Indication interlocking mechanism for vacuum circuit breaker
By designing an indicator interlocking mechanism for vacuum circuit breakers, the reliability of synchronous indication and interlocking mode of indication and interlocking is achieved, and the problem of single isolation indicator function and inability to be reliable in the prior art is solved, and simple operation and miniaturized design are achieved.
Patent Information
- Application Number
- CN202422082381.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The isolation indicator of the existing vacuum circuit breaker has a single function, and the synchronization of the indication and the interlock cannot be achieved, and the interlocking method is not reliable enough.
An indicator interlocking mechanism is designed to synchronize the indication and interlocking through the design of the isolation interlocking arm and the indicator, and to achieve the reliability and simplicity of the interlocking through the coordination of the limiting groove, the panel locking plate and the isolation interlocking plate.
The synchronous operation of instructions and interlocking is realized, the interlocking method is reliable and the operation is simple, reducing the parts and footprint of the interlocking mechanism, so that the operating mechanism can be designed in a miniaturized manner.
Smart Images
Figure CN222995296U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vacuum circuit breakers, and particularly relates to an indicating and interlocking mechanism for a vacuum circuit breaker. Background Art
[0002] A vacuum circuit breaker is a circuit breaker that uses vacuum as the insulating and arc-extinguishing medium between contacts. Because of its advantages of small volume and light weight, it is widely used in distribution networks. Many industrial and mining enterprises, power plants, and substations use vacuum circuit breakers for the protection and control of electrical equipment.
[0003] Generally, a vacuum circuit breaker is provided with an isolation indicating member, which is generally only used for the state indication of isolation opening and isolation closing, and its function is relatively single. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an indicating and interlocking mechanism for a vacuum circuit breaker.
[0005] To achieve the above purpose, the utility model provides the following technical solutions:
[0006] An indicating and interlocking mechanism for a vacuum circuit breaker, comprising:
[0007] An isolation interlocking crank arm, which is linked with an isolation main shaft, and an indicating member linked with it is arranged on the isolation interlocking crank arm, and an interlocking member is arranged at one end of the isolation interlocking crank arm;
[0008] A limit groove, arranged on the box body;
[0009] A panel locking plate, which can be slid vertically on the box body, can move upward or downward from the isolation operation position, and a limiting member for vertically limiting the interlocking member is arranged on the inner side thereof;
[0010] An isolation interlocking piece, which is rotatably arranged on the inner side of the panel locking plate, and an inverted buckle is arranged at the lower end of the isolation interlocking piece towards the box body, and the inverted buckle has a tendency to move towards the limit groove, and a matching portion for cooperating with the interlocking member is arranged at the upper end of the isolation interlocking piece,
[0011] When the panel locking plate moves upward from the isolation operation position, the isolation interlocking crank arm has an isolation closing state that cooperates with the limiting member to restrict the panel locking plate from moving to the grounding operation position, and an isolation opening state that releases the restriction on the panel locking plate from moving to the grounding operation position,
[0012] When the panel locking plate moves downward from the isolation operation position and the isolation interlocking arm is in the isolation open state, the isolation locking piece rotates relatively and causes the undercut to form a limiting fit with the limiting groove. When the isolation interlocking arm is in the isolation closed state, the isolation locking piece is driven by the isolation interlocking arm to rotate in the opposite direction, causing the undercut to release the limiting fit with the limiting groove.
[0013] The indicator is an arc-shaped indicator plate, which is fixedly arranged above the isolation interlocking crank arm through a supporting plate.
[0014] The isolation interlocking crank arm is a cam structure, and a matching hole is provided therein for forming a linkage match with the isolation main shaft.
[0015] The interlocking member is a columnar structure, which is arranged perpendicular to the isolation interlocking crank arm.
[0016] The matching portion is an inclined surface.
[0017] An elastic member is provided between the isolation interlocking piece and the box body for driving the undercut to move toward the limiting groove of the box body.
[0018] An arc-shaped notch matched with the isolation main shaft is provided at the upper end of the panel locking plate.
[0019] The beneficial effects of the utility model are as follows: the isolation interlocking crank arm and the indicator are directly designed as an integrated structure, which directly realizes the synchronization of indication and interlocking. At the same time, the interlocking method is reliable and easy to operate, which greatly reduces the parts of the interlocking mechanism and reduces its occupied space, so that the operating mechanism can be miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The utility model is a schematic diagram of the structure of a vacuum circuit breaker.
[0021] Figure 2 It is a structural schematic diagram of the utility model.
[0022] Figure 3 It is a schematic diagram of the structure when the panel locking plate of the utility model moves upward (isolated and closed).
[0023] Figure 4 It is a schematic diagram of the structure when the panel locking plate of the utility model moves upward (isolating).
[0024] Figure 5 It is a structural schematic diagram of the panel of the present invention when it moves to the grounding operation position.
[0025] Figure 6 It is a structural schematic diagram of the isolation interlocking crank arm of the utility model.
[0026] Figure 7It is a schematic diagram of the cooperation between the panel locking plate and the isolation interlocking piece of the utility model. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0029] like Figure 1 and Figure 2 As shown, the utility model discloses an indication interlock mechanism for a vacuum circuit breaker, which is mainly used for a vacuum circuit breaker, and is composed of an isolation interlocking crank arm, a limit groove arranged on a box body, a panel locking plate and an isolation interlocking sheet, wherein the isolation interlocking crank arm is linked with the isolation main shaft, and an indicator is provided on the isolation interlocking crank arm for isolation separation and closing indication, and while the separation and closing indication is performed, the interlocking coordination of the isolation operation and the grounding operation is realized.
[0030] like Figure 6 As shown, the isolation interlocking crank arm 3 is arranged in linkage with the isolation main shaft 2, and the isolation interlocking crank arm 3 is provided with an indicator 32 linked with it, and one end of the isolation interlocking crank arm 3 is provided with an interlocking member 31, the isolation interlocking crank arm 3 is a cam structure, and a matching hole is provided therein for linkage with the isolation main shaft 2, the matching hole is adapted to the outer contour of the isolation main shaft, and adopts a non-circular design, which can directly realize the linkage between the two, the indicator 32 is an arc-shaped indicator plate, which is distributed with the isolation main shaft as the center of the circle, and is fixedly arranged above the isolation interlocking crank arm 3 by a support plate 33, so that the indicator is closer to the indicator hole on the panel of the box.
[0031] The interlocking member 31 is a columnar structure, which is arranged perpendicular to the isolation interlocking crank arm 3 and can change its position as the isolation interlocking crank arm 3 rotates.
[0032] The limiting groove 11 is arranged on the box body 1, and its position is matched with the position of the undercut when the panel locking plate moves to the isolation operation position.
[0033] like Figure 7As shown, the panel locking plate 4 can be slid vertically on the box body 1. It has an inoperable position 300, an isolation operation position 200, and a grounding operation position 100 arranged from top to bottom. It can move back and forth between the three positions. And a limiting member 41 is provided inside it to form a vertical limit with the interlocking member 31. That is, when the isolation interlocking arm is in the isolation closed state, the interlocking member is just located above the limiting member 41 and restricts its upward movement, thereby restricting the upward movement of the panel locking plate.
[0034] The isolation interlocking piece 5 can be rotatably arranged inside the panel locking plate 4. It is fixed inside the panel locking plate through a rotating shaft. It can be driven by the panel locking plate to move up or down. And the lower end of the isolation interlocking piece 5 is provided with an inverted buckle 51 facing the box body direction, and the inverted buckle 51 has a tendency to move towards the limiting groove 11 direction. The upper end of the isolation interlocking piece 5 is provided with a cooperating portion 52 that cooperates with the interlocking member 31. When the panel locking plate is in the inoperable position, since the inverted buckle of the isolation interlocking piece has not reached the limiting groove, it can move up with the panel locking plate.
[0035] When the panel locking plate 4 moves from the isolation operation position to the grounding operation position, the isolation interlocking arm 3 has an isolation closed state that cooperates with the limiting member 41 to restrict the panel locking plate 4 from moving towards the grounding operation position, and an isolated open state that releases the restriction on the panel locking plate 4 from moving towards the grounding operation position.
[0036] When the panel locking plate 4 moves from the grounding operation position to the isolation operation position, when the isolation interlocking arm 3 is in the isolated open state, the isolation interlocking piece 5 rotates relatively, and the inverted buckle 51 forms a limiting fit with the limiting groove 11. When the isolation interlocking arm 3 is in the isolation closed state, the isolation interlocking piece 5 is driven by the isolation interlocking arm 3 to rotate in the reverse direction, so that the inverted buckle 51 is released from the limiting fit with the limiting groove 11.
[0037] As Figure 3 shown, at this time the panel locking plate moves from the inoperable position to the isolation operation position and is in the isolation closed state at this time. The interlocking member abuts against the limiting member, restricting the panel locking plate from continuing to move towards the grounding operation position. At the same time, the arc-shaped notch on the panel locking plate is aligned with the operation hole of the isolation main shaft, so that the isolation main shaft can be operated to switch the isolation closed state to the isolated open state.
[0038] As Figure 4 shown, at this time it is in the isolated open state, and the interlocking member releases the limit on the limiting member. At this time, the panel locking plate can continue to move towards the grounding operation position. At the same time, since the pressing of the interlocking member on the isolation interlocking piece is released, the isolation interlocking piece rotates relatively, and the inverted buckle is stuck into the limiting groove and can continue to move up along the limiting groove.
[0039] As Figure 5As shown, at this time, the panel locking plate is in the conductive grounding operation position, and the operating hole of the isolation main shaft is blocked by the panel locking plate, and the isolation closing operation cannot be performed. At the same time, the isolation interlocking plate restricts the isolation interlocking arm, thereby limiting the switching of the isolation main shaft from the open state to the closed state. At the same time, due to the upward movement of the panel locking plate, the grounding switch operating hole on the lower side can be opened, and the grounding switch operation can be performed.
[0040] When it is necessary to move downward from the isolation operation position to the inoperable position, when it is in the isolation opening state, since the undercut of the isolation interlocking piece is placed in the limit groove, the panel locking plate is restricted and cannot move downward. When and only when the isolation opening state is switched to the isolation closing state, the isolation interlocking arm 3 acts on the matching part of the isolation interlocking piece and makes the undercut move away from the limit groove. Figure 4 to Figure 3 The state switching diagram releases the limit cooperation between the two. At this time, the panel locking plate can continue to move downward to the inoperable position, thereby blocking the isolation operation hole and the grounding operation hole, making it impossible to operate manually.
[0041] Through the cooperation of the three, a more reliable interlocking can be achieved, and the structure is simple and the space occupied is small.
[0042] The matching portion 52 is an inclined surface, which can cooperate with the interlocking piece to make the isolation interlocking piece swing relatively.
[0043] An elastic member is provided between the isolation interlocking piece 5 and the box body 1 to drive the undercut 51 to move toward the limiting groove 11 of the box body. The elastic member may be a tension spring that applies force to the undercut to move toward the limiting groove of the box body.
[0044] The upper end of the panel locking plate 4 is provided with an arc-shaped notch 42 adapted to the isolation main shaft 2, and the stroke amount is used to achieve that the arc-shaped notch is exactly matched with the operating hole of the isolation main shaft when the panel locking plate is in the isolation operation position.
[0045] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.
Claims
1. An indication interlocking mechanism for a vacuum circuit breaker, characterized in that: It includes: An isolation interlocking crank arm (3) is arranged in linkage with the isolation main shaft (2), and an indicator (32) that is linked with the isolation interlocking crank arm (3) is provided on the isolation interlocking crank arm (3), and an interlocking member (31) is provided at one end of the isolation interlocking crank arm (3); A limiting groove (11) is arranged on the box body (1); A panel locking plate (4) is slidably disposed on the box body (1) in a vertical direction, and can be moved upward or downward from an isolation operation position, and a limiting member (41) is provided on its inner side to form an upper limit position in the vertical direction together with the interlocking member (31); An isolation interlocking piece (5) is rotatably arranged on the inner side of the panel locking plate (4), and a buckle (51) is provided at the lower end of the isolation interlocking piece (5) toward the box body, and the buckle (51) has a tendency to move toward the limiting groove (11), and a matching portion (52) that matches the interlocking piece (31) is provided at the upper end of the isolation interlocking piece (5). When the panel locking plate (4) moves upward from the isolation operation position, the isolation interlocking crank arm (3) has an isolation closed state for cooperating with the limiter (41) to restrict the panel locking plate (4) from moving toward the grounding operation position, and an isolation open state for releasing the restriction on the panel locking plate (4) from moving toward the grounding operation position. When the panel locking plate (4) moves downward from the isolation operation position, the isolation interlocking arm (3) is in the isolation open state, the isolation interlocking piece (5) rotates relatively, and the undercut (51) and the limiting groove (11) form a limiting fit. When the isolation interlocking arm (3) is in the isolation closed state, the isolation interlocking piece (5) is driven by the isolation interlocking arm (3) to rotate in the opposite direction, so that the undercut (51) and the limiting groove (11) are released from the limiting fit.
2. The indicating interlocking mechanism for a vacuum circuit breaker according to claim 1, characterized in that: The indicator (32) is an arc-shaped indicator plate, which is fixedly arranged above the isolation interlocking crank arm (3) via a support plate (33).
3. An indication interlocking mechanism for a vacuum circuit breaker according to claim 1 or 2, characterized in that: The isolation interlocking crank arm (3) is a cam structure, and is provided with a matching hole therein for forming a linkage match with the isolation main shaft (2).
4. The indicating interlocking mechanism for a vacuum circuit breaker according to claim 3, characterized in that: The interlocking member (31) is a columnar structure, and is arranged perpendicular to the isolation interlocking crank arm (3).
5. The indicating interlocking mechanism for a vacuum circuit breaker according to claim 1, characterized in that: The matching portion (52) is an inclined surface.
6. The indicating interlocking mechanism for a vacuum circuit breaker according to claim 1, characterized in that: An elastic member is provided between the isolation interlocking piece (5) and the box body (1) for driving the undercut (51) to move in the direction of the limiting groove (11) of the box body.
7. The indicating interlocking mechanism for a vacuum circuit breaker according to claim 1, characterized in that: An arc-shaped notch (42) adapted to the isolation main shaft (2) is provided at the upper end of the panel locking plate (4).