Electric power line fault positioning device based on electromagnetic induction principle

Abstract

The invention discloses an electric power circuit fault positioning device based on an electromagnetic induction principle, and relates to the technical field of electric power circuit fault detection.The electric power circuit fault positioning device comprises an electromagnetic induction detector installed between a front support and a rear support, a front clamping frame is installed on the front support in a swinging mode, and a rear clamping frame is installed on the rear support in a swinging mode; the front support and the front clamping frame are each provided with a plurality of walking assemblies. The device has the advantages that the device can move along a power line to complete overall detection, a to-be-detected area of the power line is automatically cleaned in the moving process, it is avoided that dust, bird droppings and other impurities exist on the to-be-detected area, the accuracy of the detection result is affected, in addition, when a fault signal is detected for the first time, the working mode of the device can be automatically switched, and the working efficiency is improved. And the device is kept static, and the electromagnetic induction detector performs slow reciprocating motion in a fault area, so that accurate positioning of a fault point is realized.

Description

Technical Field

[0001] The invention relates to the technical field of power line fault detection, and in particular to a power line fault locating device based on the electromagnetic induction principle. Background Art

[0002] Power lines are conductor loops used to transmit and distribute electrical energy and are an important part of the power supply system. In order to ensure the normal operation of electrical equipment, staff need to regularly troubleshoot power lines. For obvious line damage (such as exposed copper wires, burnt insulation, and broken wires), troubleshooting can be completed through visual observation. However, for problems such as leakage and short circuits that cannot be observed by the naked eye, detection devices are required to complete troubleshooting.

[0003] After searching, a patent document with publication number CN118091327B discloses a power line fault detection device, including two movable seats, and a plurality of linearly arranged fault detection modules are installed on the inner side of the two movable seats, each of the fault detection modules includes two symmetrically distributed electric telescopic rods, one end of the electric telescopic rod is fixed to the inner wall of the movable seat, and the other end of the electric telescopic rod is fixed with a C-shaped metal sheet, and the two C-shaped metal sheets are symmetrical to each other.

[0004] The above-mentioned power line fault detection device can move along the power line to complete the positioning detection of the fault point, but it still has the following shortcomings:

[0005] During the detection process, when a fault point is found along the moving path, the device is always in a moving state, so it is impossible to accurately locate the fault point. In addition, the device will cause the power line to shake during the movement, and the power line in motion will also have an adverse effect on the fault detection results. In addition, in outdoor environments, dust, bird droppings and other impurities will adhere to the power line. The presence of these impurities will also affect the accuracy of fault detection. Therefore, it is necessary to design a power line fault locating device based on the principle of electromagnetic induction. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a power line fault locating device based on the principle of electromagnetic induction, which solves the problems raised in the above background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A power line fault location device based on the electromagnetic induction principle comprises an electromagnetic induction detector installed between a front bracket and a rear bracket, a front clamping frame is swingably installed on the front bracket, a rear clamping frame is swingably installed on the rear bracket, a plurality of walking components are installed on the front bracket and the front clamping frame, a master control component matched with the plurality of walking components is installed between the front bracket and the front clamping frame, and the master control component is used to drive and process the plurality of walking components;

[0009] A cleaning component is installed between the front bracket and the front locking frame, and the cleaning component is used to clean the power line. A moving component that cooperates with the electromagnetic induction detector is installed between the front bracket and the rear bracket, and the moving component is used to move the electromagnetic induction detector between the front bracket and the rear bracket. A driving component is installed in the front bracket, and the driving component cooperates with the main control component, the cleaning component and the moving component. The driving component can only drive the moving component or the main control component and the cleaning component at the same time. The driving component is configured to perform only one of the following driving processes at the same time: a) driving the moving component; b) driving the main control component and the cleaning component at the same time; the driving process is controlled by the electromagnetic induction detector.

[0010] Furthermore, the front bracket and the rear bracket are both provided with swing grooves, and spring shafts are fixedly installed in the two swing grooves, the front clamping frame and the rear clamping frame are both fixedly installed with swing rods, and the two swing rods are respectively rotatably connected to the two spring shafts, a fixed rod that slides with the electromagnetic induction detector is fixedly installed between the front bracket and the rear bracket, and an arc-shaped guard plate is fixedly installed between the front clamping frame and the rear clamping frame.

[0011] Furthermore, the walking assembly consists of a groove, a protrusion, an installation groove, a rotating shaft, two driving wheels and two compression springs. The groove is opened on the inner wall of the front bracket, the protrusion is slidably connected in the groove, the two compression springs are installed between the groove and the protrusion, the installation groove is opened on the side wall of the protrusion at one end away from the compression spring, the rotating shaft is rotatably installed in the installation groove, the two driving wheels are fixedly installed on the rotating shaft, and the protrusion is installed with a transmission mechanism matching the rotating shaft.

[0012] Furthermore, the transmission mechanism is composed of a rotating rod, a driving bevel gear, a driven bevel gear, a connecting shaft, a slot, an insert rod and a helical gear. The rotating rod is rotatably mounted on the protrusion, the driving bevel gear is fixedly mounted on the rotating rod, the driven bevel gear is fixedly mounted on the rotating shaft, and the driven bevel gear is meshed with the driving bevel gear, the connecting shaft is rotatably mounted in the groove, the slot is opened on the connecting shaft, the insert rod is fixedly mounted on one end of the rotating rod away from the driving bevel gear, and the insert rod is slidably matched with the slot, and the helical gear is fixedly mounted on one end of the connecting shaft away from the rotating rod.

[0013] Furthermore, a plurality of grooves are provided on the inner walls of the rear bracket and the rear locking frame, and a protrusion is slidably installed in each groove through two compression springs, an installation groove is provided on the side wall of the protrusion, and a rotating shaft is rotatably installed in the installation groove, and a driven wheel is fixedly installed on the rotating shaft, two limit blocks are fixedly installed on the side wall of the protrusion, and two limit grooves matching the corresponding limit blocks are provided on the side wall of the groove.

[0014] Furthermore, the master control assembly is composed of two rotating grooves, two arc-shaped plates and two oblique gear rings. The two rotating grooves are respectively opened on the front bracket and the front clamping frame, and the two rotating grooves are spliced ​​into a complete circular ring shape. The two arc-shaped plates are rotatably installed in the two rotating grooves together, and the two oblique gear rings are respectively fixedly installed on the side walls of the two arc-shaped plates, and the two oblique gear rings are meshed with multiple helical gears together.

[0015] Furthermore, the cleaning assembly consists of two arc grooves, two arc frames and a plurality of cleaning rods. The two arc grooves are respectively opened on the front bracket and the front clamping frame, and the two arc grooves are spliced ​​into a complete circular ring shape. The two arc frames are rotatably installed in the two arc grooves together, and a plurality of cleaning rods are fixedly installed on the inner walls of the two arc frames.

[0016] Furthermore, the moving assembly consists of a reciprocating screw and a connecting gear. The reciprocating screw is rotatably installed between the front bracket and the rear bracket, and the reciprocating screw is threadedly matched with the electromagnetic induction detector. The connecting gear is fixedly installed on one end of the reciprocating screw located in the front bracket.

[0017] Further, the driving assembly is composed of a driving shaft, a first gear, a second gear, a servo motor, a driving rod, a small gear, a large gear and a fixed gear. The driving shaft is rotatably mounted in the front bracket, the first gear and the second gear are fixedly mounted at both ends of the driving shaft, and a first rack is fixedly mounted on the side wall of the arc plate, and the first rack is meshed with the first gear.

[0018] A second rack is fixedly mounted on the side wall of the arc frame, and the second rack is meshed with the second gear. The fixed gear is fixedly mounted on the driving shaft. The servo motor is fixedly mounted in the front bracket. The driving rod is fixedly mounted on the output end of the servo motor. The pinion is mounted on the driving rod, and the pinion matches the connecting gear. The large gear is fixedly mounted on the pinion, and the large gear matches the fixed gear.

[0019] Furthermore, the first gear, the second gear and the fixed gear are equal in size, the diameter of the first rack is larger than the diameter of the second rack, an electric push-pull rod is fixedly installed in the front bracket, and the output end of the electric push-pull rod is rotatably matched with the large gear, a telescopic slot is provided on the driving rod, and a telescopic rod is fixedly installed on the small gear and slidably matches with the telescopic slot.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1: Through the cooperation of multiple walking components, the device can be stably connected to the power line, and the device can be stably moved along the power line, thereby driving the electromagnetic induction detector on it to complete the fault location detection and processing of the entire power line.

[0022] 2: Through the cooperation of the driving component and the moving component, when the device detects a fault signal for the first time while moving along the power line, the connection between the driving component, the walking component and the moving component can be switched, so that the device remains stationary on the power line, and then the electromagnetic induction detector is moved back and forth slowly between the front bracket and the rear bracket, so that the fault point can be located and detected more accurately.

[0023] 3: Through the design of the cleaning component, the multiple cleaning rods can always keep rotating relative to the power line when the device moves along the power line. The rotation of the cleaning rods and the movement of the device itself can be used to clean the area to be inspected on the power line, thereby preventing dust, bird droppings and other impurities on the power line from affecting the accuracy of the detection results.

[0024] In summary, the present invention can be moved along the power line to complete the overall detection, and automatically clean the area to be detected of the power line during the movement to prevent impurities such as dust and bird droppings on it from affecting the accuracy of the detection results. In addition, when a fault signal is detected for the first time, the working mode of the device can be automatically switched to keep the device stationary and allow the electromagnetic induction detector to move back and forth slowly in the fault area to achieve accurate positioning of the fault point. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a power line fault location device based on the electromagnetic induction principle proposed by the present invention;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at the middle front bracket;

[0027] Figure 3 for Figure 2 Schematic diagram of the middle front bracket after being separated from the front clamping frame;

[0028] Figure 4 for Figure 3 The left side view of the structure at the middle front snap-in frame;

[0029] Figure 5 for Figure 4 Schematic diagram of the structure of the AA surface in the middle;

[0030] Figure 6 for Figure 5 Schematic diagram of the three-dimensional structure;

[0031] Figure 7 for Figure 6 An enlarged schematic diagram of the structure at one of the bumps from another perspective;

[0032] Figure 8 for Figure 7 Schematic diagram of structural decomposition;

[0033] Fig. 9 for Figure 1 An enlarged schematic diagram of the structure of one of the protrusions in the middle rear bracket;

[0034] Fig.10 for Figure 3 An exploded schematic diagram of the structure at the mid-front bracket from another perspective;

[0035] Fig.11 for Fig.10 An enlarged schematic diagram of the structure after removing the front bracket and multiple bumps;

[0036] Fig.12 for Fig.11 Schematic diagram of the exploded and enlarged structure of the servo motor.

[0037] In the figure: 1, front bracket; 2, rear bracket; 3, reciprocating screw; 4, electromagnetic induction detector; 5, front clamping frame; 6, rear clamping frame; 7, arc guard plate; 8, swing groove; 9, swing rod; 10, spring shaft; 11, groove; 12, bump; 13, compression spring; 14, limit block; 15, installation groove; 16, rotating shaft; 17, driving wheel; 18, driven wheel; 19, rotating rod; 20, driving bevel gear; 21, driven bevel gear; 22, connecting shaft; 23, slot; 2 4. Insert rod; 25. Bevel gear; 26. Rotating groove; 27. Arc plate; 28. Oblique gear ring; 29. ​​Arc groove; 30. Arc frame; 31. Cleaning rod; 32. Drive shaft; 33. First gear; 34. First rack; 35. Second gear; 36. Second rack; 37. Connecting gear; 38. Servo motor; 39. Drive rod; 40. Telescopic rod; 41. Small gear; 42. Large gear; 43. Fixed gear; 44. Electric push-pull rod; 45. Fixed rod. DETAILED DESCRIPTION

[0038] Reference Figure 1-Figure 12, a power line fault location device based on the principle of electromagnetic induction, including an electromagnetic induction detector 4 installed between a front bracket 1 and a rear bracket 2. The electromagnetic induction detector 4 adopts the existing technology, and the specific structure and working principle are not described here. It works based on the principle of electromagnetic induction. When a current passes through a conductor, a magnetic field is generated around it. If the current changes, the magnetic field will also change. The electromagnetic induction detector 4 uses this principle to infer the change of current by detecting the change of the magnetic field, so it can be used to detect and locate the fault point of the power line.

[0039] A front engaging frame 5 is swingably mounted on the front bracket 1, and a rear engaging frame 6 is swingably mounted on the rear bracket 2. A swinging groove 8 is provided on the front bracket 1 and the rear bracket 2, and spring shafts 10 are fixedly mounted in the two swinging grooves 8. Swinging rods 9 are fixedly mounted on the front engaging frame 5 and the rear engaging frame 6, and the two swinging rods 9 are rotatably connected with the two spring shafts 10 respectively. The spring shaft 10 is composed of an axle body and a torsion spring, the axle body is fixed in the swinging groove 8, the torsion spring is sleeved on the axle body, and the two ends of the torsion spring are respectively fixedly connected with the swinging groove 8 and the side walls of the swinging rod 9, a fixing rod 45 slidingly matched with the electromagnetic induction detector 4 is fixedly mounted between the front bracket 1 and the rear bracket 2, and an arc-shaped guard plate 7 is fixedly mounted between the front engaging frame 5 and the rear engaging frame 6. When fault location detection is performed on the power line, the front engaging frame 5 and the front bracket 1 are first unfolded, and then the two are sleeved on the power line to be detected, and then the front engaging frame 5 is released, and the elastic force of the spring shaft 10 is used to make the device in a Figure 1 In the state shown, the power circuit is located between the front bracket 1 and the front engaging frame 5, and the power circuit is also located between the rear bracket 2 and the rear engaging frame 6, that is, the power circuit is coaxial with the front bracket 1 and the rear bracket 2.

[0040] A plurality of walking components are installed on the front bracket 1 and the front engaging frame 5, and the walking components are composed of a groove 11, a protrusion 12, a mounting groove 15, a rotating shaft 16, two driving wheels 17 and two compression springs 13. The groove 11 is arranged on the inner wall of the front bracket 1, and the protrusion 12 is slidably connected in the groove 11. The two compression springs 13 are both installed between the groove 11 and the protrusion 12. The mounting groove 15 is arranged on the side wall of the end of the protrusion 12 away from the compression spring 13. The rotating shaft 16 is rotatably installed in the mounting groove 15, and the two driving wheels 17 are both fixedly installed on the rotating shaft 16. Through the elastic force of the compression spring 13, after the installation between the device and the power line is completed, multiple protrusions 12 can be allowed to approach the power line at the same time to complete the clamping and positioning thereof, thereby ensuring the connection stability between the device and the power line, and keeping the power line coaxial with the device.

[0041] The projection 12 is provided with a transmission mechanism matched with the rotating shaft 16, and the transmission mechanism is composed of a rotating rod 19, an active bevel gear 20, a driven bevel gear 21, a connecting shaft 22, a slot 23, an insert rod 24 and a helical gear 25. The rotating rod 19 is rotatably mounted on the projection 12, the active bevel gear 20 is fixedly mounted on the rotating rod 19, the driven bevel gear 21 is fixedly mounted on the rotating shaft 16, and the driven bevel gear 21 is meshed with the active bevel gear 20, the connecting shaft 22 is rotatably mounted in the groove 11, the slot 23 is provided on the connecting shaft 22, the insert rod 24 is fixedly mounted on one end of the rotating rod 19 away from the active bevel gear 20, and the insert rod 24 is slidably matched with the slot 23, and the helical gear 25 is fixedly mounted on the connecting shaft 22. The shaft 22 is away from one end of the rotating rod 19, and the insertion rod 24 and the slot 23 are both square in shape, and the length of the insertion rod 24 is greater than the depth of the groove 11. Through the cooperation between the insertion rod 24 and the slot 23, when the protrusion 12 moves in the groove 11, the transmission effect between the rotating rod 19 and the connecting shaft 22 can be effectively ensured. Therefore, no matter where the protrusion 12 is in the groove 11, the rotation of the connecting shaft 22 can drive the rotating rod 19 to rotate, and then through the cooperation of the active bevel gear 20 and the driven bevel gear 21, the rotating shaft 16 drives the active wheel 17 to rotate, so that the device moves on the power line, so that the electromagnetic induction detector 4 can complete the fault location detection of the entire power line.

[0042] A plurality of grooves 11 are also provided on the inner walls of the rear bracket 2 and the rear engaging frame 6, and a protrusion 12 is slidably installed in each groove 11 through two compression springs 13, a mounting groove 15 is also provided on the side wall of the protrusion 12, and a rotating shaft 16 is rotatably installed in the mounting groove 15, and a driven wheel 18 is fixedly installed on the rotating shaft 16, two limit blocks 14 are fixedly installed on the side wall of the protrusion 12, and two limit grooves matching the corresponding limit blocks 14 are provided on the side wall of the groove 11. The design of multiple protrusions 12 on the rear bracket 2 and the rear engaging frame 6 can further improve the installation stability of the device on the power line. At the same time, the design of the driven wheel 18 can reduce the movement resistance of the device on the power line, making it move more smoothly.

[0043] A master control assembly matched with a plurality of traveling assemblies is installed between the front bracket 1 and the front engaging frame 5. The master control assembly is used to drive the plurality of traveling assemblies. The master control assembly is composed of two rotating grooves 26, two arc plates 27 and two oblique gear rings 28. The two rotating grooves 26 are respectively provided on the front bracket 1 and the front engaging frame 5, and the two rotating grooves 26 are spliced ​​into a complete circular ring shape. The two arc plates 27 are rotatably installed in the two rotating grooves 26 together. The two oblique gear rings 28 are respectively fixedly installed on the side walls of the two arc plates 27, and the two oblique gear rings 28 are meshed with the plurality of helical gears 25 together. When the device is in Figure 1In the state shown, the two arc plates 27 are spliced ​​together to form a complete circular ring. At this time, the rotation of the two arc plates 27 can drive multiple bevel gears 25 to rotate simultaneously through two oblique gear rings 28, thereby causing multiple driving wheels 17 to rotate simultaneously, driving the movement of the device on the power line.

[0044] A cleaning assembly is installed between the front bracket 1 and the front clamping frame 5. The cleaning assembly is used to clean the power line. The cleaning assembly consists of two arc grooves 29, two arc frames 30 and a plurality of cleaning rods 31. The two arc grooves 29 are respectively opened on the front bracket 1 and the front clamping frame 5, and the two arc grooves 29 are spliced ​​into a complete ring shape. The two arc frames 30 are rotatably installed in the two arc grooves 29, and a plurality of cleaning rods 31 are fixedly installed on the inner walls of the two arc frames 30. After the two arc frames 30 are closed and installed, they also form a complete circle. At this time, the rotation of the two arc frames 30 can drive multiple cleaning rods 31 to rotate, making them move in a circular motion relative to the power line. In conjunction with the movement of the device, the surface of the power line is cleaned in advance during the detection process to remove dust, bird droppings and other impurities thereon, thereby improving the accuracy of subsequent detection results. In order to ensure the normal expansion and closure of the device, before and after use, the two arc plates 27 and the two arc frames 30 can be driven to rotate by starting the servo motor 38 so that they are respectively located in the corresponding rotation grooves 26 and arc grooves 29.

[0045] A moving assembly matched with the electromagnetic induction detector 4 is installed between the front bracket 1 and the rear bracket 2. The moving assembly is used to move the electromagnetic induction detector 4 between the front bracket 1 and the rear bracket 2. The moving assembly is composed of a reciprocating screw 3 and a connecting gear 37. The reciprocating screw 3 is rotatably installed between the front bracket 1 and the rear bracket 2, and the reciprocating screw 3 is threadedly matched with the electromagnetic induction detector 4. The connecting gear 37 is fixedly installed on one end of the reciprocating screw 3 located in the front bracket 1. When the device detects a fault during its movement along the power line, the device remains stationary on the power line, and then the reciprocating screw 3 is allowed to move. Rotation causes the electromagnetic induction detector 4 to perform a reciprocating movement between the front bracket 1 and the rear bracket 2, that is, a secondary detection is performed on the portion of the power line where the fault is detected, which can better accurately locate the fault point, and because the front bracket 1 and the rear bracket 2 remain stationary during the movement of the electromagnetic induction detector 4, the portion of the power line between the two remains stationary, which can avoid the problem of the power line shaking affecting the accuracy of the detection result. When the electromagnetic induction detector 4 completes the reciprocating movement and resets, the device continues to move on the power line until the overall fault detection processing is completed.

[0046] A driving component is installed in the front bracket 1, and the driving component cooperates with the general control component, the cleaning component and the moving component. The driving component can only drive the moving component or the general control component and the cleaning component at the same time (the driving component is configured to perform only one of the following driving operations at the same time: a) driving the moving component; b) driving the general control component and the cleaning component at the same time), and the driving processing of the moving component or the general control component and the cleaning component by the driving component is controlled by the electromagnetic induction detector 4. The driving of the moving component or the driving of the general control component and the cleaning component by the driving component is automatically switched according to the result of the initial detection by the electromagnetic induction detector 4. When a fault signal is first detected during the movement of the device along the power line, the driving component switches from driving the general control component and the cleaning component to driving the moving component, and after driving the moving component to work for a certain period of time, it automatically switches to driving the general control component and the cleaning component again. The working time of the moving component is defined as the time for the electromagnetic induction detector 4 to complete a complete reciprocating movement between the front bracket 1 and the rear bracket 2.

[0047] The driving assembly consists of a driving shaft 32, a first gear 33, a second gear 35, a servo motor 38, a driving rod 39, a small gear 41, a large gear 42 and a fixed gear 43. The driving shaft 32 is rotatably mounted in the front bracket 1, and the first gear 33 and the second gear 35 are fixedly mounted at both ends of the driving shaft 32 respectively. A first rack 34 is fixedly mounted on the side wall of the arc plate 27, and the first rack 34 is meshed with the first gear 33. A second rack 36 is fixedly mounted on the side wall of the arc frame 30, and the second rack 36 is meshed with the second gear 35. When the driving shaft 32 rotates, the first gear 33 and the second gear 35 can be driven to rotate at the same time, and then the meshing of the first gear 33 with the first rack 34 and the meshing of the second gear 35 with the second rack 36 make the two arc plates 27 and the two arc frames 30 rotate at the same time, so that the walking assembly and the cleaning assembly are operated at the same time, so that the device moves along the power line and cleans the area to be detected at the same time.

[0048] The first gear 33, the second gear 35 and the fixed gear 43 are of equal size, and the diameter of the first rack 34 is greater than the diameter of the second rack 36. The advantage of the size design here is that the cleaning rod 31 can have a higher rotation speed, so that it can effectively cover the area to be inspected on the power line during the movement of the device along the power line, thereby ensuring the cleaning effect of the power line.

[0049] The fixed gear 43 is fixedly mounted on the drive shaft 32, the servo motor 38 is fixedly mounted in the front bracket 1, the drive rod 39 is fixedly mounted on the output end of the servo motor 38, the pinion 41 is mounted on the drive rod 39, and the pinion 41 cooperates with the connecting gear 37, the large gear 42 is fixedly mounted on the pinion 41, and the large gear 42 cooperates with the fixed gear 43, an electric push-pull rod 44 is fixedly mounted in the front bracket 1, and the output end of the electric push-pull rod 44 rotates with the large gear 42, a telescopic slot is provided on the drive rod 39, and a telescopic rod 40 that slides with the telescopic slot is fixedly mounted on the pinion 41, and when the large gear 42 is engaged with the fixed gear 43, the pinion 41 is separated from the connecting gear 37. state, at this time, the operation of the servo motor 38 can drive the drive shaft 32 to rotate, driving the operation of the moving component and the cleaning component. When the electromagnetic induction detector 4 detects a fault signal, the electric push-pull rod 44 begins to extend, separating the large gear 42 from the fixed gear 43 and engaging the small gear 41 with the connecting gear 37. At this time, the operation of the servo motor 38 allows the moving component to operate, and due to the size difference design between the large gear 42 and the small gear 41, when the output power of the servo motor 38 remains unchanged, the operating speed of the moving component is lower. Therefore, the reciprocating speed of the electromagnetic induction detector 4 between the front bracket 1 and the rear bracket 2 is low, and the fault point on the power line can be located more accurately under low speed conditions.

[0050] In order to ensure that the electric push-pull rod 44 pushes the large gear 42 when the electromagnetic induction detector 4 detects a fault signal for the first time, a control chip can be installed in the front bracket 1 to receive the detection signal of the electromagnetic induction detector 4 and control the operation of the electric push-pull rod 44 through signal transmission to realize automatic switching of the operation mode of the device. The signal connection and signal processing method between the control chip and the electromagnetic induction detector 4 and the electric push-pull rod 44 are existing technologies and are not described in detail. Since a servo motor 38 is provided, a simple one-way screw can be used for the reciprocating screw 3. It is only necessary to make the servo motor 38 work in the output direction for a certain period of time after the fault signal is detected for the first time. The specific control method is also existing technology and is not elaborated here. The servo motor 38 can specifically adopt a servo motor of model MGX1MB01A010AS. In addition, to avoid interference of the magnetic field around the power line with the control signal, electromagnetic shielding paint can be coated on the device or other anti-electromagnetic interference measures can be taken according to actual needs.

[0051] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A power line fault location device based on the electromagnetic induction principle, comprising an electromagnetic induction detector (4) installed between a front bracket (1) and a rear bracket (2), characterized in that: A front engaging frame (5) is swingably mounted on the front bracket (1), a rear engaging frame (6) is swingably mounted on the rear bracket (2), a plurality of walking components are mounted on both the front bracket (1) and the front engaging frame (5), a master control component coordinated with the plurality of walking components is mounted between the front bracket (1) and the front engaging frame (5), and the master control component is used to drive the plurality of walking components; A cleaning component is installed between the front bracket (1) and the front engaging frame (5), and the cleaning component is used to clean the power line. A moving component that cooperates with the electromagnetic induction detector (4) is installed between the front bracket (1) and the rear bracket (2), and the moving component is used to move the electromagnetic induction detector (4) between the front bracket (1) and the rear bracket (2). A driving component is installed in the front bracket (1), and the driving component cooperates with the master control component, the cleaning component and the moving component. The driving component is configured to perform only one of the following driving processes at the same time: a) driving the moving components; b) driving the master control component and the cleaning component simultaneously; The driving process is controlled by an electromagnetic induction detector (4).

2. The power line fault location device based on the electromagnetic induction principle according to claim 1, characterized in that: The front bracket (1) and the rear bracket (2) are both provided with swing grooves (8), and spring shafts (10) are fixedly installed in the two swing grooves (8); the front clamping frame (5) and the rear clamping frame (6) are both fixedly installed with swing rods (9), and the two swing rods (9) are respectively rotatably connected to the two spring shafts (10); a fixed rod (45) that is slidably matched with the electromagnetic induction detector (4) is fixedly installed between the front bracket (1) and the rear bracket (2); and an arc-shaped guard plate (7) is fixedly installed between the front clamping frame (5) and the rear clamping frame (6).

3. The power line fault location device based on the electromagnetic induction principle according to claim 1, characterized in that: The walking assembly is composed of a groove (11), a protrusion (12), a mounting groove (15), a rotating shaft (16), two driving wheels (17) and two compression springs (13); the groove (11) is arranged on the inner wall of the front bracket (1); the protrusion (12) is slidably connected in the groove (11); the two compression springs (13) are both installed between the groove (11) and the protrusion (12); the mounting groove (15) is arranged on the side wall of the protrusion (12) at one end away from the compression spring (13); the rotating shaft (16) is rotatably installed in the mounting groove (15); the two driving wheels (17) are both fixedly installed on the rotating shaft (16); and a transmission mechanism matched with the rotating shaft (16) is installed on the protrusion (12).

4. The power line fault location device based on the electromagnetic induction principle according to claim 3, characterized in that: The transmission mechanism is composed of a rotating rod (19), a driving bevel gear (20), a driven bevel gear (21), a connecting shaft (22), a slot (23), an insert rod (24) and a helical gear (25); the rotating rod (19) is rotatably mounted on the protrusion (12); the driving bevel gear (20) is fixedly mounted on the rotating rod (19); the driven bevel gear (21) is fixedly mounted on the rotating shaft (16), and the driven bevel gear (21) is meshed with the driving bevel gear (20); the connecting shaft (22) is rotatably mounted in the groove (11); the slot (23) is provided on the connecting shaft (22); the insert rod (24) is fixedly mounted on one end of the rotating rod (19) away from the driving bevel gear (20), and the insert rod (24) is slidably matched with the slot (23); and the helical gear (25) is fixedly mounted on one end of the connecting shaft (22) away from the rotating rod (19).

5. The power line fault location device based on the electromagnetic induction principle according to claim 3, characterized in that: The inner walls of the rear bracket (2) and the rear engaging frame (6) are also provided with a plurality of grooves (11), and a protrusion (12) is slidably installed in each groove (11) via two compression springs (13). A mounting groove (15) is also provided on the side wall of the protrusion (12), and a rotating shaft (16) is rotatably installed in the mounting groove (15), and a driven wheel (18) is fixedly installed on the rotating shaft (16). Two limit blocks (14) are fixedly installed on the side wall of the protrusion (12), and two limit grooves matching the corresponding limit blocks (14) are provided on the side wall of the groove (11).

6. The power line fault location device based on the electromagnetic induction principle according to claim 4, characterized in that: The master control assembly is composed of two rotating grooves (26), two arc-shaped plates (27) and two oblique gear rings (28). The two rotating grooves (26) are respectively arranged on the front bracket (1) and the front engaging frame (5), and the two rotating grooves (26) are spliced ​​into a complete circular ring shape. The two arc-shaped plates (27) are rotatably mounted in the two rotating grooves (26) together. The two oblique gear rings (28) are respectively fixedly mounted on the side walls of the two arc-shaped plates (27), and the two oblique gear rings (28) are meshed with a plurality of helical gears (25) together.

7. The power line fault location device based on the electromagnetic induction principle according to claim 6, characterized in that: The cleaning assembly is composed of two arc-shaped grooves (29), two arc-shaped frames (30) and a plurality of cleaning rods (31). The two arc-shaped grooves (29) are respectively arranged on the front bracket (1) and the front engaging frame (5), and the two arc-shaped grooves (29) are spliced ​​into a complete circular ring. The two arc-shaped frames (30) are rotatably installed in the two arc-shaped grooves (29) together, and a plurality of cleaning rods (31) are fixedly installed on the inner walls of the two arc-shaped frames (30).

8. The power line fault location device based on the electromagnetic induction principle according to claim 7, characterized in that: The moving assembly is composed of a reciprocating screw (3) and a connecting gear (37). The reciprocating screw (3) is rotatably mounted between the front bracket (1) and the rear bracket (2), and the reciprocating screw (3) is threadedly matched with the electromagnetic induction detector (4). The connecting gear (37) is fixedly mounted on one end of the reciprocating screw (3) located inside the front bracket (1).

9. The power line fault location device based on the electromagnetic induction principle according to claim 8, characterized in that: The driving assembly is composed of a driving shaft (32), a first gear (33), a second gear (35), a servo motor (38), a driving rod (39), a small gear (41), a large gear (42) and a fixed gear (43); the driving shaft (32) is rotatably mounted in the front bracket (1); the first gear (33) and the second gear (35) are respectively fixedly mounted on both ends of the driving shaft (32); a first rack (34) is fixedly mounted on the side wall of the arc plate (27), and the first rack (34) is meshed with the first gear (33); A second rack (36) is fixedly mounted on the side wall of the arc frame (30), and the second rack (36) is meshed with the second gear (35); the fixed gear (43) is fixedly mounted on the drive shaft (32); the servo motor (38) is fixedly mounted in the front bracket (1); the drive rod (39) is fixedly mounted on the output end of the servo motor (38); the pinion (41) is mounted on the drive rod (39), and the pinion (41) is matched with the connecting gear (37); the large gear (42) is fixedly mounted on the pinion (41), and the large gear (42) is matched with the fixed gear (43).

10. The power line fault location device based on the electromagnetic induction principle according to claim 9, characterized in that: The first gear (33), the second gear (35) and the fixed gear (43) are of equal size, the diameter of the first rack (34) is larger than the diameter of the second rack (36), an electric push-pull rod (44) is fixedly installed in the front bracket (1), and the output end of the electric push-pull rod (44) is rotatably matched with the large gear (42), a telescopic slot is provided on the driving rod (39), and a telescopic rod (40) is fixedly installed on the pinion (41) and is slidably matched with the telescopic slot.

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