10kV front-insertion lightning arrester test fixing frame and test method thereof

Abstract

The invention relates to a 10 kV front-inserted lightning arrester test fixing frame and a test method thereof, and belongs to the technical field of fixing frames, the 10 kV front-inserted lightning arrester test fixing frame comprises a fixing component, a fixing support, a front-inserted lightning arrester and a discharge tester, the front face of the fixing support is fixedly connected with a fixing plate, the front face of the fixing plate is fixedly connected with a hollow shell, and the interior of the hollow shell is slidably connected with a sliding block; a toothed plate slidably connected with the interior of the hollow shell is fixedly connected to the outer side of the sliding block, a fixing cover is rotatably connected to the front face of the hollow shell, a gear is fixedly connected to the exterior of a rotating shaft of the fixing cover, and an unlocking assembly is arranged in the hollow shell. According to the invention, through the arrangement of the fixing part and the meshing cooperation of a toothed plate and a gear, the fixing cover can be automatically turned over when the front-inserted lightning arrester is installed in the inner side of the fixing cover, and the fixing cover is fixed in cooperation with the limiting of a limiting slide block, so that the front-inserted lightning arrester can be automatically fixed, and the effect of preventing the front-inserted lightning arrester from loosening and shifting is achieved; and meanwhile, the fixing efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of mounting brackets, specifically relating to a 10kV front-mounted surge arrester test mounting bracket and its test method. Background Technology

[0002] When performing routine factory tests on existing front-mounted surge arresters (such as DC reference voltage and leakage current tests, power frequency withstand voltage tests, etc.), the installation and electrical connection of the test specimen must be completed first. First, it needs to be suspended and fixed on the support rod of the bracket. The front-mounted surge arrester has a cable at the tail end. By rotating the front-mounted surge arrester, the cable is wound around the support rod, which completes the fixation before the test. After the fixation is completed, the grounding wire terminal is reliably connected to the tail end of the surge arrester to ensure that the grounding circuit resistance meets the test requirements. Then, the high-voltage output line of the test instrument is tightly clamped to the high-voltage access interface (such as a pluggable current-carrying terminal) on the top of the surge arrester through a special high-voltage clamp, which completes the fixation before the test.

[0003] During use, the front-mounted surge arrester is fixed by the friction generated by the cable winding during the routine factory test. This fixing method is not stable. The fastened state is very easy to loosen or shift due to slight shaking, cable rebound or stress relaxation, and cannot provide a stable and reliable reference position for testing. Summary of the Invention

[0004] The purpose of this invention is to provide a 10kV front-insertion surge arrester test fixture and its test method, aiming to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A 10kV front-mounted surge arrester test fixture includes a fixing component, comprising a fixing bracket, a front-mounted surge arrester, and a discharge tester. A fixing plate is fixedly connected to the front of the fixing bracket, and a hollow shell is fixedly connected to the front of the fixing plate. A sliding block is slidably connected inside the hollow shell, and a toothed plate is fixedly connected to the outer side of the sliding block and slidably connected to the inside of the hollow shell. A fixing cover is rotatably connected to the front of the hollow shell, and a gear is fixedly connected to the outer side of the rotating shaft of the fixing cover. An unlocking component is provided inside the hollow shell. A reinforcing component includes a lifting groove formed inside the hollow shell, and a guide post is slidably connected inside the lifting groove. A lifting rod is fixedly connected to the side and slidably connected to the interior of the hollow shell. An L-shaped pressure block is fixedly connected to the top of the lifting rod. An inward moving component is provided on the top of the L-shaped pressure block. The inward moving component includes a diagonal rod. A grounding end is slidably connected to the outside of the diagonal rod. A grounding wire is provided on the back of the grounding end. A correction component includes a first inclined plate fixedly connected to the right side of the hollow shell. A sliding column is slidably connected to the front of the fixed plate. A second inclined plate is fixedly connected to the left side of the sliding column. A bottom rod is fixedly connected to the bottom of the sliding column. An elbow frame is fixedly connected to the bottom of the bottom rod. A turning component is provided on the inner side of the elbow frame. A reset component is provided on the front of the fixed plate.

[0006] As a preferred embodiment of the 10kV front-mounted surge arrester test mounting bracket of the present invention, the unlocking assembly includes a first limiting rod fixedly connected to the front of the mounting plate, a first spring provided between the front of the mounting plate and the sliding block, a second limiting rod fixedly connected inside the sliding block, a limiting slider slidably connected outside the second limiting rod, a second spring provided between the bottom of the limiting slider and the inner wall of the sliding block, and an abutment block slidably connected inside the hollow shell.

[0007] As a preferred embodiment of the 10kV front-mounted surge arrester test mounting bracket of the present invention, the mounting cover is composed of an arc-shaped plate and a rotating shaft. The arc-shaped plate has notches on the upper and lower sides of its back, and the rotating shaft is located at the notches. The top of the arc-shaped plate extends inward, and the width of the top is greater than the width of the bottom.

[0008] As a preferred embodiment of the 10kV front-insertion surge arrester test fixing frame of the present invention, the inward moving component further includes a support fork frame fixedly connected to the top of the L-shaped pressure block. The bottom of the fork end of the support fork frame is fixedly connected to the top of the inclined rod. The connector on the outer side of the grounding end is internally slidably connected to a V-shaped limiting frame fixedly connected to the top of the hollow shell.

[0009] As a preferred embodiment of the 10kV front-insertion surge arrester test fixing frame of the present invention, the supporting forked frame is composed of a folding frame and a downward forked bent rod. The bottom of the bent rod is connected to the upper end of the inclined rod. The top and bottom of the inclined rod are provided with limiting plates. The outer connector of the grounding terminal is provided with an inclined groove with an inclination corresponding to the inclined rod. The V-shaped limiting frame is composed of a V-shaped rod and a limiting long rod. The V-shaped rod is set on the top of the hollow shell, and the front end of the limiting long rod is embedded in the connector of the grounding terminal.

[0010] As a preferred embodiment of the 10kV front-insertion surge arrester test fixing frame of the present invention, the lifting groove is composed of a horizontal groove and an inclined groove. The inclined groove is located in front of the horizontal groove and the inclined groove and the horizontal groove are interconnected. The inclined groove gradually slopes downward from back to front. The diameter of the guide column corresponds to the width of the lifting groove. The hollow shell has a rectangular hole for the lifting rod to slide up and down. The top of the sliding block has a rectangular long groove, which is located between the two lifting grooves.

[0011] As a preferred embodiment of the 10kV front-mounted surge arrester test fixture of the present invention, the rotating head assembly includes a rotating belt column rotatably connected inside the elbow frame, a high-voltage trigger head is fixedly connected inside the rotating belt column, and a high-voltage line connected to a discharge tester is fixedly connected to the right side of the high-voltage trigger head.

[0012] As a preferred embodiment of the 10kV front-mounted surge arrester test fixture of the present invention, the reset assembly includes a long shaft fixedly connected to the front of the fixing plate, a telescopic rod rotatably connected to the right side of the sliding column, and a third spring provided on the outside of the telescopic rod.

[0013] As a preferred embodiment of the 10kV front-mounted surge arrester test fixing frame of the present invention, the elbow frame is composed of a concave frame and an arc-shaped head, with the arc-shaped head symmetrically arranged at the left end of the concave frame and extending outward along the left end of the concave frame.

[0014] A test method for a 10kV front-mounted surge arrester includes the following steps: Place the front-mounted surge arrester into the open fixed cover; push the front-mounted surge arrester to push out the limit slider, locking the closed fixed cover; move the grounding terminal inward to automatically connect the interface; move the elbow frame to the left, the front-mounted surge arrester automatically corrects its position, and the high-voltage trigger head enters the interface of the front-mounted surge arrester; rotate the rotating plate column to adjust the test contact for testing; after the test, press the abutment block to unlock and remove the front-mounted surge arrester.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. By using the fixed components and the meshing of the toothed plate and gears, the fixed cover can be automatically flipped when the front-mounted surge arrester is installed inside the fixed cover. In conjunction with the limiting slider, the fixed cover is fixed, so that the front-mounted surge arrester can be automatically fixed, which can prevent the front-mounted surge arrester from loosening or shifting, and at the same time improve the fixing efficiency.

[0016] 2. By using the reinforced components and the cooperation of the lifting groove and the guide column, the L-shaped pressure block can press and fix the tail end of the front-inserted surge arrester. This increases the stability of the fixation and prevents the front-inserted surge arrester from tilting or shifting after fixation. The guide of the inclined rod allows the grounding terminal to be automatically connected to the tail end of the front-inserted surge arrester, improving the efficiency of installing the front-inserted surge arrester during experiments.

[0017] 3. By using the set correction components and the cooperation of the first and second inclined plates, the left-moving elbow frame can correct the alignment of the connection end of the front-inserted surge arrester. This allows for further limiting of the fixed front-inserted surge arrester while simultaneously inserting the high-voltage trigger head into the connector of the front-inserted surge arrester, reducing the installation process and further improving the efficiency of experimental installation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 A schematic diagram of the external structure of the test fixture for a 10kV front-mounted surge arrester; Figure 2 Right view schematic diagram of the external structure of the 10kV front-mounted surge arrester test mounting bracket; Figure 3 A cross-sectional view of the fixing components of the test fixture for a 10kV front-mounted surge arrester; Figure 4 A magnified structural diagram of point A of the test fixture for a 10kV front-mounted surge arrester; Figure 5 This is a schematic diagram of the hollow shell and sliding block of the test fixture for a 10kV front-insertion surge arrester.

[0019] Figure 6 A schematic diagram of the external structure of the reinforcement components for the 10kV front-mounted surge arrester test mounting bracket.

[0020] Figure 7 A cross-sectional view of the reinforcing components of the test fixture for a 10kV front-mounted surge arrester.

[0021] Figure 8 A schematic diagram of the anatomical structure of the reinforcement components for the 10kV front-mounted surge arrester test mounting bracket.

[0022] Figure 9 A schematic diagram of the external structure of the correction component for the test fixture of a 10kV front-insertion surge arrester.

[0023] Figure 10 A top-view schematic diagram of the external structure of the correction component of the 10kV front-insertion surge arrester test fixture.

[0024] Figure 11 A schematic diagram of the external structure of the elbow frame of the 10kV front-insertion surge arrester test fixture.

[0025] In the diagram: 10. Fixed bracket; 11. Front-mounted surge arrester; 12. Discharge tester; 13. Fixed plate; 14. Hollow shell; 15. Sliding block; 16. Toothed plate; 17. Fixed cover; 18. Gear; 19. Unlocking assembly; 191. First limit rod; 192. First spring; 193. Second limit rod; 194. Limiting slider; 195. Second spring; 196. Contact block; 20. Lifting groove; 21. Guide post; 22. Lifting rod; 23. L-shaped 24. Pressure block; 24. Inward movement assembly; 241. Support fork frame; 242. Diagonal bar; 243. V-shaped limit frame; 25. Grounding end; 26. Grounding wire; 30. First inclined plate; 31. Sliding column; 32. Second inclined plate; 33. Base rod; 34. Elbow frame; 35. Rotating head assembly; 351. Rotating belt plate column; 352. High voltage trigger head; 353. High voltage wire; 36. Reset assembly; 361. Long shaft; 362. Telescopic rod; 363. Third spring. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Example 1 Reference Figure 1 - Figure 5This is the first embodiment of the present invention, which provides a 10kV front-mounted surge arrester test fixture, which achieves the effect of automatically and stably fixing the front-mounted surge arrester 11. It includes fixing components, including a fixing bracket 10, a front-mounted surge arrester 11, and a discharge tester 12. A fixing plate 13 is fixedly connected to the front of the fixing bracket 10, and a hollow shell 14 is fixedly connected to the front of the fixing plate 13. A sliding block 15 is slidably connected inside the hollow shell 14, and a toothed plate 16 is fixedly connected to the outside of the sliding block 15 and slidably connected to the inside of the hollow shell 14. A fixing cover 17 is rotatably connected to the front of the hollow shell 14, and a gear 18 is fixedly connected to the outside of the rotating shaft of the fixing cover 17. An unlocking component 19 is provided inside the hollow shell 14. A reinforcing component includes a lifting groove 20 formed inside the hollow shell 14. An internal sliding connection includes a guide post 21. A lifting rod 22, which is slidably connected to the inside of the hollow shell 14, is fixedly connected to the inner side of the guide post 21. An L-shaped pressure block 23 is fixedly connected to the top of the lifting rod 22. An inward shifting component 24 is provided on the top of the L-shaped pressure block 23. The inward shifting component 24 includes a diagonal rod 242. A grounding end 25 is slidably connected to the outside of the diagonal rod 242. A grounding wire 26 is provided on the back of the grounding end 25. A correction component includes a first inclined plate 30 fixedly connected to the right side of the hollow shell 14. A sliding column 31 is slidably connected to the front of the fixing plate 13. A second inclined plate 32 is fixedly connected to the left side of the sliding column 31. A bottom rod 33 is fixedly connected to the bottom of the sliding column 31. A bent frame 34 is fixedly connected to the bottom of the bottom rod 33. A rotating assembly 35 is provided on the inner side of the bent frame 34. A reset assembly 36 is provided on the front of the fixing plate 13.

[0028] Specifically, the core of the fixing component lies in the cooperation between the toothed plate 16 and the gear 18. The gear 18 is fixed on the rotating shaft of the fixing cover 17. When fixing the front-inserted surge arrester 11, it will abut against the sliding block 15, which will cause the sliding block 15 to drive the toothed plate 16 to move. The moving toothed plate 16, through meshing with the gear 18, will cause the fixing cover 17 to automatically flip over and cover the outside of the front-inserted surge arrester 11. When the limiting slider 194 moves to the bottom of the abutting block 196, it will release the elastic force through the second spring 195 to push out, thus achieving automatic fixing.

[0029] The reinforcing components are designed to ensure that the front-mounted surge arrester 11 is firmly secured and will not loosen during installation. When the front-mounted surge arrester 11 is inserted into the inner side of the fixing cover 17, its tail end is positioned upwards, and the height of the tail end plane is higher than the height of the fixing cover 17. When the front-mounted surge arrester 11 is pushed backwards, the guide post 21 changes from horizontal sliding to downward sliding inside the lifting groove 20, causing the L-shaped pressure block 23 to automatically descend. The L-shaped pressure block 23 presses the tail end of the front-mounted surge arrester 11 downwards, making it fit against the top of the fixing cover 17. At the same time, after being pressed down, the L-shaped pressure block 23 will automatically straighten the front-mounted surge arrester 11, preventing it from tilting and fixing. Simultaneously, it presses it tightly, and with the guidance of the inclined rod 242, the grounding terminal 25 can automatically snap onto the connector at the tail end of the front-mounted surge arrester 11, allowing it to automatically connect to the grounding wire 26.

[0030] When the front-mounted surge arrester 11 is inserted into the fixed cover 17, it is tilted both vertically and laterally. Through the correction component, the front-mounted surge arrester 11 can be kept parallel to the fixed plate 13. When the hollow shell 14 moves, if it tilts, the tilted end will contact the left-sliding elbow frame 34. The left end of the elbow frame 34 will push it to rotate adaptively so that its interface faces right. Through the automatic correction method, the high-voltage trigger head 352 inserted into the front-mounted surge arrester 11 can be made to contact the inner wall of the front-mounted surge arrester 11.

[0031] Furthermore, the unlocking component 19 includes a first limiting rod 191 fixedly connected to the front of the fixed plate 13, a first spring 192 provided between the front of the fixed plate 13 and the sliding block 15, a second limiting rod 193 fixedly connected inside the sliding block 15, a limiting slider 194 slidably connected to the outside of the second limiting rod 193, a second spring 195 provided between the bottom of the limiting slider 194 and the inner wall of the sliding block 15, and an abutment block 196 slidably connected inside the hollow shell 14.

[0032] When the sliding block 15 is inserted into the hollow shell 14, it will compress the first spring 192. The compressed first spring 192 can store energy, so that when the front-mounted surge arrester 11 is removed, the sliding block 15 is pushed out, thereby causing the fixed cover 17 to flip.

[0033] The limiting slider 194, which is provided inside the sliding block 15, has an area equal to the bottom surface of the abutment block 196. The abutment block 196 slides inside the small frame at the top of the hollow shell 14 through the limiting structure. The second spring 195 is initially in a compressed state. Before the sliding block 15 is completely inserted into the hollow shell 14, the limiting slider 194 is always placed inside the sliding block 15. After the limiting slider 194 moves below the abutment block 196, it will cause the second spring 195 to release its elastic force, push it out, and thus limit the sliding block 15 so that the sliding block 15 cannot move.

[0034] Preferably, the fixing cover 17 is composed of an arc-shaped plate and a rotating shaft. The arc-shaped plate has notches on the upper and lower sides of its back, and the rotating shaft is located at the notches. The top of the arc-shaped plate extends inward, and the width of the top is greater than the width of the bottom.

[0035] It should be noted that the top of the arc-shaped plate extends inward, thus supporting the tail end of the front-inserted surge arrester 11. The tail end of the front-inserted surge arrester 11 is provided with a ring structure, and the area of ​​the ring structure is larger than the area of ​​the top opening of the fixed cover 17. Therefore, the two combined fixed covers 17 can support the front-inserted surge arrester 11 inside, preventing it from sliding down.

[0036] In use, first hold the front-mounted surge arrester 11 and insert it into the inside of the two fixed covers 17. When the front-mounted surge arrester 11 contacts the sliding block 15, it will cause the sliding block 15 to slide into the hollow shell 14. The sliding block 15 will cause the toothed plate 16 to slide backward. The sliding toothed plate 16 will drive the gear 18 to rotate, so that the fixed cover 17 can rotate inward and gradually cover the surface of the front-mounted surge arrester 11. When the front of the front-mounted surge arrester 11 is in contact with the front of the hollow shell 14, the sliding block 15 will be completely inserted into the interior of the hollow shell 14. Meanwhile, the two fixed covers 17 rotate and fit together, so that the front-inserted surge arrester 11 is limited inside the fixed cover 17. At the same time, the limiting slider 194 moves to the bottom of the abutment block 196. At this time, the second spring 195 releases its elastic force, pushing the limiting slider 194 out of the sliding block 15 and into the hollow shell 14. At this time, the abutment block 196 is pushed upward out of the small frame at the top of the hollow shell 14 due to the action of the limiting slider 194. At this time, the front-inserted surge arrester 11 is locked inside the fixed cover 17.

[0037] When it is necessary to unlock the fixed cover 17 and remove the front-inserted surge arrester 11, simply press the abutment block 196 to make the limit slider 194 re-enter the interior of the sliding block 15, which will release the elastic force of the squeezed first spring 192 and push the sliding block 15 out. As the sliding block 15 is gradually pushed out, the fixed cover 17 will rotate. At this time, the handheld front-inserted surge arrester 11 will gradually move forward and can be removed.

[0038] In summary, through the cooperation of the toothed plate 16 and the gear 18, when the front-inserted surge arrester 11 enters the inner side of the fixed cover 17, the fixed cover 17 gradually rotates. With the locking of the limiting slider 194, the front-inserted surge arrester 11 can be automatically fixed, preventing the front-inserted surge arrester 11 from loosening and shifting during the experiment.

[0039] Example 2 Reference Figure 6 - Figure 8This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a reinforcement component for the 10kV front-insertion surge arrester test fixing frame. While solving the problem that the front-insertion surge arrester 11 will rotate and move inside the fixing cover 17, it can automatically provide grounding protection for the front-insertion surge arrester 11. It includes an inward moving component 24 and a support fork frame 241 fixedly connected to the top of the L-shaped pressure block 23. The bottom of the fork end of the support fork frame 241 is fixedly connected to the top of the inclined rod 242. The V-shaped limiting frame 243, which is fixedly connected to the top of the hollow shell 14, is slidably connected to the connector on the outside of the grounding end 25.

[0040] Specifically, the bottom of the V-shaped limiting bracket 243 is fixed to the top of the hollow shell 14. A T-shaped plug is provided on the forked end of its front side. The T-shaped plug slides inside the connectors on both sides of the grounding end 25. That is to say, the grounding end 25 is limited by the T-shaped plug and can only move in opposite directions. An inclined groove is provided inside the connector of the grounding end 25, and the inclined rod 242 is set inside the inclined groove. When the supporting forked bracket 241 is raised and lowered, the inclined rod 242 will rise. Since the height of the grounding end 25 remains unchanged, the grounding end 25 can slide synchronously inward or outward in the lateral direction, and thus can be clamped on the outside of the tail connector of the front-inserted surge arrester 11.

[0041] Meanwhile, after the grounding terminal 25 is connected, an elliptical opening is provided in its central area. The maximum distance between the incenter of the ellipse is greater than the diameter of the front-inserted surge arrester 11 connector, so there will be no obstruction in the travel. When the front-inserted surge arrester 11 is moved forward and taken out, there will be no jamming, and the two grounding terminals 25 can be directly separated.

[0042] Furthermore, the supporting fork frame 241 is composed of a folding frame and a downward forked bending rod. The bottom of the bending rod is connected to the upper end of the inclined rod 242. Limiting plates are provided at both the top and bottom of the inclined rod 242. The inner side of the grounding end 25 connector has a groove with an inclination corresponding to the inclined rod 242. The V-shaped limiting frame 243 is composed of a V-shaped rod and a limiting long rod. The V-shaped rod is set at the top of the hollow shell 14, and the front end of the limiting long rod is embedded in the connector of the grounding end 25.

[0043] The downward-branching bent rod adopts a symmetrical design, which enables the movement of the two inclined rods 242 to be synchronized, and the inclined groove can be guided by the movement of the inclined rods 242 to achieve opposite movement.

[0044] Preferably, the lifting groove 20 is composed of a horizontal groove and an inclined groove. The inclined groove is located in front of the horizontal groove and the inclined groove and the horizontal groove are interconnected. The inclined groove gradually slopes downward from back to front. The diameter of the guide post 21 corresponds to the width of the lifting groove 20. The hollow shell 14 has a rectangular hole for the lifting rod 22 to slide up and down. The top of the sliding block 15 has a rectangular long groove, which is located between the two lifting grooves 20.

[0045] It should be noted that, since the inclined groove gradually slopes downward from back to front, the guide post 21 will drop sharply when it enters the inclined groove. Only when the fixing cover 17 is about to close will the L-shaped pressure block 23 descend and press on the tail end of the front-inserted surge arrester 11. In other words, the front-inserted surge arrester 11 will not change before it is about to be fixed, and the two grounding terminals 25 will not approach each other. Therefore, the fixing process of the front-inserted surge arrester 11 can be avoided. Only when the front-inserted surge arrester 11 is about to be fixed will the L-shaped pressure block 23 descend and the grounding terminal 25 clamp onto the tail end connector of the front-inserted surge arrester 11.

[0046] The rectangular hole inside the hollow shell 14 allows the L-shaped pressure block 23 to slide only up and down, while the rectangular slot inside the sliding block 15 ensures that the sliding block 15 will not affect the lifting rod 22 when it slides.

[0047] During use, when the fixed cover 17 is closed, the guide post 21 first slides inside the horizontal groove of the lifting groove 20, so that the L-shaped pressure block 23 can be kept at a horizontal height without changing and without affecting the inserted surge arrester 11. When the fixed cover 17 is about to close, the guide post 21 enters the inclined groove of the lifting groove 20. Due to the large inclination of the inclined groove, the L-shaped pressure block 23 will descend directly. During the period when the fixed cover 17 is closed and fixed, it contacts the tail end of the inserted surge arrester 11 and presses the inserted surge arrester 11 down. After the fixed cover 17 is closed and fixed, the L-shaped pressure block 23 presses tightly on the tail end of the inserted surge arrester 11, so that it can be reinforced and fixed. At the same time, it can keep the fixed inserted surge arrester 11 always perpendicular to the ground and prevent tilting or skewing.

[0048] When the L-shaped pressure block 23 descends, it will drive the support fork frame 241 to descend, thus driving the inclined rod 242 to descend. Since the two ends of the grounding terminal 25 have inclined grooves inside, and the horizontal height of the grounding terminal 25 remains unchanged, when the inclined rod 242 descends, the two grounding terminals 25 will move inward synchronously and get stuck at the tail end connector of the front-inserted surge arrester 11, thereby achieving grounding connection.

[0049] After the fixed cover 17 is unlocked, the front-mounted surge arrester 11 can be dragged forward, and the L-shaped pressure block 23 will release the clamping force on the front-mounted surge arrester 11. At the same time, since the grounding terminal 25 has enough space to slide forward, the front-mounted surge arrester 11 can be directly removed.

[0050] In summary, through the cooperation of the lifting groove 20 and the guide column 21, the L-shaped pressure block 23 can automatically press the fixed front-inserted surge arrester 11 to prevent it from tilting, while making it stable. It can also automatically connect the grounding terminal 25, improving the efficiency of installation before the experiment.

[0051] Example 3 Reference Figure 9 - Figure 11 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a correction component for a 10kV front-insertion surge arrester test fixture, which realizes the function of automatically sending the high-voltage trigger head 352 for the test into the connector of the front-insertion surge arrester 11. It includes a rotating head assembly 35, including a rotating belt column 351 rotatably connected inside the elbow frame 34. The high-voltage trigger head 352 is fixedly connected inside the rotating belt column 351. The high-voltage trigger head 352 is fixedly connected to the right side of the high-voltage trigger head 352 with a high-voltage line 353 connected to the discharge tester 12.

[0052] Specifically, the discharge tester 12 is directly connected to the high-voltage line 353 and is integrated with the fixed bracket 10. The rotating plate column 351 adopts an insulated design and is wrapped with an insulating rubber sleeve. When the rotating plate column 351 is rotated, the high-voltage trigger head 352 can rotate inside the connector of the front-inserted surge arrester 11, so that different contacts can be detected during the experiment to see if different results will be obtained.

[0053] Furthermore, the reset assembly 36 includes a long shaft 361 fixedly connected to the front of the fixed plate 13. The long shaft 361 is rotatably connected to a telescopic rod 362 rotatably connected to the right side of the slide column 31. A third spring 363 is provided on the outside of the telescopic rod 362. The elbow frame 34 is composed of a concave frame and an arc-shaped head. The arc-shaped head is symmetrically arranged at the left end of the concave frame and extends outward along the left end of the concave frame.

[0054] The telescopic rod 362, in conjunction with the third spring 363, can apply a pulling force to the right to the sliding column 31. After the first inclined plate 30 stops contacting the second inclined plate 32, the second inclined plate 32 will slide to the right, thereby causing the elbow frame 34 to move to the right.

[0055] Because the arc-shaped head has an outward tilting structure, even if the front-inserted surge arrester 11 tilts horizontally after being inserted into the fixed cover 17, the tilt angle will not be too large and it will be within the coverage area of ​​the arc-shaped head. Therefore, during the leftward movement of the arc-shaped head, it will push the front-inserted surge arrester 11 to rotate automatically, thereby automatically correcting the deviation.

[0056] During use, as the sliding block 15 moves backward, the first inclined plate 30 also moves backward with the sliding block 15, but does not directly contact the second inclined plate 32. When the L-shaped pressure block 23 begins to descend, the first inclined plate 30 and the second inclined plate 32 begin to contact each other. Through the cooperation of their inclined surfaces, the second inclined plate 32 moves to the left. Through the connection between the sliding column 31 and the bottom rod 33, the elbow frame 34 moves to the left. When the elbow frame 34 moves to the left, the arc-shaped head will contact the front-inserted surge arrester 11. The elbow frame 34 will automatically correct the angle of the front-inserted surge arrester 11. After the angle of the front-inserted surge arrester 11 is correct, the elbow frame 34 will move to the left until the fixing cover 17 is fixed and the L-shaped pressure block 23 also presses the front-inserted surge arrester 11. At this time, the elbow frame 34 will send the high-voltage trigger head 352 into the connector of the front-inserted surge arrester 11, and the high-voltage trigger head 352 will come into contact with the inside of the connector of the front-inserted surge arrester 11.

[0057] During the experiment, the rotating plate column 351 can be rotated by rotating it, that is, it can rotate along the inner wall of the connector of the front-inserted surge arrester 11, so as to test the influence of different contacts on the experimental results.

[0058] In summary, by correcting and aligning the connector of the front-mounted surge arrester 11 during the fixing process, the high-voltage trigger head 352 can be automatically inserted into the connector of the front-mounted surge arrester 11. This also prevents the front-mounted surge arrester 11 from rotating during the experiment, further increasing the stability of the fixing and improving the efficiency of installing the front-mounted surge arrester 11 for the experiment.

[0059] Example 4 Reference Figure 1 - Figure 11 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a test method for a 10kV pre-installed surge arrester, which includes the following steps: Insert the front-mounted surge arrester 11 into the open fixed cover 17; push the front-mounted surge arrester 11 to push out the limit slider 194, locking the closed fixed cover 17; move the grounding terminal 25 inward to automatically connect the interface; move the elbow frame 34 to the left, the front-mounted surge arrester 11 automatically corrects its deviation, and the high-voltage trigger head 352 enters the interface of the front-mounted surge arrester 11; rotate the rotating plate column 351 to adjust the test contact for testing; after the test, press the abutment block 196 to unlock and remove the front-mounted surge arrester 11.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A test fixture for a 10kV front-mounted surge arrester, characterized in that: include, The fixed components include a fixed bracket (10), a front-mounted surge arrester (11), and a discharge tester (12). A fixed plate (13) is fixedly connected to the front of the fixed bracket (10). A hollow shell (14) is fixedly connected to the front of the fixed plate (13). A sliding block (15) is slidably connected inside the hollow shell (14). A toothed plate (16) is fixedly connected to the outside of the sliding block (15) and slidably connected to the inside of the hollow shell (14). A fixed cover (17) is rotatably connected to the front of the hollow shell (14). A gear (18) is fixedly connected to the outside of the rotating shaft of the fixed cover (17). An unlocking component (19) is provided inside the hollow shell (14). The reinforcing component includes a lifting groove (20) opened inside the hollow shell (14), a guide post (21) is slidably connected inside the lifting groove (20), a lifting rod (22) is fixedly connected to the inner side of the guide post (21) and slidably connected to the inside of the hollow shell (14), an L-shaped pressure block (23) is fixedly connected to the top of the lifting rod (22), an inward moving component (24) is provided on the top of the L-shaped pressure block (23), the inward moving component (24) includes a diagonal rod (242), a grounding end (25) is slidably connected to the outside of the diagonal rod (242), and a grounding wire (26) is provided on the back of the grounding end (25). The correction component includes a first inclined plate (30) fixedly connected to the right side of the hollow shell (14), a sliding column (31) slidably connected to the front of the fixed plate (13), a second inclined plate (32) fixedly connected to the left side of the sliding column (31), a bottom rod (33) fixedly connected to the bottom of the sliding column (31), a bend frame (34) fixedly connected to the bottom of the bottom rod (33), a rotating head assembly (35) provided on the inner side of the bend frame (34), and a reset assembly (36) provided on the front of the fixed plate (13).

2. The 10kV front-mounted surge arrester test fixture according to claim 1, characterized in that: The unlocking component (19) includes a first limiting rod (191) fixedly connected to the front of the fixed plate (13), a first spring (192) provided between the front of the fixed plate (13) and the sliding block (15), a second limiting rod (193) fixedly connected inside the sliding block (15), a limiting slider (194) slidably connected to the outside of the second limiting rod (193), a second spring (195) provided between the bottom of the limiting slider (194) and the inner wall of the sliding block (15), and an abutment block (196) slidably connected inside the hollow shell (14).

3. The 10kV front-mounted surge arrester test fixture according to claim 2, characterized in that: The fixing cover (17) is composed of an arc-shaped plate and a rotating shaft. The arc-shaped plate has openings on the upper and lower sides of its back. The rotating shaft is located at the openings. The top of the arc-shaped plate extends inward, and the width of the top is greater than the width of the bottom.

4. The 10kV front-mounted surge arrester test fixture according to claim 1, characterized in that: The inward moving component (24) also includes a support fork frame (241) fixedly connected to the top of the L-shaped pressure block (23). The bottom of the fork end of the support fork frame (241) is fixedly connected to the top of the inclined rod (242). The inner part of the connector on the outside of the grounding end (25) is slidably connected to a V-shaped limiting frame (243) fixedly connected to the top of the hollow shell (14).

5. A test fixture for a 10kV front-mounted surge arrester according to claim 4, characterized in that: The supporting fork frame (241) is composed of a folding frame and a downward forked bent rod. The bottom of the bent rod is connected to the upper end of the inclined rod (242). The top and bottom of the inclined rod (242) are provided with limiting plates. The outer connector of the grounding end (25) has a groove with an inclination corresponding to the inclined rod (242). The V-shaped limiting frame (243) is composed of a V-shaped rod and a limiting long rod. The V-shaped rod is set on the top of the hollow shell (14). The front end of the limiting long rod is embedded in the connector of the grounding end (25).

6. The 10kV front-mounted surge arrester test fixture according to claim 1, characterized in that: The lifting groove (20) is composed of a horizontal groove and an inclined groove. The inclined groove is located in front of the horizontal groove and the inclined groove and the horizontal groove are interconnected. The inclined groove gradually slopes downward from back to front. The diameter of the guide post (21) corresponds to the width of the lifting groove (20). The hollow shell (14) has a rectangular hole for the lifting rod (22) to slide up and down. The top of the sliding block (15) has a rectangular long groove, which is located between the two lifting grooves (20).

7. A test fixture for a 10kV front-mounted surge arrester according to claim 1, characterized in that: The rotating head assembly (35) includes a rotating belt column (351) rotatably connected inside the elbow frame (34). A high-voltage trigger head (352) is fixedly connected inside the rotating belt column (351). A high-voltage line (353) connected to the discharge tester (12) is fixedly connected to the right side of the high-voltage trigger head (352).

8. A test fixture for a 10kV front-mounted surge arrester according to claim 1, characterized in that: The reset assembly (36) includes a long shaft (361) fixedly connected to the front of the fixed plate (13), and a telescopic rod (362) rotatably connected to the outside of the long shaft (361) and rotatably connected to the right side of the slide column (31). A third spring (363) is provided on the outside of the telescopic rod (362).

9. A test fixture for a 10kV front-mounted surge arrester according to claim 1, characterized in that: The elbow frame (34) consists of a concave frame and an arc-shaped head. The arc-shaped head is symmetrically arranged at the left end of the concave frame and extends outward along the left end of the concave frame.

10. A test method for a 10kV front-insertion surge arrester, wherein the test method uses the test fixture as described in any one of claims 1-9, characterized in that, Includes the following steps: Insert the front-mounted surge arrester (11) into the opening fixed cover (17); Pushing the front-mounted surge arrester (11) causes the limit slider (194) to be pushed out, locking the closed fixed cover (17); Move the grounding terminal (25) inward to automatically connect the interface; The elbow frame (34) moves to the left, the front-inserted surge arrester (11) automatically corrects its deviation, and the high-voltage trigger head (352) enters the interface of the front-inserted surge arrester (11); Rotate the rotating plate column (351) and adjust the experimental contact to conduct the test; Test complete. Press the contact block (196) to unlock and remove the front-mounted surge arrester (11).

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