 4: Start the walking unit, and control the transmission motor to operate by detecting the host, so that the housing moves on the cable;

[0028] Step 5: Locate the cable fault point and view the data fed back by the detection unit through the detection host, including image information and insulation resistance detection information;

[0029] Step 6: Install the telescopic rod. Hold the telescopic rod and insert the installation tube into the installation hole under the guidance and limiting action of the control line. Rotate the handle to remove the shell.

[0030] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0031] 1. Through the setting of the walking unit, when the detected cable enters the shell through the U-shaped groove, the shell is moved on the cable under the drive of multiple sets of transmission wheels. At the same time, considering that the detected cables have different diameters, the connecting platform and the transmission wheels are radially moved on the shell.

[0032] 2. Through the settings of the probe storage tube, insulation resistance detection needle and micro camera, when the shell is detecting the cable, the user can observe the surface of the cable in real time through the image feedback from the micro camera. It can not only realize the real-time measurement of the insulation resistance detection on the cable, but also can be used according to the diameter of the detected cable, thereby improving the versatility of the detection unit.

[0033] 3. Through the setting of the center positioning unit, when the shell moves on the detected line, it is ensured that the shell and the detected line are always coaxial, and the stability of the shell on the detection line is guaranteed to the maximum extent.

[0034] 4. Through the settings of the handle, the oil storage cylinder and the lifting piston, when the mounting cylinder is inserted into the mounting hole, the handle only needs to be rotated to drive the lifting piston to rise and fall inside the oil storage cylinder, so that the telescopic rod and the shell can be quickly loaded and unloaded. At the same time, when the mounting cylinder is inserted into the mounting hole, the connecting column moves upward under the support of the mounting cylinder, so that the opening and closing of the arc door is coordinated with the loading and unloading of the telescopic rod, which can not only ensure that the arc door improves the overall sealing of the shell, but also prevent external impurities from entering the shell through the U-shaped groove.

[0035] 5. A three-step cleaning process is formed by using a brush, a scraper and a felt board. The scraper is mainly responsible for removing larger and harder dirt, the brush is mainly used to clean the dirt that the scraper cannot remove completely, and the final felt board is used to absorb moisture on the cable line to ensure that the appearance of the detected line is neat, which is convenient for the detection unit to detect and avoid the dirt attached to the detected line affecting the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0037] Figure 2 It is a structural schematic diagram of the walking unit in the present invention.

[0038] Figure 3 It is a structural schematic diagram of the detection unit in the present invention.

[0039] Figure 4 It is a structural schematic diagram of the center positioning unit in the present invention.

[0040] Figure 5 It is a cross-sectional view of the present invention.

[0041] Figure 6 The present invention Figure 5 A schematic diagram of the enlarged structure at point A in the middle.

[0042] Figure 7 It is a structural schematic diagram of the telescopic rod in the present invention.

[0043] Figure 8 It is a structural schematic diagram of the installation cylinder in the present invention.

[0044] Fig. 9 The present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle.

[0045] Fig.10 The present invention Figure 6Enlarged schematic diagram of the structure at C in the middle.

[0046] Fig.11 It is a structural schematic diagram of the cleaning unit in the present invention.

[0047] Fig.12 It is a structural schematic diagram of the exhaust unit in the present invention.

[0048] Fig.13 It is a cross-sectional view of the arc groove in the present invention.

[0049] Fig.14 The present invention Figure 1 Enlarged schematic diagram of the structure at D in the middle.

[0050] Explanation of the symbols in the schematic diagram:

[0051] 10. Shell; 101. Arc groove; 102. First fixed column; 103. Transmission gear; 104. Second fixed column; 11. Rectangular mounting plate; 111. Horn guide port; 12. Arc oil pipe; 121. Sliding piston; 122. Connecting rope; 13. Arc door; 14. Horizontal oil pipe; 141. Arc piston plate; 142. Connecting column; 20. Telescopic rod; 201. Oil pipeline; 21. Mounting plate; 22. Casing; 2 3. Oil storage cylinder; 231. Threaded rod; 232. Lifting piston; 233. Handle; 24. Mounting cylinder; 25. Conical block; 251. Limit block; 252. Limit frame; 30. Travel unit; 31. Transmission wheel; 311. Second bevel gear; 32. Connecting platform; 33. First bevel gear; 34. Movable rod; 341. Third bevel gear; 35. Steering box; 351. Transmission shaft; 36. Fourth bevel gear; 361. Connecting rod ; 37, transmission motor; 38, steering bevel gear; 39, mounting platform; 40, cleaning unit; 401, arc cavity; 41, arc cylinder; 42, slide; 43, scraper; 44, felt plate; 45, first slide bar; 46, first spring platform; 47, brush; 471, second slide bar; 48, transmission gear ring; 50, detection unit; 51, mounting ring; 52, probe storage tube; 53, micro camera; 54, insulation resistance detection Needle; 60, center positioning unit; 61, positioning arm; 611, transmission gear; 62, support plate; 621, ball; 63, arc gear ring; 64, connecting gear; 65, transmission rod; 66, servo motor; 70, detection host; 71, control line; 80, exhaust unit; 81, support platform; 82, air cylinder; 821, air inlet; 83, air guide cylinder; 84, connecting shaft; 85, guide bevel gear; 86, passive bevel gear. DETAILED DESCRIPTION

[0052] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0053] Depend on Figures 1 to 3 The present invention comprises a shell 10 sleeved on the cable, and a telescopic rod 20 connected below the shell 10. When in use, the user controls the telescopic rod 20 to move the shell 10 below the detected cable. A U-shaped groove is provided on the top of the shell 10. When the cable is detected, the cable enters the inside of the shell 10 through the U-shaped groove. It should be noted that the maximum diameter of the U-shaped groove is greater than the maximum diameter of the cable in the overhead line. The inside of the shell 10 is provided with a plurality of groups of walking units 30 distributed along the inner wall of the shell 10 in a circle. The movement of the shell 10 on the cable is achieved by the walking units 30. Detection units 50 are respectively provided on both sides of the walking unit 30. The fault location of the detected cable is performed by the detection units 50.

[0054] During use, due to the different diameters of the lines being tested, the existing fault locating devices are not convenient to adjust according to different diameters. The walking unit 30 includes a mounting platform 39 located on the inner wall of the shell 10, and the top of the mounting platform 39 is rotatably connected to a first bevel gear 33. A connecting platform 32 that moves radially along the shell 10 is coaxially arranged above the first bevel gear 33, and two transmission wheels 31 are rotatably connected to the connecting platform 32. It should be noted that the contact surface between the transmission wheel 31 and the cable is an arc surface, and the contact mode between the transmission wheel 31 and the cable is changed from line contact to surface contact, thereby increasing the friction between the transmission wheel 31 and the cable and ensuring the movement stability of the shell 10 on the cable; the first bevel gear 33 is spring-connected to the connecting platform 32, and a second bevel gear 311 is fixed to one side of the two transmission wheels 31, and a The movable rod 34 has a third bevel gear 341 coaxially fixed on the top of the movable rod 34. The two second bevel gears 311 are meshed with the third bevel gear 341. The movable rod 34 is slidably connected to the mounting platform 39 and the shell 10. It should be noted that the movable rod 34 is divided into a round rod portion and a polygonal portion. The round rod portion is connected to the connecting rod 361. In order to ensure that the movable rod 34 can pass through the connecting platform 32 to transmit the transmission wheel 31, the polygonal portion passes through the first bevel gear 33 and the shell 10. This is to ensure that the connecting platform 32 can slide radially on the shell 10 and can also rotate synchronously with the first bevel gear 33. Through the setting of the above-mentioned walking unit 30, when the detected cable enters the shell 10 through the U-shaped groove, the multiple sets of transmission wheels 31 respectively contact the outer side of the cable. Driven by the multiple sets of transmission wheels 31, the shell 10 moves on the cable.

[0055] Furthermore, the detection unit 50 includes a mounting ring 51 located on the inner wall of the shell 10, and a plurality of groups of miniature cameras 53 are fixed to the inner side surface of the mounting ring 51. Through the setting of the miniature cameras 53, when the shell 10 is detecting the cable, the user can observe the surface of the cable in real time through the picture feedback from the miniature cameras 53. At this time, it is necessary to control the movement speed of the shell 10 not to be too fast. A plurality of groups of probe storage tubes 52 that penetrate the shell 10 are fixed on the mounting ring 51, and the interiors of the plurality of probe storage tubes 52 are respectively slidably connected with insulation resistance detection needles 54. The insulation resistance detection needles 54 are connected to the probe storage tubes 52 by springs, which ensures that the insulation resistance detection needles 54 can adapt to the diameters of different detected circuits for detection, thereby improving the versatility of the detection unit 50.

[0056] refer to Figure 1 and Figure 4As shown, in use, due to the lower center of gravity of the overall equipment, there is a problem of misalignment between the shell 10 and the cable. A center positioning unit 60 is respectively provided on both sides of the multiple groups of walking units 30. The stability of the shell 10 during travel is maintained by the center positioning unit 60. The center positioning unit 60 includes three groups of positioning arms 61 rotating on the inner wall of the shell 10 in equal circles to ensure that the shell 10 is coaxial with the cable and achieve the effect of center positioning. The ends of the three groups of positioning arms 61 away from the shell 10 are all rotatably connected to the support plate 62. The three positioning arms 61 are connected to the support plate 62 at the ends of the three groups of positioning arms 61. The arm 61 is connected to the corresponding support plate 62 through a spring. A plurality of balls 621 are arranged on one side of the support plate 62 close to the axis of the shell 10. It should be noted that a pressure sensor is arranged inside the support plate 62. When the ball 621 contacts the cable line, the pressure sensor can detect the pressure value in real time. At the same time, the rolling direction of the ball 621 is only consistent with the axial direction of the detected line. When the shell 10 deflects, the ball 621 generates an opposite friction force to ensure the stable operation of the shell 10. The three groups of positioning arms 61 are opened at one end close to the shell 10. There is a rotation groove, and a transmission gear 611 is fixed inside the three rotation grooves. An arc-shaped toothed ring 63 is rotated on the inner wall of the housing 10. The three transmission gears 611 are all engaged with the arc-shaped toothed ring 63. In use, in order to avoid the arc-shaped toothed ring 63 from rotating too much and blocking the U-shaped groove, it is necessary to limit the maximum rotation angle of the arc-shaped toothed ring 63. For example, when the arc-shaped toothed ring 63 rotates nearly 30 degrees, the positioning arm 61 has reached the maximum rotation position. A transmission rod 65 is fixed on the inner wall of the housing 10, and both ends of the transmission rod 65 are coaxial A connecting gear 64 is fixed, and both of the connecting gears 64 are meshed with the arc-shaped gear ring 63. A servo motor 66 placed inside the shell 10 is fixed to one end of the transmission rod 65. When the pressure sensor reaches a certain value, the servo motor 66 stops running and self-locks. Through the setting of the servo motor 66, the transmission rod 65 and the connecting gear 64, it is ensured that the central positioning units 60 on both sides of the walking unit 30 clamp the cable synchronously, thereby achieving a better stabilization effect to prevent the shell 10 from swinging uncontrollably due to natural factors at high altitudes.

[0057] refer to Figures 4 to 9As shown, in use, after the telescopic rod 20 is separated from the housing 10, in order to facilitate re-installation, the telescopic rod 20 can be quickly connected to the housing 10, and a rectangular mounting plate 11 is provided at the bottom of the housing 10, and mounting holes are respectively opened at both ends of the rectangular mounting plate 11. A mounting plate 21 is fixed to the top of the telescopic rod 20, and a sleeve 22 is provided at the top of the mounting plate 21. A control line 71 is sleeved inside the sleeve 22. The cooperation between the sleeve 22 and the control line 71 can play a role of pre-positioning, so that the user can observe the corresponding position between the telescopic rod 20 and the housing 10 with the naked eye. One end of the control line 71 is connected to a detection host 70, and the detection host The machine 70 is electrically connected to the detection unit 50 through the control line 71. The data fed back by the micro camera 53 and the insulation resistance detection needle 54 can be seen through the detection host 70. The detection host 70, the servo motor 66 and the pressure sensor are electrically connected. The two ends of the mounting plate 21 are respectively fixed with mounting cylinders 24, and the two mounting cylinders 24 are inserted into the inside of the mounting holes. The lower part of the two mounting holes is coaxially fixed with a horn guide port 111. After the pre-positioning of the above-mentioned sleeve 22 and the control line 71, there is still a certain installation difficulty due to the height problem during installation. At this time, the horn guide port 111 can better guide the mounting cylinder 24 to be inserted into the inside of the mounting cylinder 24, reducing To reduce the difficulty of installation and improve the installation efficiency, the interiors of the two installation cylinders 24 are connected with conical blocks 25 for sliding up and down connection, and the bottoms of the two conical blocks 25 are provided with oil pipelines 201, and the conical blocks 25 are connected with the oil pipelines 201 for sliding connection. It should be noted that after the conical blocks 25 reach the maximum sliding height, they contact the top of the inner wall of the installation cylinder 24, and at this time, the conical blocks 25 and the oil pipeline 201 are not separated. At the same time, in order to avoid better cooperation between the conical blocks 25 and the oil pipeline 201, it is also necessary to ensure the sealing of the connection between the conical blocks 25 and the oil pipeline 201, the interiors of the installation plate 21, the telescopic rod 20, the oil pipeline 201 and the conical blocks 25 are all provided with mutually penetrating Oil circuit, an oil storage cylinder 23 is fixed at the bottom of the telescopic rod 20, and a lifting piston 232 is slidably connected inside the oil storage cylinder 23, and a threaded rod 231 that penetrates the oil storage cylinder 23 is rotatably connected at the bottom of the lifting piston 232, and the threaded rod 231 is threadedly connected to the oil storage cylinder 23, and a handle 233 is fixed at one end of the threaded rod 231 away from the lifting piston 232. Through the above-mentioned handle 233, oil storage cylinder 23 and lifting piston 232, when the mounting tube 24 is inserted into the mounting hole, the user rotates the handle 233, and the lifting piston 232 inside the oil storage cylinder 23 rises, so that the hydraulic oil inside the oil storage cylinder 23 pushes the conical block 25 to slide upward;

[0058] Furthermore, a plurality of limit frames 252 are respectively fixed on the outer surfaces of the two conical blocks 25, and the interiors of the limit frames 252 are slidably connected to the limit blocks 251. The two mounting tubes 24 are each provided with a first limit hole matching the limit blocks 251. Through the settings of the limit frames 252, the limit blocks 251 and the first limit holes, when the above-mentioned conical block 25 slides upward under the push of the hydraulic oil, the limit blocks 251 slide inside the limit frames 252 accordingly. Since the limit blocks 251 are arranged on the conical surface of the conical block 25, the limit blocks 251 will extend outward while sliding inside the limit frames 252. When the conical block 25 reaches the maximum limit, the limit blocks 251 also produce a limit with the rectangular mounting plate 11.

[0059] refer to Figure 6 and Fig.10 As shown, a plurality of first bevel gears 33 are meshed with fourth bevel gears 36, and a plurality of fourth bevel gears 36 are fixed with connecting rods 361 on one side away from the first bevel gear 33, and a plurality of connecting rods 361 are connected to each other through a transmission belt structure, and a steering box 35 is fixed to one end of one of the connecting rods 361 away from the fourth bevel gear 36, and a transmission motor 37 is fixed to the input end of the steering box 35, and the transmission motor 37 is electrically connected to the detection host 70. Through the above-mentioned fourth bevel gear 36 and connecting rods 361 and other arrangements, when the transmission motor 37 drives one of the connecting rods 361 to rotate via the steering box 35, the plurality of connecting rods 361 drive the plurality of transmission wheels 31 to rotate synchronously under the drive of the belt transmission structure, so that The purpose of the arrangement is to ensure the continuity of the movement of the shell 10. If only one set of transmission wheels 31 drives the shell 10 to move, there is a slippage between the transmission wheels 31 and the cable, causing the shell 10 to stay somewhere on the cable. When multiple sets of transmission wheels 31 are transmitted at the same time, such a situation can be avoided to the greatest extent. One side of one of the first bevel gears 33 is meshed with a steering bevel gear 38 coaxial with the fourth bevel gear 36, and the end of the steering box 35 away from the fourth bevel gear 36 and the side of the steering bevel gear 38 away from the first bevel gear 33 are coaxially fixed with a transmission shaft 351, and the ends of the two transmission shafts 351 away from the steering bevel gear 38 and the first bevel gear 33 respectively pass through the shell 10.

[0060] refer to Fig.11As shown, during use, there are impurities on the surface of the cable in the external environment, which affects the detection result of the detection unit 50. The two ends of the shell 10 are respectively rotatably connected with cleaning units 40. The cleaning unit 40 is mainly used to clean the impurities attached to the surface of the cable when the shell 10 moves on the cable to avoid affecting the detection result of the cable. The cleaning unit 40 includes an arc cylinder 41 coaxially rotating at both ends of the shell 10, and a slide 42 is provided in the middle of the arc cylinder 41. The slide 42 is for facilitating the arc cylinder 41 to slide at both ends of the shell 10. The arc cylinder 41 and the slide 42 are both provided with an arc cavity 401, and a transmission gear ring 48 is fixed on the outer wall of the arc cylinder 41;

[0061] Furthermore, the interior of the arc tube 41 is respectively provided with a plurality of groups of scrapers 43 and felt plates 44 distributed along the axial direction of the shell 10, one end of each of the plurality of groups of scrapers 43 and felt plates 44 is fixed with a first slide bar 45 sliding on the arc tube 41, one end of each of the plurality of first slide bars 45 is fixed with a first spring platform 46, and the first spring platform 46 is connected to the arc tube 41 through a spring. Through the arrangement of the scrapers 43, felt plates 44 and first slide bars 45, when the shell 10 moves on the cable, the scrapers 43 at the outermost edge of the cleaning unit 40 clean the dirt on the cable under the support of the spring, so that the user can observe the damage of the cable through the micro camera 53. At the same time, the felt plate 44 serves to absorb the moisture on the cable. , to avoid affecting the detection result of the subsequent insulation resistance detection needle 54, a plurality of groups of brushes 47 are arranged in the middle of the arc tube 41, and a second slide rod 471 penetrating the arc tube 41 and the slide 42 is fixed on one side of the plurality of groups of brushes 47, and a side of the plurality of groups of brushes 47 is connected with the arc cavity 401 spring. Through the arrangement of the brushes 47, three cleaning procedures are formed in cooperation with the scraper 43 and the felt plate 44. The scraper 43 is mainly responsible for larger and harder dirt, and the brush 47 is mainly used to clean the dirt that is not completely removed by the scraper 43. The last felt plate 44 is used to absorb moisture on the cable line. At the same time, the cleaning unit 40 is arranged at both ends of the shell 10 to ensure that the shell 10 can clean the cable surface in both forward and reverse movements.

[0062] refer to Fig.12As shown, since the dust generated by the cleaning unit 40 will enter the interior of the shell 10 and affect the detection unit 50, an exhaust unit 80 located inside the shell 10 is provided on one side of the two cleaning units 40 to prevent the dust generated by the cleaning unit 40 from entering the interior of the shell 10. The exhaust unit 80 includes a support platform 81 located on the inner wall of the shell 10, and air cylinders 82 are fixed on both sides of the top of the support platform 81. Air inlets 821 are provided on the two air cylinders 82, and air guide cylinders 83 are fixed on the tops of the two air cylinders 82. It should be noted that the air outlet direction of the air guide cylinder 83 faces the gap formed between the cleaning unit 40 and the cable line to ensure that the dust generated by the cleaning unit 40 does not enter Inside the shell 10, fans are respectively arranged inside the two wind tubes 82, and conduction rods are fixed at the bottom of the two fans. Guide bevel gears 85 are fixed on the ends of the two conduction rods away from the fans. Connecting shafts 84 are respectively arranged on both sides of the bottom of the support platform 81. The two connecting shafts 84 are respectively connected to the transmission shaft 351 through a belt transmission structure, and passive bevel gears 86 are respectively fixed on one side of the two conduction pulleys. The two passive bevel gears 86 are meshed with the guide bevel gear 85. Through the above-mentioned fan, wind tube 82 and air guide tube 83, when the transmission motor 37 is started, the transmission shaft 351 transmits power to the fan via the belt transmission structure to ensure that dust does not enter the inside of the shell 10.

[0063] refer to Fig.13As shown, during use, due to the influence of external environmental factors, external dust or impurities will enter the interior of the shell 10 through the U-shaped groove, affecting the transmission structure inside the shell 10. The two side walls of the shell 10 are respectively provided with arc-shaped grooves 101, and arc-shaped doors 13 are respectively slid inside the two arc-shaped grooves 101 to close the U-shaped grooves. The two arc-shaped doors 13 are connected to the inner wall springs of the arc-shaped grooves 101. Arc-shaped oil pipes 12 are fixed to the four corners of the shell 10, and transverse oil pipes 14 are respectively provided at both ends of the shell 10. One end of the four arc-shaped oil pipes 12 is respectively connected to the two ends of the transverse oil pipe 14, and the interiors of the two transverse oil pipes 14 are respectively provided with arc-shaped piston plates 141. The bottoms of the two arc-shaped piston plates 141 are respectively fixed with connecting columns 142. The connecting columns 142 penetrate the shell 10 to the interior of the mounting hole. The interiors of the four arc-shaped oil pipes 12 are respectively There are sliding pistons 121 that slide separately, and one end of the four sliding pistons 121 is respectively fixed with a connecting rope 122, and the other ends of the four connecting ropes 122 are respectively fixedly connected to the corresponding arc-shaped doors 13. Through the above-mentioned arc-shaped groove 101, arc-shaped door 13 and arc-shaped oil pipe 12 and other arrangements, when the mounting cylinder 24 is inserted into the interior of the mounting hole, the connecting column 142 moves upward under the support of the mounting cylinder 24, and the arc-shaped piston plates 141 in the two horizontal oil pipes 14 both move upward, so that the hydraulic oil drives the four sliding pistons 121 to move upward, and the sliding piston 121 drives the arc-shaped door 13 to move into the arc-shaped groove 101 via the connecting rope 122. At this time, the arc-shaped door 13 is in an open state. When the mounting cylinder 24 is separated from the mounting hole, the four sliding pistons 121 are no longer subjected to the upward pressure of the hydraulic oil. At this time, the spring inside the arc-shaped groove 101 pushes the arc-shaped door 13 to reset upward, so that the arc-shaped door 13 closes the U-shaped groove.

[0064] refer to Fig.14 As shown, connecting components are respectively provided at both end surfaces of the shell 10, and the connecting components include two symmetrical first fixed columns 102 rotating on one end surface of the shell 10, and transmission gears 103 are respectively fixed on the two first fixed columns 102, and the two transmission gears 103 are respectively meshed with the transmission gear ring 48, and one side of the two transmission gear rings 48 is respectively fixed with a second fixed column 104, and the first fixed column 102 and the second fixed column 104 are connected by a belt transmission structure, and the transmission shaft 351 and the second fixed column 104 are connected by a belt transmission structure. Through the above-mentioned first fixed column 102, transmission gear ring 48 and transmission gear 103, the cleaning unit 40 can rotate synchronously following the movement of the shell 10.

[0065] When the present invention is used:

[0066] First, before the user conducts cable line inspection, he holds the telescopic rod 20 and moves the housing 10 to the specified height of the cable line to be inspected, aligns the cable line with the U-shaped groove and inserts it into the U-shaped groove. When the cable line is located at the axis of the housing 10, the multiple groups of walking units 30 are in contact with the cable line.

[0067] Then, the detection host 70 is used to observe the feedback of the micro camera 53. When the above-mentioned walking units 30 are in contact with the cable line, the detection host 70 controls the servo motor 66 to rotate, so that the center positioning units 60 on both sides of the walking unit 30 clamp the detected line, so as to ensure the walking stability of the housing 10 on the detected line. At this time, when the pressure sensor detects a certain pressure value, the servo motor 66 stops rotating and self-locks. At the same time, the handle 233 under the telescopic rod 20 is rotated to make the mounting tube 24 and the mounting hole disengage from the limit, and the telescopic rod 20 is retracted;

[0068] Secondly, the transmission motor 37 is controlled by the detection host 70 to operate, and the housing 10 moves stably on the detected circuit. During the movement, the user can accurately locate the fault point and damage of the detected circuit through the data fed back to the detection host 70 by the micro camera 53 and the insulation resistance detection needle 54;

[0069] Finally, after the fault point of the detected line is located, since the control line 71 is inside the sleeve 22, when the telescopic rod 20 is installed again, the cooperation between the sleeve 22 and the control line 71 can play a role of pre-positioning. At this time, the two installation cylinders 24 accurately enter the interior of the installation hole under the guidance of the two horn guide ports 111, and the handle 233 is rotated. The lifting piston 232 pushes the hydraulic oil in the oil storage cylinder 23 to move upward, so that the conical block 25 moves upward. At this time, the limit block 251 slides inside the limit frame 252. 251 is set on the conical surface of the conical block 25. The limit block 251 will extend outward when sliding inside the limit frame 252. When the conical block 25 reaches the maximum limit, the limit block 251 also limits the rectangular mounting plate 11. At the same time, the upper arc door 13 also moves toward the inside of the arc groove 101 under the action of the sliding piston 121 and the connecting rope 122. Finally, the servo motor 66 is controlled by the detection host 70 to reverse, and the limit of the center positioning unit 60 on the detected line is released. At this time, the telescopic rod 20 can be controlled to remove the entire device.

[0070] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An overhead line fault locating device, comprising a housing (10) sleeved on a cable, and a telescopic rod (20) connected below the housing (10), characterized in that: A U-shaped groove is provided on the top of the shell (10), and a plurality of groups of walking units (30) are arranged inside the shell (10) and are evenly distributed along the inner wall of the shell (10), and detection units (50) are respectively arranged on both sides of the walking units (30); The walking unit (30) comprises a mounting platform (39) located on the inner wall of the housing (10), the top of the mounting platform (39) is rotatably connected to a first bevel gear (33), a connecting platform (32) is coaxially arranged above the first bevel gear (33) and is movable along the radial direction of the housing (10), two transmission wheels (31) are rotatably connected to the connecting platform (32), the first bevel gear (33) is spring-connected to the connecting platform (32), a second bevel gear (311) is fixed to one side of the two transmission wheels (31), a movable rod (34) is arranged between the two transmission wheels (31), a third bevel gear (341) is coaxially fixed to the top of the movable rod (34), the two second bevel gears (311) are meshed with the third bevel gear (341), and the movable rod (34) is slidably connected to the mounting platform (39) and the housing (10); The detection unit (50) comprises a mounting ring (51) located on the inner wall of the shell (10), a plurality of groups of miniature cameras (53) are fixed on the inner side surface of the mounting ring (51), a plurality of groups of probe storage tubes (52) penetrating the shell (10) are fixed on the mounting ring (51), and the interiors of the plurality of groups of probe storage tubes (52) are respectively slidably connected with insulation resistance detection needles (54), and the insulation resistance detection needles (54) are connected to the probe storage tubes (52) via springs.

2. An overhead line fault locating device according to claim 1, characterized in that: A central positioning unit (60) is respectively arranged on both sides of the plurality of walking units (30), and the central positioning unit (60) comprises three groups of positioning arms (61) rotating in equal circles on the inner wall of the shell (10), and one end of the three groups of positioning arms (61) away from the shell (10) is rotatably connected to a support plate (62), and the three positioning arms (61) are connected to the corresponding support plates (62) through springs, and a plurality of balls (621) are arranged on one side of the support plate (62) close to the axis of the shell (10), and the three groups of positioning arms (61) close to the shell (10) are connected to the corresponding support plates (62) through springs. A rotating groove is opened at one end, and three transmission gears (611) are fixed inside the rotating grooves. An arc-shaped toothed ring (63) is rotatably arranged on the inner wall of the housing (10), and the three transmission gears (611) are meshed with the arc-shaped toothed ring (63). A transmission rod (65) is fixed on the inner wall of the housing (10), and connecting gears (64) are coaxially fixed at both ends of the transmission rod (65), and the two connecting gears (64) are meshed with the arc-shaped toothed ring (63). A servo motor (66) disposed inside the housing (10) is fixed at one end of the transmission rod (65).

3. An overhead line fault locating device according to claim 1, characterized in that: A rectangular mounting plate (11) is provided at the bottom of the shell (10), and mounting holes are respectively provided at both ends of the rectangular mounting plate (11). A mounting plate (21) is fixed at the top of the telescopic rod (20), and a sleeve (22) is provided at the top of the mounting plate (21). A control line (71) is sleeved inside the sleeve (22), and one end of the control line (71) is connected to a detection host (70). Mounting tubes (24) are respectively fixed at both ends of the mounting plate (21), and the two mounting tubes (24) are both inserted into the inside of the mounting holes. A speaker guide port (111) is coaxially fixed below the two mounting holes, and the insides of the two mounting tubes (24) are both slidably connected up and down. A conical block (25) is connected, and the bottoms of the two conical blocks (25) are both provided with oil delivery pipes (201). The insides of the mounting plate (21), the telescopic rod (20), the oil delivery pipes (201) and the conical blocks (25) are all provided with oil passages that are mutually interpenetrating. An oil storage cylinder (23) is fixed at the bottom of the telescopic rod (20), and a lifting piston (232) is slidably connected inside the oil storage cylinder (23). The bottom of the lifting piston (232) is rotatably connected with a threaded rod (231) that penetrates the oil storage cylinder (23), and the threaded rod (231) is threadedly connected to the oil storage cylinder (23), and a handle (233) is fixed at one end of the threaded rod (231) away from the lifting piston (232); The conical block (25) is slidably connected to the oil delivery pipe (201); a plurality of limit frames (252) are respectively fixed on the outer surfaces of the two conical blocks (25); the interiors of the limit frames (252) are slidably connected to the limit blocks (251); and the two mounting tubes (24) are each provided with a first limit hole matching the limit blocks (251).

4. An overhead line fault locating device according to claim 1, characterized in that: A fourth bevel gear (36) is meshed on a plurality of the first bevel gears (33); a connecting rod (361) is fixed on a side of the plurality of the fourth bevel gears (36) away from the first bevel gear (33); the plurality of connecting rods (361) are connected to each other via a transmission belt structure; an end of one of the connecting rods (361) away from the fourth bevel gear (36) is fixedly connected to a steering box (35); an input end of the steering box (35) is fixedly connected to a steering motor (37); a steering bevel gear (38) coaxial with the fourth bevel gear (36) is meshed on one side of one of the first bevel gears (33); a transmission shaft (351) is coaxially fixed on an end of the steering box (35) away from the fourth bevel gear (36) and a side of the steering bevel gear (38) away from the first bevel gear (33); and ends of the two transmission shafts (351) away from the steering bevel gear (38) and the first bevel gear (33) respectively penetrate the housing (10).

5. An overhead line fault locating device according to claim 1, characterized in that: The two ends of the shell (10) are rotatably connected to cleaning units (40), the cleaning unit (40) comprises an arc-shaped cylinder (41) coaxially rotatable at the two ends of the shell (10), a slide table (42) is arranged in the middle of the arc-shaped cylinder (41), an arc-shaped cavity (401) is provided inside the arc-shaped cylinder (41) and the slide table (42), and a transmission gear ring (48) is fixed on the outer wall of the arc-shaped cylinder (41); The arc-shaped cylinder (41) is provided with a plurality of groups of scrapers (43) and felt plates (44) distributed axially along the shell (10), one end of each of the plurality of groups of scrapers (43) and felt plates (44) is fixed with a first slide bar (45) sliding on the arc-shaped cylinder (41), one end of each of the plurality of first slide bars (45) is fixed with a first spring platform (46), the first spring platform (46) is connected to the arc-shaped cylinder (41) through a spring, a plurality of groups of brushes (47) are provided in the middle of the arc-shaped cylinder (41), a second slide bar (471) penetrating the arc-shaped cylinder (41) and the slide platform (42) is fixed to one side of each of the plurality of groups of brushes (47), and a plurality of groups of brushes (47) is connected to the arc-shaped cavity (401) through a spring.

6. An overhead line fault locating device according to claim 5, characterized in that: An exhaust unit (80) located inside the shell (10) is arranged on one side of the two cleaning units (40), and the exhaust unit (80) comprises a support platform (81) located on the inner wall of the shell (10), and air cylinders (82) are fixed on both sides of the top of the support platform (81), and air inlets (821) are opened on the two air cylinders (82), and air guide cylinders (83) are fixed on the tops of the two air cylinders (82), and fans are arranged inside the two air cylinders (82), and conduction rods are fixed at the bottoms of the two fans, and guide bevel gears (85) are fixed at the ends of the two conduction rods away from the fans, and connecting shafts (84) are arranged on both sides of the bottom of the support platform (81), and the two connecting shafts (84) are respectively connected to the transmission shaft (351) through a belt transmission structure, and passive bevel gears (86) are fixed on one side of the two conduction pulleys, and the two passive bevel gears (86) are meshed with the guide bevel gear (85).

7. An overhead line fault locating device according to claim 3, characterized in that: The two side walls of the shell (10) are respectively provided with arc-shaped grooves (101), and the insides of the two arc-shaped grooves (101) are both slidably provided with arc-shaped doors (13), and the two arc-shaped doors (13) are both connected to the inner wall springs of the arc-shaped grooves (101). The four corners of the shell (10) are respectively fixed with arc-shaped oil pipes (12), and the two ends of the shell (10) are respectively provided with transverse oil pipes (14), and one end of the four arc-shaped oil pipes (12) is respectively connected to the two ends of the transverse oil pipes (14), and the two transverse oil pipes (14) are respectively connected to the two ends of the transverse oil pipes (14). The inner parts of the four arc-shaped oil pipes (12) are provided with arc-shaped piston plates (141), the bottoms of the two arc-shaped piston plates (141) are respectively fixed with connecting columns (142), the connecting columns (142) penetrate the housing (10) to the inner part of the mounting hole, the inner parts of the four arc-shaped oil pipes (12) are respectively slid with sliding pistons (121), one ends of the four sliding pistons (121) are respectively fixed with connecting ropes (122), and the other ends of the four connecting ropes (122) are respectively fixedly connected to the corresponding arc-shaped doors (13).

8. An overhead line fault locating device according to claim 4, characterized in that: The two end surfaces of the shell (10) are respectively provided with connection components, and the connection components include two symmetrical first fixed columns (102) rotating on one end surface of the shell (10), and transmission gears (103) are respectively fixed on the two first fixed columns (102), and the two transmission gears (103) are respectively meshed with the transmission gear ring (48), and a second fixed column (104) is respectively fixed on one side of the two transmission gear rings (48), and the first fixed column (102) and the second fixed column (104) are connected via a belt transmission structure, and the transmission shaft (351) and the second fixed column (104) are connected via a belt transmission structure.

9. A method for using an overhead line fault locating device, characterized in that: Using the overhead line fault locating device described in claims 1-8 comprises the following steps: Step 1: installing the housing (10), holding the telescopic rod (20) and making the housing (10) parallel to the cable, controlling the telescopic rod (20) to extend upward, and placing the cable inside the housing (10) through the U-shaped groove; Step 2: Coaxial positioning of the housing (10), by controlling the servo motor (66) to rotate through the detection host (70), at which time the central positioning units (60) on both sides of the walking unit (30) synchronously clamp the cable so that the cable and the housing (10) remain coaxial; Step 3: Disassemble the telescopic rod (20), rotate the handle (233) and remove the telescopic rod (20), at which time the arc door (13) is in a closed state; Step 4: Start the walking unit (30), and control the transmission motor (37) to operate through the detection host (70), so that the housing (10) moves on the cable; Step 5: Locate the cable fault point, and view the data fed back by the detection unit (50) through the detection host (70), including image information and insulation resistance detection information; Step 6: Install the telescopic rod (20). Hold the telescopic rod (20) and insert the installation tube (24) into the installation hole under the guidance and limiting action of the control line (71). Rotate the handle (233) to remove the housing (10).

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