A vacuum circuit breaker operating mechanism

Abstract

The application relates to a vacuum circuit breaker operating mechanism and relates to the technical field of explosion-proof feeder switches. The vacuum circuit breaker operating mechanism comprises a base, a linkage and a reset part. A pressing rod and an ejection rod are slidably arranged on the base. The length direction of the ejection rod and the pressing rod is perpendicular to each other. The pressing rod and the ejection rod can reciprocally slide along the length direction of the rod. A connecting part is arranged to connect the end of the pressing rod and the ejection rod which are close to each other. When the pressing rod is pressed, the ejection rod can slide through the connecting part. When the pressing rod is stopped, the pressing rod and the ejection rod can be reset through the reset part. The pressing rod is pressed outside the shell, the ejection rod slides through the connecting part, the manual unlocking switch on the vacuum circuit breaker is triggered, the unlocking function is realized, and the convenience of operation and the safety of the operator are greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of explosion-proof feeder switches, and in particular to an operating mechanism for a vacuum circuit breaker. Background Technology

[0002] Currently, explosion-proof vacuum feeder switches play a crucial role in mining electrical systems, bearing the heavy responsibility of ensuring the safety and stability of power supply in mines. Many current mining explosion-proof vacuum feeder switches incorporate permanent magnet AC vacuum circuit breakers. This configuration offers advantages in ensuring circuit breaker performance and reliability, and can adapt to the complex and harsh working environment of mines. The permanent magnet vacuum circuit breaker acts as the moving contact, while the feeder switch has a built-in stationary contact; contact between the two constitutes conductivity. The permanent magnet vacuum circuit breaker also incorporates a vacuum tube, which contains both moving and stationary contacts.

[0003] In related technologies, a mine-use explosion-proof vacuum feeder switch mainly includes a housing and a door installed on one side of the housing. A permanent magnet vacuum circuit breaker is installed inside the housing. The permanent magnet vacuum circuit breaker includes a main body and a vacuum tube (not shown in the figure) located inside the main body. An operation panel facing the door is fixed on one vertical surface of the main body, and a manual unlocking button is provided on the other vertical surface. When the moving and stationary contacts inside the vacuum tube become stuck together, the operator can press the manual unlocking button to release the sticking. Normally, the vertical surfaces of the main body containing the operation panel and the manual unlocking button are perpendicular to each other; that is, after the permanent magnet vacuum circuit breaker is installed, the manual unlocking button faces the inner wall of the feeder switch housing.

[0004] Among the aforementioned technologies, the design of installing the manual unlock button inside the power supply switch has significant drawbacks. Because it is difficult for operators to access without opening the power supply switch housing, and in case of an emergency requiring the manual unlock button, the power supply switch housing door must be opened first, and then other tools must be used to trigger the button on the side of the main body. During this process, the power supply switch may be energized, making the operation extremely dangerous and seriously threatening the personal safety of the operators. Therefore, there is room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a vacuum circuit breaker operating mechanism that solves the problems of inconvenience and high risk of unlocking operation inside the housing in the above-mentioned related technologies.

[0006] The vacuum circuit breaker operating mechanism provided in this application adopts the following technical solution:

[0007] A vacuum circuit breaker operating mechanism includes a base, a connector, and a reset component. A pressing rod and a pushing rod are slidably mounted on the base. The length directions of the pushing rod and the pressing rod are perpendicular to each other. Both the pressing rod and the pushing rod can slide back and forth along their own length direction. The connector is used to connect the close-to-each ends of the pressing rod and the pushing rod.

[0008] The end of the pressing rod away from the connector can extend to the outside of the power supply switch housing, and the end of the ejector rod away from the connector faces the manual unlocking switch on the vacuum circuit breaker; when the pressing rod is pressed, it can drive the ejector rod to slide through the connector, and when the pressing rod is stopped, it can drive itself and the ejector rod to reset through the reset component.

[0009] By adopting the above technical solution, operators do not need to perform complex and dangerous operations inside the housing. They only need to press the pressing rod outside the housing to drive the ejector rod to slide through the connecting parts, thereby triggering the manual unlocking switch on the vacuum circuit breaker to achieve the unlocking function, which greatly improves the convenience of operation. This design not only simplifies the operation process and reduces the difficulty of operation, but also effectively reduces the time operators spend in hazardous environments, thereby improving the safety of operation.

[0010] Optionally, the connecting member is a linkage rod, and the two ends of the linkage rod are rotatably connected to the ends of the pressing rod and the ejecting rod that are close to each other.

[0011] By adopting the above technical solution, when the pressing rod is moved by force, the linkage rod can rotate smoothly with the change of the relative position of the two, efficiently transmit power, drive the ejector rod to move accurately, and make the unlocking operation respond quickly and smoothly.

[0012] Optionally, the pressing rod has a first clearance notch at the end near the linkage rod, and the ejecting rod has a second clearance notch at the end near the linkage rod.

[0013] By adopting the above technical solution, the design of the clearance notch can provide reasonable space for the connection between the linkage rod and the two, making the structural layout more compact and reasonable, and saving the overall space occupied.

[0014] Optionally, the first clearance notch has a first through hole on its inner wall, and the second clearance notch has a second through hole on its inner wall;

[0015] The two ends of the linkage are respectively fixed with a first protrusion that can be inserted into the first clearance notch and a second protrusion that can be inserted into the second clearance notch; the first protrusion is rotatably connected to the inner wall of the first clearance notch, and the second protrusion is rotatably connected to the inner wall of the second clearance notch.

[0016] By adopting the above technical solution, the design of the notch and protrusion allows for precise positioning of the linkage rod and corresponding components, enabling rapid alignment during installation and greatly improving assembly efficiency. The rotary connection method gives each component flexible motion characteristics, allowing them to rotate smoothly relative to each other and ensuring the smooth operation of the entire mechanism.

[0017] Optionally, a first bolt and a second bolt are respectively provided on the outside of both ends of the linkage rod, a first rotating hole is provided on the first protrusion, and a second rotating hole is provided on the second protrusion;

[0018] The first bolt can pass through the first through hole and then be inserted into the first rotating hole, and the second bolt can pass through the second through hole and then be inserted into the second rotating hole.

[0019] By adopting the above technical solution, this design ensures connection strength while allowing smooth rotation of the rotating holes and bolts, enabling flexible and coordinated movement of all components. Furthermore, the clear structure and convenient assembly facilitate subsequent maintenance and repair, reducing maintenance costs and time, and improving the overall operating efficiency and reliability of the equipment.

[0020] Optionally, the reset component includes a tension spring, a third bolt fixed to the base, and a fourth bolt installed on the end of the pressing rod near the linkage rod. The two ends of the tension spring are detachably fixed to the third bolt and the fourth bolt, respectively.

[0021] By adopting the above technical solution, this structural design is simple and reliable, with low cost. The elasticity of the tension spring makes the reset process smooth, reduces the impact on the components, extends the service life of the operating mechanism, and ensures the stable operation of the vacuum circuit breaker.

[0022] Optionally, the base has a first screw hole on the outer side near the pressing rod for screwing in and fixing a third bolt, and the pressing rod has a second screw hole on the outer side near the end of the linkage rod for screwing in and fixing a fourth bolt.

[0023] By adopting the above technical solution, the first and second screw holes provide precise positioning for the installation of the third and fourth bolts, ensuring accurate installation position and enabling the tension spring to be correctly connected between the base and the pressing rod, thus ensuring the effective realization of the reset function.

[0024] Optionally, a first hook and a second hook are fixed at both ends of the tension spring, the first hook can be hooked onto a third bolt, and the second hook can be hooked onto a fourth bolt.

[0025] By adopting the above technical solution, the design of the hook and fixing bolt connection is extremely convenient. When installing the tension spring, simply hook the hook directly onto the fixing bolt, greatly simplifying the installation process and improving assembly efficiency. At the same time, this connection method also facilitates disassembly; when the tension spring needs to be replaced or maintained, it can be quickly removed, reducing maintenance difficulty.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Operators do not need to perform complex and dangerous operations inside the housing. They only need to press the pressing rod outside the housing to drive the ejector rod to slide through the connecting parts, thereby triggering the manual unlocking switch on the vacuum circuit breaker to achieve the unlocking function, which greatly improves the convenience of operation. This design not only simplifies the operation process and reduces the difficulty of operation, but also effectively reduces the time operators spend in hazardous environments, thereby improving the safety of operation.

[0028] 2. The hook-and-fixing bolt design is extremely convenient. When installing the tension spring, simply hook the hook directly onto the fixing bolt, greatly simplifying the installation process and improving assembly efficiency. At the same time, this connection method also facilitates disassembly. When the tension spring needs to be replaced or maintained, it can be quickly removed, reducing maintenance difficulty. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is an exploded structural diagram illustrating the various parts of the assembly structure in the embodiments of this application;

[0032] Figure 3 This is a partial cross-sectional view of the structure of the intersection of the linkage rod, the pressing rod, and the ejecting rod in an embodiment of this application;

[0033] Figure 4 This is a partial cross-sectional view of the portion where the reset member intersects with the base and the pressing rod, as shown in the embodiment of this application.

[0034] In the diagram, 1 is the base; 11 is the first screw hole; 2 is the pressing rod; 21 is the first clearance notch; 22 is the first through hole; 23 is the second screw hole; 3 is the ejector rod; 31 is the second clearance notch; 32 is the second through hole; 4 is the connecting piece; 41 is the linkage rod; 411 is the first protrusion; 412 is the first rotating hole; 413 is the second protrusion; 414 is the second rotating hole; 42 is the first bolt; 43 is the second bolt; 5 is the reset piece; 51 is the tension spring; 511 is the first hook; 512 is the second hook; 52 is the third bolt; and 53 is the fourth bolt. Detailed Implementation

[0035] The present application will be further described in detail below with reference to all the accompanying drawings.

[0036] Example:

[0037] Reference Figure 1 A vacuum circuit breaker operating mechanism includes a base 1, a connector 4, and a reset component 5; a pressing rod 2 and a pushing rod 3 are slidably arranged on the base 1, the length directions of the two are perpendicular to each other, and both can reciprocate along their own length direction.

[0038] The connector 4 is used to connect the ends of the pressing rod 2 and the ejector rod 3 that are close to each other; the end of the pressing rod 2 away from the connector 4 can extend to the outside of the feeder switch housing, and the end of the ejector rod 3 away from the connector 4 faces the manual unlocking switch on the vacuum circuit breaker.

[0039] When the operator presses the pressing lever 2, the pressing lever 2 drives the ejector lever 3 to slide through the connecting piece 4, triggering the manual unlock button; when the pressing stops, the reset piece 5 takes effect, driving the pressing lever 2 and the ejector lever 3 to return to their initial state, ready for the next operation.

[0040] Reference Figure 2 and Figure 3 The connecting part 4 is a linkage rod 41; the end of the pressing rod 2 near the linkage rod 41 is provided with a first clearance notch 21, and the end of the ejecting rod 3 near the linkage rod 41 is provided with a second clearance notch 31.

[0041] The first clearance notch 21 and the second clearance notch 31 are provided with a first through hole 22 and a second through hole 32 on their inner walls. The two ends of the linkage rod 41 are respectively integrally formed with a first protrusion 411 that can be inserted into the first clearance notch 21 and a second protrusion 413 that can be inserted into the second clearance notch 31.

[0042] The first protrusion 411 is rotatably connected to the inner wall of the first clearance notch 21, and the second protrusion 413 is rotatably connected to the inner wall of the second clearance notch 31. This enables the two ends of the linkage rod 41 to be rotatably connected to the ends of the pressing rod 2 and the ejecting rod 3 that are close to each other. The advantage of this design is that it not only ensures the flexible and smooth rotation between the components, but also effectively disperses stress, reduces component wear, and extends the service life of the overall structure.

[0043] Reference Figure 2 and Figure 3 The outer surfaces of both ends of the linkage rod 41 are respectively provided with a first bolt 42 and a second bolt 43. The first protrusion 411 has a first rotating hole 412 and the second protrusion 413 has a second rotating hole 414. The first bolt 42 can pass through the first through hole 22 and be inserted into the first rotating hole 412, and the second bolt 43 can pass through the second through hole 32 and be inserted into the second rotating hole 414.

[0044] Furthermore, to ensure the firmness and stability of the connection, fixing nuts are respectively fitted on the first bolt 42 and the second bolt 43; this design ensures a flexible and stable rotational fit between the linkage rod 41 and the pressing rod 2 and the ejecting rod 3.

[0045] Reference Figure 2 and Figure 4 The reset component 5 includes a tension spring 51 in a stretched state, a third bolt 52 fixed on the base 1, and a fourth bolt 53 installed on the end of the pressing rod 2 near the linkage rod 41, wherein the two ends of the tension spring 51 are detachably fixed to the third bolt 52 and the fourth bolt 53 respectively.

[0046] The base 1 has a first screw hole 11 on the outer side near the pressing rod 2 for the third bolt 52 to be screwed in and fixed. The pressing rod 2 has a second screw hole 23 on the outer side near the end of the linkage rod 41 for the fourth bolt 53 to be screwed in and fixed. In addition, the two ends of the tension spring 51 are respectively fixed with a first hook ring 511 and a second hook ring 512. The first hook ring 511 can be hooked on the third bolt 52, and the second hook ring 512 can be hooked on the fourth bolt 53. When there is no pressing, the spring always remains in a stretched state.

[0047] Once the pressing stops, the elastic potential energy of the tension spring 51 is quickly released. Through the connection of the third bolt 52 and the fourth bolt 53, the pressing rod 2 is precisely driven to reset, which in turn drives the ejector rod 3 to reset, ensuring that the operating mechanism quickly returns to its initial state.

[0048] The implementation principle of this application embodiment is as follows:

[0049] When the operator presses the pressing rod 2, which extends to the outside of the feeder switch housing, the pressing rod 2 slides along its length. Since the two ends of the linkage rod 41 are rotatably connected to the pressing rod 2 and the ejector rod 3 respectively, the ejector rod 3 also slides along its length under the action of the linkage rod 41. The end of the ejector rod 3 faces the manual unlocking switch on the vacuum circuit breaker, thereby triggering the corresponding function. When the pressing stops, the tension spring 51 is in a stretched state. Under the action of the tension spring 51's own elastic force, the two ends of the tension spring 51 pull the third bolt 52 and the fourth bolt 53 respectively, thereby driving the pressing rod 2 and the ejector rod 3 to return to their initial state, preparing for the next operation.

[0050] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0051] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vacuum circuit breaker operating mechanism, characterized in that, Includes a base (1), a connector (4), and a reset component (5). The base (1) is slidably provided with a pressing rod (2) and a pushing rod (3). The pushing rod (3) and the pressing rod (2) are perpendicular to each other in their length directions. The pressing rod (2) and the pushing rod (3) can slide back and forth along their own length direction. The connector (4) is used to connect the ends of the pressing rod (2) and the pushing rod (3) that are close to each other. The end of the pressing rod (2) away from the connector (4) can extend to the outside of the power supply switch housing, and the end of the ejector rod (3) away from the connector (4) faces the manual unlocking switch on the vacuum circuit breaker; when the pressing rod (2) is pressed, it can drive the ejector rod (3) to slide through the connector (4), and when the pressing rod (2) is stopped from being pressed, it can drive itself and the ejector rod (3) to reset through the reset member (5).

2. The vacuum circuit breaker operating mechanism according to claim 1, characterized in that, The connecting member (4) is a linkage rod (41), and the two ends of the linkage rod (41) are rotatably connected to the ends of the pressing rod (2) and the ejecting rod (3) that are close to each other.

3. The vacuum circuit breaker operating mechanism according to claim 2, characterized in that, The pressing rod (2) has a first clearance notch (21) at the end near the linkage rod (41), and the ejecting rod (3) has a second clearance notch (31) at the end near the linkage rod (41).

4. The vacuum circuit breaker operating mechanism according to claim 3, characterized in that, The first clearance notch (21) has a first through hole (22) on its inner wall, and the second clearance notch (31) has a second through hole (32) on its inner wall; The two ends of the linkage rod (41) are respectively fixed with a first protrusion (411) that can be inserted into the first clearance notch (21) and a second protrusion (413) that can be inserted into the second clearance notch (31); the first protrusion (411) is rotatably connected to the inner wall of the first clearance notch (21), and the second protrusion (413) is rotatably connected to the inner wall of the second clearance notch (31).

5. The vacuum circuit breaker operating mechanism according to claim 4, characterized in that, The linkage rod (41) has a first bolt (42) and a second bolt (43) on the outside of both ends respectively. The first protrusion (411) has a first rotating hole (412) and the second protrusion (413) has a second rotating hole (414). The first bolt (42) can pass through the first through hole (22) and be inserted into the first rotating hole (412), and the second bolt (43) can pass through the second through hole (32) and be inserted into the second rotating hole (414).

6. The vacuum circuit breaker operating mechanism according to claim 1, characterized in that, The reset component (5) includes a tension spring (51), a third bolt (52) fixed on the base (1), and a fourth bolt (53) installed on the end of the pressing rod (2) near the linkage rod (41). The two ends of the tension spring (51) are detachably fixed to the third bolt (52) and the fourth bolt (53) respectively.

7. The vacuum circuit breaker operating mechanism according to claim 6, characterized in that, The base (1) has a first screw hole (11) on the outer side near the pressing rod (2) for the third bolt (52) to be screwed in and fixed, and the pressing rod (2) has a second screw hole (23) on the outer side near the end of the linkage rod (41) for the fourth bolt (53) to be screwed in and fixed.

8. The vacuum circuit breaker operating mechanism according to claim 6, characterized in that, The two ends of the tension spring (51) are respectively fixed with a first hook (511) and a second hook (512). The first hook (511) can be hooked on the third bolt (52), and the second hook (512) can be hooked on the fourth bolt (53).

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