Power cable detection device and test method thereof

Abstract

The invention relates to the field of cable fault detection, in particular to a power cable detection device and a test method thereof, the device comprises a detection box, the detection box is provided with a display and a first handle, and the lower part of the detection box is connected with a lifting adjusting device; a threaded rod in the lifting adjusting device rotates to drive a second pipeline to contract or stretch out, and meanwhile, a gear ring can be driven to rotate, so that when the second pipeline contracts, grease, dust and smoke attached to the inner wall of the second pipeline are cleaned, and the situation that the pipeline vibrates when air draft movement is conducted next time is prevented; the problem that ionized powder is brought into a detection instrument and detection misjudgment occurs is solved, a second handle is rotated to drive a square rod and a second rotating block to rotate, so that the angle of an angle rotating piece is changed, the problem that a first pipeline and a second pipeline are prone to being stressed and deviated when being inserted into a cable well is solved, and the detection precision is improved.

Description

Technical Field

[0001] The invention belongs to the field of cable fault detection, in particular to a power cable detection device and a testing method thereof. Background Art

[0002] As the process of urban power grid cabling accelerates and the scale of high-voltage cable laying continues to expand, the problem of locating hidden faults has become increasingly prominent. Traditional fault detection relies on the dispatching department to complete the substation power outage operation, and then use time domain reflectometers and other equipment for rough positioning, and then verify through manual excavation. There are problems such as cumbersome detection process, low positioning accuracy, and a large range of power outage impact. Especially for the complex environment of urban underground pipeline corridors and cable wells, existing technologies are difficult to achieve rapid and accurate fault positioning, resulting in an average repair time of more than 8 hours, seriously affecting power supply reliability. In addition, manual inspection methods are inefficient and cannot meet the real-time monitoring needs of smart grids. It is urgent to develop new online monitoring devices to achieve cable insulation degradation warning and precise fault location. This is of great significance to improving the intelligent level of urban power grid operation and maintenance and emergency repair efficiency.

[0003] A patent application with publication number CN118050607B discloses a fault cable detection device and detection method, including a bending tube rotatably connected to the lower end of a pipeline; a rotating component is connected to the pipeline; the bending tube is driven to rotate by motor 2 to automatically adjust the suction position, which is beneficial to improving the detection range and also improves the convenience of manual operation. The bending tube is divided into two parts, upper and lower, and the two parts of the bending tube are adjusted to a straight state by motor 1. Motor 1 can also adjust the bending angle of the bending tube, thereby improving the convenience of manual operation.

[0004] Although the above-mentioned device can bend the pipe during use, in the complex underground pipe corridors and cable wells, the bent pipe is easy to touch the surrounding walls and cables, the bending angle cannot be stabilized, and the bending effect is poor. In addition, the smoke generated by the electric shock after the cable short-circuit contains a large amount of grease and dust smoke, which is generated by ionization and has strong adhesion. Therefore, when the exhaust fan is used to adsorb the gas, it will adhere to the inside of the pipe. When the exhaust moves next time, the pipe will vibrate, and the ionized powder will also be brought into the detection instrument, resulting in the problem of misdetection. Summary of the Invention

[0005] The present invention provides a power cable detection device and a testing method thereof, which solve the technical problems in the related art that in a complex underground pipeline corridor, the bent pipes are prone to touch the surrounding walls and cables, the bending angle cannot be stabilized, the bending effect is poor, and the smoke generated by the electric shock after the cable is short-circuited contains a large amount of grease and dust smoke, which is generated by ionization and has strong adhesion. Therefore, when an exhaust fan is used to adsorb the gas, it will adhere to the inside of the pipe. When the exhaust fan is moved next time, the pipe will vibrate, and the ionized powder will also be brought into the detection instrument, resulting in misdetection.

[0006] A first aspect of the present invention discloses a power cable detection device, comprising a detection box, wherein the detection box is provided with a display and a first handle, a lifting and adjusting device is connected to the lower portion of the detection box, a first pipe is connected to the lower portion of the lifting and adjusting device, a second pipe is slidably installed inside the first pipe, a bending pipe is connected to the bottom of the second pipe, an exhaust pipe port is fixedly installed at the bottom of the bending pipe, a filter is fixedly installed at the bottom of the exhaust pipe port, a fan and related gas detectors are provided in the detection box, and the lifting and adjusting device is used to adjust the bending angle of the filter and clean the interior of the second pipe; The lifting and adjusting device includes an adjusting part, a lifting part, a cleaning part, an extruding part, and an angle rotating part. The bottom end of the detection box is connected to a first pipe. The interior of the first pipe is provided with an adjusting part and a lifting part in symmetrical positions. The interior of the first pipe is rotatably installed with a cleaning part. The bottom of the adjusting part is connected to an extruding part. The lower part of the extruding part is connected to an angle rotating part. The rotation of the lifting part drives the cleaning part to clean the inner wall of the second pipe. The rotation of the adjusting part drives the extruding part to lift and lower and adjust the angle of the angle rotating part. The bottom of the angle rotating part is connected to the exhaust pipe port, driving the exhaust pipe port to adjust the angle.

[0007] As a further optimization scheme of the present invention, the cleaning part includes a gear ring rotatably mounted inside the first pipe, a cleaning rod is fixedly mounted on the bottom of the gear ring, a cleaning block arranged in a circular array is rotatably mounted on the lower part of the cleaning rod, and a number of cleaning brushes are fixedly mounted on the end of the cleaning block.

[0008] As a further optimization scheme of the present invention, the lifting member includes a third fixed plate fixedly installed on the inner wall of the first pipe, a threaded rod is rotatably installed inside the third fixed plate, a ratchet gear is fixedly installed on the top of the threaded rod, a lifting gear is fixedly installed on the outer wall of the ratchet gear, the lifting gear is connected to the gear ring, a pipe protrusion is fixedly installed on the top of the second pipe, and the outer wall of the threaded rod is threadedly installed on the inside of the pipe protrusion.

[0009] As a further optimization scheme of the present invention, the angle rotating member includes a first T-shaped block fixedly installed on the lower part of the second pipe, a second T-shaped block is rotatably installed on the bottom of the first T-shaped block, the outer wall of the second T-shaped block is connected to the exhaust pipe mouth, a sliding rod is fixedly installed on the upper side wall of the second T-shaped block, and an annular block is slidably installed on the outer wall of the sliding rod, a limiting spring is arranged inside the annular block and is connected to the sliding rod, a support block is arranged on the top of the first T-shaped block, and the support block is connected to the extrusion member.

[0010] As a further optimization scheme of the present invention, the adjusting member includes a second fixed plate fixedly installed on the inner wall of the upper part of the first pipe, a square rod is rotatably installed inside the second fixed plate, a first rotating block is slidably installed on the outer wall of the square rod, the first rotating block is rotatably installed on the top of the pipe protrusion, a second rotating block is fixedly installed on the outer wall of the first rotating block, a third rotating block is rotatably installed inside the pipe protrusion, and the third rotating block slides outside the square rod.

[0011] As a further optimization scheme of the present invention, the extrusion member includes a first extrusion rod slidably mounted inside the second pipe, the bottom of the first extrusion rod is fixedly mounted with an extrusion protrusion, the outside of the extrusion protrusion is rotatably mounted with a first U-shaped block, the side of the first U-shaped block is slidably mounted with a telescopic rod, the end of the telescopic rod is slidably mounted with an extrusion rotating block, and the extrusion rotating block is rotatably mounted on the upper part of the support block. Both ends of the extrusion rotating block are provided with telescopic rods, and the side of the extrusion rotating block away from one end of the first U-shaped block is slidably mounted with a second U-shaped block, the bottom end of the second U-shaped block is fixedly mounted with a second extrusion rod, the bottom end of the second extrusion rod is fixedly connected to the top of the annular block, the top of the first T-shaped block is fixedly mounted with a symmetrically arranged fifth fixing rod, the top of the fifth fixing rod is fixedly mounted with a fourth fixing plate, the second extrusion rod is slidably mounted inside the fourth fixing plate, and the top of the fourth fixing plate is fixedly mounted with a first spring.

[0012] As a further optimization scheme of the present invention, a first fixed plate is fixedly installed on the upper part of the first pipe, a second handle is rotatably installed inside the first fixed plate, a fourth rotating rod is provided on the outside of the second handle, and an adjusting gear is provided on the top of the square rod, and the adjusting gear is engaged with the fourth rotating rod.

[0013] As a further optimization solution of the present invention, the pipeline protrusion is provided with an inwardly concave landslide, the bottom of the third rotating block is provided with a landslide with a uniformly decreasing height, and the bottom of the third rotating block contacts the top of the first extrusion rod.

[0014] As a further optimization solution of the present invention, a torsion spring is provided at the connection position between the cleaning rod and the cleaning block, and the maximum extended length of the cleaning block is smaller than the inner diameter of the second pipe.

[0015] A second aspect of the present invention discloses a power cable testing method, comprising the following steps: Step 1: Use a motor to drive the threaded rod to rotate, and the threaded rod drives the second pipe to rise and fall. A ratchet gear is provided on the top of the threaded rod to prevent the gear ring from rotating until the second pipe extends into the cable compartment. The relevant gas detector and fan inside the detection box are started. The fan inside the detection box draws air inward, so that the gas can be detected. Step 2: Rotate the second handle, the second handle drives the adjusting gear and the square rod to rotate, the rotation of the square rod drives the second rotating block to rotate, the second rotating block rotates and squeezes the first extrusion rod, the first extrusion rod drives the second extrusion rod to rise through the first U-shaped block and the extrusion rotating block, the rising of the second extrusion rod drives the annular block to rise, the rising of the annular block drives the sliding rod to rotate along the top center of the second T-shaped block, thereby adjusting the angle and direction of the external exhaust pipe opening of the second T-shaped block; Step 3: Adjust the fan inside the detection box so that the fan inside the detection box blows air outward, and then rotate the threaded rod in the opposite direction. The threaded rod drives the gear ring to rotate through the ratchet gear and the lifting gear. The rotation of the gear ring causes the cleaning rod to rotate. The rotation of the cleaning rod causes the multiple cleaning blocks to be subjected to centripetal force, driving the cleaning blocks to extend and rotate around the gear ring as the center of the circle. When the second pipe rises, the interior of the second pipe is cleaned.

[0016] The beneficial effects of the present invention are: The present invention discloses a power cable detection device and a testing method thereof. The rotation of the threaded rod inside the lifting and adjusting device can drive the second pipe to retract or extend, and at the same time drive the gear ring to rotate, so that when the second pipe retracts, the grease and dust and smoke adhering to the inner wall of the second pipe are cleaned, thereby preventing the pipe from vibrating during the next ventilation movement, and ionized powder from being brought into the detection instrument, resulting in misjudgment of the detection. By rotating the second handle, the square rod and the second rotating block are driven to rotate, so that the angle of the angle rotating part changes, and at the same time, the problem of the first pipe and the second pipe being easily offset due to force when inserted into the cable well is prevented, thereby improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall appearance of the device of the present invention; Figure 2 It is a schematic diagram of the internal structure of the overall device of the present invention; Figure 3 This is an installation diagram of the internal structure of the overall device of the present invention; Figure 4 It is a schematic diagram of the internal structure of the cleaning piece of the present invention; Figure 5 It is a schematic diagram of part of the internal structure of the adjusting member of the present invention; Figure 6 It is a schematic diagram of part of the internal structure of the angle rotating member of the present invention; Figure 7 yes Figure 6 Enlarged view of point A in the middle; Figure 8 yes Figure 6 Enlarged view of point B in the middle; Figure 9 It is a schematic diagram of the internal structure installation of the lifting member of the present invention.

[0018] In the picture: 1. Inspection box; 11. Display; 12. First handle; 13. First pipe; 14. Second pipe; 141. Pipe protrusion; 15. Exhaust pipe opening; 16. Filter; 17. Bend pipe; 2. Lifting adjustment device; 21. First fixed plate; 22. Adjusting member; 221. Adjusting gear; 222. Second fixed plate; 223. Square rod; 224. First rotating block; 225. Second rotating block; 226. Third rotating block; 227. Fourth rotating rod; 228. Second handle; 23. Lifting member; 231. Ratchet gear; 232. Threaded rod; 233. Lifting gear; 234. Third fixed plate; 24. Cleaning member; 241. Gear ring; 242. Cleaning rod; 24 3. Cleaning block; 244. Cleaning brush; 25. Extrusion piece; 251. First extrusion rod; 252. Extrusion protrusion; 253. First U-shaped block; 254. Telescopic rod; 255. Extrusion rotation block; 256. Second U-shaped block; 257. Second extrusion rod; 258. First spring; 259. Fourth fixed plate; 2591. Fifth fixed rod; 26. Angle rotation piece; 261. First T-shaped block; 262. Second T-shaped block; 263. Support block; 264. Ring block; 265. Sliding rod. DETAILED DESCRIPTION

[0019] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0020] like Figures 1 to 3 As shown, a power cable detection device according to an embodiment of the present invention includes a detection box 1, which is provided with a display 11 and a first handle 12. The lower part of the detection box 1 is connected to a lifting and adjusting device 2, and the lower part of the lifting and adjusting device 2 is connected to a first pipe 13. A second pipe 14 is slidably installed inside the first pipe 13, and a bending pipe 17 is connected to the bottom of the second pipe 14. An exhaust pipe port 15 is fixedly installed at the bottom of the bending pipe 17, and a filter screen 16 is fixedly installed at the bottom of the exhaust pipe port 15. The detection box 1 is provided with a fan and related gas detectors. The lifting and adjusting device 2 is used to adjust the bending angle of the filter screen 16 and clean the inside of the second pipe 14. like Figures 3 to 9 As shown, the lifting and adjusting device 2 includes an adjusting part 22, a lifting part 23, a cleaning part 24, an extruding part 25, and an angle rotating part 26. The bottom end of the detection box 1 is connected to the first pipe 13, and the interior of the first pipe 13 is provided with an adjusting part 22 and a lifting part 23 in symmetrical positions. The interior of the first pipe 13 is rotatably installed with a cleaning part 24, the bottom of the adjusting part 22 is connected to an extruding part 25, and the lower part of the extruding part 25 is connected to an angle rotating part 26. The rotation of the lifting part 23 drives the cleaning part 24 to clean the inner wall of the second pipe 14, and the rotation of the adjusting part 22 drives the extruding part 25 to lift and adjust the angle of the angle rotating part 26. The bottom of the angle rotating part 26 is connected to the exhaust pipe port 15, driving the exhaust pipe port 15 to adjust the angle.

[0021] It should be noted that a fan is provided inside the detection box 1, which can blow and suck air, and the detection box 1 is provided with relevant gas detection instruments for detecting relevant gases generated after the cable short circuit. When it is necessary to drive the second pipe 14 to extend, the motor can be used to drive the lifting member 23 to rotate, so that the second pipe 14 can slide inside the first pipe 13, and then the fan inside the detection box 1 is started to rotate, so that the smoke after the cable short circuit is adsorbed into the inside of the exhaust pipe mouth 15, and when it is necessary to adjust the angle of the exhaust pipe mouth 15, the motor can be used to drive the adjustment member 22 to rotate, and the rotation of the adjustment member 22 drives the extrusion member 25 to descend, and the descent of the extrusion member 25 drives the angle rotating member 26 to rotate, and the lowering of the angle rotating member 26 The part is connected to the exhaust pipe mouth 15, so as to realize the angle adjustment of the exhaust pipe mouth 15 until the detection work is completed. When the inner wall of the second pipe 14 needs to be cleaned, the fan inside the detection box 1 is started to rotate in the opposite direction, so as to blow air in the direction of the exhaust pipe mouth 15. Then the lifting member 23 can be rotated in the opposite direction. The lifting member 23 is engaged with the cleaning member 24, thereby driving the cleaning member 24 to rotate. The rotation of the cleaning member 24 causes the cleaning member 24 to be subjected to centrifugal force, so that it extends to clean the inner wall of the second pipe 14, preventing the gas smoke particles after the cable short circuit ionization from passing through the inside of the second pipe 14 and causing adhesion. When the second pipe 14 is extended and retracted next time, the internal smoke and dust fall into the interior of the detection box 1 and affect the detection effect.

[0022] like Figures 3 to 5 As shown, the cleaning member 24 includes a gear ring 241 rotatably mounted inside the first pipe 13, a cleaning rod 242 is fixedly mounted on the bottom of the gear ring 241, a cleaning block 243 arranged in a circumferential array is rotatably mounted on the lower part of the cleaning rod 242, and a plurality of cleaning brushes 244 are fixedly mounted on the end of the cleaning block 243.

[0023] It should be noted that when the gear ring 241 rotates, it drives the cleaning rod 242 and the cleaning block 243 to rotate, so that the cleaning block 243 is subjected to centrifugal force, thereby driving the cleaning block 243 to open, so that the cleaning brush 244 contacts the inside of the second pipe 14, thereby cleaning it, and a torsion spring is provided at the connection position between the cleaning block 243 and the cleaning rod 242, so when the gear ring 241 is not rotating, it is kept as shown. Figure 4 status.

[0024] like Figures 3 to 5 As shown, Figure 9As shown, the lifting member 23 includes a third fixed plate 234 fixedly mounted on the inner wall of the first pipe 13, a threaded rod 232 is rotatably mounted inside the third fixed plate 234, a ratchet gear 231 is fixedly mounted on the top of the threaded rod 232, a lifting gear 233 is fixedly mounted on the outer wall of the ratchet gear 231, and the lifting gear 233 is connected to the gear ring 241, a pipe protrusion 141 is fixedly mounted on the top of the second pipe 14, and the outer wall of the threaded rod 232 is threadedly mounted on the inside of the pipe protrusion 141.

[0025] It should be noted that the rotation of the threaded rod 232 can drive the second pipe 14 to rise and fall, and a ratchet gear 231 and a lifting gear 233 are provided on the top of the threaded rod 232. Therefore, when the motor drives the threaded rod 232 to rotate, causing the second pipe 14 to descend, it will not drive the gear ring 241 to rotate. When the threaded rod 232 rotates in the opposite direction, the gear ring 241 is driven to rotate under the action of the ratchet gear 231 and the lifting gear 233, thereby cleaning the inner wall of the second pipe 14.

[0026] like Figures 6 to 8 As shown, the angle rotating member 26 includes a first T-shaped block 261 fixedly mounted on the lower part of the second pipe 14, a second T-shaped block 262 is rotatably mounted on the bottom of the first T-shaped block 261, the outer wall of the second T-shaped block 262 is connected to the exhaust pipe mouth 15, a sliding rod 265 is fixedly mounted on the upper side wall of the second T-shaped block 262, and an annular block 264 is slidably mounted on the outer wall of the sliding rod 265, a limiting spring is arranged inside the annular block 264 and is connected to the sliding rod 265, a support block 263 is arranged on the top of the first T-shaped block 261, and the support block 263 is connected to the extrusion member 25.

[0027] It should be noted that the lifting and lowering of the slide rod 265 can drive the second T-shaped block 262 to rotate along the top of the second T-shaped block 262 as the center of the circle, and an annular block 264 is provided on the outside of the slide rod 265. The annular block 264 is connected to the extrusion piece 25, so that when the extrusion piece 25 is lifted and lowered, the second T-shaped block 262 can be driven to rotate, thereby adjusting the direction of the exhaust pipe mouth 15.

[0028] like Figures 3 to 6 As shown, Figure 9As shown, the adjusting member 22 includes a second fixed plate 222 fixedly mounted on the upper inner wall of the first pipe 13, a square rod 223 is rotatably mounted inside the second fixed plate 222, a first rotating block 224 is slidably mounted on the outer wall of the square rod 223, the first rotating block 224 is rotatably mounted on the top of the pipe protrusion 141, a second rotating block 225 is fixedly mounted on the outer wall of the first rotating block 224, a third rotating block 226 is rotatably mounted inside the pipe protrusion 141, and the third rotating block 226 slides outside the square rod 223.

[0029] It should be noted that the first rotating block 224 and the second rotating block 225 rise and fall with the second pipe 14, and the first rotating block 224 is rotatably installed on the top of the pipe protrusion 141. Therefore, when the second rotating block 225 rotates, the extrusion member 25 can be squeezed, so that the extrusion member 25 drives the annular block 264 to rise and fall, thereby adjusting the angle of the exhaust pipe mouth 15, and the first rotating block 224 slides on the outer wall of the square rod 223. Therefore, when the second pipe 14 rises and falls and drives the second rotating block 225 to rise and fall, it will not drive the second rotating block 225 to rotate.

[0030] like Figures 5 to 8 As shown, the extrusion member 25 includes a first extrusion rod 251 slidably mounted inside the second pipe 14, an extrusion protrusion 252 is fixedly mounted on the bottom of the first extrusion rod 251, a first U-shaped block 253 is rotatably mounted on the outside of the extrusion protrusion 252, a telescopic rod 254 is slidably mounted on the side of the first U-shaped block 253, an extrusion rotating block 255 is slidably mounted on the end of the telescopic rod 254, and the extrusion rotating block 255 is rotatably mounted on the upper part of the support block 263. Both ends of the extrusion rotating block 255 are provided with telescopic rods 254, away from the first U-shaped block 253. A second U-shaped block 256 is slidably installed on the side of the extrusion rotating block 255 at one end, and a second extrusion rod 257 is fixedly installed on the bottom end of the second U-shaped block 256. The bottom end of the second extrusion rod 257 is fixedly connected to the top of the annular block 264. The top of the first T-shaped block 261 is fixedly installed with a symmetrically arranged fifth fixed rod 2591, and the top of the fifth fixed rod 2591 is fixedly installed with a fourth fixed plate 259. The second extrusion rod 257 is slidably installed inside the fourth fixed plate 259, and the top of the fourth fixed plate 259 is fixedly installed with a first spring 258.

[0031] It should be noted that the support block 263 and the extrusion rotating block 255 form a seesaw-like structure. Therefore, when the first extrusion rod 251 descends, the second U-shaped block 256 can be driven to rise, thereby driving the second extrusion rod 257 to rise, and the bottom end of the second extrusion rod 257 is connected to the annular block 264, thereby achieving the function of adjusting the direction of the second T-shaped block 262 and the exhaust pipe port 15.

[0032] like Figure 9 As shown, a first fixing plate 21 is fixedly installed on the upper part of the first pipe 13, a second handle 228 is rotatably installed inside the first fixing plate 21, a fourth rotating rod 227 is provided on the outside of the second handle 228, and an adjusting gear 221 is provided on the top of the square rod 223, and the adjusting gear 221 is engaged with the fourth rotating rod 227.

[0033] It should be noted that in order to better adjust the direction of the exhaust pipe mouth 15 and ensure that the direction of the exhaust pipe mouth 15 does not change arbitrarily during the movement, a second handle 228 is provided inside the first fixed plate 21. The second handle 228 can be rotated to drive the second rotating block 225 to rotate and adjust the direction of the exhaust pipe mouth 15.

[0034] like Figures 4 to 6 As shown, the pipeline protrusion 141 is provided with a landslide that is concave inward, and the bottom of the third rotating block 226 is provided with a landslide with a uniformly decreasing height. The bottom of the third rotating block 226 contacts the top of the first extrusion rod 251.

[0035] It should be noted that when the second pipe 14 rises, the outer wall of the pipe protrusion 141 contacts the inner wall of the first pipe 13, thereby scraping off impurities and oil stains adhering to the inner wall of the first pipe 13 during the rise, and the pipe protrusion 141 is provided with a landslide that is concave inward, which can make the scraped impurities and oil stains fall downward and be discharged from the interior of the first pipe 13.

[0036] like Figure 4 As shown, a torsion spring is provided at the connection position between the cleaning rod 242 and the cleaning block 243 , and the maximum extended length of the cleaning block 243 is smaller than the inner diameter of the second pipe 14 .

[0037] It should be noted that when the gear ring 241 and the cleaning rod 242 are not rotating, they are in the state of Figure 4 state, and when the gear ring 241 and the cleaning rod 242 rotate, the cleaning block 243 can be driven to open, thereby cleaning the inner wall of the second pipe 14.

[0038] A power cable testing method, which uses the power cable detection device described above, includes the following steps: Step 1: Use a motor to drive the threaded rod 232 to rotate, and the threaded rod 232 drives the second pipe 14 to rise and fall. A ratchet gear 231 is provided on the top of the threaded rod 232, so that the gear ring 241 does not rotate until the second pipe 14 extends into the cable compartment. The relevant gas detector and fan inside the detection box 1 are started. The fan inside the detection box 1 draws air inward, so that the gas can be detected; Step 2: Rotate the second handle 228. The second handle 228 drives the adjusting gear 221 and the square rod 223 to rotate. The rotation of the square rod 223 drives the second rotating block 225 to rotate. The second rotating block 225 rotates and squeezes the first squeezing rod 251. The first squeezing rod 251 drives the second squeezing rod 257 to rise through the first U-shaped block 253 and the squeezing rotating block 255. The rising of the second squeezing rod 257 drives the annular block 264 to rise. The rising of the annular block 264 drives the sliding rod 265 to rotate along the top center of the second T-shaped block 262 to adjust the angle and direction of the external exhaust pipe port 15 of the second T-shaped block 262. Step 3: Adjust the fan inside the detection box 1 so that the fan inside the detection box 1 blows air outward, and then rotate the threaded rod 232 in the opposite direction. The threaded rod 232 drives the gear ring 241 to rotate through the ratchet gear 231 and the lifting gear 233. The rotation of the gear ring 241 causes the cleaning rod 242 to rotate. The rotation of the cleaning rod 242 causes the multiple cleaning blocks 243 to be subjected to centripetal force, driving the cleaning blocks 243 to extend and rotate around the gear ring 241 as the center of the circle. When the second pipe 14 rises, the interior of the second pipe 14 is cleaned.

[0039] The above describes the embodiments of this embodiment, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A power cable detection device, comprising a detection box (1), characterized in that: The detection box (1) is provided with a display (11) and a first handle (12); the lower part of the detection box (1) is connected to a lifting and adjusting device (2); the lower part of the lifting and adjusting device (2) is connected to a first pipe (13); a second pipe (14) is slidably installed inside the first pipe (13); the bottom of the second pipe (14) is connected to a bending pipe (17); an exhaust pipe opening (15) is fixedly installed at the bottom of the bending pipe (17); a filter screen (16) is fixedly installed at the bottom of the exhaust pipe opening (15); the detection box (1) is provided with a fan and related gas detectors; the lifting and adjusting device (2) is used to adjust the bending angle of the filter screen (16) and to clean the inside of the second pipe (14); The lifting and adjusting device (2) comprises an adjusting member (22), a lifting member (23), a cleaning member (24), an extruding member (25), and an angle rotating member (26). The bottom end of the detection box (1) is connected to a first pipe (13). The interior of the first pipe (13) is provided with an adjusting member (22) and a lifting member (23) symmetrically positioned. The interior of the first pipe (13) is rotatably installed with a cleaning member (24). The bottom of the adjusting member (22) is connected to an extruding member (25). The lower part of the extruding member (25) is connected to an angle rotating member (26). The lifting member (23) rotates to drive the cleaning member (24) to clean the inner wall of the second pipe (14). The adjusting member (22) rotates to drive the extruding member (25) to lift and adjust the angle of the angle rotating member (26). The bottom of the angle rotating member (26) is connected to the exhaust pipe opening (15) to drive the exhaust pipe opening (15) to adjust its angle.

2. The power cable detection device according to claim 1, characterized in that: The cleaning member (24) comprises a gear ring (241) rotatably mounted inside the first pipe (13); a cleaning rod (242) is fixedly mounted on the bottom of the gear ring (241); cleaning blocks (243) arranged in a circumferential array are rotatably mounted on the lower portion of the cleaning rod (242); and a plurality of cleaning brushes (244) are fixedly mounted on the ends of the cleaning blocks (243).

3. The power cable detection device according to claim 2, characterized in that: The lifting member (23) comprises a third fixing plate (234) fixedly mounted on the inner wall of the first pipe (13); a threaded rod (232) is rotatably mounted inside the third fixing plate (234); a ratchet gear (231) is fixedly mounted on the top of the threaded rod (232); a lifting gear (233) is fixedly mounted on the outer wall of the ratchet gear (231); the lifting gear (233) is connected to the gear ring (241); a pipe protrusion (141) is fixedly mounted on the top of the second pipe (14); and the outer wall of the threaded rod (232) is threadedly mounted inside the pipe protrusion (141).

4. The power cable detection device according to claim 3, characterized in that: The angle rotating member (26) includes a first T-shaped block (261) fixedly mounted on the lower part of the second pipe (14); a second T-shaped block (262) is rotatably mounted on the bottom of the first T-shaped block (261); an outer wall of the second T-shaped block (262) is connected to the exhaust pipe port (15); a sliding rod (265) is fixedly mounted on the upper side wall of the second T-shaped block (262); an annular block (264) is slidably mounted on the outer wall of the sliding rod (265); a limiting spring is arranged inside the annular block (264) and is connected to the sliding rod (265); a supporting block (263) is arranged on the top of the first T-shaped block (261); and the supporting block (263) is connected to the extrusion member (25).

5. The power cable detection device according to claim 4, characterized in that: The regulating member (22) comprises a second fixed plate (222) fixedly mounted on the inner wall of the upper portion of the first pipe (13); a square rod (223) is rotatably mounted inside the second fixed plate (222); a first rotating block (224) is slidably mounted on the outer wall of the square rod (223); the first rotating block (224) is rotatably mounted on the top of the pipe protrusion (141); a second rotating block (225) is fixedly mounted on the outer wall of the first rotating block (224); a third rotating block (226) is rotatably mounted inside the pipe protrusion (141); and the third rotating block (226) slides outside the square rod (223).

6. The power cable detection device according to claim 5, characterized in that: The extrusion member (25) comprises a first extrusion rod (251) slidably mounted inside the second pipe (14); an extrusion protrusion (252) is fixedly mounted on the bottom of the first extrusion rod (251); a first U-shaped block (253) is rotatably mounted on the outside of the extrusion protrusion (252); a telescopic rod (254) is slidably mounted on the side of the first U-shaped block (253); an extrusion rotating block (255) is slidably mounted on the end of the telescopic rod (254); the extrusion rotating block (255) is rotatably mounted on the upper part of the support block (263); and telescopic rods (254) are provided at both ends of the extrusion rotating block (255), away from the first U-shaped block (253). A second U-shaped block (256) is slidably mounted on the side of the extrusion rotating block (255) at one end, a second extrusion rod (257) is fixedly mounted on the bottom end of the second U-shaped block (256), the bottom end of the second extrusion rod (257) is fixedly connected to the top of the annular block (264), a symmetrically arranged fifth fixed rod (2591) is fixedly mounted on the top end of the first T-shaped block (261), a fourth fixed plate (259) is fixedly mounted on the top end of the fifth fixed rod (2591), the second extrusion rod (257) is slidably mounted inside the fourth fixed plate (259), and a first spring (258) is fixedly mounted on the top end of the fourth fixed plate (259).

7. The power cable detection device according to claim 6, characterized in that: A first fixing plate (21) is fixedly mounted on the upper portion of the first pipe (13); a second handle (228) is rotatably mounted inside the first fixing plate (21); a fourth rotating rod (227) is disposed outside the second handle (228); an adjusting gear (221) is disposed on the top of the square rod (223); and the adjusting gear (221) is engaged with the fourth rotating rod (227).

8. The power cable detection device according to claim 7, characterized in that: The pipeline protrusion (141) is provided with a landslide that is recessed inward, and the bottom of the third rotating block (226) is provided with a landslide with a uniformly decreasing height. The bottom of the third rotating block (226) contacts the top of the first extrusion rod (251).

9. The power cable detection device according to claim 8, characterized in that: A torsion spring is provided at the connection position between the cleaning rod (242) and the cleaning block (243), and the maximum extended length of the cleaning block (243) is smaller than the inner diameter of the second pipe (14).

10. A method for testing a power cable detection device according to claim 9, characterized in that: The following steps are involved: Step 1: Use a motor to drive the threaded rod (232) to rotate, and the threaded rod (232) drives the second pipe (14) to rise and fall. A ratchet gear (231) is provided on the top of the threaded rod (232), so that the gear ring (241) does not rotate until the second pipe (14) extends into the cable compartment. The relevant gas detector and fan inside the detection box (1) are started, and the fan inside the detection box (1) sucks air inward, so that the gas can be detected; Step 2: Rotate the second handle (228), the second handle (228) drives the adjusting gear (221) and the square rod (223) to rotate, the rotation of the square rod (223) drives the second rotating block (225) to rotate, the second rotating block (225) rotates and squeezes the first squeezing rod (251), the first squeezing rod (251) drives the second squeezing rod (257) to rise through the first U-shaped block (253) and the squeezing rotating block (255), the rising of the second squeezing rod (257) drives the annular block (264) to rise, the rising of the annular block (264) drives the sliding rod (265) to rotate along the top center of the second T-shaped block (262), and adjusts the angle and direction of the external exhaust pipe (15) of the second T-shaped block (262); Step 3: Adjust the fan inside the detection box (1) so that the fan inside the detection box (1) blows air outward, and then rotate the threaded rod (232) in the opposite direction. The threaded rod (232) drives the gear ring (241) to rotate through the ratchet gear (231) and the lifting gear (233). The rotation of the gear ring (241) causes the cleaning rod (242) to rotate. The rotation of the cleaning rod (242) causes the plurality of cleaning blocks (243) to be subjected to centripetal force, driving the cleaning blocks (243) to extend and rotate around the gear ring (241) as the center of the circle. When the second pipe (14) rises, the interior of the second pipe (14) is cleaned.

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