CN210598512U

CN210598512U - Interlocking mechanism for electrical cabinet

Info

Publication number: CN210598512U
Application number: CN201920394470.9U
Authority: CN
Inventors: 尤祥; 王丽; 张维军
Original assignee: JIANGSU POWERTECH ELECTRICAL EQUIPMENT CO Ltd
Current assignee: JIANGSU POWERTECH ELECTRICAL EQUIPMENT CO Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2020-05-22
Anticipated expiration: 2029-03-26

Abstract

The utility model relates to an interlocking device for regulator cubicle, including ground connection interlocking part, acting as go-between, spool, whole assembly part and lower door interlocking part, lower door interlocking part includes ground connection interlocking plate, ground connection interlocking shaft, ground connection interlocking spring, ground connection interlocking line, ground connection interlocking frame, lower door interlocking plate, lower door interlocking shaft, lower door interlocking spring, lower door interlocking line and interlocking support, this interlocking device for regulator cubicle controls the spring bolt through the electromagnetic lock and removes, the spring bolt drives first spacing support and the second spacing support among the assembly subassembly and removes, and control the movement of acting as go-between through first spacing support, make equipment during the operation, block the lower door through closing the lock, and make the shutting handle unable operation, and when unblanking, through shutting the shutting handle outage, interlocking support moves downwards and breaks away from the lower door, make things convenient for people to open the cabinet door, look over, therefore, the safety and reliability of the interlocking mechanism are enhanced, and the practicability of the equipment is improved.

Description

Interlocking mechanism for electrical cabinet

Technical Field

The utility model relates to an interlocking equipment field, in particular to an interlocking device for regulator cubicle.

Background

The interlocking mechanism of the high-voltage electrical cabinet is an important measure for ensuring the safety of equipment and personnel and preventing misoperation. This is clearly specified in 3-35kV alternating current metal enclosed switchgear (GB3906-91), which national standard describes "interlock" as "metal enclosed switchgear shall have: the isolating switch is prevented from being switched on and off under load; the circuit breaker, the load switch and the contactor are prevented from being switched off and on by mistake; the switch such as a breaker, a load switch and the like is prevented from being closed when the grounding switch is in a closed position; the grounding switch is prevented from being switched on by mistake during the electrification; the five items of contents for preventing electrical misoperation are called 'five prevention' for short.

In order to achieve the purpose of five-prevention, mechanical interlocking is usually utilized to be realized between operation parts of a high-voltage switch cabinet, the locking requirements of successive actions are met by mechanical mechanisms which are restricted and linked with each other, the safety coefficient of the existing mechanical integral assembly part is generally low, the safe operation of equipment cannot be guaranteed, the cabinet door is easily opened by other people to operate the inside of the cabinet in the working state of the electric cabinet, the equipment can also enter the running state due to the misoperation of personnel inside the cabinet body under the power-off condition, harm is brought to the equipment and the personal safety of the personnel around the equipment, and the safety and reliability of the existing electric cabinet interlocking mechanism are greatly reduced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the defects of the prior art, an interlocking mechanism for an electrical cabinet is provided.

The utility model provides a technical scheme that its technical problem adopted is: an interlocking mechanism for an electric cabinet comprises a grounding interlocking part, a pull wire, a wire pipe, an integral assembly part and a lower door interlocking part, wherein the lower door interlocking part is positioned below the grounding interlocking part;

the grounding interlocking part comprises a support plate, an electromagnetic lock, an operating panel and a lock tongue, wherein the support plate is provided with an opening, the periphery of the electromagnetic lock is fixedly connected with the inner wall of the opening, the operating panel is fixed on the electromagnetic lock, the operating panel is provided with a lock hole, an indicator light and a lock key, the lock tongue is fixed on one side of the electromagnetic lock, and the lock tongue is connected with the integral assembly part;

the lower door interlocking part comprises a grounding interlocking plate, a grounding interlocking shaft, a grounding interlocking spring, a grounding interlocking wire, a grounding interlocking frame, a lower door interlocking plate, a lower door interlocking shaft, a lower door interlocking spring, a lower door interlocking wire and an interlocking bracket, wherein the grounding interlocking frame is U-shaped, the bottom of the grounding interlocking frame is fixed above the grounding interlocking plate, jacks are arranged on two sides of the grounding interlocking frame, two ends of the grounding interlocking shaft respectively penetrate through the two openings, the grounding interlocking shaft is sleeved on the grounding interlocking wire, a screw thread matched with the grounding interlocking wire is arranged at the joint of the grounding interlocking shaft and the grounding interlocking wire, a clamping jaw is arranged at one end of the grounding interlocking shaft far away from the grounding interlocking wire, on the lower door interlocking shaft, two ends of the grounding interlocking spring are respectively connected with two ends of the grounding interlocking frame, and the grounding interlocking spring is in a compressed state, the lower door interlocking plate is fixed above the grounding interlocking plate, the interlocking support is located below the grounding interlocking plate, the top end of a lower door interlocking wire is fixedly connected with a pull wire, the bottom end of the lower door interlocking wire is fixedly connected with the top end of a lower door interlocking shaft, the bottom end of the lower door interlocking shaft sequentially penetrates through the lower door interlocking plate and the grounding interlocking plate, a vertical rod and a convex plate are arranged at the bottom end of the lower door interlocking shaft, the convex plate is fixed below the lower door interlocking shaft through the vertical rod, a notch is formed in one end, close to the lower door interlocking shaft, of the interlocking support, and the vertical rod is located on the inner side of the notch;

the assembly part comprises a ground baffle support, a first limiting support, a second limiting support, a ground operation shaft and a locking handle, wherein the first limiting support, the second limiting support and the locking handle are located on one side of the ground baffle support, a hole is formed in the ground baffle support, the ground operation shaft penetrates through the hole and is fixedly connected with the locking handle, the first limiting support and the second limiting support are abutted against the ground baffle support, a spring bolt is fixedly connected with the second limiting support, the first limiting support is fixedly connected with the second limiting support, two clamping blocks are arranged on the first limiting support, one end of the pull wire, away from the lower door locking part, is located between the two clamping blocks, and the clamping blocks are abutted against the pull wire.

As preferred, for further improve equipment's fail safe nature, the whole assembly part still includes operation axis locating part and picture peg, operation axis locating part is located one side of keeping away from first spacing support of ground connection baffle support, the shape of operation axis locating part is the bowl form, operation axis locating part is fixed on the ground connection operation axis, be equipped with the socket on the bowl face of operation axis locating part, be equipped with the bar opening on the ground connection operation board, one side of picture peg is fixed on the spacing support of second, the bar opening is passed to the other end of picture peg.

Preferably, in order to realize stable movement of the first limiting support and the second limiting support, the operating plate is provided with a second limiting retaining ring and two first limiting retaining rings, the first limiting support is provided with two first strip-shaped openings, the second limiting support is provided with a second strip-shaped opening, the first limiting retaining rings correspond to the first strip-shaped openings one by one, the first limiting retaining rings are connected with the first strip-shaped openings in a sliding manner, and the second limiting retaining rings are connected with the second strip-shaped openings in a sliding manner.

Preferably, in order to realize stable movement of the lower door interlocking shaft, a door fixing member is arranged below the interlocking bracket, the vertical section of the door fixing member is in a U shape, and the interlocking bracket abuts against the upper side of the door fixing member.

Preferably, in order to assist the grounding interlocking wire to stably rotate, a support plate is arranged above one end of the grounding interlocking plate, which is far away from the lower door interlocking shaft, and the support plate is sleeved on the grounding interlocking wire.

The beneficial effects of the utility model are that, this an interlocking device for regulator cubicle passes through electromagnetic lock control spring bolt and removes, the spring bolt drives the first spacing support and the spacing support of second in the assembly subassembly and removes, and through the removal of first spacing support control acting as go-between, make equipment during the operation, block the lower door through closing the lock, and make the shutting handle unable operation, and when unblanking, through shutting the handle outage, interlocking support downstream breaks away from the lower door, make things convenient for people to open the cabinet door, look over the regulator cubicle, and thus, this interlocking device's fail safe nature has been strengthened, the practicality of this equipment has been improved.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of an interlocking mechanism for an electrical cabinet according to the present invention;

fig. 2 is a rear view of the interlocking mechanism for the electrical cabinet of the present invention;

fig. 3 is a schematic structural view of a grounding interlocking part of the interlocking mechanism for the electrical cabinet according to the present invention;

fig. 4 is a schematic structural view of a lower door interlocking part of an interlocking mechanism for an electrical cabinet according to the present invention;

fig. 5 is a schematic structural view of an integral assembly part of the interlocking mechanism for the electrical cabinet of the present invention;

fig. 6 is a schematic structural view of an integral assembly part of the interlocking mechanism for the electrical cabinet of the present invention;

in the figure: 1. the safety door comprises a stay wire, 2. a spool, 3. a support plate, 4. an electromagnetic lock, 5. an operation panel, 6. a bolt, 7. a lock hole, 8. an indicator light, 9. a lock key, 10. a grounding interlocking plate, 11. a grounding interlocking shaft, 12. a grounding interlocking spring, 13. a grounding interlocking wire, 14. a grounding interlocking frame, 15. a lower door interlocking plate, 16. a lower door interlocking shaft, 17. a lower door interlocking spring, 18. a lower door interlocking wire, 19. an interlocking bracket, 20. a grounding baffle bracket, 21. a first limiting bracket, 22. a second limiting bracket, 23. a grounding operation shaft, 24. a locking handle, 25. an operation shaft limiting part, 26. an inserting plate, 27. a second limiting retainer ring, 28. a first limiting retainer ring, 29. a door fixing part, 30. a support plate, 31. a vertical rod, 32. a convex plate and 33. a clamping block.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1-2, an interlocking mechanism for an electrical cabinet comprises a grounding interlocking part, a pull wire 1, a wire tube 2, an integral assembly part and a lower door interlocking part, wherein the lower door interlocking part is positioned below the grounding interlocking part, one end of the pull wire 1 is connected with the lower door interlocking part, the other end of the pull wire 1 penetrates through the wire tube 2 to be connected with the integral assembly part, and the grounding interlocking part is in transmission connection with the pull wire 1;

when the interlocking mechanism for the electrical cabinet is used, the pull wire 1 can be driven to move in the wire pipe 2 by operating the grounding interlocking part and simultaneously act on the arranging and assembling part, and the pull wire 1 is connected with the lower door interlocking part to control the opening or closing of the lower door.

As shown in fig. 3, the grounding interlocking component comprises a support plate 3, an electromagnetic lock 4, an operation panel 5 and a bolt 6, wherein an opening is formed in the support plate 3, the periphery of the electromagnetic lock 4 is fixedly connected with the inner wall of the opening, the operation panel 5 is fixed on the electromagnetic lock 4, a lock hole 7, an indicator light 8 and a lock key 9 are formed in the operation panel 5, the bolt 6 is fixed on one side of the electromagnetic lock 4, and the bolt 6 is connected with the integral assembly component;

in the ground connection interlocking part, the position of extension board 3 is fixed, at the inside fixed mounting electromagnetic lock 4 of opening of extension board 3, the user is when using this ground connection interlocking part, inserts the key in lockhole 7, presses lock key 9, can unblank or close the lock action for the spring bolt 6 takes place to remove, and then triggers whole assembly part function, and pilot lamp 8 on the operating panel 5 for instruct the running state of electromagnetic lock 4.

As shown in fig. 4, the lower door interlocking part includes a grounding interlocking plate 10, a grounding interlocking shaft 11, a grounding interlocking spring 12, a grounding interlocking wire 13, a grounding interlocking frame 14, a lower door interlocking plate 15, a lower door interlocking shaft 16, a lower door interlocking spring 17, a lower door interlocking wire 18 and an interlocking bracket 19, the grounding interlocking frame 14 is U-shaped, the bottom of the grounding interlocking frame 14 is fixed above the grounding interlocking plate 10, both sides of the grounding interlocking frame 14 are provided with jacks, both ends of the grounding interlocking shaft 11 respectively pass through two openings, the grounding interlocking shaft 11 is sleeved on the grounding interlocking wire 13, a connection part of the grounding interlocking shaft 11 and the grounding interlocking wire 13 is provided with a thread matching with the grounding interlocking wire 13, one end of the grounding interlocking shaft 11 far away from the grounding interlocking wire 13 is provided with a claw to clamp the lower door shaft 16, the two ends of the grounding interlocking spring 12 are respectively connected with the two ends of the grounding interlocking frame 14, the grounding interlocking spring 12 is in a compressed state, the lower door interlocking plate 15 is fixed above the grounding interlocking plate 10, the interlocking support 19 is located below the grounding interlocking plate 10, the top end of the lower door interlocking wire 18 is fixedly connected with the pull wire 1, the bottom end of the lower door interlocking wire 18 is fixedly connected with the top end of the lower door interlocking shaft 16, the bottom end of the lower door interlocking shaft 16 sequentially penetrates through the lower door interlocking plate 15 and the grounding interlocking plate 10, the bottom end of the lower door interlocking shaft 16 is provided with a vertical rod 31 and a convex plate 32, the convex plate 32 is fixed below the lower door interlocking shaft 16 through the vertical rod 31, one end of the interlocking support 19, which is close to the lower door interlocking shaft 16, is provided with a notch, and the vertical rod 31 is located inside the notch;

in the lower door interlocking part, a lower door interlocking wire 18 is fixedly connected with a pull wire 1, so that when the pull wire 1 moves, the lower door interlocking wire 18 and a lower door interlocking shaft 16 are driven to move synchronously, in order to ensure the safety and reliability of the lower door interlocking mechanism, a lower door interlocking spring 17 in a compressed state in a grounding interlocking frame 14 pushes a grounding interlocking shaft 11, so that a jaw on the grounding interlocking shaft 11 clamps the lower door interlocking shaft 16 to prevent the lower door interlocking shaft 16 and the lower door interlocking wire 18 from moving, when a cabinet door needs to be opened or closed, the lower door interlocking shaft 16 and the lower door interlocking wire 18 need to be controlled to move, at the moment, the grounding interlocking wire 13 is rotated, so that a thread on the grounding interlocking wire 13 acts on the grounding interlocking shaft 11, the grounding interlocking shaft 11 is far away from the lower door interlocking shaft 16 along the axis of the grounding interlocking wire 13, so that the jaw on the grounding interlocking shaft 11 is separated from the lower door interlocking wire 18, can conveniently descend door interlocking axle 16 to reciprocate this moment, when lower door interlocking axle 16 drives interlocking support 19 downstream through montant 31 and flange 32, interlocking support 19 breaks away from lower door cabinet door, thereby make things convenient for lower door cabinet door downstream, when interlocking support 19 along with lower door interlocking axle 16 and lower door interlocking line 18 upward movement, interlocking support 19 keeps away from the top card of lower door interlocking axle 16's one end at the top of lower door cabinet door, thereby the position of fixed cabinet door, avoid the cabinet door outwards to open, under this kind of condition, can guarantee the operation of high-voltage electrical cabinet safe and reliable.

As shown in fig. 5, the integral assembling member includes a ground shield bracket 20, a first limit bracket 21, a second limit bracket 22, a ground operating shaft 23 and a locking handle 24, the first limit bracket 21, the second limit bracket 22 and the locking handle 24 are all positioned at one side of the ground baffle bracket 20, the grounding baffle bracket 20 is provided with an opening, the grounding operating shaft 23 passes through the opening and is fixedly connected with a locking handle 24, the first limiting bracket 21 and the second limiting bracket 22 are both abutted against the grounding baffle bracket 20, the lock tongue 6 is fixedly connected with a second limit bracket 22, the first limit bracket 21 is fixedly connected with the second limit bracket 22, two clamping blocks 33 are arranged on the first limiting support 21, one end, far away from the lower door interlocking part, of the stay wire 1 is located between the two clamping blocks 33, and the clamping blocks 33 abut against the stay wire 1.

In the integral assembly component, the second limit bracket 22 is fixedly connected with the bolt 6 of the electromagnetic lock 4, and the second limit bracket 22 is fixedly connected with the first limit bracket 21, so that the first limit bracket 21 and the second limit bracket 22 can move along with the movement of the bolt 6, the position of the grounding baffle plate bracket 20 is fixed, after the electromagnetic lock 4 is locked, the first limit bracket 21 and the second limit bracket 22 move along with the bolt 6 close to the grounding operating shaft 23, finally, the first limit bracket 21 and the second limit bracket 22 are clamped on the grounding operating shaft 23, at the moment, a user can be prevented from operating the locking handle 24, so that the function of avoiding interlocking misoperation is realized, simultaneously, along with the movement of the first limit bracket 21, the two clamping blocks 33 on the first limit bracket 21 clamp the stay wire 1, the stay wire 1 is pulled upwards, so that the lower door interlocking wire 18 and the shaft are pulled upwards firstly, the interlocking bracket 19 is blocked on the lower door to prevent the lower door from being opened, so that when the lower door is unlocked, a user can be prevented from opening the cabinet door, the safe operation of the electric cabinet is ensured, when the electromagnetic lock 4 is unlocked, the first limit bracket 21 and the second limit bracket 22 are far away from the grounding operation shaft 23 along with the movement of the bolt 6, at this time, the locking handle 24 can be operated, meanwhile, the two clamping blocks 33 on the first limiting bracket 21 push the pull wire 1 to move, so that the pull wire 1 drives the lower door interlocking shaft 16 to move downwards through the lower door interlocking wire 18, at the moment, the interlocking bracket 19 is separated from the lower door, a user can open the cabinet door, the electrical cabinet is subjected to maintenance work, since before that, the circuit breaker of the electrical cabinet is controlled to close through the operable latching handle 24, so that the equipment is powered off, and further, the safety operation of a user can be facilitated, so that the safety reliability of the electric cabinet interlocking mechanism is improved.

As shown in fig. 6, the integral assembly component further includes an operating shaft limiting part 25 and an insert plate 26, the operating shaft limiting part 25 is located on one side of the grounding baffle plate support 20 far away from the first limiting support 21, the operating shaft limiting part 25 is in a bowl shape, the operating shaft limiting part 25 is fixed on the grounding operating shaft 23, a socket is arranged on the bowl surface of the operating shaft limiting part 25, a bar-shaped opening is arranged on the grounding operating plate, one side of the insert plate 26 is fixed on the second limiting support 22, and the other end of the insert plate 26 passes through the bar-shaped opening.

When the unlocking operation is performed, the inserting plate 26 on the second limiting support 22 moves towards the operating shaft limiting part 25 in the strip-shaped opening on the grounding baffle support 20, so that the inserting plate 26 is inserted into the socket on the bowl surface of the operating shaft limiting part 25, the operation of the operating shaft limiting part 25 is avoided, the locking handle 24 cannot be operated after the unlocking operation is further ensured, and the safety performance of the interlocking mechanism is improved.

Preferably, in order to realize stable movement of the first limiting support 21 and the second limiting support 22, a second limiting retainer ring 27 and two first limiting retainer rings 28 are arranged on the operating plate, two first strip-shaped openings are arranged on the first limiting support 21, a second strip-shaped opening is arranged on the second limiting support 22, the first limiting retainer rings 28 correspond to the first strip-shaped openings one by one, the first limiting retainer rings 28 are slidably connected with the first strip-shaped openings, and the second limiting retainer rings 27 are slidably connected with the second strip-shaped openings. The first limiting retainer ring 28 can slide relatively stably with the first strip-shaped opening, so that the first limiting support 21 can move stably on the grounding baffle support 20, and similarly, the stable movement of the second limiting support 22 is realized.

Preferably, in order to realize the stable movement of the lower door interlocking shaft 16, a door fixing member 29 is provided below the interlocking bracket 19, the vertical section of the door fixing member 29 is U-shaped, and the interlocking bracket 19 abuts on the upper side of the door fixing member 29. The door fixing member 29 is fixedly installed on the back surface of the lower door to support the interlocking bracket 19 in an auxiliary manner, so that the stable movement of the interlocking bracket 19 and the lower door interlocking shaft 16 can be realized.

Preferably, in order to assist the ground interlock wire 13 to stably rotate, a support plate 30 is disposed above one end of the ground interlock plate 10 away from the lower door interlock shaft 16, and the support plate 30 is fitted over the ground interlock wire 13. The grounding interlock wire 13 is supported by the support plate 30, so that the position of the rotation central axis of the grounding interlock wire 13 is fixed, and the stable rotation of the grounding interlock wire 13 is facilitated.

When the electric cabinet interlocking mechanism is used, if a user needs to unlock, the grounding interlocking wire 13 is rotated to enable the grounding interlocking shaft 11 to be far away from the lower door interlocking shaft 16, so that the interlocking bracket 19 can move conveniently, then the bolt 6 is driven to move through the electromagnetic lock 4, the first limiting bracket 21 and the second limiting bracket 22 are close to the electromagnetic lock 4, the locking handle 24 is pressed to stop the power of equipment, meanwhile, the two clamping blocks 33 on the first limiting bracket 21 drive the pull wire 1 to move downwards, the interlocking bracket 19 is driven to move downwards through the lower door interlocking wire 18 and the lower door interlocking shaft 16 to be separated from the lower door, so that the user can open the lower door conveniently, if the user needs to close the lock, the first limiting bracket 21 and the second limiting bracket 22 are driven to be clamped on the locking handle 24 through the electromagnetic lock 4, so that the pull wire 1 is pulled by the clamping blocks 33 on the first limiting bracket 21, and the interlocking bracket 19 is lifted upwards through the lower door interlocking wire 18 and the lower door interlocking shaft 16, the lower door is clamped, the cabinet door is prevented from being opened by someone during the operation of the equipment, and the safe operation of the high-voltage electric cabinet is further ensured, so that the safety performance of the interlocking mechanism is enhanced.

Compared with the prior art, this an interlocking device for regulator cubicle passes through 4 control spring bolts 6 removals of electromagnetic lock, spring bolt 6 drives the first spacing support 21 and the second spacing support 22 removal in the assembly, and pull string 1 removal through first spacing support 21 control, make equipment during the operation, block the lower door through closing the lock, and make shutting handle 24 inoperable, and when unblanking, cut off the power supply through shutting handle 24, interlocking support 19 moves down and breaks away from the lower door, make things convenient for people to open the cabinet door, look over the regulator cubicle, thus, this interlocking device's fail safe nature has been strengthened, the practicality of this equipment has been improved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The interlocking mechanism for the electric cabinet is characterized by comprising a grounding interlocking part, a pull wire (1), a wire pipe (2), an integral assembly part and a lower door interlocking part, wherein the lower door interlocking part is positioned below the grounding interlocking part, one end of the pull wire (1) is connected with the lower door interlocking part, the other end of the pull wire (1) penetrates through the wire pipe (2) to be connected with the integral assembly part, and the grounding interlocking part is in transmission connection with the pull wire (1);

the grounding interlocking component comprises a support plate (3), an electromagnetic lock (4), an operation panel (5) and a lock tongue (6), wherein an opening is formed in the support plate (3), the periphery of the electromagnetic lock (4) is fixedly connected with the inner wall of the opening, the operation panel (5) is fixed on the electromagnetic lock (4), a lock hole (7), an indicator light (8) and a lock key (9) are formed in the operation panel (5), the lock tongue (6) is fixed on one side of the electromagnetic lock (4), and the lock tongue (6) is connected with the integral assembly component;

the lower door interlocking part comprises an earthing interlocking plate (10), an earthing interlocking shaft (11), an earthing interlocking spring (12), an earthing interlocking line (13), an earthing interlocking frame (14), a lower door interlocking plate (15), a lower door interlocking shaft (16), a lower door interlocking spring (17), a lower door interlocking line (18) and an interlocking support (19), wherein the earthing interlocking frame (14) is U-shaped, the bottom of the earthing interlocking frame (14) is fixed above the earthing interlocking plate (10), jacks are arranged on two sides of the earthing interlocking frame (14), two ends of the earthing interlocking shaft (11) respectively penetrate through the two holes, the earthing interlocking shaft (11) is sleeved on the earthing interlocking line (13), a thread matched with the earthing interlocking line (13) is arranged at the connecting part of the earthing interlocking shaft (11) and the earthing interlocking line (13), and a clamping jaw is arranged at one end, far away from the earthing interlocking line (13), of the earthing interlocking shaft (11), the clamping jaws clamp the lower door interlocking shaft (16), the two ends of the grounding interlocking spring (12) are respectively connected with the two ends of the grounding interlocking frame (14), the grounding interlocking spring (12) is in a compression state, the lower door interlocking plate (15) is fixed above the grounding interlocking plate (10), the interlocking support (19) is located below the grounding interlocking plate (10), the top end of the lower door interlocking wire (18) is fixedly connected with the pull wire (1), the bottom end of the lower door interlocking wire (18) is fixedly connected with the top end of the lower door interlocking shaft (16), the bottom end of the lower door interlocking shaft (16) sequentially penetrates through the lower door interlocking plate (15) and the grounding interlocking plate (10), the bottom end of the lower door interlocking shaft (16) is provided with a vertical rod (31) and a convex plate (32), and the convex plate (32) is fixed below the lower door interlocking shaft (16) through the vertical rod (31), one end of the interlocking support (19) close to the lower door interlocking shaft (16) is provided with a notch, and the vertical rod (31) is positioned on the inner side of the notch;

the integral assembly part comprises a grounding baffle support (20), a first limiting support (21), a second limiting support (22), a grounding operation shaft (23) and a locking handle (24), wherein the first limiting support (21), the second limiting support (22) and the locking handle (24) are all located on one side of the grounding baffle support (20), an opening is formed in the grounding baffle support (20), the grounding operation shaft (23) penetrates through the opening to be fixedly connected with the locking handle (24), the first limiting support (21) and the second limiting support (22) are abutted against the grounding baffle support (20), a lock tongue (6) is fixedly connected with the second limiting support (22), the first limiting support (21) is fixedly connected with the second limiting support (22), two clamping blocks (33) are arranged on the first limiting support (21), one end, far away from the lower door locking part, of the pull wire (1) is located between the two clamping blocks (33), the clamping block (33) is abutted against the stay wire (1).

2. The interlocking mechanism for an electrical cabinet according to claim 1, wherein the integral assembly component further comprises an operating shaft limiting member (25) and an insert plate (26), the operating shaft limiting member (25) is located on one side of the ground baffle bracket (20) away from the first limiting bracket (21), the operating shaft limiting member (25) is shaped like a bowl, the operating shaft limiting member (25) is fixed on the ground operating shaft (23), a socket is arranged on a bowl surface of the operating shaft limiting member (25), a bar-shaped opening is arranged on the ground operating plate, one side of the insert plate (26) is fixed on the second limiting bracket (22), and the other end of the insert plate (26) passes through the bar-shaped opening.

3. The interlocking mechanism for the electrical cabinet according to claim 1, wherein the operating plate is provided with a second limit stop ring (27) and two first limit stop rings (28), the first limit bracket (21) is provided with two first bar-shaped openings, the second limit bracket (22) is provided with a second bar-shaped opening, the first limit stop rings (28) correspond to the first bar-shaped openings one by one, the first limit stop rings (28) are slidably connected with the first bar-shaped openings, and the second limit stop rings (27) are slidably connected with the second bar-shaped openings.

4. The interlocking mechanism for an electrical cabinet according to claim 1, wherein a door fixing member (29) is provided below the interlocking bracket (19), the vertical cross section of the door fixing member (29) has a U-shape, and the interlocking bracket (19) abuts on the upper side of the door fixing member (29).

5. The interlocking mechanism for the electrical cabinet as claimed in claim 1, wherein a support plate (30) is arranged above one end of the grounding interlocking plate (10) far away from the lower door interlocking shaft (16), and the support plate (30) is sleeved on the grounding interlocking wire (13).