Circuit breaker position indicating device, circuit breaker and switch cabinet

Abstract

The utility model belongs to the technical field of medium-voltage power distribution equipment, and discloses a circuit breaker position indicating device, a circuit breaker and a switch cabinet. When the circuit breaker handcart is rocked in the first direction, the circuit breaker handcart abuts against the first end of the movable frame, the movable frame is made to rotate around the pivot joint shaft, the position marks are driven to move upwards in the visual window, and therefore switching of the position marks is completed. And when the circuit breaker handcart is rocked out along the first direction, the movable frame automatically returns under the action of self gravity to realize the resetting of the position identification, and the circuit breaker position indicating device realizes the switching of the position identification by utilizing the lever principle, so that the manufacturing and assembling cost is reduced, the abrasion among parts is reduced, and the working efficiency is improved. According to the circuit breaker position indicating device, the reliability and durability of the circuit breaker position indicating device are improved, meanwhile, through the design that L1 is smaller than L2 on the movable frame, position identification switching is more obvious and accurate, an operator can conveniently observe the position state of a circuit breaker handcart in real time, and therefore the safety and stability of circuit breaker operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of medium-voltage power distribution equipment technology, and in particular to a circuit breaker position indicator device, a circuit breaker and a switch cabinet. Background Technology

[0002] Switchgear, as a key protection and control device in a power system, typically contains circuit breakers. Circuit breakers usually include a circuit breaker trolley, which consists of a chassis and the circuit breaker body. The circuit breaker body is mounted on the chassis, which can move the circuit breaker body to different positions, such as test and service positions. Therefore, the accuracy and reliability of the circuit breaker position indication are crucial for the stable operation of the power system.

[0003] However, existing circuit breaker position indicating devices typically employ complex mechanical structures. For example, the position marker is moved via a multi-link mechanism or gear mechanism when the circuit breaker trolley moves. This not only results in high manufacturing costs and complex assembly processes, but also makes them prone to wear, loosening, or jamming due to the numerous parts, affecting the accuracy of the indication. Furthermore, the complex mechanical structure can lead to indication lag, making it difficult for operators to accurately determine the position of the circuit breaker trolley.

[0004] Therefore, there is an urgent need for a circuit breaker position indicator device, circuit breaker, and switchgear to solve the above problems. Utility Model Content

[0005] One objective of this invention is to provide a circuit breaker position indicator device that simplifies the structure of the circuit breaker position indicator device, reduces manufacturing costs, and improves the accuracy and reliability of position indication.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Circuit breaker position indicator, used to indicate the movement position of the circuit breaker trolley, includes:

[0008] The partition includes a first plate and a second plate. The second plate is disposed at the first end of the first plate and forms a preset angle with the first plate. The first plate has a strip-shaped hole extending in a first direction, and the second plate has a visualization window.

[0009] The mounting bracket is located on the side of the first plate away from the circuit breaker trolley;

[0010] The movable frame is pivotally connected to the mounting frame via a pivot shaft. The first end of the movable frame can protrude from the first plate through the strip hole, and the second end of the movable frame is provided with a position mark, which is located within the visualization window.

[0011] The projected length of the distance from the axis of the pivot shaft to the first end of the movable frame is L1, and the projected length of the distance from the axis of the pivot shaft to the second end of the movable frame is L2, where L1 < L2.

[0012] When the circuit breaker trolley slides along the first direction, it can press against or detach from the first end of the movable frame to make the movable frame rotate, thereby causing the position indicator to move relative to the visualization window in a second direction, the first direction being perpendicular to the second direction.

[0013] Optionally, the movable frame includes:

[0014] An indicator, wherein the location marker is disposed on the indicator;

[0015] A first rod and a second rod, one end of the second rod is connected to the indicator and the other end is connected to the first rod, and the end of the first rod near the second rod is pivotally connected to the mounting frame via the pivot shaft;

[0016] At least a portion of the first rod can pass through the strip hole to protrude from the first plate, and along the direction from the second rod to the first rod, the height of the portion of the first rod protruding from the first plate gradually increases.

[0017] Optionally, the first member includes:

[0018] A connecting section, the first end of which is connected to the second rod and pivotally connected to the mounting frame, wherein the connection between the connecting section and the second rod is provided with a first included angle α, the first included angle α being located on the first side of the movable frame, wherein 90°≤α≤180°;

[0019] The transmission section is connected to the second end of the connecting section and slides through the middle partition. The connection between the connecting section and the transmission section is provided with a second included angle β, which is located on the second side of the movable frame, wherein 90°≤β≤180°.

[0020] Optionally, the top surface of the transmission section is provided with a guide slope, which gradually rises along the direction from the second rod to the first rod.

[0021] Optionally, the mounting bracket has two first through holes facing each other, the first rod has a second through hole, the pivot shaft passes through the second through hole and is coaxially fixed with the first rod, and the two ends of the pivot shaft are respectively rotatably disposed in the corresponding first through hole.

[0022] Optionally, the pivot shaft includes a first shaft segment and a second shaft segment connected in sequence. The first shaft segment and the second shaft segment are rotatably disposed in two first through holes. The second shaft segment has a first limiting surface in its axial direction. The inner wall of the second through hole has a stop surface. The second shaft segment passes through the second through hole. The stop surface fits against the first limiting surface so that the first rod and the second shaft segment rotate synchronously.

[0023] Optionally, a second limiting surface is provided radially at one end of the second shaft segment near the first shaft segment, and the side wall of the first rod can abut against the second limiting surface;

[0024] The first shaft segment and the second shaft segment are respectively provided with a first through hole and a second through hole in their radial directions. A first limiting rod is provided in the first through hole and a second limiting rod is provided in the second through hole. The first rod is clamped between the first limiting rod and the second limiting rod.

[0025] Optionally, a gasket is provided between the first limiting rod and the first rod, and between the second limiting rod and the first rod. The gasket is provided with a limiting hole with the same cross-sectional shape as the second shaft segment, and the second shaft segment passes through the limiting hole.

[0026] Optionally, a first torsional elastic element is sleeved on the first shaft segment, one end of the first torsional elastic element is hung on the first limiting rod, and the other end is pressed against the mounting bracket;

[0027] A second torsional elastic element is sleeved on the second shaft segment. One end of the second torsional elastic element is hung on the second limiting rod, and the other end is pressed against the mounting bracket.

[0028] Optionally, both the first shaft segment and the second shaft segment are fitted with bushings, and the bushings are rotatably disposed in the first through holes corresponding to them.

[0029] Optionally, the circuit breaker position indicating device further includes a limiting member, the limiting member comprising:

[0030] A mounting plate is disposed on the side of the second plate facing the first plate, and the mounting plate has a clearance opening corresponding to the visualization window;

[0031] Two first limiting plates are respectively located on the mounting plates on both sides of the visualization window, and the indicator is slidably disposed between the two first limiting plates along the second direction.

[0032] The second limiting plate is disposed at the bottom of the mounting plate and located between the two first limiting plates, and the indicator can abut against the second limiting plate.

[0033] Another objective of this invention is to provide a circuit breaker that improves the safety and reliability of circuit breaker operation.

[0034] To achieve this objective, the present invention adopts the following technical solution:

[0035] The circuit breaker includes a circuit breaker trolley and the aforementioned circuit breaker position indicator device. When the circuit breaker trolley slides along the first direction, the circuit breaker position indicator device can be activated.

[0036] Another objective of this invention is to provide a switch cabinet that improves the safety and reliability of the switch cabinet.

[0037] To achieve this objective, the present invention adopts the following technical solution:

[0038] A switch cabinet includes a cabinet body and the aforementioned circuit breaker, wherein the circuit breaker is disposed within the cabinet body.

[0039] Beneficial effects:

[0040] The circuit breaker position indicator device provided by this utility model allows the circuit breaker trolley to press against the first end of the movable frame when it is tumbled forward in the first direction. This causes the movable frame to rotate around the pivot shaft, moving the position indicator upward within the visualization window, thus completing the switching of the position indicator. When the circuit breaker trolley is tumbled out in the first direction, the movable frame automatically returns to its original position under its own gravity, resetting the position indicator. Compared with the prior art, this circuit breaker position indicator device utilizes the lever principle to switch the position indicator, reducing manufacturing and assembly costs, minimizing wear between parts, and improving the reliability and durability of the circuit breaker position indicator device. At the same time, the L1 < L2 design on the movable frame makes the switching of the position indicator more obvious and accurate, facilitating operators to observe the position status of the circuit breaker trolley in real time, thereby improving the safety and stability of circuit breaker operation.

[0041] The circuit breaker provided by this utility model includes a circuit breaker trolley and the aforementioned circuit breaker position indicator device. When the circuit breaker trolley slides along a first direction, the circuit breaker position indicator device can be activated, thereby reflecting the position of the circuit breaker trolley in real time and improving the safety and reliability of circuit breaker operation.

[0042] The switch cabinet provided by this utility model includes a cabinet body and the aforementioned circuit breaker. The circuit breaker is installed inside the cabinet body, thereby improving the safety and stability of the switch cabinet operation. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the switch cabinet provided in an embodiment of the present utility model;

[0044] Figure 2This is a partial structural schematic diagram of the circuit breaker provided in this embodiment of the utility model;

[0045] Figure 3 This is a schematic diagram of the circuit breaker position indicating device in indicating a first position according to an embodiment of the present invention;

[0046] Figure 4 This is a schematic diagram of the circuit breaker position indicating device in indicating a second position, provided in an embodiment of the present invention.

[0047] Figure 5 This is a schematic diagram of the structure of the movable frame provided in an embodiment of this utility model;

[0048] Figure 6 This is a schematic diagram of the structure of the pivot shaft provided in this embodiment of the utility model;

[0049] Figure 7 This is a schematic diagram of the structure of the gasket provided in this embodiment of the utility model;

[0050] Figure 8 This is a schematic diagram of the structure of the bushing provided in this embodiment of the utility model;

[0051] Figure 9 This is a schematic diagram of the circuit breaker position indicator device provided in this embodiment of the utility model;

[0052] Figure 10 This is a schematic diagram of the structure of the limiting member provided in this embodiment of the utility model.

[0053] In the picture:

[0054] 10. Cabinet; 20. Circuit breaker trolley; 21. Circuit breaker body; 22. Circuit breaker chassis;

[0055] 100. Middle partition; 110. First plate; 111. Strip hole; 120. Second plate; 121. Visual window; 123. Protective plate; 124. Bending section;

[0056] 200. Mounting bracket; 210. Horizontal plate; 220. Vertical plate; 221. First through hole; 222. Hook groove;

[0057] 300. Movable frame; 310. Indicator; 311. Position marker; 320. Second rod; 330. First rod; 331. Connecting section; 3311. Second through hole; 3312. Stop surface; 332. Transmission section; 3321. Guide slope;

[0058] 400, Pivot shaft; 410, First shaft segment; 411, First through hole; 420, Second shaft segment; 421, First limiting surface; 422, Second limiting surface; 423, Second through hole; 424, Second limiting rod;

[0059] 500, gasket; 510, limiting hole;

[0060] 610. First torsional elastic element; 620. Second torsional elastic element;

[0061] 700, bushing; 710, clearance hole; 720, limit stage;

[0062] 800, limiting component; 810, mounting plate; 811, clearance opening; 820, first limiting plate; 830, second limiting plate. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0064] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0067] This embodiment provides a circuit breaker position indicator device, a circuit breaker, and a switch cabinet, wherein, as shown... Figure 1 As shown, the switch cabinet includes a cabinet 10, and a circuit breaker is installed inside the cabinet 10, such as... Figures 2-10 As shown, the circuit breaker includes a circuit breaker trolley 20 and a circuit breaker position indicator. The circuit breaker trolley 20 mainly includes a circuit breaker body 21 and a circuit breaker chassis 22. The circuit breaker body 21 is mounted on the circuit breaker chassis 22, and the circuit breaker chassis 22 is slidably mounted on the circuit breaker position indicator along a first direction. The circuit breaker position indicator can indicate the movement position of the circuit breaker chassis 22, thereby facilitating operators to understand the operating status of the circuit breaker in real time, thereby improving the safety and stability of the circuit breaker and switchgear operation.

[0068] Specifically, such as Figures 3-5 As shown, the circuit breaker position indicator includes a central partition 100, a movable frame 300, and a pivot shaft 400. The circuit breaker position indicator includes a first plate 110 and a second plate 120. The second plate 120 is disposed at the first end of the first plate 110 and forms a preset angle with the first plate 110. The first plate 110 has a strip-shaped hole 111 extending along a first direction. The second plate 120 has a viewing window 121. The circuit breaker chassis 22 is slidably connected to the first plate 110, and the circuit breaker chassis 22 slides relative to the first plate 110 along the first direction. A mounting frame 200 is disposed on the side of the first plate 110 opposite to the circuit breaker trolley 20. The movable frame 300 is pivotally connected to the mounting frame 200 via the pivot shaft 400. The first end of the movable frame 300 can be inserted through the strip hole 111 and protrude from the first plate 110. The second end of the movable frame 300 is provided with a position mark 311, and the position mark 311 is located in the visualization window 121. The projected length of the distance from the axis of the pivot shaft 400 to the first end of the movable frame 300 is L1, and the projected length of the distance from the axis of the pivot shaft 400 to the second end of the movable frame 300 is L2, where L1 < L2. When the circuit breaker trolley 20 slides along the first direction, it can press against or disengage from the first end of the movable frame 300 to make the movable frame 300 rotate, thereby moving the position mark 311 relative to the visualization window 121 in the second direction. The first direction is perpendicular to the second direction. In this embodiment, the first direction is the horizontal direction and the second direction is the vertical direction.

[0069] Specifically, when the circuit breaker trolley 20 is swung forward in the first direction, it presses against the first end of the movable frame 300, causing the movable frame 300 to rotate around the pivot shaft 400, which in turn moves the position indicator 311 upward in the visualization window 121, thus completing the switching of the position indicator 311. When the circuit breaker trolley 20 is swung out in the first direction, the movable frame 300 automatically returns to its original position under its own gravity, thus resetting the position indicator 311. Compared with the prior art, this circuit breaker position indicator device uses a simple lever principle to switch the position indicator, reducing manufacturing and assembly costs, reducing wear between parts, and improving the reliability and durability of the circuit breaker position indicator device. At the same time, through the design of L1 < L2 on the movable frame 300, the switching of the position indicator 311 is more obvious and accurate, making it easier for operators to observe the position status of the circuit breaker trolley 20 in real time, thereby improving the safety and stability of circuit breaker operation.

[0070] Optionally, such as Figures 3-5 As shown, the movable frame 300 includes an indicator 310, a second rod 320, and a first rod 330 connected in sequence. A position indicator 311 is disposed on the indicator 310. The end of the first rod 330 near the second rod 320 is pivotally connected to the mounting frame 200 via a pivot shaft 400. The projected length of the first rod 330 is L1, and the projected length of the second rod 320 is L2. At least a portion of the first rod 330 can pass through the strip hole 111 to protrude from the first plate 110. Along the direction from the second rod 320 to the first rod 330, the height of the portion of the first rod 330 protruding from the first plate 110 gradually increases. The design of the first rod 330 passing through the strip hole 111 ensures smoother movement of the first rod 330, avoids swaying and deviation of the first rod 330, reduces additional guiding components, and further reduces manufacturing costs and assembly complexity. Secondly, the design of the first rod 330 protruding from the first plate 110 with a gradually increasing height allows the circuit breaker trolley 20 to smoothly push the movable frame 300 to rotate when it is rocked forward while pressing against the first rod 330, thus improving the sensitivity and stability of position switching.

[0071] Optionally, such as Figure 5As shown, the first rod 330 includes a connecting section 331 and a transmission section 332. The first end of the connecting section 331 is connected to the second rod 320 and pivotally connected to the mounting frame 200. The connection between the connecting section 331 and the second rod 320 is provided with a first included angle α, which is located on the first side of the movable frame 300, wherein 90°≤α≤180°. The transmission section 332 is connected to the second end of the connecting section 331 and slides through the strip hole 111 on the first plate 110. The connection between the connecting section 331 and the transmission section 332 is provided with a second included angle β, which is located on the second side of the movable frame 300, wherein 90°≤β≤180°. In this embodiment, the first included angle α can be 90°, 115°, 130°, 145°, 150°, 165°, 180°, etc., and the second included angle β can be 90°, 115°, 130°, 145°, 150°, 165°, 180°, etc. The angles of the first included angle α and the second included angle β can be set according to actual needs.

[0072] In this embodiment, the setting of the first included angle α ensures angular adaptation between the second rod 320 and the connecting section 331, enabling the movable frame 300 to effectively transmit torque during rotation and enhancing the stability of the lever action. Secondly, the transmission section 332 is connected to the connecting section 331 via the second included angle β (90°≤β≤180°), allowing the transmission section 332 to smoothly convert the thrust into the rotational motion of the movable frame 300 when pressed by the circuit breaker trolley 20, improving the sensitivity and reliability of position switching. Furthermore, the setting of the first included angle α and the second included angle β allows the rotation angle of the movable frame 300 to match the travel distance of the circuit breaker trolley 20, improving the accuracy of position indication.

[0073] Optionally, such as Figure 5 As shown, the top surface of the transmission section 332 is provided with a guide slope 3321, which gradually rises along the direction from the second member 320 to the first member 330. The guide slope 3321 allows the circuit breaker trolley 20 to smoothly push the movable frame 300 to rotate along the slope when it presses against the transmission section 332 in the first direction, further improving the guiding effect and enhancing the sensitivity and smoothness of position switching. Simultaneously, the gradual rise of the guide slope 3321 along the direction from the second member 320 to the first member 330 ensures the effective conversion of thrust into rotational motion, reducing resistance and the risk of jamming during contact, thereby improving the reliability and durability of the device.

[0074] Optionally, such as Figure 4As shown, the mounting bracket 200 has two first through holes 221 facing each other, and the first rod 330 has a second through hole 3311. The pivot shaft 400 passes through the second through hole 3311 and is coaxially fixed with the first rod 330. The two ends of the pivot shaft 400 are respectively rotatably set in the corresponding first through holes 221, forming a reliable double-sided support. This not only enhances the stability of the rotation of the movable frame 300 and realizes the pivot function, but also reduces the processing and assembly difficulty of complex parts, thereby reducing manufacturing costs.

[0075] Optionally, the pivot shaft 400 includes a first shaft segment 410 and a second shaft segment 420 connected in sequence. The first shaft segment 410 and the second shaft segment 420 are rotatably disposed in two first through holes 221 respectively. The second shaft segment 420 is provided with a first limiting surface 421 in the axial direction. The inner wall of the second through hole 3311 is provided with a stop surface 3312. The second shaft segment 420 passes through the second through hole 3311. The stop surface 3312 fits with the first limiting surface 421, effectively constraining the circumferential movement of the first rod 330 on the pivot shaft 400, so that the first rod 330 and the second shaft segment 420 rotate synchronously. Furthermore, the first shaft segment 410 and the second shaft segment 420 are rotatably disposed in two first through holes 221 respectively, realizing double-end rotational support and enhancing the rotational stability of the pivot shaft 400.

[0076] In this embodiment, the second through hole 3311 is a D-shaped through hole, and the cross-section of the second shaft segment 420 is also D-shaped, ensuring the synchronous rotation of the first rod 330 and the second shaft segment 420. In other embodiments, the cross-sections of the second through hole 3311 and the second shaft segment 420 can both be flattened round to adapt to different manufacturing or usage requirements.

[0077] Optionally, such as Figure 6 As shown, the second shaft segment 420 has a second limiting surface 422 along its radial direction at one end near the first shaft segment 410. The side wall of the first rod 330 can abut against the second limiting surface 422. The second limiting surface 422 provides a positioning reference for the installation position of the first rod 330, which improves the installation efficiency and the accuracy of the position of the first rod 330. The first shaft segment 410 and the second shaft segment 420 are respectively provided with a first through hole 411 and a second through hole 423 in the radial direction. A first limiting rod is provided in the first through hole 411 and a second limiting rod 424 is provided in the second through hole 423. The first rod 330 is clamped between the first limiting rod and the second limiting rod 424. With the abutment of the second limiting surface 422 and the side wall of the first rod 330, the axial and circumferential movement of the first rod 330 on the pivot shaft 400 is effectively constrained, ensuring the synchronous rotation of the movable frame 300 and the pivot shaft 400, and improving the accuracy and stability of the position mark 311 switching.

[0078] Specifically, in this embodiment, the first through hole 411 and the second through hole 423 are respectively the first threaded hole and the second threaded hole, and the first limiting rod and the second limiting rod 424 are respectively the first screw and the second screw. The first screw is fastened to the first shaft section 410 through the first threaded hole, and the second screw is fastened to the second shaft section 420 through the second threaded hole, which facilitates the installation and disassembly of the first limiting rod and the second limiting rod 424, and improves the installation efficiency and the reliability of the connection.

[0079] In other embodiments, the first through hole 411 and the second through hole 423 can both be open holes, and the first limiting rod and the second limiting rod 424 can both be pins. The pins are interference-fitted into their corresponding open holes, which can also limit the first rod 330 in the axial direction of the pivot shaft 400, simplifying the processing technology and enhancing the connection reliability.

[0080] Optionally, such as Figure 4 and Figure 8 As shown, shims 500 are provided between the first limiting rod and the first rod 330, and between the second limiting rod 424 and the first rod 330. Each shim 500 has a limiting hole 510 with the same cross-sectional shape as the second shaft segment 420, through which the second shaft segment 420 passes. The shims 500 effectively fill the gaps between the first limiting rod, the second limiting rod 424, and the first rod 330, reducing the axial movement of the first rod 330 on the pivot shaft 400, and improving the smoothness of the rotation of the movable frame 300 and the accuracy of position indication. Furthermore, the shims 500 provide a larger contact area, effectively dispersing the forces between the first and second limiting rods 424 and the first rod 330, reducing local stress concentration, and improving the smoothness and durability of the rotation of the movable frame 300.

[0081] Optionally, a first torsional elastic element 610 is fitted onto the first shaft segment 410, with one end of the first torsional elastic element 610 hanging on the first limiting rod and the other end pressing against the mounting frame 200; a second torsional elastic element 620 is fitted onto the second shaft segment 420, with one end of the second torsional elastic element 620 hanging on the second limiting rod 424 and the other end pressing against the mounting frame 200. The first torsional elastic element 610 and the second torsional elastic element 620 provide elastic buffering when the movable frame 300 rotates, effectively absorbing the impact force generated when the circuit breaker trolley 20 is pressed against or disengaged, reducing the mechanical stress on the pivot shaft 400 and related components, thereby improving the durability and operational stability of the device. Secondly, the elastic restoring force of the torsional elastic element can assist the movable frame 300 in quickly resetting when the circuit breaker trolley 20 is disengaged, ensuring timely switching of the position indicator 311, and improving the sensitivity and reliability of the position indication.

[0082] Optionally, both the first torsional elastic element 610 and the second torsional elastic element 620 are torsion springs. The mounting bracket 200 includes a horizontal plate 210 connected to the first plate 110. Two vertical plates 220 are vertically arranged at both ends of the horizontal plate 210. Each of the two vertical plates 220 has a first through hole 221. The first shaft segment 410 and the second shaft segment 420 pass through their respective first through holes 221. Each vertical plate 220 has a hook groove 222 for hanging its corresponding torsion spring, thereby improving the stability and reliability of the torsion spring. In other embodiments, hanging holes can be opened on the vertical plates 220 for hanging the corresponding torsion springs, thereby improving the stability of the torsion springs.

[0083] Optionally, such as Figure 4 As shown, bushings 700 are fitted onto both the first shaft segment 410 and the second shaft segment 420, and the bushings 700 are rotatably disposed within their corresponding first through holes 221. The bushings 700 increase the contact buffer between the first shaft segment 410 and the second shaft segment 420 and the first through hole 221, reducing the friction between the pivot shaft 400 and the mounting bracket 200, effectively improving the smoothness and durability of rotation. Secondly, as an independent component, the bushings 700 can evenly distribute the load during rotation, reducing the wear risk of the pivot shaft 400 and the first through hole 221, thereby extending the service life of the circuit breaker position indicator device.

[0084] Optionally, such as Figure 8 As shown, the bushing 700 is provided with a clearance hole 710 for the first or second limiting rod 424 to pass through, improving installation efficiency. Furthermore, the bushing 700 is also provided with a limiting platform 720, which can abut against the mounting bracket 200. The clearance hole 710 on the bushing 700 provides a reserved channel for the installation of the first or second limiting rod 424, avoiding disassembly or adjustment of the bushing 700 during installation, simplifying the assembly steps, and thus improving installation efficiency. The limiting platform 720 allows the bushing 700 to stably abut against the mounting bracket 200, effectively limiting the axial movement of the bushing 700 within the first through hole 221, enhancing the smoothness of the pivot shaft 400's rotation and its positioning accuracy.

[0085] Optionally, the included angle between the first plate 110 and the second plate 120 is 90°, which can improve the structural strength of the partition plate while ensuring the compactness of the circuit breaker and improving space utilization efficiency. In other embodiments, the included angle between the first plate 110 and the second plate 120 can be between 85° and 100°, specifically 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, etc.

[0086] Optionally, the edge of the second plate 120 of the partition 100 is provided with a bending portion 124, which can improve the structural strength of the second plate 120, avoid deformation caused by external force, and thus improve the durability and reliability of the entire partition 100.

[0087] In this embodiment, the first plate 110 and the second plate 120 are constructed as a single unit, thereby improving the stability of the connection between the first plate 110 and the second plate 120. In other embodiments, the first plate 110 and the second plate 120 can be spliced ​​and welded together, allowing for the selection of appropriate specifications for the first plate 110 and the second plate 120 according to actual needs, thus improving the manufacturing flexibility of the partition plate 100.

[0088] Optionally, the visualization window 121 is a rectangular through-hole opened on the second plate 120, providing a wide and regular field of view, making the movement trajectory of the position indicator 311 more intuitive and clear during the switching process, and facilitating operators to quickly and accurately determine the position status of the circuit breaker trolley 20. Secondly, the simple geometry of the rectangular through-hole makes it easy to process on the second plate 120, reducing manufacturing difficulty and cost, while ensuring the regularity of the edges of the visualization window 121 and reducing visual interference caused by complex shapes.

[0089] Optionally, a transparent protective plate 123 can be used to block the rectangular through hole. The transparent protective plate 123 not only preserves the wide and clear view of the rectangular through hole, making it easy for operators to accurately judge the position status of the circuit breaker trolley 20, but also effectively prevents dust, foreign objects or moisture from entering the interior of the partition plate 100, thereby improving the reliability and durability of the circuit breaker position indicator device.

[0090] Optionally, the location marker 311 can be an adhesive label sticker with the first and second location markers arranged along the second direction. Alternatively, the first and second location markers can be directly painted or engraved onto the indicator 310 using paint or engraving. In this embodiment, according to usage requirements, the first location is the test location, marked "TEST" on the label sticker, and the second location is the service location, marked "SERVICE" on the label sticker.

[0091] Optionally, such as Figures 9-10As shown, the circuit breaker position indicator also includes a limiting member 800, which includes a mounting plate 810 and two first limiting plates 820. The mounting plate 810 is disposed on the side of the second plate 120 facing the first plate 110. The mounting plate 810 has a clearance opening 811 corresponding to the visualization window 121. The two first limiting plates 820 are respectively located on the mounting plates 810 on both sides of the visualization window 121. The indicator 310 is slidably disposed between the two first limiting plates 820 along the second direction. The two first limiting plates 820 provide guidance for the sliding of the indicator 310 along the second direction, restrict its lateral displacement, ensure the stability of the movement of the position indicator 311 within the visualization window 121, and improve the reliability of the indication.

[0092] Optionally, the limiting member 800 further includes a second limiting plate 830, which is disposed at the bottom of the mounting plate 810 and located between the two first limiting plates 820. The indicator 310 can abut against the second limiting plate 830, limiting its position in the second direction, preventing excessive movement of the indicator 310, ensuring consistency in each movement of the movable frame 300, and further improving the accuracy of the circuit breaker position indicator device. In this embodiment, the limiting member 800 is integrally bent, which can improve the manufacturing efficiency of the limiting member 800.

[0093] Specifically, the general operation process of the circuit breaker provided in this embodiment is as follows:

[0094] When the circuit breaker is in the test position, the indicator 310 at the second end of the movable frame 300 on the position indicator device will droop down onto the second limit plate 830 due to gravity and will no longer move downward. At this time, it can be seen through the visualization window 121 that it is exactly at the TEST position of the position mark 311.

[0095] As the circuit breaker trolley 20 gradually moves in, the circuit breaker chassis 22 gradually comes into contact with the portion of the first rod 330 of the movable frame 300 that protrudes from the first plate 110. The portion of the first rod 330 that protrudes from the first plate 110 gradually rises in height along the direction from the second rod 320 to the first rod 330, forming a slope. This causes the first end of the movable frame 300 to gradually be pressed down, driving the pivot shaft 400 to rotate together. At the same time, the two torsion springs (the first torsion elastic element 610 and the second torsion elastic element 620) on the pivot shaft 400 are simultaneously subjected to torque, causing the indicator 310 at the second end of the movable frame 300 to gradually move upward. The status change of the position indicator 311 can be clearly seen from the visualization window 121, gradually switching from TEST (test position) to SERVICE (service position).

[0096] Similarly, when the circuit breaker trolley 20 is swayed out of the cabinet 10, the circuit breaker chassis 22 gradually moves away from the first end of the movable frame 300. The pressure on the first end of the movable frame 300 decreases, and the second end of the movable frame 300 begins to move downward due to gravity. The two torsion springs on the pivot shaft 400 begin to release energy, the pivot shaft 400 rotates, and the first end of the movable frame 300 gradually rises. The change in the state of the position indicator 311 can be clearly seen from the visualization window 121, gradually switching from SERVICE to TEST. This back-and-forth movement achieves mechanical position indication.

[0097] The switchgear provided in this embodiment includes a cabinet 10 and the circuit breaker mentioned above. The circuit breaker is installed inside the cabinet 10. When the middle cabinet door inside the switchgear 10 is closed, as the position of the circuit breaker trolley 20 changes dynamically in the cabinet 10, the corresponding position indication (test position & service position) of the circuit breaker can be seen at the visualization window 121 set on the second panel 120, thereby improving the safety and stability of the switchgear operation.

[0098] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A circuit breaker position indicator device for indicating the movement position of a circuit breaker trolley (20), characterized in that, The circuit breaker position indicator includes: The partition (100) includes a first plate (110) and a second plate (120). The second plate (120) is disposed at the first end of the first plate (110) and forms a preset angle with the first plate (110). The first plate (110) is provided with a strip hole (111) extending in a first direction. The second plate (120) is provided with a visualization window (121). The mounting bracket (200) is disposed on the side of the first plate (110) opposite to the circuit breaker truck (20); The movable frame (300) is pivotally connected to the mounting frame (200) via a pivot shaft (400). The first end of the movable frame (300) can protrude from the first plate (110) through the strip hole (111). The second end of the movable frame (300) is provided with a position mark (311), which is located within the visualization window (121). The projected length of the distance from the axis of the pivot shaft (400) to the first end of the movable frame (300) is L1, and the projected length of the distance from the axis of the pivot shaft (400) to the second end of the movable frame (300) is L2, wherein L1 < L2. When the circuit breaker trolley (20) slides along the first direction, it can press against or disengage from the first end of the movable frame (300) to make the movable frame (300) rotate, thereby causing the position marker (311) to move relative to the visualization window (121) in the second direction, the first direction being perpendicular to the second direction.

2. The circuit breaker position indicating device according to claim 1, characterized in that, The movable frame (300) includes: Indicator (310), wherein the position mark (311) is disposed on the indicator (310); A first rod (330) and a second rod (320), one end of the second rod (320) is connected to the indicator (310), and the other end is connected to the first rod (330). The end of the first rod (330) near the second rod (320) is pivotally connected to the mounting bracket (200) via the pivot shaft (400). At least a portion of the first rod (330) can pass through the strip hole (111) to protrude from the first plate (110), and the height of the portion of the first rod (330) protruding from the first plate (110) gradually increases along the direction from the second rod (320) to the first rod (330).

3. The circuit breaker position indicating device according to claim 2, characterized in that, The first member (330) includes: A connecting segment (331) is provided at its first end, which is connected to the second rod (320) and pivotally connected to the mounting frame (200). The connection between the connecting segment (331) and the second rod (320) is provided with a first included angle α, which is located on the first side of the movable frame (300), wherein 90°≤α≤180°. The transmission section (332) is connected to the second end of the connecting section (331) and slides through the middle partition (100). The connection between the connecting section (331) and the transmission section (332) is provided with a second included angle β, which is located on the second side of the movable frame (300), wherein 90°≤β≤180°.

4. The circuit breaker position indicating device according to claim 3, characterized in that, The top surface of the transmission section (332) is provided with a guide slope (3321), which gradually rises along the direction from the second rod (320) to the first rod (330).

5. The circuit breaker position indicating device according to claim 2, characterized in that, The mounting bracket (200) has two first through holes (221) facing each other, and the first rod (330) has a second through hole (3311). The pivot shaft (400) passes through the second through hole (3311) and is coaxially fixed with the first rod (330). The two ends of the pivot shaft (400) are respectively rotatably disposed in the corresponding first through hole (221).

6. The circuit breaker position indicating device according to claim 5, characterized in that, The pivot shaft (400) includes a first shaft segment (410) and a second shaft segment (420) connected in sequence. The first shaft segment (410) and the second shaft segment (420) are respectively rotatably disposed in two first through holes (221). The second shaft segment (420) is provided with a first limiting surface (421) in the axial direction. The inner wall of the second through hole (3311) is provided with a stop surface (3312). The second shaft segment (420) passes through the second through hole (3311). The stop surface (3312) fits against the first limiting surface (421) so that the first rod (330) and the second shaft segment (420) rotate synchronously.

7. The circuit breaker position indicating device according to claim 6, characterized in that, The second shaft segment (420) has a second limiting surface (422) radially provided at one end near the first shaft segment (410), and the side wall of the first rod (330) can abut against the second limiting surface (422); The first shaft segment (410) and the second shaft segment (420) are respectively provided with a first through hole (411) and a second through hole (423) in the radial direction. A first limiting rod is provided in the first through hole (411) and a second limiting rod (424) is provided in the second through hole (423). The first rod (330) is sandwiched between the first limiting rod and the second limiting rod (424).

8. The circuit breaker position indicating device according to claim 7, characterized in that, A gasket (500) is provided between the first limiting rod and the first rod (330), and between the second limiting rod (424) and the first rod (330). The gasket (500) is provided with a limiting hole (510) with the same cross-sectional shape as the second shaft segment (420). The second shaft segment (420) passes through the limiting hole (510).

9. The circuit breaker position indicating device according to claim 7, characterized in that, A first torsional elastic element (610) is sleeved on the first shaft segment (410). One end of the first torsional elastic element (610) is hung on the first limiting rod, and the other end is pressed against the mounting bracket (200). A second torsional elastic element (620) is sleeved on the second shaft segment (420). One end of the second torsional elastic element (620) is hung on the second limiting rod (424), and the other end is pressed against the mounting bracket (200).

10. The circuit breaker position indicating device according to claim 6, characterized in that, Both the first shaft segment (410) and the second shaft segment (420) are fitted with bushings (700), and the bushings (700) are rotatably disposed in the first through hole (221) corresponding to them.

11. The circuit breaker position indicating device according to claim 2, characterized in that, The circuit breaker position indicator further includes a limiting member (800), the limiting member (800) comprising: A mounting plate (810) is disposed on the side of the second plate (120) facing the first plate (110), and the mounting plate (810) is provided with a clearance opening (811) corresponding to the visualization window (121); Two first limiting plates (820) are respectively located on the mounting plates (810) on both sides of the visualization window (121). The indicator (310) is slidably disposed between the two first limiting plates (820) along the second direction. The second limiting plate (830) is disposed at the bottom of the mounting plate (810) and located between the two first limiting plates (820). The indicator (310) can abut against the second limiting plate (830).

12. A circuit breaker, characterized in that, Includes a circuit breaker trolley (20) and a circuit breaker position indicator as described in any one of claims 1-11, wherein the circuit breaker trolley (20) can activate the circuit breaker position indicator when it slides along the first direction.

13. A switch cabinet, characterized in that, It includes a cabinet (10) and a circuit breaker as described in claim 12, the circuit breaker being disposed within the cabinet (10).

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