Interlocking mechanism and switch cabinet

Abstract

The invention relates to the technical field of interlocking devices between switches, in particular to an interlocking mechanism and a switch cabinet. The interlocking mechanism comprises an interlocking shifting plate, the interlocking shifting plate is provided with a grounding avoiding opening and an isolation avoiding opening, the interlocking shifting plate has a shielding position, a first operation position and a second operation position in the left-right moving stroke, the interlocking shifting plate is in transmission connection with a pressure applying transmission assembly, and the pressure applying transmission assembly is used for rotating around a horizontal rotating shaft to be installed on the three-station mechanism. The pressing transmission assembly is provided with pressing parts located on the two sides of the horizontal rotating shaft. The device further comprises a pressing assembly, the pressing assembly is provided with a spring which provides elastic acting force towards the pressure applying part so that the pressing assembly can abut against the pressure applying part all the time, and the side, away from the pressure applying part, of the pressing assembly is provided with an interlocking plate used for shielding the circuit breaker closing buckle plate or avoiding the circuit breaker closing buckle plate. According to the interlocking mechanism, a transmission structure is designed into a split structure, so that the assembling and debugging processes are simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of interlocking devices between switches, and in particular to an interlocking mechanism and a switch cabinet. Background Art

[0002] The interlocking mechanism is a mechanical connection mechanism designed to ensure that the switchgear or components operate in a specified order or to prevent misoperation. In high-voltage switchgear, the three-position switch and the circuit breaker must operate in a specified operation sequence to ensure the safety of the operation process. The operation sequence is: the three-position switch can only be disconnected when the circuit breaker is disconnected, the circuit breaker cannot be closed when the three-position switch is disconnected, and the three-position switch must be closed first before the circuit breaker can be closed.

[0003] The Chinese invention patent application document with application publication number CN118471723A and application publication date 2024 / 08 / 09 discloses a three-position switch and circuit breaker interlocking mechanism and a switch cabinet, the interlocking mechanism includes a transversely arranged interlocking plate and a vertically arranged interlocking plate, the interlocking plate and the interlocking plate are connected by a hinged connecting rod, and also includes a positioning guide frame, on which a transverse guide structure for guiding the interlocking plate and a longitudinal guide structure for guiding the interlocking plate are provided.

[0004] The use of an articulated connecting rod for transmission in the above-mentioned interlocking mechanism has a simple structure and low manufacturing cost. However, during installation and debugging, it is necessary to calculate the length of the articulated connecting rod to ensure the relative position between the interlocking dial and the interlocking plate. At the same time, it is necessary to consider the relative position between the interlocking dial and the operating hole of the three-position switch, and between the interlocking plate and the closing buckle plate of the circuit breaker, which makes the assembly and debugging process of the interlocking mechanism relatively complicated. Summary of the invention

[0005] The purpose of the present invention is to provide an interlocking mechanism to solve the technical problem that the assembly and debugging process of the interlocking mechanism between the existing three-position switch and the circuit breaker is relatively complicated. At the same time, the purpose of the present invention is also to provide a switch cabinet to solve the technical problem that the assembly and debugging process of the interlocking mechanism in the switch cabinet is relatively complicated.

[0006] To achieve the above object, the present invention provides a technical solution of an interlocking mechanism: An interlocking mechanism comprises an interlocking paddle, the interlocking paddle having a grounding avoidance port and an isolation avoidance port respectively corresponding to the grounding operation port and the isolation operation port on the three-station operation panel, the interlocking paddle having a shielding position in which the grounding operation port and the grounding avoidance port are staggered, and the isolation operation port and the isolation avoidance port are staggered in the left and right movement stroke, a first operation position in which the grounding operation port corresponds to the grounding avoidance port and the isolation operation port and the isolation avoidance port are staggered, and a second operation position in which the grounding operation port and the grounding avoidance port are staggered and the isolation operation port and the isolation avoidance port correspond, the interlocking paddle is connected to a pressure transmission assembly for winding a pressure transmission assembly around a The horizontal rotating shaft is rotatably installed on the three-station mechanism, and the pressure transmission assembly has pressure parts on both sides of the horizontal rotating shaft; at the blocking position, the pressure parts on both sides are at the same height; when moving from the blocking position to the first operating position or the second operating position, the pressure transmission assembly rotates around the horizontal rotating shaft, and the pressure parts on both sides are one high and one low; it also includes a pressure assembly that is movably installed in the upward and downward directions, and the pressure assembly is provided with a spring that provides an elastic force toward the pressure part so that it is always in contact with the pressure part, and an interlocking plate for blocking or avoiding the circuit breaker closing buckle plate is provided on the side of the pressure assembly away from the pressure part.

[0007] Beneficial effects: The present invention provides a new interlocking mechanism, which designs the transmission structure in the interlocking mechanism into two independent parts, namely, a pressure transmission component whose upper part is connected to the interlocking plate for transmission, and a pressure component whose lower part is always in contact with the pressure component through elastic force. The pressure transmission component and the pressure component are detachable split structures, and the two interact with each other to realize the interlocking function between the three-position switch and the circuit breaker. In this structure, since the transmission structure of the interlocking mechanism is set as a split structure, it is convenient to assemble and during debugging, it is only necessary to ensure that the pressure transmission component and the pressure component are always in contact under the action of elastic force, and the circuit breaker closing buckle plate can be blocked and avoided during the up and down movement of the pressure component. The debugging process is simple and convenient.

[0008] Furthermore, the pressure transmission assembly includes a bracket mounted on a three-station mechanism and rotatable around a horizontal rotating axis, the pressure component is mounted on the bracket, the bracket has a waist-shaped pin hole extending up and down, the interlocking plate is provided with a horizontal pin inserted in the waist-shaped pin hole, and the interlocking plate and the pressure transmission assembly are connected through the horizontal pin and the interlocking plate.

[0009] Furthermore, the bracket has a pressure component mounting arm, an action side plate and a connecting plate connecting the pressure component mounting arm and the action side plate, the pressure component mounting arm and the action side plate are vertically fixed at both ends of the connecting plate and are located on the same side of the connecting plate, the action side plate and the pressure component mounting arm are respectively provided with coaxial through holes, the horizontal rotating shaft is arranged in the through holes, the horizontal rotating shaft is installed on the three-station mechanism through the front mounting plate at one end close to the action side plate, and the other end is installed on the three-station mechanism through the rear mounting plate, and a waist-shaped pin hole is arranged on the action side plate.

[0010] Furthermore, the pressure component mounting arm is arranged perpendicular to the horizontal rotation axis, and the pressure components are respectively arranged at both ends of the pressure component mounting arm.

[0011] Furthermore, the pressure-applying component is a roller.

[0012] Furthermore, a conversion plate is fixedly installed on the interlocking plate, and a dial wheel is fixedly arranged on the conversion plate. The dial wheel can slide left and right along the dial wheel groove horizontally arranged on the three-station operation panel to switch to the blocking position or the first operation position or the second operation position.

[0013] Furthermore, the pressing assembly is a T-shaped structure including a horizontal section and a vertical section, the upper horizontal section of the T-shaped pressing assembly is used to withstand the pressing force of the two pressure components, and the lower end of the lower vertical section cooperates with the circuit breaker closing plate.

[0014] Furthermore, a spring connecting pin is provided on the lower vertical section, and one end of the spring configured for the pressing assembly is connected to the spring connecting pin.

[0015] To achieve the above object, the present invention provides a technical solution of a switch cabinet: A switch cabinet comprises a switch cabinet body and an interlocking mechanism installed on the switch cabinet body, wherein the interlocking mechanism comprises an interlocking dial plate, wherein the interlocking dial plate has a grounding avoidance port and an isolation avoidance port respectively corresponding to the grounding operation port and the isolation operation port on the three-station operation panel, wherein the interlocking dial plate has a shielding position in which the grounding operation port and the grounding avoidance port are staggered, and the isolation operation port and the isolation avoidance port are staggered in the left and right movement stroke, a first operation position in which the grounding operation port corresponds to the grounding avoidance port and the isolation operation port and the isolation avoidance port are staggered, a second operation position in which the grounding operation port and the grounding avoidance port are staggered, and the isolation operation port and the isolation avoidance port correspond, and a pressure sensor is connected to the interlocking dial plate for transmission. The movable assembly, the pressure transmission assembly is used to be rotatably installed around a horizontal rotating shaft on the three-station mechanism, the pressure transmission assembly has pressure components on both sides of the horizontal rotating shaft; at the blocking position, the pressure components on both sides are at the same height; when moving from the blocking position to the first operating position or the second operating position, the pressure transmission assembly rotates around the horizontal rotating shaft, and the pressure components on both sides are one high and one low; it also includes a pressing assembly that is movably installed in the upward and downward directions, and the pressing assembly is provided with a spring that provides an elastic force toward the pressing component so that it is always in contact with the pressing component, and the side of the pressing assembly away from the pressure component is provided with an interlocking plate for blocking or avoiding the circuit breaker closing buckle plate.

[0016] Beneficial effects: The present invention provides a new switch cabinet, which makes the assembly and debugging process simple and convenient by designing the transmission structure of the interlocking mechanism on the switch cabinet as a split structure. At the same time, compared with the interlocking mechanism of hinge connecting rod transmission in the prior art, the present application does not need to perform complex calculations during the debugging process, and the upper pressure transmission component and the lower pressure component are always in contact under the action of elastic force.

[0017] Furthermore, the pressure transmission assembly includes a bracket mounted on a three-station mechanism and rotatable around a horizontal rotating axis, the pressure component is mounted on the bracket, the bracket has a waist-shaped pin hole extending up and down, the interlocking plate is provided with a horizontal pin inserted in the waist-shaped pin hole, and the interlocking plate and the pressure transmission assembly are connected through the horizontal pin and the interlocking plate.

[0018] Furthermore, the bracket has a pressure component mounting arm, an action side plate and a connecting plate connecting the pressure component mounting arm and the action side plate, the pressure component mounting arm and the action side plate are vertically fixed at both ends of the connecting plate and are located on the same side of the connecting plate, the action side plate and the pressure component mounting arm are respectively provided with coaxial through holes, the horizontal rotating shaft is arranged in the through holes, the horizontal rotating shaft is installed on the three-station mechanism through the front mounting plate at one end close to the action side plate, and the other end is installed on the three-station mechanism through the rear mounting plate, and a waist-shaped pin hole is arranged on the action side plate.

[0019] Furthermore, the pressure component mounting arm is arranged perpendicular to the horizontal rotation axis, and the pressure components are respectively arranged at both ends of the pressure component mounting arm.

[0020] Furthermore, the pressure-applying component is a roller.

[0021] Furthermore, a conversion plate is fixedly installed on the interlocking plate, and a dial wheel is fixedly arranged on the conversion plate. The dial wheel can slide left and right along the dial wheel groove horizontally arranged on the three-station operation panel to switch to the blocking position or the first operation position or the second operation position.

[0022] Furthermore, the pressing assembly is a T-shaped structure including a horizontal section and a vertical section, the upper horizontal section of the T-shaped pressing assembly is used to withstand the pressing force of the two pressure components, and the lower end of the lower vertical section cooperates with the circuit breaker closing plate.

[0023] Furthermore, a spring connecting pin is provided on the lower vertical section, and one end of the spring configured for the pressing assembly is connected to the spring connecting pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of an interlocking mechanism of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the pressure transmission assembly and the conversion plate installation; Figure 3 for Figure 2 A schematic diagram of the structure of the pressure transmission assembly and the conversion plate installation from the rear to the front perspective; Figure 4 for Figure 2 A schematic diagram of the structure of the pressure transmission assembly after removing the front and rear mounting plates and the installation of the conversion plate; Figure 5 From left to right, they are state diagrams of the circuit breaker closing interlock upper position, the circuit breaker opening interlock upper position, and the circuit breaker opening interlock lower position of the present invention; Figure 6 From left to right are diagrams showing the abutment relationship between the pressure transmission component and the pressure-releasing component in the present invention.

[0025] In the figure: 1. three-station operation panel; 2. circuit breaker frame; 3. front mounting plate; 4. rear mounting plate; 5. horizontal rotating shaft; 6. roller; 7. support plate; 8. connecting plate; 9. interlocking plate; 10. circuit breaker crank arm; 11. circuit breaker main shaft; 12. dial wheel slide groove; 13. dial wheel; 14. conversion plate; 15. bracket; 16. horizontal dial pin; 17. waist-shaped pin hole; 18. spring; 19. stud; 20. spring connecting pin; 21. connecting plate slide groove. DETAILED DESCRIPTION

[0026] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0027] The present invention is mainly a new interlocking mechanism designed for a three-position switch and a circuit breaker. The main concept is: on the basis of being able to realize the basic interlocking function, the transmission structure of the interlocking mechanism is designed to be a detachable split structure, that is, a pressure transmission component that is connected to the interlocking plate at the upper part and a pressure component that is always in contact with the pressure component at the lower part through elastic force. The two can interact with each other, thereby achieving the purpose of convenient assembly and simple and quick debugging process.

[0028] In view of the above main concept, the basic technical solution of the present invention is: An interlocking mechanism, such as Figure 1 , Figure 5 and Figure 6 As shown, it includes an interlocking dial plate (not shown in the figure), and the interlocking dial plate has a grounding avoidance port and an isolation avoidance port respectively corresponding to the grounding operation port and the isolation operation port on the three-station operation panel 1, and the grounding avoidance port and the isolation operation port are arranged in the vertical direction and are not on the same straight line, so that the grounding operation port and the grounding avoidance port, and the isolation operation port and the isolation avoidance port will not appear in a state of corresponding to each other at the same time, and the interlocking dial plate has a blocking position in which the grounding operation port and the grounding avoidance port are staggered, and the isolation operation port and the isolation avoidance port are staggered in the left and right movement stroke, a first operating position in which the grounding operation port corresponds to the grounding avoidance port, and the isolation operation port corresponds to the isolation avoidance port, and a second operating position in which the grounding operation port and the grounding avoidance port are staggered, and the isolation operation port corresponds to the isolation avoidance port. In the second operating position, the interlocking plate transmission is connected with a pressure transmission assembly, which is used to be installed on the three-station mechanism by rotating around a horizontal rotating shaft 5. The pressure transmission assembly has pressure components on both sides of the horizontal rotating shaft 5; in the blocking position, the pressure components on both sides are at the same height; when moving from the blocking position to the first operating position or the second operating position, the pressure transmission assembly rotates around the horizontal rotating shaft 5, and the pressure components on both sides are one high and one low; it also includes a pressure assembly that is installed movably and guided in the up and down directions, and the pressure assembly is provided with a spring 18 that provides an elastic force toward the pressure component so that it is always in contact with the pressure component, and an interlocking plate 9 is provided on the side of the pressure assembly away from the pressure component for blocking or avoiding the circuit breaker closing plate.

[0029] The following is further described by different embodiments: The present invention provides a better embodiment, such as Figure 2-Figure 4As shown, the pressure transmission assembly includes a bracket 15 rotatably mounted on the three-station mechanism around a horizontal rotating shaft 5, and a pressure component is mounted on the bracket 15. The bracket 15 has a waist-shaped pin hole 17 extending up and down, and a horizontal pin 16 inserted into the waist-shaped pin hole 17 is provided on the interlocking plate. The interlocking plate and the pressure transmission assembly are connected to each other through the horizontal pin 16 and the interlocking plate. In other embodiments, a rack can be provided on the interlocking plate between the interlocking plate and the pressure transmission assembly, and a gear can be provided on the pressure transmission assembly, and a corresponding transmission connection can be achieved through the gear rack; or a connecting rod mechanism can be designed between the interlocking plate and the pressure transmission assembly to achieve corresponding transmission.

[0030] The present invention provides a better embodiment, such as Figure 2-Figure 4 As shown, the bracket 15 has a pressure component mounting arm, an operating side plate, and a connecting plate connecting the pressure component mounting arm and the operating side plate, and the pressure component mounting arm and the operating side plate are vertically fixed at both ends of the connecting plate and are located on the same side of the connecting plate. In this embodiment, the pressure component mounting arm, the operating side plate, and the connecting plate are made by an integrated stamping process, so that the bracket 15 has a strong structural strength, which is convenient for ensuring that it is more stable and reliable when rotating.

[0031] The present invention provides a better embodiment, such as Figure 2-Figure 4 As shown, the action side plate and the pressure component mounting arm are respectively provided with coaxial through holes, and the horizontal shaft 5 is arranged in the through holes. The end of the horizontal shaft 5 close to the action side plate is mounted on the three-station mechanism through the front mounting plate 3, and the other end is mounted on the three-station mechanism through the rear mounting plate 4. The rear mounting plate 4 is a bending plate, one side of the bending plate is mounted on the horizontal shaft 5, and the other side is fixed to the three-station mechanism by bolts. In this embodiment, after the horizontal shaft 5 passes through the through holes on the action side plate and the pressure component mounting arm, its two ends are respectively mounted on the three-station mechanism through the mounting plates, so that the pressure transmission assembly can rotate around the horizontal shaft 5, thereby driving the action side plate to make an arc motion with the horizontal shaft 5 as the center.

[0032] The present invention provides a better embodiment, such as Figure 2-Figure 4 As shown, the pressure component mounting arm is arranged perpendicular to the horizontal rotation shaft 5, and pressure components are respectively arranged at both ends of the pressure component mounting arm. In this embodiment, the pressure component mounting arm is designed to be perpendicular to the horizontal rotation shaft 5, and pressure components are respectively arranged at both ends thereof so that when the pressure transmission assembly rotates relative to the horizontal rotation shaft 5, the lower pressing assembly can be effectively pressed, thereby realizing the interlocking function between the upper interlocking plate and the lower interlocking plate 9.

[0033] In one embodiment, the pressure member is a pressure block or a pressure plate, and the corresponding pressing effect can also be achieved by the pressure block or the pressure plate. The present invention provides a more preferred embodiment, such as Figure 2-Figure 4As shown, the pressure member is a roller 6. In this embodiment, by designing the pressure member as a roller 6, it is helpful to reduce friction during the rotation process, so as to avoid damage to the pressure member and the pressing assembly abutting against each other due to the pressing force during the rotation process, which is beneficial to improve the service life of the interlocking mechanism.

[0034] The present invention provides a better embodiment, such as Figure 2-Figure 4 As shown, a conversion plate 14 is fixedly installed on the interlocking plate, and a U-shaped groove is provided on the conversion plate 14. A horizontal pin 16 is fixed in the U-shaped groove. A dial wheel 13 is fixedly provided on the conversion plate 14, and the dial wheel 13 can slide left and right along the dial wheel groove 12 horizontally provided on the three-station operation panel 1 to switch to the blocking position or the first operation position or the second operation position. In the present embodiment, one end of the horizontal pull pin 16 is arranged in the waist-shaped slide groove 17, and the other end is fixed to the dial wheel 13 through the conversion plate 14. At the same time, an interlocking pull plate is fixedly installed on the conversion plate 14. When the dial wheel 13 slides left and right along the dial wheel slide groove 12, the conversion plate 14 drives the interlocking pull plate and the horizontal pull pin 16 to move linearly. The interlocking pull plate moves linearly so that the grounding avoidance port and the grounding operation port on it are staggered, the isolation avoidance port and the isolation operation port are staggered, or the grounding avoidance port and the grounding operation port correspond to each other, the isolation avoidance port and the isolation operation port are staggered, or the grounding avoidance port and the grounding operation port are staggered, and the isolation avoidance port and the isolation operation port correspond to each other, so as to realize the switching of the blocking position, the first operation position and the second operation position; the horizontal pull pin 16 moves linearly to drive the pressure transmission assembly to rotate relatively, so as to realize the pressure transmission assembly to press the lower pressure assembly, thereby realizing the corresponding interlocking function.

[0035] The present invention provides a better embodiment, such as Figure 1 As shown, the pressure assembly is a T-shaped structure including a horizontal section and a vertical section. The upper horizontal section of the T-shaped pressure assembly is used to withstand the pressure of the two pressure components, and the lower end of the lower vertical section cooperates with the circuit breaker closing buckle plate. Specifically, the cross beam at the top of the T-shaped pressure assembly is a support plate 7, which is used to withstand the pressure generated by the lower roller 6. The vertical beam at the bottom of the T-shaped pressure assembly is a connecting plate 8. The pressure assembly is designed as a T-shaped structure to adapt to the structure of the upper pressure transmission assembly. At the same time, the T-shaped structure increases the contact area between the abutments, making the abutment more stable and reliable. In the present application, the support plate 7 and the connecting plate 8 are designed to be detachably installed by bolts, and this structure facilitates maintenance and replacement. In other embodiments, the pressure assembly may also be a T-shaped one-piece structure.

[0036] The present invention provides a better embodiment, such as Figure 5As shown, one end of the spring 18 is fixed to the stud 19 of the circuit breaker mechanism, and the other end is fixed to the spring connecting pin 20 of the connecting plate 8. The connecting plate 8 is provided with a connecting plate slot 21 extending up and down. The stud 19 on the circuit breaker mechanism passes through the connecting plate slot 21 and guides the connecting plate. In this embodiment, when the pressure transmission assembly rotates to press the support plate 7 so that the connecting plate 8 moves downward, the interlocking plate 9 blocks the closing and fastening system of the circuit breaker mechanism so that the circuit breaker mechanism is in the open state. At the same time, when the interlock is in the lower position, the spring 18 is in a compressed state, and the elastic potential energy will be stored on the spring 18, so that the pressing assembly as a whole has a tendency to reset.

[0037] The three-position mechanism and circuit breaker mechanism mentioned in the present invention are both prior art, and the corresponding structures are not described one by one here. It should be noted that the circuit breaker mechanism includes a circuit breaker frame, on which a circuit breaker main shaft 11 is provided, on which a circuit breaker crank arm 10 is fixedly mounted, and the circuit breaker crank arm 10 rotates with the circuit breaker main shaft 11. When the end of the circuit breaker crank arm 10 is just below the connecting plate 8 of the pressing assembly, the connecting plate 8 can be supported to fall downward, so that the support plate 7 supports the upper roller 6. At this time, the pressure transmission assembly cannot rotate and tilt, the horizontal push pin 16 cannot drive the conversion plate 14 to move left and right, and the push wheel 13 cannot be operated, which can realize that the three-position operating port is inoperable.

[0038] The state of interaction of an interlocking mechanism of the present invention is as follows Figure 5 and Figure 6 As shown: When the circuit breaker mechanism is in the closed state, the end of the circuit breaker crank arm 10 presses against the connecting plate 8 so that the connecting plate 8 cannot fall downward, so that the support plate 7 presses against the upper roller 6 and the bracket 15, the pressure transmission assembly cannot rotate and tilt, the dial wheel 13 and the conversion plate 14 cannot slide left and right, the grounding operation hole and the isolation operation hole are blocked by the interlocking dial plate, and the three-position switch mechanism cannot be operated at this time, thereby realizing the function that the three-position switch mechanism cannot be operated when the circuit breaker mechanism is in the closed state.

[0039] When the circuit breaker mechanism is in the open position, the circuit breaker crank arm 10 rotates counterclockwise so that the lower part of the connecting plate 8 is not supported by the end of the circuit breaker crank arm 10, and the thumbwheel 13 can slide left and right along the thumbwheel slide groove 12, so that the pressure transmission assembly rotates around the horizontal rotating shaft 5 to form an inclined state to press the pressing assembly below, and the interlocking dial plate and the conversion plate 14 slide left and right with the thumbwheel 13 to expose the grounding operation hole or the isolation operation hole, thereby realizing the function of operating the three-position mechanism when the circuit breaker mechanism is in the open position.

[0040] When the circuit breaker mechanism is in the open position, if the thumbwheel 13 is not reset to the middle position of the thumbwheel slot 12, the pressure transmission assembly will be in a rotationally tilted state to press the pressing assembly downward, so that the pressing assembly is in the lower position, and the interlocking plate 9 on the connecting plate 8 will block the closing latching system of the circuit breaker mechanism, thereby preventing the circuit breaker mechanism from performing a closing operation.

[0041] When the circuit breaker mechanism is in the open position, no matter whether the three-position mechanism is moved into place or not, if the operating handle is not pulled out of the operating hole, the thumbwheel 13 will not be reset to the middle position of the thumbwheel slot 12, and the pressure transmission assembly will rotate and tilt to press the pressing assembly at the bottom, so that the pressing assembly is in the lower position, and the interlocking plate 9 on the connecting plate 8 will block the closing buckle system of the circuit breaker mechanism, thereby achieving the circuit breaker mechanism cannot perform the closing operation.

[0042] When the circuit breaker mechanism is in the open position, the thumbwheel 13 drives the conversion plate 14 to move left and right, so that the grounding operation hole and the isolation operation hole are exposed separately, which can realize the function of double-hole setting and single-hole independent operation, thereby effectively avoiding accidents caused by the handle being inserted into the operation hole incorrectly.

[0043] The present invention provides another embodiment of a switch cabinet suitable for the above-mentioned interlocking mechanism as follows: it includes a switch cabinet body and an interlocking mechanism installed on the switch cabinet body. The switch cabinet adopts all embodiments of the above-mentioned interlocking mechanism, and therefore has all the beneficial effects of the above-mentioned interlocking mechanism, which will not be repeated here one by one.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. An interlocking mechanism, characterized in that: The interlocking plate comprises an interlocking plate, wherein the interlocking plate has a grounding avoidance port and an isolation avoidance port respectively corresponding to the grounding operation port and the isolation operation port on the three-station operation panel, wherein the interlocking plate has a shielding position in which the grounding operation port and the grounding avoidance port are staggered, and the isolation operation port and the isolation avoidance port are staggered in the left and right movement stroke, a first operation position in which the grounding operation port corresponds to the grounding avoidance port and the isolation operation port and the isolation avoidance port are staggered, and a second operation position in which the grounding operation port and the grounding avoidance port are staggered and the isolation operation port and the isolation avoidance port correspond, and the interlocking plate is connected to a pressure transmission assembly for rotating around a horizontal shaft. The pressure transmission assembly is rotatably installed on the three-station mechanism, and has pressure parts on both sides of the horizontal rotating shaft; at the blocking position, the pressure parts on both sides are at the same height; when moving from the blocking position to the first operating position or the second operating position, the pressure transmission assembly rotates around the horizontal rotating shaft, and the pressure parts on both sides are one high and one low; it also includes a pressure assembly that is movably installed in the upward and downward directions, and the pressure assembly is provided with a spring that provides an elastic force toward the pressure part so that it is always in contact with the pressure part, and an interlocking plate for blocking or avoiding the circuit breaker closing buckle plate is provided on the side of the pressure assembly away from the pressure part.

2. The interlocking mechanism according to claim 1, characterized in that: The pressure transmission assembly includes a bracket mounted on a three-station mechanism and rotatable around a horizontal rotating axis. The pressure component is mounted on the bracket. The bracket has a waist-shaped pin hole extending up and down. The interlocking plate is provided with a horizontal pin inserted in the waist-shaped pin hole. The interlocking plate and the pressure transmission assembly are connected through the horizontal pin and the interlocking plate.

3. The interlocking mechanism according to claim 2, characterized in that: The bracket comprises a pressure component mounting arm, an action side plate and a connecting plate connecting the pressure component mounting arm and the action side plate. The pressure component mounting arm and the action side plate are vertically fixed at both ends of the connecting plate and are located on the same side of the connecting plate. The action side plate and the pressure component mounting arm are respectively provided with coaxial through holes, and the horizontal rotating shaft is arranged in the through holes. The horizontal rotating shaft is installed on the three-station mechanism through the front mounting plate at one end close to the action side plate, and is installed on the three-station mechanism through the rear mounting plate at the other end. A waist-shaped pin hole is arranged on the action side plate.

4. The interlocking mechanism according to claim 3, characterized in that: The pressure component mounting support arm is arranged perpendicularly to the horizontal rotating shaft, and the pressure components are respectively arranged at both ends of the pressure component mounting support arm.

5. The interlocking mechanism according to claim 4, characterized in that: The pressure-applying component is a roller.

6. The interlocking mechanism according to any one of claims 1 to 5, characterized in that: A conversion plate is fixedly installed on the interlocking dial plate, and a thumbwheel is fixedly arranged on the conversion plate. The thumbwheel can slide left and right along the thumbwheel slide groove horizontally arranged on the three-station operation panel to switch to the blocking position or the first operation position or the second operation position.

7. The interlocking mechanism according to any one of claims 1 to 5, characterized in that: The pressing assembly is a T-shaped structure including a horizontal section and a vertical section. The upper horizontal section of the T-shaped pressing assembly is used to withstand the pressing force of two pressure-applying components, and the lower end of the lower vertical section cooperates with the circuit breaker closing plate.

8. The interlocking mechanism according to claim 7, characterized in that: A spring connecting pin is arranged on the lower vertical section, and one end of a spring arranged in the pressing assembly is connected to the spring connecting pin.

9. A switch cabinet, comprising a switch cabinet body and an interlocking mechanism installed on the switch cabinet body, characterized in that: The structure of the interlocking mechanism is the interlocking mechanism described in any one of claims 1 to 8.

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