Outdoor alternating-current high-pressure jet fuse

Abstract

The invention discloses an outdoor alternating-current high-pressure jet fuse, and belongs to the field of emergency protection devices. Comprising a fuse body, an annular first clamping plate and an annular second clamping plate, an annular groove is formed in the middle of the outer wall of the fuse body. A clamping groove is formed in the bottom face of one side of the annular groove. A containing cavity is formed in the inner side of the first clamping plate, and the second clamping plate is rotationally connected into the first clamping plate and arranged on the outer side of the annular groove in a sleeving mode. A through U-shaped plate is inserted into the second clamping plate; the upper end of the second clamping plate is connected with a rotation driving assembly; the second clamping plate rotates to push the U-shaped plate to be inserted into the clamping groove, so that the fuse body is fixed. The outer wall of the first clamping plate is connected with a connecting block, and the other end of the connecting block is rotationally connected into the connecting rod through a rotating rod. The other ends of the connecting rods are connected with mounting brackets. In the process of replacing the fuse, a worker only needs to take and place the fuse by a single hand, so that the device is convenient to mount and dismount, and is particularly suitable for high-altitude replacement operation.

Description

Technical Field

[0001] This invention belongs to the field of emergency protection devices, and particularly relates to an outdoor AC high-voltage jet fuse. Background Technology

[0002] A high-voltage ejector fuse, also known as a high-voltage ejector fuse, is an emergency protection device in power systems, primarily used for short-circuit and overcurrent protection in power distribution systems. Its structure includes a fusible element, a casing, and a support. An electric arc is generated by the melting of the fusible element, and the arc is extinguished by the decomposition of a gas-generating medium to form high-pressure gas.

[0003] 1. Arc extinguishing principle:

[0004] A jet-type fuse contains a fusible element inside an insulating tube made of a solid gas-generating material, such as electrical whiteboard or plexiglass. When a short-circuit current passes through the fusible element, it melts and generates an electric arc. The high-temperature arc causes the solid gas-generating material to rapidly decompose, producing a large amount of high-pressure gas. This ionized gas, carrying the arc, is ejected from both ends of the tube, emitting a loud audible and visual noise. The arc is extinguished when the alternating current crosses zero, thus breaking the current.

[0005] 2. Structural features:

[0006] Its fusible element tube adopts a fully enclosed structure to avoid interference from the external environment, and combined with a slit arc extinguishing method, it improves arc extinguishing stability and safety. Compared with traditional drop-out fuses, it has a stronger breaking current capacity.

[0007] As a commonly used emergency protection device, ejector fuses can be classified according to their venting method into double-end venting, single-end venting, and step-by-step venting; according to their arc-extinguishing medium, they are currently classified into types such as engineering composite pipe, boric acid, and solid materials; and according to their operating structure, they are mainly classified into pop-out type, open isolation type, and drop-out type.

[0008] Utility model patent CN 2729897 Y, with authorization announcement date of September 28, 2005, discloses an "outdoor AC high-voltage jet-type drop-out fuse." The moving contact on the composite tube is designed as a spherical contact with an annular spherical contact surface. This moving contact, in conjunction with the upper stationary contact, not only shortens the switching stroke and improves the safety and reliability of the switching action, but also ensures that the upper contact component is in a completely closed contact state. The switch contact is tightly pushed and fixed to the insulating support body in a circular push manner. This technical solution features high mechanical and static fit, tight dynamic fit, high reliability, and high safety performance.

[0009] The invention patent with authorization announcement date of November 26, 2024, and authorization announcement number CN 115483078 B, discloses an "environmentally friendly epoxy resin enclosed high-voltage injection fuse," which includes a column insulator body. Connecting pieces are symmetrically fixedly installed on the side wall of the column insulator body. Two baffles are provided on the right side of the column insulator body. Each baffle has a T-shaped groove inside. The two connecting pieces are slidably installed in the two T-shaped grooves. A first screw is threadedly installed inside each baffle. An internal threaded ring is threaded on the surface of each of the two first screws. An electrode connecting plate is provided on the opposite end of each of the two baffles. The two electrode connecting plates are connected to the two baffles through the two first screws and the internal threaded rings, respectively. The sliding cylinder slides upward inside the annular groove, thereby exposing the exhaust groove to the outside, thus forming bidirectional exhaust to reduce the pressure of the exhaust groove and prevent the exhaust groove from bursting and being damaged when interrupting a large fault current, thereby improving the performance of the equipment.

[0010] When using the enclosed high-pressure jet fuse with the above structure, during actual maintenance and replacement operations, the worker needs to hold the fuse while tightening the bolt mechanism when replacing it by fixing it with bolts. This means that when workers are working at height, both of their hands are in a working state, which increases the risk of working at height.

[0011] Currently, the development and research of high-voltage ejector fuses focus on the following aspects:

[0012] 1) Improve performance according to the new version of 1EC282-2, conduct tests with different requirements for different applications, develop high-efficiency gas-generating materials and reasonable structures, and carry out applied research on multi-fracture melt technology.

[0013] 2) Improve the manufacturing level of fuse components, especially the stability of melt materials, and develop silver-free low-melting-point melt material technology, such as tin, platinum, copper, aluminum and alloy materials, as well as bimetallic melt technology;

[0014] 3) Develop jet-type fuses with current of 200-400A and reloadable fuses of 12kV-40.5kV, and conduct research on the application of single-use fuses of 69-126kV.

[0015] 4) Develop indoor ejector fuse products, such as noise-proof, fire-proof, explosion-proof and hybrid fuses;

[0016] 5) Expand the service functionality of jet-type fuses, such as fuses for high-efficiency load shedding devices, and fuses with combined functions such as surge arresters, reclosing fuses, and three-way linkage fuses.

[0017] However, none of the research directions mentioned above have considered how to improve the ease of installation and disassembly and ensure the safety of high-altitude replacement operations during fuse replacement. Summary of the Invention

[0018] The purpose of this invention is to provide an outdoor AC high-voltage ejector fuse. By setting a rotatable and adjustable connecting block and a first locking plate, the fuse body can be stably locked and supported when it is in a horizontal position during disassembly and installation. A servo motor is used to complete the locking and unlocking of the fuse body. During the replacement of the fuse, the operator only needs to adjust the rotation of the first locking plate with one hand, and then the servo motor drives the second locking plate to move. Then, the operator can pick up and place the fuse with one hand. The installation and disassembly are convenient and it is especially suitable for high-altitude replacement operations.

[0019] To achieve the above objectives, the present invention provides the following technical solution: an outdoor AC high-voltage ejector fuse, comprising a fuse body, including an annular first retaining plate and an annular second retaining plate; an annular groove is formed in the middle of the outer wall of the fuse body, and a retaining groove is formed on the bottom surface of one side of the annular groove;

[0020] The first card plate has a receiving cavity on its inner side, and the second card plate is rotatably connected to the first card plate and sleeved on the outer side of the annular groove; a through U-shaped plate is inserted into the second card plate;

[0021] The upper end of the second card is connected to a rotation drive assembly;

[0022] The second card plate rotates to push the U-shaped plate into the slot, thus fixing the fuse body.

[0023] By setting up a rotatable and adjustable connecting block and a first clamping plate, the fuse body can be stably clamped and supported when it is in a horizontal position during disassembly and installation. The clamping and fixing and release of the fuse body are completed by a servo motor. During the replacement of the fuse, the operator only needs to adjust the rotation of the first clamping plate with one hand, and then drive the second clamping plate to move through the servo motor. Then, the operator can pick up and place the fuse with one hand. The installation and disassembly are convenient and it is especially suitable for high-altitude replacement operations.

[0024] Preferably, the outer wall of the first card plate is connected to a connecting block, and the other end of the connecting block is rotatably connected to a connecting rod via a rotating rod; the other end of the connecting rod is connected to a mounting bracket.

[0025] Preferably, a balancing groove is formed at the bottom of the receiving cavity, and a balancing rod is connected to the bottom of the second card plate, the balancing rod being slidably connected within the balancing groove.

[0026] Preferably, the rotation drive assembly includes an arc-shaped rack connected to the upper end of the second clamping plate; the upper end of the connecting block is connected to a mounting platform, a servo motor is connected to the mounting platform, the output end of the servo motor is connected to a gear, and the gear meshes with the rack.

[0027] Preferably, a through groove is formed on the first card plate, and both ends of the U-shaped plate pass through the through groove, with one end protruding on the outside of the first card plate and the other end protruding on the inside of the first card plate;

[0028] A spring is provided between the inner side of the U-shaped plate and the inner wall of the first card plate.

[0029] Preferably, a driven rod is connected to each of the upper and lower ends of the U-shaped plate;

[0030] An arc-shaped groove is formed on the second card plate, and a second groove is formed at the bottom of the arc-shaped groove. The second groove is connected to a first groove through a guide groove, and the driven rod slides in the second groove, the guide groove and the first groove.

[0031] Preferably, an adjustment groove is provided at one end of the rotating rod near the mounting bracket, and limit grooves are provided at both ends of the adjustment groove. A positioning rod is connected to the inner side of the connecting rod, and the positioning rod is slidably connected in the adjustment groove and the limit groove.

[0032] Preferably, it also includes a T-shaped sleeve, wherein an annular slot is formed on one end face of the rotating rod near the mounting bracket, the T-shaped sleeve passes through the tail of the connecting rod, one end is connected to the annular slot, a sliding groove is formed on the inner side of the annular slot, and a slider is connected to the inner wall of the T-shaped sleeve, the slider being slidably connected in the sliding groove;

[0033] The T-shaped sleeve is connected to a second driven gear at one end outside the connecting rod, and the second driven gear is meshed with a second driving gear; an electric push rod is connected to the inside of the T-shaped sleeve, and the output end of the electric push rod is connected to the rotating rod.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] This outdoor AC high-voltage ejector fuse features a rotatable and adjustable connecting block and a first locking plate. The adjustable connecting block and first locking plate allow the first locking plate to rotate 90° to a horizontal position during fuse installation and removal. The U-shaped plate engages with the locking slot, providing stable support for the fuse body when it is horizontal. A servo motor controls the locking and unlocking of the fuse body. During fuse replacement, workers only need to adjust the rotation of the first locking plate with one hand, then the servo motor drives the second locking plate to move, allowing for easy one-handed handling of the fuse. This convenient installation and removal method is particularly suitable for high-altitude replacement work. Attached Figure Description

[0036] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0037] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 This is a schematic diagram of the annular groove in the present invention.

[0039] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of area A in the middle.

[0040] Figure 4 This is a schematic diagram of the internal structure of the connecting rod in this invention.

[0041] Figure 5 This is a schematic diagram of the structure of the second card plate in this invention.

[0042] Figure 6 This is a schematic diagram of the structure of the first card plate in this invention.

[0043] Figure 7 This is a schematic diagram of the U-shaped plate in this invention.

[0044] Figure 8 This is a schematic diagram of the arc-shaped groove in this invention.

[0045] Figure 9 This is a schematic diagram of the internal structure of the arc-shaped groove in this invention.

[0046] Figure 10 For the present invention Figure 9 Schematic diagram of the structure of area B in the middle;

[0047] Figure 11 This is a cross-sectional view of the connecting rod in this invention.

[0048] In the diagram: 1 is the fuse body; 2 is the annular groove; 3 is the slot; 4 is the first locking plate; 5 is the second locking plate; 6 is the connecting block; 7 is the connecting rod; 8 is the mounting bracket; 9 is the mounting platform; 10 is the servo motor; 11 is the gear; 12 is the rack; 13 is the rotating rod; 14 is the positioning rod; 15 is the adjusting groove; 16 is the limiting groove; 17 is the balance rod; 18 is the arc-shaped groove; 19 is the receiving cavity; 20 is the balance groove; 21 is the U-shaped plate; 22 is the driven rod; 23 is the through groove; 25 is the first groove; 26 is the second groove; 27 is the guide groove; 28 is the T-shaped sleeve; 29 is the sliding groove; 30 is the slider; 31 is the second driven gear; 32 is the second driving gear; 33 is the electric push rod. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] like Figure 1-11 As shown, an outdoor AC high-voltage jet-type fuse includes a fuse body 1, an annular first retaining plate 4, and an annular second retaining plate 5. An annular groove 2 is formed in the middle of the outer wall of the fuse body 1, and a retaining groove 3 is formed on the bottom surface of one side of the annular groove 2. A receiving cavity 19 is provided inside the first retaining plate 4, and the second retaining plate 5 is rotatably connected inside the first retaining plate 4 and sleeved on the outside of the annular groove 2. A through U-shaped plate 21 is inserted into the second retaining plate 5. A balance groove 20 is formed at the bottom of the receiving cavity 19, and a balance rod 17 is connected to the bottom of the second retaining plate 5. The balance rod 17 is slidably connected in the balance groove 20.

[0051] The second card plate 5 rotates to push the U-shaped plate 21 into the card slot 3, thus fixing the fuse body 1.

[0052] Specifically, the outer wall of the first card plate 4 is connected to the connecting block 6, and the other end of the connecting block 6 is rotatably connected to the connecting rod 7 via the rotating rod 13; the other end of the connecting rod 7 is connected to the mounting bracket 8. An adjustment groove 15 is opened at one end of the rotating rod 13 near the mounting bracket 8, and limit grooves 16 are opened at both ends of the adjustment groove 15. A positioning rod 14 is connected to the inner side of the connecting rod 7, and the positioning rod 14 is slidably connected in the adjustment groove 15 and the limit groove 16.

[0053] Specifically, it also includes a T-shaped sleeve 28, an annular slot is opened on one end face of the rotating rod 13 near the mounting bracket 8, the T-shaped sleeve 28 passes through the tail of the connecting rod 7, one end is connected to the annular slot, a sliding groove 29 is opened on the inner side of the annular slot, and a slider 30 is connected to the inner wall of the T-shaped sleeve 28, the slider 30 is slidably connected in the sliding groove 29; the end of the T-shaped sleeve 28 located outside the connecting rod 7 is connected to a second driven gear 31, the second driven gear 31 is meshed with a second driving gear 32, the second driving gear 32 is connected to a drive source, which can be a motor; an electric push rod 33 is connected to the inner side of the T-shaped sleeve 28, and the output end of the electric push rod 33 is connected to the rotating rod 13.

[0054] Specifically, when the connecting block 6 is in a horizontal position, the positioning rod 14 is located in the inner cavity of the limiting groove 16 near the location of the slot 3. When it is necessary to adjust the position of the connecting block 6, that is, to rotate from a horizontal state to a vertical state, the first card plate 4 connected to it will also rotate 90° synchronously. At this time, the electric push rod 33 pushes the rotating rod 13 forward, and the positioning rod 14 moves into the adjustment groove 15. At this time, the second driving gear 32 drives the second driven gear 31 to rotate, and the second driven gear 31 drives the T-shaped sleeve 28 to rotate. The rotation of the T-shaped sleeve 28 drives the rotating rod 13 to rotate, so that the positioning rod 14 moves from one end of the adjustment groove 15 to the other end. Then the electric push rod 33 retracts and drives the positioning rod 14 from the adjustment groove 15 to the limiting groove 16, completing the 90° rotation of the connecting block 6, thereby driving the connected first card plate 4 and the fuse body 1 to complete the 90° rotation, so that the fuse body 1 rotates from a vertical state to a horizontal state.

[0055] Specifically, the upper end of the second card plate 5 is connected to a rotation drive assembly; the rotation drive assembly includes an arc-shaped rack 12, which is connected to the upper end of the second card plate 5; the upper end of the connecting block 6 is connected to a mounting platform 9, a servo motor 10 is connected to the mounting platform 9, the output end of the servo motor 10 is connected to a gear 11, and the gear 11 meshes with the rack 12.

[0056] Specifically, a through groove 23 is provided on the first card plate 4, and the two ends of the U-shaped plate 21 pass through the through groove 23, with one end protruding outside the first card plate 4 and the other end protruding inside the first card plate 4; a spring is provided between the inner side of the U-shaped plate 21 and the inner wall of the first card plate 4.

[0057] Specifically, a driven rod 22 is connected to each of the upper and lower ends of the U-shaped plate 21; an arc-shaped groove 18 is opened on the second plate 5, and a second groove 26 is opened at the bottom of the arc-shaped groove 18. The second groove 26 is connected to the first groove 25 through the guide groove 27, and the driven rod 22 slides in the second groove 26, the guide groove 27 and the first groove 25.

[0058] Specifically, the rotation of the gear 11 driven by the motor drives the rack 12 to move, thereby causing the second clamping plate 5 to rotate synchronously. The upper middle part of the first clamping plate 4 has a receiving cavity 19, and the bottom of the inner cavity of the receiving cavity 19 has a balance groove 20. The lower middle part of the second clamping plate 5 is fixedly connected to a balance rod 17, which is slidably connected in the balance groove 20. When the gear 11 drives the rack 12 to move, it will drive the second clamping plate 5 to move the balance rod 17 in the inner cavity of the balance groove 20, thereby moving the second clamping plate 5 into the receiving cavity 19, thereby releasing the clamping and fixing of the second clamping plate 5 and the first clamping plate 4 to the fuse body 1, or driving the second clamping plate 5 to move out of the inner cavity of the receiving cavity 19, thereby clamping and fixing the outer wall of the fuse body 1.

[0059] Specifically, the outer wall of the first card plate 4 has symmetrical through slots 23 near the slot 3. A U-shaped plate 21 is slidably connected to the inner cavity of each of the symmetrical through slots 23. The through slots 23 and the slot 3 correspond in size and position. The inner cavity of the U-shaped plate 21 near the slot 3 is elastically connected to the side wall of the through slot 23 by a spring. The spring drives the U-shaped plate 21 away from the slot 3. That is, when the second card plate 5 is removed from the receiving cavity 19, the spring force causes the U-shaped plate 21 to separate from the inner cavity of the slot 3. At this time, the first card plate 4 and the second card plate 5 together form a... A closed annular structure, which cooperates with the annular groove 2, is used to snap and fix the fuse body 1. The tops of the first clamping plate 4 and the second clamping plate 5 are located in the same plane, which can provide stable fixed support for the fuse body 1. The movement of the second clamping plate 5 is driven by the motor. Even if the position of the fuse body 1, the first clamping plate 4, the second clamping plate 5 and the connecting block 6 changes, it will not affect the process of the motor driving the movement of the second clamping plate 5. The first clamping plate 4 and the second clamping plate 5 can be opened at any time and conveniently to fix or release the fuse body 1.

[0060] Specifically, when the fuse body 1 needs to be replaced, the traditional fixing structure can only fix the fuse body 1, but cannot support the position of the fuse body 1 to be replaced and the new fuse body 1 during the replacement process. As a result, when disassembling and installing the fuse body 1, the worker needs to hold the fuse body 1 while tightening the traditional bolt mechanism used to fasten the fuse body 1. This means that when the worker is in the air, both hands are in a working state when replacing the fuse body 1, and they cannot hold it to improve their stability, which increases the risk to the worker.

[0061] Specifically, the second clamping plate 5 has an arc-shaped groove 18 in the middle. The top and bottom of the inner cavity of the arc-shaped groove 18 each have a first groove 25. One end of the first groove 25 has a guide groove 27, and the end of the guide groove 27 away from the first groove 25 has a second groove 26. When the second clamping plate 5 moves away from the receiving cavity 19, the second groove 26 is located near the gear 11. When the second clamping plate 5 moves towards the receiving cavity 19, the second groove 26 gradually approaches the location of the U-shaped plate 21. A driven rod 22 is fixedly connected to the middle of both the upper and lower ends of the U-shaped plate 21. The driven rod 22 is connected to the first groove... 25. The inner cavities of guide groove 27 and second groove 26 slide together. When second groove 26 approaches U-shaped plate 21, driven rod 22 will enter the inner cavity of second groove 26. As the second retaining plate 5 goes deeper, driven rod 22 will move from the inner cavity of second groove 26 to the inner cavity of guide groove 27. With the cooperation of guide groove 27 and driven rod 22, U-shaped plate 21 will be pushed closer to retaining groove 3. After driven rod 22 moves from the inner cavity of guide groove 27 to the inner cavity of first groove 25, the end of U-shaped plate 21 is fully inserted into the inner cavity of retaining groove 3.

[0062] Specifically, when the fuse body 1 needs to be replaced, the electric push rod 33 pushes the rotating rod 13 forward, and the positioning rod 14 moves into the adjusting groove 15. At this time, the second driving gear 32 drives the second driven gear 31 to rotate, and the second driven gear 31 drives the T-shaped sleeve 28 to rotate. The rotation of the T-shaped sleeve 28 drives the rotating rod 13 to rotate, so that the positioning rod 14 moves from one end of the adjusting groove 15 to the other end. Then, the electric push rod 33 retracts and drives the positioning rod 14 from the adjusting groove 15 to the limiting groove 16, completing the 90° rotation of the connecting block 6. This, in turn, drives the first clamping plate 4 and the fuse body 1 to complete the 90° rotation, so that the fuse body 1 can be rotated from a vertical state to a horizontal state, thus completing the disassembly and replacement of the fuse body 1.

[0063] This outdoor AC high-voltage jet-type fuse features a rotatable and adjustable connecting block and a first locking plate. During fuse installation and removal, the first locking plate rotates 90° to a horizontal position. The U-shaped plate engages with the locking slot, providing stable support for the fuse when it is horizontal. A servo motor controls the locking and releasing of the fuse. When replacing the fuse, workers only need to adjust the rotation of the first locking plate with one hand, then the servo motor drives the second locking plate to move, allowing for easy handling of the fuse with a single hand. This convenient installation and removal method is particularly suitable for high-altitude replacement work.

[0064] The technical solution of this invention can be widely used in the design and manufacturing of outdoor enclosed jet fuses.

[0065] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An outdoor AC high-voltage ejection fuse, comprising a fuse body (1), characterized in that: It includes a first annular plate (4) and a second annular plate (5); an annular groove (2) is opened in the middle of the outer wall of the fuse body (1), and a slot (3) is opened on the bottom surface of one side of the annular groove (2); The first card plate (4) has a receiving cavity (19) on its inner side. The second card plate (5) is rotatably connected to the first card plate (4) and sleeved on the outside of the annular groove (2). A through U-shaped plate (21) is inserted into the second card plate (5). The upper end of the second card plate (5) is connected to the rotation drive assembly; The second card plate (5) rotates to push the U-shaped plate (21) into the slot (3) to fix the fuse body (1); By setting up a rotatable and adjustable connecting block and a first clamping plate, the fuse body can be stably clamped and supported when it is in a horizontal position during disassembly and installation. The clamping and fixing and release of the fuse body are completed by a servo motor. During the replacement of the fuse, the operator only needs to adjust the rotation of the first clamping plate with one hand, and then drive the second clamping plate to move through the servo motor. Then, the operator can pick up and place the fuse with one hand. The installation and disassembly are convenient and it is especially suitable for high-altitude replacement operations.

2. The outdoor AC high-voltage ejector fuse according to claim 1, characterized in that, The outer wall of the first card plate (4) is connected to a connecting block (6), and the other end of the connecting block (6) is rotatably connected to the connecting rod (7) via a rotating rod (13); the other end of the connecting rod (7) is connected to a mounting bracket (8).

3. The outdoor AC high-voltage ejector fuse according to claim 1, characterized in that, A balance groove (20) is provided at the bottom of the receiving cavity (19), and a balance rod (17) is connected to the bottom of the second card plate (5). The balance rod (17) is slidably connected in the balance groove (20).

4. The outdoor AC high-voltage ejector fuse according to claim 2, characterized in that, The rotation drive assembly includes an arc-shaped rack (12) connected to the upper end of the second clamping plate (5); the upper end of the connecting block (6) is connected to the mounting platform (9), the mounting platform (9) is connected to the servo motor (10), the output end of the servo motor (10) is connected to the gear (11), and the gear (11) meshes with the rack (12).

5. The outdoor AC high-voltage ejector fuse according to claim 2, characterized in that, A through groove (23) is provided on the first card plate (4), and both ends of the U-shaped plate (21) pass through the through groove (23), with one end protruding on the outside of the first card plate (4) and the other end protruding on the inside of the first card plate (4); A spring is provided between the inner side of the U-shaped plate (21) and the inner wall of the first card plate (4).

6. The outdoor AC high-voltage ejector fuse according to claim 5, characterized in that, The upper and lower ends of the U-shaped plate (21) are each connected to a driven rod (22); An arc-shaped groove (18) is provided on the second card plate (5), and a second groove (26) is provided at the bottom of the arc-shaped groove (18). The second groove (26) is connected to the first groove (25) through the guide groove (27). The driven rod (22) slides in the second groove (26), the guide groove (27) and the first groove (25).

7. The outdoor AC high-voltage ejector fuse according to claim 2, characterized in that, An adjustment groove (15) is provided at one end of the rotating rod (13) near the mounting bracket (8). Limiting grooves (16) are provided at both ends of the adjustment groove (15). A positioning rod (14) is connected to the inner side of the connecting rod (7). The positioning rod (14) is slidably connected in the adjustment groove (15) and the limiting groove (16).

8. The outdoor AC high-voltage ejector fuse according to claim 7, characterized in that, It also includes a T-shaped sleeve (28), and an annular slot is provided on one end face of the rotating rod (13) near the mounting bracket (8).

9. The outdoor AC high-voltage ejector fuse according to claim 8, characterized in that, The T-shaped sleeve (28) passes through the tail of the connecting rod (7) and one end is connected to the annular slot. A sliding groove (29) is opened on the inner side of the annular slot. A slider (30) is connected to the inner wall of the T-shaped sleeve (28), and the slider (30) is slidably connected in the sliding groove (29).

10. The outdoor AC high-voltage ejector fuse according to claim 9, characterized in that, The T-shaped sleeve (28) is connected to a second driven gear (31) at one end outside the connecting rod (7), and the second driven gear (31) is meshed with a second driving gear (32); the T-shaped sleeve (28) is connected to an electric push rod (33) on the inside, and the output end of the electric push rod (33) is connected to the rotating rod (13).

Images