Grounding switch operation switching mechanism and grounding switch

Abstract

The invention provides a grounding switch operation switching mechanism and a grounding switch, and belongs to the field of switch cabinets. The grounding switch operation switching mechanism comprises an operation shaft and a handle, the handle is provided with a rotation stopping structure which is used for being connected with the end of the operation shaft in an inserted mode and matched with the end of the operation shaft in a rotation stopping mode, the operation shaft is provided with a blocking edge and a pressing plate which is used for triggering the control switch to enable an electric operation system of the grounding switch to be powered off, and the pressing plate is provided with a center hole. The pressing plate sleeves the operation shaft through the central hole and can slide along the operation shaft, an elastic piece is arranged between the blocking edge and the pressing plate, at least one supporting leg is fixed to the side, away from the elastic piece, of the pressing plate and located outside the operation shaft, and the handle is provided with an abutting part abutting against the end of the supporting leg. The grounding switch comprises the grounding switch operation switching mechanism. Compared with the prior art, the structure is simple, assembling is convenient, and the assembling efficiency is high.

Description

Technical Field

[0001] The invention belongs to the field of switch cabinets, and in particular relates to a grounding switch operation switching mechanism and a grounding switch. Background Art

[0002] The grounding switch is an important component in the high-voltage switchgear. There are strict operating procedures for the grounding switch in the daily operation and maintenance of the switchgear. The grounding switch has gradually become both manually and electrically operable. In many existing switchgears, the grounding switch can be manually operated with an operating handle by rotating the grounding switch operating shaft on the side panel of the switchgear, or it can be electrically operated remotely through an intelligent control device. There is no interlocking between the two operating modes, and there are safety hazards in the operation process, which cannot meet the safety and reliability requirements of electrical equipment.

[0003] In order to solve the above technical problems, the Chinese invention patent with the existing authorization announcement number CN104779100B and the authorization announcement date of March 15, 2017 discloses an earthing switch operation interlocking mechanism for a switch cabinet, including an operating handle, a B pin column is installed in the operating handle, a grounding switch operation shaft is installed on the side panel of the switch cabinet, a spring baffle, a spring, and a U-shaped card plate are sequentially sleeved on the shaft, a bolt passes through the U-shaped card plate and the axial elliptical hole on the shaft, an A pin column is installed in the hole on the end face of the earthing switch operation shaft, the A pin column is connected to the bolt, a mounting plate is installed on the side panel of the switch cabinet, an auxiliary switch, a pressure plate, and a locking electromagnet are installed on the mounting plate, a reset tension spring is connected between the pressure plate and the mounting plate, two ends of the pressure plate are pressed on the auxiliary switch and the U-shaped card plate, two ends of the locking electromagnet power line are connected to the locking electromagnet and the intelligent control device, and two ends of the auxiliary switch signal line are connected to the auxiliary switch and the intelligent control device.

[0004] The above technical solution can form a manual and electric operation interlock, so that manual and electric operation cannot be performed at the same time. However, the above technical solution requires a hole to be opened in the center of the grounding switch operating shaft to install the A pin, and the A pin needs to be connected to the bolt on the U-shaped card plate, which makes the assembly operation inconvenient. Summary of the invention

[0005] One of the purposes of the present invention is to provide a grounding switch operation switching mechanism to solve the technical problem of inconvenient assembly and operation of the grounding switch operation interlocking mechanism in the prior art.

[0006] Another object of the present invention is to provide a grounding switch to solve the above technical problem.

[0007] To achieve the above-mentioned purpose, the technical solution of the grounding switch operation switching mechanism provided by the present invention is:

[0008] A grounding switch operating switching mechanism comprises an operating shaft and a handle, wherein the handle is provided with a rotation-stopping structure for plugging into and cooperating with the end of the operating shaft for rotation-stopping, the operating shaft is provided with a stop edge and a pressure plate for triggering a control switch to cut off the power of an electric operating system of the grounding switch, a center hole is opened on the pressure plate, the pressure plate is sleeved on the operating shaft through the center hole and can slide along the operating shaft, an elastic member is provided between the stop edge and the pressure plate, at least one leg is fixed to a side of the pressure plate away from the elastic member, the leg is located outside the operating shaft, and the handle has an abutment portion abutting against the end of the leg.

[0009] The beneficial effect is that the above technical solution is a further improvement on the prior art. In the process of installing the handle onto the operating shaft, the abutment portion on the handle will abut against the leg and push the leg, causing the pressure plate to move in the direction close to the stop edge. During the movement of the stop edge, the control switch can be triggered to cut off the power to the electric operating system, thereby switching the operating mode to manual operation. The operator can complete the opening and closing operations of the grounding switch by turning the handle. The above technical solution can conveniently switch and interlock between manual and electric operations, and compared with the prior art, the legs of the above technical solution are outside the operating shaft, and the legs can be directly installed while installing the pressure plate, which is convenient for assembly operation.

[0010] As a further improvement, an accessory is provided between the pressure plate and the handle to cooperate with the operating shaft to prevent rotation, and an avoidance groove or avoidance hole is provided on the accessory for the support leg to pass through.

[0011] The beneficial effect is that during installation, the outrigger can pass through the avoidance groove or the avoidance hole, which does not affect the transmission function of the outrigger and the normal operation of various accessories.

[0012] As a further improvement, a mounting hole for being sleeved onto the operating shaft is opened in the middle of the accessory, at least one anti-rotation mating surface is formed on the outer side wall of the operating shaft, and the contour of the mounting hole includes a straight edge that cooperates with the anti-rotation mating surface.

[0013] The beneficial effect is that the straight edge on the mounting hole is matched with the anti-rotation matching surface to form an anti-rotation matching between the accessory and the operating shaft, which is convenient for the installation of the accessory and the realization of anti-rotation.

[0014] As a further improvement, at least one of the legs is fitted with a rotation-stopping mating surface, and the contour of the mounting hole also includes a transition edge connected to the straight edge, and the transition edge cooperates with the leg to form the avoidance groove.

[0015] The beneficial effect is that after the leg is fitted with the anti-rotation mating surface, the leg can pass through the avoidance groove formed by the transition edge of the mounting hole, and there is no need to separately open a hole for the leg to pass through on the accessory, which can facilitate the processing of the accessory. On the other hand, the side of the leg facing the operating shaft is provided with a limiting support by the operating shaft, which prevents the leg from being bent due to a large pressure, thereby improving the stability of the leg.

[0016] As a further improvement, at least part of the operating shaft is a hexagonal prism structure with six anti-rotation mating surfaces, the number of the legs is three, the three legs are fitted with three non-adjacent anti-rotation mating surfaces, there are three straight edges and three transition edges, and the transition edge is connected between two adjacent straight edges.

[0017] The beneficial effect is that the three legs have a higher stability in transmitting thrust.

[0018] As a further improvement, the contour of the center hole includes a rotation-stopping edge that cooperates with the rotation-stopping mating surface, and the mating plane of the leg that fits with the rotation-stopping mating surface is flush with the rotation-stopping edge.

[0019] The beneficial effects are: the pressing plate can be rotated together with the operating shaft, and the supporting legs can be closely fitted with the operating shaft, which is convenient for assembly operation.

[0020] As a further improvement, the cross-sectional area of ​​the end of the leg away from the pressure plate is smaller than the cross-sectional area of ​​the end of the leg close to the pressure plate.

[0021] The beneficial effect is that the end of the leg away from the pressure plate is smaller, which can facilitate the leg to pass into the corresponding avoidance groove on the accessory, reducing the difficulty of assembling the accessory.

[0022] As a further improvement, at least one anti-rotation fitting surface is formed on the outer wall of the operating shaft, the contour of the center hole includes an anti-rotation edge that cooperates with the anti-rotation fitting surface, and at least one of the legs is in contact with a anti-rotation fitting surface.

[0023] The beneficial effect is that in the above technical solution, the anti-rotation edge of the center hole can cooperate with the corresponding anti-rotation matching surface, so that the pressure plate and the operating shaft can rotate synchronously. The legs fit with the anti-rotation matching surface, so that the legs can be supported by the anti-rotation matching surface, thereby improving the stability of the legs.

[0024] As a further improvement, the leg that fits with the anti-rotation matching surface has a fitting plane, and the fitting plane is flush with the anti-rotation edge.

[0025] The beneficial effect is that after the fitting plane of the supporting leg fits with the anti-rotation fitting surface, the anti-rotation fitting strength between the pressing plate and the operating shaft can be improved.

[0026] To achieve the above object, the technical solution of the grounding switch provided by the present invention is:

[0027] A grounding switch comprises a grounding switch operating switching mechanism, wherein the grounding switch operating mechanism comprises an operating shaft and a handle, the handle is provided with a rotation-stopping structure for plugging and cooperating with the end of the operating shaft, the operating shaft is provided with a stop edge and a pressure plate for triggering a control switch to cut off the power of an electric operating system of the grounding switch, a center hole is opened on the pressure plate, the pressure plate is sleeved on the operating shaft through the center hole and can slide along the operating shaft, an elastic member is provided between the stop edge and the pressure plate, at least one leg is fixed to a side of the pressure plate away from the elastic member, the leg is located outside the operating shaft, and the handle has an abutment portion abutting against the end of the leg.

[0028] The beneficial effect is that the above technical solution is a further improvement of the prior art. In the process of installing the handle on the operating shaft, the abutment portion on the handle will abut against the leg and push the leg, so that the pressure plate moves in the direction close to the stop edge. During the movement of the stop edge, the control switch can be triggered to cut off the power of the electric operating system, thereby switching the operating mode to manual operation. The operator can complete the opening and closing operation of the grounding switch by turning the handle. When assembling the grounding switch operating mechanism, compared with the prior art, the legs of the above technical solution are outside the operating shaft, and the legs can be directly installed while installing the pressure plate, which is convenient for assembly operation.

[0029] As a further improvement, an accessory is provided between the pressure plate and the handle to cooperate with the operating shaft to prevent rotation, and an avoidance groove or avoidance hole is provided on the accessory for the support leg to pass through.

[0030] The beneficial effect is that during installation, the outrigger can pass through the avoidance groove or the avoidance hole, which does not affect the transmission function of the outrigger and the normal operation of various accessories.

[0031] As a further improvement, a mounting hole for being sleeved onto the operating shaft is opened in the middle of the accessory, at least one anti-rotation mating surface is formed on the outer side wall of the operating shaft, and the contour of the mounting hole includes a straight edge that cooperates with the anti-rotation mating surface.

[0032] The beneficial effect is that the straight edge on the mounting hole is matched with the anti-rotation matching surface to form an anti-rotation matching between the accessory and the operating shaft, which is convenient for the installation of the accessory and the realization of anti-rotation.

[0033] As a further improvement, at least one of the legs is fitted with a rotation-stopping mating surface, and the contour of the mounting hole also includes a transition edge connected to the straight edge, and the transition edge cooperates with the leg to form the avoidance groove.

[0034] The beneficial effect is that after the leg is fitted with the anti-rotation mating surface, the leg can pass through the avoidance groove formed by the transition edge of the mounting hole, and there is no need to separately open a hole for the leg to pass through on the accessory, which can facilitate the processing of the accessory. On the other hand, the side of the leg facing the operating shaft is provided with a limiting support by the operating shaft, which prevents the leg from being bent due to a large pressure, thereby improving the stability of the leg.

[0035] As a further improvement, at least part of the operating shaft is a hexagonal prism structure with six anti-rotation mating surfaces, the number of the legs is three, the three legs are fitted with three non-adjacent anti-rotation mating surfaces, there are three straight edges and three transition edges, and the transition edge is connected between two adjacent straight edges.

[0036] The beneficial effect is that the three legs have a higher stability in transmitting thrust.

[0037] As a further improvement, the contour of the center hole includes a rotation-stopping edge that cooperates with the rotation-stopping mating surface, and the mating plane of the leg that fits with the rotation-stopping mating surface is flush with the rotation-stopping edge.

[0038] The beneficial effects are: the pressing plate can be rotated together with the operating shaft, and the supporting legs can be closely fitted with the operating shaft, which is convenient for assembly operation.

[0039] As a further improvement, the cross-sectional area of ​​the end of the leg away from the pressure plate is smaller than the cross-sectional area of ​​the end of the leg close to the pressure plate.

[0040] The beneficial effect is that the end of the leg away from the pressure plate is smaller, which can facilitate the leg to pass into the corresponding avoidance groove on the accessory, reducing the difficulty of assembling the accessory.

[0041] As a further improvement, at least one anti-rotation fitting surface is formed on the outer wall of the operating shaft, the contour of the center hole includes an anti-rotation edge that cooperates with the anti-rotation fitting surface, and at least one of the legs is in contact with a anti-rotation fitting surface.

[0042] The beneficial effect is that in the above technical solution, the anti-rotation edge of the center hole can cooperate with the corresponding anti-rotation matching surface, so that the pressure plate and the operating shaft can rotate synchronously. The legs fit with the anti-rotation matching surface, so that the legs can be supported by the anti-rotation matching surface, thereby improving the stability of the legs.

[0043] As a further improvement, the leg that fits with the anti-rotation matching surface has a fitting plane, and the fitting plane is flush with the anti-rotation edge.

[0044] The beneficial effect is that after the fitting plane of the supporting leg fits with the anti-rotation fitting surface, the anti-rotation fitting strength between the pressing plate and the operating shaft can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the grounding switch operation switching mechanism of the present invention;

[0046] Figure 2 It is a schematic diagram of the assembly relationship of the grounding switch operation switching mechanism embodiment 1 of the present invention;

[0047] Figure 3 It is a structural schematic diagram of a pressing plate of Embodiment 1 of the grounding switch operation switching mechanism of the present invention;

[0048] Figure 4 It is a structural schematic diagram of the front cover of Embodiment 1 of the grounding switch operation switching mechanism in the present invention;

[0049] Figure 5 It is a structural schematic diagram of the rear cover of Embodiment 1 of the grounding switch operation switching mechanism in the present invention;

[0050] Figure 6 It is a structural schematic diagram of one of the sector plates of Example 1 of the grounding switch operation switching mechanism in the present invention.

[0051] Description of reference numerals:

[0052] 1. Side panel; 2. Operating shaft; 3. Handle; 4. Wing plate; 5. Stop edge; 6. Pressure plate; 7. Center hole; 8. Spring; 9. Leg; 10. Front cover; 11. Rear cover; 12. Fan-shaped plate; 13. Mounting hole; 14. Bump; 15. Receiving groove; 16. Travel switch; 17. Travel switch mounting plate. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0054] The present invention is further described in detail below in conjunction with embodiments.

[0055] Specific embodiment 1 of the grounding switch operation switching mechanism provided by the present invention:

[0056] In this embodiment, the grounding switch operation switching mechanism includes an operating shaft, a handle and a pressure plate installed on the operating shaft. A support leg for transmitting the thrust of the handle is provided on the pressure plate. The support leg is located on the outside of the operating shaft. When the pressure plate is assembled to the operating shaft, the support leg can also be installed, which facilitates the assembly operation.

[0057] See attached Figure 1 and attached Figure 2, a grounding switch operation switching mechanism, including a side plate 1, an operating shaft 2 and a handle 3. A travel switch mounting plate 17 is fixedly installed on the side plate 1 by bolts, and wing plates 4 perpendicular to the travel switch mounting plate 17 are integrally formed on both sides, and mounting grooves are provided on the wing plates 4, and the operating shaft 2 is rotatably matched with the mounting grooves on the two wing plates 4. One end of the operating shaft 2 is a hexagonal prism structure. Each plane of the side wall of one end of the operating shaft 2 having the hexagonal prism structure is a stop-rotation mating surface, and a slot of an inner hexagonal structure is formed at the end of the handle 3, which is used to be plugged in and matched with one end of the hexagonal prism structure of the operating shaft 2. After the handle is plugged into the operating shaft 2, the operator can rotate the operating shaft 2 through the handle 3.

[0058] The operating shaft 2 is provided with a stop edge 5 and a pressure plate 6, wherein the stop edge 5 is fixedly connected to the operating shaft 2, see the attached Figure 3 A hexagonal center hole 7 is provided in the middle of the pressure plate 6, and the pressure plate 6 can be sleeved on the operating shaft 2 through the center hole 7 and can slide along the operating shaft 2. An elastic member is provided between the pressure plate 6 and the retaining edge 5. In this embodiment, the elastic member is a spring 8 sleeved on the operating shaft, and the two ends of the spring 8 are respectively in contact with the retaining edge 5 and the pressure plate 6. The retaining edge 5 is used to provide support and limit the spring 8. In other embodiments, the retaining edge can also be an annular flange, a shoulder or other structures integrally formed on the operating shaft, or an internally threaded cylinder or an internally threaded ring installed on the operating shaft by threads, or a plate-like structure fixed to the operating shaft by welding.

[0059] Three legs 9 are fixedly provided on the side of the pressure plate 6 away from the spring 8. The three legs 9 are evenly distributed along its circumference. The cross-section of the three legs 9 is a semicircular structure. The plane side of the leg 9 is in contact with a anti-rotation mating surface of the operating shaft 2, and the cross-sectional size of the leg 9 gradually decreases in the direction away from the pressure plate 6.

[0060] See attached Figure 2 , a plurality of accessories are also arranged between the pressure plate 6 and the handle 3. In this embodiment, the accessories include a front cover 10, a rear cover 11, and four fan-shaped plates 12 located between the rear cover 11 and the corresponding wing plate 4. The fan-shaped plates 12 are arranged at different angles and are used for opening and closing operations. The front cover 10 cooperates with the rear cover 11 and the cabinet of the grounding switch to limit the position of each fan-shaped plate 12. At the same time, the front cover 10 can rotate with the operating shaft 2, so the state of opening and closing can be indicated. See the attached Figure 4-6The center of the accessory is provided with a mounting hole 13 for being mounted on the operating shaft 2. The outline of the mounting hole 13 is composed of three straight sides and three arc-shaped sides connecting two adjacent straight sides, and the arc-shaped sides constitute transition sides between the straight sides. The three straight sides of the mounting hole 13 cooperate with the three anti-rotation mating surfaces on the operating shaft 2 to prevent the accessory from rotating relative to the operating shaft 2; the three arc-shaped sides cooperate with the corresponding legs 9 to form an avoidance groove for the legs 9 to pass through. After the legs 9 pass through the avoidance grooves of the accessories, the end of the legs 9 away from the pressure plate 6 is still exposed to a certain length, and the end of the legs 9 away from the pressure plate 6 can abut against the end surface of the handle 3.

[0061] The sides of the front cover 10 and the rear cover 11 facing away from each other face the front side and the rear side of the grounding switch respectively, wherein the side of the rear cover 11 close to the front cover 10 is integrally formed with three protrusions 14, and the outer contours of the three protrusions 14 are arc-shaped. The side of the front cover 10 away from the rear cover 11 is formed with a circular receiving groove 15 for avoiding the handle 3, and the side of the front cover 10 close to the rear cover 11 abuts against the protrusions 14 on the rear cover 11.

[0062] The grounding switch operation switching mechanism also includes a detection device for detecting the position of the pressure plate and an electric operating system for electrically operating the grounding switch. The electric operating system is a prior art and will not be described in detail here.

[0063] In this embodiment, the detection device is a travel switch 16, which is electrically connected to the electric operating device and is used to control the start and stop of the electric operating device. The travel switch 16 is fixedly mounted on the travel switch mounting plate 17 by bolts. The travel switch 16 is located on the side of the pressure plate 6 close to the retaining edge 5, and the contact of the travel switch 16 faces the pressure plate 6. After the pressure plate 6 presses the contact, the on-off state of the travel switch 16 can be changed.

[0064] During use, when the handle 3 is not installed on the operating shaft 2, the pressure plate 6 is pushed away from the stop edge 5 by the spring 8, and the travel switch 16 is in a closed state. The operator can electrically operate the grounding switch through the electric operating device. When the operator installs the handle 3 on the operating shaft 2, the end face of the handle 3 will abut against the end face of the leg 9. In the process of pressing the handle 3 to install it in place, the leg 9 will move toward the direction close to the stop edge 5 under the push of the handle 3, and then the pressure plate 6 will also move toward the direction close to the stop edge 5. The pressure plate 6 presses on the contact and puts the travel switch 16 in an open state, so that the electric operating device cannot electrically operate the grounding switch, and the operator can manually operate it through the handle 3.

[0065] The grounding switch operation switching mechanism can conveniently switch between electric operation and manual operation. During the manual operation of the operator, the electric operation device cannot function, thereby effectively ensuring the safety of the operation process, and the switching process is simple and convenient, saving time and effort. Since the legs 9 pass through the avoidance groove of the accessory, it is not necessary to open a hole in the center of the operating shaft 2, which effectively reduces the assembly convenience and assembly efficiency of the grounding switch operation switching mechanism.

[0066] The specific embodiment 2 of the grounding switch operation switching mechanism provided by the present invention is different from the embodiment 1 mainly in that: this embodiment provides other connection relationships between the accessories and the operating shaft. In this embodiment, the accessories and the operating shaft are welded and fixed to form a non-rotation fit.

[0067] The specific embodiment 3 of the grounding switch operation switching mechanism provided by the present invention differs from the embodiment 1 mainly in that: this embodiment provides other matching methods between the legs and accessories. In this embodiment, each accessory is provided with three avoidance holes evenly distributed along its circumference, and the legs are inserted into the corresponding avoidance holes. At this time, the legs are not in contact with the operating shaft.

[0068] The specific embodiment 4 of the grounding switch operation switching mechanism provided by the present invention is different from the embodiment 1 mainly in that: this embodiment provides other structures of the legs. In this embodiment, the legs are of equal cross-section structure.

[0069] The specific embodiment 5 of the grounding switch operation switching mechanism provided by the present invention differs from the embodiment 1 mainly in that: this embodiment provides other structures of the operating shaft. In this embodiment, the operating shaft is a quadrangular prism structure with four anti-rotation mating surfaces, and the number of legs is two.

[0070] The specific embodiment 6 of the grounding switch operation switching mechanism provided by the present invention differs from the embodiment 1 mainly in that: this embodiment provides other structures of the support leg. In this embodiment, the cross-section of the support leg is a triangular structure, and the width of one side that is in contact with the anti-rotation mating surface is the same as the width of the anti-rotation mating surface. The shape of the mounting hole is a triangular structure, and the support leg passes through the three corners of the mounting hole, and the three corners of the mounting hole constitute an avoidance groove.

[0071] The specific embodiment 7 of the grounding switch operation switching mechanism provided by the present invention differs from the embodiment 1 mainly in that this embodiment provides other installation positions for accessories. In this embodiment, the accessories are not installed between the pressure plate and the handle, but are installed on the side of the guard edge away from the pressure plate. At this time, there is no need to set an avoidance groove or avoidance hole on the accessory for the support legs to pass through.

[0072] The specific embodiment 8 of the grounding switch operation switching mechanism provided by the present invention differs from the embodiment 1 mainly in that: this embodiment provides other installation positions for accessories and the matching relationship between the support legs and the operating shaft when the accessories are not installed between the pressure plate and the handle. In this embodiment, the accessories are not installed between the pressure plate and the handle, but are installed on the side of the baffle away from the pressure plate. At this time, there is no need to set an avoidance groove or avoidance hole on the accessory for the support legs to pass through.

[0073] The support leg is a cylindrical structure, and there is line-surface contact between the support leg and the anti-rotation mating surface. Of course, in other embodiments, the support leg may not be in contact with the anti-rotation mating surface. The shape of the support leg can be designed as needed, for example, the cross-section of the support leg is circular, semicircular or rectangular.

[0074] The specific embodiment of the grounding switch provided by the present invention is as follows:

[0075] A grounding switch includes a cabinet and an operation switching mechanism installed in the cabinet. The operation switching mechanism in this embodiment is any one of the specific embodiments 1-8 of the grounding switch operation switching mechanism in the present invention, which will not be described in detail here.

[0076] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An operating switching mechanism for a grounding switch, comprising an operating shaft and a handle, the handle being provided with a rotation-stopping structure for plugging and rotating with the end of the operating shaft, the operating shaft being provided with a stop edge and a pressing plate for triggering a control switch to cut off the power supply of an electric operating system of the grounding switch, the pressing plate being provided with a center hole, the pressing plate being sleeved on the operating shaft through the center hole and being able to slide along the operating shaft, an elastic member being provided between the stop edge and the pressing plate, wherein the feature is that: At least one leg is fixed to a side of the pressure plate away from the elastic member, the leg is located outside the operating shaft, and the handle has an abutment portion abutting against the end of the leg.

2. The grounding switch operation switching mechanism according to claim 1, characterized in that: An accessory which cooperates with the operating shaft to stop rotation is arranged between the pressing plate and the handle, and an avoidance groove or avoidance hole for the supporting legs to pass through is opened on the accessory.

3. The grounding switch operation switching mechanism according to claim 2, characterized in that: A mounting hole for being sleeved on the operating shaft is provided in the middle of the accessory, at least one anti-rotation matching surface is formed on the outer side wall of the operating shaft, and the contour of the mounting hole includes a straight edge matching with the anti-rotation matching surface.

4. The grounding switch operation switching mechanism according to claim 3, characterized in that: At least one of the legs is fitted with a rotation-stopping mating surface, and the contour of the mounting hole also includes a transition edge connected to the straight edge, and the transition edge cooperates with the legs to form the avoidance groove.

5. The grounding switch operation switching mechanism according to claim 4, characterized in that: At least part of the operating shaft is a hexagonal prism structure with six anti-rotation mating surfaces. The number of the legs is three, and the three legs are in contact with three non-adjacent anti-rotation mating surfaces. There are three straight edges and three transition edges, and the transition edge is connected between two adjacent straight edges.

6. The grounding switch operation switching mechanism according to claim 4 or 5, characterized in that: The contour of the center hole includes a rotation-stopping edge matched with the rotation-stopping matching surface, and the fitting plane of the supporting leg fitted with the rotation-stopping matching surface is flush with the rotation-stopping edge.

7. The grounding switch operation switching mechanism according to any one of claims 2 to 5, characterized in that: The cross-sectional area of ​​one end of the support leg away from the pressing plate is smaller than the cross-sectional area of ​​one end of the support leg close to the pressing plate.

8. The grounding switch operation switching mechanism according to claim 1, characterized in that: At least one anti-rotation fitting surface is formed on the outer side wall of the operating shaft, the contour of the central hole includes an anti-rotation edge matching with the anti-rotation fitting surface, and at least one of the legs is in contact with a anti-rotation fitting surface.

9. The grounding switch operation switching mechanism according to claim 8, characterized in that: The supporting leg that fits with the anti-rotation matching surface has a fitting plane, and the fitting plane is flush with the anti-rotation edge.

10. A grounding switch, characterized in that: It comprises the grounding switch operation switching mechanism as described in any one of claims 1-9.

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