A pressure plate structure for relay protection in a dual-drive distribution cabinet and its usage method

Abstract

This invention relates to a dual-drive distribution cabinet relay protection pressure plate structure and its usage method, belonging to the field of protection pressure plate technology. The invention features both electric and manual drive modes. For electric drive, a servo motor drives the transmission components to transmit power and change direction, causing the connecting piece to move in a circular motion around the first connecting column, achieving a linked execution function. The operator only needs to press the drive switch without contacting the internal components, thus solving the safety hazard problem for the operator. For manual drive, a manual adjustment component is designed. After the operator presses the lever, the transmission components on the upper part of the fixed plate disengage. Rotating the lever then allows the connecting piece to move in a circular motion around the first connecting column. The invention also incorporates a limiting component design, where a limiting rod limits the connecting piece, further ensuring the stability of the connection and preventing interference with electrical signals due to mechanical vibration.

Description

Technical Field

[0001] This invention belongs to the field of protection pressure plate technology, and in particular relates to a pressure plate structure for relay protection of a dual-drive distribution cabinet and its usage method. Background Technology

[0002] The protection pressure plate, also called the protection connector or trip pressure plate, is the bridge and link between the protection device and the external wiring. It is related to whether the protection function and the action output can play a normal role. Therefore, the pressure plate structure of the distribution cabinet relay protection is needed to protect the circuit devices.

[0003] Chinese patent number CN202320658587.X discloses a pressure plate structure for relay protection in a power distribution cabinet. In use, the bottom end of the connecting piece is first firmly attached to the equipment, and then a nut and mounting plate are used to securely connect the pieces, preventing oxidation and corrosion at the connection point. When operation is required, the slot on the metal pressure plate is pinched to engage with the threaded post. Then, the insulating nut is rotated to press and limit the metal pressure plate; the limiting block effectively restricts the movement of the metal pressure plate.

[0004] As can be seen from the above, the existing patent requires the metal pressure plate to be rotated and connected or disconnected by a hand-held pull ring. The anti-slip protrusions increase the friction between the pull ring and the hand, thereby preventing the hand from slipping off the pull ring and improving the safety of the operator during operation. The slider and groove allow the length of the metal pressure plate to be adjusted as needed, and at the same time, it prevents one end of the metal pressure plate from slipping out of the movable sleeve, making it safer to use.

[0005] However, this case still has the following shortcomings: When the protective pressure plate is in use, it is necessary to connect or disconnect the connecting pieces between the pressure plates if necessary. The existing patent requires the personnel to manually move the connecting pieces during operation. At this time, the connecting pieces are energized. Although the current between the connecting pieces is direct current, there is still a safety hazard when the operator comes into contact with other energized bodies.

[0006] Therefore, there is an urgent need for a new technical solution to address this problem. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a dual-drive distribution cabinet relay protection pressure plate structure and its usage method to solve the technical problem that when existing protection pressure plates are connected or interrupted, safety hazards still arise because operators may come into contact with other live parts.

[0008] A dual-drive relay protection pressure plate structure for a distribution cabinet includes a protection pressure plate. The protection pressure plate includes a connecting plate, a first connecting column, a second connecting column, and a connecting piece. The two ends of the connecting plate are fixedly connected to the lower parts of the first and second connecting columns, respectively. One end of the connecting piece is a rotating end, which is rotatably connected to the upper part of the first connecting column. The other end of the connecting piece is a hook end, which is provided with a hook structure and is hooked to the upper part of the second connecting column through the hook structure.

[0009] A pressure plate structure for relay protection of a dual-drive distribution cabinet further includes a movable connecting device, a manual adjustment component, a protective shell, and a limit switch; the connecting plate, the first connecting post, the second connecting post, and the portion of the connecting piece other than the connection points are all fitted with insulating shells; the movable connecting device, the manual adjustment component, and the limit switch are installed inside the protective shell, and a drive switch for controlling the servo motor to rotate in both forward and reverse directions is provided on the outside of the protective shell; a glass plate for observing the internal situation is provided on the protective shell.

[0010] The movable connecting device includes a servo motor and a transmission assembly. The servo motor is connected to the outer insulating shell of the connecting piece through the transmission assembly. A fixed plate is fixedly installed on the transmission assembly. Multiple fixed rods are fixedly installed on the bottom of the fixed plate. The multiple fixed rods are inserted into the corresponding holes on the rotating end of the insulating shell of the connecting piece. The holes are arranged around the first connecting post. The fixed plate rotates under the drive of the servo motor and the transmission assembly, and at the same time drives the connecting piece to rotate around the first connecting post as the axis. A limit switch is fixedly installed on one side of the connecting piece. After the connecting piece is connected to the second connecting post, it contacts the limit switch and triggers the limit switch, which sends a stop rotation command to the servo motor to stop the servo motor from rotating.

[0011] The manual adjustment assembly includes a paddle and a transmission rod assembly; the upper end of the transmission rod assembly is fixedly connected to the rotating end of the connecting piece, and the lower end of the transmission rod assembly is connected to one end of the paddle; the other end of the paddle extends out from an elongated hole in the protective shell for manual operation; when the movable connecting device is effective, the manual adjustment assembly moves with the connecting piece; when the movable connecting device fails, the paddle is pulled down, and the paddle drives the connecting piece to move down through the transmission rod assembly, causing the transmission components on the upper part of the fixed plate to disengage; then the paddle is rotated to allow the connecting piece to engage or disengage with the upper part of the second connecting post under manual control.

[0012] The transmission assembly includes a first sprocket, a chain, a second sprocket, a drive shaft, bearings, a first bevel gear, a second bevel gear, and a fixed disc. The shaft of the first sprocket is fixedly connected to the output end of the servo motor, and the first sprocket is driven by one side of the chain. The other side of the chain is driven by the second sprocket. One end of the drive shaft passes through the shaft of the second sprocket and is fixed, while the other end of the drive shaft is fixedly mounted with the first bevel gear. The first bevel gear and the second bevel gear are meshed together. The fixed disc is fixedly mounted on the lower part of the second bevel gear.

[0013] The inner cavity of the protective shell has two connecting seats fixedly installed, and a bearing is fixedly installed on one side of each of the two connecting seats; the inner wall of the bearing is rotatably connected to the drive shaft.

[0014] The transmission rod assembly includes a mounting plate, a connecting rod, a connecting arm, a fixing block, a first universal joint, a movable shaft, a second universal joint, a rotating rod, and a spring. One end of the connecting arm is hinged to one end of the fixing block, and the other end of the connecting arm is arranged perpendicularly to the connecting rod and fixedly connected to one end of the connecting rod. The other end of the fixing block is fixedly connected to the rotating end of the connecting piece. The other end of the connecting rod is fixedly connected to the support portion of the first universal joint. One end of the movable shaft is rotatably connected to the cross shaft of the first universal joint, and the other end of the movable shaft is rotatably connected to the cross shaft of the second universal joint. The support portion of the second universal joint is fixedly connected to one end of the rotating rod. A spring is fitted around the outside of the rotating rod, and the other end of the rotating rod is arranged perpendicularly to and fixedly connected to the lever. The mounting plate has a U-shaped structure, with an annular sleeve at one end, which is movably fitted around the upper end of the connecting rod. A through hole is provided at the other end of the mounting plate, which is fitted around the lower end of the rotating rod. One end of the spring abuts against the support portion of the second universal joint, and the other end of the spring abuts against the inner wall of the other end of the mounting plate.

[0015] A pressure plate structure for relay protection of a dual-drive distribution cabinet further includes a limiting component installed inside a protective housing; the limiting component includes a manual drive component and a limiting rod connected to the manual drive component; the manual drive component drives the limiting rod, causing the limiting rod to push the connected hook structure to fit tightly against the second connecting column.

[0016] The manual drive assembly includes a mounting base, a rotating shaft, a worm gear, a worm wheel, a linkage shaft, and a handle. The mounting base is fixedly mounted on the protective shell, and two mounting ears for mounting the rotating shaft are provided on the upper part of one side of the mounting base. One end of the rotating shaft passes through the mounting ear and is rotatably connected to the mounting ear. The other end of the rotating shaft is fixedly mounted with a handle. The worm gear is fixedly fitted in the middle of the rotating shaft. The worm gear meshes with the worm wheel located below it. The linkage shaft is fixed at the center of the worm wheel. One end of the linkage shaft is arranged perpendicularly to and fixedly connected to the limiting rod, and the other end of the linkage shaft is rotatably connected to the mounting base.

[0017] A method for using a dual-drive distribution cabinet relay protection pressure plate structure, used to operate the dual-drive distribution cabinet relay protection pressure plate structure, including both electric drive and manual drive methods;

[0018] The electric drive includes the following steps:

[0019] S1. Connection complete;

[0020] Press the drive switch to rotate in the forward direction to start the servo motor. The servo motor drives the fixed plate to rotate through the transmission component. The fixed plate applies the rotation state to the connecting piece, causing the connecting piece to rotate clockwise around the first connecting post as the axis until the hook of the connecting piece is engaged with the second connecting post, completing the connection state.

[0021] S2. Perform connection limit;

[0022] After the connected pieces are hung up, they come into contact with the actuator of the limit switch. The limit switch sends an electrical signal to the servo motor, causing it to lose power. The position of the actuator is preset on the limit switch to control the rotation distance after the connected pieces are hung up.

[0023] S3, The disconnected state returns to its original position;

[0024] Press the reverse rotation drive switch to turn on the servo motor and enter the interrupt state. The servo motor rotates counterclockwise and, through the transmission component and the fixed plate, makes the connecting piece rotate counterclockwise around the first connecting column as the axis until it returns to its original position and stops.

[0025] The manual driving process includes the following steps:

[0026] S1. Pull the lever down. The lever drives the connecting piece to move down through the transmission rod assembly, causing the transmission components on the upper part of the fixed plate to disengage.

[0027] S2. While keeping the pull down, rotate the lever to drive the connecting piece to engage or disengage from the upper part of the second connecting post through the transmission rod assembly.

[0028] Through the above design scheme, the present invention can bring the following beneficial effects:

[0029] 1. This invention, through the structural design of the movable connecting device, uses a servo motor to drive the transmission components for power transmission and direction change, which in turn drives the fixed plate to rotate accordingly. This causes the fixed plate to drive the connecting pieces to move in a circular motion around the first connecting column, achieving a linkage execution function. The operator only needs to press the drive switch without contacting the internal components, thus solving the safety hazard problem for the operator.

[0030] 2. This invention, through the structural design of the manually adjustable component, allows the connecting piece to move in tandem after the operator presses the lever, causing the transmission rod assembly to disengage from the transmission components on the upper part of the fixed plate. Rotating the lever then allows the connecting piece to move in a circular motion around the first connecting post. Since most of the pressure plate structure has an insulating shell, there is no safety hazard when the operator comes into contact with other live parts.

[0031] 3. This invention, through the structural design of the limiting component, allows the rotating shaft to rotate when the operator rotates the handle, thereby driving the worm gear on the rotating shaft to rotate synchronously. During operation, the worm gear cooperates with the worm wheel to transmit rotational power to the linkage shaft. At this time, the linkage shaft drives the limiting rod to move relative to each other, so that the limiting rod limits the connecting piece on one side, further ensuring the stability of the connection and preventing interference to the electrical signal due to mechanical vibration or other reasons. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] Figure 1 This is a schematic diagram of the overall structure of a pressure plate structure for relay protection of a dual-drive distribution cabinet in this invention.

[0034] Figure 2 This is an exploded view of the overall structure of a pressure plate structure for relay protection of a dual-drive distribution cabinet according to the present invention.

[0035] Figure 3 This is an exploded view of the internal structure of a pressure plate structure for relay protection in a dual-drive distribution cabinet according to the present invention.

[0036] Figure 4 This is a schematic diagram of the movable connection device structure of a pressure plate structure for relay protection of a dual-drive distribution cabinet in this invention.

[0037] Figure 5 This is an exploded view of the manual adjustment component structure of a pressure plate structure for relay protection in a dual-drive distribution cabinet according to the present invention.

[0038] Figure 6 This is a schematic diagram of the limiting component structure of a pressure plate structure for relay protection of a dual-drive distribution cabinet in this invention;

[0039] Figure 7 This is a schematic diagram of a protection pressure plate structure for a dual-drive distribution cabinet relay protection pressure plate structure according to the present invention;

[0040] Figure 8 This is an exploded view of the protective shell structure of a pressure plate structure for relay protection of a dual-drive distribution cabinet according to the present invention.

[0041] In the diagram: 1. Protective pressure plate; 11. Insulating shell; 12. First connecting post; 13. Second connecting post; 14. Connecting piece; 15. Threaded post; 16. Limit switch; 2. Movable connecting device; 21. Servo motor; 22. First sprocket; 23. Chain; 24. Second sprocket; 25. Drive shaft; 26. Bearing; 27. Connecting seat; 28. First bevel gear; 29. ​​Second bevel gear; 201. Fixed plate; 202. Fixed rod; 3. Manual Adjustment assembly; 31. Mounting plate; 32. Connecting rod; 33. Connecting arm; 34. Fixing block; 35. First universal joint; 36. Movable shaft; 37. Second universal joint; 38. Rotating rod; 39. Spring; 301. Paddle; 4. Limiting assembly; 41. Mounting base; 42. Rotating shaft; 43. Worm gear; 44. Worm wheel; 45. Linkage shaft; 46. Limiting rod; 47. Rotating handle; 5. Protective shell; 511. Glass plate; 522. Drive switch. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1 to 8 As shown, a pressure plate structure for relay protection of a dual-drive distribution cabinet includes a protection pressure plate 1, a movable connection device 2, a manual adjustment component 3, a limit component 4, and a protective shell 5.

[0044] The protective pressure plate 1 includes a connecting plate, a first connecting post 12, a second connecting post 13, and a connecting piece 14. The two ends of the connecting plate are fixedly connected to the lower parts of the first connecting post 12 and the second connecting post 13, respectively. One end of the connecting piece 14 is a rotating end, which is rotatably connected to the upper part of the first connecting post 12. The other end of the connecting piece 14 is a hook end, which is provided with a hook structure and is hooked to the upper part of the second connecting post 13 through the hook structure.

[0045] The connecting plate, the first connecting post 12, the second connecting post 13, and the connecting piece 14, except for their respective connection points, are all fitted with insulating shells 11. The protective pressure plate 1, the movable connecting device 2, the manual adjustment assembly 3, and the limiting assembly 4 are all installed inside the protective shell 5. During operation, the entire assembly is protected by the protective shell 5 to prevent safety hazards and to provide appropriate support for the internal components.

[0046] The movable connecting device 2 is located on one side of the protective pressure plate 1, and includes a servo motor 21. A first sprocket 22 is fixedly mounted on the output end of the servo motor 21. A chain 23 is driven to one side of the first sprocket 22. A second sprocket 24 is driven to the other side of the chain 23. A drive shaft 25 is fixedly mounted through and fixed to one side of the middle of the second sprocket 24. A first bevel gear 28 is fixedly mounted on one end of the drive shaft 25. A second bevel gear 29 is meshed with the wheel side of the first bevel gear 28. A fixed plate 201 is fixedly mounted on the bottom of the second bevel gear 29. Several fixed rods 202 are fixedly mounted on the bottom of the fixed plate 201. The multiple fixed rods 202 are inserted and fixed one-to-one with the insertion holes provided on the rotating end of the insulating shell 11 of the connecting piece 14. The insertion holes are arranged around the first connecting post 12. During operation, the second bevel gear 29 is rotated by the transmission of the first bevel gear 28. The second bevel gear 29 drives the fixed disk 201 to perform circumferential movements, thereby causing the connecting piece 14 to perform corresponding rotational movements.

[0047] The manual adjustment assembly 3 includes a mounting plate 31. A connecting rod 32 is movably mounted on one side of the mounting plate 31. A connecting arm 33 is fixedly mounted on the top of the connecting rod 32. A fixing block 34 is hinged to one end of the connecting arm 33. A connecting piece 14 is fixedly mounted on one side of the fixing block 34. A first universal joint 35 is fixedly mounted on the bottom of the connecting rod 32. A movable shaft 36 is movably mounted on the bottom of the first universal joint 35. A second universal joint 37 is movably mounted on the bottom end of the movable shaft 36. A rotating rod 38 is fixedly mounted on the bottom of the second universal joint 37. A lever 301 is fixedly mounted on the bottom of the rotating rod 38. A spring 39 is fixedly mounted on the top of the lower side plate of the mounting plate 31. The spring 39 is fitted over the rotating rod 38, and the top of the spring 39 abuts against the lower part of the second universal joint 37.

[0048] During operation, pressing down on the paddle 301 causes the spring 39 to deform under pressure, converting the kinetic energy of the external force into stored elastic energy. The paddle 301, through the rotating rod 38, the second universal joint 37, the movable shaft 36, the first universal joint 35, the connecting rod 32, the connecting arm 33, and the fixed block 34, causes the connecting piece 14 to drive the fixed disk 201 and the second bevel gear 29 downwards, interrupting the connection between the first bevel gear 28 and the second bevel gear 29. Maintaining the pressed-down state and rotating the paddle 301 causes the connecting piece 14 to rotate accordingly. After rotating to the preset position, releasing the paddle 301 releases the elastic energy stored in the spring 39, causing the spring 39 to return to its original shape, and restoring the transmission between the first bevel gear 28 and the second bevel gear 29.

[0049] The limiting assembly 4 includes a mounting base 41. A rotating shaft 42 is movably mounted through one side of the mounting base 41. A handle 47 is fixedly mounted at one end of the rotating shaft 42. A worm gear 43 is movably mounted through and fixedly mounted on the rotating shaft 42. A worm wheel 44 is driven and connected to the worm gear 43. A linkage shaft 45 is movably mounted through and fixedly mounted on one side of the middle of the worm wheel 44. A limiting rod 46 is fixedly mounted at one end of the linkage shaft 45, and the other end of the linkage shaft 45 is connected to the mounting base 41 via a bearing.

[0050] During operation, cranking the handle 47 drives the worm gear 44 via the worm 43, which in turn drives the linkage shaft 45 to rotate, causing the limiting rod 46 fixed on the linkage shaft 45 to move in a circular motion. During the rotation of the limiting rod 46, operation stops when one side of the limiting rod 46 comes into contact with the connecting piece 14, thus limiting the connection piece 14. When not in use, cranking the handle 47 continues to separate the limiting rod 46 from the connecting piece 14. The limiting component 4 is more commonly used when equipment vibration is high, causing the connecting piece 14 and the second connecting column 13 to loosen due to vibration.

[0051] In addition, a threaded post 15 is fixedly installed at the lower part of the insulating shell 11 of the connecting plate. The lower ends of the threaded post 15, the first connecting post 12, and the second connecting post 13 all penetrate the protective shell 5, which is used to fix the entire equipment to the high voltage cabinet.

[0052] The limit switch 16 is fixedly mounted on the protective housing 5 and located on one side of the connecting piece 14. A servo motor 21 is electrically connected to one side of the limit switch 16. During operation, after the connecting piece 14 is engaged with the second connecting post 13, it contacts the contact head of the limit switch 16, causing the limit switch 16 to operate and sending an electrical signal to the servo motor 21 to stop it from operating.

[0053] A glass plate 511 is fixedly installed on the top of the protective shell 5. Two drive switches 522 are also fixedly installed on the top of the protective shell 5, controlling the servo motors 21 to rotate in the forward or reverse directions respectively. The drive switches 522 are electrically connected to the servo motors 21. The installation of the glass plate 511 on the protective shell 5 facilitates personnel to observe the internal operation, and the drive switches 522 facilitate the control of the servo motors 21.

[0054] The servo motor 21, mounting plate 31, and mounting base 41 are fixedly installed on the inner wall of the protective shell 5. Two connecting seats 27 are also fixedly installed on the inner wall of the protective shell 5. Bearings 26 are fixedly installed on one side of each of the two connecting seats 27. The inner wall of the bearings 26 is rotatably connected to the drive shaft 25.

[0055] A method for using a pressure plate structure for relay protection in a dual-drive distribution cabinet includes the following steps:

[0056] Step 1: The electric drive begins operation.

[0057] The servo motor 21 is driven by pressing the drive switch 522. When the servo motor 21 is working, it drives the first sprocket 22 to rotate. The chain 23 connected to the first sprocket 22 transmits power to the second sprocket 24, causing the second sprocket 24 to drive the transmission shaft 25 to rotate relative to it. At this time, the first bevel gear 28 at the other end of the transmission shaft 25 is linked to the second bevel gear 29, changing the direction of rotation. This causes the second bevel gear 29 to drive the fixed disk 201 to rotate accordingly. The bottom of the fixed disk 201 is fixed with a connecting piece 14 by a fixing rod 202, which links the connecting piece 14, causing the connecting piece 14 to move in a circular motion around the first connecting post 12. When driving the servo motor 21, the forward or reverse drive switch 522 can be selected as needed to selectively engage or disengage the connecting piece 14 from the second connecting post 13. When the connecting piece 14 is attached, one side of the connecting piece 14 comes into contact with the limit switch 16. When it moves to a certain distance, the limit switch 16 is triggered, which controls the servo motor 21 to cut off the power.

[0058] Step two, manually drive the system to operate:

[0059] When the movable connecting device 2 malfunctions, the connecting piece 14 cannot be driven to move by the servo motor 21. At this time, the operator presses down the lever 301, causing the rotating rod 38 to drive the movable shaft 36 through the second universal joint 37. One end of the movable shaft 36 rotates around the connection of the first universal joint 35. When it moves to the maximum angle, it is limited and cannot move further. At this time, the movable shaft 36 drives the first universal joint 35 to move up and down accordingly. The first universal joint 35, the connecting rod 32, and the connecting arm 33 drive the connecting piece 14, the fixed plate 201, and the second bevel gear 29 connected on one side to descend accordingly, causing the connection between the first bevel gear 28 and the second bevel gear 29 to be interrupted. While maintaining the downward pressure, the lever 301 is rotated, causing the connecting rod 32 to rotate. The hinge between the connecting arm 33 and the fixed block 34 creates a linkage with the connecting piece 14, causing the connecting piece 14 to move in a circular motion around the first connecting post 12, connecting or disconnecting the connecting piece 14 from the second connecting post 13.

[0060] Step 3, Limit Protection:

[0061] When the connecting piece 14 is connected to the second connecting post 13, other factors may cause the connection between the connecting piece 14 and the second connecting post 13 to be interrupted, thus failing to achieve the trip protection effect. By rotating the handle 47, the rotating shaft 42 rotates, driving the worm 43 on the rotating shaft 42 to rotate synchronously. During operation, the worm 43 cooperates with the worm wheel 44, transmitting rotational power to the linkage shaft 45. At this time, the linkage shaft 45 drives the limit rod 46 to rotate, limiting the connecting piece 14 on one side. The worm 43 and the worm wheel 44 have a self-locking property. When the lead angle of the worm 43 is less than the equivalent friction angle between the meshing teeth, the mechanism has a self-locking property, achieving reverse self-locking, meaning that only the worm 43 can drive the worm wheel 44, and not the worm wheel 44 can drive the worm 43, thus providing a safety protection function.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A pressure plate structure for relay protection of a dual-drive distribution cabinet, comprising a protection pressure plate (1), wherein the protection pressure plate (1) comprises a connecting plate, a first connecting post (12), a second connecting post (13), and a connecting piece (14), wherein both ends of the connecting plate are fixedly connected to the lower parts of the first connecting post (12) and the second connecting post (13), one end of the connecting piece (14) is a rotating end, the rotating end is rotatably connected to the upper part of the first connecting post (12), and the other end of the connecting piece (14) is a hook end, the hook end is provided with a hook structure, and is hooked to the upper part of the second connecting post (13) through the hook structure; characterized in that: It also includes a movable connecting device (2), a manual adjustment component (3), a protective shell (5), and a limit switch (16); the connecting plate, the first connecting post (12), the second connecting post (13), and the connecting piece (14) are all fitted with insulating shells (11) at the parts other than each connection point; the movable connecting device (2), the manual adjustment component (3), and the limit switch (16) are installed inside the protective shell (5); a drive switch (522) is provided on the outside of the protective shell (5) to control the servo motor (21) to rotate in both forward and reverse directions; and a glass plate (511) is provided on the protective shell (5) for observing the internal situation. The movable connecting device (2) includes a servo motor (21) and a transmission assembly. The servo motor (21) is connected to the insulating shell (11) outside the connecting piece (14) through the transmission assembly. A fixed plate (201) is fixedly installed on the transmission assembly. Multiple fixed rods (202) are fixedly installed on the bottom of the fixed plate (201). The multiple fixed rods (202) are inserted into the sockets provided on the rotating end of the insulating shell (11) of the connecting piece (14) in a one-to-one correspondence. The sockets are centered on the first connecting post (12). The arrangement is around the perimeter; the fixed disk (201) rotates under the drive of the servo motor (21) and the transmission assembly, and at the same time drives the connecting piece (14) to rotate around the first connecting post (12) as the axis; the limit switch (16) is fixedly installed on one side of the connecting piece (14). After the connecting piece (14) is connected to the second connecting post (13), it contacts the limit switch (16) and triggers the limit switch (16). The trigger limit switch (16) sends a stop rotation command to the servo motor (21) so that the servo motor (21) stops rotating; The manual adjustment component (3) includes a paddle (301) and a transmission rod assembly; the upper end of the transmission rod assembly is fixedly connected to the rotating end of the connecting piece (14), and the lower end of the transmission rod assembly is connected to one end of the paddle (301); the other end of the paddle (301) extends out from the elongated hole on the protective shell (5) for manual operation; when the movable connecting device (2) is effective, the manual adjustment component (3) moves with the connecting piece (14); when the movable connecting device (2) fails, the paddle (301) is pulled down, and the paddle (301) drives the connecting piece (14) to move down through the transmission rod assembly, causing the transmission components on the upper part of the fixed plate (201) to disengage; then the paddle (301) is rotated so that the connecting piece (14) can be engaged or disengaged from the upper part of the second connecting post (13) under manual control.

2. The pressure plate structure for relay protection of a dual-drive distribution cabinet according to claim 1, characterized in that: The transmission assembly includes a first sprocket (22), a chain (23), a second sprocket (24), a transmission shaft (25), a bearing (26), a first bevel gear (28), a second bevel gear (29), and a fixed disk (201); the shaft of the first sprocket (22) is fixedly connected to the output end of the servo motor (21), and the first sprocket (22) is connected to one side of the chain (23); the other side of the chain (23) is connected to the second sprocket (24); one end of the transmission shaft (25) passes through the shaft of the second sprocket (24) and is fixed, and the other end of the transmission shaft (25) is fixedly mounted with the first bevel gear (28); the first bevel gear (28) is meshed with the second bevel gear (29); the lower part of the second bevel gear (29) is fixedly mounted with the fixed disk (201).

3. The pressure plate structure for relay protection of a dual-drive distribution cabinet according to claim 2, characterized in that: The inner cavity of the protective shell (5) is fixedly installed with two connecting seats (27), and a bearing (26) is fixedly installed on one side of each of the two connecting seats (27); the inner wall of the bearing (26) is rotatably connected to the drive shaft (25).

4. The pressure plate structure for relay protection of a dual-drive distribution cabinet according to claim 1, characterized in that: The transmission rod assembly includes a mounting plate (31), a connecting rod (32), a connecting arm (33), a fixing block (34), a first universal joint (35), a movable shaft (36), a second universal joint (37), a rotating rod (38), and a spring (39); one end of the connecting arm (33) is hinged to one end of the fixing block (34), and the other end of the connecting arm (33) is arranged perpendicularly to the connecting rod (32) and fixedly connected to one end of the connecting rod (32); the other end of the fixing block (34) is fixedly connected to the rotating end of the connecting piece (14); the other end of the connecting rod (32) is fixedly connected to the bracket part of the first universal joint (35); one end of the movable shaft (36) is rotatably connected to the cross shaft of the first universal joint (35), and the movable shaft (36) is rotatably connected to the cross shaft of the first universal joint (35). The other end of the spring (39) is rotatably connected to the cross shaft of the second universal joint (37); the bracket part of the second universal joint (37) is fixedly connected to one end of the rotating rod (38); the outer side of the rotating rod (38) is fitted with a spring (39), and the other end of the rotating rod (38) is arranged perpendicularly to and fixedly connected to the paddle (301); the mounting plate (31) is a U-shaped structure, one end of the mounting plate (31) is provided with an annular sleeve, the annular sleeve is movably fitted outside the upper end of the connecting rod (32), the other end of the mounting plate (31) is provided with a through hole, the through hole is fitted outside the lower end of the rotating rod (38); one end of the spring (39) abuts against the bracket part of the second universal joint (37), and the other end of the spring (39) abuts against the inner wall of the other end of the mounting plate (31).

5. The pressure plate structure for relay protection of a dual-drive distribution cabinet according to claim 1, characterized in that: It also includes a limiting component (4) installed inside the protective shell (5); the limiting component (4) includes a manual drive component and a limiting rod (46) connected to the manual drive component; the manual drive component drives the limiting rod (46) so that the limiting rod (46) pushes the hook structure of the connecting piece (14) to fit tightly against the second connecting post (13).

6. The pressure plate structure for relay protection of a dual-drive distribution cabinet according to claim 5, characterized in that: The manual drive assembly includes a mounting base (41), a rotating shaft (42), a worm (43), a worm wheel (44), a linkage shaft (45), and a handle (47). The mounting base (41) is fixedly mounted on the protective shell (5). Two mounting ears for mounting the rotating shaft (42) are provided on the upper part of one side of the mounting base (41). One end of the rotating shaft (42) passes through the mounting ear and is rotatably connected to the mounting ear. The other end of the rotating shaft (42) is fixedly mounted with a handle (47). The worm (43) is fixedly fitted in the middle of the rotating shaft (42). The worm (43) is meshed with the worm wheel (44) located below it. The linkage shaft (45) is fixed at the center of the worm wheel (44). One end of the linkage shaft (45) is arranged perpendicularly to the limiting rod (46) and fixedly connected. The other end of the linkage shaft (45) is rotatably connected to the mounting base (41).

7. A method of using a dual-drive distribution cabinet relay protection pressure plate structure, for operating the dual-drive distribution cabinet relay protection pressure plate structure as described in claim 1, characterized in that: It includes both electric drive and manual drive modes. The electric drive includes the following steps: S1. Connection complete; Press the forward rotation drive switch (522) to start the servo motor (21). The servo motor (21) drives the fixed disk (201) to rotate through the transmission component. The fixed disk (201) applies the rotation state to the connecting piece (14), causing the connecting piece (14) to rotate clockwise around the first connecting post (12) until the hook of the connecting piece (14) is engaged with the second connecting post (13), thus completing the connection state. S2. Perform connection limit; After the connecting piece (14) is hung up, it contacts the transmission of the limit switch (16). The limit switch (16) sends an electrical signal to the servo motor (21) to interrupt its power. The position of the transmission is preset on the limit switch (16) to control the rotation distance of the connecting piece (14) after it is hung up. S3, The disconnected state returns to its original position; Press the reverse rotation drive switch (522), the servo motor (21) is turned on and enters the interrupt state. The servo motor (21) rotates counterclockwise and, through the transmission component and the fixed plate (201), the connecting piece (14) rotates counterclockwise around the first connecting column (12) as the axis until it returns to its original position and stops. The manual driving process includes the following steps: S1. Pull down the lever (301). The lever (301) drives the connecting piece (14) to move down through the transmission rod assembly, causing the transmission components on the upper part of the fixed plate (201) to disengage. S2. While keeping the pull down, rotate the lever (301) to drive the connecting piece (14) to engage or disengage from the upper part of the second connecting post (13) through the transmission rod assembly.

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