Interlocking device and switchgear

Abstract

The application belongs to the technical field of switch cabinets, and particularly relates to an interlocking device and a switch cabinet. The interlocking device comprises an operating shaft, a first locking mechanism and a second locking mechanism. The first locking mechanism comprises a lifting assembly and a first locking assembly. The lifting assembly is connected with one end of the operating shaft and can move in a vertical direction during rotation of the operating shaft. The lifting assembly has a connecting end and a first locking end. The connecting end is connected with the lifting assembly and can move in the same direction as the lifting assembly. The first locking end can move horizontally during movement of the connecting end. The second locking mechanism comprises a positioning support and a second locking assembly. The positioning support is provided with a locking through hole. The other end of the operating shaft penetrates through the positioning support. The operating shaft can open or close the locking through hole during rotation. The second locking assembly comprises a holding end and a second locking end. The holding end can move in the axial direction of the operating shaft. When the operating shaft opens the locking through hole, the holding end can drive the second locking end to pass through the locking through hole and lock the operating shaft.

Description

Technical Field

[0001] This application belongs to the field of switchgear technology, specifically relating to an interlocking device and a switchgear. Background Technology

[0002] High-voltage switchgear is mainly used for power transmission from small and medium-sized generators in power plants, power distribution in industrial and mining enterprises, power transmission from secondary substations in the power system, and starting of large high-voltage motors, to achieve control, protection, and monitoring functions.

[0003] To ensure operational safety and prevent equipment damage, power grid accidents, and personal injury caused by misoperation, switchgear should possess "five protections" (i.e., protection against five types of damage). Mechanical interlocking of the front and rear doors is one of the important measures for achieving these "five protections," playing a crucial role in safeguarding the normal operation of the switchgear. However, 40.5kV high-voltage switchgear is large in size, and existing interlocking structures suffer from problems such as insufficient interlocking strength due to the rearward placement of the load-bearing structure. Utility Model Content

[0004] The purpose of this application is to solve the problem in the related technology that the interlocking structure of switchgear has insufficient interlocking strength due to the rearward placement of the load-bearing body.

[0005] This application provides an interlocking device, comprising: an operating shaft; a first locking mechanism including a lifting assembly and a first locking assembly, the lifting assembly being connected to one end of the operating shaft and capable of moving vertically during rotation of the operating shaft; the first locking assembly having a connecting end and a first locking end, the connecting end being connected to the lifting assembly and capable of moving in the same direction as the lifting assembly, and the first locking end being capable of moving horizontally during movement of the connecting end; and a second locking mechanism including a positioning bracket and a second locking assembly, the positioning bracket having a locking through hole, the other end of the operating shaft passing through the positioning bracket, and the operating shaft being capable of opening or closing the locking through hole during rotation; the second locking assembly including a gripping end and a second locking end, the gripping end being capable of moving axially on the operating shaft, and when the operating shaft opens the locking through hole, the gripping end being capable of driving the second locking end through the locking through hole to lock the operating shaft.

[0006] In one exemplary embodiment of this application, the first locking end is movable in an axial direction perpendicular to the operating shaft.

[0007] In an exemplary embodiment of this application, the first locking component includes: a connector having a drive section, one end of which has the connecting end, the drive section being connected to the lifting component via the connecting end so as to move in the same direction as the lifting component; and a linkage having a first linkage end and a first locking end, the first linkage end being located on the side of the first locking end near the lifting component and connected to the drive section, the first linkage end being able to move towards or away from the first locking end during the movement of the drive section, thereby driving the first locking end to move in the horizontal direction.

[0008] In one exemplary embodiment of this application, a brake is provided on the side of the operating shaft near the first locking mechanism, and the brake is rotatable together with the operating shaft; the lifting assembly includes a support base and an interlocking slide plate, the support base is fixed on the switch cabinet, the interlocking slide plate is disposed on one side of the support base, and the interlocking slide plate is movable relative to the support base in the vertical direction, the interlocking slide plate includes an abutment portion and a connecting portion, during the rotation of the operating shaft, the brake abuts against the abutment portion to drive the interlocking slide plate to slide relative to the support base; the connecting portion is connected to the connecting end, and during the sliding of the interlocking slide plate, it drives the driving section to move in the vertical direction.

[0009] In an exemplary embodiment of this application, the braking component includes at least a first braking block and a second braking block arranged axially on the operating shaft. The first braking block is located on the side of the second braking block away from the lifting assembly. Both the first and second braking blocks have abutment positions, which are spaced apart in the circumferential direction of the operating shaft. The abutment portion includes a first abutment block and a second abutment block, which correspond to the first and second braking blocks respectively. The first and second abutment blocks are offset in the vertical direction, and the first abutment block is lower than the second abutment block. During the rotation of the operating shaft, the first and second braking blocks abut against the first and second abutment blocks in sequence to apply a vertically downward force to the first and second abutment blocks.

[0010] In one exemplary embodiment of this application, the lifting assembly further includes an elastic element, one end of which is connected to the switch cabinet and the other end of which is connected to the interlocking slide plate. The elastic element is capable of elastic deformation during the movement of the interlocking slide plate to drive the interlocking slide plate back to its initial state.

[0011] In one exemplary embodiment of this application, the first locking assembly further includes a mechanism bracket, the mechanism bracket having a slide groove extending through the axis of the operating shaft, the first locking end being able to slide within the slide groove.

[0012] In one exemplary embodiment of this application, a limiting member is provided on the side of the operating shaft away from the first locking mechanism. The limiting member is sleeved on the operating shaft and has a limiting groove. During the rotation of the operating shaft, the limiting groove can rotate circumferentially along the operating shaft to open or close the locking through hole. The second locking assembly includes a first moving member, a second moving member, and a connecting rod. The first moving member has the gripping end and can move axially along the operating shaft. One end of the connecting rod is connected to the first moving member, and the other end of the connecting rod is connected to the second moving member. The second moving member has a second locking end, which can move within the locking through hole when the first moving member moves closer to or away from the first locking mechanism to lock or unlock the operating shaft.

[0013] In one exemplary embodiment of this application, the operating shaft includes at least a first shaft, a second shaft, and a third shaft. The first shaft and the third shaft are respectively disposed at opposite ends of the second shaft, and the second shaft is an insulated shaft. The first shaft is connected to the first locking mechanism, and the third shaft is connected to the second locking mechanism.

[0014] A second aspect of this application provides a switch cabinet, comprising: a cabinet body; and a grounding switch and an interlocking device as described above disposed within the cabinet body, wherein the operating shaft is connected to the grounding switch on the side away from the first interlocking mechanism to control the grounding switch to close or open.

[0015] The interlocking device and switchgear of this application have at least the following beneficial effects:

[0016] The interlocking device of this application includes an operating shaft, a first locking mechanism, and a second locking mechanism. In the first locking mechanism, the lifting component moves vertically with the rotation of the operating shaft, and drives the connecting end of the first locking component to move in the same direction. The first locking end can move horizontally during the movement of the connecting end. Simultaneously, since the first locking end cooperates with the interlocking plate structure inside the handcart beam in the switchgear, the horizontal movement of the first locking end will cause the internal interlocking plate to extend and retract within the handcart beam. In the second locking mechanism, the other end of the operating shaft passes through a positioning bracket with a locking through hole. The opening and closing of the locking through hole is controlled by rotation. Combined with the axial movement of the gripping end of the second locking component, the second locking end passes through the locking through hole to lock the operating shaft. This enhances the structural strength of the operating shaft to meet the rear-mounted requirements of the load-bearing body, and ensures transmission stability through rigid locking. Furthermore, the non-1:1 transmission ratio design between the operating shaft and the grounding switch reduces the requirements for manual operation and motor output, comprehensively improving the problems of unstable interlocking torque, insufficient strength, and high operational requirements in existing technologies.

[0017] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0020] Figure 1 A schematic diagram of the interlocking device provided in some embodiments is shown.

[0021] Figure 2 A schematic diagram of the structure of a first locking mechanism provided in some embodiments is shown.

[0022] Figure 3 A schematic diagram of the structure in some embodiments showing the connection between the operating shaft and the first locking mechanism is shown.

[0023] Figure 4 A schematic diagram of the structure of a first locking assembly provided in some embodiments is shown.

[0024] Figure 5 The diagram shows structural schematics of the abutment portion and the braking element provided in some embodiments.

[0025] Figure 6 A schematic diagram of the structure of a second locking mechanism provided in some embodiments is shown.

[0026] Figure 7 A schematic diagram of a limiting piece with a limiting groove provided in some embodiments is shown.

[0027] Figure 8 The diagram shows a schematic of a switch cabinet with interlocking devices and grounding switches provided in some embodiments.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Switch cabinet; 10. Interlocking device; 100. Operating shaft; 110. First shaft; 120. Second shaft; 130. Third shaft; 140. Fourth shaft; 150. Fifth shaft; 200. First locking mechanism; 210. Lifting assembly; 211. Second threaded connection hole; 212. Support base; 2120. Guide bar; 213. Interlocking slide plate; 2130. Abutment part; 21300. First abutment block; 21301. Second abutment block; 2131. Connecting part; 2132. 214. Guide groove; 220. Elastic element; 221. First locking assembly; 222. Connecting end; 223. First locking end; 224. Connecting element; 2230. First threaded connection hole; 224. Connecting rod; 2240. First linkage end; 2241. First connecting rod; 22410. First arm; 22411. Second arm; 2242. Second connecting rod; 22420. Third arm; 22421. Fourth arm; 2243. Limiting bracket; 2244. Connecting shaft; 2245. Fixed... 2246, guide pin; 225, mechanism bracket; 2250, slide groove; 226, guide bracket; 2260, bracket body; 2261, guide block; 300, second locking mechanism; 310, positioning bracket; 311, locking through hole; 320, second locking assembly; 321, gripping end; 322, second locking end; 323, first moving part; 3230, gripping rod; 3231, moving rod; 324, second moving part; 325, connecting rod bracket; 326, connecting rod bracket; 327. Connecting rod; 328. Fixed bracket; 329. Spring; 330. Limiting block; 400. Moving bushing; 410. Braking component; 420. First brake block; 430. Second brake block; 430. Third brake block; 500. Limiting bushing; 600. Bushing limiting block; 700. Limiting component; 710. Limiting groove; 720. Limiting sleeve; 730. Limiting piece; 800. First gear; 900. Second gear; 1000. Fixed block; 20. Cabinet; 30. Grounding switch. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0031] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0034] See Figure 1 As shown in the figure, this application embodiment provides an interlocking device 10, which may include an operating shaft 100, a first locking mechanism 200, and a second locking mechanism 300. The opposite ends of the operating shaft 100 are respectively connected to the first locking mechanism 200 and the second locking mechanism 300, and the rotation of the operating shaft 100 can synchronously drive the two mechanisms to cooperate.

[0035] In some embodiments, see Figure 2 and Figure 5As shown, the first locking mechanism 200 includes a lifting assembly 210 and a first locking assembly 220. The lifting assembly 210 is connected to one end of the operating shaft 100, and can move vertically during the rotation of the operating shaft 100, that is, the lifting assembly 210 can convert the circular motion of the operating shaft 100 into linear motion in the vertical direction. The first locking assembly 220 has a connecting end 221 and a first locking end 222. The connecting end 221 is connected to the lifting assembly 210 and moves in the same direction as it. The first locking end 222 can move horizontally during the movement of the connecting end 221. That is, the vertical movement of the lifting assembly 210 drives the first locking end 222 to complete the horizontal locking or unlocking action.

[0036] In some embodiments, see Figure 6 As shown, the second locking mechanism 300 includes a positioning bracket 310 and a second locking assembly 320. The positioning bracket 310 has a circular or elliptical locking through hole 311. The other end of the operating shaft 100 passes through the positioning bracket 310 and can be rotated to control the opening and closing of the locking through hole 311. The second locking assembly 320 includes a gripping end 321 and a locking end 322. The user can manipulate the gripping end 321 to move axially along the operating shaft 100. When the operating shaft 100 opens the locking through hole 311, the gripping end 321 drives the second locking end 322 through the locking through hole 311 to lock the operating shaft 100, thereby preventing accidental operation caused by the accidental rotation of the operating shaft 100.

[0037] It is understandable that, since the first locking mechanism 200 and the second locking mechanism 300 are both located on opposite sides of the operating shaft 100, when the operating shaft 100 is rotated, the two mechanisms can respond synchronously and complete the corresponding actions to achieve coordinated interlocking.

[0038] In the first locking mechanism 200 of this application, the lifting component 210 rotates with the operating shaft 100 to achieve vertical movement, which in turn drives the connecting end 221 of the first locking component 220 to move in the same direction, ultimately causing the first locking end 222 to complete horizontal movement. Since the first locking end 222 cooperates with the internal interlocking plate structure of the handcart's crossbeam in the switchgear 1, when the first locking end 222 moves horizontally, it will cause the internal interlocking plate to extend and retract within the handcart's crossbeam, thereby achieving locking of the handcart within the switchgear 1.

[0039] In the second locking mechanism 300, the other end of the operating shaft 100 passes through the positioning bracket 310, and the opening and closing of the locking through hole 311 is controlled by rotation. When the gripping end 321 of the second locking assembly 320 moves axially, it drives the second locking end 322 to pass through the through hole and lock the operating shaft 100, ensuring that the operating shaft 100 cannot be accidentally rotated under certain conditions, which meets the standard of preventing misoperation in the five-proof requirements. At the same time, this rigid locking design enhances the reliability of the front and rear door locking mechanisms of the switch cabinet 1, avoids accidental opening or locking failure of the door due to accidental displacement of the operating shaft 100, and further improves the safety of the operation of the switch cabinet 1.

[0040] In addition, the positioning bracket 310 provides rigid support for the operating shaft 100, enhancing the overall strength of the interlocking structure and enabling it to meet the requirements of rear-mounted load-bearing components (such as the grounding switch 30).

[0041] In some embodiments, the first locking mechanism 200 can be a front door locking mechanism, which locks or unlocks the front door by controlling the rotation direction of the operating shaft 100. The second locking mechanism 300 can be a rear door locking mechanism, which can be connected to the grounding switch 30 in the switch cabinet 1. By controlling the rotation of the operating shaft 100, the grounding switch 30 is closed and opened, as well as the rear door is locked or unlocked, realizing the linkage and interlocking of multiple components.

[0042] In some embodiments, the first locking end 222 is movable in a direction perpendicular to the axis of the operating shaft 100. This design allows the rotation of the operating shaft 100 to be directly converted into a linear locking action of the first locking end 222 in a direction perpendicular to the axis through the cooperation of the lifting assembly 210 and the first locking assembly 220. In this way, the internal interlocking plate structure of the handcart beam can reciprocate in a direction perpendicular to the axis of the operating shaft 100 to control the extension and retraction of the internal interlocking plate within the handcart beam, thereby achieving the locking of the handcart within the switch cabinet 1.

[0043] In some embodiments, see Figure 4 As shown, the first locking assembly 220 includes a connector 223 and a linkage 224. The connector 223 has a driving section, one end of which is a connecting end 221. The connecting end 221 is connected to the lifting assembly 210 and moves in the same direction as the lifting assembly. The linkage 224 includes a first linkage end 2240 and a first locking end 222. The first linkage end 2240 is located on the side of the first locking end 222 near the lifting assembly 210 and is connected to the driving section. It can move towards or away from the first locking end 222 when the driving section moves, thereby driving the first locking end 222 to move horizontally.

[0044] By coordinating the movement of the drive section and the lifting assembly 210 with the directional movement of the first linkage end 2240, a precise conversion of the movement direction is achieved.

[0045] For example, see Figures 2 to 6 As shown, the connector 223 can be a long strip-shaped drive block with a first threaded connection hole 2230 at its upper end and a corresponding second threaded connection hole 211 at the bottom of the lifting assembly 210. During installation, the two are fixed by bolts or other fasteners so that the drive block can move synchronously with the lifting assembly 210.

[0046] See Figure 3 and Figure 4 As shown, the drive block has a through hole in the middle. The connecting rod 224 may include a first connecting rod 2241, a second connecting rod 2242, a limiting bracket 2243, a connecting shaft 2244, a positioning pin 2245, and a guide pin 2246. The first connecting rod 2241 and the second connecting rod 2242 are arranged opposite each other and have the same structure. For example, both the first connecting rod 2241 and the second connecting rod 2242 can be L-shaped connecting rod structures, including mutually perpendicular connecting rod portions. The first connecting rod 2241 includes a first arm 22410 and a second arm 22411, and the second connecting rod 2242 includes a third arm 22420 and a fourth arm 22421. The first arm 22410 and the third arm 22420 are parallel and opposite each other, and the second arm 22411 and the fourth arm 22421 are parallel and opposite each other.

[0047] The first end of the first arm 22410 and the first end of the third arm 22420 are connected by one end of the connecting shaft 2244. The driving block is located between the first arm 22410 and the third arm 22420, and the connecting shaft 2244 passes through the through hole of the driving block. When the driving block moves vertically with the lifting assembly 210, it can drive the connecting shaft 2244, the first arm 22410 and the third arm 22420 to move vertically synchronously (i.e., the connecting shaft 2244 is the first linkage end 2240).

[0048] See Figure 4 As shown, a bushing is fitted on the outer side of the connecting shaft 2244. The bushing is engaged between the first arm 22410 and the third arm 22420. The bushing includes a first part and a second part. The driving block is clamped between the first part and the second part, which can prevent the driving block from sliding relative to the first arm 22410 and the third arm 22420, and ensure that the driving block can stably drive the connecting shaft 2244 to move vertically.

[0049] Both ends of the connecting shaft 2244 pass through the first arm 22410 and the third arm 22420, and at least one end is provided with a limiting hole. On the side where the limiting hole is provided, the connecting shaft 2244 is provided with a pin and a washer. The pin is inserted into the limiting hole to fix the first arm 22410 and the third arm 22420 to the connecting shaft 2244 to prevent them from falling off. The washer is provided on the side of the pin near the first arm 22410 and the third arm 22420 to reduce the friction between the pin and the arm body and ensure structural stability.

[0050] See Figure 4 As shown, the first end of the first arm 22410 and the first end of the third arm 22420 are both provided with elongated through holes through which the connecting shaft 2244 passes. The size of the through holes is larger than the size of the connecting shaft 2244, so that the connecting shaft 2244 can be adjusted in the through holes so that the first arm 22410 and the third arm 22420 are aligned with each other.

[0051] A first connecting hole is provided at the connection between the first arm 22410 and the second arm 22411, and a second connecting hole is provided at the connection 2131 between the third arm 22420 and the fourth arm 22421. The positioning pin 2245 may include a positioning shaft and a positioning sleeve. The opposite ends of the positioning shaft pass through the first connecting hole and the second connecting hole. The positioning sleeve is sleeved on the positioning shaft and located between the first connecting rod 2241 and the second connecting rod 2242 to limit the movement of the first arm 22410 and the third arm 22420 toward each other and ensure the stability of the connecting rod 224.

[0052] The limit bracket 2243 can adopt a U-shaped structure, which includes a first plate, a second plate, and a third plate. The first plate is connected to the third plate through the second plate, and both the first and third plates are perpendicular to the second plate, and the first and second plates are parallel and opposite to each other. Limiting through holes are provided on both the first and third plates, and both ends of the positioning shaft pass through the limiting through holes on the first and third plates. Threaded holes are provided on the second plate, and the second plate is fixed to the switch cabinet 1 with bolts to ensure the stability of the limit bracket 2243.

[0053] Both ends of the positioning shaft are provided with insertion holes, and a pin and a washer are also provided on the side with the insertion holes. The pin is inserted into the insertion hole to fix the positioning shaft to the limiting bracket 2243, thereby fixing the first connecting rod 2241 and the second connecting rod 2242 to the limiting bracket 2243 and limiting the displacement of the positioning shaft in the vertical direction. The washer is provided on the side of the pin near the limiting bracket 2243 to avoid relative friction between the pin and the limiting bracket 2243 and to ensure the stability of the positioning shaft and the limiting bracket 2243.

[0054] Both the second arm 22411 and the fourth arm 22421 have a first guide hole at their second ends, and the first guide holes on the second arm 22411 and the fourth arm 22421 are arranged opposite to each other. One end of the guide pin 2246 passes through the first guide hole of the second arm 22411, and the other end passes through the first guide hole of the fourth arm 22421. The guide pin 2246 passing through the second arm 22411 and the fourth arm 22421 is the first locking end 222.

[0055] In some embodiments, see Figure 4As shown, the first locking assembly 220 also includes a mechanism bracket 225. The mechanism bracket 225 is fixed to the switch cabinet 1. The mechanism bracket 225 has a U-shaped groove. The opposite side walls of the U-shaped groove are provided with strip-shaped sliding grooves 2250 that pass through the axis parallel to the operating shaft 100. The opposite ends of the guide pin 2246 pass through the oppositely arranged sliding grooves 2250, and each opposite end of the guide pin 2246 is provided with a pin to prevent the guide pin 2246 from disengaging from the sliding groove 2250 and to ensure the stability of the guide pin 2246 sliding within the sliding groove 2250. That is, the first locking end 222 is inserted into the sliding groove 2250.

[0056] It should be noted that the mechanism bracket 225 can be integrally formed with the limiting bracket 2243, and the mechanism bracket 225 and the limiting bracket 2243 are connected at one bottom.

[0057] By moving the drive block vertically and driving the guide pin 2246 horizontally within the slide groove 2250 via the first link 2241 and the second link 2242, the longitudinal movement of the drive block and the lateral movement of the guide pin 2246 are achieved. This allows for efficient transmission of driving force through precise directional adaptation, simplifies the transmission structure, facilitates the adjustment of the transmission ratio, and enhances the stability and reliability of the locking action.

[0058] For example, when the drive block moves vertically upward with the lifting assembly 210, it drives the first end of the connecting shaft 2244, the first arm 22410 and the third arm 22420 to move upward. At this time, the guide pins 2246 on the second arm 22411 and the fourth arm 22421 move horizontally in the slide groove 2250 towards the end closer to the operating shaft 100. Conversely, when the drive block moves vertically downward, the guide pins 2246 move horizontally towards the end away from the operating shaft 100.

[0059] This application utilizes a design that balances the vertical movement distance of the first linkage end 2240 with the horizontal movement distance of the first locking end 222. This allows for flexible adjustment of the transmission ratio, enabling non-1:1 transmission, amplifying the driving torque, and reducing manual operation intensity. This flexible transmission ratio design not only reduces the demands on manpower and motor output but also adapts to the structural requirements of the large-frame switchgear 1, avoiding the operational and strength issues associated with a 1:1 transmission ratio. This enhances the applicability and reliability of the first locking mechanism 200 in various scenarios.

[0060] It is understandable that the circular motion of the operating shaft 100 can be converted into the vertical linear motion of the lifting assembly 210, which can be achieved through a crank-connecting rod mechanism, a gear and rack mechanism, or a lead screw and nut mechanism.

[0061] In some embodiments, see Figure 3 and Figure 5As shown, a brake 400 is provided on the side of the operating shaft 100 near the first locking mechanism 200, and the brake 400 can rotate synchronously with the operating shaft 100. The lifting assembly 210 includes a support base 212 and an interlocking slide plate 213. The support base 212 can be fixed on the switch cabinet 1, and the interlocking slide plate 213 is located on one side of the support base 212, and the interlocking slide plate 213 can move vertically relative to the support base 212.

[0062] In some embodiments, see Figure 2 and Figure 3 As shown, the interlocking slide plate 213 may include an abutment portion 2130 and a connecting portion 2131. During the rotation of the operating shaft 100, the brake member 400 may abut against the abutment portion 2130 to drive the interlocking slide plate 213 to slide relative to the support base 212. The connecting portion 2131 is connected to the connecting end 221 of the drive block, and drives the drive section of the drive block to move in the vertical direction during the sliding of the interlocking slide plate 213.

[0063] In this application, the rotational motion of the operating shaft 100 is converted into the vertical linear motion of the interlocking slide plate 213 through the abutment engagement of the brake 400 and the abutment part 2130, thereby driving subsequent components. Compared with the traditional four-bar linkage, this eliminates the complex structure of multi-node coordination. Because the transmission path is clear and directly relies on the fixed guidance of the support base 212 and the direct drive of the brake 400, torque component loss caused by misalignment in the assembly angles of multiple components is reduced, improving the smoothness and efficiency of torque transmission. Simultaneously, the vertical sliding direction and the driving requirements of the lifting assembly 210 make the movement of the first locking assembly 220 more compatible, reducing the precision requirements for the installation process of each component. This solves the problems of unstable interlocking torque transmission and high installation process requirements in the prior art, enhancing the operational reliability and ease of operation of the first locking mechanism 200.

[0064] It should be noted that the support base 212 is provided with a guide strip 2120, and the interlocking slide plate 213 is provided with a guide groove 2132. The guide groove 2132 is adapted to the guide strip 2120. The guide strip 2120 is inserted into the guide groove 2132 to provide guidance for the interlocking slide plate 213, ensuring that it slides smoothly relative to the support base 212.

[0065] In addition, see Figure 5 As shown, the connecting part 2131 of the interlocking slide plate 213 is provided with multiple threaded holes, which can be adapted to drive blocks of different specifications, thereby enhancing the versatility of the interlocking slide plate 213.

[0066] In some embodiments, see Figure 3As shown, the brake element 400 may include at least a first brake block 410 and a second brake block 420 arranged axially on the operating shaft 100. The first brake block 410 is located on the side of the second brake block 420 away from the lifting assembly 210. Both the first brake block 410 and the second brake block 420 are provided with abutment positions. The abutment positions of the first brake block 410 and the second brake block 420 are arranged circumferentially on the operating shaft 100, and the abutment position of the first brake block 410 is closer to the connecting rod 224 than the abutment position of the second brake block 420.

[0067] In some embodiments, see Figure 3 and Figure 5 As shown, the abutment portion 2130 may include a first abutment block 21300 and abutment block 21301. The first abutment block 21300 and the second abutment block 21301 correspond to the first brake block 410 and the second brake block 420, respectively. The first abutment block 21300 and the second abutment block 21301 are offset in the vertical direction, and the first abutment block 21300 is lower than the second abutment block 21301, that is, the second abutment block 21301 is closer to the operating shaft 100.

[0068] During the rotation of the operating shaft 100, the first brake block 410 and the second brake block 420 abut against the first abutment block 21300 and the second abutment block 21301 in sequence. That is, the first brake block 410 abuts against the first abutment block 21300 first, and then the second brake block 420 abuts against the second abutment block 21301 to apply a vertically downward force to the first abutment block 21300 and the second abutment block 21301.

[0069] This design transforms the rotational motion of the operating shaft 100 into the vertical movement of the interlocking slide plate 213 in stages. Compared to the impact transmission of a traditional single brake block, the step-by-step drive reduces the intensity of a single force, avoiding component wear or deformation caused by excessive instantaneous impact force, and improving the smoothness of torque transmission. At the same time, the circumferentially spaced abutment positions and the vertically misaligned abutment blocks cooperate to ensure that the operating shaft 100 can be precisely driven at different rotation angles, reducing the requirements for the assembly precision of the brake block and abutment block, reducing the problem of drive failure due to angular deviation in the single brake block transmission of the prior art, and enhancing the operational stability of the first locking mechanism 200.

[0070] In addition, the advantages of the dual brake block design are: first, it applies force in stages to distribute the load and extend the service life of the components; second, it forms a dual drive guarantee, so even if a single brake block or abutment block is slightly worn, the other set can still maintain the transmission function and improve the fault tolerance of the mechanism; third, it works with the misaligned abutment block to realize the stepped movement of the interlocking slide plate 213, which is adapted to the stroke requirements of different locking stages of the first locking end 222, and further optimizes the accuracy of the locking action.

[0071] In other embodiments, see Figure 3 As shown, the brake component 400 may further include a third brake block 430. The third brake block 430 is disposed adjacent to the second brake block 420, and the abutment position of the second brake block 420 and the abutment position of the third brake block 430 are on the same plane, that is, the second brake block 420 and the third brake block 430 abut against the second abutment block 21301 at the same time, thereby enhancing the stability of the driving force.

[0072] In some embodiments, see Figure 3 As shown, the lifting assembly 210 also includes an elastic element 214. The elastic element 214 can be a tension spring, with one end connected to the switch cabinet 1 and the other end connected to the interlocking slide plate 213. The elastic element 214 can elastically deform during the movement of the interlocking slide plate 213 to drive the interlocking slide plate 213 back to its initial state.

[0073] The elastic element 214 utilizes the elastic potential energy stored in its deformation to achieve automatic reset of the interlocking slide plate 213. When the operating shaft 100 rotates in the reverse direction, causing the brake 400 to release its force on the abutment 2130, the restoring force of the elastic element 214 can directly drive the interlocking slide plate 213 back to its initial position, eliminating the need for additional manual operation, simplifying the operation process, and improving the automation level of the locking mechanism. Simultaneously, the elastic element 214 deforms synchronously during the movement of the interlocking slide plate 213, buffering the impact force when the brake 400 is driven, reducing rigid friction and vibration between the interlocking slide plate 213 and the support base 212, reducing component wear, and extending service life. Furthermore, compared to traditional reset structures that rely on gravity or complex mechanical linkages, the elastic reset of the elastic element 214 is not limited by the installation angle, adapting to the layout requirements of different switchgear 1, and the reset action is smooth and without jamming, ensuring that the first locking end 222 can accurately return to the unlocked position, avoiding operational jamming or locking failure due to incomplete reset, and enhancing the operational reliability and stability of the first locking mechanism 200.

[0074] In some embodiments, see Figure 4As shown, the first locking assembly 220 also includes a guide bracket 226. The guide bracket 226 is located on one side of the limiting bracket 2243 and above the mechanism bracket 225. The guide bracket 226 has a fixing hole, and is fixed to the switch cabinet 1 by screws or other fasteners. The guide bracket 226 includes a bracket body 2260 and a guide block 2261. The guide block 2261 is perpendicular to the surface of the bracket body 2260. The guide block 2261 and the bracket body 2260 can be welded or integrally formed. The guide block 2261 has a second guide hole that extends vertically. The end of the drive block away from the lifting assembly 210 is inserted into the second guide hole and can slide relative to the second guide hole. By restricting the drive block within the second guide hole, the drive block can be forced to slide only in the vertical direction, strictly constraining the movement trajectory of the drive block, avoiding transmission misalignment or jamming due to lateral offset, ensuring that the movement direction of the moving block is precisely matched with the driving force direction of the lifting assembly 210, and improving transmission efficiency.

[0075] In some embodiments, see Figure 2 As shown, the interlocking device 10 also includes a limiting bushing 500 and a bushing limiting block 600, both of which are sleeved on the side of the operating shaft 100 near the first locking component 220 and located on the side of the first brake block 410 near the second locking component 320. The bushing limiting block 600 is located on the side of the limiting bushing 500 away from the first brake block 410 and is fixed to the operating shaft 100 by screws or the like, thereby locking the first brake block 410 and the second brake block 420 onto the operating shaft 100, ensuring that they stably abut against the first and second abutment blocks 21301, and ensuring that the interlocking slide plate 213 can slide smoothly relative to the support seat 212.

[0076] In some embodiments, see Figure 6 As shown, a limiting member 700 is provided on the side of the operating shaft 100 away from the first locking mechanism 200. The limiting member 700 is sleeved outside the operating shaft 100 and has a limiting groove 710. During the rotation of the operating shaft 100, the limiting groove 710 can rotate along the circumference of the operating shaft 100 to open or close the locking through hole 311.

[0077] For example, see Figure 6 and Figure 7As shown, the limiting member 700 may include a limiting sleeve 720 and a limiting piece 730, which may be integrally formed. Both the limiting sleeve 720 and the limiting piece 730 are sleeved on the end of the operating shaft 100 away from the first locking mechanism 200. The limiting piece 730 is located on the side of the limiting sleeve 720 away from the first locking mechanism 200, and the limiting piece 730 has the aforementioned limiting groove 710. The limiting sleeve 720 has a pin hole into which a pin can be inserted, thereby fixing the limiting sleeve 720 to the operating shaft 100, so that when the operating shaft 100 rotates, it can drive the limiting sleeve 720 and the limiting piece 730 to rotate synchronously with the operating shaft 100.

[0078] Understandably, the limiting sleeve 720 and the locking through hole 311 on the positioning bracket 310 do not overlap. The limiting piece 730 and the locking through hole 311 on the positioning bracket 310 cooperate to block it. During rotation, when the limiting groove 710 on the limiting piece 730 rotates to the locking through hole 311, the limiting groove 710 can be fully exposed to the locking through hole 311, allowing the second locking end 322 to extend or retract at the locking through hole 311.

[0079] In some embodiments, see Figure 6 and Figure 7 As shown, the second locking assembly 320 includes a first moving member 323, a second moving member 324, and a connecting rod 326. The first moving member 323 has a gripping end 321 and is axially movable along the operating shaft 100. One end of the connecting rod 326 is connected to the first moving member 323, and the other end of the connecting rod 326 is connected to the second moving member 324. The second moving member 324 has a second locking end 322 and is axially movable within the locking through hole 311 when the first moving member 323 moves toward or away from the first locking mechanism 200 to lock or unlock the operating shaft 100.

[0080] For example, see Figure 6 and Figure 7 As shown, the second locking assembly 320 includes a first moving member 323, a second moving member 324, a connecting rod bracket 325, a connecting rod 326, and a fixed bracket 327. The first moving member 323 has a gripping rod 3230 and a moving rod 3231. The gripping rod 3230 includes a gripping section and a connecting section, which are perpendicular to each other. The gripping section can be located outside the switch cabinet 1, and the connecting section can be located inside the switch cabinet 1.

[0081] See Figure 6 and Figure 7As shown, the linkage bracket 325 adopts a U-shaped structure, which includes a first connecting plate, a second connecting plate, and a third connecting plate. The first connecting plate is connected to the third connecting plate through the second connecting plate, and the first and second connecting plates are arranged perpendicular to each other, parallel to each other, and opposite to each other. The third connecting plate is located on the side of the first connecting plate near the first locking mechanism 200. The second connecting plate has fixing holes, which can be fixed to the switch cabinet 1 by screws or rivets. Both the first and third connecting plates have third guide holes. The opposite ends of the moving rod 3231 pass through the third guide holes on the first and third connecting plates, respectively, to limit the moving rod 3231 to the linkage bracket 325.

[0082] This design ensures that the moving rod 3231 can only move linearly along the axial direction of the third guide hole when under force, strictly limiting its radial displacement and avoiding bending or swaying caused by lateral forces, thus improving the accuracy of the moving rod 3231's movement trajectory. Furthermore, the guide hole design at both ends of the moving rod 3231 forms a double-support point, distributing the load borne by the moving rod 3231 during transmission, reducing stress concentration, minimizing component fatigue wear, and extending service life.

[0083] See Figure 6 As shown, both ends of the connecting rod 326 are provided with elongated connecting through holes. The end of the moving rod 3231 that passes through the third connecting plate is provided with a threaded through hole that extends radially through it. Fixing structures such as bolts or screws are connected to the connecting through holes and the threaded through holes to connect the connecting rod 326 and the moving rod 3231.

[0084] See Figure 6 and Figure 7 As shown, the fixed bracket 327 is located below the positioning bracket 310 and is higher than the connecting rod bracket 325. The fixed bracket 327 is fixed inside the switch cabinet 1 and has screw holes. The connecting rod 326 has a fixing through hole at the middle position, which corresponds to the screw hole. Bolts are inserted into the connecting rod 326 and the fixed bracket 327 to fix the connecting rod 326 to the fixed bracket 327, thereby fixing the connecting rod 326 to the switch cabinet 1. When the moving rod 3231 moves one end of the connecting rod 326, the connecting rod 326 will oscillate in a circular motion with the axis of this bolt as the fulcrum.

[0085] See Figure 6 As shown, the second moving part 324 has a threaded through hole. A bolt or screw or other fixing structure connects to the connecting through hole at the other end of the connecting rod 326 and the threaded through hole on the second moving part 324 to connect the connecting rod 326 to the second moving part 324. The side of the second moving part 324 closest to the first locking mechanism 200 is the second locking end 322.

[0086] When the gripping rod 3230 moves the moving rod 3231 towards or away from the first locking mechanism 200, the connecting rod 326 swings counterclockwise or clockwise around the axis of the fixed through hole. Since the connecting rod 326 is fixedly connected to the switch cabinet 1 through the fixed bracket 327, it will drive the second moving member 324 to move in the opposite direction to the moving rod 3231, that is, towards or away from the first locking mechanism 200, so that the second locking end 322 can retract or extend within the locking through hole 311.

[0087] Understandably, when the second locking end 322 moves toward the first locking mechanism 200 and extends out of the locking through hole 311, the second moving member 324 engages in the limiting groove 710 of the limiting piece 730 to lock the operating shaft 100 and prevent accidental activation. When the second locking end 322 moves away from the first locking mechanism 200 and retracts, the second locking end 322 disengages from the groove of the limiting piece 730, unlocking the limiting member 700, and the operating shaft 100 can rotate normally.

[0088] In addition, see Figure 6 As shown, elongated connecting holes are provided at both ends of the connecting rod 326. This design provides a certain displacement compensation space for the connection between the connecting rod 326 and the moving rod 3231 and the second moving member 324. When the connecting rod 326 swings with the fixed bracket 327 as the fulcrum, the connection points at both ends will have slight angular offsets and positional changes with the swing. The elongated holes allow the connection points to slide slightly within the holes, avoiding motion interference or jamming caused by rigid fixation, and ensuring that the swing of the connecting rod 326 can be smoothly converted into the linear motion of the second moving member 324. At the same time, this design can compensate for dimensional errors (such as hole position deviations) during the machining and assembly of parts, reduce the requirements for manufacturing precision, and simplify the assembly process. In addition, the elongated holes disperse the stress concentration at the connection part 2131, avoiding component deformation or breakage caused by rigid constraints during long-term swinging, extending the service life of the connecting rod 326 and related components, and enhancing the stability and reliability of the transmission of the second locking assembly 320.

[0089] In some embodiments, see Figure 6 As shown, a spring 328 is also sleeved on the moving rod 3231. The spring 328 is sleeved on the moving rod 3231 and located between the first connecting plate and the third connecting plate. When the moving rod 3231 moves towards the side closer to the first locking mechanism 200, the spring 328 deforms and stores elastic potential energy. It can provide elastic restoring force when the moving rod 3231 moves away from the first locking mechanism 200, enabling the moving rod 3231 to move quickly away from the first locking mechanism 200, causing the second moving member 324 to extend out of the locking through hole 311 and insert into the limiting groove 710 to limit and fix the operating shaft 100, avoiding the risk of accidental contact.

[0090] In some embodiments, see Figure 6 As shown, the second locking assembly 320 also includes a limiting block 329 and a moving bushing 330. Both the limiting block 329 and the moving bushing 330 are fitted onto the second moving member 324, and the limiting block 329 and the moving bushing 330 can be integrally formed. The positioning bracket 310 includes a first positioning plate and a second positioning plate, which are integrally formed and perpendicular to each other. The first positioning plate is fixedly connected to the switch cabinet 1 through a fixing hole, so that the positioning bracket 310 is fixed inside the switch cabinet 1. The second positioning plate has the aforementioned locking through hole 311.

[0091] It should be noted that the size of the limiting block 329 is larger than the size of the locking through hole 311. Thus, when the second moving member 324 moves closer to the first locking mechanism 200, the limiting block 329 can abut against the second positioning plate, preventing the second moving member 324 from sliding out of the locking through hole 311 and preventing the limiting of the second moving member 324 from failing.

[0092] In some embodiments, see Figure 6 As shown, a first gear 800 is provided at the end of the operating shaft 100 away from the first locking mechanism 200. The interlocking device 10 also includes a second gear 900 and a fixing block 1000. The first gear 800 and the second gear 900 mesh with each other, and the second gear 900 and the fixing block 1000 are interlocked and fixed to the switch cabinet 1. The second gear 900 is provided with an operating hole, which can be connected to the operating rod of the grounding switch 30. By rotating the operating rod, the grounding switch 30 is controlled to close or open. That is, by controlling the rotation of the operating shaft 100, the operating rod is used to control the grounding switch 30 to close or open, thereby establishing an interlock between the grounding switch 30 and the front door.

[0093] It should be noted that both the first gear 800 and the second gear 900 can be bevel gears, and the transmission ratio between the first gear 800 and the second gear 900 can be 2:1. The line contact meshing of the bevel gears ensures uniform force distribution during transmission. Combined with the 2:1 reduction and torque amplification characteristic, the input torque of the operating shaft 100 can be effectively amplified, significantly reducing the operating force required to drive the grounding switch 30, thus achieving a labor-saving effect. At the same time, the stable meshing transmission and fixed transmission ratio avoid sudden torque changes, making the interlocking torque transmission smoother, reducing damage to components from inertial impacts, and enhancing the overall structural strength and fatigue resistance. In addition, the labor-saving design reduces the physical demands on the operator, and the smooth torque transmission makes the operation feel smoother, eliminating the need for complex control of force or speed, and simplifying the operation process.

[0094] In some embodiments, see Figure 1As shown, the operating shaft 100 includes at least a first shaft 110, a second shaft 120, and a third shaft 130. The first shaft 110 and the third shaft 130 are respectively located at opposite ends of the second shaft 120, and the second shaft 120 is an insulated shaft. The first shaft 110 is connected to the first locking mechanism 200, and the third shaft 130 is connected to the second locking mechanism 300. By using the second shaft 120 as an insulating section, reliable electrical isolation is formed between the first shaft 110 and the third shaft 130. Furthermore, since the second shaft 120 is close to the primary conductor inside the switchgear 1, designing the second shaft 120 as an insulating section can block the conductive path between the second shaft 120 and the primary conductor, avoiding insulation breakdown or short-circuit faults caused by proximity. Moreover, designing the second shaft 120 as an insulating section can also prevent high voltage from being conducted to the locking mechanism through the operating shaft 100, ensuring the safety of equipment operation and personnel operation and maintenance. In addition, the segmented shaft design allows the operating shaft 100 to be adapted to the installation position of different locking mechanisms. The first shaft 110 and the third shaft 130 can be made of high-strength metal materials according to the driving force requirements of the corresponding mechanisms, while the second shaft 120 is made of materials with excellent insulation properties, ensuring efficient torque transmission while taking into account electrical safety.

[0095] For example, see Figure 1 As shown, the operating shaft 100 includes a first shaft 110, a second shaft 120, a third shaft 130, a fourth shaft 140, and a fifth shaft 150. The first shaft 110 and the third shaft 130 are solid metal shafts, and can be hexagonal or pentagonal. The fourth shaft 140 is located between the first shaft 110 and the second shaft 120, and the fifth shaft 150 is located between the third shaft 130 and the second shaft 120. The fourth shaft 140 and the fifth shaft 150 can be made of metal bushings. The second shaft 120 can be an epoxy-insulated shaft. Both ends of the fourth shaft 140 can be fixedly connected to the first shaft 110 and the second shaft 120 via insertion pins, and both ends of the fifth shaft 150 can also be fixedly connected to the third shaft 130 and the fifth shaft 150 via insertion pins, ensuring a stable connection between each segment.

[0096] See Figure 8 As shown, this application embodiment also provides a switch cabinet 1, including a cabinet body 20, a grounding switch 30, and the aforementioned interlocking device 10. The side of the operating shaft 100 away from the first locking mechanism 200 is connected to the operating lever of the grounding switch 30 via a second gear 900. By controlling the rotation of the operating shaft 100, the grounding switch 30 is closed and opened. At the same time, the position of the handcart inside the switch cabinet 1 is controlled in conjunction with the operation of the operating shaft 1, thereby comprehensively improving the operational safety and standardization of the switch cabinet 1.

[0097] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0098] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. An interlocking device, characterized in that include: Operating axis; The first locking mechanism includes a lifting assembly and a first locking assembly. The lifting assembly is connected to one end of the operating shaft and can move in the vertical direction during the rotation of the operating shaft. The first locking assembly has a connecting end and a first locking end. The connecting end is connected to the lifting assembly and can move in the same direction as the lifting assembly. The first locking end can move horizontally during the movement of the connecting end. The second locking mechanism includes a positioning bracket and a second locking assembly. The positioning bracket has a locking through hole, and the other end of the operating shaft passes through the positioning bracket. The operating shaft can open or close the locking through hole during rotation. The second locking assembly includes a gripping end and a locking end. The gripping end can move axially on the operating shaft. When the operating shaft opens the locking through hole, the gripping end can drive the second locking end through the locking through hole to lock the operating shaft.

2. The interlock of claim 1, wherein, The first locking end is movable in a direction perpendicular to the axis of the operating shaft.

3. The interlock of claim 2, wherein, The first locking component includes: The connector is provided with a drive section, one end of which is provided with the connecting end. The drive section is connected to the lifting assembly through the connecting end so that it can move in the same direction of movement as the lifting assembly. The linkage includes a first linkage end and a first locking end. The first linkage end is located on the side of the first locking end near the lifting assembly, and the first linkage end is connected to the drive section. The first linkage end can move towards or away from the first locking end during the movement of the drive section, so as to drive the first locking end to move in the horizontal direction.

4. The interlock of claim 3, wherein, A braking element is provided on the side of the operating shaft near the first locking mechanism, and the braking element can rotate together with the operating shaft. The lifting assembly includes a support base and an interlocking slide plate. The support base is fixed to the switch cabinet, and the interlocking slide plate is located on one side of the support base. The interlocking slide plate is movable relative to the support base in the vertical direction. The interlocking slide plate includes an abutment portion and a connecting portion. During the rotation of the operating shaft, the brake abuts against the abutment portion to drive the interlocking slide plate to slide relative to the support base. The connecting portion is connected to the connecting end and drives the drive section to move in the vertical direction during the sliding of the interlocking slide plate.

5. The interlock of claim 4, wherein, The braking component includes at least a first braking block and a second braking block arranged axially on the operating shaft. The first braking block is located on the side of the second braking block away from the lifting assembly. Both the first braking block and the second braking block are provided with abutment positions. The abutment positions of the first braking block and the abutment positions of the second braking block are arranged at intervals in the circumferential direction of the operating shaft. The abutting part includes a first abutting block and a second abutting block, the first abutting block and the second abutting block respectively correspond to the first braking block and the second braking block, the first abutting block and the second abutting block are offset in the vertical direction, and the first abutting block is lower than the second abutting block; During the rotation of the operating shaft, the first brake block and the second brake block abut against the first abutment block and the second abutment block in sequence to apply a vertically downward force to the first abutment block and the second abutment block.

6. The interlock of claim 4, wherein, The lifting assembly also includes an elastic element, one end of which is connected to the switch cabinet and the other end of which is connected to the interlocking slide plate. The elastic element can undergo elastic deformation during the movement of the interlocking slide plate to drive the interlocking slide plate back to its initial state.

7. The interlock of claim 3, wherein, The first locking assembly further includes a mechanism bracket, which has a slide groove extending through the axis of the operating shaft, and the first locking end can slide within the slide groove.

8. The interlock of claim 1, wherein, A limiting member is provided on the side of the operating shaft away from the first locking mechanism. The limiting member is sleeved on the outside of the operating shaft and has a limiting groove. During the rotation of the operating shaft, the limiting groove can rotate along the circumference of the operating shaft to open or close the locking through hole. The second locking assembly includes a first movable member, a second movable member, and a connecting rod. The first movable member has the gripping end and is axially movable along the operating shaft. One end of the connecting rod is connected to the first movable member, and the other end of the connecting rod is connected to the second movable member. The second movable member has a second locking end, which is movable within the locking through hole when the first movable member moves toward or away from the first locking mechanism to lock or unlock the operating shaft.

9. The interlock of claim 1, wherein, The operating shaft includes at least a first shaft, a second shaft, and a third shaft. The first shaft and the third shaft are respectively located at opposite ends of the second shaft, and the second shaft is an insulated shaft. The first shaft is connected to the first locking mechanism, and the third shaft is connected to the second locking mechanism.

10. Switchgear cabinet, characterized in that include: Cabinet; and the cabinet body The grounding switch and the interlocking device according to any one of claims 1 to 9, wherein the operating shaft is connected to the grounding switch on the side away from the first locking mechanism to control the grounding switch to close or open.

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