A primary and secondary fused pole-mounted circuit breaker

Abstract

This utility model belongs to the field of power equipment technology, and particularly relates to a convenient primary and secondary integrated pole-mounted circuit breaker, including a base, a circuit breaker body, and three-phase poles. The circuit breaker body is placed on the base, and multiple three-phase poles are evenly distributed and fixed to the top of the circuit breaker body. Through the cooperation structure of eccentric locking blocks, rotating rods, and stepped locking slots, combined with the elastic clamping function of leaf springs, convenient and quick disassembly and assembly between the circuit breaker body and the base can be achieved. To unlock, only clockwise rotation of the rotating rod and lifting of the circuit breaker body are required; to lock, only pressing down and counterclockwise rotation of the rotating rod are required. No tools are needed throughout the process, making operation simple and significantly improving on-site maintenance efficiency. It is suitable for scenarios requiring rapid response, such as frequent maintenance and replacement.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, and in particular relates to a primary and secondary integrated pole-mounted circuit breaker that is easy to disassemble and assemble. Background Technology

[0002] With the continuous advancement of smart distribution network construction, primary and secondary integrated pole-mounted circuit breakers, as key equipment for realizing distribution automation, rapid fault isolation, and power restoration, have been widely used in 10kV overhead lines. These integrated pole-mounted circuit breakers combine a high-voltage switch body with an intelligent control terminal, possessing measurement, protection, control, and communication functions, effectively improving power supply reliability and operation and maintenance efficiency.

[0003] Currently, primary and secondary integrated pole-mounted circuit breakers generally adopt an installation mode in which the lower mounting base is fixed to the utility pole using U-shaped clamps to ensure the stability and reliability of the equipment during long-term operation. However, in the existing structural design, the mounting base and the circuit breaker body are connected as a single unit. This design means that when it is necessary to replace, repair, or return the circuit breaker to the factory for maintenance, the entire device, including the mounting base, must be removed from the utility pole. Since the mounting base is fixed to the high-altitude pole, the clamps must be loosened on the pole and the device lifted during disassembly. This operation is complex, labor-intensive, and time-consuming, and poses safety hazards such as personnel falling from height and parts falling, affecting operation and maintenance efficiency and work safety.

[0004] Therefore, it is necessary to design a primary and secondary integrated pole-mounted circuit breaker that is easy to install and disassemble in order to solve the above-mentioned technical problems. Utility Model Content

[0005] To overcome the disadvantages of the integrated primary and secondary pole-mounted circuit breaker, which has an integrated structure that requires complete disassembly for maintenance, resulting in high difficulty, high risk, and low efficiency in high-altitude operations, this utility model provides an integrated primary and secondary pole-mounted circuit breaker that is easy to disassemble and assemble.

[0006] This utility model is achieved through the following technical means: a convenient primary and secondary integrated pole-mounted circuit breaker, including a base, a circuit breaker body, and three-phase poles. The circuit breaker body is placed on the base, and multiple three-phase poles are evenly distributed and fixed to the top of the circuit breaker body. It also includes an eccentric locking block, a rotating rod, and a leaf spring. Rotating rods are slidably and rotatably installed at multiple corners of the lower part of the circuit breaker body. An eccentric locking block is fixed to one end of each rotating rod. A locking groove is opened at multiple corners of the upper part of the base. Each locking groove has a stepped structure, consisting of an upper circular groove and a lower circular groove. The upper circular groove is a vertical through hole section, and its diameter matches the diameter of the eccentric locking block. The lower circular groove is larger than the upper circular groove and extends into an arc-shaped area in the circumferential direction. The eccentric locking block is offset from the upper circular groove of the corresponding locking groove and rotates into the arc-shaped area of ​​the lower circular groove. A leaf spring is fixed to each rotating rod, and the leaf spring is close to the circuit breaker body.

[0007] Preferably, the circuit breaker also includes positioning cylinders and locking pins. Two symmetrically distributed positioning cylinders are installed on both sides of the base, and two symmetrically distributed locking pins are installed on both sides of the lower part of the circuit breaker body. The locking pins are vertically inserted into the positioning cylinders that are aligned with them, and one end of the locking pin is provided with a guide bevel.

[0008] Preferably, the device also includes a sliding plate and a spring. A sliding plate is slidably disposed in the lower part of each positioning cylinder, and a spring is fixed between the sliding plate and the positioning cylinder. The bottom end of the locking post contacts the sliding plate in the corresponding positioning cylinder.

[0009] Preferably, the circuit breaker body also includes a fixing ring, a chain, a hook, and a connecting ring. Two horizontally distributed fixing rings are threaded on both sides of the lower part of the circuit breaker body. A chain is attached to each fixing ring, and a hook is attached to the end of each chain. Two horizontally distributed connecting rings are threaded on both sides of the base, and the hooks are engaged with the adjacent connecting rings.

[0010] Preferably, the circuit breaker also includes handles, with handles fixed to both sides of the upper part of the circuit breaker body.

[0011] As a preferred embodiment, it also includes lifting rings, with lifting rings installed at multiple corners of the top of the circuit breaker body.

[0012] Beneficial effects: 1. Through the cooperation structure of eccentric locking block, rotating rod and stepped locking groove, combined with the elastic clamping function of leaf spring, the circuit breaker body and base can be easily and quickly disassembled and assembled. When unlocking, only the rotating rod needs to be rotated clockwise and the circuit breaker body needs to be lifted. When locking, only the rod needs to be pressed down and the rotating rod needs to be rotated counterclockwise. No tools are required throughout the process. The operation is simple and significantly improves the efficiency of on-site operation and maintenance. It is suitable for scenarios that require rapid response such as frequent maintenance and replacement.

[0013] 2. By setting up positioning cylinders and locking posts, the circuit breaker body and base can be quickly and accurately positioned, improving the centering performance, avoiding misalignment during installation, ensuring uniform load transfer, and guaranteeing the reliability of the base under stress.

[0014] 3. By setting up a sliding plate and spring, rigid collisions between the locking post and the positioning cylinder can be effectively prevented, reducing the risk of structural damage. It is suitable for working conditions where it is difficult to precisely control the descent speed in high-altitude operations.

[0015] 4. The flexible connection structure consisting of a fixed ring, chain, hook and connecting ring can still limit the lateral displacement and accidental fall of the circuit breaker body after it is unlocked, preventing the circuit breaker body from falling from a height and ensuring the safety of operators and equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the base, circuit breaker body, handle, and other components of this utility model.

[0018] Figure 3 This is a partial sectional view of the base and slot components of this utility model.

[0019] Figure 4 This is a partial cross-sectional view of the positioning cylinder component of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, such as the locking post, sliding plate, and spring.

[0021] Figure 6 This is a three-dimensional structural diagram of the components of this utility model, such as the fixing ring, chain, and hook.

[0022] Figure 7 This is a three-dimensional structural diagram of the chain, hook, and connecting ring components of this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1. Base, 101. Slot, 2. Circuit breaker body, 3. Handle, 4. Three-phase pole, 5. Lifting ring, 6. Eccentric locking block, 7. Rotary rod, 8. Leaf spring, 9. Positioning cylinder, 10. Locking post, 11. Slide plate, 12. Spring, 13. Fixing ring, 14. Chain, 15. Hook, 16. Connecting ring. Detailed Implementation

[0024] Example: A convenient primary and secondary integrated pole-mounted circuit breaker, such as... Figures 1-4 and Figure 6As shown, the circuit breaker includes a base 1, a circuit breaker body 2, handles 3, three-phase poles 4, and lifting rings 5. The circuit breaker body 2 is placed on the base 1. Handles 3 are fixedly connected to the upper left and right sides of the circuit breaker body 2. Three three-phase poles 4 are evenly distributed and fixedly connected to the top of the circuit breaker body 2. Lifting rings 5 ​​are fixed to the four corners of the top of the circuit breaker body 2 with bolts. The lifting rings 5 ​​can be used with lifting equipment to lift the circuit breaker body 2 as a whole for easy transportation. The circuit breaker also includes eccentric locking blocks 6, rotating rods 7, and leaf springs 8. Rotating rods 7 that can slide axially and rotate circumferentially are provided at the four corners of the lower part of the circuit breaker body 2. An eccentric locking block 6 is fixedly connected to the lower end of each rotating rod 7. The upper four corners of the base 1 are all open A slot 101 is provided, each slot 101 is a stepped structure, consisting of an upper circular slot and a lower circular slot. The upper circular slot is a vertical through hole section, the diameter of which matches the diameter of the eccentric locking block 6, allowing the eccentric locking block 6 to pass vertically after being rotated into position. The lower circular slot is larger than the upper circular slot and extends into an arc-shaped area in the circumferential direction. The eccentric locking block 6 is offset from the upper circular slot of the corresponding slot 101 and rotates into the arc-shaped area of ​​the lower circular slot, thereby locking the circuit breaker body 2 onto the base 1. When the eccentric locking block 6 is rotated to align with the upper circular slot of the slot 101, the eccentric locking block 6 can be disengaged from the slot 101. A leaf spring 8 is fixedly connected to each rotating rod 7, and the leaf spring 8 is close to the circuit breaker body 2.

[0025] like Figure 1 , Figure 4 and Figure 5 As shown, it also includes positioning cylinders 9 and locking pins 10. Two symmetrically distributed positioning cylinders 9 are fixed to the front and rear sides of the base 1 by bolts. Two symmetrically distributed locking pins 10 are fixed to the front and rear sides of the lower part of the circuit breaker body 2 by bolts. The locking pins 10 are vertically inserted into the positioning cylinders 9 that are aligned with them, so as to realize the rapid positioning between the circuit breaker body 2 and the base 1. The lower end of the locking pins 10 is provided with a guide bevel, which facilitates the smooth insertion of the positioning cylinders 9 during initial alignment.

[0026] like Figure 5 As shown, it also includes a slide plate 11 and a spring 12. A slide plate 11 is slidably disposed in the lower part of each positioning cylinder 9. A spring 12 is fixedly connected between the bottom of the slide plate 11 and the bottom of the positioning cylinder 9. The bottom end of the locking post 10 contacts the slide plate 11 in the corresponding positioning cylinder 9.

[0027] like Figure 6 and Figure 7As shown, it also includes a fixing ring 13, a chain 14, a hook 15, and a connecting ring 16. The lower front and rear sides of the circuit breaker body 2 are threaded with two horizontally distributed fixing rings 13. A chain 14 is hooked on each fixing ring 13, and a hook 15 is hooked at the end of each chain 14. The front and rear sides of the base 1 are threaded with two horizontally distributed connecting rings 16. The hook 15 is fastened into the adjacent connecting ring 16, and the circuit breaker body 2 and the base 1 are flexibly connected by the chain 14.

[0028] In the initial state, the eccentric block 6 is offset from the upper section of the slot 101 and moves into the arc area of ​​the lower section of the slot, thereby achieving mechanical locking of the circuit breaker body 2 on the base 1. At this time, the leaf spring 8 is in a compressed state.

[0029] When in use, the base 1 is pre-installed and fixed on the utility pole. When the circuit breaker body 2 needs to be replaced, repaired, or returned to the factory for maintenance, the staff will rotate each of the rotating rods 7 clockwise by 180 degrees in sequence, so that the eccentric block 6 rotates with the rotating rod 7 and aligns with the upper circular groove of the slot 101, thereby unlocking it. After unlocking, the rotating rod 7 is released, the leaf spring 8 returns to its original shape, and pushes the rotating rod 7 to slide upward, so that the eccentric block 6 slides into the upper circular groove of the slot 101. Then, the hook 15 on the chain 14 is removed from the connecting ring 16, and the flexible connection between the circuit breaker body 2 and the base 1 is released. At this time, the handle 3 can be held to lift the circuit breaker body 2 upward smoothly to complete the disassembly.

[0030] During installation, the circuit breaker body 2 is aligned with the base 1 and slowly lowered. Guided by the guide angle, the locking pin 10 smoothly inserts into the corresponding positioning cylinder 9, achieving rapid positioning between the circuit breaker body 2 and the base 1. The locking pin 10 continues to descend, its bottom end contacting the sliding plate 11 and pushing it downwards, compressing the spring 12 and forming an elastic insertion, effectively preventing rigid collisions between the locking pin 10 and the positioning cylinder 9. Simultaneously, the eccentric locking block 6 slides back into the upper circular groove of the locking slot 101. Once the circuit breaker body 2 is fully... After placement, press down on each rotating rod 7 to allow the eccentric block 6 to enter the lower circular groove of the slot 101. Then, rotate the rotating rod 7 counterclockwise by 180 degrees to shift the eccentric block 6 away from the upper circular groove and into the arc-shaped area of ​​the lower circular groove, completing the mechanical locking. At this time, the leaf spring 8 is in a compressed state, providing continuous clamping force to ensure that the eccentric block 6 is firmly attached to the lower circular groove, enhancing the locking stability. Finally, re-fasten the hook 15 on the chain 14 into the connecting ring 16 to establish an auxiliary connection and achieve double safety protection.

Claims

1. A convenient primary and secondary integrated pole-mounted circuit breaker, comprising a base (1), a circuit breaker body (2), and three-phase poles (4), wherein the circuit breaker body (2) is placed on the base (1), and multiple three-phase poles (4) are evenly distributed and fixed to the top of the circuit breaker body (2), characterized in that, It also includes an eccentric locking block (6), a rotating rod (7) and a leaf spring (8). The lower part of the circuit breaker body (2) is equipped with a rotating rod (7) that slides and rotates. An eccentric locking block (6) is fixed to one end of each rotating rod (7). A slot (101) is provided at the upper part of the base (1). Each slot (101) is a stepped structure, consisting of an upper circular slot and a lower circular slot. The upper circular slot is a vertical through hole section, and its diameter matches the diameter of the eccentric locking block (6). The lower circular slot is larger than the upper circular slot and extends into an arc-shaped area in the circumferential direction. The eccentric locking block (6) is offset from the upper circular slot of the corresponding slot (101) and rotates into the arc-shaped area of ​​the lower circular slot. A leaf spring (8) is fixed to each rotating rod (7) and the leaf spring (8) is close to the circuit breaker body (2).

2. The easily disassembled and reassembled primary and secondary integrated pole-mounted circuit breaker according to claim 1, characterized in that, It also includes positioning cylinders (9) and locking pins (10). Two symmetrically distributed positioning cylinders (9) are installed on both sides of the base (1). Two symmetrically distributed locking pins (10) are installed on both sides of the lower part of the circuit breaker body (2). The locking pins (10) are vertically inserted into the positioning cylinders (9) aligned with them, and one end of the locking pins (10) is provided with a guide bevel.

3. The easily detachable primary and secondary integrated pole-mounted circuit breaker according to claim 2, characterized in that, It also includes a slide plate (11) and a spring (12). The slide plate (11) is slidably arranged in the lower part of each positioning cylinder (9). The spring (12) is fixed between the slide plate (11) and the positioning cylinder (9). The bottom end of the locking post (10) is in contact with the slide plate (11) in the corresponding positioning cylinder (9).

4. The easily disassembled and reassembled primary and secondary integrated pole-mounted circuit breaker according to claim 3, characterized in that, It also includes a fixing ring (13), a chain (14), a hook (15) and a connecting ring (16). The lower sides of the circuit breaker body (2) are threaded with two horizontally distributed fixing rings (13), each fixing ring (13) is attached to a chain (14), and each chain (14) is attached to a hook (15) at the end. The base (1) is threaded with two horizontally distributed connecting rings (16) on both sides, and the hook (15) is snapped into the adjacent connecting ring (16).

5. A primary and secondary integrated pole-mounted circuit breaker that is easy to install and disassemble according to claim 4, characterized in that, It also includes handles (3), and handles (3) are fixed to both sides of the upper part of the circuit breaker body (2).

6. A primary and secondary integrated pole-mounted circuit breaker for easy assembly and disassembly according to claim 5, characterized in that, It also includes lifting rings (5), and lifting rings (5) are installed at multiple corners of the top of the circuit breaker body (2).

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