Primary and secondary fusion pole-mounted circuit breaker with protection function

Abstract

The invention discloses a primary and secondary fusion pole-mounted circuit breaker with a protection function, and relates to the technical field of circuit breakers, the primary and secondary fusion pole-mounted circuit breaker comprises a circuit breaker body, the two sides of the circuit breaker body are fixedly connected with supporting frames respectively, the two supporting frames are provided with sliding holes respectively, and the two supporting frames are provided with mounting frames respectively; and protection mechanisms are arranged on the two mounting frames, first blowing mechanisms are arranged between the protection mechanisms and the mounting frames, and second blowing mechanisms are arranged between the protection mechanisms and the mounting frames. According to the primary and secondary fusion pole-mounted circuit breaker with the protection function, the supporting frames are arranged on the isolation frames on the two sides of the circuit breaker body, the mounting frames are mounted on the supporting frames, the top cover and the protection rod are arranged above the two mounting frames, and the top cover and the protection rod are matched to protect the side part of the circuit breaker body; sundries such as branches and convenient bags are prevented from being clamped on the circuit breaker body due to factors such as wind blowing, and the use effect is good.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically to a primary and secondary integrated pole-mounted circuit breaker with protective functions. Background Technology

[0002] The integrated primary and secondary pole-mounted circuit breaker is an outdoor power distribution device that highly integrates traditional high-voltage switchgear with intelligent control, measurement, protection, and other automation functions. It is mainly used for line control and protection in medium-voltage power distribution networks such as 10kV and 35kV. It breaks the traditional model where primary and secondary equipment belong to different manufacturers, are installed independently, and have incompatible interfaces. It achieves standardized and integrated hardware and software design, significantly improving the level of power distribution automation and operation and maintenance efficiency. Existing integrated primary and secondary pole-mounted circuit breakers with protective functions are directly exposed to the outside. When affected by wind and other natural factors, debris such as tree branches and plastic bags may adhere to the circuit breaker, affecting its operation. Furthermore, dust accumulates on the circuit breaker outdoors over a long period, which can reduce insulation performance, cause short circuits or flashovers, affect heat dissipation efficiency, and accelerate component aging. Current dust cleaning operations require manual climbing, which is inconvenient. Therefore, we propose an integrated primary and secondary pole-mounted circuit breaker with protective functions. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a primary and secondary integrated pole-mounted circuit breaker with protective functions, solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a primary and secondary integrated pole-mounted circuit breaker with protective function, comprising a circuit breaker body, support frames fixedly connected to both sides of the circuit breaker body, sliding holes provided on the two support frames, mounting brackets installed on the two support frames, protective mechanisms provided on the two mounting brackets, a first air blowing mechanism provided between the protective mechanism and the mounting bracket, a second air blowing mechanism provided between the protective mechanism and the mounting bracket, a fixing mechanism provided below the circuit breaker body, and multiple mounting holes provided on each support frame.

[0005] Optionally, the protective mechanism includes two sets of outer telescopic cylinders and two sets of first springs respectively fixedly connected to two mounting brackets. A top cover is fixedly connected to the top of each of the two sets of first springs. Two sets of inner telescopic cylinders are fixedly connected to the bottom of the top cover. The bottom ends of the two sets of inner telescopic cylinders are movably sleeved into the inner cavities of the two sets of outer telescopic cylinders. The sides of the inner telescopic cylinders are in contact with the inner walls of the outer telescopic cylinders. A vent hole is provided on the bottom surface of the mounting bracket directly below the outer telescopic cylinders. Multiple protective rods are provided on the side of the bottom surface of the top cover. Two pull columns are fixedly connected to the bottom surface of the top cover. The two pull columns are movably sleeved into the bottom of the mounting bracket and have through holes. The pull columns penetrate the inner cavity of the sliding holes. Long bolts are fitted into the inner cavities of the two through holes, and second nuts are threaded onto the ends of the long bolts.

[0006] Optionally, two hangers are fixedly connected to the bottom of the circuit breaker body. A fixed box is fixedly connected to the bottom end of the two hangers. Multiple second springs are fixedly connected to the inner wall of the fixed box. Movable blocks are fixedly connected to the ends of the multiple second springs. One end of the movable block extends to the outside of the fixed box and is fixedly connected to a fixed plate. A guide bevel is provided at the top of the fixed plate, and an arc-shaped groove is provided at the bottom of the fixed plate. The long bolt is sleeved in the inner cavity of the arc-shaped groove. A pull rod is fixedly connected to the other end of the movable block. The end of the pull rod is movably sleeved to the outside of the fixed box and is fixedly connected to a limit post. A pull ring is fixedly connected to one end of the limit post.

[0007] Optionally, the first air blowing mechanism includes a first piston cylinder fixedly connected to the top surface of a mounting bracket and a first piston rod fixedly connected to the bottom surface of a top cover. The bottom end of the first piston rod is movably sleeved into the inner cavity of the first piston cylinder and fixedly connected to a first piston block. The side of the first piston block is in contact with the inner wall of the first piston cylinder. Two air vents are provided on the side of the bottom end of the first piston cylinder. A first one-way valve is fixedly sleeved on the outer side of the top end of the first piston cylinder. A second one-way valve is fixedly sleeved on the inner side of the top end of the first piston cylinder. A guide steel pipe is fixedly connected to the end of the second one-way valve. A first air blowing pipe is fixedly connected to the bottom end of the guide steel pipe. A plurality of first air blowing holes are provided on the side of the first air blowing pipe.

[0008] Optionally, the second air blowing mechanism includes a second piston cylinder fixedly connected to the top surface of another mounting bracket and a second piston rod fixedly connected to the bottom surface of the top cover. The bottom end of the second piston rod is movably sleeved into the inner cavity of the second piston cylinder and fixedly connected to a second piston block. The side of the second piston block is in contact with the inner wall of the second piston cylinder. A third one-way valve is fixedly sleeved on the outer side of the bottom end of the second piston cylinder, and a fourth one-way valve is fixedly sleeved on the inner side of the bottom end of the second piston cylinder. A second air blowing pipe is fixedly sleeved on the end of the fourth one-way valve, and a plurality of second air blowing holes are provided on the side of the second air blowing pipe.

[0009] Optionally, the bottom surface of the mounting bracket is fixedly connected with multiple studs, the bottom ends of the multiple studs extending through the mounting holes to the bottom of the support bracket and threaded with a first nut.

[0010] Optionally, the outer diameter of the long bolt is equal to the inner diameter of the through hole and the arc-shaped groove, respectively.

[0011] Optionally, the side of the movable block is fitted with the inner wall of the fixed box, and the other end of the limiting post is fitted with the outer side of the fixed box.

[0012] This invention provides a primary and secondary integrated pole-mounted circuit breaker with protective functions, which has the following beneficial effects: 1. This type of primary and secondary integrated pole-mounted circuit breaker with protective function has support frames installed on the isolation frames on both sides of the circuit breaker body, and mounting frames installed on the support frames. A top cover and a protective rod are installed above the two mounting frames. The top cover and the protective rod work together to protect the sides of the circuit breaker body, preventing debris such as tree branches and plastic bags from getting stuck on the circuit breaker body due to wind and other factors, resulting in good performance.

[0013] 2. This type of primary and secondary integrated pole-mounted circuit breaker with protective function has a top cover and protective rod supported by an outer telescopic cylinder, a first spring, and an inner telescopic cylinder on the mounting frame. Through the cooperation of a long bolt and a pull column, the top cover and protective rod can be pulled downwards to overcome the elastic force of the first spring, allowing the top cover and protective rod to be positioned on the outside of the circuit breaker body for protection. A fixing mechanism is used to secure the long bolts, thus fixing the top cover and protective rod. When it is necessary to operate the handle on the circuit breaker body, a hook is used to hook the pull ring, and the pull ring is pulled. The pull ring drives the limit column, pull rod, movable block, and fixing plate to move laterally, thereby releasing the fixing plate from the long bolts. At this time, the restoring force of the first spring drives the top cover and protective rod upwards, so that the protective rod no longer protects the side of the circuit breaker body, allowing operation of the energy storage handle, opening / closing handle, and isolating opening / closing handle on the circuit breaker body. This ensures that the protective mechanism does not interfere with the operation of the circuit breaker body by personnel located on the ground.

[0014] 3. This type of primary and secondary integrated pole-mounted circuit breaker with protective function can use a hook to pull a long bolt downwards. The long bolt and the pull column work together to move the top cover, second piston rod, second piston block, first piston rod, and first piston block downwards. The second piston block guides the gas inside the second piston cylinder through the fourth one-way valve into the second air blowing pipe, causing the gas inside the second air blowing pipe to be blown onto the circuit breaker body through the second air blowing hole, thus cleaning one side of the circuit breaker body. The downward movement of the first piston block causes the first one-way valve to introduce external air into the inner cavity of the first piston cylinder. When the hook is released, the restoring elastic band of the first spring... The top cover, second piston rod, second piston block, first piston rod, and first piston block move upwards. The first piston block guides the gas in the inner cavity of the first piston cylinder through the second one-way valve and the air guide steel pipe into the first air blowing pipe. The gas in the first air blowing pipe is then blown out through the first air blowing hole to clean the other side of the circuit breaker body. The upward movement of the second piston block causes the third one-way valve to guide external air into the inner cavity of the second piston cylinder for storage. This process is repeated multiple times to blow and clean the dust on the circuit breaker body. This allows workers to clean the circuit breaker body from the ground, avoiding the need for manual climbing of utility poles and providing good convenience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom-view structural diagram of the present invention; Figure 3 This is a schematic diagram of the support frame of the present invention; Figure 4 This is a schematic diagram of the top cover of the present invention; Figure 5 This is a schematic diagram showing the disassembled first air blowing mechanism, second air blowing mechanism, and protective mechanism of the present invention; Figure 6 This is a schematic diagram of the mounting bracket of the present invention; Figure 7 This is a cross-sectional schematic diagram of the fixing box of the present invention; Figure 8 This is a schematic diagram of the structure of the second air blowing mechanism of the present invention; Figure 9 This is a cross-sectional schematic diagram of the second air blowing mechanism of the present invention; Figure 10 This is a schematic diagram of the structure of the first air blowing mechanism of the present invention; Figure 11 This is a cross-sectional schematic diagram of the first air blowing mechanism of the present invention; Figure 12 The structure of this invention Figure 6 Enlarged diagram of point A in the diagram.

[0016] In the diagram: 1. Circuit breaker body; 2. Support frame; 3. Protective mechanism; 4. First air blowing mechanism; 5. Second air blowing mechanism; 6. Fixing mechanism; 7. Mounting bracket; 8. Outer telescopic cylinder; 9. First spring; 10. Top cover; 11. Inner telescopic cylinder; 12. Vent hole; 13. Tie column; 14. Through hole; 15. Long bolt; 16. Second nut; 17. Protective rod; 18. Hanger; 19. Fixing box; 20. Second spring; 21. Movable block; 22. Fixing plate; 23. Guide slope; 24. Arc-shaped groove; 25. Tie rod; 26. Limiting post; 27. Pull ring; 28. First piston cylinder; 29. ​​First piston block; 30. First piston rod; 31. Vent; 32. First check valve; 33. Second check valve; 34. Air guide pipe; 35. First air blowing pipe; 36. First air blowing hole; 37. Second piston cylinder; 38. Second piston block; 39. Second piston rod; 40. Third check valve; 41. Fourth check valve; 42. Second air blowing pipe; 43. Second air blowing hole; 44. Sliding hole; 45. Mounting hole; 46. Stud; 47. First nut. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] Please see Figures 1 to 12 This invention provides a technical solution: a primary and secondary integrated pole-mounted circuit breaker with protective function, comprising a circuit breaker body 1. The circuit breaker body 1 is composed of a stainless steel shell, a vacuum tube rainproof cap, an upper outgoing line, an upper insulating cylinder, a lower insulating cylinder, a grounding screw, an opening / closing nameplate, an opening / closing indicator needle, an energy storage handle, an energy storage nameplate, an opening / closing handle, an isolation interlock, an isolation frame, an isolation opening / closing handle, a post insulator, a knife holder, an isolation blade, a current transformer, and an isolation tie rod, etc. The stainless steel shell of the circuit breaker body 1 is mounted on an angle steel frame on a utility pole. This is existing technology. Support frames 2 are fixedly connected to both sides of the circuit breaker body 1. The two support frames 2 are welded to the two isolation frames on the circuit breaker body 1. Reinforcing ribs can also be welded to ensure its support strength. Sliding holes 44 are provided on the two support frames 2. Mounting frames 7 are installed on the two support frames 2. Protective mechanisms 3 are provided on the two mounting frames 7. A first air blowing mechanism 4 is provided between the protective mechanism 3 and the mounting frame 7. A second air blowing mechanism 5 is provided between the protective mechanism 3 and the mounting frame 7. A fixing mechanism 6 is provided at the bottom of the circuit breaker body 1. Multiple mounting holes 45 are provided on each support frame 2.

[0019] The protective mechanism 3 includes two sets of outer telescopic cylinders 8 and two sets of first springs 9, which are respectively fixedly connected to two mounting brackets 7. The first springs 9 are placed inside the outer telescopic cylinders 8 and the inner telescopic cylinders 11. The top of each set of first springs 9 is fixedly connected to a top cover 10. The elastic force of the four first springs 9 can drive the top cover 10 and the protective rod 17 to move upward, and at the same time, can pull the second piston rod 39 and the first piston rod 30 upward respectively. The elastic force and model of the first springs 9 can be selected according to the actual production situation. The bottom surface of the top cover 10 is fixedly connected to two sets of inner telescopic cylinders 11. The bottom ends of the two sets of inner telescopic cylinders 11 are respectively movably sleeved into the inner cavity of the two sets of outer telescopic cylinders 8. The side of the inner telescopic cylinder 11 is in contact with the inner wall of the outer telescopic cylinder 8 to ensure that the inner telescopic cylinder 11... 1. The stability of the expansion and contraction of the inner cavity of the outer telescopic cylinder 8 is ensured, thereby guaranteeing the stability of the vertical movement of the top cover 10 and the guard rod 17. Multiple guard rods 17 are placed on the outside of the circuit breaker body 1. The top cover 10 and the guard rods 17 can be made of lightweight materials. A vent hole 12 is provided on the bottom surface of the mounting frame 7 and directly below the outer telescopic cylinder 8. Multiple guard rods 17 are provided on the side of the bottom surface of the top cover 10. Two pull columns 13 are fixedly connected to the bottom surface of the top cover 10. The two pull columns 13 are movably sleeved to the bottom of the mounting frame 7 and have through holes 14. The pull columns 13 penetrate the inner cavity of the sliding hole 44. The outer diameter of the pull column 13 is equal to the inner diameter of the sliding hole 44. Long bolts 15 are sleeved in the inner cavity of the two through holes 14. The end of the long bolts 15 is threaded with a second nut 16.

[0020] Two hangers 18 are fixedly connected to the bottom of the circuit breaker body 1. The two hangers 18 are welded to the bottom of the two isolation frames on the circuit breaker body 1. A fixed box 19 is fixedly connected to the bottom of the two hangers 18. Multiple second springs 20 are fixedly connected to the inner wall of the fixed box 19. Movable blocks 21 are fixedly connected to the ends of the multiple second springs 20. One end of the movable block 21 extends to the outside of the fixed box 19 and is fixedly connected to a fixed plate 22. A guide slope 23 is provided at the top of the fixed plate 22. An arc-shaped groove 24 is provided at the bottom of the fixed plate 22. A long bolt 15 is sleeved in the inner cavity of the arc-shaped groove 24. A pull rod 25 is fixedly connected to the other end of the movable block 21. The end of the pull rod 25 is movably sleeved to the outside of the fixed box 19 and is fixedly connected to a limit post 26. A pull ring 27 is fixedly connected to one end of the limit post 26.

[0021] The first air blowing mechanism 4 includes a first piston cylinder 28 fixedly connected to the top surface of a mounting bracket 7 and a first piston rod 30 fixedly connected to the bottom surface of a top cover 10. The bottom end of the first piston rod 30 is movably sleeved into the inner cavity of the first piston cylinder 28 and fixedly connected to a first piston block 29. A sealing ring is provided between the side of the first piston rod 30 and the top end of the first piston cylinder 28 to ensure sliding sealing between the first piston rod 30 and the first piston cylinder 28. This is conventional technology and will not be elaborated further. The side of the first piston block 29 fits against the inner wall of the first piston cylinder 28. Two air vents 3 are provided on the side of the bottom end of the first piston cylinder 28. 1. A first one-way valve 32 is fixedly sleeved on the outer side of the top end of the first piston cylinder 28. The first one-way valve 32 can only allow external air to enter the inner cavity of the first piston cylinder 28. In addition, a filter screen can be installed at the end of the first one-way valve 32 to prevent dust from entering. A second one-way valve 33 is fixedly sleeved on the inner side of the top end of the first piston cylinder 28. A guide steel pipe 34 is fixedly connected to the end of the second one-way valve 33. The second one-way valve 33 can only allow air from the inner cavity of the first piston cylinder 28 to enter the guide steel pipe 34. A first air blowing pipe 35 is fixedly connected to the bottom end of the guide steel pipe 34. A plurality of first air blowing holes 36 are provided on the side of the first air blowing pipe 35.

[0022] The second air blowing mechanism 5 includes a second piston cylinder 37 fixedly connected to the top surface of another mounting bracket 7 and a second piston rod 39 fixedly connected to the bottom surface of the top cover 10. The bottom end of the second piston rod 39 is movably sleeved into the inner cavity of the second piston cylinder 37 and fixedly connected to a second piston block 38. The side of the second piston block 38 is in contact with the inner wall of the second piston cylinder 37. Both the second piston block 38 and the first piston block 29 are supported by rubber. The first piston cylinder 28, the first piston rod 30, the second piston cylinder 37, and the second piston rod 39 can be made of plastic. A third one-way valve 40 is fixedly sleeved on the outer side of the bottom end of the second piston cylinder 37. The first air inlet 36 can only allow external air to enter the inner cavity of the second piston cylinder 37. In addition, the end of the third one-way valve 40 can be equipped with a filter screen to prevent dust from entering. The inner side of the bottom end of the second piston cylinder 37 is fixedly sleeved with a fourth one-way valve 41. The end of the fourth one-way valve 41 is fixedly sleeved with a second air blowing pipe 42. The fourth one-way valve 41 can only allow air from the inner cavity of the second piston cylinder 37 to enter the inner cavity of the second air blowing pipe 42. The side of the second air blowing pipe 42 is provided with multiple second air blowing holes 43. The multiple second air blowing holes 43 and multiple first air blowing holes 36 are arranged in multiple groups in the extension direction so as to blow away the dust on the insulators on the circuit breaker body 1 from different directions.

[0023] The bottom surface of the mounting bracket 7 is fixedly connected with multiple studs 46. The bottom ends of the studs 46 extend through the mounting holes 45 to the bottom of the support frame 2 and are threaded with a first nut 47. The outer diameter of the studs 46 is equal to the inner diameter of the mounting holes 45, ensuring the stability of the studs 46 inserted into the mounting holes 45, thereby ensuring the stability of the mounting bracket 7 installed on the support frame 2.

[0024] The outer diameter of the long bolt 15 is equal to the inner diameter of the through hole 14 and the arc-shaped groove 24, respectively, to ensure the stability of the long bolt 15 when it is fitted into the inner cavity of the through hole 14, and at the same time to ensure the stability of the long bolt 15 when it is fitted into the inner side of the arc-shaped groove 24.

[0025] The side of the movable block 21 is in contact with the inner wall of the fixed box 19 to ensure the stability of the movable block 21 during its extension and retraction within the cavity of the fixed box 19. The other end of the limiting post 26 is in contact with the outer side of the fixed box 19. The limiting post 26 is used to limit the position of the pull rod 25, the movable block 21 and the fixed plate 22. This ensures that when the end face of the limiting post 26 contacts the outer side of the fixed box 19, the position of the long bolt 15 is vertically aligned with the arc-shaped groove 24, ensuring that the long bolt 15 can be inserted into the inner side of the arc-shaped groove 24.

[0026] In summary, this type of pole-mounted circuit breaker with integrated primary and secondary protection function is used by first mounting the circuit breaker body 1 onto a bracket on a utility pole using the support feet and bolts below the circuit breaker body 1. The circuit is then connected to the upper outlet terminal block and knife block on the circuit breaker body 1, along with the grounding wire, completing the circuit connection of the circuit breaker body 1. Next, two mounting brackets 7 are placed on the two support brackets 2 on the sides of the circuit breaker body 1, with the top cover 10 positioned on top of the circuit breaker body 1. Simultaneously, the studs 46 on the mounting brackets 7 are inserted into the mounting holes 45, and the first... A nut 47 is used to fix the mounting bracket 7 to the support bracket 2, while the bottom end of the pull column 13 under the top cover 10 passes through the inner cavity of the sliding hole 44. At this time, a long bolt 15 is inserted into the two through holes 14 at the bottom ends of the two pull columns 13, and a second nut 16 is installed on the end of the long bolt 15 for fixation. Then, the worker hooks the long bolt 15 with a pull hook and pulls it downwards. The long bolt 15 and the pull column 13 drive the top cover 10 and the protective rod 17 to move downwards, so that the protective rod 17 is placed on the side of the circuit breaker body 1, thereby protecting the side of the circuit breaker body 1. At the same time, the mounting bracket 7 and the top cover 10 are connected. When the first spring 9 is compressed, as the long bolt 15 moves downward, it first contacts the guide slope 23 on the fixed plate 22. The long bolt 15 pushes the fixed plate 22 and the movable block 21 to move laterally against the elastic force of the second spring 20. When the long bolt 15 moves below the fixed plate 22, the restoring elastic force of the second spring 20 drives the fixed plate 22 and the movable block 21 to reset. The movement of the movable block 21 and the fixed plate 22 is limited by the limiting post 26. At this time, the long bolt 15 is placed in the inner cavity of the arc-shaped groove 24 to fix the position of the top cover 10 and the protective rod 17. Finally, when operating the energy storage handle, opening and closing handle, and isolating opening and closing handle on the circuit breaker body 1, first use the hook to hook the pull ring 27 and pull the pull ring 27. Use the pull ring 27 to drive the limit post 26, pull rod 25, movable block 21 and fixing plate 22 to move laterally, thereby releasing the fixing plate 22 from fixing the long bolt 15. At this time, use the restoring force of the first spring 9 to drive the top cover 10 and the protective rod 17 to move upward, so that the protective rod 17 no longer protects the side of the circuit breaker body 1, so that the energy storage handle, opening and closing handle and isolating opening and closing handle on the circuit breaker body 1 can be operated. Additionally, when cleaning dust from the surfaces of the upper and lower insulating cylinders and post insulators on the circuit breaker body 1, the long bolt 15 can be pulled downwards using the hook. The long bolt 15 and the pull column 13 work together to move the top cover 10 downwards. At this time, the top cover 10 moves the second piston rod 39, the second piston block 38, the first piston rod 30, and the first piston block 29 downwards. The second piston block 38 guides the gas from the inner cavity of the second piston cylinder 37 through the fourth one-way valve 41 into the second air blowing pipe 42, causing the gas in the inner cavity of the second air blowing pipe 42 to be blown onto the circuit breaker body 1 through the second air blowing hole 43, thus cleaning one side of the circuit breaker body 1. The downward movement of the first piston block 29 causes the first one-way valve 32 to draw external air into the inner cavity of the first piston cylinder 28. When the hook releases its pull on the long bolt 15, the first spring... The restoring elasticity of piston 9 causes the top cover 10 to move upward. At this time, the top cover 10 simultaneously causes the second piston rod 39, the second piston block 38, the first piston rod 30, and the first piston block 29 to move upward. The first piston block 29 uses the gas in the inner cavity of the first piston cylinder 28 to be introduced from the second one-way valve 33 and the air guide steel pipe 34 into the first air blowing pipe 35. The gas in the first air blowing pipe 35 is then blown out through the first air blowing hole 36 to blow and clean the other side of the circuit breaker body 1. The upward movement of the second piston block 38 causes the third one-way valve 40 to introduce external air into the inner cavity of the second piston cylinder 37 for storage. This process is repeated multiple times to blow and clean the dust on the circuit breaker body 1. After the operation is completed, the long bolt 15 can be pulled down to the bottom again and fixed with the fixing plate 22 so that the protective rod 17 can be moved back to the side of the circuit breaker body 1.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A primary and secondary integrated pole-mounted circuit breaker with protective function, characterized in that: The circuit breaker body (1) is fixedly connected to two sides of the circuit breaker body (1). The two support frames (2) are respectively provided with sliding holes (44). The two support frames (2) are respectively installed with mounting brackets (7). The two mounting brackets (7) are provided with protective mechanisms (3). A first air blowing mechanism (4) is provided between the protective mechanism (3) and the mounting bracket (7). A second air blowing mechanism (5) is provided between the protective mechanism (3) and the mounting bracket (7). A fixing mechanism (6) is provided below the circuit breaker body (1). The support frames (2) are provided with multiple mounting holes (45).

2. The primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 1, characterized in that: The protective mechanism (3) includes two sets of outer telescopic cylinders (8) and two sets of first springs (9) respectively fixedly connected to two mounting brackets (7). The top of each set of first springs (9) is fixedly connected to a top cover (10). The bottom surface of the top cover (10) is fixedly connected to two sets of inner telescopic cylinders (11). The bottom ends of the two sets of inner telescopic cylinders (11) are respectively movably sleeved into the inner cavity of the two sets of outer telescopic cylinders (8). The side of the inner telescopic cylinder (11) is in contact with the inner wall of the outer telescopic cylinder (8). The bottom surface of the mounting bracket (7) is located at... A vent (12) is provided directly below the outer telescopic cylinder (8). Multiple protective rods (17) are provided on the side of the bottom surface of the top cover (10). Two pull columns (13) are fixedly connected to the bottom surface of the top cover (10). The two pull columns (13) are respectively movably sleeved to the bottom of the mounting bracket (7) and have through holes (14). The pull columns (13) penetrate the inner cavity of the sliding hole (44). Long bolts (15) are sleeved in the inner cavity of the two through holes (14). The end of the long bolts (15) is threaded with a second nut (16).

3. A primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 2, characterized in that: Two hangers (18) are fixedly connected to the bottom of the circuit breaker body (1). A fixed box (19) is fixedly connected to the bottom of the two hangers (18). Multiple second springs (20) are fixedly connected to the inner wall of the fixed box (19). Movable blocks (21) are fixedly connected to the ends of the multiple second springs (20). One end of the movable block (21) extends to the outside of the fixed box (19) and is fixedly connected to a fixed plate (22). A guide slope (23) is provided at the top of the fixed plate (22). An arc-shaped groove (24) is provided at the bottom of the fixed plate (22). A long bolt (15) is sleeved in the inner cavity of the arc-shaped groove (24). A pull rod (25) is fixedly connected to the other end of the movable block (21). The end of the pull rod (25) is movably sleeved to the outside of the fixed box (19) and is fixedly connected to a limit post (26). A pull ring (27) is fixedly connected to one end of the limit post (26).

4. A primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 1, characterized in that: The first air blowing mechanism (4) includes a first piston cylinder (28) fixedly connected to the top surface of a mounting bracket (7) and a first piston rod (30) fixedly connected to the bottom surface of a top cover (10). The bottom end of the first piston rod (30) is movably sleeved into the inner cavity of the first piston cylinder (28) and fixedly connected to a first piston block (29). The side of the first piston block (29) is in contact with the inner wall of the first piston cylinder (28). Two air vents (31) are provided on the side of the bottom end of the first piston cylinder (28). A first one-way valve (32) is fixedly sleeved on the outer side of the top end of the first piston cylinder (28). A second one-way valve (33) is fixedly sleeved on the inner side of the top end of the first piston cylinder (28). A guide steel pipe (34) is fixedly connected to the end of the second one-way valve (33). A first air blowing pipe (35) is fixedly connected to the bottom end of the guide steel pipe (34). A plurality of first air blowing holes (36) are provided on the side of the first air blowing pipe (35).

5. A primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 1, characterized in that: The second air blowing mechanism (5) includes a second piston cylinder (37) fixedly connected to the top surface of another mounting bracket (7) and a second piston rod (39) fixedly connected to the bottom surface of the top cover (10). The bottom end of the second piston rod (39) is movably sleeved into the inner cavity of the second piston cylinder (37) and fixedly connected to a second piston block (38). The side of the second piston block (38) is in contact with the inner wall of the second piston cylinder (37). A third one-way valve (40) is fixedly sleeved on the outer side of the bottom end of the second piston cylinder (37). A fourth one-way valve (41) is fixedly sleeved on the inner side of the bottom end of the second piston cylinder (37). A second air blowing pipe (42) is fixedly sleeved at the end of the fourth one-way valve (41). A plurality of second air blowing holes (43) are provided on the side of the second air blowing pipe (42).

6. A primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 1, characterized in that: The bottom surface of the mounting bracket (7) is fixedly connected with multiple studs (46), and the bottom ends of the multiple studs (46) extend through the mounting holes (45) to the bottom of the support frame (2) and are threaded with a first nut (47).

7. A primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 3, characterized in that: The outer diameter of the long bolt (15) is equal to the inner diameter of the through hole (14) and the arc-shaped groove (24).

8. A primary and secondary integrated pole-mounted circuit breaker with protective function according to claim 3, characterized in that: The side of the movable block (21) is in contact with the inner wall of the fixed box (19), and the other end of the limiting post (26) is in contact with the outer side of the fixed box (19).

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