Gapped alternating-current surge arrester

Abstract

The present application relates to the field of surge arresters, and specifically to a gapped alternating-current surge arrester, comprising a surge arrester main body and a pressing column, wherein a stainless steel grading ring is mounted on the pressing column; a support seat is mounted on the surge arrester main body; a chamber for the pressing column to slide up and down is formed in the support seat. By means of cooperation of a pressing plate, a first spring, right-angle blocking plates, a clamping mechanism, a pressing mechanism, and limiting mechanisms, when the stainless steel grading ring is mounted, the pressing column is completely inserted into the support seat, and then the pressing plate is pressed downwards to fix the stainless steel grading ring, and when the stainless steel grading ring is dismounted, the stainless steel grading ring can be released simply by pressing the pressing plate downwards to the maximum extent, and then the stainless steel grading ring is removed; in the entire assembly and disassembly process, only single-handed operation of a worker is required, and the other hand of the worker can grasp an external object to stabilize the body of the worker, thereby improving the operation convenience of the worker and also improving operation safety.

Description

A gapped AC surge arrester Technical Field

[0001] This application relates to the field of surge arrester technology, specifically to an AC surge arrester with a gap. Background Technology

[0002] A gap-type AC surge arrester consists of the arrester body (current-limiting element), a current-carrying ring, and connecting parts. It is used in parallel with the insulator. When the power supply system is operating normally, due to the gap between the current-carrying ring and the high-voltage conductor, the arrester body operates normally without power consumption or current generation, thus greatly improving its service life. When a direct or induced lightning strikes the high-voltage conductor, the current is introduced into the arrester body through the current-carrying ring, quickly filtering out excess charge and cutting off the power frequency follow current, releasing energy instantaneously. This protects electrical equipment and prevents flashover or breakdown of the insulator, burning of the high-voltage conductor, and frequent tripping of the power supply system, ensuring the normal operation of the line.

[0003] A surge arrester with a discharge gap, disclosed in CN211556823U, includes an arrester body, a square sleeve, a stainless steel current-carrying ring, and a fixing block. The square sleeve is fixedly connected to the top of the arrester body, the stainless steel current-carrying ring is fixedly connected to the side wall of the fixing block, a limit block is fixedly connected to the bottom of the fixing block, and a locking post is fixedly connected to the bottom of the limit block. The square sleeve has a square groove, and the side wall of the square sleeve has a locking mechanism corresponding to the limit block. This surge arrester with a discharge gap ensures that when the stainless steel current-carrying ring is installed on the arrester body, the square locking post prevents rotation when inserted into the square sleeve, thus positioning the installation angle. The locking mechanism saves time for workers replacing the stainless steel current-carrying ring, is simple and convenient to operate, and provides good locking effect.

[0004] When disassembling and assembling the stainless steel drain ring, the above-mentioned device requires one hand to press the pressure plate and the other hand to operate the limit block. Since surge arresters are often installed at high places, workers usually need to use one hand to grab external objects to stabilize their body when performing high-altitude operations. Therefore, the above solution requires two hands to disassemble and assemble the stainless steel drain ring, which not only reduces the convenience of operation for workers, but also affects the safety of operation.

[0005] Therefore, this application provides an AC surge arrester with a gap to solve the above problems. Summary of the Invention

[0006] In view of the above situation and to overcome the defects of the prior art, this application provides a gapped AC surge arrester to solve the problem that the above device requires two hands to operate when disassembling and assembling the stainless steel current-carrying ring, which not only reduces the convenience of operation for workers, but also affects the safety of operation.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0008] A gapped AC surge arrester includes an arrester body and a pressure column. A stainless steel current-carrying ring is installed on the pressure column. A support base is installed on the arrester body. The support base has a cavity inside for the pressure column to slide up and down. A first spring is fixedly connected inside the cavity. A pressure plate is fixedly connected to the other end of the first spring. The bottom end of the pressure column presses against the upper surface of the pressure plate. Two symmetrical reinforcing mechanisms are arranged above the support base.

[0009] The support base is equipped with a clamping mechanism for limiting the U-shaped connecting plate. The clamping mechanism includes two right-angle limiting plates located on the upper surface of the support base. The bottom surfaces of the two right-angle limiting plates are fixedly connected to movable plates. The two movable plates are horizontally slidably connected inside the support base. A pressing mechanism is provided below the pressure plate. First housings are fixedly connected to both sides of the support base. The interior of the two first housings is equipped with a limiting mechanism.

[0010] Preferably, right-angle baffles are fixedly connected to both sides of the pressure plate, and the right-angle baffles are used to block the two moving plates.

[0011] Preferably, the clamping mechanism further includes two cylinders, which are respectively embedded in the two sides of the support base. A third spring is fixedly connected inside each of the two cylinders, and the other end of each of the two third springs is fixedly connected to the side of the two moving plates that are far apart from each other.

[0012] Preferably, the extrusion mechanism includes a first L-shaped plate and a second L-shaped plate fixedly connected to the outer surface of the movable plate. A first triangular block is fixedly connected to the outer surface of each of the two first L-shaped plates and the two second L-shaped plates. The first L-shaped plate, the second L-shaped plate, and the first triangular block are all horizontally slidably connected inside the support base. A second triangular block is fixedly connected to the bottom surface of the pressure plate, and the second triangular block corresponds one-to-one with the first triangular block.

[0013] Preferably, the limiting mechanism includes a limiting block fixedly connected to the outer surface of the first L-shaped plate, and the end of the limiting block away from the first L-shaped plate passes through the support base and is inserted into the interior of the first housing. The side of the limiting block near the pressure plate is provided with an inclined groove and a limiting hole, and the depth of the inclined groove gradually becomes shallower from the outside to the inside. The limiting hole is connected to the inclined groove and is located at the innermost end of the inclined groove.

[0014] Preferably, the first housing has a first sliding plate and a second sliding plate slidably connected inside, a third toothed plate is fixedly connected between the first sliding plate and the second sliding plate, a limiting rod adapted to the inclined groove and the limiting hole is fixedly connected to the side of the second sliding plate away from the first sliding plate, a second spring is fixedly connected to the side of the first sliding plate away from the second sliding plate, and the other end of the second spring is fixedly connected to the inner wall of the first housing.

[0015] Preferably, a first rotating shaft is rotatably mounted between the first housing and one side of the support base. A second gear is mounted on the outer surface of the first rotating shaft, and the second gear meshes with a third toothed plate. A third L-shaped plate is fixedly connected to the outer surface of the right-angle baffle. The side of the third L-shaped plate away from the pressure plate passes through the support base and is inserted into the interior of the first housing. A second toothed plate is fixedly connected to the upper surface of the portion of the third L-shaped plate located inside the first housing. A one-way bearing is mounted on the outer surface of the first rotating shaft, and a first gear is mounted on the one-way bearing. The first gear meshes with the second toothed plate.

[0016] Preferably, a mounting bracket is installed at the bottom of the surge arrester body, a circular plate is fixedly installed at the top of the surge arrester body, a support plate is fixedly connected to the side of the circular plate away from the surge arrester body, a rectangular frame is fixedly connected to the side of the support plate away from the circular plate, a support seat is rotatably mounted on the upper surface of the rectangular frame, an adjustment mechanism for adjusting the angle of the support seat is provided inside the rectangular frame, the adjustment mechanism includes a second rotating shaft, one end of the second rotating shaft is rotatably mounted inside the support plate, the other end of the second rotating shaft is fixedly connected to the support seat, a third gear is fixedly connected to the outer surface of the second rotating shaft, a threaded rod is rotatably mounted inside the rectangular frame, a knob is fixedly connected to one end of the threaded rod, a threaded plate is threadedly connected to the outer surface of the threaded rod, and the threaded plate is slidably connected to the inside of the rectangular frame, a first toothed plate is fixedly connected to the side of the threaded plate near the third gear, and the first toothed plate meshes with the third gear.

[0017] Preferably, a U-shaped connecting plate is fixedly connected to the top of the pressure column, and a fixing plate is fixedly connected to the upper surface of the U-shaped connecting plate, and the fixing plate is fixedly connected to the stainless steel drainage ring.

[0018] Preferably, the reinforcement mechanism includes a second housing fixedly connected to the top of the support base, a fourth spring fixedly connected inside the second housing, a fourth L-shaped plate fixedly connected to the other end of the fourth spring, the upper surface of the fourth L-shaped plate contacting the bottom surface of the U-shaped connecting plate, and a U-shaped guide plate fixedly connected to the side of the fourth L-shaped plate near the second housing, and the U-shaped guide plate being slidably connected to the second housing. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of the AC surge arrester with gap in this application;

[0020] Figure 2 is a structural schematic diagram of the concealed mounting bracket, surge arrester body, and circular plate of this application;

[0021] Figure 3 is a cross-sectional view of the stainless steel drainage ring and the mounting bracket after the connection is completed.

[0022] Figure 4 is a cross-sectional view of the stainless steel drainage ring during disassembly.

[0023] Figure 5 is a structural schematic diagram of the support base of this application;

[0024] Figure 6 is a schematic diagram of the stainless steel drainage ring of this application;

[0025] Figure 7 is a structural schematic diagram of the limiting mechanism of this application;

[0026] Figure 8 is a schematic diagram of the structure of the limiting block of this application;

[0027] Figure 9 is a schematic diagram showing the connection between the right-angle baffle and the third L-shaped plate in this application;

[0028] Figure 10 is a schematic diagram of the connection between the second sliding plate and the limiting rod of this application;

[0029] Figure 11 is a schematic diagram of the regulating mechanism of this application; and

[0030] Figure 12 is a structural schematic diagram of the reinforcement mechanism of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 2. Surge arrester body; 3. Circular plate; 4. Support plate; 5. Rectangular frame; 6. Fixing plate; 7. U-shaped connecting plate; 8. Stainless steel current-draining ring; 9. Pressure column; 10. First spring; 11. Pressure plate; 12. First toothed plate; 13. Support base; 14. Right-angle baffle; 15. Right-angle limiting plate; 16. Moving plate; 17. First L-shaped plate; 18. Second L-shaped plate; 19. First triangular block; 20. Second triangular block; 21. First rotating shaft; 22. One-way bearing; 23. 24. First gear; 25. Second gear; 26. Second toothed plate; 27. Second spring; 28. First sliding plate; 29. ​​Second sliding plate; 20. Third toothed plate; 31. Limiting rod; 32. Limiting block; 33. Inclined groove; 34. Limiting hole; 35. Third L-shaped plate; 36. First housing; 37. Third spring; 38. Second housing; 39. Fourth L-shaped plate; 40. U-shaped guide plate; 41. Fourth spring; 42. Second rotating shaft; 43. Third gear; 44. Threaded rod; 45. Threaded plate; 46. Cylinder. Detailed Implementation

[0032] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0033] As shown in Figures 1-4, a gapped AC surge arrester includes a surge arrester body 2 and a pressure column 9. A stainless steel current-carrying ring 8 is installed on the pressure column 9. A mounting bracket 1 is installed at the bottom of the surge arrester body 2. A circular plate 3 is fixedly installed on the top of the surge arrester body 2. A support plate 4 is fixedly connected to the side of the circular plate 3 away from the surge arrester body 2. A rectangular frame 5 is fixedly connected to the side of the support plate 4 away from the circular plate 3. A support seat 13 is rotatably mounted on the upper surface of the rectangular frame 5. A chamber for the pressure column 9 to slide up and down is opened inside the support seat 13. A first spring 10 is fixedly connected inside the chamber. A pressure plate 11 is fixedly connected to the other end of the first spring 10. The bottom end of the pressure column 9 presses against the upper surface of the pressure plate 11. After the pressure column 9 is inserted into the support seat 13, the pressure column 9 will first contact the pressure plate 11. At this time, continuing to press down on the pressure column 9 will drive the pressure plate 11 to move downward and compress the first spring 10.

[0034] As shown in Figures 2 and 6, a U-shaped connecting plate 7 is fixedly connected to the top of the pressure column 9, and a fixing plate 6 is fixedly connected to the upper surface of the U-shaped connecting plate 7. The fixing plate 6 is also fixedly connected to the stainless steel drainage ring 8.

[0035] As shown in Figures 5, 7, and 8, the support base 13 is internally equipped with a clamping mechanism for limiting the U-shaped connecting plate 7. The clamping mechanism includes two right-angle limiting plates 15 located on the upper surface of the support base 13. A movable plate 16 is fixedly connected to the bottom surface of each of the two right-angle limiting plates 15. Both movable plates 16 are horizontally slidably connected inside the support base 13. The clamping mechanism also includes two cylinders 45, which are respectively embedded in the two sides of the support base 13. A movable plate 16 is fixedly connected inside each of the two cylinders 45. The third spring 36, the other end of the two third springs 36 are fixedly connected to the opposite sides of the two movable plates 16. When the two movable plates 16 slide outward, the third spring 36 can be compressed. The movement of the movable plates 16 can drive the right angle limiting plate 15 to move accordingly. After the two right angle limiting plates 15 slide outward to the maximum extent, the right angle limiting plate 15 no longer contacts the U-shaped connecting plate 7. When the two right angle limiting plates 15 slide inward to the maximum extent, the right angle limiting plate 15 will press against the U-shaped connecting plate 7.

[0036] As shown in Figures 3, 4, and 7, a pressing mechanism is provided below the pressure plate 11 to drive the two right-angle limiting plates 15 to expand outward simultaneously. The pressing mechanism includes a first L-shaped plate 17 and a second L-shaped plate 18 fixedly connected to the outer surface of the moving plate 16. The outer surfaces of the two first L-shaped plates 17 and the two second L-shaped plates 18 are all fixedly connected to a first triangular block 19. The first L-shaped plate 17, the second L-shaped plate 18, and the first triangular block 19 are all horizontally slidably connected inside the support base 13. The bottom surface of the pressure plate 11 is fixedly connected to a second triangular block 20, and the second triangular block 20 corresponds one-to-one with the first triangular block 19. When the pressure plate 11 moves downward, it can drive the second triangular block 20 to move accordingly. When the second triangular block 20 moves to contact the first triangular block 19, it can continue to move downward and squeeze the first triangular block 19 to one side. The movement of the first triangular block 19 can drive the moving plate 16 and the right-angle limiting plate 15 to move accordingly.

[0037] As shown in Figures 5, 7 and 8, both sides of the support base 13 are fixedly connected to the first housing 35. The two first housings 35 are provided with a limiting mechanism. The limiting mechanism includes a limiting block 31 fixedly connected to the outer surface of the first L-shaped plate 17. The end of the limiting block 31 away from the first L-shaped plate 17 passes through the support base 13 and is inserted into the interior of the first housing 35. The side of the limiting block 31 near the pressure plate 11 is provided with a groove 32 and a limiting hole 33. The depth of the groove 32 gradually becomes shallower from the outside to the inside. The limiting hole 33 is connected to the groove 32 and is located at the innermost end of the groove 32. The limiting block 31 can slide horizontally along the support base 13.

[0038] As shown in Figures 7-10, a first sliding plate 27 and a second sliding plate 28 are slidably connected inside the first housing 35. A third toothed plate 29 is fixedly connected between the first sliding plate 27 and the second sliding plate 28. A limiting rod 30, which is adapted to the inclined groove 32 and the limiting hole 33, is fixedly connected to the side of the second sliding plate 28 away from the first sliding plate 27. A second spring 26 is fixedly connected to the side of the first sliding plate 27 away from the second sliding plate 28, and the other end of the second spring 26 is fixedly connected to the inner wall of the first housing 35. A first rotating shaft 21 is rotatably mounted between the first housing 35 and one side of the support base 13. A second gear 24 is mounted on the outer surface of the first rotating shaft 21, and the second gear 24 meshes with the third toothed plate 29. When the limiting rod 30 is inserted into the inclined groove 32, the second spring 26 is in a compressed state. When the limiting rod 30 is inserted into the limiting hole 33, the second spring 26 is in a free state. When the limiting block 31 slides from the inside to the outside, the inclined groove 32 will gradually squeeze the limiting rod 30 to move away from the limiting block 31. The movement of the limiting rod 30 can drive the second sliding plate 28, the first sliding plate 27, etc. to move accordingly and compress the second spring 26. When the limiting block 31 moves outward to the maximum extent, the limiting rod 30 will be concentric with the limiting hole 33. At this time, under the action of the second spring 26, the limiting rod 30 will be inserted into the limiting hole 33, thereby limiting the limiting block 31 and the right angle limiting plate 15, etc.

[0039] As shown in Figures 5, 7, 9, and 10, a first rotating shaft 21 is rotatably mounted between the first housing 35 and one side of the support base 13. A second gear 24 is mounted on the outer surface of the first rotating shaft 21, and the second gear 24 meshes with a third toothed plate 29. A third L-shaped plate 34 is fixedly connected to the outer surface of the right-angle baffle 14. The side of the third L-shaped plate 34 away from the pressure plate 11 passes through the support base 13 and is inserted into the interior of the first housing 35. A second toothed plate 25 is fixedly connected to the upper surface of the portion of the third L-shaped plate 34 located inside the first housing 35. A one-way bearing 22 is mounted on the outer surface of the first rotating shaft 21, and a first gear 23 is mounted on the one-way bearing 22. The first gear 23 meshes with the second toothed plate 25. The third L-shaped plate 34 can slide up and down along the support base 13. When the pressure column 9 presses down on the pressure plate 11 and moves downward, it can drive the third L-shaped plate 34 and the second toothed plate 25 to move downward. The downward movement of the second toothed plate 25 can drive the first gear. 23. The one-way bearing 22 and the second gear 24 rotate in the forward direction. The forward rotation of the second gear 24 can drive the third tooth plate 29 and the limiting rod 30 to move horizontally away from the limiting block 31 and compress the second spring 26. When the limiting rod 30 is completely moved out of the limiting hole 33, the limiting block 31 can be released. Then, under the action of the third spring 36, the limiting block 31 and the right-angle limiting plate 15 will move inward to reset. After that, the fixing plate 6 is released. Under the action of the first spring 10, the pressure plate 11, the pressure column 9 and the U-shaped connecting plate 7 will move upward. At this time, the pressure plate 11 will press against the pressure column 9, and the two right-angle limiting plates 15 will press against the U-shaped connecting plate 7, thereby fixing the pressure column 9 and the stainless steel drain ring 8. When the pressure plate 11 drives the second tooth plate 25 to move upward, under the action of the one-way bearing 22, the second tooth plate 25 will only drive the second gear 24 to rotate freely and will not drive the first rotating shaft 21 and the second gear 24 to rotate.

[0040] As shown in Figure 7, right-angle baffles 14 are fixedly connected to both sides of the pressure plate 11. The right-angle baffles 14 are used to block the two moving plates 16. After the stainless steel drainage ring 8 is fixed, the two right-angle baffles 14 will be close to the outer side of the two moving plates 16 respectively. After the stainless steel drainage ring 8 is released, the two right-angle baffles 14 will be close to the inner side of the two moving plates 16 respectively. When the limiting rod 30 moves out of the limiting hole 33, the right-angle baffles 14 will move to a position where they do not contact the moving plates 16.

[0041] As shown in Figure 11, the rectangular frame 5 is equipped with an adjustment mechanism for adjusting the angle of the support base 13. The adjustment mechanism includes a second rotating shaft 41, one end of which is rotatably mounted inside the support plate 4, and the other end of which is fixedly connected to the support base 13. A third gear 42 is fixedly connected to the outer surface of the second rotating shaft 41. A threaded rod 43 is rotatably mounted inside the rectangular frame 5, one end of which is fixedly connected to a knob. A threaded plate 44 is threadedly connected to the outer surface of the threaded rod 43. A sliding connection is made inside the rectangular frame 5. A first toothed plate 12 is fixedly connected to the threaded plate 44 near the third gear 42, and the first toothed plate 12 meshes with the third gear 42. Turning the knob rotates the threaded rod 43, which in turn moves the threaded plate 44 and the first toothed plate 12 horizontally along the threaded rod 43. The horizontal movement of the first toothed plate 12 rotates the third gear 42, the second rotating shaft 41, the support base 13, and the stainless steel drainage ring 8, allowing for fine-tuning of the angle of the stainless steel drainage ring 8. Therefore, by setting an adjustment mechanism, the stainless steel drainage ring can be precisely installed to a specified angle.

[0042] As shown in Figures 2 and 12, two symmetrical reinforcing mechanisms are provided above the support base 13. The reinforcing mechanism includes a second housing 37 fixedly connected to the top of the support base 13. A fourth spring 40 is fixedly connected inside the second housing 37. A fourth L-shaped plate 38 is fixedly connected to the other end of the fourth spring 40. The upper surface of the fourth L-shaped plate 38 is in contact with the bottom surface of the U-shaped connecting plate 7. A U-shaped guide plate 39 is fixedly connected to the side of the fourth L-shaped plate 38 near the second housing 37, and the U-shaped guide plate 39 is slidably connected to the second housing 37. By setting up the reinforcing mechanism, after the stainless steel drainage ring 8 is fixed, the U-shaped connecting plate 7 can be supported, preventing the U-shaped connecting plate 7 from moving downward on its own, thereby effectively improving the installation stability of the stainless steel drainage ring 8.

[0043] Working principle: When installing the stainless steel drainage ring 8, first insert the pressure column 9 into the support base 13 and make the pressure column 9 contact the pressure plate 11 inside the support base 13. Then press down on the fixing plate 6. The fixing plate 6 can drive the pressure column 9 and the pressure plate 11 to move downward and compress the first spring 10. The downward movement of the pressure plate 11 can drive the right-angle baffle 14 and the second toothed plate 25 to move downward. The downward movement of the second toothed plate 25 can drive the first gear 23, the one-way bearing 22 and the second gear 24 to rotate forward. The forward rotation of the second gear 24 can drive the third toothed plate 29 and the limiting rod 30 to move horizontally away from the limiting block 31 and compress the second spring 26. When the limiting rod 30 is completely removed from the inside of the limiting hole 33, the right-angle baffle 10 is compressed. The baffle 14 will move to a position where it does not contact the moving plate 16, thereby releasing the limit on the limiting block 31. Then, under the action of the third spring 36, the limiting block 31 and the right-angle limiting plate 15 will move inward to reset. After that, the fixing plate 6 is released. Under the action of the first spring 10, the pressure plate 11, the pressure column 9, and the U-shaped connecting plate 7 will move upward. At this time, the pressure plate 11 will press against the pressure column 9, and the two right-angle limiting plates 15 will press against the U-shaped connecting plate 7, thereby fixing the pressure column 9 and the stainless steel drain ring 8, etc. When the pressure plate 11 drives the second toothed plate 25 to move upward, under the action of the one-way bearing 22, the second toothed plate 25 will only drive the second gear 24 to rotate freely, and will not drive the first rotating shaft 21 and the second gear 24 to rotate.

[0044] When disassembling the stainless steel drainage ring 8, first push the two fourth L-shaped plates 38 outward. The outward movement of the two fourth L-shaped plates 38 will compress the two fourth springs 40. When the fourth L-shaped plates 38 move to a point where they are no longer in contact with the U-shaped connecting plate 7, press down on the fixing plate 6. The fixing plate 6 can drive the pressure column 9 and the pressure plate 11 to move downward and compress the first spring 10. The downward movement of the pressure plate 11 can drive the second triangular block 20 and the second toothed plate 25 to move downward. When the second triangular block 20 moves to a point where it contacts the first triangular block 19, the limiting rod 30 will move out of the inside of the inclined groove 32. Then, the second triangular block 20 continues to move downward, squeezing the first triangular block 19, the moving plate 16, and the limiting rod. Block 31 and right-angle limiting plate 15 move outward. At the same time, the second toothed plate 25 continues to move downward and will not mesh with the first gear 23. At this time, under the action of the second spring 26, the limiting rod 30 will be inserted into the inside of the inclined groove 32 again. When the right-angle limiting plate 15 moves outward to the maximum extent, the limiting rod 30 will be concentric with the limiting hole 33. At this time, under the action of the second spring 26, the limiting rod 30 will be inserted into the inside of the limiting hole 33, thereby limiting the limiting block 31 and right-angle limiting plate 15. Then, the fixing plate 6 is released. Under the action of the first spring 10, the pressure plate 11 will rebound upward to the reset position. Then, the pressure column 9 and stainless steel drainage ring 8 can be removed.

[0045] Through the cooperation of the pressure plate 11, the first spring 10, the right-angle baffle 14, the clamping mechanism, the squeezing mechanism, and the limiting mechanism, when installing the stainless steel drainage ring 8, the pressure column 9 is fully inserted into the support base 13, and then the pressure plate 11 is pressed down to fix the stainless steel drainage ring 8. When disassembling the stainless steel drainage ring 8, the pressure plate 11 is pressed down to the maximum extent to release the fixation of the stainless steel drainage ring 8, and then the stainless steel drainage ring 8 can be removed. The entire disassembly and assembly process only requires the operator to operate with one hand, and the other hand can grab an external object to stabilize their body, which not only improves the operator's ease of operation, but also improves the safety of operation.

[0046] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0048] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A surge arrester with a gap, comprising an arrester body (2) and a pressure column (9), characterized in that, A stainless steel current-draining ring (8) is installed on the pressure column (9), and a support base (13) is installed on the main body (2) of the surge arrester. The support base (13) has a cavity for the pressure column (9) to slide up and down. A first spring (10) is fixedly connected inside the cavity. A pressure plate (11) is fixedly connected to the other end of the first spring (10). The bottom end of the pressure column (9) presses against the upper surface of the pressure plate (11). Two symmetrical reinforcement mechanisms are provided above the support base (13). The support base (13) is provided with a clamping mechanism for limiting the U-shaped connecting plate (7). The clamping mechanism includes two right-angle limiting plates (15) located on the upper surface of the support base (13). The bottom surfaces of the two right-angle limiting plates (15) are fixedly connected to moving plates (16). The two moving plates (16) are horizontally slidably connected inside the support base (13). A pressing mechanism is provided below the pressure plate (11). The two sides of the support base (13) are fixedly connected to first housings (35). The interiors of the two first housings (35) are provided with limiting mechanisms. The pressing mechanism includes a first L-shaped plate (17) and a second L-shaped plate (18) fixedly connected to the outer surface of the movable plate (16). A first triangular block (19) is fixedly connected to the outer surfaces of both first L-shaped plates (17) and both second L-shaped plates (18). The first L-shaped plates (17), second L-shaped plates (18), and first triangular blocks (19) are all horizontally slidably connected inside the support base (13). A second triangular block (20) is fixedly connected to the bottom surface of the pressure plate (11), and the second triangular block (20) corresponds one-to-one with the first triangular block (19). The limiting mechanism includes a limiting block (31) fixedly connected to the outer surface of the first L-shaped plate (17), and the end of the limiting block (31) away from the first L-shaped plate (17) passes through the support base (13) and is inserted into the interior of the first housing (35). The side of the limiting block (31) near the pressure plate (11) is provided with a slanted groove (32) and a limiting hole (33), and the depth of the slanted groove (32) gradually becomes shallower from the outside to the inside. The limiting hole (33) is connected to the slanted groove (32) and is located at the innermost end of the slanted groove (32).

2. The AC surge arrester with gap according to claim 1, characterized in that, Both sides of the pressure plate (11) are fixedly connected with right-angle baffles (14), which are used to block the two moving plates (16).

3. The AC surge arrester with gap according to claim 1, characterized in that, The clamping mechanism also includes two cylinders (45), which are respectively embedded in the two sides of the support base (13). A third spring (36) is fixedly connected inside each of the two cylinders (45), and the other end of each of the two third springs (36) is fixedly connected to the side of the two moving plates (16) that are far apart from each other.

4. The AC surge arrester with gap according to claim 1, characterized in that, The first housing (35) has a first sliding plate (27) and a second sliding plate (28) slidably connected inside. A third toothed plate (29) is fixedly connected between the first sliding plate (27) and the second sliding plate (28). A limiting rod (30) that is adapted to the inclined groove (32) and the limiting hole (33) is fixedly connected to the side of the second sliding plate (28) away from the first sliding plate (27). A second spring (26) is fixedly connected to the side of the first sliding plate (27) away from the second sliding plate (28), and the other end of the second spring (26) is fixedly connected to the inner wall of the first housing (35).

5. The AC surge arrester with gap according to claim 2, characterized in that, A first rotating shaft (21) is rotatably mounted between the first housing (35) and one side of the support base (13). A second gear (24) is mounted on the outer surface of the first rotating shaft (21), and the second gear (24) meshes with a third toothed plate (29). A third L-shaped plate (34) is fixedly connected to the outer surface of the right-angle baffle (14). The side of the third L-shaped plate (34) away from the pressure plate (11) passes through the support base (13) and is inserted into the interior of the first housing (35). A second toothed plate (25) is fixedly connected to the upper surface of the portion of the third L-shaped plate (34) located inside the first housing (35). A one-way bearing (22) is mounted on the outer surface of the first rotating shaft (21), and a first gear (23) is mounted on the one-way bearing (22). The first gear (23) meshes with the second toothed plate (25).

6. The AC surge arrester with gap according to claim 1, characterized in that, A mounting bracket (1) is installed at the bottom of the surge arrester body (2), and a circular plate (3) is fixedly installed at the top of the surge arrester body (2). A support plate (4) is fixedly connected to the side of the circular plate (3) away from the surge arrester body (2), and a rectangular frame (5) is fixedly connected to the side of the support plate (4) away from the circular plate (3). The support base (13) is rotatably disposed on the upper surface of the rectangular frame (5). An adjustment mechanism for adjusting the angle of the support base (13) is provided inside the rectangular frame (5). The adjustment mechanism includes a second rotating shaft (41), one end of which is rotatably mounted inside the support plate (4). The second rotating shaft (41) is fixedly connected to the support base (13) at one end. A third gear (42) is fixedly connected to the outer surface of the second rotating shaft (41). A threaded rod (43) is rotatably installed inside the rectangular frame (5). A knob is fixedly connected to one end of the threaded rod (43). A threaded plate (44) is threadedly connected to the outer surface of the threaded rod (43), and the threaded plate (44) is slidably connected inside the rectangular frame (5). A first toothed plate (12) is fixedly connected to the side of the threaded plate (44) near the third gear (42), and the first toothed plate (12) meshes with the third gear (42).

7. The AC surge arrester with gap according to claim 1, characterized in that, The top of the pressure column (9) is fixedly connected to a U-shaped connecting plate (7), and a fixing plate (6) is fixedly connected to the upper surface of the U-shaped connecting plate (7), and the fixing plate (6) is fixedly connected to a stainless steel drainage ring (8).

8. A surge arrester with a gap according to claim 7, characterized in that, The reinforcement mechanism includes a second housing (37) fixedly connected to the top of the support base (13). A fourth spring (40) is fixedly connected inside the second housing (37). A fourth L-shaped plate (38) is fixedly connected to the other end of the fourth spring (40). The upper surface of the fourth L-shaped plate (38) is in contact with the bottom surface of the U-shaped connecting plate (7). A U-shaped guide plate (39) is fixedly connected to the side of the fourth L-shaped plate (38) near the second housing (37), and the U-shaped guide plate (39) is slidably connected to the second housing (37).

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