Centrally installed switchgear handcart position state indicating mechanism
By designing a handcart position status indicator mechanism in the circuit breaker compartment, and using a stroke push plate and swing linkage to drive the indicator plate to display the position mark, the problems of insufficient light and limited observation holes are solved, and the position of the circuit breaker and functional vehicle is conveniently confirmed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU BAIYUN ELECTRIC EQUIP
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-14
AI Technical Summary
In the existing technology, the circuit breaker room has insufficient lighting and the observation window and observation hole size are limited, making it difficult to accurately determine the position and status of the circuit breaker and the functional vehicle.
A central switchgear trolley position status indication mechanism was designed, including a circuit breaker platform plate, a fixed bracket, a stroke push plate, a swing linkage, a return spring, and a trolley position indicator plate. By moving the circuit breaker trolley between the test position and the working position, the stroke push plate is pushed to drive the indicator plate to display the working position or test position mark in the observation hole.
It enables easy observation of the circuit breaker and functional vehicle's position from the front of the switch cabinet. It has a simple structure, low cost, and is suitable for widespread application.
Smart Images
Figure CN224123767U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a position status indication mechanism for a centrally located cabinet handcart. Background Technology
[0002] Currently, substation operation and maintenance requires on-site operators to confirm the position of the circuit breakers and functional vehicles in the switchgear using two signal sources with different principles before and after operation. The first signal source is an electrical signal, which is generally provided by the auxiliary switches on the chassis of the circuit breaker and functional vehicle to provide signals for the working position and test position, and is electrically connected to the position indicator lights in the instrument room through the secondary circuit. The second signal source is a physical signal, which is generally determined by physically observing the position markings on the circuit breaker trolley through the observation window of the front middle door of the circuit breaker compartment.
[0003] For a second physical signal source, the following two methods are commonly used:
[0004] The first method: On the secondary line protection plates on both sides of the circuit breaker compartment, affix position indicator labels corresponding to the "test position" and "operating position" of the circuit breaker, respectively, and confirm the position signal through the observation window.
[0005] The first method is to add a position indicator mechanism to the chassis of the circuit breaker, and indicate the position through the observation window of the position indicator mechanism.
[0006] However, the above two methods have the following drawbacks: 1. The circuit breaker room is a closed compartment with no lighting, and the insufficient light is not conducive to observation; 2. Due to the requirements of arc explosion prevention, the size of the observation window of the front and middle doors cannot be too large, which limits the observation of the circuit breaker and the position of the functional vehicle. Utility Model Content
[0007] The purpose of this utility model is to provide a central switchgear trolley position status indication mechanism that is simple in structure, low in cost, easy to use, and easy to observe the arrival status of circuit breakers and functional vehicles.
[0008] The objective of this utility model is achieved through the following technical measures: a central switchgear trolley position status indication mechanism, characterized in that it includes a circuit breaker platform plate, a first fixed bracket, a second fixed bracket, a circuit breaker travel push plate, a return spring, a swing linkage, a trolley position indicator plate and a guide plate having markings for indicating working and test positions, the first fixed bracket and the second fixed bracket being installed on the inner side of the top surface of the circuit breaker platform plate, and the second fixed bracket being located beside the first fixed bracket, the circuit breaker travel push plate being slidably mounted on the first fixed bracket, and the return spring being along... The circuit breaker platform is configured in a front-to-back direction. One end of the swing link is connected to the rear end of the circuit breaker travel push plate, and the other end is connected to the first fixed bracket. The swing link is hinged to the second fixed bracket, and the rear end of the swing link is slidably engaged with the circuit breaker travel push plate. The front end is hinged to the handcart position indicator plate and can move relative to it. The guide plate is fixed on the inner side of the front of the circuit breaker platform and is located in front of the circuit breaker travel push plate. The handcart position indicator plate can be slidably mounted on the guide plate. An observation hole corresponding to the handcart position indicator plate is provided on the front of the circuit breaker platform to indicate the working position or test position.
[0009] By moving the circuit breaker trolley between the test position and the working position inside the cabinet, the circuit breaker travel push plate of this utility model is pushed, and the swing linkage moves on the Z-shaped groove, causing the trolley position indicator plate to move left and right. The markings of the working position or test position can be observed through the observation hole on the front of the switch cabinet to confirm the position of the trolley. Therefore, this utility model makes it easy to observe the position of the circuit breaker and the functional trolley, is convenient to use, and has a simple structure and low cost, making it suitable for widespread promotion and use.
[0010] In this invention, both the first fixed bracket and the circuit breaker travel push plate are folded plate shaped. The top plane of the first fixed bracket is fixed to the top surface of the circuit breaker platform plate. A sliding mechanism is provided between the vertical surface of the circuit breaker travel push plate and the vertical surface of the first fixed bracket, which allows the circuit breaker travel push plate to move back and forth. A Z-shaped groove is provided on the plane of the circuit breaker travel push plate. The Z-shaped groove is formed by connecting two straight grooves and inclined grooves extending in the front and rear directions. The straight groove of the rear section is close to the vertical surface of the circuit breaker travel push plate. A first sliding column is provided at the rear end of the swing linkage, and the first sliding column slides along the Z-shaped groove.
[0011] The sliding mechanism of this utility model includes a sliding hole, a second sliding column, and a fixed plate. The sliding hole is opened on the vertical surface of the first fixed bracket in the front-back direction. The second sliding column is disposed on the vertical surface of the circuit breaker travel push plate and passes through the sliding hole and is connected to the fixed plate at its tail end. The second sliding column can slide along the sliding hole.
[0012] The swing linkage of this utility model is a bent rod, which is formed by connecting a first horizontal linkage and a second horizontal linkage higher than the first horizontal linkage through a vertical rod segment. The first sliding column is located at the end of the first horizontal linkage. The second fixed bracket is U-shaped. The second horizontal linkage is hinged to the bottom surface of the second fixed bracket, and the end of the second horizontal linkage is provided with an elongated hole. The handcart position indicator plate is formed by connecting a longitudinal connecting part and a transverse indicating part. The longitudinal connecting part is provided with a third sliding column. The third sliding column extends into the elongated hole and can slide along it and serve as a hinge axis. The working position and test position markings are located on the transverse indicating part. The guide plate is provided with a sliding groove, and the transverse indicating part can slide along the sliding groove.
[0013] This utility model provides a guide connecting plate at the rear end of the circuit breaker travel push plate. The guide connecting plate consists of a lower connecting part and an upper bending part. An opening is provided at the lower end of the bending part. The reset spring is located below the top plane of the first fixed bracket, and its front end is connected to a fixed part extending downward from the plane. The rear end passes through the opening and is engaged with the bending part. A guide hole extending in the front-back direction is provided on the top surface of the circuit breaker platform plate. The upper part of the bending part passes through the guide hole and can move along it.
[0014] Compared with the prior art, the present invention has the following significant advantages:
[0015] (1) By moving the circuit breaker trolley between the test position and the working position inside the cabinet, the circuit breaker travel push plate of this utility model is pushed, and the swing linkage moves on the Z-shaped groove, which drives the trolley position indicator plate to move left and right. The markings of the working position or test position can be observed from the front of the switch cabinet through the observation hole to confirm the position of the trolley. Therefore, this utility model makes it easy to observe the position of the circuit breaker and the functional trolley, and is convenient to use.
[0016] (2) This utility model has a simple structure, low cost, strong practicality, and is suitable for widespread promotion and use. Attached Figure Description
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model (indicating that the circuit breaker is in the test position);
[0019] Figure 2 This is the second three-dimensional structural schematic diagram of this utility model (indicating that the circuit breaker is in the working position);
[0020] Figure 3 This is the third three-dimensional structural schematic diagram of this utility model;
[0021] Figure 4 This is a front view of the circuit breaker in the test position using this utility model;
[0022] Figure 5 This is a side view of the circuit breaker in the test position indicated by this utility model;
[0023] Figure 6 This is a front view of the circuit breaker indicating its working position using this utility model;
[0024] Figure 7 This is a side view showing the circuit breaker in the working position as indicated by this invention.
[0025] In the diagram: 1-Circuit breaker platform plate, 2-First fixed bracket, 3-Second fixed bracket, 4-Circuit breaker travel push plate, 5-Swing link, 6-Handcart position indicator plate, 7-Reset spring, 8-Guide plate, 9-Observation hole, 10-Z-shaped groove, 11-Top surface, 12-First sliding column, 13-Sliding hole, 14-Second sliding column, 15-Fixed plate, 16-Long slot, 17-Third sliding column, 18-Guide connecting plate, 19-Guide hole. Detailed Implementation
[0026] like Figures 1-7 As shown, this utility model discloses a circuit breaker platform plate 1, a first fixed bracket 2, a second fixed bracket 3, a circuit breaker travel push plate 4, a return spring 7, a swing linkage 5, a handcart position indicator plate 6 and a guide plate 8 with markings for indicating working and test positions. The first fixed bracket 2 and the second fixed bracket 3 are installed on the inner side of the top surface of the circuit breaker platform plate 1, and the second fixed bracket 3 is located beside the first fixed bracket 2. The circuit breaker travel push plate 4 is slidably installed on the first fixed bracket 2. The return spring 7 is arranged in the front-rear direction, with one end connected to the rear end of the circuit breaker travel push plate 4. One end is connected to the first fixed bracket 2, the swing link 5 is hinged to the second fixed bracket 3, and the rear end of the swing link 5 is slidably engaged with the circuit breaker travel push plate 4, while the front end is hinged to the handcart position indicator plate 6 and can move relative to it. The guide plate 8 is fixed on the inner side of the front of the circuit breaker platform plate 1 and is located in front of the circuit breaker travel push plate 4. The handcart position indicator plate 6 can be slidably mounted on the guide plate 8. An observation hole 9 corresponding to the handcart position indicator plate 6 is opened on the front of the circuit breaker platform plate 1 to indicate the working position or test position. In this embodiment, the labels indicating the working position and test position are the words "working position" and "test position".
[0027] Both the first fixed bracket 2 and the circuit breaker travel push plate 4 are folded plate shaped. The top plane 11 of the first fixed bracket 2 is fixed to the top surface of the circuit breaker platform plate 1. A sliding mechanism is provided between the vertical surface of the circuit breaker travel push plate 4 and the vertical surface of the first fixed bracket 2, which allows the circuit breaker travel push plate 4 to move back and forth. A Z-shaped groove 10 is provided on the plane of the circuit breaker travel push plate 4. The Z-shaped groove 10 is formed by connecting two straight grooves and inclined grooves extending in the front and rear directions. The straight groove in the rear section is closer to the vertical surface of the circuit breaker travel push plate 4. The rear end of the swing link 5 is provided with a first sliding column 12, which slides along the Z-shaped groove 10.
[0028] The sliding mechanism includes a sliding hole 13, a second sliding column 14 and a fixed plate 15. The sliding hole 13 is opened on the vertical surface of the first fixed bracket 2 in the front-back direction. The second sliding column 14 is set on the vertical surface of the circuit breaker travel push plate 4 and passes through the sliding hole 13 and is connected to the fixed plate 15 at its tail end. The second sliding column 14 can slide along the sliding hole 13.
[0029] The swing link 5 is a bent rod, which is formed by connecting the first horizontal link and the second horizontal link, which is higher than the first horizontal link, through a vertical rod section. The first sliding column 12 is located at the end of the first horizontal link. The second fixed bracket 3 is U-shaped. The second horizontal link is hinged to the bottom surface of the second fixed bracket 3, and the end of the second horizontal link is provided with a long waist hole 16. The handcart position indicator plate 6 is formed by connecting the longitudinal connecting part and the transverse indicating part. The longitudinal connecting part is provided with a third sliding column 17. The third sliding column 17 extends into the long waist hole 16 and can slide along it and serve as a hinge axis. The working position and test position markings are located on the transverse indicating part. The guide plate 8 is provided with a sliding groove, and the transverse indicating part can slide left and right along the sliding groove.
[0030] The rear end of the circuit breaker travel push plate 4 is provided with a guide connecting plate 18. The guide connecting plate 18 consists of a lower connecting part and an upper bending part. An opening is provided at the lower end of the bending part. The return spring 7 is located below the top plane of the first fixed bracket 2 and its front end is connected to the fixed part extending downward from the plane. The rear end passes through the opening and is engaged with the bending part. A guide hole 19 extending in the front-back direction is provided on the top surface of the circuit breaker platform plate 1. The upper part of the bending part passes through the guide hole 19 and can move along it.
[0031] The first sliding column 12, the second sliding column 14, and the third sliding column 17 are all composed of bolts and bushings mounted on the bolts. The circuit breaker travel push plate 4 is mounted on the first fixed bracket 2 via bolts, bushings, and a fixing plate 15, allowing for flexible back-and-forth movement. The swing link 5 is mounted on the second fixed bracket 3 via bolts and bushings, allowing for flexible horizontal rotation. The rear end of the swing link 5 is mounted in the Z-shaped groove of the circuit breaker travel push plate 4 via bushings and bolts, allowing for flexible sliding along the Z-shaped groove. The other end of the swing link 5 has a long slot. The truck position indicator plate 6 is mounted on the inner side of the circuit breaker platform plate 1 via a guide plate 8, allowing for flexible left-right sliding. The longitudinal connecting part of the truck position indicator plate 6 is mounted on the long slot of the swing link 5 via bushings and bolts, allowing for left-right swinging as the swing link 5 rotates. The front of the truck position indicator plate 6 is sequentially marked with "Working Position" and "Test Position". A rectangular observation hole 9 is opened on the front of the circuit breaker platform plate 1, allowing observation of the position of the markings on the truck position indicator plate 6.
[0032] The working principle and usage process of this utility model are as follows:
[0033] After the circuit breaker trolley is pushed into the cabinet, it is initially in the test position. At this time, the rear of the circuit breaker trolley chassis is in contact with the circuit breaker travel push plate 4 (specifically, the part of the guide connecting plate 18 extending out of the guide hole 19). When the circuit breaker trolley moves to the working position, the circuit breaker will push the circuit breaker travel push plate 4 backward. During the backward movement, the circuit breaker travel push plate 4 drives the swing connecting rod 5 to rotate clockwise (viewed from bottom to top) through the Z-shaped groove. The other end of the swing connecting rod 5 pushes the trolley position indicator plate 6 to move to the right until the circuit breaker reaches the working position. The "working position" mark on the trolley position indicator plate 6 will then be fully visible in the observation hole of the circuit breaker platform plate 1. Figure 6 , Figure 7 As shown; when the circuit breaker returns from the working position to the test position, the circuit breaker travel push plate 4 will move forward under the tension of the return spring 7. During the backward movement of the circuit breaker travel push plate 4, the swing linkage 5 will rotate counterclockwise (viewed from bottom to top) through the Z-shaped groove. The other end of the swing linkage 5 will push the handcart position indicator plate 6 to the left until the circuit breaker reaches the test position. The "Test Position" mark on the handcart position indicator plate 6 will then be fully visible in the observation hole 9 of the circuit breaker platform plate 1. Figure 4 , Figure 5 As shown.
[0034] The embodiments of this utility model are not limited thereto. Based on the above content of this utility model, and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of this utility model, this utility model can also be modified, replaced or changed in various other forms, all of which fall within the scope of protection of this utility model.
Claims
1. A position status indication mechanism for a centrally located cabinet trolley, characterized in that: The circuit breaker includes a circuit breaker platform plate, a first fixed bracket, a second fixed bracket, a circuit breaker travel push plate, a return spring, a swing linkage, a trolley position indicator plate and a guide plate with markings for working and test positions. The first and second fixed brackets are mounted on the inner side of the top surface of the circuit breaker platform plate, with the second fixed bracket located beside the first fixed bracket. The circuit breaker travel push plate is slidably mounted on the first fixed bracket. The return spring is arranged in the front-rear direction, with one end connected to the rear end of the circuit breaker travel push plate and the other end connected to the first fixed bracket. The swing linkage is hinged to the second fixed bracket, with the rear end of the swing linkage slidingly engaged with the circuit breaker travel push plate and the front end hinged to the trolley position indicator plate, allowing relative movement. The guide plate is fixed on the inner side of the front of the circuit breaker platform plate and located in front of the circuit breaker travel push plate. The trolley position indicator plate is slidably mounted on the guide plate. An observation hole corresponding to the trolley position indicator plate is provided on the front of the circuit breaker platform plate to indicate the working or test position.
2. The position status indication mechanism of the central cabinet trolley according to claim 1, characterized in that: Both the first fixed bracket and the circuit breaker travel push plate are folded plate shaped. The top plane of the first fixed bracket is fixed to the top surface of the circuit breaker platform plate. A sliding mechanism is provided between the vertical surface of the circuit breaker travel push plate and the vertical surface of the first fixed bracket, which allows the circuit breaker travel push plate to move back and forth. A Z-shaped groove is provided on the plane of the circuit breaker travel push plate. The Z-shaped groove is formed by connecting two straight grooves and inclined grooves extending in the front and rear directions. The straight groove of the rear section is close to the vertical surface of the circuit breaker travel push plate. The rear end of the swing link is provided with a first sliding column, which can slide along the Z-shaped groove.
3. The position status indication mechanism of the central cabinet trolley according to claim 2, characterized in that: The sliding mechanism includes a sliding hole, a second sliding column, and a fixed plate. The sliding hole is opened on the vertical surface of the first fixed bracket in the front-back direction. The second sliding column is disposed on the vertical surface of the circuit breaker travel push plate and passes through the sliding hole and is connected to the fixed plate at its tail end. The second sliding column can slide along the sliding hole.
4. The position status indication mechanism of the central cabinet trolley according to claim 3, characterized in that: The swing linkage is a bent rod, which is formed by connecting a first horizontal linkage and a second horizontal linkage higher than the first horizontal linkage through a vertical rod segment. The first sliding column is located at the end of the first horizontal linkage. The second fixed bracket is U-shaped. The second horizontal linkage is hinged to the bottom surface of the second fixed bracket, and the end of the second horizontal linkage is provided with an elongated hole. The handcart position indicator plate is formed by connecting a longitudinal connecting part and a transverse indicating part. The longitudinal connecting part is provided with a third sliding column. The third sliding column extends into the elongated hole and can slide along it and serve as a hinge axis. The working position and test position markings are located on the transverse indicating part. The guide plate is provided with a sliding groove, and the transverse indicating part can slide left and right along the sliding groove.
5. The position status indication mechanism of the central cabinet trolley according to claim 4, characterized in that: A guide connecting plate is provided at the rear end of the circuit breaker travel push plate. The guide connecting plate consists of a lower connecting part and an upper bending part. An opening is provided at the lower end of the bending part. The return spring is located below the top plane of the first fixed bracket and its front end is connected to a fixed part extending downward from the plane. The rear end passes through the opening and is engaged with the bending part. A guide hole extending in the front-back direction is provided on the top surface of the circuit breaker platform plate. The upper part of the bending part passes through the guide hole and can move along it.