A circuit breaker spring dismounting device

Abstract

The utility model relates to circuit breaker parts technical field discloses a kind of circuit breaker spring dismounting device, including energy storage block, energy storage block is symmetrically arranged, and spring is fixedly connected between energy storage block;Dismounting assembly, dismounting assembly is arranged between energy storage block, and dismounting assembly is used to dismounting energy storage block, spring, and dismounting assembly includes limiting block, abutment rod, first movable block, second movable block, screw rod, limiting block is oppositely arranged with corresponding energy storage block, and abutment rod is symmetrically arranged on each limiting block, first movable block is threadedly connected with screw rod, screw rod is rotatably connected with second movable block, limiting block drives abutment rod and the bottom of energy storage block contact, and continuously expand, until energy storage block and spring are tight, each energy storage block is limited by the symmetric limiting block, abutment rod setting, to realize stability to energy storage block, spring is disassembled and assembled, and the device is easy to operate, without excessive adjustment.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit breaker components, specifically, it relates to a circuit breaker spring disassembly and assembly device. Background Technology

[0002] High-voltage circuit breakers, also known as high-voltage switches, can not only cut off or close the no-load current and load current in high-voltage circuits, but also cut off overload current and short-circuit current through the action of relay protection devices when a system fault occurs. They have a fairly complete arc-extinguishing structure and sufficient breaking capacity, and can be divided into: oil circuit breakers, multi-oil circuit breakers, low-oil circuit breakers, sulfur hexafluoride circuit breakers (SF6 circuit breakers), compressed air circuit breakers, vacuum circuit breakers, etc.

[0003] To ensure that high-voltage circuit breakers can operate normally during power system operation, they are regularly inspected. During the inspection, it was found that some high-voltage circuit breakers have problems such as stress relaxation and surface defects in their energy storage springs, which require replacement. In particular, the maintenance of 12kV high-voltage circuit breakers (VS1-12) involves disassembling and assembling the chassis and energy storage motor.

[0004] A document with publication number (CN203221460U) discloses a tool for disassembling and assembling energy storage springs in high-voltage circuit breakers. The tool is characterized by a support base equipped with an energy storage spring lifting device. Due to the adoption of this technical solution, the utility model features a high safety factor, eliminating safety hazards during operation; simple manufacturing and assembly, making it easy to carry; natural and stable stretching of the energy storage spring, resulting in better stability, eliminating uneven stress, and preventing damage to the spring; reduced workload, shortened operation time, and improved work efficiency.

[0005] In actual use, the energy storage spring of the above-mentioned device needs to be fixed with the disassembly tool through the handle, pin hole and pin in disassembly and installation, which is cumbersome. Moreover, the energy storage spring in the tension state is only limited at the upper end, while the bottom is in a movable state, which can easily cause safety hazards.

[0006] In view of this, this utility model is proposed. Utility Model Content

[0007] To solve the technical problem of spring loading and unloading, the basic concept of the technical solution adopted by this utility model is as follows: A circuit breaker spring disassembly and assembly device includes energy storage blocks symmetrically arranged and springs fixedly connected between the energy storage blocks; and a disassembly and assembly assembly disposed between the energy storage blocks and used to disassemble and assemble the energy storage blocks and springs. The disassembly and assembly assembly includes a limiting block, a contact rod, a first movable block, a second movable block, and a lead screw. The limiting blocks are arranged opposite to the corresponding energy storage blocks, and the contact rods are symmetrically arranged on each limiting block. The first movable block is threadedly connected to the lead screw, and the lead screw is rotatably connected to the second movable block. The first movable block and the second movable block are respectively driven by the corresponding limiting blocks.

[0008] In a preferred embodiment of this utility model, a telescopic rod is provided between the symmetrical abutment rods. The telescopic rod consists of a sliding sleeve and two sliding rods. The two ends of the sliding rods are slidably connected to the sliding sleeve, and the corresponding sliding rods are fixedly connected to the abutment rods.

[0009] In a preferred embodiment of this utility model, the ends of the abutment rod and the telescopic rod are slidably connected to the limiting block, and a rope is sleeved between the telescopic rods, with the ends of the ropes being restricted and connected to the same rope buckle.

[0010] In a preferred embodiment of the present invention, first connecting blocks are symmetrically arranged on the first movable block, each first connecting block is fixedly connected to the first movable block, and each first connecting block is rotatably connected to a first connecting rod.

[0011] In a preferred embodiment of the present invention, each of the first connecting rods is rotatably connected to a second connecting block, and each second connecting block is fixedly connected to a corresponding limiting block.

[0012] In a preferred embodiment of the present invention, the second movable block is symmetrically provided with third connecting blocks, each third connecting block is fixedly connected to the second movable block, and each third connecting block is rotatably connected to a second connecting rod.

[0013] In a preferred embodiment of the present invention, each of the second connecting rods is rotatably connected to a fourth connecting block, and each fourth connecting block is fixedly connected to a corresponding limiting block.

[0014] In a preferred embodiment of this utility model, the corresponding first link and the second link are arranged crosswise, and the crosswise positions of the corresponding first link and the second link are connected by a pivot.

[0015] In a preferred embodiment of this utility model, elastic ropes are fixedly connected to both the first movable block and the second movable block, and each elastic rope is fixedly connected to a hook block, with each hook block hooking onto a corresponding position on the spring.

[0016] Compared with the prior art, the present invention has the following advantages: 1. A circuit breaker spring disassembly and assembly device, wherein the limiting block drives the abutment rod to contact the bottom of the energy storage block and continuously expands until the energy storage block and the spring are taut. By setting symmetrical limiting blocks and abutment rods, each energy storage block is restricted, thereby achieving stability during the assembly and disassembly of the energy storage block and the spring. Moreover, this device is easy to operate and does not require much adjustment.

[0017] 2. This circuit breaker spring disassembly and assembly device moves and adjusts the position of the abutment rod to a position suitable for the size of the energy storage block, thereby adapting to different energy storage blocks. After the abutment rod abuts against the energy storage block, the position of the telescopic rod is fixed. By tightening the rope, the position of the telescopic rod and the abutment rod is fixed, ensuring stability during construction and preventing the abutment rod from detaching from the energy storage block. During the contraction and expansion process, the sliding rod and sliding sleeve composed of the telescopic rod contract, thereby avoiding motion interference during the contraction and expansion of the limiting block and the abutment rod.

[0018] 3. In this circuit breaker spring disassembly and assembly device, the elastic rope applies a lateral force to the hook block during pulling, and the hook block applies the force to the spring, thereby ensuring that the connection between the device and the spring is uninterrupted during operation. Through this pulling force, the position of the energy storage block and the spring is restricted, preventing the energy storage block and the spring from falling off under the action of elastic potential energy and posing a threat to the surrounding workers.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram: Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the limiting block and the movable block of this utility model; Figure 3 This is a schematic diagram of the structure on the limiting block of this utility model; Figure 4 This is a schematic diagram of the structure between the movable blocks of this utility model; Figure 5 This is a schematic diagram of the hook block structure of this utility model.

[0021] In the diagram: 1. Energy storage block; 11. Spring; 2. Limiting block; 21. Abutment rod; 22. Telescopic rod; 23. Rope; 24. Rope buckle; 3. First movable block; 31. Second movable block; 32. Lead screw; 33. First connecting block; 34. First connecting rod; 35. Second connecting block; 36. Third connecting block; 37. Second connecting rod; 38. Fourth connecting block; 4. Hook block; 41. Elastic rope. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0023] Please see Figure 1-5 A circuit breaker spring disassembly and assembly device includes energy storage blocks 1, which are symmetrically arranged and springs 11 are fixedly connected between them; and disassembly and assembly components, which are arranged between the energy storage blocks 1 and are used to disassemble and assemble the energy storage blocks 1 and springs 11. The disassembly and assembly components include limiting blocks 2, abutting rods 21, first movable blocks 3, second movable blocks 31, and lead screws 32. The limiting blocks 2 are arranged opposite to the corresponding energy storage blocks 1, and the abutting rods 21 are symmetrically arranged on each limiting block 2. The first movable block 3 is threadedly connected to the lead screw 32, and the lead screw 32 is rotatably connected to the second movable block 31. The first movable block 3 and the second movable block 31 are respectively driven by the corresponding limiting blocks 2. Before use, the limiting block 2 is first retracted by the first movable block 3, the second movable block 31 and the lead screw 32. Then, the limiting block 2 and the abutment rod 21 are placed between the energy storage blocks 1. After adjusting the position of the abutment rod 21 to a suitable position, the first movable block 3 and the second movable block 31 are retracted through the threaded transmission of the lead screw 32. The limiting block 2 is then expanded outward. The limiting block 2 drives the abutment rod 21 to contact the bottom of the energy storage block 1 and continues to expand until the energy storage block 1 and the spring 11 are taut. The symmetrical setting of the limiting block 2 and the abutment rod 21 restricts each energy storage block 1, thereby achieving stability during the loading and unloading of the energy storage block 1 and the spring 11. Moreover, this device is easy to operate and does not require much adjustment.

[0024] Among them, a telescopic rod 22 is provided between the symmetrical abutment rods 21. The telescopic rod 22 is composed of a sliding sleeve and two sliding rods. The two ends of the sliding rods are slidably connected to the sliding sleeve, and the corresponding sliding rods are fixedly connected to the abutment rods 21. The ends of the abutment rods 21 and the telescopic rods 22 are slidably connected to the limiting block 2. A rope 23 is sleeved between the telescopic rods 22, and the ends of the rope 23 are limited by the same rope buckle 24. Before use, the rope 23 and rope buckle 24 are manually released. The rope 23 is then tightened or loosened to change the distance between the telescopic rods 22, thereby moving and adjusting the position of the abutment rod 21 to a position suitable for the size of the energy storage block 1. This allows for adaptation to different energy storage blocks 1. After the abutment rod 21 abuts against the energy storage block 1, the position of the telescopic rod 22 is fixed. Tightening the rope 23 fixes the positions of the telescopic rod 22 and the abutment rod 21, ensuring stability during construction and preventing the abutment rod 21 from detaching from the energy storage block 1. The distance between the limiting blocks 2 is changed to achieve contraction and expansion. During this process, the sliding rod and sliding sleeve composed of the telescopic rods 22 contract, thus avoiding motion interference during the contraction and expansion of the limiting blocks 2 and the abutment rod 21. It is worth noting that the rope buckle 24 has a longitudinally formed chamber inside the female buckle that houses the male buckle. Multiple through holes are transversely formed around the periphery of the female buckle. A protruding buckle is provided on the inner wall of the chamber adjacent to the opening, positioned between two adjacent through holes. The base of the male buckle has transversely formed channels aligned with the through holes for rope threading. A buckle hole is recessed between the two channels to hold the protruding buckle. An elastic element is positioned between the female and male buckles, allowing the female buckle to be elastically supported against the male buckle. The channel and the hole are misaligned to clamp onto the rope. This type of rope buckle is circular in shape, and the positioning function is enhanced by the interlocking structure of the protruding buckle and the buckle hole when the male and female buckles are assembled. Therefore, the male buckle will not rotate when it is pressed. This not only makes it easy to thread the rope, but also prevents the rope from twisting and deforming due to the rotation of the male buckle. It also reduces the wear of the rope and makes it more durable. The rope buckle 24 has been disclosed in the prior art rope buckle CN207995990U, and will not be described in detail here. It should be added that the shapes in the above-mentioned referenced technologies need to be changed according to the shapes in this application, and should be symmetrically arranged.

[0025] The first movable block 3 is symmetrically provided with first connecting blocks 33, each first connecting block 33 is fixedly connected to the first movable block 3, and each first connecting block 33 is rotatably connected to a first connecting rod 34. Each first connecting rod 34 is rotatably connected to a second connecting block 35, and each second connecting block 35 is fixedly connected to a corresponding limiting block 2. The second movable block 31 is symmetrically provided with third connecting blocks 36, each third connecting block 36 is fixedly connected to the second movable block 31, and each third connecting block 36 is rotatably connected to a second connecting rod 37. Each second connecting rod 37 is rotatably connected to a fourth connecting block 38, and each fourth connecting block 38 is fixedly connected to a corresponding limiting block 2. The corresponding first connecting rods 34 and second connecting rods 37 are arranged crosswise, and the crosswise positions of the corresponding first connecting rods 34 and second connecting rods 37 are connected by a pivot. Before disassembly and assembly, manually rotate the lead screw 32. The lead screw 32 rotates with the second movable block 31, and the lead screw 32 is threadedly driven with the first movable block 3, thereby increasing the distance between the first movable block 3 and the second movable block 31. Through the scissor structure formed by the first connecting rod 34, the second connecting rod 37 and related components, the distance between the limiting blocks 2 is reduced. After the limiting blocks 2 are placed between the energy storage blocks 1, and the position of the abutment rod 21 is adjusted, manually rotate the lead screw 32 in the opposite direction. The lead screw 32, through the threaded drive, increases the distance between the first movable block 3 and the second movable block 31. The distance between the moving block 3 and the second moving block 31 decreases, thereby increasing the distance between the limiting blocks 2. The limiting blocks 2 drive the abutment rod 21 to contact the energy storage block 1 and push the energy storage block 1 towards each other, thereby deforming the spring 11. The spring 11 pulls the energy storage block 1 inward through the force of deformation, and the energy storage block 1 is restricted on the abutment rod 21, thereby maintaining stability. Then, the energy storage block 1 and the spring 11 are supported and kept stable with the help of this device. The energy storage block 1 and the corresponding position of the circuit breaker are disassembled and assembled. Furthermore, at the intersection of the first link 34 and the second link 37, the overall length of the first link 34 and the second link 37 is biased towards the side of the limiting block 2. Thus, in the scissor drive, the displacement transmission coefficient between the first movable block 3 and the second movable block 31 is increased, and the force on the limiting block 2 is enhanced. Stability is ensured by the self-locking characteristic of the lead screw 32.

[0026] Among them, the first movable block 3 and the second movable block 31 are both fixedly connected with elastic ropes 41, each elastic rope 41 is fixedly connected with a hook block 4, and each hook block 4 is hooked to the corresponding position on the spring 11. After the abutment rod 21 is installed, the hook block 4 is hooked to the corresponding position on the spring 11. During the process of the first movable block 3 contracting and the restricting block 2 expanding, the first movable block 3 and the second movable block 31 gradually move away from the restricting block 2. The elastic rope 41 is pulled away from the spring 11 by the first movable block 3 and the second movable block 31. The elastic rope 41 applies a lateral force to the hook block 4 during the pull, and the hook block 4 applies the force to the spring 11. This ensures that the connection between the device and the spring 11 is uninterrupted during operation. Through this pulling force, the position of the energy storage block 1 and the spring 11 is restricted, preventing the energy storage block 1 and the spring 11 from falling off under the action of elastic potential energy and posing a threat to the surrounding workers.

[0027] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A circuit breaker spring disassembly and assembly device, characterized in that, include: Energy storage blocks (1) are arranged symmetrically, and springs (11) are fixedly connected between the energy storage blocks (1). The disassembly and assembly assembly is set between the energy storage blocks (1) and is used to disassemble and assemble the energy storage blocks (1) and the spring (11). The disassembly and assembly assembly includes a limiting block (2), an abutment rod (21), a first movable block (3), a second movable block (31), and a lead screw (32). The limiting block (2) is set opposite to the corresponding energy storage block (1), and the abutment rod (21) is symmetrically set on each limiting block (2). The first movable block (3) is threadedly connected to the lead screw (32), and the lead screw (32) is rotatably connected to the second movable block (31). The first movable block (3) and the second movable block (31) are respectively connected to the corresponding limiting block (2) for transmission.

2. The circuit breaker spring disassembly and assembly device according to claim 1, characterized in that, A telescopic rod (22) is provided between the symmetrical abutment rods (21). The telescopic rod (22) consists of a sliding sleeve and two sliding rods. The two ends of the sliding rods are slidably connected to the sliding sleeve, and the corresponding sliding rods are fixedly connected to the abutment rods (21).

3. The circuit breaker spring disassembly and assembly device according to claim 2, characterized in that, The ends of the abutment rod (21) and the telescopic rod (22) are slidably connected to the limiting block (2), and a rope (23) is sleeved between the telescopic rods (22), with the ends of the rope (23) being restricted and connected to the same rope buckle (24).

4. The circuit breaker spring disassembly and assembly device according to claim 1, characterized in that, The first movable block (3) is symmetrically provided with first connecting blocks (33), each first connecting block (33) is fixedly connected to the first movable block (3), and each first connecting block (33) is rotatably connected to a first connecting rod (34).

5. The circuit breaker spring disassembly and assembly device according to claim 4, characterized in that, Each of the first links (34) is rotatably connected to a second connecting block (35), and each second connecting block (35) is fixedly connected to a corresponding limiting block (2).

6. The circuit breaker spring disassembly and assembly device according to claim 1, characterized in that, The second movable block (31) is symmetrically provided with third connecting blocks (36), each third connecting block (36) is fixedly connected to the second movable block (31), and each third connecting block (36) is rotatably connected to a second connecting rod (37).

7. The circuit breaker spring disassembly and assembly device according to claim 6, characterized in that, Each of the second links (37) is rotatably connected to a fourth connecting block (38), and each fourth connecting block (38) is fixedly connected to a corresponding limiting block (2).

8. The circuit breaker spring disassembly and assembly device according to claim 7, characterized in that, The corresponding first link (34) and second link (37) are arranged to cross each other, and the corresponding first link (34) and second link (37) are connected by a pivot at the intersection.

9. The circuit breaker spring disassembly and assembly device according to claim 1, characterized in that, The first movable block (3) and the second movable block (31) are both fixedly connected with elastic ropes (41), and each elastic rope (41) is fixedly connected with a hook block (4), and each hook block (4) is hooked to the corresponding position on the spring (11).

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