High-precision real-time detection method for leakage current of power supply and detection device based on high-precision real-time detection method

Abstract

The invention relates to the technical field of electric leakage detection, and discloses a high-precision real-time detection method for power source leakage current and a detection device based on the method, the detection device comprises a base, a detector and a precise detection device, the detector is fixedly connected with the base, the precise detection device is arranged on the surface of the base, and the precise detection device comprises a round frame. The round frame is fixedly connected with the base. According to the invention, high-precision positioning of the electric leakage part of the power line is realized, and after the power line passes through the round frame and the conductive sleeve and is fixed by the plastic clamp, the electric signal generated by electric leakage is accurately transmitted to the detector by using the conduction characteristic of the conductive sleeve to the leakage current. The device effectively reduces the problem of leak detection caused by insufficient detection range and low signal sensitivity, realizes whole-course dynamic detection of a power line, can capture an electric leakage signal in real time, greatly improves the accuracy and timeliness of detection, can quickly lock an electric leakage point, and saves a lot of time for subsequent maintenance.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric leakage detection, in particular to a high-precision real-time detection method for power leakage current and a detection device based on the method. BACKGROUND

[0002] Power leakage detection is an important measure to ensure electrical safety. Leakage refers to the leakage of current that does not flow along the normal path. It is caused by insulation aging, damage, moisture or design defects, etc. Its hazards include causing electric shock accidents, damaging equipment and even causing fires. Regular power leakage detection can help discover potential problems in time and prevent safety accidents.

[0003] However, the conventional detection equipment for power leakage detection is prone to missed detection. Ordinary multimeters and leakage testers have insufficient sensitivity to weak leakage signals and are prone to ignore potential problems such as early insulation performance degradation. The detection range is limited and it is difficult to cover complex lines and hidden parts, making it difficult to discover dynamic changes in leakage in time. Therefore, the application provides a high-precision real-time detection method for power leakage current and a detection device based on the method. SUMMARY

[0004] One technical problem to be solved

[0005] In view of the deficiencies of the prior art, the application provides a high-precision real-time detection method for power leakage current and a detection device based on the method, which solves the problem that the conventional detection equipment for power leakage detection is prone to missed detection. Ordinary multimeters and leakage testers have insufficient sensitivity to weak leakage signals and are prone to ignore potential problems such as early insulation performance degradation. The detection range is limited and it is difficult to cover complex lines and hidden parts, making it difficult to discover dynamic changes in leakage in time.

[0006] Two technical solutions

[0007] In order to achieve the above object, the present application is realized by the following technical scheme: the high-precision real-time detection method of power supply leakage current and the detection device based on the method, comprising a base, a detector and a precision detection device, the detector is fixedly connected with the base, the precision detection device is arranged on the surface of the base, the precision detection device comprises a circular frame, the circular frame is fixedly connected with the base, the inner wall of the circular frame is rotatably connected with a first circular wheel, one end of the circular frame close to the first circular wheel is rotatably connected with a second circular wheel, one side of the base close to the circular frame is fixedly connected with a conductive sleeve, one end of the conductive sleeve is fixedly connected with a detection line, the end of the detection line away from the conductive sleeve is electrically connected with the detector, the center of the conductive sleeve is provided with a threading hole, by arranging the precision detection device, the high-precision positioning of the power line leakage position is realized, after the power line passes through the circular frame, the conductive sleeve and is fixed by the plastic clamp, the conductive sleeve is used for the conduction characteristic of the leakage current, the electric signal generated by the leakage is accurately transmitted to the detector, compared with the traditional detection equipment, the missed detection problem caused by insufficient detection range and low signal sensitivity is effectively reduced, at the same time, the device realizes the whole process dynamic detection of the power line, can capture the leakage signal in real time, greatly improves the accuracy and timeliness of the detection, can quickly lock the leakage point, saves a lot of time for subsequent maintenance.

[0008] Preferably, one end of the detector is fixedly connected with a fixed rod, the surface of the fixed rod is rotatably connected with a rocker, one end of the rocker is fixedly connected with a handle, by arranging the rocker connected with the handle, the power line is wound during rotation, the power line is slowly pulled through the conductive sleeve by the first circular wheel and the second circular wheel, so that the power line is detected during winding.

[0009] Preferably, the lower surface of the rocker is fixedly connected with a plastic clamp, the plastic clamp has two, the two plastic clamps are symmetrically arranged, by arranging the plastic clamp, the power line is clamped and fixed, the position of the power line is stable during detection, which is convenient for subsequent winding, traction and other operations to make the power line smoothly pass through the conductive sleeve and other components, provides a basic fixed guarantee for accurate detection of the leakage position, reduces the influence of power line shaking or position deviation on detection effect and subsequent repair operation.

[0010] Preferably, the upper surface of the fixed rod is provided with a threaded hole, the inner wall of the threaded hole of the upper surface of the fixed rod is threadedly connected with a lead screw, the lead screw is in contact with the rocker, by arranging the lead screw, the handle can drive the rocker to rotate by rotating away from the rocker during detection, so as to realize the winding operation of the power line, provide power transmission and structural connection basis for subsequent leakage detection of the power line through the first circular wheel, the second circular wheel and the conductive sleeve, ensure the smooth start and execution of the winding process.

[0011] Preferably, the detection instrument is provided with a hooking device near one end of the rocker, the hooking device comprises an assembly sleeve, the assembly sleeve is fixedly connected with the detection instrument, a micro motor is fixedly connected to the surface of the assembly sleeve, a two-way threaded rod is fixedly connected to the driving end of the micro motor, a sliding groove is formed in the side of the detection instrument close to the two-way threaded rod, a moving rod is slidably connected to the inner wall of the sliding groove on one side of the detection instrument, by setting the hooking device, when the rocker pulls the power cord to be wound, the pull plate can slide left and right under the power cord under the action of the two-way threaded rod driven by the motor, accurately hooks the power cord, prevents damage caused by excessive local stress of the power cord, and prolongs the service life of the power cord.

[0012] Preferably, the surface of the moving rod is fixedly connected with a threaded ring, and the threaded ring is threadedly connected with the two-way threaded rod, by setting the two-way threaded rod, the threaded ring is driven to move, and then the moving rod and the pull plate are slid, by continuously rotating the two-way threaded rod in the forward and reverse directions, the pull plate can reciprocatingly pull the power cord, so that the position of the power cord is changed, and the power cord is uniformly wound on the rocker.

[0013] Preferably, the lower surface of the threaded ring is fixedly connected with a pull plate, and the pull plate has two, the two pull plates are symmetrically arranged, by setting the pull plate, when the rocker pulls the power cord to be wound, the pull plate is located below the power cord, the two-way threaded rod is driven to rotate by the motor, the threaded ring is driven to move, and then the moving rod and the pull plate are slid, the power cord is hooked in the sliding process, with the two-way threaded rod rotating in the forward and reverse directions, the pull plate slowly pulls the power cord to change the position, so that the power cord is uniformly wound on the rocker.

[0014] Preferably, one end of the detection instrument is provided with a repairing device, the repairing device comprises a connecting plate, the connecting plate is fixedly connected with the detection instrument, a sleeve rod is fixedly connected to the surface of the connecting plate, an insulating adhesive tape is sleeved on the surface of the sleeve rod, a limiting hole is formed in the surface of the sleeve rod, and a limiting rod is inserted into the inner wall of the limiting hole on the surface of the sleeve rod, by setting the repairing device, the leakage site can be repaired immediately after being detected, the efficiency and convenience of repair are greatly improved, the operation steps of maintenance personnel are reduced, the maintenance cost is reduced, the safety and reliability of the power supply system are improved.

[0015] Preferably, a knife holder is fixedly connected to the side of the detection instrument close to the insulating adhesive tape, a strip-shaped hole is formed in the surface of the knife holder, a blade is inserted into the upper surface of the knife holder, a pressing rod is fixedly connected to the upper surface of the blade, a spring is fixedly connected to one end of the blade, and the end of the spring away from the blade is fixedly connected with the knife holder, by setting the spring, when the blade is cut by pressing the pressing rod, the spring generates elastic force when the pull rod is released, the blade is reset by extrusion, and subsequent reuse is facilitated.

[0016] In summary, the technical effects and advantages of the present application are:

[0017] 1、The high-precision real-time detection method for power leakage current and the detection device based on the method, by setting the accurate detection device, realizes the high-precision positioning of the power line leakage position, after the power line passes through the round frame, the conductive sleeve and is fixed by the plastic clamp, the conductive sleeve is used for the transmission of the leakage current, the electric signal generated by the leakage is accurately transmitted to the detector, compared with the traditional detection equipment, effectively reduces the missed detection problem caused by the insufficient detection range and low signal sensitivity, and simultaneously, the device realizes the whole dynamic detection of the power line, can capture the leakage signal in real time, greatly improves the accuracy and timeliness of the detection, and can quickly lock the leakage point, saves a lot of time for subsequent maintenance.

[0018] 2、The high-precision real-time detection method for power leakage current and the detection device based on the method, by setting the hooking device, when the rocker pulls the power line to be wound, the pull plate can slide left and right under the power line under the action of the bidirectional screw rod driven by the motor, accurately hooks the power line, prevents damage caused by excessive local stress of the power line, and prolongs the service life of the power line.

[0019] 3、The high-precision real-time detection method for power leakage current and the detection device based on the method, by setting the repairing device, the leakage position can be repaired immediately after being detected, greatly improves the efficiency and convenience of repair, reduces the operation steps of the maintenance personnel, reduces the maintenance cost, and simultaneously improves the safety and reliability of the power supply system. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method;

[0021] Figure 2 It is the side view structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method;

[0022] Figure 3 It is the accurate detection device structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method;

[0023] Figure 4 It is the accurate detection device structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method; Figure 3 It is the A place amplification structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method;

[0024] Figure 5 It is the hooking device structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method;

[0025] Figure 6 It is the repairing device structure schematic view of the high-precision real-time detection method for power leakage current and the detection device based on the method;

[0026] Figure 7 The application discloses a high-precision real-time detection method for power leakage current and a detection device based on the method Figure 6 The application discloses a high-precision real-time detection method for power leakage current and a detection device based on the method

[0027] In the figure, 1 is a base, 2 is a detector, 3 is a precision detection device, 31 is a detection line, 32 is a conductive sleeve, 33 is a round frame, 34 is a first round wheel, 35 is a second round wheel, 36 is a rocker, 37 is a fixed rod, 38 is a screw rod, 39 is a handle, 310 is a plastic clamp, 4 is a hooking device, 41 is a micro motor, 42 is an assembling sleeve, 43 is a two-way threaded rod, 44 is a threaded ring, 45 is a pull plate, 46 is a moving rod, 5 is a repairing device, 51 is a connecting plate, 52 is a sleeve rod, 53 is a limiting rod, 54 is an insulating adhesive tape, 55 is a tool holder, 56 is a tool bit, 57 is a spring, and 58 is a pressing rod. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be apparently and completely described below with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0029] Reference Figures 1-7 The high-precision real-time detection method for power leakage current and the detection device based on the method shown in the figure comprise a base 1, a detector 2 and a precision detection device 3, the detector 2 is fixedly connected with the base 1, the precision detection device 3 is arranged on the surface of the base 1, the precision detection device 3 comprises a round frame 33, the round frame 33 is fixedly connected with the base 1, the inner wall of the round frame 33 is rotationally connected with a first round wheel 34, one end of the round frame 33 close to the first round wheel 34 is rotationally connected with a second round wheel 35, one side of the base 1 close to the round frame 33 is fixedly connected with a conductive sleeve 32, one end of the conductive sleeve 32 is fixedly connected with a detection line 31, the end of the detection line 31 away from the conductive sleeve 32 is electrically connected with the detector 2, and a threading hole is formed in the center of the conductive sleeve 32. Through the arrangement of the precision detection device 3, high-precision positioning of a power line leakage position is realized. After the power line passes through the round frame 33 and the conductive sleeve 32 and is fixed by a plastic clamp 310, the conductive sleeve 32 is used to conduct the leakage current, and the electric signal generated by the leakage is accurately transmitted to the detector 2. Compared with a traditional detection device, the leakage detection problem caused by insufficient detection range and low signal sensitivity is effectively reduced. Meanwhile, the device realizes full-range dynamic detection of the power line, can capture the leakage signal in real time, greatly improves the accuracy and timeliness of detection, and can quickly lock the leakage point, thereby saving a large amount of time for subsequent maintenance.

[0030] One end of the detector 2 is fixedly connected with a fixed rod 37, the surface of the fixed rod 37 is rotatably connected with a rocker 36, one end of the rocker 36 is fixedly connected with a handle 39, the rocker 36 is connected with the handle 39, and the power cord is wound during rotation. The first circular wheel 34 and the second circular wheel 35 slowly pull the power cord through the conductive sleeve 32, so that the power cord is detected during winding.

[0031] The lower surface of the rocker 36 is fixedly connected with a plastic clamp 310, the plastic clamp 310 has two, the two plastic clamps 310 are symmetrically arranged, the power cord is clamped and fixed by arranging the plastic clamp 310, the position of the power cord is stable during detection, and subsequent winding, traction and other operations are facilitated. The power cord smoothly passes through the components such as the conductive sleeve 32, provides a basic fixed guarantee for accurate detection of the leakage position, and reduces the influence of the detection effect and the subsequent repair operation due to the shaking or position deviation of the power cord.

[0032] The upper surface of the fixed rod 37 is provided with a threaded hole, the inner wall of the threaded hole of the upper surface of the fixed rod 37 is threadedly connected with a lead screw 38, and the lead screw 38 is in contact with the rocker 36. By arranging the lead screw 38, the handle 39 can drive the rocker 36 to rotate by rotating away from the rocker 36 during detection, so that the winding operation of the power cord is realized, and the power cord passes through the first circular wheel 34, the second circular wheel 35 and the conductive sleeve 32 for leakage detection. Provide power transmission and structural connection basis, ensure the smooth start and execution of the winding process.

[0033] The end of the detector 2 close to the rocker 36 is provided with a hooking device 4, the hooking device 4 includes an assembly sleeve 42, the assembly sleeve 42 is fixedly connected with the detector 2, the surface of the assembly sleeve 42 is fixedly connected with a micro motor 41, the driving end of the micro motor 41 is fixedly connected with a bidirectional threaded rod 43, and the side of the detector 2 close to the bidirectional threaded rod 43 is provided with a sliding groove. The inner wall of the sliding groove on one side of the detector 2 is slidably connected with a moving rod 46. By arranging the hooking device 4, when the rocker 36 pulls the power cord to wind, the pull plate 45 can slide left and right under the power cord under the action of the bidirectional threaded rod 43 driven by the motor, accurately hooks the power cord, prevents damage caused by excessive local stress of the power cord, and prolongs the service life of the power cord.

[0034] The surface of the moving rod 46 is fixedly connected with a threaded ring 44, and the threaded ring 44 is threadedly connected with the bidirectional threaded rod 43. By arranging the bidirectional threaded rod 43, the threaded ring 44 is driven to move, and then the moving rod 46 and the pull plate 45 are pulled to slide. By continuously rotating the bidirectional threaded rod 43 forward and backward, the pull plate 45 can reciprocatingly pull the power cord, so as to change the position of the power cord and make it uniformly wound on the rocker 36.

[0035] The lower surface of the threaded ring 44 is fixedly connected with a pull plate 45, the pull plate 45 is two, the two pull plates 45 are symmetrically arranged, through the arrangement of the pull plate 45, when the rocker 36 pulls the power line to be wound, the pull plate 45 is located below the power line, the motor drives the bidirectional threaded rod 43 to rotate to drive the threaded ring 44, and then the pull rod 46 is pulled and slides with the pull plate 45, the power line is hung in the sliding process, with the bidirectional threaded rod 43 rotating forward and backward, the pull plate 45 slowly pulls the power line to change the position, so that the power line is uniformly wound on the rocker 36.

[0036] The detection instrument 2 is fixedly connected with a knife holder 55 on the side close to the insulating tape 54, the surface of the knife holder 55 is provided with a strip-shaped hole, the upper surface of the knife holder 55 is provided with a knife blade 56, the upper surface of the knife blade 56 is fixedly connected with a pressing rod 58, one end of the knife blade 56 is fixedly connected with a spring 57, and the end, away from the knife blade 56, of the spring 57 is fixedly connected with the knife holder 55.

[0037] The detection instrument 2 is fixedly connected with a knife holder 55 on the side close to the insulating tape 54, the surface of the knife holder 55 is provided with a strip-shaped hole, the upper surface of the knife holder 55 is provided with a knife blade 56, the upper surface of the knife blade 56 is fixedly connected with a pressing rod 58, one end of the knife blade 56 is fixedly connected with a spring 57, and the end, away from the knife blade 56, of the spring 57 is fixedly connected with the knife holder 55.

[0038] The working principle of the present application is as follows: through the arrangement of the accurate detection device 3, when detecting the power line leakage part, the detection instrument 2 is opened, the power line is passed through the circular frame 33 and the conductive sleeve 32, and finally the power line is clamped and fixed by using the plastic clamp 310, then the screw rod 38 is rotated to be separated from the rocker 36, at this time, the handle 39 is gripped to drive the rocker 36 to rotate, the rocker 36 is wound while rotating, the first circular wheel 34 and the second circular wheel 35 are rotated and slowly pull the power line through the conductive sleeve 32, in the normal state of the power line, the insulating skin on the surface of the power line prevents power leakage, when the insulating skin is broken, power will leak, when the leakage position passes through the conductive sleeve 32 of iron, the power is transmitted to the detection instrument 2 through the conductive sleeve 32 and the detection line 31, the detection instrument 2 receives the electric signal, and the leakage position can be determined.

[0039] By setting the hook device 4, in the rocker 36 traction power cord winding, pull plate 45 under the power cord, start the motor, the motor drive bidirectional screw rod 43 rotation, bidirectional screw rod 43 rotation while driving the screw ring 44, screw ring 44 traction moving rod 46 and pull plate 45 sliding, pull plate 45 in the process of sliding hook power cord, with the bidirectional screw rod 43 constantly forward and reverse rotation pull plate 45, and slowly pull the power cord change position evenly winding on the rocker 36;

[0040] By setting the repair device 5, in use, after detecting the leakage site, move the leakage to the insulating tape 54, pull the insulating tape 54 to wrap the leakage, then press the pressure bar 58, the pressure bar 58 extrusion blade 56 cutting the excess tape, release the pull rod, spring 57 lose the bondage of elastic extrusion blade 56 reset, when the tape is used up, pull the limit rod 53 from the sleeve rod 52, that is, the insulating tape 54 can be taken off from the sleeve rod 52, and re-replacement.

[0041] The electrical components in this paper are connected with the main controller and 220V mains, and the main controller can be a computer and other known devices for control.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for the limitation of the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for the skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A high-precision real-time detection device for power supply leakage current, comprising a base (1), a detector (2) and a precise detection device (3), characterized in that: The detector (2) is fixedly connected to the base (1), and the precise detection device (3) is arranged on the surface of the base (1); The precise detection device (3) comprises a circular frame (33), the circular frame (33) is fixedly connected to the base (1), the inner wall of the circular frame (33) is rotatably connected to a first circular wheel (34), the end of the circular frame (33) close to the first circular wheel (34) is rotatably connected to a second circular wheel (35), a conductive sleeve (32) is fixedly connected to a side of the base (1) close to the circular frame (33), one end of the conductive sleeve (32) is fixedly connected to a detection line (31), the end of the detection line (31) away from the conductive sleeve (32) is electrically connected to the detector (2), and a threading hole is provided at the center of the conductive sleeve (32).

2. The high-precision real-time detection device for power supply leakage current according to claim 1, characterized in that: One end of the detector (2) is fixedly connected to a fixed rod (37), the surface of the fixed rod (37) is rotatably connected to a rocker (36), and one end of the rocker (36) is fixedly connected to a handle (39).

3. The high-precision real-time detection device for power supply leakage current according to claim 2, characterized in that: A plastic clip (310) is fixedly connected to the lower surface of the rocker (36), and there are two plastic clips (310), which are symmetrically arranged.

4. The high-precision real-time detection device for power supply leakage current according to claim 3, characterized in that: A threaded hole is provided on the upper surface of the fixing rod (37), and a screw rod (38) is threadedly connected to the inner wall of the threaded hole on the upper surface of the fixing rod (37), and the screw rod (38) is in contact with the rocker (36).

5. The high-precision real-time detection device for power supply leakage current according to claim 1, characterized in that: The detector (2) is provided with a hooking device (4) at one end close to the rocker (36), and the hooking device (4) includes an assembly sleeve (42), the assembly sleeve (42) is fixedly connected to the detector (2), a micro motor (41) is fixedly connected to the surface of the assembly sleeve (42), and a driving end of the micro motor (41) is fixedly connected to a bidirectional threaded rod (43), and a sliding groove is provided on one side of the detector (2) close to the bidirectional threaded rod (43), and a moving rod (46) is slidably connected to the inner wall of the sliding groove on one side of the detector (2).

6. The high-precision real-time detection device for power supply leakage current according to claim 5, characterized in that: A threaded ring (44) is fixedly connected to the surface of the moving rod (46), and the threaded ring (44) is threadedly connected to the bidirectional threaded rod (43).

7. The high-precision real-time detection device for power supply leakage current according to claim 6, characterized in that: A pull plate (45) is fixedly connected to the lower surface of the threaded ring (44), and there are two pull plates (45), which are symmetrically arranged.

8. The high-precision real-time detection device for power supply leakage current according to claim 1, characterized in that: A repair device (5) is provided at one end of the detector (2), and the repair device (5) comprises a connecting plate (51), the connecting plate (51) is fixedly connected to the detector (2), a sleeve rod (52) is fixedly connected to the surface of the connecting plate (51), an insulating tape (54) is sleeved on the surface of the sleeve rod (52), a limiting hole is provided on the surface of the sleeve rod (52), and a limiting rod (53) is inserted into the inner wall of the limiting hole on the surface of the sleeve rod (52).

9. The high-precision real-time detection device for power supply leakage current according to claim 8, characterized in that: The detector (2) is fixedly connected to a knife holder (55) on one side close to the insulating tape (54), a strip hole is provided on the surface of the knife holder (55), a blade (56) is inserted on the upper surface of the knife holder (55), a pressure rod (58) is fixedly connected to the upper surface of the blade (56), one end of the blade (56) is fixedly connected to a spring (57), and the end of the spring (57) away from the blade (56) is fixedly connected to the knife holder (55).

10. A high-precision real-time detection method for power supply leakage current according to any one of claims 1 to 9, characterized in that: S1. When detecting the leakage part of the power line, the detector (2) is turned on, and the power line is passed through the round frame (33) and the conductive sleeve (32). Finally, the plastic clip (310) is used to clamp the power line and fix it. Then, the screw rod (38) is rotated to disengage the rocker (36). At this time, the handle (39) is grasped. The handle (39) drives the rocker (36) to rotate. The power line is wound while the rocker (36) rotates. During the winding process of the power line, the first round wheel (34) and the second round wheel (35) rotate and slowly pull the power line through the conductive sleeve (32). When the power line is in a normal state, the insulating leather sleeve on the surface of the power line prevents power leakage. When the insulating leather is broken, electricity will leak. When the leakage passes through the iron conductive sleeve (32), the electricity passes through the conductive sleeve (32) and the detection line (31) and is finally transported to the detector (2). The detector (2) receives the electrical signal and can determine the leakage position. S2. When the rocker (36) pulls the power cord to reel in, the pull plate (45) is located below the power cord, the motor is started, and the motor drives the bidirectional threaded rod (43) to rotate. The bidirectional threaded rod (43) rotates while driving the threaded ring (44). The threaded ring (44) pulls the movable rod (46) and the pull plate (45) to slide. The pull plate (45) hooks the power cord during the sliding process. As the bidirectional threaded rod (43) continuously rotates in the forward and reverse directions, the pull plate (45) is driven and the power cord is slowly pulled to change its position and evenly wind around the rocker (36). S3. After detecting the leakage part, move the leakage part to the insulating tape (54), pull the insulating tape (54) to wrap the leakage part, then press the pressure rod (58), the pressure rod (58) squeezes the blade (56) to cut the excess tape, loosen the pull rod, the spring (57) loses its restraint and generates elastic force to squeeze the blade (56) to reset, when the tape is used up, pull the limit rod (53) to separate from the sleeve rod (52), and then the insulating tape (54) can be removed from the sleeve rod (52) and replaced.

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