A new three-position switch operating mechanism

Abstract

The utility model discloses a novel three position switch operating mechanism, including the front plate of rectangle, the rear side surface multiple corners of front plate all are fixedly connected with the connecting pillar of horizontal direction, the rear end fixedly connected with the back plate of same specification of multiple connecting pillars with front plate, the upper end of front plate and back plate front side surface middle part all are opened with the main shaft hole of horizontal through -going, the utility model relates to three position switch technical field. The novel three position switch operating mechanism, through setting up isolation and ground combined operation axle, the device is switched through the rotation of isolation and ground combined operation axle and is switched, and multiple interlocking linkage components are arranged between multiple structures to ensure that isolation and ground state can not be activated simultaneously, ensure the operation safety, and the overall structure of the device is simple, reduces the component redundancy, makes the mechanism simple operation reliable, the appearance volume reduces, also is more convenient maintenance operation simultaneously to improve the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of three-position switch technology, specifically a novel three-position switch operating mechanism. Background Technology

[0002] A three-position switch is a medium- and high-voltage electrical device that integrates the functions of a disconnector and a grounding switch. It is typically installed in an SF6 gas chamber with the operating mechanism located outside the chamber. It is widely used in power distribution network equipment such as GIS, PASS equipment, and XGN ring main units. It achieves switching between three unique operating positions—closing, disconnecting, and grounding—using a single switch. In the closing position, the main disconnect is closed, allowing normal current transmission. In the disconnecting position, the main disconnect is separated, creating a clearly visible break. In the grounding position, the grounding circuit is connected to release residual charge. Simultaneously, its mechanical interlocking design prevents accidental operation of the grounding switch while the main circuit is energized. It also boasts advantages such as compact structure, stable operation, and easy debugging, providing reliable safety assurance for power equipment maintenance and power grid operation.

[0003] Current three-position switches lack mechanical stability. Traditional energy storage spring assemblies rely on manual operation, and spring fatigue can lead to a decrease in rebound force, resulting in incomplete operation. Furthermore, maintenance is complex and costly. Multi-axis linkage structures contain a large number of precision components (such as connecting rods and gears), which are prone to mechanical wear or corrosion after long-term operation, requiring disassembly and maintenance. At the same time, operation poses safety risks: manual operation may lead to accidental switching of isolation / grounding states due to mechanical interlock failure, causing electric shock accidents. Interlock devices rely on physical slot positioning, and may lose their interlocking function if the machining accuracy is insufficient or the components are deformed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel three-position switch operating mechanism, which solves the problems of insufficient mechanical stability, complex maintenance, and safety risks associated with the operation of current three-position switches.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a novel three-position switch operating mechanism, comprising a rectangular front plate, wherein connecting pillars are horizontally fixedly connected to multiple corners of the rear surface of the front plate, and a rear plate of the same specifications as the front plate is fixedly connected to the rear ends of the multiple connecting pillars. Both the front plate and the rear plate have a main shaft hole that extends horizontally through the upper part of the middle of the front side surface. A main shaft is rotatably connected between the two main shaft holes. A secondary shaft hole is also extended horizontally through the lower part of the front side surface of both the front plate and the rear plate, located on both sides of the main shaft hole. An isolation connection and a ground connection and a connection operation shaft are respectively rotatably connected between the two secondary shaft holes on the same side. The front end of the spindle extends to the front side of the front plate. A circular switch drive component that is not on the same axis as the front end of the spindle is fixedly connected to the front end surface of the spindle. An isolation closing position switch and a grounding closing position switch are fixedly connected to the front side surface of the front plate on both sides of the switch drive component, respectively.

[0006] Furthermore, two isolation and separation drive plates are fixedly connected to the front of the outer surface of the isolation and separation operation shaft. An isolation and separation drive shaft with its rear end passing through the rear surface of the rear isolation and separation drive plate and extending rearward is laterally fixedly connected to the upper part of the rear side surface of the front isolation and separation drive plate. An isolation and separation driven plate is rotatably connected to the rear of the outer surface of the isolation and separation operation shaft. A first slot adapted to the isolation and separation drive shaft is opened on the upper outer side of the isolation and separation driven plate.

[0007] Furthermore, two grounding connection / disconnection drive plates are fixedly connected to the front of the outer surface of the grounding connection / disconnection operation shaft. A grounding connection / disconnection drive shaft with its rear end passing through the rear surface of the rear grounding connection / disconnection drive plate and extending rearward is horizontally fixedly connected to the upper part of the rear side surface of the front grounding connection / disconnection drive plate. A grounding connection / disconnection driven plate is rotatably connected to the rear of the outer surface of the grounding connection / disconnection operation shaft. A second slot adapted to the grounding connection / disconnection drive shaft is opened on the upper outer side of the grounding connection / disconnection driven plate.

[0008] Furthermore, spring top posts are laterally fixedly connected to the bottom ends of the two isolation and separation drive plates and the bottom of the two grounding and separation drive plates. Spring fixing seats are hinged to the outer surfaces of the two spring top posts, and springs are fixedly connected between the two spring fixing seats.

[0009] Furthermore, a connecting plate is fixedly connected to the rear part of the outer surface of the main shaft, and a horizontal shaft is rotatably connected to the bottom end of the connecting plate. A first connecting rod and a second connecting rod are rotatably connected to the outer surface of the horizontal shaft. The other ends of the first connecting rod and the second connecting rod are respectively hinged to the top ends of the isolation connecting / disconnecting driven plate and the ground connecting / disconnecting driven plate.

[0010] Furthermore, the outer surfaces of the isolation and connection operation shaft and the grounding and connection operation shaft, located at the front part of the front plate, are respectively fixedly connected to the isolation and connection interlocking cam and the grounding and connection interlocking cam. A sliding sleeve is fixedly connected in the middle of the front side surface of the front plate, between the isolation and connection interlocking cam and the grounding and connection interlocking cam. The sliding sleeve is laterally slidably connected to the isolation interlocking plate and the grounding interlocking plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This novel three-position switch operating mechanism, by setting isolation and grounding operation shafts, switches positions by controlling the rotation of the isolation and grounding operation shafts. Furthermore, multiple interlocking linkage components are set between multiple structures to ensure that the isolation and grounding states cannot be activated simultaneously, thus ensuring operational safety. In addition, the overall structure of the device is simple, reducing component redundancy, making the mechanism simpler, more reliable, and smaller in size, while also making maintenance more convenient, thereby improving the practicality of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a top view of the structure of this utility model.

[0013] In the diagram: 1-Front plate, 2-Isolation and opening / closing operating shaft, 3-Isolation and opening / closing drive plate, 4-Isolation and opening / closing drive shaft, 5-Spring fixing seat, 6-Grounding and opening / closing operating shaft, 7-Grounding and opening / closing drive plate, 8-Grounding and opening / closing drive shaft, 9-Spring top column, 10-Spring, 11-Isolation closing position switch, 12-Grounding closing position switch, 13-Top column, 14-Top column spring, 15-Switch driving component, 16-End plate, 17-Sliding sleeve, 18-Isolation interlock plate, 19-Grounding interlock plate, 20-Isolation and opening / closing interlock cam, 21-Grounding and opening / closing interlock cam, 22-Rear plate, 23-Connecting support column, 24-Isolation and opening driven plate, 25-Grounding and opening driven plate, 26-Main shaft, 27-Connecting shaft plate, 28-First connecting rod, 29-Second connecting rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3 This utility model provides a technical solution: a novel three-position switch operating mechanism, comprising a rectangular front plate 1, with connecting pillars 23 horizontally fixedly connected to multiple corners of the rear surface of the front plate 1, and a rear plate 22 of the same specifications as the front plate 1 fixedly connected to the rear ends of the multiple connecting pillars 23. Both the front plate 1 and the rear plate 22 have a main shaft hole that runs horizontally through the upper part of the middle of the front side surface. A main shaft 26 is rotatably connected between the two main shaft holes. Both the front plate 1 and the rear plate 22 have a secondary shaft hole that runs horizontally through the lower part of the front side surface and on both sides of the main shaft hole. An isolation connection and disconnection operation shaft 2 and a grounding connection and disconnection operation shaft 6 are rotatably connected between the two secondary shaft holes on the same side, respectively. The front end of the spindle 26 extends to the front side of the front plate 1. A circular switch drive 15, which is not on the same axis as the front end of the spindle 26, is fixedly connected to the front surface of the front plate 1 and on both sides of the switch drive 15. An isolation closing position switch 11 and a grounding closing position switch 12 are fixedly connected to the front surface of the front plate 1 and on both sides of the switch drive 15, respectively.

[0016] The front end of the switch driver 15 is fixedly connected to an end piece 16, and the front surface of the front plate 1 and the rear part of the switch driver 15 are laterally fixedly connected to a top post 13. A top post spring 14 is provided between the top post 13 and the switch driver 15.

[0017] When the switch is in the ON state, the protruding part of the switch drive unit 15 at the front end of the spindle 26 is directly below. At this time, the switch drive unit 15 is not in contact with the isolation closing position switch 11 or the ground closing position switch 12. The switch drive unit 15 can be driven to rotate by controlling the rotation of the spindle 26. Since it is eccentric to the spindle 26, its rotation is eccentric. The protruding part will then contact the isolation closing position switch 11 or the ground closing position switch 12, thereby changing the working position.

[0018] Two isolation and separation drive plates 3 are fixedly connected to the front of the outer surface of the isolation and separation operation shaft 2. An isolation and separation drive shaft 4, which extends rearward through the rear surface of the rear isolation and separation drive plate 3, is horizontally fixedly connected to the upper part of the rear side surface of the front isolation and separation drive plate 3. An isolation and separation driven plate 24 is rotatably connected to the rear of the outer surface of the isolation and separation operation shaft 2. A first slot adapted to the isolation and separation drive shaft 4 is opened on the upper outer side of the isolation and separation driven plate 24.

[0019] Two grounding and connecting operation shafts 6 are fixedly connected to the front of the outer surface. A grounding and connecting drive shaft 8 is laterally fixed to the upper part of the rear surface of the front grounding and connecting drive shaft 7, which extends rearward through the rear surface of the rear grounding and connecting drive shaft 7. A grounding and connecting driven plate 25 is rotatably connected to the rear of the outer surface of the grounding and connecting operation shaft 6. A second slot adapted to the grounding and connecting drive shaft 8 is opened on the upper part of the outer side of the grounding and connecting driven plate 25.

[0020] Spring top posts 9 are horizontally fixedly connected to the bottom ends of the two isolation and separation drive plates 3 and the bottom ends of the two grounding and separation drive plates 7. Spring fixing seats 5 are hinged to the outer surfaces of the two spring top posts 9, and springs 10 are fixedly connected between the two spring fixing seats 5.

[0021] A connecting plate 27 is fixedly connected to the rear part of the outer surface of the main shaft 26. A horizontal shaft is rotatably connected to the bottom end of the connecting plate 27. A first connecting rod 28 and a second connecting rod 29 are rotatably connected to the outer surface of the horizontal shaft. The other ends of the first connecting rod 28 and the second connecting rod 29 are respectively hinged to the top ends of the isolation connecting / disconnecting driven plate 24 and the ground connecting / disconnecting driven plate 25.

[0022] The outer surfaces of the isolation and opening operation shaft 2 and the grounding and opening operation shaft 6, located at the front part of the front plate 1, are respectively fixedly connected to the isolation and opening interlock cam 20 and the grounding and opening interlock cam 21. The middle of the front side surface of the front plate 1, located between the isolation and opening interlock cam 20 and the grounding and opening interlock cam 21, is fixedly connected to the sliding sleeve 17. The sliding sleeve 17 is laterally slidably connected to the isolation interlock plate 18 and the grounding interlock plate 19.

[0023] When the workstation needs to be adjusted, the isolation engagement / disengagement interlocking cam 20 or the ground engagement / disengagement interlocking cam 21 can be rotated. When either rotates, it will drive the isolation engagement / disengagement operating shaft 2 or the ground engagement / disengagement operating shaft 6, which are fixedly connected to them, to rotate respectively. When the isolation engagement / disengagement operating shaft 2 rotates, the isolation engagement / disengagement drive plate 3 on its outer surface will rotate synchronously, and the isolation engagement / disengagement drive shaft 4 on it will move synchronously. After the isolation engagement / disengagement drive shaft 4 moves into the first slot, it drives the isolation engagement / disengagement driven plate 24 to move. The first connecting rod 28 on it will then drive the connecting shaft plate 27 to move, thereby driving the main shaft 26 to rotate, thus achieving the workstation adjustment function. The same principle applies when rotating the ground engagement / disengagement interlocking cam 20. The main shaft 26 rotates by moving the grounding and connecting driven plate 25. Since both the isolation and connecting driven plate 24 and the grounding and connecting driven plate 25 are hinged to the connecting plate 27, the other shaft will also move synchronously in the opposite direction when one shaft is adjusted. Then, the isolation interlocking plate 18 and the grounding interlocking plate 19 and the spring 10 structure realize multiple mechanical interlocking effects, thereby ensuring that the isolation and grounding states cannot be activated at the same time, ensuring operational safety. In addition, the overall structure of the device is simple, reducing component redundancy, simplifying the mechanism, making operation reliable, reducing the size, and making maintenance more convenient, thereby improving the practicality of the device.

[0024] During operation, the device switches work positions by controlling the rotation of the isolation and grounding operation shafts 2 and 6. Multiple interlocking linkage components are set between the various structures to ensure that the isolation and grounding states cannot be activated simultaneously, thus ensuring operational safety. Furthermore, the overall structure of the device is simple, reducing component redundancy, which simplifies the mechanism, makes operation reliable, reduces the size, and makes maintenance easier, thereby improving the practicality of the device.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel three-position switch operating mechanism, characterized in that: The front plate (1) is rectangular, and connecting pillars (23) are fixedly connected laterally at multiple corners of the rear surface of the front plate (1). The rear ends of the multiple connecting pillars (23) are fixedly connected to a rear plate (22) of the same specification as the front plate (1). Both the front plate (1) and the rear plate (22) have a main shaft hole that is laterally through the upper part of the middle of the front surface. A main shaft (26) is laterally rotatably connected between the two main shaft holes. Both the front plate (1) and the rear plate (22) have a secondary shaft hole that is laterally through the lower part of the front surface and the two sides of the main shaft hole. An isolation and separation operation shaft (2) and a grounding and separation operation shaft (6) are laterally rotatably connected between the two secondary shaft holes on the same side. The front end of the main shaft (26) extends to the front side of the front plate (1). A circular switch drive (15) that is not on the same axis as the front end of the main shaft (26) is fixedly connected. An isolation closing position switch (11) and a grounding closing position switch (12) are fixedly connected to the front side surface of the front plate (1) and on both sides of the switch drive (15), respectively.

2. The novel three-position switch operating mechanism according to claim 1, characterized in that: Two isolation and separation drive plates (3) are fixedly connected to the front of the outer surface of the isolation and separation operation shaft (2). An isolation and separation drive shaft (4) that extends backward through the rear side surface of the front isolation and separation drive plate (3) is fixedly connected laterally to the upper part of the rear side surface of the front isolation and separation drive plate (3). An isolation and separation driven plate (24) is rotatably connected to the rear of the outer surface of the isolation and separation operation shaft (2). A first slot adapted to the isolation and separation drive shaft (4) is opened on the upper outer side of the isolation and separation driven plate (24).

3. The novel three-position switch operating mechanism according to claim 2, characterized in that: Two grounding and switching operation shafts (6) are fixedly connected to the front of the outer surface. The upper part of the rear surface of the front grounding and switching operation shaft (7) is laterally fixedly connected to the rear end of the rear surface of the front grounding and switching operation shaft (7), which extends rearward through the rear surface of the rear grounding and switching operation shaft (7). The rear part of the outer surface of the grounding and switching operation shaft (6) is rotatably connected to a grounding and switching driven piece (25). The upper part of the outer side of the grounding and switching driven piece (25) is provided with a second slot that is adapted to the grounding and switching operation shaft (8).

4. The novel three-position switch operating mechanism according to claim 3, characterized in that: Spring top posts (9) are horizontally fixedly connected to the bottom ends of the two isolation and separation drive plates (3) and the bottom of the two grounding and separation drive plates (7). Spring fixing seats (5) are hinged to the outer surfaces of the two spring top posts (9). Springs (10) are fixedly connected between the two spring fixing seats (5).

5. The novel three-position switch operating mechanism according to claim 3, characterized in that: A connecting plate (27) is fixedly connected to the rear part of the outer surface of the main shaft (26). A horizontal shaft is rotatably connected to the bottom end of the connecting plate (27). A first connecting rod (28) and a second connecting rod (29) are rotatably connected to the outer surface of the horizontal shaft. The other ends of the first connecting rod (28) and the second connecting rod (29) are respectively hinged to the top ends of the isolation connecting / disconnecting driven plate (24) and the ground connecting / disconnecting driven plate (25).

6. The novel three-position switch operating mechanism according to claim 3, characterized in that: The outer surfaces of the isolation and opening operation shaft (2) and the grounding and opening operation shaft (6) and the front part of the front plate (1) are respectively fixedly connected to the isolation and opening interlock cam (20) and the grounding and opening interlock cam (21). The middle part of the front surface of the front plate (1) and the space between the isolation and opening interlock cam (20) and the grounding and opening interlock cam (21) are fixedly connected to the sliding sleeve (17). The sliding sleeve (17) is laterally slidably connected to the isolation interlock plate (18) and the grounding interlock plate (19).

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