A cable insulation performance detection and repair device and method

Abstract

The application provides a cable insulation performance detection and repair device and method, which comprises a cable releasing device, a detection mechanism, a repair mechanism and a cable collecting device. The cable releasing device is used for releasing the cable to be detected smoothly. The detection mechanism is used for detecting the insulation performance of the cable and comprises a detection ring, a first driving device and a leakage detection device. The insulation defect is positioned by rotating the detection ring and obtaining a leakage current signal. The repair mechanism comprises a glue coating mechanism and a drying box. The glue coating mechanism is used for coating glue on the cable through a glue injection device and a glue coating device after detecting the damage point. The drying box accelerates the repair and solidifies the glue. The cable collecting device is used for collecting the repaired cable. The automation and cooperation of each mechanism in the device greatly improve the speed and quality of the cable insulation performance detection and repair, avoid the uneven repair and missed detection caused by improper operation or low efficiency in the traditional manual operation, and significantly improve the safety, reliability and construction efficiency before the cable construction.

Description

Technical Field

[0001] This invention relates to the field of cable insulation performance testing technology, and in particular to a cable insulation performance testing and repair device and method. Background Technology

[0002] In power transmission lines, cables are the primary power transmission materials. Their structure typically consists of, from the inside out, a conductor, an insulation layer, an inner sheath, an outer sheath, and an armor layer. The insulation performance of cables is crucial for safe power transmission. However, current cable insulation performance testing and repair technologies have significant limitations and shortcomings.

[0003] Typically, after cables are transported to the construction site, workers directly lay them without prior insulation testing. However, due to the large quantity of cables, damage is inevitable during transportation or at the factory, causing them to lose their proper insulation performance. Laying cables with damage can lead to serious safety hazards. If damage occurs during normal operation after installation, it can cause electrical leakage, endangering the safety of construction workers and requiring re-inspection and repair, resulting in a significant waste of manpower and resources.

[0004] Currently, cable insulation performance testing typically involves applying a high-voltage DC current to both ends of the cable, with a manual operator sliding a test ring along the cable to detect leakage current or changes in the electric field, thereby pinpointing insulation damage points. When insulation damage is detected, current technology still primarily relies on manual repair. This method is not only inefficient but also particularly cumbersome and time-consuming in large-scale cable laying projects. Furthermore, human error during manual repair can lead to inconsistent repair quality, further increasing maintenance costs and safety risks.

[0005] Therefore, how to achieve efficient and reliable cable insulation performance testing and timely repair at construction sites has become an urgent technical problem to be solved. Summary of the Invention

[0006] In view of this, the present invention proposes a cable insulation performance testing and repair device and method to solve the problem that the current cable insulation performance testing and immediate damage repair cannot be efficiently achieved before cable construction.

[0007] The technical solution of this invention is implemented as follows:

[0008] On one hand, the present invention provides a cable insulation performance testing and repair device, comprising:

[0009] Cable release device, used to release the cable to be inspected;

[0010] The testing mechanism is set on one side of the cable laying device and is used to test the insulation performance of the cable released by the cable laying device. The testing mechanism includes a first fixed frame and a testing ring, a first driving device and a leakage current detection device set on the first fixed frame. A first mounting hole is opened on the side wall of the first fixed frame. The testing ring is set at the first mounting hole. The first driving device is used to drive the testing ring to rotate on the outer surface of the cable. The leakage current detection device is used to obtain the leakage current signal on the testing ring.

[0011] A repair mechanism, located on the side of the detection mechanism away from the cable laying device, is used to repair cable insulation layer faults when a leakage current signal is received. The repair mechanism includes a gluing mechanism and a drying chamber. The gluing mechanism is located between the detection mechanism and the drying chamber. The gluing mechanism includes a second fixed frame and a gluing device, a glue injection device, and a second driving device mounted on the second fixed frame. The side wall of the second fixed frame has a second mounting hole coaxial with the first mounting hole. The gluing device includes a clamping assembly and multiple gluing parts, which are evenly surrounding the second mounting hole. The clamping assembly is used to drive the gluing parts to clamp the outer wall of the cable. The glue injection device is used to apply glue to the outer wall of the cable through the gluing parts. The second driving device is used to drive the gluing device to rotate. The drying chamber is used to dry the glued cable.

[0012] The cable retrieval device is located on the side of the repair mechanism away from the inspection mechanism and is used to retrieve the repaired cable.

[0013] Based on the above technical solution, preferably, the detection ring includes a plurality of arc-shaped plates uniformly surrounding the first mounting hole, and the detection mechanism further includes a first adjustment device disposed on the front side of the first fixed frame, for driving the plurality of arc-shaped plates to open or close synchronously, and a first driving device for driving the first adjustment device to rotate around the first mounting hole, and the first adjustment device includes an annular support plate, an annular fixed plate, an annular gear plate, a positioning rod, a driven gear and a driving gear.

[0014] The annular support disk is coaxially rotatably disposed at the first mounting hole. The number of positioning rods is the same as the number of arc plates. One end of the positioning rod is slidably disposed on the surface of the annular support disk, and the other end is connected to the arc plate. The side wall of the positioning rod is provided with a first tooth.

[0015] The number of driven gears is the same as the number of positioning rods. The driven gears are rotatably mounted on the annular support plate and are located on one side of the corresponding positioning rod and mesh with the first tooth. The annular toothed plate is horizontally mounted above the positioning rod, and the inner teeth of the annular toothed plate mesh with multiple driven gears.

[0016] The annular fixed disk is located outside the annular toothed disk and is fixedly connected to the annular support disk. The drive gear is rotatably positioned between the annular fixed disk and the annular support disk, and the drive gear meshes with the outer teeth of the annular toothed disk. The central shaft of the drive gear moves through the outside of the annular fixed disk and is connected to an adjustment knob.

[0017] Based on the above technical solution, preferably, the inner wall of the arc-shaped plate is provided with multiple rollers that rotate uniformly around the central axis of the first mounting hole. The axial direction of the rollers is parallel to the axial direction of the first mounting hole. A floating component is also provided between the arc-shaped plate and the positioning rod. The floating component includes a first elastic element, a connecting rod, and a connecting plate. The connecting plate is vertically fixed to one end of the positioning rod facing the arc-shaped plate. One end of the connecting rod is fixedly connected to the outer wall of the arc-shaped plate, and the other end moves through the connecting plate and is connected to a limiting part. The first elastic element is sleeved on the connecting rod between the connecting plate and the arc-shaped plate.

[0018] The first cylinder is fixedly installed at the center of the side of the annular support plate away from the annular fixed plate. The first cylinder passes through the first mounting hole and extends to the rear side of the first fixing frame. The leakage detection device includes a conductive rod, a second elastic element, and a controller. A slot is opened on the rear side of the first fixing frame. The conductive rod is slidably installed in the slot. The second elastic element is installed in the slot. The two ends of the second elastic element abut against one end of the conductive rod and the inner wall of the mounting slot, respectively. The other end of the conductive rod passes through the slot and abuts against the outer wall of the first cylinder. The conductive rod is electrically connected to the controller. The first fixing frame is made of insulating material. The annular support plate, the first cylinder, the positioning rod, the floating component, the arc plate, and the roller are all made of conductive material.

[0019] Based on the above technical solution, preferably, the first driving device includes a first motor and a first gear, the outer peripheral wall of the annular support disk is provided with a second tooth, the first gear is rotatably disposed on the front side of the first fixed frame and meshes with the second tooth, the first motor is fixedly disposed on the side of the first fixed frame away from the first adjusting device, and the output shaft of the first motor passes through the first fixed frame and is fixedly connected to the first gear.

[0020] Based on the above technical solution, preferably, the clamping assembly includes a first annular mounting plate, a second annular mounting plate, a rotating sleeve, a second gear, a second motor, a first slip ring, a first mounting bracket, and a second mounting bracket;

[0021] The first annular mounting plate is rotatably disposed on the front side of the second fixed frame and coaxial with the second mounting hole. The second driving device is disposed on the rear side of the second fixed frame and is used to drive the first annular mounting plate to rotate.

[0022] The second annular mounting plate is coaxially rotatably disposed on the side of the first annular mounting plate away from the second fixed frame. The outer wall of the second annular mounting plate is evenly provided with mounting grooves equal in number to the number of adhesive parts. The mounting grooves penetrate the inner wall of the second annular mounting plate. The outer wall of the second annular mounting plate is provided with a third tooth.

[0023] The adhesive-coating component includes a rod and an adhesive-coating part. The adhesive-coating part is located inside the second annular mounting plate and is circular in shape. One end of the rod is fixedly connected to the adhesive-coating part, and the other end passes horizontally through the mounting groove and is rotatably connected to the first annular mounting plate. A rotating sleeve is fitted on the outside of the rod and rotatably disposed in the mounting groove. The rod can slide relative to the rotating sleeve.

[0024] The first mounting bracket is fixedly mounted on the first annular mounting plate, and the second motor is fixedly mounted on the first mounting bracket. The output shaft of the second motor is connected to the third gear through a second gear meshing with the third gear. The second mounting bracket is fixedly mounted on the front side of the second mounting bracket. A wire hole coaxial with the second mounting hole is opened on the second mounting bracket. The first slip ring is fixedly mounted in the wire hole and is slidably connected to the electrode of the second motor.

[0025] Based on the above technical solution, preferably, the glue injection device includes a glue injection pressure vessel, a sealing ring, and a hollow rod. An annular groove is formed on the outer peripheral wall of the second fixed frame. The sealing ring is fixedly disposed on the front side of the second fixed frame and is sleeved on the outer peripheral side of the first annular mounting plate, and is rotatably and sealingly connected with the annular groove. The glue injection pressure vessel is fixedly disposed on the top surface of the second fixed frame. The glue injection port of the glue injection pressure vessel passes through the sealing ring and is connected to the annular groove. The hollow rod is vertically fixed to the surface of the first annular mounting plate and is connected to the annular groove. The side of the rod away from the glue coating part is rotatably and sealingly connected to the hollow rod. A cavity is provided inside the glue coating part. A glue inlet hole connected to the cavity is formed on the outer peripheral wall of the hollow rod. Multiple glue outlet holes are formed on the side of the glue coating part facing the second mounting hole.

[0026] Based on the above technical solution, preferably, a second cylinder is fixedly installed at the center of the side of the first annular mounting plate away from the second annular mounting plate. The outer peripheral wall of the second cylinder is provided with a fourth tooth. The second cylinder passes through the second mounting hole and extends to the rear side of the second fixed frame. The second driving device includes a third motor and a third gear. The third motor is fixedly installed on the second fixed frame. The output shaft of the third motor is connected to the fourth tooth through the third gear.

[0027] Based on the above technical solution, preferably, it also includes a cleaning mechanism, which is set on the side of the detection mechanism away from the repair mechanism, including a third fixing frame, a mounting cylinder, an arc-shaped clamp, a second adjustment device and a third driving device;

[0028] The third fixing frame has a third mounting hole coaxial with the first mounting hole on its side wall. The mounting cylinder is horizontally rotatably installed in the third mounting hole. There are two arc-shaped clamps, which are coaxially installed inside the mounting cylinder. The inner side wall of the arc-shaped clamps is provided with bristles.

[0029] The second adjustment device is located between the arc-shaped clamp and the mounting cylinder, and includes a guide rod and an adjustment screw. One end of the adjustment screw is rotatably connected to the outer wall of the arc-shaped clamp in the radial direction, and the other end passes vertically upward through the mounting cylinder and is threadedly connected to the mounting cylinder. Two guide rods are provided, which are symmetrically arranged on both sides of the adjustment screw along the axial direction of the arc-shaped clamp. One end of the guide rod is fixedly connected to the arc-shaped clamp, and the other end moves vertically upward through the mounting cylinder.

[0030] The third drive unit is located on the rear side of the third fixed frame and is used to drive the mounting cylinder to rotate the arc-shaped clamping plate.

[0031] Based on the above technical solution, preferably, it also includes a base plate, on which the cleaning mechanism, detection mechanism and repair mechanism are sequentially and fixedly arranged at intervals. A conveyor roller is also provided on the side of the cleaning mechanism away from the detection mechanism. The cable laying device and the cable taking device have the same structure, both including a cable laying frame, a cable reel and a second slip ring. The cable reel is rotatably mounted on the cable laying frame. The rotating part of the second slip ring is fixedly connected to the rotating shaft of the cable reel. The fixed part of the second slip ring is fixedly connected to the cable laying frame. One end of the cable is used for electrical connection through the rotating shaft and the rotating part of the second slip ring. The fixed part of the second slip ring is used for receiving electricity.

[0032] Secondly, the present invention also discloses a method for testing and repairing cable insulation performance, which utilizes the cable insulation performance testing and repair device described in the first aspect, and includes the following steps:

[0033] S1. Pass the free end of the cable to be tested on the cable laying device through the detection mechanism and the repair mechanism in sequence and connect it with the cable taking device.

[0034] S2. Pass current through both ends of the cable and make the cable move horizontally toward the cable receiving device;

[0035] S3. The first driving device drives the detection ring to rotate on the outer surface of the cable. When the leakage current detection device detects a leakage current signal on the detection ring, it records the fault point of the cable insulation layer.

[0036] S4. When the cable insulation layer fault point is located at the repair mechanism, the first drive device stops operating, the cable stops transmitting, the clamping assembly drives multiple glue applicators to clamp the outer wall of the cable, the glue injection device applies glue to the outer wall of the cable through the glue applicators, and the second drive device drives the glue applicator to rotate so that the glue applicators apply glue evenly to the outer wall of the cable.

[0037] S5. After the adhesive is applied, the coated part is disconnected from the cable, and the cable continues to transmit. When the coated cable is transmitted to the drying box, the cable at the coated part is baked in the drying box to cure the adhesive.

[0038] S6. The repaired cable is then coiled and retrieved using a cable collection device, thus completing the cable insulation performance test and repair.

[0039] The present invention has the following advantages over the prior art:

[0040] (1) The cable insulation performance testing and repair device disclosed in this invention achieves smooth cable release through a cable release device. Combined with the detection ring and leakage current detection device in the testing mechanism, it can accurately detect the location of damage to the cable insulation layer and acquire leakage current signals in real time, thereby locating insulation defects. The rotation of the detection ring and the high-precision measurement of the leakage current detection device ensure no blind spots on the cable surface, improving testing efficiency and accuracy. The repair mechanism, through an automated glue injection and coating device, can quickly and evenly apply glue to the damaged area of ​​the cable insulation layer after detecting the damage point, and uses a drying oven to accelerate the repair process, ensuring glue curing and restoring the cable's insulation performance. The automation and collaborative work of all mechanisms in the entire device greatly improves the speed and quality of cable insulation performance testing and repair, avoiding uneven repair or missed detection problems caused by improper operation or low efficiency in traditional manual operations, significantly improving the safety, reliability, and construction efficiency before cable construction.

[0041] (2) By setting the detection ring as multiple arc-shaped plates evenly surrounding the first mounting hole, and adjusting the relative position of the arc-shaped plates through the first adjusting device, it can adapt to cables of different diameters. This structural design allows the detection mechanism to flexibly handle cables of different specifications without the need to replace detection rings of different sizes, greatly improving the versatility and ease of operation of the equipment.

[0042] (3) By setting rollers on the inner wall of the arc plate, the friction between the arc plate and the cable surface can be reduced. With the floating component, when the cable surface is not completely flat, the arc plate can make fine adjustments according to the shape change of the cable under the action of the first elastic element, maintain uniform contact pressure, and improve the detection accuracy. (4) By setting a cavity inside the glue coating component, the rod part of the glue coating component is rotatably sealed to the hollow rod. At the same time, the cavity of the glue coating component, the hollow rod, and the annular groove establish glue flow channels, so that the glue can always flow through the above flow channels during the rotation of the entire clamping component, thereby achieving uniform application of glue to the outer wall of the cable.

[0043] (5) The cleaning mechanism can remove contaminants such as dust and impurities from the outer wall of the cable, preventing them from affecting the testing process and avoiding dust and impurities from affecting subsequent adhesive application operations. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a three-dimensional structural schematic diagram of the cable insulation performance testing and repair device disclosed in this invention;

[0046] Figure 2 This is a schematic diagram of the front three-dimensional structure of the detection mechanism disclosed in this invention;

[0047] Figure 3 This is a schematic diagram of the rear three-dimensional structure of the detection mechanism disclosed in this invention;

[0048] Figure 4 This is a three-dimensional structural schematic diagram of the first adjusting device disclosed in this invention;

[0049] Figure 5 Figure 4 Enlarged view of a portion of point A in the middle;

[0050] Figure 6 This is a three-dimensional structural schematic diagram of the adhesive coating mechanism disclosed in this invention;

[0051] Figure 7 This is a three-dimensional structural diagram of the glue application device and glue dispensing device disclosed in this invention;

[0052] Figure 8 This is a three-dimensional structural schematic diagram of the second driving device disclosed in this invention;

[0053] Figure 9 This is an exploded view of the adhesive coating mechanism disclosed in this invention;

[0054] Figure 10 A schematic diagram of the planar structure of the adhesive application mechanism disclosed in this invention;

[0055] Figure 11 for Figure 10 Plan view at point BB;

[0056] Figure 12 This is a schematic diagram of the front three-dimensional structure of the cleaning mechanism disclosed in this invention;

[0057] Figure 13 This is a three-dimensional structural diagram of the rear side of the cleaning mechanism disclosed in this invention;

[0058] Figure label:

[0059] 1. Cable laying device; 11. Cable laying frame; 12. Cable reel; 13. Second slip ring; 4. Cable winding device;

[0060] 2. Testing mechanism; 21. First fixing frame; 211. First mounting hole; 212. Slot;

[0061] 22. Detection ring; 221. Arc plate; 2210. Roller;

[0062] 23. First drive unit; 231. First motor; 232. First gear;

[0063] 24. Leakage detection device; 241. Conductive rod; 242. Second elastic element; 243. Controller;

[0064] 25. First adjusting device; 251. Annular support plate; 252. Annular fixed plate; 253. Annular gear plate; 254. Positioning rod; 255. Driven gear; 256. Drive gear; 2541. First tooth; 2561. Adjusting knob; 2511. Second tooth;

[0065] 26. Floating component; 261. First elastic element; 262. Connecting rod; 263. Connecting plate; 2621. Limiting part; 2512. First cylinder;

[0066] 3. Repair mechanism; 31. Glue application mechanism; 32. Drying oven; 33. Second fixing frame; 331. Second mounting hole;

[0067] 34. Glue application device; 341. Clamping assembly; 3411. First annular mounting plate; 3411a. Annular groove; 3411b. Second cylinder; 3411c. Fourth tooth; 3412. Second annular mounting plate; 3412a. Mounting groove; 3412b. Third tooth; 3413. Rotating sleeve; 3414. Second gear; 3415. Second motor; 3416. First slip ring; 3417. First mounting bracket; 3418. Second mounting bracket;

[0068] 342. Glue-applied part; 3421. Rod; 3422. Glue-applied part; 3420. Cavity; 3423. Glue outlet;

[0069] 35. Glue injection device; 351. Glue injection pressure vessel; 352. Sealing ring; 353. Hollow rod; 3531. Glue inlet hole;

[0070] 36. Second drive unit; 361. Third motor; 362. Third gear;

[0071] 5. Cleaning mechanism; 51. Third fixing frame; 511. Third mounting hole; 52. Mounting cylinder; 53. Arc-shaped clamp; 54. Second adjusting device; 55. Third driving device; 56. Brush bristles; 541. Guide rod; 542. Adjusting screw;

[0072] 6. Base plate; 7. Conveyor rollers. Detailed Implementation

[0073] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0074] like Figure 1 As shown, combined with Figure 2-11 The present invention discloses a cable insulation performance testing and repair device, including a cable laying device 1, a testing mechanism 2, a repair mechanism 3, and a cable collection device 4.

[0075] The cable release device 1 is used to release the cable to be tested, ensuring that the cable can be smoothly tested and repaired.

[0076] The testing mechanism 2, located on one side of the cable-laying device 1, is used to test the insulation performance of the cable released by the cable-laying device 1, mainly including the detection of insulation layer damage. Its main structure includes a first fixing frame 21 and a testing ring 22, a first driving device 23, and a leakage current detection device 24, all mounted on the first fixing frame 21.

[0077] The first fixing frame 21 supports and fixes the detection ring 22 and other related components to ensure their stability during operation. The first fixing frame 21 has a first mounting hole 211 on its side wall, which is used for the detection ring 22 to be installed and for the cable to pass through.

[0078] The detection ring 22 is positioned at the first mounting hole 211 and is used to directly contact the cable surface to acquire information about the electric field on the cable's outer surface. By detecting changes in the electric field on the cable surface, it can determine whether there is any damage to the insulation layer. By detecting the electric field or leakage signals, the location of any damage to the cable insulation layer can be accurately detected.

[0079] The first driving device 23 drives the detection ring 22 to rotate on the outer surface of the cable, ensuring comprehensive inspection of the cable's outer surface by the detection ring 22. Through rotation, the detection ring 22 covers the entire surface of the cable, preventing missed detections. The rotation process improves inspection efficiency while ensuring uniformity of inspection.

[0080] The leakage current detection device 24 is used to acquire the leakage current signal on the detection ring 22. When the detection ring 22 is in contact with the cable, the leakage current detection device 24 can monitor and acquire the leakage current signal in real time and acquire the fault location of the cable insulation layer so as to transmit the signal to the subsequent repair mechanism 3 and wait for the repair mechanism 3 to perform the repair operation on the fault point.

[0081] Repair mechanism 3, located on the side of detection mechanism 2 away from cable laying device 1, is used to repair cable insulation layer faults when a leakage current signal is received. Repair mechanism 3 includes gluing mechanism 31 and drying chamber 32, with gluing mechanism 31 located between detection mechanism 2 and drying chamber 32. Glue application mechanism 31 is responsible for applying glue to the damaged areas of cable insulation layer, and drying chamber 32 is used to dry the glued cable, allowing the repaired insulation layer to harden rapidly and restore the cable's insulation performance.

[0082] The glue application mechanism 31 includes a second fixed frame 33 and a glue application device 34, a glue injection device 35 and a second drive device 36 disposed on the second fixed frame 33.

[0083] The second mounting bracket 33 has a second mounting hole 331 on its side wall, which is coaxial with the first mounting hole 211. The second mounting bracket 33 is similar to the first mounting bracket 21, providing stable support. The second mounting hole 331 is used to install the adhesive applicator 34 and also allows the cable to pass through.

[0084] The adhesive application device 34 includes a clamping assembly 341 and multiple adhesive application parts 342. The multiple adhesive application parts 342 are evenly surrounding the second mounting hole 331. The clamping assembly 341 is used to drive the adhesive application parts 342 to clamp the outer wall of the cable. When the cable passes through the second mounting hole 331, the clamping assembly 341 holds the multiple adhesive application parts 342 against the outer wall of the cable. The adhesive injection device 35 is used to apply adhesive to the outer wall of the cable through the adhesive application parts 342. The second driving device 36 is used to drive the adhesive application device 34 to rotate. By rotating the adhesive application device 34, the adhesive application parts 342 can evenly apply adhesive along the outer perimeter of the cable at the cable damage point, ensuring that the adhesive is fully applied to the repaired part without leaving any dead corners. After the adhesive application at the cable damage point is completed, the clamping assembly 341 can drive the adhesive application parts 342 to separate from the cable, thereby preventing the adhesive from adhering to other parts of the cable.

[0085] The cable retrieval device 4 is located on the side of the repair mechanism 3 away from the detection mechanism 2. It is used to organize and retrieve the repaired cable to ensure that the repaired cable can be successfully used for construction.

[0086] The cable insulation performance testing and repair device disclosed in this invention achieves smooth cable release through the cable release device 1. Combined with the detection ring 22 and leakage current detection device 24 in the detection mechanism 2, it can accurately detect the location of damage to the cable insulation layer and acquire leakage current signals in real time, thereby locating insulation defects. The rotation of the detection ring 22 and the high-precision measurement of the leakage current detection device 24 ensure no blind spots on the cable surface, improving detection efficiency and accuracy. The repair mechanism 3, through an automated glue injection and coating device 34, can quickly and evenly apply glue to the damaged area of ​​the cable insulation layer after detecting the damage point, and uses a drying oven 32 to accelerate the repair process, ensuring glue curing and restoring the cable's insulation performance. The automation and collaborative work of all mechanisms in the entire device greatly improves the speed and quality of cable insulation performance testing and repair, avoiding the problems of uneven repair or missed detection caused by improper operation or low efficiency in traditional manual operation, and significantly improving the safety, reliability, and construction efficiency before cable construction.

[0087] During operation, the detection ring 22 needs to be in continuous contact with the outer wall of the cable, and the inner diameter of the detection ring 22 also needs to match the outer diameter of the cable. As a result, the inner diameter of the detection ring 22 becomes a fixed value, which means that the detection ring 22 can only adapt to cables of one diameter, which has certain limitations. In order to solve the above problems, the present invention proposes the following solution.

[0088] Specifically, as some preferred embodiments, please refer to the appendix. Figure 2-5 As shown, the detection ring 22 includes multiple arc-shaped plates 221 evenly surrounding the first mounting hole 211. These arc-shaped plates 221 can surround the outer periphery of the cable. The detection mechanism 2 in this embodiment also includes a first adjusting device 25 on the front side of the first fixing frame 21, used to drive the multiple arc-shaped plates 221 to open or close synchronously. Specifically, the function of the first adjusting device 25 is to adjust the relative positions of the arc-shaped plates 221 to accommodate cables of different diameters. This structural design allows the detection mechanism 2 to flexibly handle cables of different specifications without requiring replacement of detection rings 22 of different sizes, greatly improving the versatility and ease of operation of the equipment.

[0089] See attached document Figure 4 As shown, the first adjustment device 25 in this embodiment includes an annular support plate 251, an annular fixed plate 252, an annular gear plate 253, a positioning rod 254, a driven gear 255, and a drive gear 256.

[0090] The annular support plate 251 is coaxially rotatably mounted at the first mounting hole 211. The number of positioning rods 254 is the same as the number of arc plates 221. One end of the positioning rod 254 is slidably mounted on the surface of the annular support plate 251, and the other end is connected to the arc plate 221. The side wall of the positioning rod 254 is provided with a first tooth 2541. The positioning rod 254 is horizontally mounted along the radial direction of the annular support plate 251. By sliding the positioning rod 254 horizontally on the annular support plate 251, the distance between the arc plate 221 and the center of the first mounting hole 211 can be adjusted.

[0091] The number of driven gears 255 is the same as the number of positioning rods 254. The driven gears 255 are rotatably mounted on the annular support plate 251 and located on one side of the corresponding positioning rod 254, meshing with the first tooth 2541. The annular gear plate 253 is horizontally positioned above the positioning rods 254, and its internal teeth mesh with multiple driven gears 255. The rotation of the annular gear plate 253 synchronously drives the multiple driven gears 255 to rotate. The driven gears 255, through the first tooth 2541, drive the positioning rods 254 to move horizontally, ensuring that the multiple positioning rods 254 extend and retract synchronously. This, in turn, adjusts the opening and closing size of the multiple arc-shaped plates 221 to accommodate the detection of cables of different diameters.

[0092] An annular fixed disk 252 is located outside the annular gear disk 253 and is fixedly connected to the annular support disk 251. A drive gear 256 is rotatably positioned between the annular fixed disk 252 and the annular support disk 251, and the drive gear 256 meshes with the external teeth of the annular gear disk 253. The central shaft of the drive gear 256 movably passes through the outside of the annular fixed disk 252 and is connected to an adjustment knob 2561. Rotating the adjustment knob 2561 directly controls the rotation of the drive gear 256, thereby adjusting the opening and closing size of the arc-shaped plates 221. The adjustment knob 2561 improves the convenience and accuracy of the adjustment process. In this embodiment, after the cable passes through the detection mechanism 2 and the repair mechanism 3 and is connected to the receiving device, the length of the extended arc-shaped plates 221 is adjusted by operating the adjustment knob 2561 using gear mechanical transmission, thereby ensuring that the inner wall of the arc-shaped plates 221 can contact the outer wall of the cable.

[0093] Since there are gaps between the multiple arc plates 221, the first adjustment device 25 is driven by the first driving device 23 to rotate around the first mounting hole 211, so that the multiple arc plates 221 can make contact with the cable without dead angles during the rotation, thereby improving the reliability of the detection.

[0094] Since the inner wall of the arc plate 221 and the outer wall of the cable are in surface-to-surface contact, friction between the inner wall of the arc plate 221 and the outer wall of the cable during rotation can damage the cable insulation layer. Therefore, the present invention also adopts the following technical solution to solve this problem.

[0095] See attached document Figure 4 and 5 As shown, in this embodiment, multiple rollers 2210 are evenly rotatably arranged along the central axis of the first mounting hole 211 on the inner wall of the arc-shaped plate 221. The axial direction of the rollers 2210 is parallel to the axial direction of the first mounting hole 211. The rollers 2210 are arranged on the inner wall of the arc-shaped plate 221, and their main function is to reduce the friction between the arc-shaped plate 221 and the cable surface. By rolling rather than directly contacting the cable, the rollers 2210 can effectively reduce the risk of wear on the cable insulation layer and protect the cable from damage. In addition, the arrangement of the rollers 2210 can also ensure that the arc-shaped plate 221 maintains uniform contact pressure during the testing process, thereby improving the accuracy of the testing.

[0096] Because the cable insulation layer is produced using an extrusion process, its outer surface is not completely smooth, but has certain depressions or protrusions. To ensure that the roller 2210 can fully contact the cable's outer surface, this embodiment also includes a floating assembly 26 between the arc-shaped plate 221 and the positioning rod 254. The floating assembly 26 includes a first elastic element 261, a connecting rod 262, and a connecting plate 263. The connecting plate 263 is vertically fixed to one end of the positioning rod 254 facing the arc-shaped plate 221. One end of the connecting rod 262 is fixedly connected to the outer wall of the arc-shaped plate 221, and the other end movably passes through the connecting plate 263 and connects to a limiting part 2621. The first elastic element 261 is sleeved on the connecting rod 262 between the connecting plate 263 and the arc-shaped plate 221. Therefore, when the cable surface is not completely flat, the arc-shaped plate 221 can make minor adjustments according to the shape of the cable under the action of the first elastic element 261, maintaining uniform contact pressure and improving detection accuracy.

[0097] To enable the leakage current detection device 24 to detect leakage current in the detection ring 22, refer to the attached document. Figure 3 As shown, the solution adopted in this embodiment is as follows: a first cylindrical body 2512 is fixedly installed at the center of the side of the annular support plate 251 away from the annular fixed plate 252. The first cylindrical body 2512 passes through the first mounting hole 211 and extends to the rear side of the first fixing frame 21. The leakage detection device 24 includes a conductive rod 241, a second elastic element 242, and a controller 243. A slot 212 is opened on the rear side of the first fixing frame 21, and the conductive rod 241 is slidably installed in the slot 212. The second elastic element 242... The second elastic member 242 is disposed in the slot 212. The two ends of the second elastic member 242 abut against one end of the conductive rod 241 and the inner wall of the mounting groove 3412a, respectively. The other end of the conductive rod 241 passes through the slot 212 and abuts against the outer wall of the first cylinder 2512. The conductive rod 241 is electrically connected to the controller 243. The first fixing frame 21 is made of insulating material. The annular support plate 251, the first cylinder 2512, the positioning rod 254, the floating component 26, the arc plate 221 and the roller 2210 are all made of conductive material.

[0098] Using the above technical solution, the entire first adjusting device 25 and multiple arc plates 221 are driven by the first driving device 23 to rotate relative to the first mounting hole 211. The conductive rod 241 is always held against the outer wall of the first cylinder 2512 under the action of the second elastic element 242. When the cable insulation layer is damaged, the cable in the cable will be transmitted to the conductive rod 241 in sequence through the roller 2210, arc plate 221, floating component 26, positioning rod 254, annular support plate 251, and first cylinder 2512. The conductive rod 241 transmits the current to the controller 243, thereby obtaining the leakage current signal and the location of the cable damage point, so that the cable damage point can be transmitted to the glue application mechanism 31, and the glue application mechanism 31 can perform glue application repair in time.

[0099] See attached document Figure 2-4 As shown, the first driving device 23 in this embodiment includes a first motor 231 and a first gear 232. A second tooth 2511 is provided on the outer peripheral wall of the annular support disk 251. The first gear 232 is rotatably mounted on the front side of the first fixed frame 21 and meshes with the second tooth 2511. The first motor 231 is fixedly mounted on the side of the first fixed frame 21 away from the first adjusting device 25. The output shaft of the first motor 231 passes through the first fixed frame 21 and is fixedly connected to the first gear 232. The first motor 231 drives the first gear 232 to rotate. The first gear 232, through meshing with the second tooth 2511, drives the annular support disk 251 to rotate, thereby driving the entire first adjusting device 25 and the detection ring 22 to rotate. This ensures that the detection ring 22 is always in contact with the outer surface of the cable during rotation, improving detection accuracy and reliability.

[0100] This embodiment illustrates a preferred implementation of the clamping assembly 341. For details, please refer to the attached document. Figure 6 , 7 As shown in Figure 9, the clamping assembly 341 includes a first annular mounting plate 3411, a second annular mounting plate 3412, a rotating sleeve 3413, a second gear 3414, a second motor 3415, a first slip ring 3416, a first mounting bracket 3417, and a second mounting bracket 3418.

[0101] The first annular mounting plate 3411 forms the basis of the entire clamping assembly 341. It is rotatably mounted on the front side of the second fixing frame 33 and coaxial with the second mounting hole 331. The second driving device 36 is located on the rear side of the second fixing frame 33 and is used to drive the first annular mounting plate 3411 to rotate. The second annular mounting plate 3412 is rotatably mounted on the side of the first annular mounting plate 3411 away from the second fixing frame 33. The outer wall of the second annular mounting plate 3412 is evenly provided with mounting grooves 3412a, the same number as the adhesive-coated parts 342. The mounting grooves 3412a penetrate the inner wall of the second annular mounting plate 3412. The outer wall of the second annular mounting plate 3412 is provided with third teeth 3412b.

[0102] The adhesive application part 342 includes a rod 3421 and an adhesive application part 3422. The adhesive application part 3422 is located inside the second annular mounting plate 3412 and is circular in shape. One end of the rod 3421 is fixedly connected to the adhesive application part 3422, and the other end passes horizontally through the mounting groove 3412a and is rotatably connected to the first annular mounting plate 3411. The rotating sleeve 3413 is sleeved on the outside of the rod 3421 and rotatably disposed in the mounting groove 3412a. The rod 3421 can slide relative to the rotating sleeve 3413.

[0103] The first mounting bracket 3417 is fixedly mounted on the first annular mounting plate 3411, and the second motor 3415 is fixedly mounted on the first mounting bracket 3417. The output shaft of the second motor 3415 is connected to the third tooth 3412b through the second gear 3414.

[0104] Using the above technical solution, the second motor 3415 drives the second gear 3414 to rotate. The second gear 3414, through its third tooth 3412b, drives the second annular mounting plate 3412 to rotate relative to the first annular mounting plate 3411 by a certain angle. Since one end of the rod 3421 extending out of the mounting groove 3412a is rotatably connected to the first annular mounting plate 3411, during the rotation of the first annular mounting plate 3411, the rod 3421 will slide along the rotating sleeve 3413 via the rotating sleeve 3413. This allows the adhesive application part 3422 to swing towards the inside of the second mounting hole 331. Multiple adhesive application parts 3422 simultaneously swing towards the inside of the second mounting hole 331 to contact the outer wall of the cable, thereby achieving effective support and adhesive application to the outer wall of the cable. After the adhesive application is completed, the adhesive application part 342 will detach from the outer wall of the cable under the action of the clamping assembly, thus preventing the adhesive on the adhesive application part 3422 from adhering to the outer wall of the cable.

[0105] Since the entire clamping assembly 341 and the adhesive applicator 342 constitute the adhesive applicator 34, the adhesive applicator 34 needs to be driven to rotate by the second drive device 36. Because the second motor 3415 is fixed to the first annular mounting plate 3411, the rotation of the adhesive applicator 34 will drive the second motor 3415 to rotate synchronously. Therefore, by fixing the second mounting bracket 33 to the front side of the second mounting bracket 33, and providing a wire hole coaxial with the second mounting hole 331 on the second mounting bracket 3418, the first slip ring 3416 is fixedly disposed in the wire hole and slidably connected to the electrode of the second motor 3415. In this way, the second motor 3415 can establish an electrical connection through the first slip ring 3416 during rotation.

[0106] In order to ensure that the adhesive applicator 34 can supply adhesive to the adhesive applicator 342 during rotation, refer to the attached drawing. Figure 7 , 10As shown in Figure 11, this embodiment illustrates a preferred structural configuration of the glue injection device 35. Specifically, the glue injection device 35 includes a glue injection pressure vessel 351, a sealing ring 352, and a hollow rod 353. An annular groove 3411a is formed on the outer peripheral wall of the first annular mounting plate 3411. The sealing ring 352 is fixedly disposed on the front side of the second fixed frame 33, and is sleeved on the outer peripheral side of the first annular mounting plate 3411, and is rotatably and sealingly connected to the annular groove 3411a. The glue injection pressure vessel 351 is fixedly disposed on the top surface of the second fixed frame 33. The glue inlet of the device 351 passes through the sealing ring 352 and is connected to the annular groove 3411a. The hollow rod 353 is vertically fixed to the surface of the first annular mounting plate 3411 and is connected to the annular groove 3411a. The side of the rod 3421 away from the glue application part 3422 is rotatably and sealingly connected to the hollow rod 353. The glue application part 342 has a cavity 3420 inside. The outer peripheral wall of the hollow rod 353 has a glue inlet hole 3531 that is connected to the cavity 3420. The glue application part 3422 has multiple glue outlet holes 3423 on the side facing the second mounting hole 331.

[0107] With this configuration, when the clamping assembly 341 drives the coating part 3422 on the coating part 342 to contact the outer wall of the cable, the adhesive for repair is injected into the annular groove 3411a through the adhesive injection pressure vessel 351. Since the annular groove 3411a and the sealing ring 352 are in a rotational sealing connection, the adhesive will fill the annular groove 3411a. The adhesive enters each hollow rod 353 in the annular groove 3411a, and then enters the cavity 3420 of the coating part 342 through the adhesive inlet hole 3531 on the outer wall of the hollow rod 353. The adhesive then flows out through the adhesive outlet hole 3423 on the coating part 3422, thereby being applied to the outer wall of the cable.

[0108] The adhesive coating component 342 has a cavity 3420 inside, and the rod 3421 of the adhesive coating component 342 is rotatably and sealingly connected to the hollow rod 353. At the same time, the cavity 3420, the hollow rod 353, and the annular groove 3411a of the adhesive coating component 342 establish an adhesive flow channel, so that the adhesive can always flow through the above-mentioned flow channel during the rotation of the entire clamping assembly, thereby achieving uniform application of adhesive to the outer wall of the cable.

[0109] In the above embodiment, the glue injection pressure vessel 351 contains glue, and the glue outflow rate can be controlled by pressurizing the vessel.

[0110] To enable the second drive unit 36 ​​to drive the glue application unit 34 to rotate, refer to the attached document. Figure 8As shown, in this embodiment, a second cylindrical body 3411b is fixedly disposed at the center of the side of the first annular mounting plate 3411 away from the second annular mounting plate 3412. The outer peripheral wall of the second cylindrical body 3411b is provided with a fourth tooth 3411c. The second cylindrical body 3411b passes through the second mounting hole 331 and extends to the rear side of the second fixing frame 33. The second driving device 36 includes a third motor 361 and a third gear 362. The third motor 361 is fixedly disposed on the second fixing frame 33. The output shaft of the third motor 361 is connected to the fourth tooth 3411c through the third gear 362. With this configuration, the third motor 361 drives the third gear 362 to rotate. The third gear 362, through meshing with the fourth tooth 3411c, drives the second cylindrical body 3411b to rotate, thereby realizing the rotation of the clamping assembly 341, and finally realizing the rotation of the glue applicator 34. During the rotation, the sealing ring 352 always maintains a dynamic sealing connection with the first annular mounting plate 3411 to ensure that the glue is in a sealed flow state.

[0111] To ensure the accuracy of the cable insulation performance testing process and to guarantee that the subsequent adhesive can effectively bond with the cable damage area, this embodiment also includes a cleaning mechanism 5, located on the side furthest from the repair mechanism 3, as shown in the attached diagram. Figure 12 and 13 As shown, it includes a third fixing frame 51, a mounting cylinder 52, an arc-shaped clamping plate 53, a second adjusting device 54, and a third driving device 55.

[0112] The third mounting bracket 51 has a third mounting hole 511 coaxial with the first mounting hole 211 on its side wall. The mounting cylinder 52 is horizontally rotatably disposed in the third mounting hole 511. Two arc-shaped clamping plates 53 are provided, and the two arc-shaped clamping plates 53 are coaxially disposed inside the mounting cylinder 52. The inner side wall of the arc-shaped clamping plates 53 is provided with bristles 56. The second adjusting device 54 is disposed between the arc-shaped clamping plates 53 and the mounting cylinder 52, and includes a guide rod 541 and an adjusting screw 542. One end of the adjusting screw 542 is connected to the arc-shaped clamping plate 53. The outer wall of the arc-shaped clamp 53 is rotatably connected in the radial direction, and the other end passes vertically upward through the mounting cylinder 52 and is threadedly connected to the mounting cylinder 52. Two guide rods 541 are provided, which are symmetrically arranged on both sides of the adjusting screw 542 along the axial direction of the arc-shaped clamp 53. One end of the guide rod 541 is fixedly connected to the arc-shaped clamp 53, and the other end moves vertically upward through the mounting cylinder 52. The third driving device 55 is located on the rear side of the third fixed frame 51 and is used to drive the mounting cylinder 52 to rotate the arc-shaped clamp 53.

[0113] Using the above technical solution, the distance between the two arc-shaped clamps 53 is adjusted by the second adjusting device 54 according to the diameter of the cable. Specifically, by turning the adjusting screw 542, the adjusting screw 542 moves up and down relative to the mounting cylinder 52, thereby driving the arc-shaped clamps 53 to move up and down. The guide rod 541 keeps the arc-shaped clamps 53 moving only up and down. The mounting cylinder 52 is driven to rotate by the third driving device 55, which ensures that the mounting cylinder 52 and the two arc-shaped clamps 53 rotate synchronously, so that the bristles 56 rotate on the outer wall of the cable to remove contaminants such as dust and impurities from the outer wall of the cable, so as to avoid affecting the testing process and prevent dust and impurities from affecting the subsequent glue application operation.

[0114] This embodiment also includes a base plate 6. The cleaning mechanism 5, detection mechanism 2, and repair mechanism 3 are sequentially and fixedly mounted on the base plate 6. A conveyor roller is also provided on the side of the cleaning mechanism 5 away from the detection mechanism 2 to facilitate straight-line cable transmission. The cable laying device 1 and cable take-up device 4 have identical structures, both including a cable laying frame 11, a cable reel 12, and a second slip ring 13. The cable reel 12 is rotatably mounted on the cable laying frame 11. The rotating part of the second slip ring 13 is fixedly connected to the rotating shaft of the cable reel 12, and the fixed part of the second slip ring 13 is fixedly connected to the cable laying frame 11. One end of the cable is electrically connected via the rotating shaft and the rotating part of the second slip ring 13, and the fixed part of the second slip ring 13 is used for power connection. In the above embodiment, the power for cable transmission can be provided by either the cable laying device or the take-up device, or it can be provided by the transmission roller.

[0115] This invention also discloses a method for testing and repairing cable insulation performance, which utilizes the cable insulation performance testing and repair device described in the first aspect, and includes the following steps:

[0116] S1. Pass the free end of the cable to be tested on the cable laying device 1 through the detection mechanism 2 and the repair mechanism 3 in sequence and connect it with the cable taking device.

[0117] S2. Pass current through both ends of the cable and make the cable move horizontally toward the cable receiving device;

[0118] S3. The first driving device 23 drives the detection ring 22 to rotate on the outer surface of the cable. When the leakage current detection device 24 detects a leakage current signal on the detection ring 22, it records the fault point of the cable insulation layer.

[0119] S4. When the cable insulation layer fault point is located at the repair mechanism 3, the first drive device 23 stops operating, the cable stops transmitting, the clamping assembly 341 drives multiple glue applicators 342 to clamp the outer wall of the cable, the glue injection device 35 applies glue to the outer wall of the cable through the glue applicators 342, and the second drive device 36 drives the glue applicator 34 to rotate, so that the glue applicators 342 apply glue evenly to the outer wall of the cable.

[0120] S5. After the adhesive is applied, the coated part 342 is disconnected from the cable, and the cable continues to be transmitted. When the coated cable is transmitted to the drying box 32, the cable at the coated part is baked by the drying box 32 to cure the adhesive.

[0121] S6. The repaired cable is then coiled and retrieved using a cable collection device, thus completing the cable insulation performance test and repair.

[0122] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cable insulation performance testing and repair device, characterized in that, include; Cable release device (1), used to release the cable to be inspected; The detection mechanism (2) is set on one side of the cable laying device (1) and is used to test the insulation performance of the cable released by the cable laying device (1). The detection mechanism (2) includes a first fixed frame (21) and a detection ring (22), a first driving device (23) and a leakage current detection device (24) set on the first fixed frame (21). The side wall of the first fixed frame (21) is provided with a first mounting hole (211). The detection ring (22) is set at the first mounting hole (211). The first driving device (23) is used to drive the detection ring (22) to rotate on the outer surface of the cable. The leakage current detection device (24) is used to obtain the leakage current signal on the detection ring (22). A repair mechanism (3) is located on the side of the detection mechanism (2) away from the cable laying device (1) and is used to repair cable insulation layer faults when a leakage current signal is received. The repair mechanism (3) includes a gluing mechanism (31) and a drying chamber (32). The gluing mechanism (31) is located between the detection mechanism (2) and the drying chamber (32). The gluing mechanism (31) includes a second fixing frame (33) and a gluing device (34), a glue injection device (35), and a second driving device (36) mounted on the second fixing frame (33). The side wall is provided with a second mounting hole (331) coaxial with the first mounting hole (211). The glue application device (34) includes a clamping assembly (341) and a plurality of glue application parts (342). The plurality of glue application parts (342) are evenly surrounded around the second mounting hole (331). The clamping assembly (341) is used to drive the glue application parts (342) to clamp the outer wall of the cable. The glue injection device (35) is used to apply glue to the outer wall of the cable through the glue application parts (342). The second drive device (36) is used to drive the glue application device (34) to rotate. The drying box (32) is used to dry the glued cable. The cable retraction device (4) is located on the side of the repair mechanism (3) away from the detection mechanism (2) and is used to retract the repaired cable.

2. The cable insulation performance testing and repair device as described in claim 1, characterized in that: The detection ring (22) includes multiple arc-shaped plates (221) uniformly surrounding the first mounting hole (211). The detection mechanism (2) also includes a first adjustment device (25) disposed on the front side of the first fixed frame (21) for driving the multiple arc-shaped plates (221) to open or close synchronously. The first driving device (23) is used to drive the first adjustment device (25) to rotate around the first mounting hole (211). The first adjustment device (25) includes an annular support plate (251), an annular fixed plate (252), an annular gear plate (253), a positioning rod (254), a driven gear (255), and a driving gear (256). The annular support plate (251) is coaxially rotatably disposed at the first mounting hole (211). The number of positioning rods (254) is the same as the number of arc plates (221). One end of the positioning rod (254) is slidably disposed on the surface of the annular support plate (251), and the other end is connected to the arc plate (221). The side wall of the positioning rod (254) is provided with a first tooth (2541). The number of driven gears (255) is the same as the number of positioning rods (254). The driven gears (255) are rotatably mounted on the annular support plate (251) and located on one side of the corresponding positioning rod (254) and meshing with the first tooth (2541). The annular toothed plate (253) is horizontally mounted above the positioning rod (254). The internal teeth of the annular toothed plate (253) mesh with multiple driven gears (255). The annular fixed disk (252) is located outside the annular gear disk (253) and is fixedly connected to the annular support disk (251). The drive gear (256) is rotatably disposed between the annular fixed disk (252) and the annular support disk (251), and the drive gear (256) meshes with the external teeth of the annular gear disk (253). The central shaft of the drive gear (256) moves through the outside of the annular fixed disk (252) and is connected to an adjustment knob (2561).

3. The cable insulation performance testing and repair device as described in claim 2, characterized in that: The inner wall of the arc plate (221) is provided with multiple rollers (2210) that rotate uniformly around the central axis of the first mounting hole (211). The axial direction of the rollers (2210) is parallel to the axial direction of the first mounting hole (211). A floating component (26) is also provided between the arc plate (221) and the positioning rod (254). The floating component (26) includes a first elastic element (261), a connecting rod (262) and a connecting plate (263). The connecting plate (263) is vertically fixed to one end of the positioning rod (254) facing the arc plate (221). One end of the connecting rod (262) is fixedly connected to the outer wall of the arc plate (221), and the other end moves through the connecting plate (263) and is connected to a limiting part (2621). The first elastic element (261) is sleeved on the connecting rod (262) between the connecting plate (263) and the arc plate (221). The first cylindrical body (2512) is fixedly installed at the center of the side of the annular support plate (251) away from the annular fixed plate (252). The first cylindrical body (2512) passes through the first mounting hole (211) and extends to the rear side of the first fixing frame (21). The leakage detection device (24) includes a conductive rod (241), a second elastic element (242), and a controller (243). A slot (212) is provided on the rear side of the first fixing frame (21). The conductive rod (241) is slidably disposed in the slot (212), and the second elastic element (242) is disposed in the slot. In (212), the two ends of the second elastic member (242) abut against one end of the conductive rod (241) and the inner wall of the mounting groove (3412a), respectively. The other end of the conductive rod (241) passes through the slot (212) and abuts against the outer wall of the first cylinder (2512). The conductive rod (241) is electrically connected to the controller (243). The first fixing frame (21) is made of insulating material. The annular support plate (251), the first cylinder (2512), the positioning rod (254), the floating component (26), the arc plate (221), and the roller (2210) are all made of conductive material.

4. The cable insulation performance testing and repair device as described in claim 2, characterized in that: The first driving device (23) includes a first motor (231) and a first gear (232). The outer peripheral wall of the annular support disk (251) is provided with a second tooth (2511). The first gear (232) is rotatably disposed on the front side of the first fixed frame (21) and meshes with the second tooth (2511). The first motor (231) is fixedly disposed on the side of the first fixed frame (21) away from the first adjusting device (25). The output shaft of the first motor (231) passes through the first fixed frame (21) and is fixedly connected to the first gear (232).

5. The cable insulation performance testing and repair device as described in claim 1, characterized in that: The clamping assembly (341) includes a first annular mounting plate (3411), a second annular mounting plate (3412), a rotating sleeve (3413), a second gear (3414), a second motor (3415), a first slip ring (3416), a first mounting bracket (3417), and a second mounting bracket (3418); The first annular mounting plate (3411) is rotatably disposed on the front side of the second fixed frame (33) and coaxial with the second mounting hole (331). The second driving device (36) is disposed on the rear side of the second fixed frame (33) and is used to drive the first annular mounting plate (3411) to rotate. The second annular mounting plate (3412) is coaxially rotatably disposed on the side of the first annular mounting plate (3411) away from the second fixed frame (33). The outer wall of the second annular mounting plate (3412) is evenly provided with mounting grooves (3412a) equal in number to the number of adhesive parts (342). The mounting grooves (3412a) penetrate the inner wall of the second annular mounting plate (3412). The outer wall of the second annular mounting plate (3412) is provided with a third tooth (3412b). The adhesive-coating component (342) includes a rod (3421) and an adhesive-coating part (3422). The adhesive-coating part (3422) is located inside the second annular mounting plate (3412). The adhesive-coating part (3422) is circular in shape. One end of the rod (3421) is fixedly connected to the adhesive-coating part (3422), and the other end passes horizontally through the mounting groove (3412a) and is rotatably connected to the first annular mounting plate (3411). The rotating sleeve (3413) is sleeved on the outside of the rod (3421) and rotatably disposed in the mounting groove (3412a). The rod (3421) can slide horizontally relative to the rotating sleeve (3413). The first mounting bracket (3417) is fixedly mounted on the first annular mounting plate (3411), and the second motor (3415) is fixedly mounted on the first mounting bracket (3417). The output shaft of the second motor (3415) is connected to the third tooth (3412b) through the second gear (3414). The second mounting bracket (3418) is fixedly mounted on the front side of the second fixed bracket (33). The second mounting bracket (3418) has a wire hole coaxial with the second mounting hole (331). The first slip ring (3416) is fixedly mounted in the wire hole and is slidably connected to the electrode of the second motor (3415).

6. The cable insulation performance testing and repair device as described in claim 5, characterized in that: The glue injection device (35) includes a glue injection pressure vessel (351), a sealing ring (352), and a hollow rod (353). The outer peripheral wall of the first annular mounting plate (3411) is provided with an annular groove (3411a). The sealing ring (352) is fixedly installed on the front side of the second fixed frame (33) and is sleeved on the outer peripheral side of the first annular mounting plate (3411), and is rotatably and sealingly connected with the annular groove (3411a). The glue injection pressure vessel (351) is fixedly installed on the top surface of the second fixed frame (33), and the glue injection port of the glue injection pressure vessel (351) passes through the sealing ring (352). The hollow rod (353) is vertically fixed to the surface of the first annular mounting plate (3411) and connected to the annular groove (3411a). The side of the rod (3421) away from the glue coating part (3422) is rotatably and sealed to the hollow rod (353). The glue coating part (342) has a cavity (3420) inside. The outer peripheral wall of the hollow rod (353) has a glue inlet hole (3531) that communicates with the cavity (3420). The glue coating part (3422) has multiple glue outlet holes (3423) on the side facing the second mounting hole (331).

7. The cable insulation performance testing and repair device as described in claim 5, characterized in that: A second cylindrical body (3411b) is fixedly disposed at the center of the side of the first annular mounting plate (3411) away from the second annular mounting plate (3412). The outer peripheral wall of the second cylindrical body (3411b) is provided with a fourth tooth (3411c). The second cylindrical body (3411b) passes through the second mounting hole (331) and extends to the rear side of the second fixing frame (33). The second driving device (36) includes a third motor (361) and a third gear (362). The third motor (361) is fixedly disposed on the second fixing frame (33). The output shaft of the third motor (361) is meshed with the fourth tooth (3411c) through the third gear (362).

8. The cable insulation performance testing and repair device as described in claim 1, characterized in that: It also includes a cleaning mechanism (5), which is located on the side of the testing mechanism (2) away from the repair mechanism (3), including a third fixing frame (51), a mounting cylinder (52), an arc-shaped clamp (53), a second adjustment device (54) and a third drive device (55); The third fixing frame (51) has a third mounting hole (511) coaxial with the first mounting hole (211) on its side wall. The mounting cylinder (52) is horizontally rotatably installed in the third mounting hole (511). There are two arc-shaped clamps (53), which are coaxially installed in the mounting cylinder (52). The inner side wall of the arc-shaped clamps (53) is provided with bristles (56). The second adjustment device (54) is located between the arc-shaped clamp (53) and the mounting cylinder (52), including a guide rod (541) and an adjustment screw (542). One end of the adjustment screw (542) is rotatably connected to the outer wall of the arc-shaped clamp (53) in the radial direction, and the other end passes vertically upward through the mounting cylinder (52) and is threadedly connected to the mounting cylinder (52). There are two guide rods (541), which are symmetrically arranged on both sides of the adjustment screw (542) along the axial direction of the arc-shaped clamp (53). One end of the guide rod (541) is fixedly connected to the arc-shaped clamp (53), and the other end moves vertically upward through the mounting cylinder (52). The third drive device (55) is located on the rear side of the third fixed frame (51) and is used to drive the mounting cylinder (52) to rotate the arc-shaped clamp (53).

9. The cable insulation performance testing and repair device as described in claim 8, characterized in that: It also includes a base plate (6), and the cleaning mechanism (5), the detection mechanism (2) and the repair mechanism (3) are sequentially and fixedly arranged on the base plate (6). The cleaning mechanism (5) is also provided with a conveyor roller (7) on the side away from the detection mechanism (2). The cable laying device (1) and cable take-up device (4) have the same structure, both including a cable laying frame (11), a cable reel (12) and a second slip ring (13). The cable reel (12) is rotatably mounted on the cable laying frame (11). The rotating part of the second slip ring (13) is fixedly connected to the rotating shaft of the cable reel (12), and the fixed part of the second slip ring (13) is fixedly connected to the cable laying frame (11). One end of the cable is used for electrical connection through the rotating shaft and the rotating part of the second slip ring (13), and the fixed part of the second slip ring (13) is used for power connection.

10. A method for testing and repairing cable insulation performance, comprising using the cable insulation performance testing and repair device according to any one of claims 1 to 9, characterized in that, The steps include the following: S1. Pass the free end of the cable to be tested on the cable laying device through the detection mechanism and the repair mechanism in sequence and connect it with the cable taking device. S2. Pass current through both ends of the cable and make the cable move horizontally toward the cable receiving device; S3. The first driving device drives the detection ring to rotate on the outer surface of the cable. When the leakage current detection device detects a leakage current signal on the detection ring, it records the fault point of the cable insulation layer. S4. When the cable insulation layer fault point is located at the repair mechanism, the first drive device stops operating, the cable stops transmitting, the clamping assembly drives multiple glue applicators to clamp the outer wall of the cable, the glue injection device applies glue to the outer wall of the cable through the glue applicators, and the second drive device drives the glue applicator to rotate so that the glue applicators apply glue evenly to the outer wall of the cable. S5. After the adhesive is applied, the coated part is disconnected from the cable, and the cable continues to transmit. When the coated cable is transmitted to the drying box, the cable at the coated part is baked in the drying box to cure the adhesive. S6. The repaired cable is then coiled and retrieved using a cable collection device, thus completing the cable insulation performance test and repair.

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