Power distribution network fault detection device

Abstract

The invention relates to the technical field of power grid detection, and discloses a power distribution network fault detection device which comprises a shell, a first driving wheel and a second driving wheel are rotatably arranged in the shell, a flaw detector is installed in the shell, a first winding drum and a second winding drum are rotatably arranged in the shell, and an adhesive tape is arranged between the first winding drum and the second winding drum. An arc blade is arranged above the adhesive tape, an electric push rod is installed on the outer side of the shell, and the telescopic end of the electric push rod is connected with the arc blade. The shell moves along the cable, the flaw detector detects faults of the cable where the shell passes, when the faults are detected, the second motor drives the first winding drum to rotate, the complete adhesive tape is made to rotate to the position above the cable, then the electric push rod drives the arc blade cutter to press downwards, the middle part of the adhesive tape is cut off, and the adhesive tape is pasted to the cable. In conclusion, the fault position of the cable can be conveniently and rapidly found out and marked, and therefore the flaw detection efficiency of the cable is improved.

Description

Technical Field

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

[0002] Distribution network fault detection is an important part of ensuring the safe and stable operation of the power system. Distribution network fault detection technology mainly relies on a variety of advanced detection means and analysis methods to achieve rapid and accurate identification of potential or existing faults in the distribution network.

[0003] These technologies usually combine intelligent inspection, online monitoring, data analysis and other means to improve the efficiency and accuracy of fault detection. The principle of intelligent inspection and monitoring technology: use intelligent inspection robots, drones, infrared thermal imaging and other advanced equipment to conduct real-time online monitoring of distribution network lines and equipment, which is suitable for regular inspection of key lines and equipment, as well as instant monitoring of sudden faults; the principle of traveling wave positioning technology: when a fault occurs in the distribution network, electromagnetic waves (traveling waves) similar to seismic waves will be generated in the power cables. Traveling wave positioning technology captures and records traveling waves in real time by setting traveling wave sensors or monitoring terminals along the distribution lines. The system can detect the fault point accurately by using the traveling wave ranging principle and time difference algorithm, which is suitable for the rapid location of short circuit, grounding, disconnection and other faults. The system can also detect and diagnose the massive power grid operation data through the big data platform and AI algorithm, which is suitable for the long-term monitoring of the distribution network operation status and fault warning. The system can also detect and diagnose the faults in real time by installing various sensors and monitoring equipment, and cooperate with advanced fault diagnosis software system to realize the automatic identification and location of faults, which is suitable for the comprehensive monitoring of distribution network and rapid response to faults.

[0004] At present, when the existing technology performs flaw detection on cables in the distribution network, it is usually necessary for the staff to use a handheld cable flaw detector to scan the cables at close range to determine whether there are cracks or damages on the insulation layer of the cable surface, which may be a hidden fault. However, it is not convenient to perform flaw detection on high cables, which can easily affect the efficiency of cable flaw detection. Therefore, it does not meet the existing needs. In this regard, we propose a distribution network fault detection device. Summary of the invention

[0005] The present invention provides a distribution network fault detection device, which has the beneficial effect of facilitating flaw detection of high-altitude cables, thereby improving the efficiency of cable flaw detection. It solves the problem that in the prior art mentioned in the above background technology, when performing flaw detection on cables in the distribution network, workers usually need to hold a cable flaw detector to scan the cables at close range to determine whether there are cracks or damages on the insulation layer of the cable surface, etc., but it is not convenient to perform flaw detection on high-altitude cables, which easily affects the efficiency of cable flaw detection.

[0006] The present invention provides the following technical solution: a distribution network fault detection device, comprising a shell, a first drive wheel and a second drive wheel are rotatably arranged in the shell, a first motor for driving the second drive wheel is arranged in the shell, a battery is installed in the shell, a flaw detector is installed in the shell, the flaw detector is electrically connected to a detection head, a fixing ring is installed in the shell, the detection head is inserted in the side of the fixing ring, a first reel and a second reel are rotatably arranged inside the shell, a tape is jointly arranged between the first reel and the second reel, a second motor drivingly connected to the first reel is installed in the shell, an arc blade knife is arranged above the tape, an electric push rod is installed on the outside of the shell, the telescopic end of the electric push rod is inserted in the side of the shell and connected to the arc blade knife.

[0007] As an optional solution of a power distribution network fault detection device according to the present invention, wherein: the housing comprises an upper housing and a lower housing rotatably connected to the upper housing, a fastener is arranged between the upper housing and the lower housing, the fastener is used to fix the upper housing and the lower housing, the first driving wheel is rotatably arranged in the upper housing, and the second driving wheel is rotatably arranged in the lower housing; A first driven wheel is rotatably disposed in the upper shell, and a second driven wheel is rotatably disposed in the lower shell. The first driving wheel and the first driven wheel abut against the upper side of the cable to be detected, and the second driving wheel and the second driven wheel abut against the lower side of the cable to be detected.

[0008] As an optional solution of a distribution network fault detection device described in the present invention, wherein: the first driving wheel is coaxially mounted with a first gear, the output shaft of the first motor is drivingly connected to the second driving wheel, a second gear is sleeved on the middle part of the output shaft of the first motor, the first gear is meshed with the second gear, the battery is arranged on a side away from the first motor, an electric wire is electrically connected to the outside of the first motor, and an end of the electric wire is electrically connected to the battery.

[0009] As an optional solution of a distribution network fault detection device described in the present invention, wherein: the number of the detection heads is set to be several, the several detection heads are evenly inserted in a ring direction on the side of the fixed ring, and the several detection heads are connected in series through the electric wires and then electrically connected to the flaw detector, the fixed ring includes an upper half ring and a lower half ring hinged to the upper half ring, the upper half ring is connected to the inner wall of the upper shell, the lower half ring is connected to the inner wall of the lower shell, and the fixed ring is sleeved on the outside of the cable to be detected.

[0010] As an optional solution of a distribution network fault detection device described in the present invention, a first controller is installed on the inside of the shell, a signal input end of the first controller is electrically connected to a signal output end of the flaw detector through the wire, and a signal output end of the first controller is electrically connected to the first motor and the second motor through the wire, respectively.

[0011] As an optional solution of a distribution network fault detection device described in the present invention, a second controller is also installed in the shell, and the signal input end of the second controller is electrically connected to the signal output end of the flaw detector through the wire, and the signal output end of the second controller is electrically connected to the electric push rod through the wire.

[0012] As an optional solution of the distribution network fault detection device described in the present invention, wherein: a bucket shovel is rotatably inserted at the end of the shell, and the bucket shovel includes an upper shovel piece and a lower shovel piece hinged to the upper shovel piece, and a limiting ring is provided at one end of the bucket shovel located in the shell, and a sleeve is installed on the side of the limiting ring, and the number of the sleeves is set to be several, and an insert sleeve is slidably inserted into the inner side of the sleeve, and the end of the insert sleeve is connected to the bucket shovel, and a spring is commonly provided inside the sleeve and the insert sleeve, and the two ends of the spring are respectively connected to the limiting ring and the bucket shovel.

[0013] As an optional solution of a distribution network fault detection device described in the present invention, a gear ring is provided on the outer side of the bucket shovel, the limiting ring and the gear ring each consist of an upper and lower part, and the limiting ring, the gear ring, the opening of the bucket shovel and the opening of the shell are in the same horizontal plane.

[0014] As an optional solution of a distribution network fault detection device described in the present invention, a rotating shaft is rotatably arranged inside the shell, a third gear is installed at one end of the rotating shaft close to the gear ring, and the third gear is intermittently meshed with the gear ring.

[0015] As an optional solution of a distribution network fault detection device described in the present invention, a first pulley is installed in the middle of the output shaft of the first motor, a second pulley is installed at one end of the rotating shaft close to the second gear, and a conveyor belt is commonly provided between the first pulley and the second pulley.

[0016] The present invention has the following beneficial effects:

[0017] 1. The distribution network fault detection device, the first motor drives the shell to move along the cable, and the detection head of the flaw detector performs fault detection on the cable passed by the shell. When a fault is detected, the second motor drives the first reel to rotate, so that the complete tape rotates to the top of the cable, and then the electric push rod drives the arc blade knife to press down, cuts the middle part of the tape and sticks it on the cable, so as to mark the cable at this point. In summary, it is convenient to quickly find the fault location of the cable and mark it, thereby improving the efficiency of flaw detection of the cable.

[0018] 2. The distribution network fault detection device drives the first pulley to rotate through the first motor, and then drives the second pulley to rotate through the conveyor belt, so that the second pulley drives the third gear to rotate through the rotating shaft, and the engagement of the third gear with the gear ring drives the limit ring and the bucket shovel to rotate, so that the bucket shovel rotates while moving with the shell, thereby scraping off dust and other debris attached to the surface of the cable, which not only reduces the load of the cable, but also avoids the influence of dust on the viscosity of the tape as much as possible, making it easier for the tape to be more firmly attached to the fault location of the cable, thereby further improving the efficiency of fault detection.

[0019] 3. In the distribution network fault detection device, the flaw detector sends a fault signal to the first controller, which first controls the first motor to stop rotating, so that the shell stops moving, and then controls the second motor to rotate to rotate the complete tape to the top of the cable. Finally, the flaw detector sends a signal to the second controller, and the second controller controls the electric push rod to drive the arc knife to press down to cut the tape and stick it on the cable. After completing a fault detection and marking, the equipment is restored and the shell moves along the cable again. In summary, it is convenient to control the rotation of the second motor and the extension and retraction of the electric push rod, so as to facilitate sticking the tape on the cable fault location for marking, so that maintenance personnel can quickly find the fault location for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the internal three-dimensional structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the detection cable structure of the present invention.

[0023] Figure 4 It is an exploded view of the local structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the partial cutaway structure of the present invention.

[0025] Figure 6 It is a schematic diagram of the cross-section structure of the bucket shovel of the present invention.

[0026] Figure 7 It is a schematic diagram of the separation structure of the third gear and the gear ring of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the flaw detector of the present invention.

[0028] Fig. 9 It is a circuit diagram of the present invention.

[0029] In the figure: 100, housing; 101, upper housing; 102, lower housing; 103, fastener; 110, first driving wheel; 120, second driving wheel; 121, first driven wheel; 122, second driven wheel; 130, first motor; 140, battery; 141, first gear; 142, second gear; 143, wire; 150, flaw detector; 160, detection head; 170, fixing ring; 171, upper half ring; 172, lower half ring; 180, first reel; 190, second reel; 200, adhesive tape; 210, second motor; 220, arc blade; 230, electric push rod; 231, first controller; 232, second controller; 240, bucket shovel; 241, upper shovel blade; 242, lower shovel blade; 243, limit ring; 244, sleeve; 245, insert cylinder; 246, spring; 250, gear ring; 251, rotating shaft; 252, third gear; 253, first pulley; 254, second pulley; 255, conveyor belt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: This embodiment aims to solve the problem that when the existing technology is used to detect the flaws of cables in the distribution network, the staff usually needs to hold a cable flaw detector to scan the cable at close range to determine whether the insulation layer of the cable surface has cracks or damages, etc. However, it is not convenient to detect the flaws of cables at high places, which easily affects the efficiency of cable flaw detection. Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Fig. 9 , a distribution network fault detection device includes a shell 100.

[0032] The housing 100 includes an upper housing 101 and a lower housing 102 rotatably connected to the upper housing 101. A fastener 103 is provided between the upper housing 101 and the lower housing 102. The fastener 103 is used to fix the upper housing 101 and the lower housing 102. The fastener 103 is configured to cooperate with a bolt and a nut, so that the housing 100 can be easily clamped on the cable to be detected. A first driving wheel 110 and a second driving wheel 120 are rotatably provided in the housing 100. The first driving wheel 110 is rotatably provided in the upper housing 101 through a bearing, and the second driving wheel 120 is rotatably provided in the lower housing 102. A first driven wheel 121 is also rotatably provided in the upper housing 101, and a second driven wheel 122 is also rotatably provided in the lower housing 102. The first driving wheel 110 and the first driven wheel 121 are in contact with the upper side of the cable to be detected, and the second driving wheel 120 and the second driven wheel 122 are in contact with the lower side of the cable to be detected, so that the housing 100 is more balanced when it is sleeved on the cable.

[0033] A first motor 130 for driving the second driving wheel 120 is provided in the shell 100, a battery 140 is installed in the shell 100, a first gear 141 is coaxially installed on the first driving wheel 110, the output shaft of the first motor 130 is transmission-connected with the second driving wheel 120, a second gear 142 is provided in the middle of the output shaft of the first motor 130 through an interference sleeve, the first gear 141 is meshed with the second gear 142, the battery 140 is arranged on a side away from the first motor 130, an electric wire 143 is electrically connected to the outside of the first motor 130, an end of the electric wire 143 is electrically connected to the battery 140, and the first motor 130 and the battery 140 are respectively arranged on both sides of the lower shell 102, so that the center of the shell 100 is biased downward and the weight on the left and right sides is balanced, thereby further improving the balance of the shell 100 moving on the cable.

[0034] A flaw detector 150 is installed in the shell 100, and the flaw detector 150 is electrically connected to a detection head 160. A fixing ring 170 is installed in the shell 100, and the detection head 160 is inserted into the side of the fixing ring 170. The number of the detection heads 160 is set to be several, and the several detection heads 160 are evenly inserted into the side of the fixing ring 170 in a circumferential direction, and the several detection heads 160 are connected in series through wires 143 and then electrically connected to the flaw detector 150. The fixing ring 170 includes an upper half ring 171 and a lower half ring 172 hinged to the upper half ring 171. The upper half ring 171 is fixedly connected to the inner wall of the upper shell 101, and the lower half ring 172 is fixedly connected to the inner wall of the lower shell 102. The fixing ring 170 is sleeved on the outside of the cable to be detected, so that the detection head 160 is close to the insulation layer on the surface of the cable.

[0035] The flaw detector 150 is configured as an ultrasonic flaw detector, which is a commonly used device in cable flaw detection. Its principle is mainly based on the propagation and reflection characteristics of ultrasonic waves in the medium, and the generation and reception of ultrasonic waves: the ultrasonic flaw detector generates an excitation electrical signal through the circuit, and transmits it to crystals with piezoelectric effect such as quartz and lithium sulfate, causing them to vibrate and generate ultrasonic waves. When the ultrasonic wave encounters defects such as cracks or damage in the cable, it will be reflected. The reflected ultrasonic wave is received by the piezoelectric crystal again and converted into an electrical signal for processing. After the received reflected wave signal is processed by the signal processing circuit, it will also form an image or waveform displayed on the flaw detector. According to the shape, position and other information of the waveform, it can be judged whether there are defects in the cable and the location and size of the defects. This is a conventional technical means and will not be elaborated here.

[0036] A first reel 180 and a second reel 190 are rotatably arranged inside the shell 100, a tape 200 is arranged between the first reel 180 and the second reel 190, a second motor 210 is installed in the shell 100 and is transmission-connected to the first reel 180, an arc knife 220 is arranged above the tape 200, and an electric push rod 230 is installed outside the shell 100, the telescopic end of the electric push rod 230 is inserted into the side of the shell 100 and is fixedly connected to the arc knife 220.

[0037] In this embodiment: the first motor 130 drives the second driving wheel 120 and the second gear 142 to rotate, and the first gear 141 is meshed with the second gear 142, so that the first gear 141 drives the first driving wheel 110 to rotate, so that the first driving wheel 110 and the second driving wheel 120 simultaneously contact and rotate on the upper and lower sides of the cable, so that the housing 100 moves along the cable; At the same time, the detection head 160 of the flaw detector 150 detects cracks or damages on the cable passing through the shell 100. When a fault is detected, the second motor 210 drives the first reel 180 to rotate, so that the complete tape 200 rotates above the cable. Then, the electric push rod 230 drives the arc knife 220 to press down, cuts the middle part of the tape 200 and sticks it on the cable to mark the cable at this point. In summary, it is convenient to quickly find the fault location of the cable and mark it, thereby improving the efficiency of flaw detection of the cable, and solving the problem as much as possible that when the prior art performs flaw detection on the cables in the distribution network, the staff usually needs to hold the cable flaw detector to scan the cable at close range to determine whether there are cracks or damages on the insulation layer of the cable surface. However, it is not convenient to perform flaw detection on high cables, which easily affects the efficiency of cable flaw detection.

[0038] Embodiment 2: This embodiment is intended to promote the solution of the problem that dust and other debris are easily accumulated on the surface of the cable, which not only increases the weight of the cable, but also easily reduces the viscosity of the tape 200 on the cable, making it inconvenient for the tape 200 to be firmly attached to the cable, thereby making it inconvenient to mark the fault location of the cable. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 A bucket shovel 240 is rotatably inserted at the end of the shell 100. The bucket shovel 240 includes an upper shovel piece 241 and a lower shovel piece 242 hinged to the upper shovel piece 241. A limiting ring 243 is provided at one end of the bucket shovel 240 located in the shell 100. A sleeve 244 is fixedly installed on the side of the limiting ring 243. The number of sleeves 244 is set to be several. An insert sleeve 245 is slidably inserted inside the sleeve 244. The end of the insert sleeve 245 is fixedly connected to the bucket shovel 240. A spring 246 is commonly provided inside the sleeve 244 and the insert sleeve 245. The two ends of the spring 246 are respectively fixedly connected to the limiting ring 243 and the bucket shovel 240.

[0039] A gear ring 250 is provided on the fixed sleeve outside the bucket shovel 240. The limiting ring 243 and the gear ring 250 are composed of an upper and lower part. The openings of the limiting ring 243, the gear ring 250 and the bucket shovel 240 are in the same horizontal plane as the opening of the shell 100. A rotating shaft 251 is rotatably provided on the inside of the shell 100. A third gear 252 is fixedly installed on one end of the rotating shaft 251 close to the gear ring 250, and the third gear 252 is intermittently meshed with the gear ring 250.

[0040] A first pulley 253 is fixedly installed at the middle of the output shaft of the first motor 130 , a second pulley 254 is fixedly installed at one end of the rotating shaft 251 close to the second gear 142 , and a conveyor belt 255 is sleeved between the first pulley 253 and the second pulley 254 .

[0041] In this embodiment: when the first motor 130 drives the shell 100 to move along the cable, the port of the bucket shovel 240 is wrapped and attached to the surface of the cable, and the first motor 130 drives the first pulley 253 to rotate, and then drives the second pulley 254 to rotate through the conveyor belt 255, so that the second pulley 254 drives the third gear 252 to rotate through the rotating shaft 251, and the engagement of the third gear 252 with the gear ring 250 drives the limit ring 243 and the bucket shovel 240 to rotate, so that the bucket shovel 240 rotates while moving with the shell 100, thereby scraping off dust and other debris attached to the surface of the cable, which not only reduces the load on the cable, but also avoids the influence of dust on the viscosity of the tape 200 as much as possible, so that the tape 200 is more firmly attached to the fault location of the cable, thereby further improving the efficiency of fault detection.

[0042] It should be noted that: when the detection is completed and the shell 100 needs to be removed from the cable, if the opening of the bucket shovel 240 does not overlap with the opening of the shell 100, it is not convenient to separate the upper shell 101 and the lower shell 102. At this time, the bucket shovel 240 is held and pulled outward, and the insert 245 slides out of the sleeve 244. At the same time, the spring 246 is stretched, and then the gear ring 250 moves away from the third gear 252 with the bucket shovel 240 until the gear ring 250 is disengaged from the third gear 252. The bucket shovel 240 can be manually rotated so that the opening of the bucket shovel 240 and the opening of the shell 100 are in the same horizontal plane, that is, the opening of the bucket shovel 240 overlaps with the opening of the shell 100, and the upper shell 101 and the lower shell 102 can be separated, thereby facilitating the removal of the shell 100 from the cable.

[0043] Embodiment 3: This embodiment is intended to promote the solution of the problem that it is inconvenient to control the rotation of the second motor 210 and the extension of the electric push rod 230, thereby making it inconvenient to stick the tape 200 on the cable fault. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 and Fig. 9 A first controller 231 is installed inside the shell 100. The first controller 231 is set as a motor controller. The signal input end of the first controller 231 is electrically connected to the signal output end of the flaw detector 150 through the wire 143, and the signal output end of the first controller 231 is electrically connected to the first motor 130 and the second motor 210 through the wire 143 respectively.

[0044] A second controller 232 is also installed in the shell 100. The second controller 232 is set as an electric lifting rod controller. The signal input end of the second controller 232 is electrically connected to the signal output end of the flaw detector 150 through the wire 143, and the signal output end of the second controller 232 is electrically connected to the electric push rod 230 through the wire 143. The motor controller controls the rotation of the output shafts of the first motor 130 and the second motor 210, and the electric lifting rod controller controls the extension and retraction of the telescopic end of the electric push rod 230.

[0045] In this embodiment: when the flaw detector 150 detects a fault in the cable, the flaw detector 150 sends a fault signal to the first controller 231 through the wire 143, and then the first controller 231 first controls the first motor 130 to stop rotating, so that the shell 100 stops moving, and then the first controller 231 controls the second motor 210 to rotate to rotate the complete tape 200 to the top of the cable, and finally the flaw detector 150 sends a signal to the second controller 232, and the second controller 232 controls the electric push rod 230 to drive the arc blade knife 220 to press down to cut the tape 200 and stick it on the cable. After completing a fault detection and marking, the equipment is restored, and the shell 100 moves along the cable again. In summary, it is convenient to control the rotation of the second motor 210 and the extension and retraction of the electric push rod 230, so as to facilitate sticking the tape 200 on the cable fault location for marking, so that maintenance personnel can quickly find the fault location for maintenance.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A distribution network fault detection device, comprising a housing (100), a first drive wheel (110) and a second drive wheel (120) being rotatably arranged in the housing (100), a first motor (130) for driving the second drive wheel (120) being arranged in the housing (100), a storage battery (140) being installed in the housing (100), a flaw detector (150) being installed in the housing (100), and a detection head (160) being electrically connected to the flaw detector (150), characterized in that: A fixing ring (170) is installed in the shell (100), and the detection head (160) is inserted into the side of the fixing ring (170). A first reel (180) and a second reel (190) are rotatably arranged inside the shell (100), and a tape (200) is arranged between the first reel (180) and the second reel (190). A second motor (210) drivingly connected to the first reel (180) is installed in the shell (100), and an arc blade knife (220) is arranged above the tape (200). An electric push rod (230) is installed outside the shell (100), and the telescopic end of the electric push rod (230) is inserted into the side of the shell (100) and connected to the arc blade knife (220).

2. A distribution network fault detection device according to claim 1, characterized in that: The housing (100) comprises an upper housing (101) and a lower housing (102) rotatably connected to the upper housing (101); a fastener (103) is provided between the upper housing (101) and the lower housing (102); the fastener (103) is used to fix the upper housing (101) and the lower housing (102); the first driving wheel (110) is rotatably provided in the upper housing (101); and the second driving wheel (120) is rotatably provided in the lower housing (102); A first driven wheel (121) is rotatably disposed in the upper shell (101), and a second driven wheel (122) is rotatably disposed in the lower shell (102); the first driving wheel (110) and the first driven wheel (121) are in contact with the upper side of the cable to be detected, and the second driving wheel (120) and the second driven wheel (122) are in contact with the lower side of the cable to be detected.

3. A distribution network fault detection device according to claim 1, characterized in that: The first driving wheel (110) is coaxially mounted with a first gear (141); the output shaft of the first motor (130) is drivingly connected to the second driving wheel (120); a second gear (142) is sleeved on the middle of the output shaft of the first motor (130); the first gear (141) is meshed with the second gear (142); the storage battery (140) is arranged on a side away from the first motor (130); an electric wire (143) is electrically connected to the outside of the first motor (130); and an end of the electric wire (143) is electrically connected to the storage battery (140).

4. A distribution network fault detection device according to claim 2, characterized in that: The number of the detection heads (160) is set to be a plurality, and the plurality of detection heads (160) are uniformly inserted in a circumferential direction on the side of the fixing ring (170), and the plurality of detection heads (160) are connected in series through electric wires (143) and then electrically connected to the flaw detector (150). The fixing ring (170) comprises an upper half ring (171) and a lower half ring (172) hinged to the upper half ring (171), the upper half ring (171) is connected to the inner wall of the upper shell (101), and the lower half ring (172) is connected to the inner wall of the lower shell (102), and the fixing ring (170) is sleeved on the outer side of the cable to be detected.

5. A distribution network fault detection device according to claim 1, characterized in that: A first controller (231) is installed inside the housing (100); a signal input end of the first controller (231) is electrically connected to a signal output end of the flaw detector (150) via an electric wire (143); and a signal output end of the first controller (231) is electrically connected to the first motor (130) and the second motor (210) via the electric wire (143).

6. A distribution network fault detection device according to claim 1, characterized in that: A second controller (232) is also installed in the housing (100); a signal input end of the second controller (232) is electrically connected to a signal output end of the flaw detector (150) via an electric wire (143); and a signal output end of the second controller (232) is electrically connected to the electric push rod (230) via an electric wire (143).

7. A distribution network fault detection device according to claim 1, characterized in that: A bucket shovel (240) is rotatably inserted at the end of the housing (100), and the bucket shovel (240) comprises an upper shovel blade (241) and a lower shovel blade (242) hinged to the upper shovel blade (241). A limiting ring (243) is provided at one end of the bucket shovel (240) located in the housing (100), and a sleeve (244) is installed on the side of the limiting ring (243). The number of sleeves (244) is set to be several, and an inserting sleeve (245) is slidably inserted inside the sleeve (244). The end of the inserting sleeve (245) is connected to the bucket shovel (240), and a spring (246) is provided inside the sleeve (244) and the inserting sleeve (245). The two ends of the spring (246) are respectively connected to the limiting ring (243) and the bucket shovel (240).

8. A distribution network fault detection device according to claim 7, characterized in that: A toothed ring (250) is sleeved on the outer side of the bucket shovel (240); the limiting ring (243) and the toothed ring (250) are composed of upper and lower parts; and the openings of the limiting ring (243), the toothed ring (250), and the bucket shovel (240) are on the same horizontal plane as the opening of the housing (100).

9. A distribution network fault detection device according to claim 8, characterized in that: A rotating shaft (251) is rotatably arranged inside the housing (100), and a third gear (252) is installed at one end of the rotating shaft (251) close to the gear ring (250), and the third gear (252) is intermittently meshed with the gear ring (250).

10. A distribution network fault detection device according to claim 9, characterized in that: A first belt pulley (253) is installed in the middle of the output shaft of the first motor (130), a second belt pulley (254) is installed at one end of the rotating shaft (251) close to the second gear (142), and a conveyor belt (255) is sleeved between the first belt pulley (253) and the second belt pulley (254).

Images