Interlocking mechanism between grounding switch and rear door of switch cabinet

Abstract

The present invention discloses an interlocking mechanism between a switch cabinet grounding switch and a rear door, comprising an operating shaft for closing and opening the grounding switch, and also comprising a limit device and a linkage device, wherein the limit device comprises: a first guide rod, a second guide rod, an interlocking pressure block, and a third guide rod, wherein the lower end of the third guide rod is connected to a moving block, and the upper end is connected to a limit block; a fixed crank arm and a first transmission crank arm are fixedly connected to the operating shaft, wherein the fixed crank arm is located at the upper section of the limit block stroke, and the limit block blocks the fixed crank arm when it moves up to the upper section; the linkage device comprises: a connecting rod, a second transmission crank arm, and when the operating shaft rotates, the first transmission crank arm, the connecting rod and the second transmission crank arm drive the first guide rod to rotate; and the first guide rod, the second guide rod and the third guide rod are connected to respective reset modules. The present invention can avoid the risk of short circuit in the switch cabinet and improve safety.

Description

Technical Field

[0001] The invention relates to an interlocking mechanism between a switch cabinet grounding switch and a rear door. Background Art

[0002] The design of the switch cabinet grounding switch and rear door must meet the "five protection" requirements of "preventing accidental entry into live compartments". It needs to be achieved that: the rear door can only be opened when the grounding switch is closed; when the rear door is opened, the grounding switch cannot be opened, and when the rear door is closed, the grounding switch can be opened.

[0003] Figure 1 2 is a schematic diagram of the principle of a grounding switch and rear door interlocking mechanism in the prior art. The operating shaft 21 of the switch cabinet 23 rotates to complete the closing and opening operations of the grounding switch 22. The operating shaft 21 is also connected to the rear transmission shaft 24. The central axis of the rear transmission shaft 24 coincides with the operating shaft 21. When the operating shaft 21 controls the grounding switch to open, the rear transmission shaft 24 rotates, and the locking block at the end of the rear transmission shaft 24 locks the rear door 20, making it impossible to open the rear door. After the rear door 20 is opened, the rear transmission shaft 24 restricts the rotation of the operating shaft 21, and the grounding switch cannot be opened. In the interlocking mechanism, if the rear transmission shaft 24 and the operating shaft 21 are made of metal, the minimum air gap between the transmission shaft 24, the operating shaft 21 and the copper bar 25 on the line side of the switch cabinet needs to reach 125mm to meet the requirements of the power standard DL / T 404-2007 "3.6kV ~ 40.5kV AC metal-enclosed switchgear and control equipment" Section 5.106 for 12kV switchgear. However, due to the characteristics of the switchgear structure itself, the gap requirement may not be met. The current treatment method is to cover the transmission shaft 24 and the operating shaft 21 with an insulating tube, or replace them with an insulating shaft, so that the interlocking mechanism meets the requirements of the power standard DL / T 404-2007 "3.6kV ~ 40.5kV AC metal-enclosed switchgear and control equipment" Section 5.106 for 12kV switchgear, the minimum air gap between the live body and the insulating shaft is not less than 30mm. However, in actual engineering applications, the use of insulating shafts has the following problems: some people in the industry use inferior insulating tubes or insulating shafts, and the insulation decreases over time, causing short circuit accidents. In severe cases, the switch cabinet explodes, with disastrous consequences and great safety hazards. In order to completely avoid the above safety hazards, a new interlocking mechanism for the grounding switch and the rear door has been developed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an interlocking mechanism between a switch cabinet grounding switch and a rear door to avoid the risk of short circuit in the switch cabinet.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0006] An interlocking mechanism between a switch cabinet grounding switch and a rear door comprises an operating shaft for closing and opening the grounding switch, and is characterized in that it also comprises a limit device and a linkage device.

[0007] For ease of description, in the present invention, the two ends of the first guide rod and the second guide rod are respectively named as the first end and the second end, and the two ends of the third guide rod are respectively named as the upper end and the lower end.

[0008] The limiting device comprises:

[0009] The first guide rod can move left and right and rotate, and is connected with a first locking block and a second locking block. The first locking block is connected to the first end of the first guide rod and is used to cooperate with the rear door of the switch cabinet to lock the rear door. The second locking block is located between the first end and the second end of the first guide rod and is used to lock the first guide rod to prevent the first guide rod from moving after the rear door is opened.

[0010] The second guide rod has a first end rotatably connected to the second end of the first guide rod. When the first guide rod moves left and right, the second guide rod can move left and right together with the first guide rod. When the first guide rod rotates, the second guide rod will not rotate with the first guide rod.

[0011] The interlocking pressure block is connected to the second end of the second guide rod and can move left and right together with the second guide rod.

[0012] The third guide rod has a lower end connected to a moving block matched with the interlocking pressure block, and the moving block moves up and down with the left and right movement of the interlocking pressure block. When the first guide rod moves to the right, the moving block is pressed down by the interlocking pressure block to move the moving block downward, and when the first guide rod moves to the left, the moving block moves upward, so that the third guide rod moves up and down. The upper end of the third guide rod is connected to a limit block, and the stroke of the limit block moving up and down is divided into an upper section and a lower section;

[0013] A fixed crank arm and a first transmission crank arm are fixedly connected to the operating shaft, the fixed crank arm is located at the upper section of the limit block stroke, when the limit block moves up to the upper section, the fixed crank arm and the operating shaft are prevented from rotating, when the limit block moves down to the lower section, the fixed crank arm is no longer blocked by the limit block and can rotate with the operating shaft;

[0014] The linkage device comprises:

[0015] A connecting rod is hinged to the first transmission crank arm,

[0016] A second transmission crank arm, one end of which is hinged to the connecting rod and the other end of which is fixedly connected to the first guide rod. When the operating shaft rotates, the first guide rod is driven to rotate through the first transmission crank arm, the connecting rod and the second transmission crank arm;

[0017] The first guide rod, the second guide rod and the third guide rod are connected with respective reset modules.

[0018] In the present invention, the operating shaft controls the closing and opening of the grounding switch by rotating. As a feasible implementation method, when the operating shaft is rotated clockwise to the position, the grounding switch is in the closed state, and when the operating shaft is rotated counterclockwise to the position, the grounding switch is in the open state. When the rear door is opened, the first guide rod and the second guide rod move left under the action of their reset module, the interlocking pressure block moves left and separates from the moving block, and the third guide rod is not affected by the pressure of the interlocking pressure block, and moves upward under the action of its reset module to make the limit block block the fixed crank arm. At this time, the operating shaft has rotated clockwise to the right, and the grounding switch is closed. After the fixed crank arm is blocked by the limit block, the operating shaft cannot rotate counterclockwise, and the grounding switch cannot be opened; only when the rear door is closed, the rear door pushes the first guide rod and the second guide rod to move right, the interlocking pressure block contacts the moving block, causing the moving block to move down with the third guide rod and the limit block, and the limit block no longer blocks the fixed crank arm. At this time, the operating shaft can rotate counterclockwise to open the grounding switch, and when the operating shaft rotates counterclockwise, the first transmission crank arm also rotates counterclockwise, and then drives the first guide rod to rotate through the connecting rod and the second transmission crank arm, and the first locking block and the second locking block on the first guide rod also rotate together, the first locking block locks the rear door, and the second locking block locks the first guide rod so that it cannot move left and right, and the rear door cannot be opened.

[0019] The interlocking pressure block is a wedge-shaped block with an inclined surface processed on the lower side, and the moving block is a roller, and the rolling shaft of the roller is connected to the lower end of the third guide rod. When the wedge-shaped block moves leftward, the roller is pressed down by the inclined surface, and the roller rotates and moves downward. Because the third guide rod is connected to the roller shaft of the roller, it moves downward together with the roller.

[0020] The first guide rod is mounted on two first support plates fixedly connected to the inside of the switch cabinet, and the first guide rod can move left and right and rotate relative to the first support plate. As a feasible implementation method, a through hole can be opened on the first support plate, and the first guide rod passes through the through hole and cooperates with the through hole gap. One of the first support plates is provided with a clearance notch matching the second locking block. The second locking block rotates with the first guide rod every time. When the second locking block is rotated to a position opposite to the clearance notch, the first guide rod can move left and right by entering the clearance notch of the first support plate. After rotating a certain angle, the second locking block is staggered with the position of the clearance notch, and the left and right movement of the first guide rod is restricted by the first support plate; according to the characteristics of the above structure, the action of the first guide rod locking and unlocking the first guide rod by the first locking block and the second locking block can be synchronized with the action of the operating shaft controlling the closing and opening of the grounding switch.

[0021] Another first support plate is also used to install the first reset module of the first guide rod, the first reset module includes a first reset spring and a first retaining spring fixed on the first guide rod, the first reset spring is sleeved on the first guide rod, and the two ends are respectively connected to the first support plate and the first retaining spring.

[0022] The second guide rod is installed on a second support plate fixedly connected to the inside of the switch cabinet. The second guide rod can move left and right and rotate relative to the second support plate. The second support plate is also used to install a second reset module of the second guide rod. The second reset module includes a second reset spring and a second retaining spring fixed on the second guide rod. The second reset spring is sleeved on the second guide rod, and its two ends are respectively connected to the second support plate and the second retaining spring.

[0023] The third guide rod is installed on a third support plate fixed to the inside of the switch cabinet, and the third guide rod can move up and down relative to the third support plate. The third support plate is also used to install a third reset module of the third guide rod, and the third reset module includes a third reset spring and a third retaining spring fixed to the third guide rod. The third reset spring is sleeved on the third guide rod, and its two ends are respectively connected to the third support plate and the third retaining spring.

[0024] The first guide rod, the second guide rod and the third guide rod in the present invention can all be linear rods, and the first guide rod and the second guide rod are coaxially arranged and perpendicular to the third guide rod.

[0025] The rear door is provided with a lock hole, and the first lock block can be rotated through the lock hole of the rear door by an angle. When the first lock block is rotated so that the first lock block is directly opposite to the lock hole, the rear door can be opened and closed. When the first lock block is rotated by a certain angle so that the position of the first lock block is offset from the lock hole, the rear door cannot be opened after being locked. A shaft sleeve is also fixedly sleeved on the first end of the first guide rod, so that the shaft sleeve is abutted against the inner wall of the rear door and the first lock block is abutted against the outer wall of the rear door to lock the rear door.

[0026] The present invention has the following advantages:

[0027] 1. The present invention is applicable to equipment such as high-voltage armored removable indoor AC metal-enclosed switch cabinets, and realizes interlocking control of the grounding switch and the rear door. In addition, the position selection of the limit device and the linkage device of the present invention is more free, which can perfectly avoid the charged body in the switch cabinet and meet the minimum gap requirements between the charged body, completely avoiding the phenomenon of short circuit of the switch cabinet due to the addition of the interlocking mechanism, and improving safety.

[0028] 2. The limit device and linkage device of the present invention occupy a small space and have a simple structure, which can reduce the material cost and processing cost of the interlocking mechanism. In addition, the various components that make up the interlocking mechanism have a simple structure and are easy to assemble, which can improve the assembly efficiency of the product and reduce the cost of assembly production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0030] Figure 1 It is a schematic diagram of a grounding switch and a rear door interlocking mechanism in the prior art;

[0031] Figure 2 This is a schematic diagram of the interlocking mechanism between the grounding switch and the rear door of the switch cabinet of the present invention, and the rear door is in an open state;

[0032] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0034] Figure 5 for Figure 2 Middle C-C section view;

[0035] Figure 6 for Figure 2 Middle D-D section view;

[0036] Figure 7 for Figure 2 Middle E-E section view;

[0037] Figure 8 for Figure 2 F-F section view;

[0038] Fig. 9 for Figure 2 Partial view at G in the middle;

[0039] Fig.10 for Figure 2 The state diagram of the central interlocking mechanism installed on the switch cabinet;

[0040] Fig.11 for Fig.10 The enlarged view of the H in the middle;

[0041] Fig.12 This is a schematic diagram of the interlocking mechanism between the grounding switch and the rear door of the switch cabinet of the present invention, and the rear door is in a closed state;

[0042] Fig.13 for Fig.12 Middle C-C section view;

[0043] Fig.14 for Fig.12 Middle D-D section view;

[0044] Fig.15 for Fig.12 F-F section view;

[0045] Fig.16 for Fig.12 Partial view at G in the middle;

[0046] Fig.17 for Fig.12 The state diagram of the central interlocking mechanism installed on the switch cabinet;

[0047] Fig.18 for Fig.17 Enlarged view of point I in the middle. DETAILED DESCRIPTION

[0048] like Figures 2 to 18 As shown, an interlocking mechanism between a grounding switch 22 on a switch cabinet 23 and a rear door 20 includes an operating shaft 21 for closing and opening the grounding switch 22, a limit device and a linkage device.

[0049] For ease of description, in this embodiment, the two ends of the first guide rod and the second guide rod are named as the first end and the second end, respectively, and the two ends of the third guide rod are named as the upper end and the lower end, respectively.

[0050] The limiting device comprises:

[0051] The first guide rod 4 can move left and right and rotate, and is connected with a first locking block 1 and a second locking block 19. The first locking block 1 is connected to the first end of the first guide rod 4 and is used to lock the rear door 20 of the switch cabinet. The second locking block 19 is located between the first end and the second end of the first guide rod 4 and is used to lock the first guide rod 4. After the rear door 20 is opened, the second locking block 19 can prevent the first guide rod 4 from moving.

[0052] The second guide rod 9 has a first end rotatably connected to the second end of the first guide rod 4. When the first guide rod 4 moves left and right, the second guide rod 9 can move left and right together with the first guide rod 4. When the first guide rod 4 rotates, the second guide rod 9 will not rotate with the first guide rod 4.

[0053] The interlocking pressure block 10 is connected to the second end of the second guide rod 9 and can move left and right together with the second guide rod 9.

[0054] The third guide rod 13 has a lower end connected to a moving block matched with the interlocking pressure block 10, and the moving block moves up and down with the left and right movement of the interlocking pressure block 10. In this embodiment, when the first guide rod 4 moves to the right, the moving block is pressed down by the interlocking pressure block 10 to move the moving block downward. When the first guide rod 4 moves to the left, the moving block moves upward, so that the third guide rod 13 moves up and down. The upper end of the third guide rod 13 is connected to a limit block 15, and the travel of the limit block 15 moving up and down is divided into an upper section and a lower section;

[0055] The operating shaft 21 is fixedly connected with a fixed crank arm 16 and a first transmission crank arm 17. The fixed crank arm 16 is located at the upper section of the travel of the limit block 15. When the limit block 15 moves up to the upper section, the fixed crank arm 16 and the operating shaft 21 are prevented from rotating. When the limit block 15 moves down to the lower section, the fixed crank arm 16 is no longer blocked by the limit block 15 and can rotate with the operating shaft 21.

[0056] like Figure 1 and Figure 6 As shown, the linkage device comprises:

[0057] The connecting rod 18 is hinged to the first transmission arm 17.

[0058] The second transmission crank arm 7 has one end hinged to the connecting rod 18 and the other end fixedly connected to the first guide rod 4. When the operating shaft 21 rotates, the first transmission crank arm 17, the connecting rod 18 and the second transmission crank arm 7 drive the first guide rod 4 to rotate;

[0059] The first guide rod 4 , the second guide rod 9 and the third guide rod 13 are connected with respective reset modules.

[0060] As a preferred embodiment:

[0061] like Figure 2 and Fig.12 As shown, the interlocking pressure block 10 is a wedge-shaped block with an inclined surface processed on the lower side, and the moving block is a roller 11, and the rolling shaft 12 of the roller 11 is connected to the lower end of the third guide rod 13. The wedge-shaped block moves leftward, pressing the roller 11 downward through the inclined surface, and the roller 11 rotates and moves downward. The third guide rod 13 is connected to the roller shaft 12 of the roller 11 and moves downward together with the roller 11.

[0062] The first guide rod 4 is installed on two first support plates 3 fixedly connected to the inside of the switch cabinet 23. The first guide rod 4 can move left and right and rotate relative to the first support plate 3. A through hole is provided on the first support plate 3. The first guide rod 4 passes through the through hole and matches the clearance of the through hole. One of the first support plates 3 is provided with a clearance notch matching the second locking block 19. The second locking block 19 can unlock or lock the first guide rod every time the first guide rod 4 rotates. When it rotates to the position where the second locking block 19 is opposite to the clearance notch, that is, Figure 8As shown, the second locking block 19 enters the clearance notch of the first support plate 3 to enable the first guide rod 4 to move left and right. At this time, the first guide rod 4 is unlocked and then rotated to a certain angle, and the position of the second locking block 19 is staggered with the clearance notch, that is, Fig.15 As shown in , the right side of the second locking block 19 is blocked by the first support plate 3, and the first support plate 3 limits the left and right movement of the first guide rod 4. At this time, the first guide rod is locked;

[0063] Another first support plate 3 is also used to install the first reset module of the first guide rod 4, such as Figure 4 As shown, the first reset module includes a first reset spring 6 and a first retaining spring 5 fixed on the first guide rod 4. The first reset spring 6 is sleeved on the first guide rod 4, and both ends are respectively connected to the first support plate 3 and the first retaining spring 5. After the rear door 20 is closed, the first guide rod 4 moves to the right, and the first reset spring 6 is compressed to store spring force. After the rear door is opened, the first guide rod 4 moves to the left under the action of the spring force.

[0064] The second guide rod 9 is installed on a second support plate 8 fixedly connected to the inside of the switch cabinet 23. The second guide rod 9 can move left and right and rotate relative to the second support plate 8. The second support plate 8 is also used to install a second reset module of the second guide rod 9. The structure and working principle of the second reset module are similar to those of the first reset module. The second reset module includes a second reset spring and a second retaining spring fixed on the second guide rod. The second reset spring is sleeved on the second guide rod, and the two ends are respectively connected to the second support plate and the second retaining spring.

[0065] The third guide rod 13 is installed on a third support plate 14 fixedly connected to the inside of the switch cabinet 23. The third guide rod 13 can move up and down relative to the third support plate 14. The third support plate 14 is also used to install a third reset module of the third guide rod 13. The structure and working principle of the third reset module are similar to those of the first reset module. The third reset module includes a third reset spring and a third retaining spring fixed on the third guide rod 13. The third reset spring is sleeved on the third guide rod 13, and its two ends are respectively connected to the third support plate and the third retaining spring.

[0066] In this embodiment, the first guide rod 4 , the second guide rod 9 and the third guide rod 13 can all be linear rods. The first guide rod 4 and the second guide rod 9 are coaxially arranged and perpendicular to the third guide rod 13 .

[0067] like Fig. 9 and Fig.16As shown, the rear door 20 is provided with a lock hole. When the first lock block 1 is rotated to a corresponding angle so that it faces the lock hole, it can pass through the lock hole to open and close the rear door. The first lock block 1 is rotated to a certain angle so that it is offset from the lock hole, and the rear door 20 cannot be opened after being locked. A sleeve 2 is also fixedly sleeved on the first end of the first guide rod 4, so that the sleeve 2 is abutted against the inner wall of the rear door 20 and the first lock block 1 is abutted against the outer wall of the rear door 20 to lock the rear door 20.

[0068] The working process of the present invention is as follows:

[0069] In this embodiment, the operating shaft 21 controls the closing and opening of the grounding switch 22 by rotating. Preferably, when the operating shaft 21 rotates clockwise to the desired position, the grounding switch 22 is in the closed state, and when the operating shaft 21 rotates counterclockwise to the desired position, the grounding switch 22 is in the open state. When the rear door 20 is opened, the first guide rod 4 and the second guide rod 9 move to the left under the action of their reset module, and the interlocking pressure block 10 also moves to the left and separates from the moving block. The third guide rod 13 is not affected by the pressure of the interlocking pressure block 10, and moves upward under the action of its reset module so that the limit block 15 blocks the fixed crank arm 16. At this time, the operating shaft 21 has rotated clockwise to the desired position, and the grounding switch 22 is closed. After the fixed crank arm 16 is blocked by the limit block 15, the operating shaft 21 cannot rotate counterclockwise, and the grounding switch 22 cannot be opened. Only when the rear door 20 is closed, the rear door 20 pushes the first guide rod 4 and the second guide rod 9 to move right, and the interlocking pressure block 10 moves upward. The block 10 contacts the moving block, causing the moving block to move downward with the third guide rod 13 and the limit block 15. The limit block 15 no longer blocks the fixed crank arm 16. At this time, the operating shaft 21 can rotate counterclockwise to open the grounding switch 22. When the operating shaft 21 rotates counterclockwise, the first transmission crank arm 17 also rotates counterclockwise, and then drives the first guide rod 4 to rotate through the connecting rod 18 and the second transmission crank arm 7. The first locking block 1 and the second locking block 19 on the first guide rod 4 also rotate together. The first locking block 1 locks the rear door, and the second locking block 19 locks the first guide rod 4 so that it cannot move to the right, and the rear door 20 cannot be opened.

[0070] The above embodiments of the present invention are not intended to limit the protection scope of the present invention, and the implementation modes of the present invention are not limited thereto. All other modifications, replacements or changes made to the above structures of the present invention based on the above contents of the present invention, in accordance with common technical knowledge and customary means in the art, without departing from the above basic technical ideas of the present invention, should fall within the protection scope of the present invention.

Claims

1. An interlocking mechanism between a switch cabinet grounding switch and a rear door, comprising an operating shaft for closing and opening the grounding switch, characterized in that: It also includes a limit device and a linkage device, and the limit device includes: The first guide rod can move left and right and rotate, and is connected with a first locking block and a second locking block, the first locking block is connected to the first end of the first guide rod, the second locking block is located between the first end and the second end of the first guide rod, and the second guide rod has a first end that is rotatably connected to the second end of the first guide rod and can move left and right together with the first guide rod. An interlocking pressure block is connected to the second end of the second guide rod and can move left and right together with the second guide rod. A third guide rod has a lower end connected to a moving block matching the interlocking pressure block. The moving block moves up and down with the left and right movement of the interlocking pressure block, so that the third guide rod moves up and down. A limit block is connected to the upper end of the third guide rod, and the travel of the limit block moving up and down is divided into an upper section and a lower section. The operating shaft is fixedly connected with a fixed crank arm and a first transmission crank arm, and the fixed crank arm is located at the limit block row. The upper part of the process; The linkage device comprises: A connecting rod is hinged to the first transmission crank arm, A second transmission crank arm, one end of which is hinged to the connecting rod and the other end of which is fixedly connected to the first guide rod. When the operating shaft rotates, the first guide rod is driven to rotate through the first transmission crank arm, the connecting rod and the second transmission crank arm; The first guide rod, the second guide rod and the third guide rod are connected with respective reset modules; When the rear door is opened, the first guide rod and the second guide rod move left under the action of their reset module, and the interlocking pressure block also moves left and separates from the moving block. The third guide rod is not affected by the pressure of the interlocking pressure block, and moves upward under the action of its reset module to make the limit block block the fixed crank arm. At this time, the operating shaft has rotated clockwise to the right, and the grounding switch is closed. After the fixed crank arm is blocked by the limit block, the operating shaft cannot rotate counterclockwise, and the grounding switch cannot be opened; only when the rear door is closed, the rear door pushes the first guide rod and the second guide rod to move right, the interlocking pressure block contacts the moving block, causing the moving block to move down with the third guide rod and the limit block, and the limit block no longer blocks the fixed crank arm. At this time, the operating shaft can rotate counterclockwise to open the grounding switch. When the operating shaft rotates counterclockwise, the first transmission crank arm also rotates counterclockwise, and then drives the first guide rod to rotate through the connecting rod and the second transmission crank arm, and the first locking block and the second locking block on the first guide rod also rotate together, the first locking block locks the rear door, and the second locking block locks the first guide rod so that it cannot move to the right, and the rear door cannot be opened.

2. The interlocking mechanism between the switch cabinet grounding switch and the rear door according to claim 1, characterized in that: The interlocking pressure block is a wedge-shaped block with a lower side processed into an inclined surface, and the moving block is a roller, and the rolling shaft of the roller is connected to the lower end of the third guide rod.

3. The interlocking mechanism between the switch cabinet grounding switch and the rear door according to claim 2, characterized in that: The first guide rod is mounted on two first support plates fixedly connected to the inside of the switch cabinet, the first guide rod can move left and right and rotate relative to the first support plates, one of the first support plates is provided with a clearance notch matching the second locking block, and the second locking block can enter the clearance notch of the first support plate every time the first guide rod rotates once, so that the first guide rod can move left and right, or limit the left and right movement of the first guide rod through the first support plate; Another first support plate is also used to install the first reset module of the first guide rod, the first reset module includes a first reset spring and a first retaining spring fixed on the first guide rod, the first reset spring is sleeved on the first guide rod, and the two ends are respectively connected to the first support plate and the first retaining spring.

4. The interlocking mechanism between the switch cabinet grounding switch and the rear door according to claim 3 is characterized in that: The second guide rod is installed on a second support plate fixedly connected to the inside of the switch cabinet. The second guide rod can move left and right and rotate relative to the second support plate. The second support plate is also used to install a second reset module of the second guide rod. The second reset module includes a second reset spring and a second retaining spring fixed on the second guide rod. The second reset spring is sleeved on the second guide rod, and its two ends are respectively connected to the second support plate and the second retaining spring.

5. The interlocking mechanism between the switch cabinet grounding switch and the rear door according to claim 4, characterized in that: The third guide rod is installed on a third support plate fixed to the inside of the switch cabinet, and the third guide rod can move up and down relative to the third support plate. The third support plate is also used to install a third reset module of the third guide rod, and the third reset module includes a third reset spring and a third retaining spring fixed to the third guide rod. The third reset spring is sleeved on the third guide rod, and its two ends are respectively connected to the third support plate and the third retaining spring.

6. The interlocking mechanism between the switch cabinet grounding switch and the rear door according to any one of claims 1 to 5, characterized in that In: the first guide rod, the second guide rod and the third guide rod are all linear rods, the first guide rod and the second guide rod are coaxially arranged and perpendicular to the third guide rod.

7. The interlocking mechanism between the switch cabinet grounding switch and the rear door according to claim 6, characterized in that: The first end of the first guide rod is also fixedly sleeved with a shaft sleeve, the rear door is provided with a lock hole, the shaft sleeve is connected to the inner wall of the rear door, and the first locking block is connected to the outer wall of the rear door for locking the rear door, and the first locking block can be rotated through the lock hole of the rear door at an angle.

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