A switch five-prevention interlocking device for energy upgrading power distribution equipment and a use method thereof

Abstract

The present application relates to the field of power distribution equipment auxiliary tools, and discloses a power upgrading power distribution equipment switch five-prevention interlocking device and a use method, which comprises a threaded pipe, an extension structure is arranged in the threaded pipe, the extension structure comprises a trigger block, an opposite threaded rod, a movable rod, a clamping block, a sliding block, a partition plate and a connecting block, when a rotating force is applied to the opposite threaded rod, the opposite threaded rod can control the two sliding blocks to move towards each other or in opposite directions, while the two sliding blocks move in opposite directions, the connecting block drives the trigger block to move horizontally through the movable rod, the power upgrading power distribution equipment switch five-prevention interlocking device and the use method have the extension structure, the extension structure can control the trigger block to move through the cooperation between the opposite threaded rod and the sliding block, and the trigger block has two functions, the interlocking can be triggered when the trigger block is extended, and the interlocking can be forcibly released when the trigger block is retracted, so that maintenance is facilitated.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for power distribution equipment, specifically to a five-prevention interlocking device for power distribution equipment switches for capacity upgrading and its usage method. Background Technology

[0002] High-voltage switchgear refers to the switchgear used in power systems for power generation, transmission, distribution, power conversion and consumption, which plays a role in switching, control or protection. It mainly includes several categories such as high-voltage circuit breakers, high-voltage disconnecting switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof power distribution devices and high-voltage switchgear. High-voltage switchgear manufacturing is a crucial component of the power transmission and transformation equipment manufacturing industry, holding a vital position in the entire power industry. In the daily use of high-voltage distribution cabinets, five-prevention interlocking is frequently employed to protect the safety of personnel and the cabinets themselves. These five-prevention interlocking measures include: preventing accidental circuit breaker operation; preventing the opening and closing of disconnecting switches under load; preventing operators from accidentally entering energized compartments; preventing grounding wires from being connected while energized; and preventing the closing of disconnecting switches with grounding wires connected. The circuit breaker can only be opened or closed when the circuit breaker trolley is in the test or working position, and the trolley cannot be moved after the circuit breaker is closed, preventing accidental opening or closing of the circuit breaker under load. The circuit breaker trolley can only be moved from the test / disconnected position to the working position when the grounding switch is in the open position; and the grounding switch can only be closed when the circuit breaker trolley is in the test / disconnected position (the grounding switch can be equipped with a voltage display device). This system effectively prevents accidental closing of grounding switches while energized.

[0003] Many existing professional power distribution equipment uses a five-proof interlocking structure for safer operation and protection of personnel during daily use. The five-proof interlocking structure requires the user to rotate the threaded rod to trigger the movement. Because it is a mechanical linkage structure, if a malfunction occurs later, the internal lock will be difficult to disengage for repair. This requires professional maintenance personnel to forcibly dismantle or remove a large area of ​​the interlock, which takes a long time, affects work efficiency, and can damage the internal structure of the interlock, affecting subsequent use. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] This solves the problem of difficulty in disengaging the five-prevention interlock system when it malfunctions. Summary of the Invention

[0007] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of the present invention is: a five-proof interlocking device for power distribution equipment switch for capacity upgrading and its usage method, including a threaded tube, wherein the threaded tube is provided with a telescopic structure, the telescopic structure including a trigger block, a counter-threaded rod, a movable rod, a locking block, a slider, a partition plate and a connecting block. When a rotational force is applied to the counter-threaded rod, the counter-threaded rod can control the two sliders to move towards or opposite each other. At the same time as the two sliders move towards each other, the movable rod controls the connecting block to drive the trigger block to move horizontally.

[0008] Preferably, the top of the inner wall of the threaded tube is rotatably connected to a counter-threaded rod, a partition is provided in the middle of the front side of the counter-threaded rod, and locking blocks are fixedly connected to the top and bottom of the two counter-threaded rods respectively. There are two counter-threaded rods, which are disconnected from each other, and a slider is provided on the counter-threaded rod.

[0009] Preferably, a movable rod is rotatably connected to one side of the slider, a connecting block is rotatably connected to one side of the movable rod, a trigger block is fixedly connected to one side of the connecting block, and one side of the trigger block penetrates the threaded tube and extends to the outside of the threaded tube.

[0010] Preferably, a number of support plates are fixedly connected to the inner wall of the threaded tube, and a rotating rod is fixedly connected to the bottom of one of the opposing threaded rods. The rotating rod is rotatably connected to the support plate, and a limiting block is fixedly connected to the bottom of the rotating rod. The bottom of the limiting block penetrates through the threaded tube and extends to the outside of the threaded tube.

[0011] Preferably, the bottom of the threaded tube is provided with a handle, which is L-shaped. The top and one side of the handle are fixedly connected to a connector, and the top of the two connectors are provided with a slot, which is adapted to the limiting block.

[0012] Preferably, a spacer is fixedly connected to the top of the threaded tube, a protective head is fixedly connected to the top of the spacer, auxiliary rods are fixedly connected to both sides of the spacer, and guide rods are slidably connected to the top of the two auxiliary rods.

[0013] Preferably, a linkage structure is provided on one side of the inner wall of the threaded pipe. The linkage structure includes a telescopic block, a traction plate, a sliding groove, a sliding sleeve, a moving rod, a retaining ring, a fixing block, a linkage plate, a rotating block, and a snap-fit ​​block. When a downward pulling force is applied to the moving rod, the moving rod will control the traction plate to rotate and drive the linkage plate to rotate around the point where it rotates with the fixing block as the center. The linkage plate will control the snap-fit ​​block to move laterally.

[0014] Preferably, a sliding sleeve is fixedly connected to one side of the inner wall of the threaded pipe, and a moving rod is slidably connected to one side of the sliding sleeve. The moving rod has grooves on both its front and back sides, and the grooves are adapted to the sliding sleeve.

[0015] Preferably, the bottom of the movable rod is provided with a telescopic block, the bottom of the telescopic block is rotatably connected with a retaining ring, the top of the retaining ring is provided with a through groove, and the through groove is adapted to the limiting block.

[0016] Preferably, a fixing block is fixedly connected to the top of one side of the inner wall of the threaded tube, a linkage plate is rotatably connected to one side of the fixing block, a spring is fixedly connected to the bottom of one side of the linkage plate, one side of the spring is fixedly connected to one side of the inner wall of the threaded tube, a traction plate is rotatably connected to the bottom of the linkage plate, the bottom of the traction plate is rotatably connected to the top of the moving rod, a snap-fit ​​block is rotatably connected to the top of the linkage plate, a rotating block is rotatably connected inside the snap-fit ​​block, and a mating groove is provided on one side of the snap-fit ​​block and the mating groove is adapted to the snap-fit ​​block.

[0017] S1: When installing the circuit breaker into the cabinet, the user needs to control the rotation of the threaded tube by rotating the handle. The rotation of the threaded tube controls the handcart to move the circuit breaker into the cabinet. When the handcart moves to the limit position, the interlock will be activated by two trigger blocks. Then the user closes the cabinet door and moves the trolley away to use the distribution cabinet normally. When the distribution cabinet is used for a long time and the five-proof interlock is damaged, the internal linkage is difficult to contact because the trigger block is stuck. The user can first remove the handle from the limit block. After removal, the user holds the retaining ring and pulls it outward. After the retaining ring is under force, it drives the telescopic block to move outward. After the retaining ring moves out of the limit block, the lock on the rotating rod can be released.

[0018] S2: Users can choose which trigger block to release according to actual needs. When the user only needs to release the trigger block that locks the control cabinet, after pulling out the retaining ring, rotate the handle to align the connector on one side of the handle with the limit block. After alignment, insert them together and rotate the handle again. After the handle is under force, it drives the rotating rod to rotate. The rotating rod drives one of the opposing threaded rods to rotate. After the opposing threaded rods rotate, it controls the two sliders to move vertically towards each other. After the two sliders move, they will pull the movable rod. After the movable rod is under tension, it will rotate around the rotating connection point with the connecting block as the center and drive the connecting block to move laterally inward. The connecting block drives one of the trigger blocks to move laterally and retract into the inside of the threaded tube to release the lock. After the lock is released and maintenance is completed, the user can reverse the operation to move the trigger block back to its original position and continue to use it.

[0019] S3: If a circuit breaker lock is encountered and the control of the two trigger blocks on the interlock needs to be released simultaneously, the user needs to hold the retaining ring with their hand and continue to pull it outward. The retaining ring is under force and drives the moving rod to move vertically downward along the sliding sleeve through the telescopic block. The moving rod pulls the traction plate downward, and the traction plate pulls the linkage plate downward. After being under force, the linkage plate rotates around the rotation connection point with the fixed block as the center, while stretching the spring. The linkage plate controls the locking block to move laterally and align the square slot on one side with the locking block until the locking block moves completely into the rotating block. Then, the user uses their other hand to align the handle in the same way as above and then rotates it. At this time, the rotating rod will complete the control of the two opposing threaded rods through the intervention of the locking block. At this time, continuing to rotate the rotating rod will drive the two trigger blocks to retract inward simultaneously through the two opposing threaded rods, thus releasing the circuit breaker protection and the locking interlock.

[0020] Compared with the prior art, the embodiments of the present invention provide a telescopic structure inside the threaded tube. This telescopic structure controls the telescopic movement of the trigger block through the cooperation between the opposing threaded rod and the slider, giving the trigger block two functions: triggering the interlock when extended and forcibly releasing the interlock when retracted. This avoids the problem of mechanical linkages being difficult to disengage and unlock when the interlock device malfunctions. Because the five-proof interlock structure requires the user to rotate the threaded rod to trigger the movement, and due to its mechanical linkage structure, if a malfunction occurs later, internal locking makes it difficult to disengage the interlock and perform repairs. This requires professional repair personnel to forcibly dismantle or extensively remove the interlock, which is time-consuming, inefficient, and can damage the internal structure of the interlock, affecting subsequent use. The telescopic trigger block effectively solves this problem. The telescopic structure contains two trigger blocks, each controlling a different linkage. The user can choose to disengage one or both simultaneously, increasing user flexibility. A linkage structure is provided on the inner wall of the threaded tube, which can be activated by a snap-fit ​​block and linkage mechanism. The control of the interaction between the plate and the moving rod is integrated into the linkage within the telescopic structure. When the locking block is not engaged, the user can only control the retraction of one of the trigger blocks to prevent accidental operation. The bottom of the moving rod is equipped with a retractable and rotatable retaining ring. The retaining ring has two functions: one is to add a locking force to the rotating rod, so that when the user rotates the handle during daily use, the force of rotation is only applied to the threaded tube and does not affect the internal rotating rod; the second function is to act as a trigger for the entire linkage structure. Only by pulling the retaining ring can the entire linkage structure be triggered to start operating. The locking block is equipped with a rotating block. The locking block and the rotating block can engage with two opposing threaded rods without hindering their rotation. The bottom of the rotating rod is equipped with a limit block, which can be used with the handle. The handle has two connecting joints. During daily use, the shorter side can be used so that the longer side can increase the torque and make it easier for the user to rotate. During maintenance, the longer side can be used to effectively reduce the area used, making it more convenient for the user to operate without getting in the way. The connecting joints and the limit blocks are plug-in type and can be quickly disassembled when not in use to prevent collisions with the user.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0022] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of the threaded tube of the present invention;

[0024] Figure 2This is a schematic diagram of the external structure of the threaded tube of the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of the rotating rod of the present invention;

[0026] Figure 4 This is a schematic diagram of the telescopic structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the trigger block structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the opposing threaded rod structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the overall structure of the handle of the present invention;

[0030] Figure 8 This is a schematic diagram of the linkage structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the snap-fit ​​block structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the retaining ring structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the internal structure of the connector of the present invention;

[0034] Figure 12 This is a top view of the snap-fit ​​block structure of the present invention.

[0035] In the diagram: 1. Protective head; 2. Telescopic structure; 201. Trigger block; 202. Opposing threaded rod; 203. Movable rod; 204. Locking block; 205. Slider; 206. Partition plate; 207. Connecting block; 3. Linkage structure; 301. Telescopic block; 302. Traction plate; 303. Slide groove; 304. Sliding sleeve; 305. Moving rod; 306. Locking ring; 307. Fixing block; 308. Linkage plate; 309. Rotating block; 310. Locking block; 4. Threaded pipe; 5. Support plate; 6. Rotating rod; 7. Handle; 8. Spacer ring; 9. Auxiliary rod; 10. Guide rod; 11. Connecting joint; 12. Limiting block; 13. Locking groove. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0037] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0038] like Figures 1 to 11 As shown, the present invention provides a five-proof interlocking device and method for upgrading power distribution equipment switches, including a threaded tube 4. The threaded tube 4 has a telescopic structure 2 inside. The telescopic structure 2 includes a trigger block 201, a counter-threaded rod 202, a movable rod 203, a locking block 204, a slider 205, a partition 206, and a connecting block 207. When a rotational force is applied to the counter-threaded rod 202, the counter-threaded rod 202 can control the two sliders 205 to move towards or opposite each other. At the same time, the two sliders 205 move towards each other, and the movable rod 203 controls the connecting block 207 to drive the trigger block 201 to move horizontally. The telescopic structure 2 can control the trigger block 201 to move telescopically through the cooperation between the counter-threaded rod 202 and the slider 205, giving the trigger block 201 two functions: when extended, it can trigger the interlock; when retracted, it can forcibly release the interlock, avoiding the difficulty of releasing the control due to mechanical linkage when the interlocking device malfunctions.

[0039] The top of the inner wall of the threaded tube 4 is rotatably connected to a counter-threaded rod 202. A partition 206 is provided in the middle of the front of the counter-threaded rod 202. The top and bottom of the two counter-threaded rods 202 are fixedly connected to a locking block 204. There are two counter-threaded rods 202, which are disconnected from each other. A slider 205 is provided on the counter-threaded rod 202.

[0040] A movable rod 203 is rotatably connected to one side of the slider 205, a connecting block 207 is rotatably connected to one side of the movable rod 203, a trigger block 201 is fixedly connected to one side of the connecting block 207, and one side of the trigger block 201 passes through the threaded tube 4 and extends to the outside of the threaded tube 4.

[0041] Several support plates 5 are fixedly connected to the inner wall of the threaded tube 4. A rotating rod 6 is fixedly connected to the bottom of one of the opposing threaded rods 202. The rotating rod 6 is rotatably connected to the support plate 5. A limiting block 12 is fixedly connected to the bottom of the rotating rod 6. The bottom of the limiting block 12 passes through the threaded tube 4 and extends to the outside of the threaded tube 4.

[0042] The bottom of the threaded tube 4 is provided with a handle 7, which is L-shaped. The top and one side of the handle 7 are fixedly connected to a connector 11. The top of the two connectors 11 is provided with a slot 13, which is adapted to the limiting block 12. The handle 7 has two connectors 11. In daily use, the shorter side can be used so that the longer side can increase the torque and make it easier for the user to rotate. In maintenance, the longer side can be used to effectively reduce the area used, making it more convenient for the user to operate without getting in the way. The connector 11 and the limiting block 12 are plug-in type, and can be quickly disassembled when not in use to prevent bumping into the user.

[0043] A spacer 8 is fixedly connected to the top of the threaded pipe 4, a protective head 1 is fixedly connected to the top of the spacer 8, auxiliary rods 9 are fixedly connected to both sides of the spacer 8, and guide rods 10 are slidably connected to the top of the two auxiliary rods 9.

[0044] A linkage structure 3 is provided on one side of the inner wall of the threaded pipe 4. The linkage structure 3 includes a telescopic block 301, a traction plate 302, a sliding groove 303, a sliding sleeve 304, a moving rod 305, a retaining ring 306, a fixing block 307, a linkage plate 308, a rotating block 309, and a locking block 310. When a downward pulling force is applied to the moving rod 305, the moving rod 305 will control the traction plate 302 to rotate and drive the linkage plate 308 to rotate around the point where it rotates with the fixing block 307. The linkage plate 308 will control the locking block 310 to move laterally. The linkage structure 3 can control whether it intervenes in the linkage within the telescopic structure 2 through the cooperation between the locking block 310, the linkage plate 308, and the moving rod 305. When the locking block 310 does not intervene, the user can only control one of the trigger blocks 201 to retract, preventing user misoperation.

[0045] A sliding sleeve 304 is fixedly connected to one side of the inner wall of the threaded pipe 4. A moving rod 305 is slidably connected to one side of the sliding sleeve 304. Sliding grooves 303 are provided on both the front and back of the moving rod 305, and the sliding grooves 303 are adapted to the sliding sleeve 304.

[0046] The bottom of the moving rod 305 is provided with a telescopic block 301, and the bottom of the telescopic block 301 is rotatably connected with a retaining ring 306. The top of the retaining ring 306 is provided with a through groove, which is adapted to the limiting block 12. The retaining ring 306 has two functions. One is to add a locking force to the rotating rod 6, so that when the user rotates the handle 7 in daily use, the rotational force will only be applied to the threaded tube 4 and will not affect the internal rotating rod 6. The second function is to act as a trigger for the entire linkage structure 3. Only by pulling the retaining ring 306 can the entire linkage structure 3 be triggered to start operating.

[0047] A fixing block 307 is fixedly connected to the top of one side of the inner wall of the threaded tube 4. A linkage plate 308 is rotatably connected to one side of the fixing block 307. A spring is fixedly connected to the bottom of one side of the linkage plate 308. One side of the spring is fixedly connected to one side of the inner wall of the threaded tube 4. A traction plate 302 is rotatably connected to the bottom of the linkage plate 308. The bottom of the traction plate 302 is rotatably connected to the top of the moving rod 305. A snap-fit ​​block 310 is rotatably connected to the top of the linkage plate 308. A rotating block 309 is rotatably connected inside the snap-fit ​​block 310. A mating groove is provided on one side of the snap-fit ​​block 310 and the rotating block 309. The mating groove is adapted to the snap-fit ​​block 204. The snap-fit ​​block 310 and the rotating block 309 can be inserted into two opposing threaded rods 202 without hindering their rotation.

[0048] S1: When installing the circuit breaker into the cabinet, the user needs to control the rotation of the threaded tube 4 by rotating the handle 7. The rotation of the threaded tube 4 controls the handcart to move the circuit breaker into the cabinet. When the handcart moves to the limit position, the interlock will be activated by the two trigger blocks 201. Then the user closes the cabinet door and moves the cart away to use the distribution cabinet normally. When the distribution cabinet is used for a long time, the five-proof interlock is damaged. The internal linkage is blocked by the trigger block 201 and it is inconvenient to contact the interlock. The user can first remove the handle 7 from the limit block 12. After removal, the user holds the retaining ring 306 and pulls it outward. After the retaining ring 306 is under force, it drives the telescopic block 301 to move outward. After the retaining ring 306 moves out of the limit block 12, the lock on the rotating rod 6 can be released.

[0049] S2: The user can choose which trigger block 201 to release according to actual needs. When the user only needs to release the trigger block 201 that locks the control cabinet, after pulling out the retaining ring 306, the user can rotate the handle 7 to align the connector 11 on one side of the handle 7 with the limit block 12. After alignment, they can be inserted together and then the handle 7 can be rotated. After the handle 7 is subjected to force, it drives the rotating rod 6 to rotate. The rotating rod 6 drives one of the opposing threaded rods 202 to rotate. After the opposing threaded rod 202 rotates, it controls the two sliders 205 to move vertically towards each other. After the two sliders 205 move, they will pull the movable rod 203. After the movable rod 203 is subjected to tension, it will rotate around the rotating connection point with the connecting block 207 as the center and drive the connecting block 207 to move laterally inward. The connecting block 207 drives one of the trigger blocks 201 to move laterally and retract into the inside of the threaded tube 4 to release the lock. After the lock is released and maintenance is completed, the user can reverse the operation to move the trigger block 201 back to its original position and continue to use it.

[0050] S3: If a circuit breaker lock is encountered and the control of the interlock by both trigger blocks 201 needs to be simultaneously eliminated, the user needs to hold the retaining ring 306 by hand and continue to pull it outward. The retaining ring 306, under force, drives the moving rod 305 to move vertically downward along the sliding sleeve 304 through the telescopic block 301. The moving rod 305 pulls the traction plate 302 downward, and the traction plate 302 pulls the linkage plate 308 downward. After being subjected to force, the linkage plate 308 rotates around the rotational connection point with the fixed block 307 as the center, while stretching the spring. The linkage plate 308 controls the retaining ring 306. The connecting block 310 moves laterally to align the square slot on one side with the locking block 204 until the locking block 204 moves entirely into the rotating block 309. Then, the user uses the other hand to align the handle 7 in the same way and rotate it. At this time, the rotating rod 6 will control the two opposing threaded rods 202 through the intervention of the locking block 310. Continuing to rotate the rotating rod 6 will cause the two trigger blocks 201 to retract inward simultaneously through the two opposing threaded rods 202, thereby releasing the circuit breaker protection and locking interlock.

[0051] The working principle and usage process of this invention: When installing the circuit breaker into the cabinet, the user needs to rotate the handle 7 to control the rotation of the threaded tube 4. The rotation of the threaded tube 4 controls the handcart to move the circuit breaker into the cabinet. When the handcart reaches the limit position, the interlock will be activated by the two trigger blocks 201. Then, the user closes the cabinet door and moves the handcart away for normal use of the distribution cabinet. When the five-proof interlock is damaged after long-term use of the distribution cabinet, and the internal linkage is blocked by the trigger block 201, making it inconvenient to contact the interlock, the user can first remove the handle 7 from the limit block 12. After removal, the user holds the retaining ring 306 and pulls it outward. After the retaining ring 306 is under force, it drives the telescopic block 301 to move outward. After the retaining ring 306 completes its movement... The locking of the rotating rod 6 can be released by moving the limit block 12 out. The user can choose which trigger block 201 to release according to actual needs. When the user only needs to release the trigger block 201 that locks the control cabinet, after pulling out the retaining ring 306, the handle 7 can be rotated to align the connector 11 on one side of the handle 7 with the limit block 12. After alignment, they are inserted together and the handle 7 is rotated. The handle 7 is subjected to force, which drives the rotating rod 6 to rotate. The rotating rod 6 drives one of the opposing threaded rods 202 to rotate. After the opposing threaded rod 202 rotates, it controls the two sliders 205 to move vertically towards each other. After the two sliders 205 move, they will pull the movable rod 203. After the movable rod 203 is subjected to tension, it will rotate around the rotating connection point with the connecting block 207 as the center and drive the connecting block 207. 07 moves laterally inward, and connecting block 207 drives one of the trigger blocks 201 to move laterally and retract into the threaded tube 4 to release the lock. After the maintenance is completed, the user can reverse the operation to move the trigger block 201 back to its original position to continue use. If a circuit breaker lock is encountered and it is necessary to simultaneously release the interlocking control of two trigger blocks 201, the user needs to hold the retaining ring 306 by hand and continue to pull it outward. The retaining ring 306, under force, drives the moving rod 305 to move vertically downward along the sliding sleeve 304 through the telescopic block 301. The moving rod 305 pulls the traction plate 302 downward, and the traction plate 302 pulls the linkage plate 308 downward. After being subjected to force, the linkage plate 308 rotates around the rotational connection point with the fixed block 307 as the center, while stretching the spring. The linkage plate 308 controls the locking block 310 to move laterally, aligning the square slot on one side with the locking block 204 until the locking block 204 is fully moved into the rotating block 309. Then, the user uses their other hand to align the handle 7 as described above and rotate it. At this time, the rotating rod 6 will control the two opposing threaded rods 202 through the intervention of the locking block 310. Continuing to rotate the rotating rod 6 will cause the two trigger blocks 201 to retract inward simultaneously through the two opposing threaded rods 202, thereby releasing the circuit breaker protection and locking interlock. The user can then open the cabinet door to perform maintenance on the five-proof interlock, avoiding forced removal. After maintenance, the two trigger blocks 201 should be reset and the retaining ring 306 should be loosened.After the retaining ring 306 is released, the spring's own rebound force will cause the retaining block 310 and the moving rod 305 to return to their initial positions. Finally, the retaining ring 306 is re-engaged onto the limiting block 12, thus limiting the rotation of the rotating rod 6. During daily operation, turning the handle 7 will only control the rotation of the threaded tube 4.

[0052] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A five-prevention interlocking device for power distribution equipment switches for capacity upgrades, comprising a threaded pipe (4), characterized in that: The threaded tube (4) is internally equipped with a telescopic structure (2), which includes a trigger block (201), opposing threaded rods (202), a movable rod (203), a locking block (204), sliders (205), a partition (206), and a connecting block (207). When a rotational force is applied to the opposing threaded rods (202), the opposing threaded rods (202) can control the two sliders (205) to move towards or away from each other. The two sliders (205) move towards each other simultaneously, while being controlled by the movable rod (203). The connecting block (207) drives the trigger block (201) to move horizontally; the top of the inner wall of the threaded tube (4) is rotatably connected to the opposing threaded rod (202), and a partition (206) is provided in the middle of the front of the opposing threaded rod (202). The top and bottom of the two opposing threaded rods (202) are fixedly connected to the locking blocks (204). There are two opposing threaded rods (202), and the two opposing threaded rods (202) are disconnected. A slider (205) is provided on the opposing threaded rod (202).

2. The five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 1, characterized in that: A movable rod (203) is rotatably connected to one side of the slider (205), a connecting block (207) is rotatably connected to one side of the movable rod (203), a trigger block (201) is fixedly connected to one side of the connecting block (207), and one side of the trigger block (201) penetrates the threaded tube (4) and extends to the outside of the threaded tube (4).

3. The five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 1, characterized in that: Several support plates (5) are fixedly connected to the inner wall of the threaded tube (4). A rotating rod (6) is fixedly connected to the bottom of one of the opposing threaded rods (202). The rotating rod (6) is rotatably connected to the support plate (5). A limiting block (12) is fixedly connected to the bottom of the rotating rod (6). The bottom of the limiting block (12) penetrates through the threaded tube (4) and extends to the outside of the threaded tube (4).

4. The five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 1, characterized in that: The bottom of the threaded tube (4) is provided with a handle (7), which is L-shaped. The top and one side of the handle (7) are fixedly connected with connectors (11). The top of the two connectors (11) is provided with slots (13), which are adapted to the limiting block (12).

5. The five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 1, characterized in that: The top of the threaded tube (4) is fixedly connected to a spacer (8), the top of the spacer (8) is fixedly connected to a protective head (1), and auxiliary rods (9) are fixedly connected to both sides of the spacer (8). The tops of the two auxiliary rods (9) are slidably connected to guide rods (10).

6. The five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 1, characterized in that: A linkage structure (3) is provided on one side of the inner wall of the threaded pipe (4). The linkage structure (3) includes a telescopic block (301), a traction plate (302), a slide groove (303), a sliding sleeve (304), a moving rod (305), a retaining ring (306), a fixing block (307), a linkage plate (308), a rotating block (309), and a snap-fit ​​block (310). When a downward pulling force is applied to the moving rod (305), the moving rod (305) will control the traction plate (302) to rotate and drive the linkage plate (308) to rotate around the point of rotational connection with the fixing block (307). The linkage plate (308) will control the snap-fit ​​block (310) to move laterally.

7. A five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 6, characterized in that: A sliding sleeve (304) is fixedly connected to one side of the inner wall of the threaded tube (4), and a moving rod (305) is slidably connected to one side of the sliding sleeve (304). The moving rod (305) has a sliding groove (303) on both the front and back sides, and the sliding groove (303) is adapted to the sliding sleeve (304).

8. A five-prevention interlocking device for power distribution equipment switches for capacity upgrading according to claim 7, characterized in that: The bottom of the moving rod (305) is provided with a telescopic block (301), and the bottom of the telescopic block (301) is rotatably connected with a retaining ring (306). The top of the retaining ring (306) is provided with a through groove, which is adapted to the limiting block (12).

9. A method of using the five-prevention interlocking device for power distribution equipment switches based on claims 1-8, characterized in that: A fixing block (307) is fixedly connected to the top of one side of the inner wall of the threaded tube (4). A linkage plate (308) is rotatably connected to one side of the fixing block (307). A spring is fixedly connected to the bottom of one side of the linkage plate (308). One side of the spring is fixedly connected to one side of the inner wall of the threaded tube (4). A traction plate (302) is rotatably connected to the bottom of the linkage plate (308). The bottom of the traction plate (302) is rotatably connected to the top of the moving rod (305). A snap-fit ​​block (310) is rotatably connected to the top of the linkage plate (308). A rotating block (309) is rotatably connected inside the snap-fit ​​block (310). A docking groove is provided on one side of the snap-fit ​​block (310) and the rotating block (309). The docking groove is adapted to the snap-fit ​​block (204). S1: When installing the circuit breaker into the cabinet, the user needs to control the rotation of the threaded tube (4) by rotating the handle (7). The rotation of the threaded tube (4) controls the handcart to move the circuit breaker into the cabinet. When the handcart moves to the limit position, it will be controlled by two trigger blocks (201) to start the interlock. Then the user closes the cabinet door and moves the cart away to use the distribution cabinet normally. When the distribution cabinet is used for a long time, the five-proof interlock is damaged. The internal linkage is blocked by the trigger block (201) and it is inconvenient to contact the interlock. The user can first remove the handle (7) from the limit block (12). After removing it, the user holds the retaining ring (306) with his hand and pulls it outward. After the retaining ring (306) is under force, it drives the telescopic block (301) to move outward. When the retaining ring (306) moves out of the limit block (12), the lock on the rotating rod (6) can be released. S2: The user can choose which trigger block (201) to release according to actual needs. When the user only needs to release the trigger block (201) locked by the control cabinet, after pulling out the retaining ring (306), the user can rotate the handle (7) to align the connector (11) on one side of the handle (7) with the limit block (12). After alignment, they are inserted together and the handle (7) is rotated again. After the handle (7) is subjected to force, it drives the rotating rod (6) to rotate. The rotating rod (6) drives one of the opposing threaded rods (202) to rotate. The opposing threaded rod (202) rotates. Then control the two sliders (205) to move vertically towards each other. After the two sliders (205) move, they will pull the movable rod (203). After the movable rod (203) is pulled, it will rotate around the rotating connection point with the connecting block (207) as the center and drive the connecting block (207) to move laterally inward. The connecting block (207) drives one of the trigger blocks (201) to move laterally and retract into the inside of the threaded tube (4) to unlock. After the unlocking and maintenance are completed, the user can reverse the operation to move the trigger block 201 back to its original position and continue to use it. S3: If a circuit breaker lock is encountered and the control of the interlock by the two trigger blocks (201) needs to be eliminated simultaneously, the user needs to hold the retaining ring (306) with their hand and continue to pull it outward. The retaining ring (306) is subjected to force, which drives the moving rod (305) to move vertically downward along the sliding sleeve (304) through the telescopic block (301). The moving rod (305) pulls the traction plate (302) downward, and the traction plate (302) pulls the linkage plate (308) downward. After being subjected to force, the linkage plate (308) rotates around the rotational connection point with the fixed block (307) as the center, while stretching the spring. The linkage plate (308) controls The card-connecting block (310) moves laterally to align the square slot on one side with the card block (204) until the entire card block (204) moves into the rotating block (309). Then, the user uses the other hand to align the handle (7) in the same way as described above and rotates it. At this time, the rotating rod (6) will control the two opposing threaded rods (202) through the intervention of the card-connecting block (310). If the rotating rod (6) continues to rotate, the two opposing threaded rods (202) will drive the two trigger blocks (201) to retract inward at the same time to complete the release of the circuit breaker protection and the locking interlock.

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