Device and method for rapidly detecting insulation performance of power cable

Abstract

The invention belongs to the technical field of cables, and particularly relates to a power cable insulation performance rapid detection device and method.The power cable insulation performance rapid detection device comprises a base, a mounting plate is fixedly connected to the upper surface of the base, a transverse plate is fixedly connected to the outer wall of the mounting plate, and a plurality of conducting rods are fixedly connected to the side, away from the mounting plate, of the transverse plate; a mounting frame is fixedly connected to the upper surface of the base, a baffle is fixedly connected to the inner wall of the mounting frame, and a gear motor is fixedly connected to the outer wall of the mounting frame. The cable winding and unwinding device can detect an insulating layer of a cable in the cable winding and unwinding process, defects in the insulating layer can be effectively detected, meanwhile, compressive strength testing can be conducted on the cable, and the cable winding and unwinding device is high in practicability. According to the cable insulation layer detection device, potential insulation layer defects can be found easily, detection personnel can be helped to find some potential insulation layer defects or defects difficult to find directly, such as tiny holes, cracks or bubbles, of the insulation layer, and the detection efficiency of the cable insulation layer detection device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of cables, and in particular relates to a device and method for quickly detecting insulation performance of a power cable. Background Art

[0002] A cable is made of one or more mutually insulated conductors and an outer insulating protective layer. The insulation of a cable refers to the performance of the cable insulation layer, which is mainly used to prevent current leakage between conductors and between conductors and the external environment, thereby ensuring safe and effective power transmission.

[0003] At present, during the process of testing the insulation of cables, when it is necessary to test the insulation layer of a longer cable, the insulation layer of the cable itself is relatively soft and is easily affected by factors such as layout, pressure and temperature before testing, resulting in uneven compression or force distribution between the insulation layers of the cable, and even the risk of rupture or breakdown of the insulation layer of the cable. In this case, the operator is required to retract and release the cable. This method not only takes a long time to test, but also easily causes interference and mutual influence between cables. It is not suitable for rapid cable testing. If these problems are not discovered or identified during the insulation performance test, the potential risk of subsequent cable failures or accidents may increase, thereby reducing the detection efficiency of the cable insulation performance testing device.

[0004] Therefore, a device and method for rapid detection of insulation performance of power cables are proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a device for quickly detecting the insulation performance of a power cable in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a rapid detection device and method for the insulation performance of a power cable, comprising a base, a mounting plate fixedly connected to the upper surface of the base, a transverse plate fixedly connected to the outer wall of the mounting plate, and a plurality of conductive rods fixedly connected to the other end of the transverse plate, a mounting frame fixedly connected to the upper surface of the base, and a baffle fixedly connected to the inner wall of the mounting frame, a reduction motor fixedly connected to the outer wall of the mounting frame, a first rotating rod connected to the inner wall of the mounting frame, the other end of the first rotating rod passes through the inner wall of the baffle and is fixedly connected to a winding disk, a cable groove is opened on the inner wall of the bottom end of the base, a cable is slidably arranged in the cable groove, a winding mechanism is arranged on the outer wall of the baffle, and a wiping mechanism is arranged on the upper surface of the base; The winding mechanism includes a limit rod fixedly connected to the outer wall of the baffle, the rod wall of the limit rod is fixedly connected to the limit frame, the inner walls on both sides of the limit frame are fixedly connected to the limit plates, and the inner walls of the limit plates are provided with circular through holes, and the inner wall of the bottom end of the base is provided with a detection mechanism.

[0007] In the above-mentioned rapid detection device for insulation performance of power cables, the detection mechanism includes a rotating motor fixedly connected to the inner wall of the bottom end of the base, a cable groove is provided on the inner wall of the top end of the base, and a cable clamp is fixedly connected to the inner wall of the bottom end of the cable groove, the output end of the rotating motor is fixedly connected to a vertical rod, and the upper surface of the vertical rod is fixedly connected to a winding roller, the inner wall of the bottom end of the base is provided with two symmetrical slide grooves, and the inner walls of the two slide grooves are slidably connected to a moving plate, the inner wall of the slide groove is fixedly connected to two symmetrical electric push rods, and the other ends of the two electric push rods are fixedly connected to the outer wall of the moving plate, the outer walls of the two moving plates are jointly fixedly connected to two symmetrical fixed frames, and a bearing plate is jointly fixedly connected between the outer walls of the two fixed frames, a plurality of evenly distributed cylinders are provided on the lower surface of the bearing plate, and the output ends of the cylinders are fixedly connected to stamping rods, the outer wall of the fixed frame is fixedly installed with a thermal imaging detection device, a U-shaped frame is fixedly installed on the upper surface of the base, and a resistance tester is fixedly installed on the upper surface of the U-shaped frame, and a telescopic insulating clamp is provided on the lower surface of the U-shaped frame.

[0008] In the above-mentioned rapid detection device for the insulation performance of power cables, the wiping mechanism includes two circular plates fixedly connected to the upper surface of the base, the inner walls of the bottom ends of the two circular plates are rotatably connected to a movable rod, the rod wall of the movable rod is fixedly connected to a cleaning block, and the outer wall of the cleaning block is fixedly connected to a plurality of evenly distributed soft brushes, the outer walls of the two movable rods are fixedly connected to a connecting plate through bearings, and the top ends of the two movable rods pass through the inner wall of the connecting plate, the outer walls of the top ends of the two movable rods are jointly fixedly connected to a first transmission assembly, and the top end of the vertical rod and the top end of one of the movable rods are jointly fixedly connected to a second transmission assembly.

[0009] In the above-mentioned rapid detection device for insulation performance of power cables, an electric heating block and a semiconductor refrigeration block are fixedly mounted on the upper surface of the base, and the output ends of the electric heating block and the semiconductor refrigeration block are fixedly connected with a conducting rod.

[0010] In the above-mentioned rapid detection device for the insulation performance of power cables, a PLC controller and an alarm light are fixedly installed on the outer wall of the mounting plate, a battery is fixedly installed on the upper surface of the horizontal plate, and the reduction motor, rotating motor, resistance tester, cylinder and thermal imaging detection equipment are all electrically connected to the PLC controller.

[0011] In the above-mentioned rapid detection device for the insulation performance of power cables, the multiple soft brushes are all made of insulating materials, the bottom inner wall of the cable trough is provided with multiple circular through holes, the lower surface of the base is fixedly connected with a collecting box, and the top inner wall of the collecting box is provided with through holes matching the size of the circular through holes.

[0012] The device and method for rapid detection of insulation performance of power cables include the following steps: S1. First, install one end of the cable on the outer wall of the reel, pass the other end of the cable through the circular through hole of the limit plate, and then place it in the cable trough in a straight line until the other end contacts the winding roller; S2, then start the rotating motor, which drives the winding roller to reel the cable, and start the resistance tester and thermal imaging detection equipment at the same time, and then apply voltage to the conductive rod to make it contact with the cable surface for voltage breakdown test, and at the same time, the punching rod can detect the compressive resistance of the insulation layer; S3. Then, through the wiping mechanism, when the cable is detected and retracted, the two transmission components can control the two soft brush layers so that the surface of the cable can be cleaned and wiped.

[0013] Compared with the existing technology, the advantages of the power cable insulation performance rapid detection device and method are: Through the winding mechanism, the cables can be arranged before testing, and the cables can be located between the cable troughs. Since the cables are in a straight state, the influence of the deadweight and bending of the insulation layer can be eliminated, so that the interference of external factors on performance testing is minimized. During testing, the performance of the insulation layer can be measured more accurately, and uneven force distribution between the cable insulation layers can be prevented, and the risk of rupture and breakdown of the cable insulation layer can be avoided. It is suitable for rapid testing of cable insulation layers.

[0014] Through the cable clamp, vertical rod, winding roller, cylinder, movable plate and detection mechanism, the cable is placed in the cable trough through the winding mechanism, so that it triggers the resistance tester to perform the first detection on the insulation layer of the cable. When the detection result is abnormal, the insulation layer of the cable will be clamped and fixed by the telescopic insulation clamp, and voltage will be applied to the insulation layer of the cable through the conductive rod. In conjunction with the thermal imaging detection equipment, the performance of the insulation layer of the cable is observed to see if it is qualified, which is conducive to discovering potential insulation layer defects and can help inspectors discover some potential or difficult-to-find defects in the insulation layer, such as tiny holes, cracks or bubbles, etc., thereby improving the detection efficiency of the insulation layer detection device of the cable.

[0015] By means of the movable rod, cleaning block, first transmission assembly, second transmission assembly, connecting plate and wiping mechanism, after the detection mechanism detects the insulation layer of the cable, the first transmission assembly and the second transmission assembly are driven to wipe the surface of the insulation layer of the subsequent cable, which can not only clean the surface dirt, oil or debris of the insulation layer of the cable, but also recycle the insulation layer of the cable after the detection is completed, prevent the accumulation of electric charge or local discharge, avoid interfering with the accurate test of the insulation layer performance, and eliminate these interference sources by cleaning the insulation layer, ensuring that the detection result is more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ; Figure 2 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention. Figure 1 ; Figure 3 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention. Figure 2 ; Figure 4 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention. Figure 3 ; Figure 5 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention. Figure 4 ; Figure 6 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the present invention. Figure 5 .

[0017] In the figure: 1 base, 2 mounting plate, 3 horizontal plate, 4 conductive rod, 5 mounting frame, 6 baffle, 7 winding mechanism, 71 limit rod, 72 limit frame, 73 limit plate, 8 detection mechanism, 81 rotating motor, 82 cable trough, 83 cable clamp, 84 vertical rod, 85 winding roller, 86 moving plate, 87 electric push rod, 88 fixed frame, 89 bearing plate, 891 cylinder, 892 punching rod, 893 thermal imaging detection equipment, 894 U-shaped frame, 895 resistance tester, 896 telescopic insulating clamp, 9 wiping mechanism, 91 round plate, 92 movable rod, 93 cleaning block, 94 soft brush, 95 connecting plate, 96 first transmission assembly, 97 second transmission assembly, 10 reduction motor, 11 first rotating rod, 12 winding reel, 13 battery, 14 warning light, 15 PLC controller, 16 conductive rod, 17 electric heating block, 18 semiconductor refrigeration block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figure 1-Figure 6As shown, a rapid detection device for insulation performance of a power cable comprises a base 1, a mounting plate 2 is fixedly connected to the upper surface of the base 1, a transverse plate 3 is fixedly connected to the outer wall of the mounting plate 2, and a plurality of conductive rods 4 are fixedly connected to the side of the transverse plate 3 away from the mounting plate 2, a mounting frame 5 is fixedly connected to the upper surface of the base 1, and a baffle 6 is fixedly connected to the inner wall of the mounting frame 5, a reduction motor 10 is fixedly connected to the outer wall of the mounting frame 5, a first rotating rod 11 is connected to the inner wall of the mounting frame 5, the other end of the first rotating rod 11 passes through the inner wall of the baffle 6, and is fixedly connected to a winding disk 12, a cable groove 82 is opened on the inner wall of the bottom end of the base 1, a cable is slidably arranged in the cable groove 82, a winding mechanism 7 is arranged on the outer wall of the baffle 6, and a wiping mechanism 9 is arranged on the upper surface of the base 1; The winding mechanism 7 includes a limit rod 71 fixedly connected to the outer wall of the baffle 6, the rod wall of the limit rod 71 is fixedly connected to the limit frame 72, the inner walls on both sides of the limit frame 72 are fixedly connected to the limit plate 73, and the inner wall of the limit plate 73 is provided with a circular through hole, and the inner wall of the bottom end of the base 1 is provided with a detection mechanism 8, which can make the cable be located between the cable grooves 82. Since the cable is in a straight state, the influence of the dead weight and bending of the insulating layer can be eliminated, so that the interference of external factors on the performance detection is minimized, and the performance of the insulating layer can be measured more accurately during the detection, so as to prevent uneven force distribution between the insulating layers of the cable, and avoid the risk of rupture and breakdown of the insulating layer of the cable. It is suitable for the rapid detection of the insulating layer of the cable.

[0020] The detection mechanism 8 includes a rotating motor 81 fixedly connected to the inner wall of the bottom end of the base 1, a cable groove 82 is provided on the inner wall of the top end of the base 1, and a cable clamp 83 is fixedly connected to the inner wall of the bottom end of the cable groove 82, the output end of the rotating motor 81 is fixedly connected to a vertical rod 84, and the upper surface of the vertical rod 84 is fixedly connected to a winding roller 85, the inner wall of the bottom end of the base 1 is provided with two symmetrical slide grooves, and the inner walls of the two slide grooves are slidably connected to a moving plate 86, the inner walls of the slide grooves are fixedly connected to two symmetrical electric push rods 87, and the other ends of the two electric push rods 87 are fixedly connected to the outer wall of the moving plate 86, the outer walls of the two moving plates 86 are jointly fixedly connected to two symmetrical fixed frames 88, and a bearing plate 89 is jointly fixedly connected between the outer walls of the two fixed frames 88, and a plurality of evenly distributed cylinders 891 are provided on the lower surface of the bearing plate 89, and the output ends of the cylinders 891 are fixedly connected to punching rods 892 A thermal imaging detection device 893 is fixedly installed on the outer wall of the fixed frame 88, a U-shaped frame 894 is fixedly installed on the upper surface of the base 1, and a resistance tester 895 is fixedly installed on the upper surface of the U-shaped frame 894, and a telescopic insulating clamp 896 is arranged on the lower surface of the U-shaped frame 894. The cable is placed in the cable trough through the winding mechanism 7, so that it triggers the resistance tester to perform the first detection on the insulation layer of the cable. When the detection result is abnormal, the insulation layer of the cable will be clamped and fixed by the telescopic insulating clamp 896, and a voltage will be applied to the insulation layer of the cable through the conductive rod 4. In conjunction with the thermal imaging detection device 893, the performance of the insulation layer of the cable is observed to be qualified, which is conducive to discovering potential insulation layer defects and can help detection personnel discover some potential or difficult-to-find defects in the insulation layer, such as tiny holes, cracks or bubbles, etc., thereby improving the detection efficiency of the insulation layer detection device of the cable.

[0021] The wiping mechanism 9 includes two circular plates 91 fixedly connected to the upper surface of the base 1, the inner walls of the bottom ends of the two circular plates 91 are rotatably connected to a movable rod 92, the rod wall of the movable rod 92 is fixedly connected to a cleaning block 93, and the outer wall of the cleaning block 93 is fixedly connected to a plurality of evenly distributed soft brushes 94, the outer walls of the two movable rods 92 are fixedly connected to a connecting plate 95 through a bearing, and the top ends of the two movable rods 92 pass through the inner wall of the connecting plate 95, the top outer walls of the two movable rods 92 are jointly fixedly connected to a first transmission assembly 97, the top outer wall of the vertical rod 84 and the movable rod 84 at the other end are fixedly connected to the first transmission assembly 97, and the top outer wall of the vertical rod 84 and the movable rod 84 at the other end are fixedly connected to the first transmission assembly 97. The top outer wall of the movable rod 92 is fixedly connected with the second transmission assembly 96. When the insulating layer of the cable is inspected by the inspection mechanism 7, the first transmission assembly 97 and the second transmission assembly 96 are driven to wipe the surface of the insulating layer of the subsequent cable. This can not only clean the surface dirt, oil or debris of the insulating layer of the cable, but also recycle the insulating layer of the cable after the inspection, prevent the accumulation of charge or local discharge, and avoid interfering with the accurate test of the performance of the insulating layer. By cleaning the insulating layer, these interference sources can be eliminated to ensure that the detection results are more accurate and reliable.

[0022] A device and method for quickly detecting the insulation performance of a power cable, comprising the following steps: S1. First, install one end of the cable on the outer wall of the take-up drum 12, pass the other end of the cable through the circular through hole of the limit plate 73, and then place it in the cable groove 82 in a straight line until the other end contacts the winding roller 85; S2, then start the rotating motor 81, which drives the winding roller 85 to reel the cable, and at the same time start the resistance tester 895 and the thermal imaging detection device 893, and then apply voltage to the conductive rod 4 to make it contact with the cable surface for voltage breakdown test, while the punching rod 892 can detect the compressive strength of the insulation layer; S3. Then, through the wiping mechanism 9, when the cable is being inspected and retracted, the two soft brushes 94 can be controlled by two transmission components to clean and wipe the surface of the cable.

[0023] The operating principle of the present invention is now described as follows: The moving direction of the cable is from the mounting frame 5 to the micro pump 15 .

[0024] When inspecting the insulation layer of the cable, the operator first places the cable to be inspected on the reel 12 inside the installation frame 5, winds it around the outer wall of the reel 12, passes the other end after winding through the circular through hole inside the limit plate 73 until it extends to the inside of the cable groove 82, and then winds the other end of the cable around the outer wall of the winding roller 85, and starts the reduction motor 10 and the rotating motor 81 at the same time, and drives the vertical rod 84 and the winding roller 85 to rotate by the rotating motor 81, so that the winding roller 85 winds and retracts the cable after inspection, and the reduction motor 10 drives the first rotating rod 11 to rotate, and the first rotating rod 11 drives the reel 12 to rotate, and the cable is wound back. The winding reel 12 can pull out the cable that needs to be tested later, and the cable can be limited by the limit plate 7. The bending degree of the cable can be reduced to prevent the insulation layer of the cable from escaping from the cable groove 82 during testing. The insulation layer of the cable can be arranged before testing, and the cable can be located between the cable grooves 82. Since the cable is in a straight state, the influence of the dead weight and bending of the insulation layer can be eliminated, so that the interference of external factors on performance testing is minimized, and the performance of the insulation layer can be measured more accurately during testing, and uneven force distribution between the insulation layers of the cable can be prevented. The risk of rupture and breakdown of the insulation layer of the cable is avoided, which is suitable for rapid testing of the insulation layer of the cable.

[0025] When the insulation layer of the cable is in the cable trough 82, first ensure the safety of the test instrument, cable and test environment, check whether the resistance tester 895 is working properly, ensure that the power supply is sufficient, and select the appropriate test voltage according to the test requirements, then connect the electrodes of the resistance tester 895 to the two ends of the cable to be tested, one of the electrodes is connected to the conductor of the cable, and the other is connected to the insulation layer, set the test instrument to the insulation resistance test mode, and select the appropriate test voltage range, start the battery 13 and the thermal imaging detection equipment 893 through the PLC controller 15, first set the test voltage to 1.5 times the insulation performance of the cable, and apply voltage to the inside of the conductive rod 4 from the battery 13. Since the conductive rod 4 is located directly above the cable trough 82 and extends to a height that contacts the surface of the cable's insulation layer, the cable will move in a limited position in the cable trough 82 during the winding movement, enabling it to contact the cable insulation layer, and then slowly Slowly increase the test voltage to the maximum, and at the same time start the telescopic insulating clamp 896 to clamp and fix the cable insulation layer to prevent it from shaking or shifting during detection. At the same time, start the electric push rod 87 and the cylinder 891, so that the electric push rod 87 pushes the movable plate 86 to slide back and forth inside the slide groove, so that it drives the fixed frame 88 to move, and then drives multiple punching rods 892 through the output end of the cylinder 891 to test the pressure resistance of the cable insulation layer. According to the specifications and requirements of the cable insulation layer, set the pressure parameters of the cylinder 891, including the pressure applied by the punching rod 892 and the time to maintain the pressure, etc. Start the cylinder 891 to drive the punching rod 892 to apply the set pressure to the surface of the cable insulation layer. According to needs, it may be necessary to continue to apply pressure for a period of time. Subsequently, the staff will check whether the surface of the cable insulation layer is damaged or other abnormal conditions occur to ensure that the surface of the cable after punching is flat and crack-free.

[0026] When the cable insulation layer cannot withstand the test voltage, the insulation layer may break down. At this time, the current will increase sharply, which will trigger the thermal imaging detection equipment 893, which will send instructions to the PLC controller 15 to cut off the power and trigger the alarm light 14 to remind the operator. The subsequent resistance tester 895 will display the measurement result, that is, the resistance value of the cable insulation layer, and record the measurement result. According to the test result, it is judged whether the cable insulation layer is leaking. If the resistance value is within a reasonable range, it means that the insulation layer is intact; if the resistance value is lower than expected, it may indicate that there is a leakage problem in the insulation layer. Subsequent data analysis can be carried out, which is conducive to discovering potential insulation layer defects. It can help inspectors find some potential or difficult-to-find defects in the insulation layer, such as tiny holes, cracks or bubbles, etc., thereby improving the detection efficiency of the cable insulation layer detection device.

[0027] After the performance test of the cable insulation layer is completed, during the process of winding and wrapping the cable by the rotating motor 81, the first transmission component 97 at the top of the vertical rod 84 drives a movable rod 92 to rotate synchronously. When the movable rod 92 rotates, the second transmission component 96 can drive another movable rod 92 to rotate, so that the two movable rods 92 drive two cleaning blocks 93 and the soft brush 94 to rotate. When the cable insulation layer is tested by the detection mechanism, the first transmission component 97 and the second transmission component 96 are driven to wipe the subsequent surface of the cable insulation layer. After the cable insulation layer is tested, the tested end of the cable insulation layer will be wound up by the winding roller, and the winding roller 85 and the wiping mechanism 9 are at the same height. At the same time, the cable insulation layer itself has a certain height and width, which can be wiped by the wiping mechanism 9. It can not only clean the surface dirt, oil or debris of the cable insulation layer, but also recycle the cable insulation layer after the test is completed, prevent the accumulation of charge or local discharge, and avoid interfering with the accurate test of the insulation layer performance. By cleaning the insulation layer, these interference sources can be eliminated to ensure that the test results are more accurate and reliable.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid detection device for the insulation performance of power cables, characterized in that: The invention comprises a base (1), wherein the upper surface of the base (1) is fixedly connected to a mounting plate (2), the outer wall of the mounting plate (2) is fixedly connected to a transverse plate (3), and a side of the transverse plate (3) away from the mounting plate (2) is fixedly connected to a plurality of conductive rods (4), the upper surface of the base (1) is fixedly connected to a mounting frame (5), and the inner wall of the mounting frame (5) is fixedly connected to a baffle (6), the outer wall of the mounting frame (5) is fixedly connected to a reduction motor (10), the inner wall of the mounting frame (5) is rotatably connected to a first rotating rod (11), the other end of the first rotating rod (11) passes through the inner wall of the baffle (6) and is fixedly connected to a winding reel (12), a cable groove (82) is provided on the inner wall of the bottom end of the base (1), a cable is slidably arranged in the cable groove (82), a winding mechanism (7) is provided on the outer wall of the baffle (6), and a wiping mechanism (9) is provided on the upper surface of the base (1); The winding mechanism (7) comprises a limit rod (71) fixedly connected to the outer wall of the baffle (6); the rod wall of the limit rod (71) is fixedly connected to the limit frame (72); the inner walls on both sides of the limit frame (72) are fixedly connected to the limit plates (73); the inner wall of the limit plates (73) is provided with a circular through hole; and the inner wall of the bottom end of the base (1) is provided with a detection mechanism (8).

2. The power cable insulation performance rapid detection device according to claim 1 is characterized in that: The detection mechanism (8) comprises a rotating motor (81) fixedly connected to the inner wall of the bottom end of the base (1); a cable groove (82) is provided on the inner wall of the top end of the base (1); and a cable clamp (83) is fixedly connected to the inner wall of the bottom end of the cable groove (82); an output end of the rotating motor (81) is fixedly connected to a vertical rod (84); and a winding roller (85) is fixedly connected to the upper surface of the vertical rod (84); two symmetrical sliding grooves are provided on the inner wall of the bottom end of the base (1); and a moving plate (86) is slidably connected to the inner walls of the two sliding grooves; two symmetrical electric push rods (87) are fixedly connected to the inner walls of the sliding grooves; and the other ends of the two electric push rods (87) are fixedly connected to the outer wall of the moving plate (86). The outer walls of the two movable plates (86) are fixedly connected to two symmetrical fixed frames (88); a bearing plate (89) is fixedly connected between the outer walls of the two fixed frames (88); a plurality of evenly distributed cylinders (891) are arranged on the lower surface of the bearing plate (89); and the output ends of the cylinders (891) are fixedly connected to punching rods (892); a thermal imaging detection device (893) is fixedly installed on the outer wall of the fixed frame (88); a U-shaped frame (894) is fixedly installed on the upper surface of the base (1); and a resistance tester (895) is fixedly installed on the upper surface of the U-shaped frame (894); and a telescopic insulating clamp (896) is arranged on the lower surface of the U-shaped frame (894).

3. The power cable insulation performance rapid detection device according to claim 2 is characterized in that: The wiping mechanism (9) comprises two circular plates (91) fixedly connected to the upper surface of the base (1); the inner walls of the bottom ends of the two circular plates (91) are rotatably connected to movable rods (92); the rod walls of the movable rods (92) are fixedly connected to cleaning blocks (93); and the outer walls of the cleaning blocks (93) are fixedly connected to a plurality of evenly distributed soft brushes (94); the outer walls of the two movable rods (92) are fixedly connected to connecting plates (95) via bearings; the top ends of the two movable rods (92) pass through the inner wall of the connecting plate (95); the outer walls of the top ends of the two movable rods (92) are fixedly connected to a first transmission assembly (97); and the top end of the vertical rod (84) and the top end of one of the movable rods (92) are fixedly connected to a second transmission assembly (96).

4. The power cable insulation performance rapid detection device according to claim 3 is characterized in that: An electric heating block (17) and a semiconductor refrigeration block (18) are respectively fixedly mounted on the upper surface of the base (1), and output ends of the electric heating block (17) and the semiconductor refrigeration block (18) are both fixedly connected to a conduction rod (16).

5. The power cable insulation performance rapid detection device according to claim 4, characterized in that: A PLC controller (15) and an alarm light (14) are fixedly mounted on the outer wall of the mounting plate (2); a storage battery (13) is fixedly mounted on the upper surface of the horizontal plate (3); and the reduction motor (10), the rotating motor (81), the resistance tester (895), the cylinder (891) and the thermal imaging detection device (893) are all electrically connected to the PLC controller (15).

6. The power cable insulation performance rapid detection device according to claim 7, characterized in that: The plurality of soft brushes (94) are all made of insulating material, the bottom inner wall of the cable trough (82) is provided with a plurality of circular through holes, the lower surface of the base (1) is fixedly connected with a collection box, and the top inner wall of the collection box is provided with through holes matching the size of the circular through holes.

7. A method for rapid detection of insulation performance of power cables, applied to a device for rapid detection of insulation performance of power cables as claimed in claim 8, characterized in that: The following steps are involved: S1. First, one end of the cable is mounted on the outer wall of the winding drum (12), and the other end of the cable is passed through the circular through hole of the limit plate (73), and then the cable is placed in a straight line inside the cable groove (82) until the other end contacts the winding roller (85); S2, then starting the rotating motor (81), the rotating motor (81) drives the winding roller (85) to reel the cable, while starting the resistance tester (895) and the thermal imaging detection device (893) at the same time, and then applying voltage to the conductive rod (4) so ​​that it contacts the surface of the cable to perform a voltage breakdown test, while the punching rod (892) can detect the compressive strength of the insulation layer; S3. Then, through the wiping mechanism (9), when the cable is being inspected and retracted, the two soft brushes (94) can be controlled by two transmission components so as to clean and wipe the surface of the insulation layer of the cable.

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