Operation interlocking device of electric grounding switch

Abstract

The invention discloses an electric grounding switch operation interlocking device, and belongs to the technical field of switch cabinet equipment. The device comprises a hexagonal operation shaft, and further comprises an interlocking mechanism which comprises a fixing piece and a transverse sliding plate; the driving mechanism comprises an eccentric front interlocking driving plate and an eccentric rear interlocking driving plate which are fixed on the hexagonal operation shaft; and the crank arm connecting rod mechanism comprises a crank arm, and a vertical connecting rod and a transverse connecting rod which are respectively hinged with the crank arm. When a motor of the electric grounding switch drives the hexagonal operation shaft to rotate clockwise to be switched on, the rear interlocking driving plate and the front interlocking driving plate which are installed on the hexagonal operation shaft press and drive the transverse sliding plate to slide in the direction away from the rotating axis, and the front interlocking driving plate finally abuts against and locks the transverse sliding plate, so that when the electric grounding switch is switched on, the transverse sliding plate is locked. And a vertical connecting rod of the crank arm connecting rod mechanism drives the guide rail interlocking mechanism downwards to lock the circuit breaker handcart, so that the interlocking requirement that the circuit breaker handcart cannot be pushed into a working position when the grounding switch is switched on is met.

Description

Technical Field

[0001] This invention relates to an interlocking device for operating an electric grounding switch, belonging to the technical field of switchgear equipment. Background Technology

[0002] Inside switchgear, electrically operated grounding switches are widely used for grounding operations to ensure equipment safety during maintenance and operation. Traditional electrically operated grounding switches use electrodes controlled by electrical signals to perform closing or opening actions, and are equipped with interlocking devices to prevent misoperation. Existing electrically operated grounding switch interlocking devices mainly employ a combination of mechanical and electrical methods to achieve multiple interlocking controls between the handcart position, cabinet door status, and grounding switch operation. However, electrical interlocking heavily relies on auxiliary switches and control circuits; it may fail if the control system malfunctions, and maintenance costs are high.

[0003] Therefore, it is urgent to optimize the interlocking structure of the electric grounding switch. Based on the motor and hexagonal operating shaft of the electric grounding switch, an operating interlocking device for the electric grounding switch should be designed. This device, by installing an interlocking mechanism, a drive mechanism, and a crank arm linkage mechanism on the hexagonal operating shaft driven by the motor of the electric grounding switch, can automatically interlock with the electric grounding switch, making it more reliable and safer, while retaining the advantage of prioritizing manual operation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an interlocking device for the operation of an electric grounding switch, which solves the problem of the lack of an automatic interlocking mechanism for electric grounding switches.

[0005] The technical problem to be solved by this invention is achieved by the following technical solution:

[0006] An interlocking device for operating an electric grounding switch includes a hexagonal operating shaft installed inside the switch cabinet and driven by a motor of the electric grounding switch, and further includes:

[0007] The interlocking mechanism includes a fixing member and a transverse sliding plate. The end of the hexagonal operating shaft is rotatably mounted in the fixing member. An operating hole for manually operating the hexagonal operating shaft is provided on the outer side of the fixing member. The transverse sliding plate is slidably mounted on the fixing member and the operating hole can be opened and closed by sliding.

[0008] The drive mechanism includes an eccentric front interlock drive plate and a rear interlock drive plate fixed on the hexagonal operating shaft. The transverse slide plate has a first bending baffle and a second bending baffle that are respectively subjected to rotational pressure from the front interlock drive plate and the rear interlock drive plate.

[0009] A crank arm linkage mechanism includes a crank arm, and a vertical link and a horizontal link respectively hinged to the crank arm. The crank arm is sleeved on the hexagonal operating shaft, and the other end of the horizontal link is hinged to the horizontal sliding plate. The vertical link is subjected to an upward spring tension.

[0010] Preferably, a limiting plate is fixed on the hexagonal operating shaft, and a limiting block is provided on the rotation path of the limiting plate to limit the rotation angle of the hexagonal operating shaft.

[0011] Preferably, the fixing component includes a fixing plate and a support base, the end of the hexagonal operating shaft is rotatably mounted in the support base, the support base is mounted on the inner side of the fixing plate, and the outer side of the fixing plate has an operating hole for exposing the hexagonal operating shaft.

[0012] Preferably, the support base has a stepped through hole, and the outer side of the support base has a circular groove coaxial with the stepped through hole. A compression spring is placed in the stepped through hole, and a manual operation drive disc with a hollow hole is placed in the circular groove. The hexagonal operating shaft passes through the support base, the compression spring, and the manual operation drive disc in sequence. The manual operation drive disc is pressed against a C-shaped pad fixed to the inner side of the fixing plate by the compression spring.

[0013] Preferably, a micro switch is installed on the support base. The manual operation handle is inserted into the operation hole, which overcomes the spring force and compresses the manual operation drive disk inward. When the edge of the manual operation drive disk touches the contact of the micro switch, the micro switch disconnects the motor of the electric grounding switch.

[0014] Preferably, a guide plate is installed on the inner side of the fixed plate, and a horizontal linear guide groove is provided between the guide plate and the fixed plate, so that the transverse slide is restricted to translational movement within the linear guide groove.

[0015] Preferably, the transverse sliding plate includes a base plate, a sliding plate formed by bending upward from the front side of the base plate, an L-shaped plate formed by bending vertically backward twice from one vertical edge of the sliding plate, a lever bent outward from the other vertical edge of the sliding plate towards the operating hole, and the base plate is provided with a first bending baffle and a second bending baffle that bend upward. The sliding plate is slidably engaged with the linear guide groove, the sliding plate is inserted from the opening side of the C-shaped pad, and the lever is located inside the operating hole.

[0016] Preferably, the limiting plate is composed of a large semicircle and a small semicircle arranged concentrically. The limiting plate is fixed on the hexagonal operating shaft through an internal hexagonal hole. The limiting block is arranged adjacent to the outer edge of the small semicircle and restricts the limiting plate from rotating within an angle range of 0-180°.

[0017] Preferably, the rear interlock drive plate is fixed to the hexagonal operating shaft through an internal hexagonal hole. The rear interlock drive plate has an eccentric arc portion with an outer arc shape. When the rear interlock drive plate is at 0°, the second bending baffle is closest to the rotation axis of the rear interlock drive plate. When the rear interlock drive plate starts to rotate, the outer edge of the eccentric arc portion presses the second bending baffle in a direction away from the rotation axis.

[0018] Preferably, the front interlock drive plate is fixed to the hexagonal operating shaft through an internal hexagonal hole. The front interlock drive plate has an eccentric hook-shaped portion. When the front interlock drive plate rotates to contact the first bending baffle, the hook-shaped opening of the eccentric hook-shaped portion hooks the first bending baffle and continues to press the first bending baffle away from the rotation axis.

[0019] The beneficial effects of this invention are:

[0020] 1. When the motor drives the hexagonal operating shaft of the electric grounding switch to rotate clockwise to close the circuit, the rear interlocking drive plate and the front interlocking drive plate installed on the hexagonal operating shaft press and drive the transverse sliding plate to slide away from the rotation axis. At this time, the transverse sliding plate drives the crank arm linkage mechanism to move, and the front interlocking drive plate finally presses and locks the transverse sliding plate. This achieves the interlocking requirement that the circuit breaker trolley cannot be pushed into the working position when the electric grounding switch is closed, as the vertical link of the crank arm linkage mechanism drives the guide rail interlocking mechanism downward to lock the circuit breaker trolley.

[0021] 2. When the motor driving the hexagonal operating shaft of the electric grounding switch rotates counterclockwise to open the circuit breaker, the rear interlock drive plate and the front interlock drive plate release the transverse sliding plate. At this time, the internal guide rail interlock mechanism unlocks under the action of its own spring restoring force, and the circuit breaker trolley can be pushed to the working position. At the same time, the spring tension of the guide rail interlock mechanism acts on the vertical connecting rod of the crank arm linkage mechanism, generating an upward pulling force, which is transmitted to the transverse sliding plate through the transverse connecting rod. The transverse sliding plate resets under the action of the pulling force and covers the operating hole.

[0022] 3. In addition, this electric grounding switch operation interlocking device also has the function of prioritizing manual operation of the grounding switch. When the manual operation handle is inserted into the operation hole, the handle pushes the manual operation drive disc inward, causing the compression spring in the stepped through hole to be compressed. At the same time, the edge of the manual operation drive disc touches the contact of the micro switch fixed on the support base, thereby disconnecting the motor of the electric grounding switch and prioritizing the use of the manual operation grounding switch. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the exploded structure inside the fixed plate;

[0025] Figure 3 This is an exploded structural diagram of the fixed plate facing the direction of the operating hole.

[0026] Figure 4 This is a top view of the assembly structure of the horizontal sliding plate;

[0027] Figure 5 This is a schematic diagram of the support structure;

[0028] Figure 6 A top view of the assembly structure of the hexagonal operating shaft;

[0029] Figure 7 This is a schematic diagram of the guide plate structure;

[0030] Figure 8 This is a schematic diagram of the horizontal sliding plate structure;

[0031] Figure 9 This is a top view of the structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the crank arm linkage mechanism;

[0033] Figure 11 This is a schematic diagram of the internal structure of the present invention after the fixing plate has been removed;

[0034] Figure 12 This is a schematic diagram of the structure on the back of the present invention;

[0035] Figure 13 This is a schematic diagram of the structure in the initial open state;

[0036] Figure 14 This is a schematic diagram of the structure when the front interlock drive plate captures the first bent baffle during the process of rotating clockwise from 0° to 180°.

[0037] Figure 15 A schematic diagram showing the manual and electric closing states;

[0038] Figure 16 This is a schematic diagram of the structure in which the limit plate, the front interlock drive plate, and the rear interlock drive plate are mounted on a hexagonal operating shaft.

[0039] In the picture:

[0040] 1. Hexagonal operating axis;

[0041] 2. Fixing plate; 201. Operating hole;

[0042] 3. Support base; 301. Stepped through hole; 302. Circular groove; 303. Compression spring;

[0043] 4. Horizontal sliding plate; 401. First bending baffle; 402. Second bending baffle; 403. Base plate; 404. Sliding plate; 405. L-shaped plate; 406. Paddle shifter;

[0044] 5. Manually operate the drive disk;

[0045] 6. C-shaped pad;

[0046] 7. Limit plate;

[0047] 8. Limit block;

[0048] 9. Front interlock drive board; 901. Eccentric hook-shaped part;

[0049] 10. Rear interlock drive board; 1001. Eccentric arc section;

[0050] 11. Guide plate; 1101. Linear guide groove;

[0051] 12. Claw arm;

[0052] 13. Vertical connecting rod;

[0053] 14. Lateral connecting rod;

[0054] 15. Micro switch. Detailed Implementation

[0055] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this invention, the invention will be further described below in conjunction with specific illustrations.

[0056] The terms "clockwise" and "counterclockwise" as used in this article refer to the rotation direction of the hexagonal operating shaft 1 as observed by the operator when standing facing the operating hole 201.

[0057] An electrically driven grounding switch in a switchgear cabinet is a grounding device driven by an electric actuator (usually a motor). It is mainly used to ground the power system to ensure safety during maintenance or fault conditions. The electric actuator drives the grounding switch to complete the closing or opening action, and features quick operation, remote control, and a high degree of intelligence.

[0058] like Figures 1-3 As shown, the electric grounding switch operation interlocking device includes a hexagonal operating shaft 1 installed in the switch cabinet and driven by the motor of the electric grounding switch, as well as an interlocking mechanism, a drive mechanism, and a crank arm linkage mechanism installed on the hexagonal operating shaft 1.

[0059] The guide rail interlocking mechanism (not shown in the figure) is linked to the operating interlocking device of this electric grounding switch. The circuit breaker trolley is installed in the switch cabinet via guide rails. The guide rail interlocking mechanism controls the locking of the circuit breaker trolley's position, primarily to prevent electrical accidents caused by misoperation when the circuit breaker trolley is not in a safe position. The guide rail interlocking mechanism has the function of automatically resetting and unlocking the circuit breaker trolley via a spring.

[0060] The vertical link 13 of the electric grounding switch operation interlocking device needs to move downward to overcome the spring restoring force of the guide rail interlocking mechanism, thereby driving the guide rail interlocking mechanism to lock the circuit breaker trolley.

[0061] (1) When the guide rail interlocking mechanism is not subjected to external force, the guide rail interlocking mechanism unlocks the circuit breaker trolley under the action of the spring restoring force, and the circuit breaker trolley can be pushed into the working position. At the same time, the spring restoring force pulls the vertical connecting rod 13 upward, driving the electric grounding switch operation interlocking device.

[0062] (2) When the electric grounding switch operation interlocking device drives the vertical link 13 to move downward, the vertical link 13 overcomes the spring restoring force and moves downward, driving the guide rail interlocking mechanism to lock the circuit breaker trolley, so that the circuit breaker trolley cannot be pushed into the working position to prevent danger from occurring.

[0063] Based on the above structure, the implementation of the structure of this electric grounding switch operation interlocking device will be further described in detail.

[0064] like Figures 1-4 As shown, the interlocking mechanism includes a fixing member and a horizontal sliding plate 4. The fixing member is installed on one side of the switch cabinet. The end of the hexagonal operating shaft 1 is rotatably installed inside the fixing member. An operating hole 201 for manually operating the hexagonal operating shaft 1 is provided on the outside of the fixing member. The horizontal sliding plate 4 is slidably installed on the fixing member and the operating hole 201 can be opened and closed by sliding.

[0065] The fixing components include a fixing plate 2 and a support base 3. The end of the hexagonal operating shaft 1 is rotatably mounted in the support base 3, which is installed inside the fixing plate 2. The fixing plate 2 has an operating hole 201 on its outer side that exposes the hexagonal operating shaft 1. When manual operation is required, a dedicated operating handle is used to rotate the hexagonal operating shaft 1.

[0066] like Figures 1-6As shown, a stepped through hole 301 is provided in the support base 3. The end of the hexagonal operating shaft 1 is inserted into the stepped through hole 301. A circular groove 302 coaxial with the stepped through hole 301 is provided on the outside of the support base 3. A compression spring 303 is placed in the stepped through hole 301. A manual operation drive disc 5 with a hollow hole is placed in the circular groove 302. The hexagonal operating shaft 1 passes through the support base 3, the compression spring 303 and the manual operation drive disc 5 in sequence. The manual operation drive disc 5 is pressed against the C-shaped pad 6 fixed to the inside of the fixing plate 2 by the compression spring 303. The end of the hexagonal operating shaft 1 and the manual operation drive disc 5 maintain a certain gap with the transverse sliding plate 4, so that a space is formed at the operating hole 201 that allows the transverse sliding plate 4 to be inserted, so that the transverse sliding plate 4 can slide to the inside of the operating hole 201 and close the operating hole 201.

[0067] like Figures 1-3 , Figure 16 As shown, a limiting plate 7 is fixed on the hexagonal operating shaft 1, and a limiting block 8 is installed on the rotation path of the limiting plate 7 to limit the rotation angle of the hexagonal operating shaft 1. The limiting plate 7 consists of a large semicircle and a small semicircle arranged concentrically. The limiting plate 7 is fixed to the hexagonal operating shaft 1 through an internal hexagonal hole. The limiting block 8 is set adjacent to the outer edge of the small semicircle and fixed to the support base 3. The limiting block 8 is a small boss protruding from the surface of the support base 3. The two can be a separate structure or an integral structure. The limiting block 8 restricts the rotation of the limiting plate 7 within the angle range of 0-180°.

[0068] like Figures 1-4 As shown, the drive mechanism includes an eccentric front interlock drive plate 9 and a rear interlock drive plate 10 fixed on a hexagonal operating shaft 1. The transverse slide plate 4 has a first bending baffle 401 and a second bending baffle 402, which are respectively subjected to rotational pressure from the front interlock drive plate 9 and the rear interlock drive plate 10. When the hexagonal operating shaft 1 starts rotating clockwise from 0° (electric grounding switch open state)... Figure 1 , Figure 3The rear interlock drive plate 10 first contacts and presses the second bending baffle 402, causing the transverse slide plate 4 to move away from the rotation axis. When the rear interlock drive plate 10 reaches its maximum radius, it continues to rotate until the front interlock drive plate 9 captures the first bending baffle 401, continuing to push the transverse slide plate 4 away from the rotation axis. When it rotates to 180°, the transverse slide plate 4 opens the operating hole 201, and the transverse slide plate 4 drives the guide rail interlock mechanism through the crank arm linkage mechanism to lock the circuit breaker truck, realizing the interlock requirement that the truck cannot enter the working position when the grounding switch is closed. When the motor drives the hexagonal operating shaft 1 to rotate from the open state 0° to the closed state 180°, the rear interlock drive plate 10 first drives the second bending baffle 402 of the transverse slide plate 4 to slide a certain distance before disengaging, and then the front interlock drive plate 9 on the hexagonal operating shaft 1 drives the first bending baffle 401 of the transverse slide plate 4 to continue moving until the limit plate 7 rotates to contact the bottom of the limit block 8 (small boss) on the support base 3.

[0069] like Figures 1-11 As shown, a guide plate 11 is installed on the inner side of the fixed plate 2, and a horizontal linear guide groove 1101 is provided between the guide plate 11 and the fixed plate 2. The transverse slide plate 4 is restricted to translational movement within the linear guide groove 1101. The support base 3 is fixed on the guide plate 11, and the guide plate 11 is fixed on the fixed plate 2, so that a space is formed between the support base 3 and the fixed plate 2 for the transverse slide plate 4 to slide. The transverse sliding plate 4 includes a base plate 403, a sliding plate 404 formed by bending upward from the front side of the base plate 403 (the side facing the operation hole 201 is the front side), an L-shaped plate 405 formed by bending vertically twice backward from one vertical edge of the sliding plate 404, a lever 406 bent outward from the vertical edge of the other side of the sliding plate 404 towards the operation hole 201, and the base plate 403 is provided with a first bending baffle 401 and a second bending baffle 402 that bend upward. The sliding plate 404 is slidably engaged with the linear guide groove 1101. The sliding plate 404 is inserted from the opening side of the C-shaped pad 6, and the lever 406 is located inside the operation hole 201. It is made of a single piece, with a simple structure and convenient assembly. The transverse sliding plate 4 is slidably installed through the linear guide groove 1101, which helps to improve the operational stability.

[0070] like Figure 1 , Figure 10 As shown, the crank arm linkage mechanism includes a crank arm 12, and a vertical link 13 and a horizontal link 14 respectively hinged to the crank arm 12. The crank arm 12 is sleeved on the hexagonal operating shaft 1. The other end of the horizontal link 14 is hinged to the L-shaped plate 405 of the horizontal slide plate 4. The vertical link 13 is subjected to the upward spring tension of the guide rail interlocking mechanism.

[0071] like Figures 1-3As shown, a micro switch 15 is installed on the support base 3. The manual operation handle is inserted into the operation hole 201, overcoming the elastic force of the compression spring 303 and compressing the manual operation drive disc 5 inward. When the edge of the manual operation drive disc 5 touches the contact of the micro switch 15, the micro switch 15 disconnects the motor of the electric grounding switch. By using the micro switch 15, the motor of the electric grounding switch can be disconnected during manual operation, achieving the effect of manual priority.

[0072] like Figures 1-15 As shown, the interlocking state switching is as follows:

[0073] S1. Initial tripping state (e.g.) Figure 12 , Figure 13 When the hexagonal operating shaft 1 is at the 0° starting point, the electric grounding switch is in the open state, and the drive mechanism releases the transverse sliding plate 4.

[0074] Under the restoring force of its own spring, the guide rail interlocking mechanism unlocks the circuit breaker trolley, allowing it to move to the working position. On the other hand, the spring of the guide rail interlocking mechanism pulls up the vertical link 13 of the crank arm linkage mechanism. The crank arm linkage mechanism then pulls the transverse slide plate 4 towards the operating hole 201 via the transverse link 14, thus closing the operating hole 201.

[0075] S2. Manual closing status ( Figure 14 , Figure 15 In the initial state, the horizontal slide plate 4 can be moved away by manually moving the lever 406, opening the operating hole 201 and exposing the hexagonal operating shaft 1. The operator stands facing the operating hole 201 and uses a special handle to push the manual operation drive disc 5 inward, driving the hexagonal operating shaft 1 to rotate clockwise from the initial open state of 0° to 180°, compressing the compression spring 303 in the stepped through hole 301. At the same time, the edge of the manual operation drive disc 5 touches the contact of the micro switch 15 fixed on the support base 3, thereby disconnecting the motor of the electric grounding switch. The hexagonal operating shaft 1 is then manually rotated using the handle to close the grounding switch. Simultaneously, after the horizontal slide plate 4 is moved and the operating hole 201 is opened, the crank arm 12 is pulled to rotate through the hinged horizontal connecting rod 14, thereby pulling the vertical connecting rod 13 down to the lowest position. The guide rail interlocking mechanism driven by the vertical connecting rod 13 locks the circuit breaker trolley in the working position, preventing the circuit breaker trolley from moving to the working position.

[0076] S3. Electric closing status ( Figure 14 , Figure 15 ): The motor drives the hexagonal operating shaft 1 to rotate clockwise from 0° to 180° via the electric grounding switch, and the electric grounding switch is closed.

[0077] During the rotation of the hexagonal operating shaft 1, the rear interlocking drive plate 10 first presses the second bending baffle 402 away from the rotation axis. When the rear interlocking drive plate 10 presses the second bending baffle 402 to the farthest distance, the front interlocking drive plate 9 captures the first bending baffle 401. The front interlocking drive plate 9 gradually presses the first bending baffle 401 away from the rotation axis. When the hexagonal operating shaft 1 rotates clockwise to the maximum angle of 180°, the first bending baffle 401 is pushed to the farthest distance. During this process, on the one hand, the transverse slide plate 4 slides and opens the operating hole 201, and on the other hand, the transverse connecting rod 14 pulls the crank arm 12 to rotate clockwise, driving the vertical connecting rod 13 to pull down to the lowest position. The guide rail interlocking mechanism driven by the vertical connecting rod 13 locks the circuit breaker trolley state, and the circuit breaker trolley cannot move to the working position.

[0078] By switching between the above three states, the following interlocking requirements are achieved: when the electric grounding switch is closed, the circuit breaker trolley cannot be pushed into the working position. Furthermore, this electric grounding switch operation interlocking device has the function of prioritizing manual operation of the grounding switch.

[0079] like Figure 16 As shown, in some embodiments, the rear interlock drive plate 10 is fixed to the hexagonal operating shaft 1 via an internal hexagonal hole. The rear interlock drive plate 10 has an eccentric arc portion 1001 with an outer arc shape. When the rear interlock drive plate 10 is at 0°, the second bending baffle 402 is closest to the rotation axis of the rear interlock drive plate 10. When the rear interlock drive plate 10 starts to rotate, the outer edge of the eccentric arc portion 1001 presses the second bending baffle 402 away from the rotation axis. The eccentric arc portion 1001 allows the rotation of the hexagonal operating shaft 1 to be more smoothly converted into the translational movement of the lateral sliding plate 4.

[0080] like Figure 16 As shown, in some embodiments, the front interlock drive plate 9 is fixed to the hexagonal operating shaft 1 via an internal hexagonal hole. The front interlock drive plate 9 has an eccentric hook-shaped portion 901. When the front interlock drive plate 9 rotates to contact the first bending baffle 401, the hook-shaped opening of the eccentric hook-shaped portion 901 hooks the first bending baffle 401 and continues to press the first bending baffle 401 away from the rotation axis. During the initial pushing phase of the rear interlock drive plate 10, the eccentric hook-shaped portion 901 does not block the first bending baffle 401. Only after the first bending baffle 401 passes under the eccentric hook-shaped portion 901 will the rotating eccentric hook-shaped portion 901 capture the first bending baffle 401 and continue to push the first bending baffle 401.

[0081] This device has the following advantages: reliable and stable mechanical interlocking, flexible operation, small footprint, and priority manual operation of the grounding switch. It can be widely used in various types of switchgear.

[0082] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of the invention, all of which fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An interlocking device for operating an electric grounding switch, comprising a hexagonal operating shaft installed inside the switch cabinet and driven by a motor of the electric grounding switch, characterized in that, Also includes: The interlocking mechanism includes a fixing member and a transverse sliding plate. The end of the hexagonal operating shaft is rotatably mounted in the fixing member. An operating hole for manually operating the hexagonal operating shaft is provided on the outer side of the fixing member. The transverse sliding plate is slidably mounted on the fixing member and the operating hole can be opened and closed by sliding. The drive mechanism includes an eccentric front interlock drive plate and a rear interlock drive plate fixed on the hexagonal operating shaft. The transverse slide plate has a first bending baffle and a second bending baffle that are respectively subjected to rotational pressure from the front interlock drive plate and the rear interlock drive plate. A crank arm linkage mechanism includes a crank arm, and a vertical link and a horizontal link respectively hinged to the crank arm. The crank arm is sleeved on the hexagonal operating shaft, and the other end of the horizontal link is hinged to the horizontal sliding plate.

2. The electric grounding switch operation interlocking device according to claim 1, characterized in that, A limit plate is fixed on the hexagonal operating shaft, and a limit block is provided on the rotation path of the limit plate to limit the rotation angle of the hexagonal operating shaft.

3. The electric grounding switch operation interlocking device according to claim 1, characterized in that, The fixing component includes a fixing plate and a support base. The end of the hexagonal operating shaft is rotatably mounted in the support base. The support base is installed on the inner side of the fixing plate. An operating hole is provided on the outer side of the fixing plate to expose the hexagonal operating shaft.

4. The electric grounding switch operation interlocking device according to claim 3, characterized in that, The support base has a stepped through hole, and the outer side of the support base has a circular groove coaxial with the stepped through hole. A compression spring is placed in the stepped through hole, and a manual operation drive disc with a hollow hole is placed in the circular groove. The hexagonal operating shaft passes through the support base, the compression spring and the manual operation drive disc in sequence. The manual operation drive disc is pressed against a C-shaped pad fixed to the inner side of the fixing plate by the compression spring.

5. The electric grounding switch operation interlocking device according to claim 4, characterized in that, A micro switch is installed on the support base. The manual operation handle is inserted into the operation hole, which overcomes the spring force and compresses the manual operation drive disk inward. When the edge of the manual operation drive disk touches the contact of the micro switch, the micro switch disconnects the motor of the electric grounding switch.

6. The electric grounding switch operation interlocking device according to claim 4, characterized in that, A guide plate is installed on the inner side of the fixed plate, and a horizontal linear guide groove is provided between the guide plate and the fixed plate. The transverse slide is restricted to translational movement within the linear guide groove.

7. The electric grounding switch operation interlocking device according to claim 6, characterized in that, The transverse sliding plate includes a base plate, a sliding plate formed by bending upward from the front side of the base plate, an L-shaped plate formed by bending vertically backward twice from one vertical edge of the sliding plate, a lever bent outward from the vertical edge of the other side of the sliding plate towards the operating hole, and the base plate is provided with a first bending baffle and a second bending baffle that bend upward. The sliding plate is slidably engaged with the linear guide groove. The sliding plate is inserted from the opening side of the C-shaped pad, and the lever is located inside the operating hole.

8. The electric grounding switch operation interlocking device according to claim 3, characterized in that, The limiting plate is composed of a large semicircle and a small semicircle arranged concentrically. The limiting plate is fixed on the hexagonal operating shaft through an internal hexagonal hole. The limiting block is arranged adjacent to the outer edge of the small semicircle and restricts the limiting plate from rotating within an angle range of 0-180°.

9. The electric grounding switch operation interlocking device according to claim 1, characterized in that, The rear interlock drive plate is fixed to the hexagonal operating shaft through an internal hexagonal hole. The rear interlock drive plate has an eccentric arc portion with an outer arc shape. When the rear interlock drive plate is at 0°, the second bending baffle is closest to the rotation axis of the rear interlock drive plate. When the rear interlock drive plate starts to rotate, the outer edge of the eccentric arc portion presses the second bending baffle in a direction away from the rotation axis.

10. The electric grounding switch operation interlocking device according to claim 1, characterized in that, The front interlock drive plate is fixed to the hexagonal operating shaft through an internal hexagonal hole. The front interlock drive plate has an eccentric hook-shaped part. When the front interlock drive plate rotates to contact the first bending baffle, the hook-shaped opening of the eccentric hook-shaped part hooks the first bending baffle and continues to press the first bending baffle away from the rotation axis.

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