Slow pushing tool for assembling circuit breaker arc extinguish chamber

Abstract

The invention relates to the technical field of high-voltage switches in the power industry, and discloses a slow pushing tool for assembling an arc extinguish chamber of a circuit breaker, which comprises a slow pushing tool main body, a transition tool, a feeding system and a moving slide rail, the edge surface of the corresponding port is propped against the slip ring behind the nozzle; the transition tool is of a vertical bent pipe structure, the closed end of the slow pushing tool body is connected with the pipe end of an upper transverse pipe in the transition tool, the pipe end of a lower vertical pipe in the transition tool is connected with the feeding system, and the feeding system is installed on a lower movement sliding rail and can be driven by a motor to move along the movement sliding rail. Therefore, the slow-pushing tool main body is controlled to be close to or far away from the circuit breaker movable part. According to the invention, on the basis of not damaging parts of the arc extinguish chamber, safe and reliable slow separation work of the movable structure of the arc extinguish chamber is realized, the assembly efficiency of the arc extinguish chamber is improved, a circuit breaker is rapidly assembled, and the labor cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switch technology in the power industry, and more specifically, to a slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker. Background Technology

[0002] With the increasing severity of short-circuit current exceeding the standard in power grids, high-voltage switchgear faces the challenge of capacity expansion. During the development of new high-capacity circuit breakers, the increased diameter of the air cylinder necessitated optimization and improvements to the movable structure. However, this resulted in a significant increase in slow-moving resistance during arc-extinguishing chamber assembly, making manual movement difficult. Furthermore, brute force pushing or pulling of the insulating components could easily damage them, and there was a risk of damaging the nozzles during nozzle movement.

[0003] To eliminate safety hazards and improve circuit breaker assembly efficiency, it is necessary to design tooling to solve the problem of difficult assembly of the arc-extinguishing chamber of the new large-capacity circuit breaker. Summary of the Invention

[0004] In view of this, the present invention addresses the problem of low assembly efficiency of the arc-extinguishing chamber of a new high-capacity circuit breaker by proposing a slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker. The specific technical solution is as follows:

[0005] A slow-push fixture for assembling a circuit breaker arc-extinguishing chamber includes a slow-push fixture body, a transition fixture, a feeding system, and a moving slide rail. The slow-push fixture body is a tubular structure with one open end and the other closed end. The open end of the slow-push fixture body can completely surround the nozzle in the movable part of the circuit breaker, and the corresponding port edge surface abuts against the slip ring behind the nozzle. The transition fixture adopts a vertical bent pipe structure. The closed end of the slow-push fixture body is connected to the end of the upper horizontal pipe in the transition fixture. The end of the lower vertical pipe in the transition fixture is connected to the feeding system. The feeding system is installed on the moving slide rail below. The feeding system can move along the moving slide rail by a motor to control the slow-push fixture body to move closer to or away from the movable part of the circuit breaker.

[0006] Preferably, the motor speed in the feeding system is adjustable.

[0007] Preferably, the slow-push fixture body and the transition fixture are detachably connected; depending on the different models of circuit breaker products, a set of slow-push fixtures for assembling the arc-extinguishing chamber of the circuit breaker is provided with a variety of different specifications of the slow-push fixture body.

[0008] Preferably, the slow-push fixture body and the transition fixture are connected by bolts.

[0009] Preferably, the main body of the slow-push tool is made of epoxy resin insulating material.

[0010] Preferably, the motion slide rail is connected to the original arc-extinguishing chamber tooling slide rail.

[0011] Preferably, a transmission box connecting plate is installed inside the circuit breaker transmission box. The front end of the transmission box connecting plate is provided with a connecting plate pin hole. The operating rod of the movable part of the circuit breaker is located directly in front of the transmission box connecting plate, and the rear end of the operating rod is provided with an operating rod pin hole. The connecting plate pin hole and the operating rod pin hole have the same specifications and can be coaxially aligned.

[0012] Preferably, the front end of the operating lever is connected to a slip ring, and a pressure cylinder and a nozzle are connected to the slip ring; the operating lever, the pressure cylinder, the slip ring, and the nozzle together constitute the movable parts of the circuit breaker.

[0013] Preferably, the moving contact finger seat is equipped with a watch strap contact finger that locks and conducts electricity to the air cylinder.

[0014] The beneficial effects of this invention are as follows: The slow-push tool for assembling the arc-extinguishing chamber of a circuit breaker can be applied to the assembly process of arc-extinguishing chambers of circuit breakers of different voltage levels. It has a simple structure and is easy to use. Furthermore, without damaging the components of the arc-extinguishing chamber, it enables the safe and reliable slow-opening operation of the movable structure of the arc-extinguishing chamber, improves the assembly efficiency of the arc-extinguishing chamber, enables the circuit breaker to be assembled quickly, and reduces labor costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to the present invention.

[0017] Figure 2 This is a view of the appearance of the slow-push tool for assembling the arc-extinguishing chamber of a circuit breaker after installation, according to the present invention.

[0018] Figure 3 This is a cross-sectional view of the slow-push tool for assembling the arc-extinguishing chamber of a circuit breaker after installation, according to the present invention.

[0019] In the diagram: 1-Slow push fixture body, 2-Transition fixture, 3-Feed system, 4-Motion slide rail, 5-Bolt, 6-Nozzle, 7-Slip ring, 8-Pressure cylinder, 9-Operating lever, 10-Operating lever pin hole, 11-Moving contact finger seat, 12-Transmission box connecting plate, 13-Connecting plate pin hole. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Example:

[0024] This embodiment addresses the problem of low assembly efficiency of the arc-extinguishing chamber in new high-capacity circuit breakers by providing a slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker.

[0025] like Figure 1 As shown, the slow-push fixture for assembling the arc-extinguishing chamber of the circuit breaker includes a slow-push fixture body 1, a transition fixture 2, a feeding system 3, and a motion slide rail 4. The slow-push fixture body 1 is a tubular structure with one end open and the other end closed. The open end of the slow-push fixture body 1 can completely surround the nozzle 6 in the movable part of the circuit breaker, and the corresponding port edge surface abuts against the slip ring 7 behind the nozzle 6.

[0026] The transition fixture 2 adopts a vertical bend pipe structure. The closed end of the slow push fixture body 1 is connected to the end of the upper horizontal pipe in the transition fixture 2. The end of the lower vertical pipe in the transition fixture 2 is connected to the feeding system 3. The feeding system 3 is installed on the lower motion slide rail 4. The feeding system 3 can move along the motion slide rail by relying on the motor drive to control the slow push fixture body to approach or move away from the movable parts of the circuit breaker.

[0027] Furthermore, the motor speed in the feeding system 3 in this embodiment is adjustable, so the speed of the slow-pushing tool body can be controlled by adjusting the motor speed.

[0028] In a further specific embodiment, the slow-push fixture body 1 and the transition fixture 2 are detachably connected. In this embodiment, the slow-push fixture body 1 and the transition fixture 2 are specifically connected by bolts 5.

[0029] Depending on the different models of circuit breaker products, a set of slow-push fixtures for assembling the arc-extinguishing chamber of a circuit breaker is equipped with a variety of slow-push fixture bodies 1 of different specifications. Therefore, the staff can use the customized slow-push fixture body 1 according to the different models of circuit breaker products.

[0030] In order to protect the movable parts of the arc-extinguishing chamber from damage during movement, the main body 1 of the slow-push fixture in this embodiment is made of epoxy resin or other insulating materials with good performance.

[0031] In a further specific embodiment, the motion slide rail 4 is connected to the original arc-extinguishing chamber tooling slide rail.

[0032] This embodiment specifically addresses the slow-opening operation of large-capacity circuit breakers during the arc-extinguishing chamber assembly process, such as... Figure 2 , Figure 3 As shown, a transmission box connecting plate 12 is installed inside the transmission box of a large-capacity circuit breaker. A connecting plate pin hole 13 is provided at the front end of the transmission box connecting plate 12. The operating rod 9 in the movable part of the circuit breaker is located directly in front of the transmission box connecting plate 12, and an operating rod pin hole 10 is provided at the rear end of the operating rod 9. The connecting plate pin hole 13 and the operating rod pin hole 10 have the same specifications and can be aligned coaxially.

[0033] Simultaneously, the front end of the operating lever 9 is connected to the slip ring 7, and the slip ring 7 is connected to the air cylinder 8 and the nozzle 6; the operating lever 9, the air cylinder 8, the slip ring 7, and the nozzle 6 together constitute the movable parts of the circuit breaker. The movable parts are the last step in the assembly process of a single arc-extinguishing chamber. Moreover, the moving contact finger seat 11 is also equipped with a watch strap contact finger that locks and conducts electricity to the air cylinder 8.

[0034] The working principle of the slow-push tooling for assembling the arc-extinguishing chamber of the circuit breaker of the present invention is as follows:

[0035] The nozzle 6, slip ring 7, air cylinder 8, and operating lever 9 together constitute the movable parts in the arc-extinguishing chamber assembly process. Due to the optimized design of the large-capacity circuit breaker, a moving contact finger seat structure has been added. At the same time, a watch strap contact finger is installed inside the moving contact finger seat 11, which has a locking capability. During the arc-extinguishing chamber assembly process, the operating lever pin hole 10 on the operating lever 9 needs to be coaxial with the connecting plate pin hole 13 on the connecting plate 12 in the transmission box of the subsequent circuit breaker transmission box. However, when the movable parts of the arc-extinguishing chamber move, the moving contact finger seat 11 relies on the watch strap contact finger to make frictional contact with the air cylinder 8, which generates great resistance, making it difficult to push the movable parts manually. Moreover, since the nozzle 6 is relatively fragile, direct pushing may also risk damaging the nozzle 6. Therefore, the tooling of this invention is needed.

[0036] When in use, the slow-push fixture body 1 of the present invention will slowly move the movable parts by slowly pushing the slip ring 7, so that the operating rod pin hole 10 and the connecting plate pin hole 13 are coaxial, and the rear end of the operating rod 9 is connected to the transmission box connecting plate 12, thus completing the assembly of the movable parts of the arc extinguishing chamber.

[0037] This invention achieves safe and reliable slow-opening operation of the movable structure of the arc-extinguishing chamber without damaging its components, improves the assembly efficiency of the arc-extinguishing chamber, enables the circuit breaker to be assembled quickly, and reduces labor costs. It has good economic feasibility and is suitable for widespread application.

[0038] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker, characterized in that, The device includes a slow-push fixture body, a transition fixture, a feeding system, and a motion slide rail. The slow-push fixture body is a tubular structure with one open end and the other closed end. The open end of the slow-push fixture body can completely surround the nozzle in the movable part of the circuit breaker, and the corresponding port edge surface abuts against the slip ring behind the nozzle. The transition fixture adopts a vertical bent pipe structure. The closed end of the slow-push fixture body is connected to the end of the upper horizontal pipe in the transition fixture. The end of the lower vertical pipe in the transition fixture is connected to the feeding system. The feeding system is installed on the motion slide rail below. The feeding system can move along the motion slide rail by a motor to control the slow-push fixture body to move closer to or away from the movable part of the circuit breaker.

2. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 1, characterized in that, The motor speed in the feeding system is adjustable.

3. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 1, characterized in that, The main body of the slow-push fixture and the transition fixture are detachably connected; depending on the different models of circuit breaker products, a set of slow-push fixtures for assembling the arc-extinguishing chamber of the circuit breaker is provided with a variety of different specifications of the main body of the slow-push fixture.

4. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 3, characterized in that, The main body of the slow-push fixture and the transition fixture are connected by bolts.

5. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 1, characterized in that, The main body of the slow-push tooling is made of epoxy resin insulating material.

6. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 1, characterized in that, The motion slide rail is connected to the original arc-extinguishing chamber tooling slide rail.

7. The slow-push fixture for assembling the arc-extinguishing chamber of a circuit breaker according to claim 1, characterized in that, A transmission box connecting plate is installed inside the circuit breaker transmission box. A connecting plate pin hole is opened at the front end of the transmission box connecting plate. The operating rod of the movable part of the circuit breaker is located directly in front of the transmission box connecting plate, and an operating rod pin hole is opened at the rear end of the operating rod. The connecting plate pin hole and the operating rod pin hole have the same specifications and can be coaxially aligned.

8. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 7, characterized in that, The front end of the operating lever is connected to a slip ring, and a pressure cylinder and a nozzle are connected to the slip ring; the operating lever, the pressure cylinder, the slip ring, and the nozzle together constitute the movable parts of the circuit breaker.

9. The slow-push tooling for assembling the arc-extinguishing chamber of a circuit breaker according to claim 8, characterized in that, The moving contact finger seat is equipped with a watch strap contact finger that locks and conducts electricity to the air cylinder.

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