Over-limit self-detaching insulating rod voltage-withstanding detection device and detection method thereof

Abstract

The application discloses an over-limit self-detaching insulating rod voltage-withstanding detection device and a detection method thereof. The device comprises a first clamping seat and a second clamping seat. The first clamping seat comprises a first base and a first clamping plate located on the upper side of the first base. A steel wire rope winding and unwinding device is mounted on the lower side of the first base. The steel wire rope winding and unwinding device is electrically connected with a clamping piece on the first base. A suction block is mounted on the end of the steel wire rope of the steel wire rope winding and unwinding device. The device further comprises a leakage current monitoring device located below the first clamping seat. The leakage current monitoring device comprises a shell. An electromagnet and a current controller are mounted on the shell. One of the input terminals of the current controller is used for connecting to high voltage. The other terminal is connected with the core of the electromagnet. The two terminals of the control terminal of the current controller are connected in series on the circuit for supplying power to the electromagnet. During detection, if the leakage current of one of the insulating rods exceeds the threshold value, the high voltage of the insulating rod can be quickly and effectively disconnected, and the detection of other insulating rods can still be completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power tool pressure detection equipment, in particular to an over-limit self-detaching insulating rod pressure detection device and a detection method thereof. BACKGROUND

[0002] Insulating rods need to be tested for pressure every year to test the insulating performance of the insulating rods and provide installation protection for high-voltage operation personnel. Chinese patent document CN110514880A discloses a pressure detection device for long rod type insulating tools, which has a plurality of first supports; the first support is composed of a base, two insulating supports and a conductive support, the same side of the base of the first support is provided with an open slot, and the slide rail simultaneously passes through the open slots on the upper ends of the bases of all the first supports; wherein the conductive support is composed of an upper support plate, an upper clamping component, a lower clamping component and a lower support plate, the upper clamping component and the lower clamping component are wave-shaped and have the same shape and are symmetrically placed. Its advantages are that it solves the problems of needing to connect wires at both ends of the insulating rod body for insulating rod pressure testing, the insecurity of using a winding connection method, and the need to measure the distance between the two ends of the wires each time. Its disadvantage is that as the voltage increases, if the insulating performance of one of the insulating rods decreases, when the leakage current exceeds the threshold value, the high voltage of this insulating rod cannot be quickly and effectively disconnected, and only the high-voltage power supply device can be turned off to interrupt the detection. And the other insulating rods have not completed the detection and need to be re-detected. SUMMARY

[0003] To solve the current technical problems, the main purpose of the present application is to provide an over-limit self-detaching insulating rod pressure detection device and a detection method thereof, so as to quickly and effectively disconnect the high voltage of one of the insulating rods when the leakage current of the insulating rod exceeds the threshold value during detection, and the other insulating rods can still complete the detection.

[0004] In order to overcome the problems existing in the prior art, the technical scheme adopted by the present application is: a kind of overrunning self-detaching insulating rod withstand voltage detection device, including first clamping seat and second clamping seat, first clamping seat and second clamping seat are provided with the clamping piece for clamping insulating rod, first clamping seat includes first base and the first clamping plate located in the upper side of first base, the side opposite of first base and first clamping plate is respectively corresponding at least one clamping piece is installed, clamping piece is conductive, clamping piece is insulatedly connected with first base, first clamping plate, the insulating installation of first base lower side has steel wire rope take-up device, steel wire rope take-up device is electrically connected with the clamping piece on first base, the end of steel wire rope of steel wire rope take-up device is installed with suction block;It also includes the leakage current monitoring device located below first clamping seat, the leakage current monitoring device includes shell, electromagnet and current controller are installed on shell, one of the terminals of current controller input end is used to access high voltage, another terminal is connected with the core of electromagnet, the two terminals of current controller control end are connected in series on the circuit for supplying power to electromagnet.

[0005] The core of the electromagnet is installed with an insulating layer, and the insulating layer is installed with a fixed plate.

[0006] The steel wire rope take-up device includes a housing, a central shaft is installed in the housing, a take-up reel is sleeved on the central shaft, the inner hole of the take-up reel is connected with the central shaft through a coil spring, one end of the steel wire rope is fixed and wound on the take-up reel, and the other end of the steel wire rope extends out of the housing and is installed with a suction block.

[0007] The inner wall of the housing is fixedly installed with a conductive spring plate, and the conductive spring plate abuts against one side of the take-up reel.

[0008] A plurality of first insulating groove blocks are installed on the upper side of the first base in intervals, second insulating groove blocks are installed on the lower side of the first clamping plate corresponding to the positions of the first insulating groove blocks, and the clamping pieces are installed in the first insulating groove blocks and the second insulating groove blocks.

[0009] The clamping piece is conductive foam, a conductive groove block is also installed in the first insulating groove block on the first base, the clamping piece is installed in the conductive groove block, and the conductive groove block is electrically connected with the steel wire rope take-up device through a connecting cable.

[0010] The second clamping seat includes a second base and a second clamping plate, one end of the second clamping plate is hinged to one end of the second base, and the other end of the second clamping plate is detachably connected to the other end of the second base;The second base is provided with a third groove in intervals, the clamping piece is installed in the third groove, the fourth groove is provided on the lower side of the second clamping plate corresponding to the position of the third groove, and the clamping piece is also installed in the fourth groove;The second base is installed with a grounding terminal.

[0011] The second clamping seat is provided with two, two second clamping seats are located on the two sides of the first clamping seat, the first clamping seat is installed on the first support seat through the first insulating rod, the second clamping seat is installed on the second support seat through the second insulating rod, and the leakage current monitoring device is installed on the first insulating rod, and the first support seat is fixedly installed on the upper side of the middle of the bottom frame, and at least two guide rails are installed between the two sides of the first support seat and the bottom frame, and the lower side of the second support seat is provided with a sliding seat, and the two second support seats are slidably installed on the guide rails on the two sides of the first support seat through the sliding seat.

[0012] The first support seat is also provided with a driver, and the output shafts on the two sides of the driver are respectively connected with lead screws, one side of the lead screw is a positive tooth, and the other side of the lead screw is a reverse tooth, and the lower sides of the two second support seats are respectively provided with nut seats, and the nut seats on the two sides are respectively connected with the lead screws on the two sides.

[0013] A detection method for pressure detection of an insulating rod, which adopts the ultra-limit self-detaching insulating rod pressure detection device, and comprises the following steps:

[0014] S1, clamping the insulating rod on the first clamping seat and the second clamping seat;

[0015] S2, electrically connecting the high-voltage output end of the high-voltage power supply device with one terminal of the current controller, and grounding the second clamping seat;

[0016] S3, the current controller adopts a normally closed type, the electromagnet is connected to the power supply, then the suction block is pulled down, and the suction block is adsorbed on the electromagnet;

[0017] S4, the high-voltage power supply device is started, if the insulation performance of the insulating rod decreases, the current flows through the current controller, the electromagnet, the suction block, the steel wire rope, then flows to the insulating rod through the clamping piece on the first base, and then flows to the ground through the second clamping seat, the current controller displays the leakage current, when the leakage current exceeds the threshold value, the control end of the current controller is disconnected, the electromagnet loses power, the steel wire rope retraction device quickly retracts the steel wire rope, and the high-voltage loop is disconnected.

[0018] The application has the following beneficial effects:

[0019] 1. When the detection device is used to detect the insulating rod, the two ends of the insulating rod are clamped on the first clamping seat and the second clamping seat respectively, the high-voltage output end of the high-voltage power supply device is electrically connected with one terminal of the current controller, and the second clamping seat is grounded. After the electromagnet is powered on, the suction block is pulled down and adsorbed on the electromagnet. The high-voltage power supply device is started, if the insulation performance of the insulating rod decreases, the current flows through the current controller, the electromagnet, the suction block, the steel wire rope, and then flows to the insulating rod through the clamping piece on the first base, and then flows to the ground through the second clamping seat, the current controller displays the leakage current, when the leakage current exceeds the threshold value, the control end of the current controller is disconnected, the electromagnet loses power, and the steel wire rope retraction device quickly retracts the steel wire rope, and the high-voltage loop is disconnected. When detecting a plurality of insulating rods, if the leakage current of one of the insulating rods exceeds the threshold value, the circuit of the corresponding electromagnet is disconnected through the corresponding current controller, so that the high-voltage power supply of the insulating rod is quickly and effectively disconnected, and the other insulating rods can still complete the detection. And because of this structure, it also solves the problem that when the ordinary circuit breaker is used to disconnect the high-voltage power supply, the two contacts cannot be disconnected due to the short distance between the two contacts.

[0020] 2. The position of the second clamping seat on both sides can be adjusted to adapt to insulating rods of different lengths. The first support seat is also provided with a driver, and the electric adjustment of the second clamping seat on both sides is realized. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 It is another perspective structure schematic diagram of the present application.

[0024] Figure 3 It is a structure schematic diagram of the first clamping seat and the leakage current monitoring device of the present application.

[0025] Figure 4 It is a structure schematic diagram of the bottom frame of the present application.

[0026] Figure 5 It is a wiring schematic diagram of the electromagnet and the current controller of the present application.

[0027] Figure 6It is the structural schematic view of the first clamping seat of the application.

[0028] Figure 7 It is the structural schematic view of the first clamping seat of the application. Figure 6 It is the structural schematic view of the first clamping seat of the application.

[0029] Figure 8 It is the structural schematic view of the steel wire rope winding and unwinding device of the application.

[0030] Figure 9 It is the structural schematic view of the second clamping seat of the application.

[0031] Figure 10 It is the structural schematic view of the second clamping seat of the application. Figure 9 It is the structural schematic view of the second clamping seat of the application.

[0032] Reference signs:

[0033] Bottom frame 10, first support seat 11, guide rail 12;

[0034] Second support seat 20, sliding seat 21, nut seat 22;

[0035] Driver 30, lead screw 31;

[0036] First insulating rod 40;

[0037] Second insulating rod 50;

[0038] First clamping seat 60, first base 61, first mounting groove 611, first insulating groove block 612, conductive groove block 613, connecting cable 614, first clamping plate 62, second mounting groove 621, second insulating groove block 622, clamping piece 63, locking plate 64, locking screw 65, steel wire rope winding and unwinding device 66, shell 661, central shaft 662, take-up wheel 663, coil spring 664, steel wire rope 665, suction block 666, conductive spring piece 667;

[0039] Second clamping seat 70, second base 71, third groove 711, second clamping plate 72, fourth groove 721, grounding terminal 73;

[0040] Leakage current monitoring device 80, high-voltage terminal 81, electromagnet 82, insulating layer 821, fixed plate 822, current controller 83,

[0041] Insulating rod 90. DETAILED DESCRIPTION

[0042] The technical solutions of the application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0043] Embodiment 1:

[0044] Referring to Figures 1-10 The embodiment provides an over-limit self-detaching insulating rod voltage-withstanding detection device, which comprises a first clamping seat 60 and a second clamping seat 70, clamping pieces 63 for clamping insulating rods 90 are arranged on the first clamping seat 60 and the second clamping seat 70, the first clamping seat 60 comprises a first base 61 and a first clamping plate 62 located on the upper side of the first base 61, at least one clamping piece 63 is correspondingly mounted on the opposite side of the first base 61 and the first clamping plate 62, the clamping piece 63 is conductive, the clamping piece 63 is insulatively connected with the first base 61 and the first clamping plate 62, a steel wire rope winding and unwinding device 66 is insulatively mounted on the lower side of the first base 61, the steel wire rope winding and unwinding device 66 is electrically connected with the clamping piece 63 on the first base 61, and a suction block 666 is mounted at the end of a steel wire rope 665 of the steel wire rope winding and unwinding device 66; the device further comprises a leakage current monitoring device 80 located below the first clamping seat 60, the leakage current monitoring device 80 comprises a shell, an electromagnet 82 and a current controller 83 are mounted on the shell, one of the input terminals of the current controller 83 is used for accessing high voltage, the other terminal is connected with the core of the electromagnet 82, and the two terminals of the control end of the current controller 83 are connected in series on the circuit for supplying power to the electromagnet 82.

[0045] In the embodiment, the current controller 83 is of a normally closed type, and the electromagnet 82 is connected with the power supply. Figure 5 The electromagnet 82 is connected with the power supply, the suction block 666 is pulled down, the steel wire rope 665 is pulled out, and then the suction block 666 can be adsorbed on the electromagnet 82, so that the high voltage is communicated with the suction block 666.

[0046] The clamping pieces 63 are mounted on the first clamping seat 60 in a spaced and insulated manner, the clamping pieces 63 are used for clamping the insulating rods 90, so that the voltage-withstanding detection of each insulating rod 90 can be performed independently. In the embodiment, the first base 61 and the first clamping plate 62 are made of bakelite and have good insulation. The clamping pieces 63 can be V-shaped grooves, and the clamping pieces 63 are fixed on the first base 61 and the first clamping plate 60 by means of bolts or adhesion. The corresponding clamping pieces 63 on the first base 61 and the first clamping plate 60 clamp the insulating rods 90. The second clamping seat 70 can adopt the conductive support in CN110514880A.

[0047] When detecting, the two ends of the insulating rod 90 are clamped on the first clamp seat 60 and the second clamp seat 70 respectively, the high-voltage output end of the high-voltage power supply device is electrically connected with one terminal of the current controller 83, and the second clamp seat 70 is grounded. After the electromagnet 82 is powered on, the suction block 666 is pulled down and then is adsorbed on the electromagnet 82. The high-voltage power supply device is started, if the insulation performance of the insulating rod 90 is reduced, the current flows through the current controller 83, the electromagnet 82, the suction block 666, the steel wire rope 665, and then flows to the insulating rod 90 through the clamping piece 63 on the first base 61, and then flows to the ground through the second clamp seat 70, the current controller 83 displays the leakage current, when the leakage current exceeds the threshold value, the control end of the current controller 83 is disconnected, the electromagnet 82 loses power, and the steel wire rope winding and unwinding device 66 quickly retracts the steel wire rope 665, and the high-voltage circuit is disconnected.

[0048] When detecting a plurality of insulating rods 90, if the leakage current of one of the insulating rods 90 exceeds the threshold value, the circuit of the corresponding current controller 83 is disconnected to control the corresponding electromagnet 82, so that the high-voltage power supply of the insulating rod is quickly and effectively disconnected, and the other insulating rods can still complete the detection.

[0049] And because of this structure, it also solves the problem that when the ordinary circuit breaker is used to disconnect the high-voltage power supply, the two contacts cannot be disconnected due to the short distance between the two contacts and the arc generated when the two contacts are disconnected.

[0050] In this embodiment, referring to Figure 5 , an insulating layer 821 is installed on the core of the electromagnet 82, a fixed plate 822 is installed on the insulating layer 821, and the other terminal of the input end of the current controller 83 is electrically connected with the fixed plate 822. Through the above structure, the high-voltage point is further isolated from the electromagnet 82, preventing the high-voltage power supply from affecting the electromagnet.

[0051] Referring to Figure 7 , 8 , the steel wire rope winding and unwinding device 66 includes a housing 661, a center shaft 662 is installed in the housing 661, a take-up reel 663 is sleeved on the center shaft 662, the inner hole of the take-up reel 663 is connected with the center shaft 662 through a coil spring 664, one end of a steel wire rope 665 is fixed and wound on the take-up reel 663, and the other end of the steel wire rope 665 extends out of the housing 661 and is provided with a suction block 666; the housing 661 is electrically connected with the clamping piece 63 on the first base 61. Through the above structure, the steel wire rope 665 can be automatically wound.

[0052] It should be noted that in this application, all components in the steel wire rope winding and unwinding device 66 are made of metal materials in order to achieve the effect of conduction.

[0053] Since the two ends of the coil spring 664 are clamped on the central shaft 662 and the take-up wheel 663 when the coil spring 664 is installed, there is a certain influence on the conduction. In order to improve the conduction effect, see Figure 8 A conductive spring plate 667 is fixedly installed on the inner wall of the shell 661, and the conductive spring plate 667 abuts against one side of the take-up wheel 663.

[0054] See Figure 6 , 7 A plurality of first insulating groove blocks 612 are installed on the upper side of the first base 61 in a spaced manner, and a second insulating groove block 622 is installed on the lower side of the first clamping plate 62 corresponding to the position of the first insulating groove block 612. The first insulating groove block 612 and the second insulating groove block 622 are respectively provided with clamping pieces 63. When this structure is adopted, the first base 61 and the first clamping plate 62 can be made of metal structure, which has higher structural strength, and through the installation of the first insulating groove block 612 and the second insulating groove block 622, adjacent clamping pieces 63 can also be insulated and separated.

[0055] Further, the clamping piece 63 is made of conductive foam, and a conductive groove block 613 is also installed in the first insulating groove block 612 on the first base 61. The conductive groove block 613 is electrically connected to the steel wire rope winding and unwinding device 66 through a connecting cable 614.

[0056] Specifically, the clamping piece 63 can be an integral recess structure made of conductive foam, or a recess structure composed of two cylinders. In this embodiment, as shown in Figure 6 , a recess structure composed of two cylinders is adopted. During detection, the insulating rod is placed in the recess between the two cylinders.

[0057] See Figure 9 , 10 The second clamping base 70 includes a second base 71 and a second clamping plate 72. One end of the second clamping plate 72 is hinged to one end of the second base 71, and the other end of the second clamping plate 72 is detachably connected to the other end of the second base 71. The second base 71 is provided with a third recess 711 in a spaced manner, and the third recess 711 is provided with a clamping piece 63. The lower side of the second clamping plate 72 is provided with a fourth recess 721 at a position corresponding to the third recess 711, and the fourth recess 721 is also provided with a clamping piece 63. The second base 71 is provided with a grounding terminal 76. During detection, the grounding terminal 76 is grounded through a wire.

[0058] In this embodiment, the current controller 83 can adopt a current relay.

[0059] See Figure 6, one end of the first clamping plate 62 is hinged to one end of the first base 61, the other end of the first clamping plate 62 is fixedly installed with a locking plate 64, a lock hole is arranged on the locking plate 64, when the first clamping plate 62 is folded with the first base 61, the locking screw 65 is inserted into the lock hole and then screwed with the first base 61 to limit the first clamping plate 62 and the first base 61. Similarly, see Figure 9 , the locking and limiting of the second base 71 of the second clamping seat 70 and the second clamping plate 72 also adopt the same structure.

[0060] Example 2:

[0061] Based on example 1, see Figure 1 , 2 Two second clamping seats 70 are arranged, and the two second clamping seats 70 are respectively located on the two sides of the first clamping seat 60. The first clamping seat 60 is installed on the first support seat 11 through the first insulating rod 40, the second clamping seat 70 is installed on the second support seat 20 through the second insulating rod 50, and the leakage current monitoring device 80 is installed on the first insulating rod 40. It also includes a bottom frame 10, the first support seat 11 is fixedly installed on the upper middle part of the bottom frame 10, at least two guide rails 12 are installed between the two sides of the first support seat 11 and the bottom frame 10, and the lower side of the second support seat 20 is installed with a sliding seat 21. The two second support seats 20 are respectively slidably installed on the guide rails 12 located on the two sides of the first support seat 11 through the sliding seats 21.

[0062] Through the above structure, the positions of the two second clamping seats 70 can be adjusted to adapt to insulating rods 90 of different lengths.

[0063] Further, see Figure 4 The first support seat 11 further comprises a driver 30, the output shafts on both sides of the driver 30 are respectively connected with lead screws 31, one of the lead screws 31 is a positive tooth, and the other lead screw 31 is a reverse tooth. The lower sides of the two second support seats 20 are respectively installed with nut seats 22, and the two nut seats 22 are respectively screwed with the two lead screws 31. Through the above structure, the electric adjustment of the two second clamping seats 70 is realized.

[0064] The driver 30 adopts a symmetrical double-output shaft reduction motor. When the driver 30 rotates, the two lead screws 31 on both sides are driven to rotate synchronously. Since the two lead screws 31 have positive teeth and reverse teeth respectively, the two second support seats 20 on both sides are driven to move synchronously towards or away from each other.

[0065] Example 3:

[0066] Based on example 1 or example 2, a detection method is proposed for pressure detection of the insulating rod 90. The detection method adopts the above-mentioned over-limit self-detaching insulating rod pressure detection device, and comprises the following steps:

[0067] S1, clamping the insulating rod 90 on the first clamp seat 60 and the second clamp seat 70;

[0068] S2, electrically connecting the high-voltage output end of the high-voltage power supply device with one of the terminals of the current controller 83, and grounding the grounding terminal 76 of the second clamp seat 70 through a wire;

[0069] S3, the current controller 83 is of normally closed type, first connecting the electromagnet 82 to the power supply, and then pulling down the suction block 666 to make the suction block 666 adsorbed on the electromagnet 82;

[0070] S4, starting the high-voltage power supply device, if the insulation performance of the insulating rod 90 is reduced, the current flows through the current controller 83, the electromagnet 82, the suction block 666, the steel wire rope 665, and then flows to the insulating rod 90 through the clamping piece 63 on the first base 61, and then flows to the ground through the second clamp seat 70, the current controller 83 displays the leakage current, when the leakage current exceeds the threshold value, the control end of the current controller 83 is disconnected, the electromagnet 82 loses power, the steel wire rope winding and unwinding device 66 quickly retracts the steel wire rope 665, and the high-voltage loop is disconnected.

[0071] The above embodiments are only used to illustrate the present application, and the structure, connection mode and manufacturing process of each component can be changed, any equivalent transformation and improvement based on the technical scheme of the present application should not be excluded from the protection scope of the present application.

Claims

1. A method for testing an over-limit self-detaching insulating rod withstand voltage testing device, used to perform withstand voltage testing on an insulating rod (90), characterized in that, The over-limit self-detaching insulating rod withstand voltage testing device includes a first clamp (60) and a second clamp (70). The first clamp (60) and the second clamp (70) are provided with clamping members (63) for clamping the insulating rod (90). The first clamp (60) includes a first base (61) and a first clamping plate (62) located on the upper side of the first base (61). The device is characterized in that: a plurality of clamping members (63) are respectively installed on the opposite side of the first base (61) and the first clamping plate (62). The clamping members (63) are conductive and are insulated from the first base (61) and the first clamping plate (62). A wire rope winding device (66) is insulated on the lower side of the first base (61). The wire rope winding device (66) is electrically connected to the clamping members (63) on the first base (61). A suction block (666) is installed at the end of the wire rope (665) of the wire rope winding device (66). It also includes a leakage current monitoring device (80) located below the first clamp (60). The leakage current monitoring device (80) includes a housing, on which an electromagnet (82) and a current controller (83) are mounted. One terminal of the input end of the current controller (83) is used to connect to high voltage, and the other terminal is connected to the iron core of the electromagnet (82). The two terminals of the control end of the current controller (83) are connected in series in the circuit that supplies power to the electromagnet (82). An insulating layer (821) is installed on the core of the electromagnet (82), and a fixing plate (822) is installed on the insulating layer (821). Another terminal of the input end of the current controller (83) is electrically connected to the fixing plate (822). The wire rope take-up and take-down device (66) includes a housing (661), a central shaft (662) installed inside the housing (661), a take-up reel (663) fitted on the central shaft (662), the inner hole of the take-up reel (663) being connected to the central shaft (662) by a coil spring (664), one end of the wire rope (665) being fixed and wound on the take-up reel (663), and the other end extending out of the housing (661) and having a suction block (666) installed thereon; the housing (661) is electrically connected to the clamping member (63) on the first base (61); A conductive spring (667) is fixedly installed on the inner wall of the outer casing (661), and the conductive spring (667) abuts against one side of the take-up reel (663). Multiple first insulating slot blocks (612) are installed at intervals on the upper side of the first base (61), and a second insulating slot block (622) is installed on the lower side of the first clamping plate (62) at the position corresponding to the first insulating slot block (612). The clamping member (63) is installed in the first insulating slot block (612) and the second insulating slot block (622) respectively. The second clamp (70) includes a second base (71) and a second clamping plate (72). One end of the second clamping plate (72) is hinged to one end of the second base (71), and the other end of the second clamping plate (72) is detachably connected to the other end of the second base (71). The second base (71) is provided with a third groove (711) spaced apart. A clamping member (63) is installed in the third groove (711). The lower side of the second clamping plate (72) is provided with a fourth groove (721) at the position corresponding to the third groove (711). A clamping member (63) is also installed in the fourth groove (721). A grounding terminal (73) is installed on the second base (71). The detection method includes the following steps: S1. Clamp the insulating rod (90) on the first clamp (60) and the second clamp (70); S2. Connect the high voltage output terminal of the high voltage power supply equipment to one of the terminals of the current controller (83) and ground the second clamp (70); S3. The current controller (83) is normally closed. The electromagnet (82) is powered on, and then the suction block (666) is pulled down to attract the suction block (666) onto the electromagnet (82). S4. When the high-voltage power supply equipment is started, if the insulation performance of the insulating rod (90) is reduced, the current will flow through the current controller (83), electromagnet (82), suction block (666), and wire rope (665), and then through the clamping part (63) on the first base (61) to the insulating rod (90), and then through the second clamp (70) to the ground. The current controller (83) displays the leakage current. When the leakage current exceeds the threshold, the control terminal of the current controller (83) is disconnected, the electromagnet (82) is de-energized, the wire rope winding and unwinding device (66) quickly retracts the wire rope (665), and the high-voltage circuit is disconnected. When testing multiple insulating rods (90), if the leakage current of one of the insulating rods (90) exceeds the threshold, the circuit of the corresponding electromagnet (82) is disconnected by the corresponding current controller (83), thereby quickly and effectively disconnecting the high voltage of the insulating rod, while the other insulating rods (90) can still be tested.

2. The detection method of the over-limit self-detachment insulating rod withstand voltage detection device according to claim 1, characterized in that: The clamping member (63) is conductive foam. A conductive groove block (613) is also installed in the first insulating groove block (612) on the first base (61). The clamping member (63) is installed in the conductive groove block (613). The conductive groove block (613) is electrically connected to the wire rope winding and unwinding device (66) through the connecting cable (614).

3. The detection method of the over-limit self-detachment insulating rod withstand voltage detection device according to claim 1, characterized in that: There are two second clamps (70), which are located on both sides of the first clamp (60). The first clamp (60) is mounted on the first support (11) via the first insulating rod (40), and the second clamp (70) is mounted on the second support (20) via the second insulating rod (50). The leakage current monitoring device (80) is mounted on the first insulating rod (40). It also includes a bottom frame (10), the first support (11) is fixedly installed on the upper middle part of the bottom frame (10), at least two guide rails (12) are installed between the two sides of the first support (11) and the bottom frame (10), and a slide (21) is installed on the lower side of the second support (20). The two second support (20) are slidably installed on the guide rails (12) on both sides of the first support (11) through the slide (21).

4. The detection method of the over-limit self-detachment insulating rod withstand voltage detection device according to claim 3, characterized in that: The first support base (11) is also equipped with a driver (30). The output shafts on both sides of the driver (30) are respectively connected to lead screws (31). One lead screw (31) is a positive thread and the other lead screw (31) is a negative thread. Nut seats (22) are respectively installed on the lower side of the second support base (20) on both sides. The nut seats (22) on both sides are respectively engaged with the lead screws (31) on both sides.

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