A fully automatic live testing device and method for lightning arresters

Abstract

The present invention relates to a fully automatic live testing device and method for lightning arresters, including an insulating rod assembly, a base assembly, a clamping assembly, and a detection mechanism. The insulating rod assembly is used to send the base assembly beside the lightning arrester. The base assembly is used to set the clamping assembly. The clamping assembly is used to clamp the lightning arrester. The detection mechanism is used to connect to the high-voltage terminal of the lightning arrester and conduct detection. By setting a pair of clamping petals, the testing device inserts them below the umbrella skirt at the highest position, and tightens them inward on the surface of the lightning arrester through a second elastic member. After being locked by a one-way locking member, the clamping petals move upward to press the umbrella skirt to obtain a clamping force, and cooperate with a lapping rod to form a fixed clamping and fixing effect, preventing shaking during detection and resulting in poor contact, and improving the stability of the data acquisition process.

Description

Technical Field

[0001] The present invention belongs to the technical field of arrester detection, and particularly relates to a full-automatic live testing device and method for arresters. Background Art

[0002] The main function of an arrester is to prevent overvoltage generated by lightning from invading a substation or other buildings along the line. Its main structure generally includes an arrester body, umbrella skirts, high-voltage terminals, and a discharge counter. When performing live detection on an arrester, it is generally necessary to obtain the voltage phase data of the high-voltage terminal and the mutual inductance current signal between the arrester and the discharge counter, and judge the performance of the arrester after being processed by a detector.

[0003] During the test, the operator needs to maintain a safe distance. Therefore, existing detection devices generally use insulating rods for operation to obtain voltage phase data and current signals. The Chinese invention patent with the application number 202010411376.7 discloses a live detection device for arresters, which forms an annular area around the high-voltage terminal lead wire through an arc-shaped rod and a connecting rod for voltage detection. Although this method will not fall off, the shape of the high-voltage terminal lead wire is irregular, and its annular area is not in close contact and fixation with the high-voltage terminal lead wire. When the operator is far away from the insulating rod, the insulating rod may shake, resulting in poor contact or even disconnection, affecting the acquisition of voltage phase signals. Summary of the Invention

[0004] The purpose of the present invention is to provide a full-automatic live testing device and method for arresters in order to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] A full-automatic live testing device for arresters, comprising

[0007] an insulating rod assembly for sending the base assembly to the side of the arrester;

[0008] a base assembly for setting a clamping assembly, including a base body, a pair of slide rails provided on the side surface of the base body, and a pair of sliding sleeves sliding on the slide rails. A second elastic member for pushing the two sliding sleeves to move towards the center is provided on the slide rails, and a releasable one-way locking member is provided between the sliding sleeves and the slide rails. The one-way locking member is used to limit the sliding sleeve to only move towards the center;

[0009] a clamping assembly for clamping the arrester, including clamping petals provided on the sliding sleeves. Support rods are hingedly provided on the surfaces of the two clamping petals. After the heads of the two support rods abut against each other, they are used to prevent the sliding sleeve from moving towards the center;

[0010] The detection mechanism is used to connect the high-voltage terminal of the lightning arrester and perform detection, including a detector and a lap rod arranged on the base body. The lap rod presses the high-voltage terminal downward through a driving structure to cooperate with the clamping petal to abut the umbrella skirt to form a fixation.

[0011] As a further optimization scheme of the present invention, each of the sliding sleeves corresponds to two sliding rails, and a pair of parallel holes are arranged on the surface of the sliding sleeve for respectively passing through the two sliding rails. The two ends of the second elastic member are respectively abutted against the surface of the sliding sleeve and the end of the sliding rail. In order to improve the stability of the sliding sleeve during sliding, each sliding sleeve is guided by two sliding rails so that the clamping petals can be stably stressed during the clamping process.

[0012] As a further optimization scheme of the present invention, the base assembly is slidably set on the top of the insulating rod assembly, wherein the insulating rod assembly includes a base rod and a lifting rod arranged in the base rod for lifting the base assembly upward. In order to improve the convenience of operation, this scheme is achieved by sliding the base assembly on the top of the insulating rod assembly, and also providing a lifting rod as a driving source to facilitate lifting through the lifting drive part.

[0013] As a further optimization scheme of the present invention, the base rod and the lifting rod are made of insulating material, and a lifting drive unit is provided at the bottom of the base rod to drive the lifting rod. This scheme enables the base rod and the lifting rod to meet the insulation requirements by setting the lifting drive unit at the bottom of the base rod to keep it away from the high-voltage area.

[0014] As a further optimization scheme of the present invention, a base with an adjustable initial height is provided at the bottom of the base rod. In this scheme, a suitable height is obtained by providing a base with an adjustable initial height, which facilitates the automatic fixation of the test device.

[0015] As a further optimization scheme of the present invention, the one-way locking piece is unlocked by driving a toggle piece arranged on the clamping petal, wherein a bevel tooth groove is opened on the surface of the slide rail, a sliding portion is slidably arranged in the sliding sleeve, the one-way locking piece is arranged in the sliding portion, and a reset piece is also arranged in the sliding sleeve, which is used to enable the sliding portion to drive the one-way locking piece to leave the bevel tooth groove, a rotating rod is arranged in the clamping petal, and the surfaces of the rotating rod and the sliding portion are mutually provided with bevel tooth protrusions, the bevel tooth protrusions are used to push the sliding portion to drive the one-way locking piece to enter the bevel tooth groove when the rotating rod rotates, and a torsion spring is arranged on the surface of the rotating rod for maintaining the potential energy in the above-mentioned rotation direction, the toggle piece is arranged on the rotating rod, and the toggle piece is toggled by the upper umbrella skirt to drive the rotating rod to rotate.

[0016] Since lightning arresters are generally installed at a certain height, it is difficult for operators below to align the clamping petals to the appropriate clamping positions. Therefore, a toggling member is provided to sense the umbrella skirt of the lightning arrester. Supported by the upper umbrella skirt, the toggling member drives the rotating rod to rotate so that the one-way locking member does not function, and the clamping petals can slide freely. When there is no upper umbrella skirt, the one-way locking member locks, and the clamping petals can only move unidirectionally towards the center to clamp the lower surface of the uppermost umbrella skirt.

[0017] As a further optimized solution of the present invention, a hinge seat and a hinge member are provided at the top of the base body. The overlapping rod is arranged on the hinge member, and an extension arm is further arranged inside the hinge member. The driving structure includes a sliding rod arranged inside the base body for pushing the extension arm. The sliding rod is pushed by a lifting rod, and a first elastic member is further arranged between the lifting rod and the base body. This solution is to enable the overlapping rod to have a fixing ability and to obtain a clamping ability through the combined drive of the lifting rod. Moreover, the lifting drive part of the lifting rod is arranged below the base rod to maintain a safe distance.

[0018] As a further optimized solution of the present invention, there are a pair of overlapping rods, each fixedly connected to an extension arm. Each pair of overlapping rods and the extension arm are rotatably connected to the hinge member through a shaft rod. The shaft rod is perpendicular to the hinge axis of the hinge member. Among them, a convex rod is arranged on the side surface of the sliding rod. The convex rod is frustum-shaped and is used for the pair of overlapping rods and the extension arm to rotate along the shaft rod after rotating along the hinge member. Further, in order to enable the overlapping rod to not only have a downward pressing ability but also have a centering clamping ability, when the overlapping rod rotates and rests on the high-voltage terminal, the continuous upward movement of the sliding rod will cause the convex rod to squeeze upward. The two extension arms have a tendency to open outward along the shaft rod, and then the overlapping rod has a tendency to clamp inward.

[0019] In order to apply the above test device, the present invention also proposes a method for live testing a lightning arrester based on the above test device, including the following steps:

[0020] S1: Open the clamping petals through the support rod, place the clamping petals at the lower end of the uppermost umbrella skirt. Blocked by the lightning arrester, the support rods are pushed apart and no longer abut and support each other, so that the clamping petals are buckled under the umbrella skirt, and the overlapping rod presses the high-voltage terminal from top to bottom to complete the overlapping.

[0021] S2: Set a current transformer between the lightning arrester and its discharge counter to obtain the current signal flowing through the lightning arrester under the operating state.

[0022] S3: Obtain the voltage phase data of the high-voltage terminal through the detector, process the current signal obtained in step S2 and combine it with the voltage phase data to obtain the resistive current flowing through the lightning arrester under the operating state, so as to judge the performance of the lightning arrester.

[0023] The beneficial effects of the present invention are as follows:

[0024] In the present invention, a pair of clamping petals are provided, which are inserted under the highest umbrella skirt and tightened inward on the surface of the lightning arrester through a second elastic member. After being locked by a one-way locking member, the clamping petals move upward to press the umbrella skirt to obtain a clamping force, and cooperate with the overlapping rod to form a fixed clamping effect, preventing shaking during detection and resulting in poor contact, and improving the stability of the data acquisition process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 is a schematic sectional structure diagram of the present invention;

[0027] Figure 3 is a top view of the base assembly and the clamping assembly of the present invention;

[0028] Figure 4 is of the present invention Figure 1 enlarged view of the structure of part A;

[0029] Figure 5 is of the present invention Figure 2 enlarged view of the structure of part A1;

[0030] Figure 6 is of the present invention Figure 3 enlarged view of the structure of part B;

[0031] Figure 7 is of the present invention Figure 6 enlarged view of the structure of part C;

[0032] Figure 8 is of the present invention Figure 5 schematic diagram of the second embodiment from a perspective;

[0033] Figure 9 is of the present invention Figure 8 schematic diagram in the D-D direction;

[0034] Figure 10 is a side view of the clamping assembly of the present invention before clamping;

[0035] Figure 11 is a side view of the clamping assembly of the present invention after clamping;

[0036] In the figure: 1. Insulating rod assembly; 11. Base; 12. Base rod; 13. Lifting drive unit; 14. Lifting rod; 15. First elastic member; 2. Base seat assembly; 21. Base body; 22. Slide rail; 23. Slide sleeve; 24. Second elastic member; 25. Helical groove; 26. Sliding part; 27. Reset member; 28. One-way locking member; 3. Clamping assembly; 31. Mounting part; 32. Clamping flap; 33. Support rod; 34. Rotating rod; 35. Torsion spring; 36. Helical protrusion; 37. Poking member; 4. Detection mechanism; 41. Detector; 42. Lapping rod; 43. Hinge seat; 44. Hinge member; 45. Slide rod; 46. Convex rod; 47. Extension arm; 48. Shaft rod; 5. Lightning arrester; 51. Umbrella skirt; 52. High-voltage terminal. Detailed implementation mode

[0037] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation modes are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0038] Embodiment 1

[0039] As Figure 1-7 shown, a fully automatic live testing device for lightning arresters includes

[0040] an insulating rod assembly 1 for sending the base seat assembly 2 beside the lightning arrester 5;

[0041] a base seat assembly 2 for setting the clamping assembly 3, including a base body 21, a pair of slide rails 22 arranged on the side surface of the base body 21, and a pair of slide sleeves 23 sliding on the slide rails 22. A second elastic member 24 for pushing the two slide sleeves 23 to move towards the center is arranged on the slide rails 22. The second elastic member 24 can be set as a spring, and a releasable one-way locking member 28 is arranged between the slide sleeve 23 and the slide rail 22. The one-way locking member 28 is used to limit the slide sleeve 23 to only move towards the center;

[0042] a clamping assembly 3 for clamping the lightning arrester 5, including clamping flaps 32 arranged on the slide sleeves 23. Support rods 33 are hingedly arranged on the surfaces of the two clamping flaps 32. After the heads of the two support rods 33 abut against each other, they are used to prevent the slide sleeve 23 from moving towards the center;

[0043] a detection mechanism 4 for connecting to the high-voltage terminal 52 of the lightning arrester 5 and performing detection, including a detector 41 and a lapping rod 42 arranged on the base body 21. The lapping rod 42 presses down the high-voltage terminal 52 through a driving structure to cooperate with the clamping flap 32 to abut against the umbrella skirt 51 to form a fixation.

[0044] In this solution, a pair of clamping petals 32 are set to be inserted under the umbrella skirt 51 at the highest position, and are tightened inward on the surface of the lightning arrester 5 through the second elastic member 24. After being locked by the one-way locking member 28, the clamping petals 32 move upward to press the umbrella skirt 51 to obtain a clamping force, cooperating with the overlapping rod 42 to form a fixed clamping effect, preventing shaking during detection and resulting in poor contact, and improving the stability of the data acquisition process.

[0045] To improve the stability of the sliding sleeve 23 during the sliding process, each sliding sleeve 23 corresponds to two slide rails 22. A pair of parallel holes are provided on the surface of the sliding sleeve 23 for passing through the two slide rails 22 respectively. The two ends of the second elastic member 24 are respectively abutted against the surface of the sliding sleeve 23 and the end of the slide rail 22. Each sliding sleeve 23 is guided by the two slide rails 22 so that the clamping petals 32 can be stressed stably during the clamping process. Specifically, the slide rails 22 are parallel to each other and extend outwards from both sides of the base body 21.

[0046] The base assembly 2 is slidably arranged on the top of the insulating rod assembly 1. The insulating rod assembly 1 includes a base rod 12 and a lifting rod 14 arranged in the base rod 12 for jacking up the base assembly 2 upwards. The base rod 12 and the lifting rod 14 are made of insulating materials, and a lifting driving part 13 is arranged at the bottom of the base rod 12 to drive the lifting rod 14. To improve the operation convenience, in this solution, the base assembly 2 is slidably arranged on the top of the insulating rod assembly 1, and a lifting rod 14 is also provided as a driving source, so as to be jacked up through the lifting driving part 13. As a feasible implementation manner, the lifting driving part 13 includes a threaded rod coaxially fixed with the lifting rod 14, a threaded barrel for driving the threaded rod to lift, and a motor. The lifting rod 14 is limited to only lift and not rotate.

[0047] Furthermore, to improve the automatic clamping function of this testing device, a base 11 with an adjustable initial height is arranged at the bottom of the base rod 12, which is used to adjust the height of the base rod 12 to be close to the lightning arrester 5. Preferably, the base 11 can also be provided with a stabilizing structure.

[0048] When the operator actually uses it, since the lightning arrester 5 is generally installed at a certain height, it is difficult for the operator to align the clamping petal 32 with the appropriate clamping position from below. In order to solve this problem, the base assembly 2 can automatically find the topmost umbrella skirt 51 as the clamping support position. In this solution, the one-way locking member 28 is unlocked by driving the toggle member 37 arranged on the clamping petal 32, wherein the surface of the slide rail 22 is provided with an oblique tooth groove 25, a sliding portion 26 is slidably arranged in the sliding sleeve 23, the one-way locking member 28 is arranged in the sliding portion 26, and the sliding sleeve 23 A reset member 27 is also provided inside, which is used to make the sliding portion 26 drive the one-way locking member 28 to leave the oblique tooth groove 25. A rotating rod 34 is provided in the clamping petal 32. The surfaces of the rotating rod 34 and the sliding portion 26 are mutually provided with oblique tooth protrusions 36. The oblique tooth protrusions 36 are used to push the sliding portion 26 to drive the one-way locking member 28 to enter the oblique tooth groove 25 when the rotating rod 34 rotates. A torsion spring 35 is provided on the surface of the rotating rod 34 to maintain the potential energy in the above-mentioned rotation direction. A toggle member 37 is provided on the rotating rod 34. The toggle member 37 is toggled by the upper umbrella skirt 51 to drive the rotating rod 34 to rotate.

[0049] In this solution, a toggle member 37 is provided to sense the shed of the arrester 5. Under the support of the upper shed 51, the toggle member 37 drives the rotating rod 34 to rotate so that the one-way locking member 28 does not work, and the clamping petal 32 can slide freely. When there is no shed 51 above, the one-way locking member 28 is locked, and the clamping petal 32 can only move one-way toward the center, thereby clamping the lower surface of the uppermost shed 51. Specifically, Figure 3 and Figure 11 As shown, when the clamping petal 32 is pushed and clamped on the arrester 5 by the second elastic member 24, the toggle member 37 is blocked by the upper umbrella skirt 51. Figure 10 becomes Figure 11 In the state, the toggle member 37 drives the rotating rod 34 to rotate, such as Figure 3 , 6 As shown in Figure 7, after the rotating rod 34 rotates, the oblique tooth protrusion 36 no longer abuts the sliding part 26. The sliding part 26 can slide toward the rotating rod 34 under the push of the reset member 27, and the one-way locking member 28 leaves the oblique tooth groove 25. The sliding sleeve 23 can slide freely in both directions on the slide rail 22. When the base assembly 2 rises, the clamping petal 32 opens and closes freely to pass over the umbrella skirt 51 upward. When the clamping petal 32 is located below the highest umbrella skirt 51, there is no umbrella skirt 51 to block the toggle member 37, and the rotating rod 34 is reset under the drive of the torsion spring 35. The rotating rod 34 has an angle limit. When resetting, the oblique tooth protrusion 36 just squeezes the sliding part 26 away, and the one-way locking member 28 enters the oblique tooth groove 25, so that the sliding sleeve 23 can only move toward the center, thereby The clamping petal 32 is locked. In this way, the clamping position can be automatically found without visual operation.

[0050] The lap rod 42 needs to be driven by an electrical appliance to complete the clamping action. In this solution, in order to keep the electrical appliance away from the high-voltage terminal 52, the lifting rod 14 is used for joint driving. A hinge seat 43 and a hinge 44 are provided on the top of the base body 21. The lap rod 42 is provided on the hinge 44, and an extension arm 47 is also provided in the hinge 44. The driving structure includes a slide rod 45 slidably provided in the base body 21 for pushing the extension arm 47. The slide rod 45 is pushed by the lifting rod 14. A first elastic member 15 is also provided between the lifting rod 14 and the base body 21. The first elastic member 15 can It is set as a spring. In this solution, the lifting rod 14 first drives the base body 21 to move upward through the first elastic member 15 to find a suitable clamping position. When the clamping flap 32 is locked and no longer moves upward, the base body 21 also stops moving upward, and the overlapping rod 42 reaches the clamping position. The lifting rod 14 continues to rise and compresses the first elastic member 15, and after contacting the sliding rod 45, it pushes the sliding rod 45 upward. The first elastic member 15 plays a role of first lifting the base body 21 and then lifting the sliding rod 45. The sliding rod 45 pushes up the extension arm 47 to press the overlapping rod 42 onto the high-voltage terminal 52.

[0051] In order to apply the above-mentioned test device, the present invention also proposes a method for performing live testing on a lightning arrester based on the above-mentioned test device, comprising the following steps:

[0052] S1: The clamping petal 32 is opened by the support rod 33, and the clamping petal 32 is placed in the lower end of the uppermost shed 51. Under the obstruction of the lightning arrester 5, the support rod 33 is pushed away and no longer abuts against each other for support, so that the clamping petal 32 is fastened under the shed 51, so that the lap rod 42 presses the high-voltage terminal 52 from top to bottom to complete the lap;

[0053] S2: a current transformer is arranged between the arrester 5 and its discharge counter to obtain a current signal flowing through the arrester in the operating state;

[0054] S3: The voltage phase data of the high voltage terminal 52 is obtained through the detector 41, and the current signal obtained in step S2 is processed and combined with the voltage phase data to obtain the resistive current flowing through the arrester in the operating state, so as to judge the performance of the arrester.

[0055] The implementation method is specifically as follows: During the preparation work, pull the two sliding sleeves 23 to the outermost side to make the distance between the two clamping flaps 32 the largest. Rotate the support rod 33 until the ends are aligned and abutted to prevent the sliding sleeve 23 from moving towards the center. Hold the insulating rod assembly 1 by hand to make the clamping flap 32 reach the height of the lightning arrester 5, and horizontally move the clamping flap 32 to insert it into the lightning arrester 5. The support rod 33 is pushed away by the lightning arrester 5 and no longer supports the clamping flap 32, while the sliding sleeve 23 is pushed by the second elastic member 24 to make the clamping flap 32 clamp the lightning arrester 5. Adjust the height of the base 11 so that the base 11 touches the ground, and then the personnel withdraw. By controlling the operation of the lifting drive unit 13, the base assembly 2 is lifted. When the base assembly 2 rises to a position where the clamping flap 32 is below the uppermost umbrella skirt 51, stop lifting. Then the lifting rod 14 continues to rise to push the sliding rod 45 to rise, driving the overlapping rod 42 to clamp the high-voltage terminal 52. Control the lifting drive unit 13 to stop operating, or the lifting drive unit 13 can also be automatically controlled to stop operating by setting a travel sensor on the sliding rod 45. Then turn on the detector 41 for detection. It should be noted that there are generally three three-phase power lightning arresters 5, and corresponding numbers of devices are set for testing.

[0056] Embodiment 2

[0057] In order to enable the overlapping rod 42 to not only have the ability to press down but also have the ability to clamp towards the center, this embodiment makes further improvements. As Figure 8-9 shown, different from Embodiment 1, in this embodiment, the overlapping rod 42 is set as a pair, and each is fixedly connected to an extension arm 47. Each pair of overlapping rods 42 and the extension arm 47 are rotatably connected through a shaft rod 48 and a hinge member 44. The hinge axis of the shaft rod 48 and the hinge member 44 is perpendicular. Among them, a convex rod 46 is provided on the side surface of the sliding rod 45. The convex rod 46 is frustum-shaped and is used for each pair of overlapping rods 42 and the extension arm 47 to rotate along the hinge member 44 and then rotate along the shaft rod 48. As Figure 8 shown in the perspective view, when the sliding rod 45 moves upward, it drives the extension arm 47, the overlapping rod 42, and the hinge member 44 to rotate along the hinge seat 43, making the overlapping rod 42 rotate and rest on the high-voltage terminal. When the sliding rod 45 continues to move upward, the convex rod 46 will be squeezed upward. The two extension arms 47 have a tendency to open outward along the shaft rod 48, so the overlapping rod 42 has a tendency to close inward to further obtain the clamping ability.

[0058] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fully automatic live testing device for lightning arresters, characterized in that: include An insulating rod assembly (1) for delivering the base assembly (2) to the side of the lightning arrester (5); A base assembly (2) for arranging a clamping assembly (3), comprising a base body (21), a pair of slide rails (22) arranged on the side surface of the base body (21), and a pair of slide sleeves (23) sliding on the slide rails (22), wherein the slide rails (22) are provided with second elastic members (24) for pushing the two slide sleeves (23) to move toward the center, and an unlockable one-way locking member (28) is provided between the slide sleeves (23) and the slide rails (22), wherein the one-way locking member (28) is used to restrict the slide sleeves (23) to move only toward the center; A clamping assembly (3) for clamping the arrester (5), comprising a clamping flap (32) arranged on the sliding sleeve (23), the surfaces of the two clamping flaps (32) being hingedly provided with support rods (33), and the two support rods (33) are used to prevent the sliding sleeve (23) from moving toward the center after the heads of the two support rods (33) abut against each other; A detection mechanism (4) for connecting a high-voltage terminal (52) of a lightning arrester (5) and performing detection, comprising a detector (41) and a lap rod (42) arranged on a base body (21), wherein the lap rod (42) presses the high-voltage terminal (52) downwards through a driving structure to cooperate with the clamping petal (32) to abut against the shed (51) to form a fixation; The base assembly (2) is slidably arranged on the top of the insulating rod assembly (1), wherein the insulating rod assembly (1) comprises a base rod (12) and a lifting rod (14) arranged in the base rod (12) for lifting the base assembly (2) upwards; The one-way locking member (28) is unlocked by driving a toggle member (37) disposed on the clamping flap (32), wherein a beveled tooth groove (25) is provided on the surface of the slide rail (22), a sliding portion (26) is slidably disposed in the sliding sleeve (23), the one-way locking member (28) is disposed in the sliding portion (26), and a reset member (27) is further disposed in the sliding sleeve (23) for enabling the sliding portion (26) to drive the one-way locking member (28) to leave the beveled tooth groove (25), the clamping flap (32) A rotating rod (34) is arranged inside, and oblique tooth protrusions (36) are arranged on the surfaces of the rotating rod (34) and the sliding part (26) respectively. The oblique tooth protrusions (36) are used to push the sliding part (26) to drive the one-way locking member (28) into the oblique tooth groove (25) when the rotating rod (34) rotates. A torsion spring (35) is arranged on the surface of the rotating rod (34), and a toggle member (37) is arranged on the rotating rod (34). The toggle member (37) is toggled by the upper umbrella skirt (51) to drive the rotating rod (34) to rotate.

2. The fully automatic live testing device for lightning arresters according to claim 1, wherein: Each of the sliding sleeves (23) corresponds to two sliding rails (22); a pair of parallel holes are provided on the surface of the sliding sleeve (23) for respectively penetrating the two sliding rails (22); and two ends of the second elastic member (24) respectively abut against the surface of the sliding sleeve (23) and the end of the sliding rail (22).

3. The fully automatic live testing device for lightning arresters according to claim 1, wherein: The base rod (12) and the lifting rod (14) are made of insulating material, and a lifting drive unit (13) is provided at the bottom of the base rod (12) to drive the lifting rod (14).

4. The fully automatic live testing device for lightning arresters according to claim 3, characterized in that: The bottom of the base rod (12) is provided with a base (11) with an adjustable initial height.

5. The fully automatic live testing device for lightning arresters according to claim 1, wherein: A hinge seat (43) and a hinge member (44) are arranged on the top of the base body (21); a lap rod (42) is arranged on the hinge member (44); and an extension arm (47) is also arranged in the hinge member (44); the driving structure comprises a slide rod (45) slidably arranged in the base body (21) for pushing the extension arm (47); the slide rod (45) is pushed by a lifting rod (14); and a first elastic member (15) is also arranged between the lifting rod (14) and the base body (21).

6. The fully automatic live testing device for lightning arresters according to claim 5, characterized in that: The lap rod (42) has a pair, each of which is fixedly connected to an extension arm (47). Each pair of lap rods (42) and the extension arm (47) are rotatably connected to the hinge (44) via a shaft (48). The shaft (48) is perpendicular to the hinge axis of the hinge (44). The side surface of the slide rod (45) is provided with a convex rod (46). The convex rod (46) is a frustum-shaped rod and is used for rotating along the shaft (48) after each pair of lap rods (42) and the extension arm (47) rotate along the hinge (44).

7. A testing method for the fully automatic live testing device for lightning arresters according to any one of claims 1-6, characterized in that: The steps include: S1: The clamping flap (32) is opened by the support rod (33), and the clamping flap (32) is placed into the lower end of the uppermost umbrella skirt (51). Under the obstruction of the lightning arrester (5), the support rod (33) is pushed away and no longer abuts against each other for support, so that the clamping flap (32) is fastened under the umbrella skirt (51), and the lap rod (42) presses the high-voltage terminal (52) from top to bottom, thereby completing the lap joint; S2: a current transformer is arranged between the lightning arrester (5) and its discharge counter to obtain a current signal flowing through the lightning arrester in an operating state; S3: obtaining voltage phase data of the high voltage terminal (52) through the detector (41), processing the current signal obtained in step S2 and combining it with the voltage phase data to obtain the resistive current flowing through the arrester in the operating state, thereby determining the performance of the arrester.

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