Multi-point linkage for complete equipment and method

Abstract

The invention relates to a multi-point interlock for complete equipment, which comprises a cabinet top interlock plate, an electromagnetic lock, a normally closed contact, a push rod, a guide plate, an interlock mechanism, a first connecting rod, a second connecting rod, a door lock, a far-point interlock mechanism, a fastening screw, a cabinet door and a cabinet body, the cabinet door is installed on the outer wall of one side of the cabinet body, and the cabinet top interlock plate is installed on the inner wall of one side of the cabinet body. The cabinet top interlocking plate is sleeved with a fastening screw, one end of the fastening screw is in threaded connection with the inner wall of the cabinet body, an electromagnetic lock is installed at the bottom end of the cabinet top interlocking plate, a normally-closed contact is installed on one side of the electromagnetic lock, and an ejector rod is installed on the outer wall of the bottom end of the normally-closed contact; a plurality of locking points can be arranged on complete equipment, it is ensured that the cabinet door can be locked, the short-circuit fault resisting capacity of the equipment is improved, the locking internal stress is shared through the multiple locking points, deformation of the locking shaft is avoided, and great potential safety hazards are avoided during long-term operation.

Description

Technical Field

[0001] This invention relates to the field of complete sets of equipment technology, and more particularly to a multi-point interlocking system for complete sets of equipment. Background Technology

[0002] As a key piece of equipment in the power system, complete sets of equipment undertake important functions of switching on and off, controlling and protecting circuits. The interlocking to prevent accidental entry into live compartments is a key component of the electrical "five-prevention interlocking". The interlocking of equipment doors and cabinets has become an important part of the safety protection system of complete sets of equipment. It aims to standardize and constrain the operation process of complete sets of equipment through mechanical, electrical or electromechanical combination means, and prevent dangerous situations such as misoperation and live work.

[0003] The existing complete sets of equipment mainly use rotary door locks to achieve three-point interlocking in the middle and at the top and bottom. Since the height of the complete sets of equipment reaches 2.2 meters or more, there is only one locking point in the middle of the cabinet door, which will cause the cabinet door to not close tightly and has extremely poor resistance to short circuit faults. For the sake of lightness, the upper and lower locking points of the equipment are usually progressive, with large gaps and easy deformation of the locking shaft. This leaves a great safety hazard during long-term operation. Summary of the Invention

[0004] The problem solved by this invention is to provide a multi-point interlocking system for complete sets of equipment, which can set multiple locking points to ensure that the cabinet door can be locked, ensure the equipment's ability to resist short-circuit faults, and distribute the internal stress of locking by multiple locking points to avoid deformation of the locking shaft, thus avoiding significant safety hazards during long-term operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-point interlocking system for a complete set of equipment, comprising a cabinet top interlocking plate, an electromagnetic lock, normally closed contacts, a top rod, a guide plate, an interlocking mechanism, a first connecting rod, a second connecting rod, a door lock, a remote interlocking mechanism, fastening screws, a cabinet door, and a cabinet body. A cabinet door is installed on one outer wall of the cabinet body, and a cabinet top interlocking plate is installed on one inner wall of the cabinet body. Fastening screws are fitted onto the cabinet top interlocking plate, with one end of the fastening screws threaded to the inner wall of the cabinet body. An electromagnetic lock is installed at the bottom end of the cabinet top interlocking plate. The electromagnetic lock has a normally closed contact on one side. When the interlock is broken, the top of the button contacts the top rod, the normally closed contact is electrically disconnected, and the electromagnetic lock is unlocked. A guide plate is sleeved on the outside of the top rod, and one side of the guide plate is fixed to the outer wall of the cabinet door. A first connecting rod is installed at the bottom of the top rod, and a second connecting rod is rotatably installed at the other end of the first connecting rod. An interlocking mechanism is installed on the second connecting rod and the first connecting rod. A door lock is installed in the middle of the cabinet door, and a remote interlocking mechanism is installed on the outer wall of the cabinet door located at the bottom end of the first connecting rod.

[0006] Preferably, the electromagnetic lock includes a locking rod, a first welding bolt, and a first fastening nut. The locking rod is installed on the electromagnetic lock, and one end of the locking rod is fixed to the outer wall of the cabinet top interlocking plate. The electromagnetic lock is fitted with the first welding bolt, and the outer side of the first welding bolt is threaded with the first fastening nut.

[0007] Preferably, the normally closed contact includes a contact fastening bolt, a second welding stud, a second fastening nut, a contact mounting bracket, and a button. A contact mounting bracket is fixed to one outer wall of the normally closed contact. A contact fastening bolt is sleeved on one side of the contact mounting bracket, and one end of the contact fastening bolt is threaded to the inner wall of the normally closed contact. The second welding stud is symmetrically installed on one side of the cabinet door, and one side of the second welding stud penetrates the inner wall of the contact mounting bracket. A second fastening nut is threaded onto the second welding stud.

[0008] Preferably, the interlocking mechanism includes an adjusting interlocking plate, a second interlocking shaft, an interlocking mechanism support, a third welded stud, a third fastening nut, a clamping bolt, a guide shaft, a fulcrum shaft, a limiting pressure plate, and a fourth fastening nut. An adjusting interlocking plate is installed between the first connecting rod and the second connecting rod. A limiting pressure plate is fixed to the outer wall of the top of the adjusting interlocking plate, and the limiting pressure plate only acts on the adjusting interlocking plate. A second interlocking shaft is sleeved on the adjusting interlocking plate and the top rod. A clamping bolt is threadedly connected to the outer wall of the second interlocking shaft located on one side of the adjusting interlocking plate. An interlocking mechanism support is installed on one side of the cabinet door. A third welded stud is sleeved on one side of the cabinet door, and the outer side of the third welded stud is connected to the inner wall of the interlocking mechanism support. A third fastening nut is threadedly connected to the outer side of the interlocking mechanism support.

[0009] Preferably, the adjusting interlocking plate includes a limiting hole, a fulcrum hole, and a clearance hole. The adjusting interlocking plate has a limiting hole, and the outer side of the guide shaft is sleeved on the inner wall of the limiting hole. The adjusting interlocking plate has a fulcrum hole, and the outer side of the fulcrum shaft is sleeved on the inner wall of the fulcrum hole. The adjusting interlocking plate has a clearance hole, and one side of the clearance hole is fitted to the outer wall of the first connecting rod. The first connecting rod and the clearance hole are fitted with a first interlocking shaft.

[0010] Preferably, the door lock includes a gear shaft, a latch, a rack, a rack threaded hole, a latch clamping screw, a fourth connecting bolt, a clamping nut, and a rack connecting rod support. A gear shaft is installed on one side of the door lock. A rack is symmetrically meshed on the outer side of the gear shaft. A rack threaded hole is symmetrically opened on one side of the rack. A rack connecting rod support is fitted to one side of the rack threaded hole. A fourth connecting bolt is threaded into the rack threaded hole and the rack connecting rod support. One side of the rack connecting rod support is fitted to the outer wall of a second connecting rod. A third interlocking shaft is installed between the second connecting rod and the rack connecting rod support. A clamping nut is threaded into one side of the third interlocking shaft. A latch is installed on one side of the gear shaft, and one side of the latch is inserted into the inner wall of the cabinet. A latch clamping screw is installed inside the latch and the gear shaft.

[0011] Preferably, the remote interlocking mechanism includes a first interlocking shaft, a fourth welding stud, and a fifth fastening nut. The first interlocking shaft is installed on the interlocking mechanism support and the adjusting interlocking plate. The outer side of the first interlocking shaft is threaded with a fifth fastening bolt. The interlocking mechanism support and the limiting pressure plate are equipped with a guide shaft. The interlocking mechanism support and the limiting pressure plate are equipped with a fulcrum shaft on one side of the guide shaft. The fourth welding stud is symmetrically welded on one side of the cabinet door, and one side of the fourth welding stud is connected through to the inner wall of the interlocking mechanism support. The fourth welding stud is threaded with a fifth fastening nut on one side of the interlocking mechanism support.

[0012] The beneficial effects of this invention are: multiple locking points can be set for the complete set of equipment to ensure that the cabinet door can be locked, improve the equipment's ability to resist short circuit faults, and the internal stress of locking is shared by multiple locking points to avoid deformation of the locking shaft, thus avoiding significant safety hazards during long-term operation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 For the present invention Figure 1 AA cross-sectional structure diagram;

[0015] Figure 3 This is a schematic diagram of the interlocking and closing structure of the present invention;

[0016] Figure 4 For the present invention Figure 3 BB cross-sectional structure diagram;

[0017] Figure 5 For the present invention Figure 3 CC cross-section diagram in the image;

[0018] Figure 6 This is a schematic diagram of the interlocking opening structure of the present invention;

[0019] Figure 7 This is a schematic diagram illustrating the operating principle of the gear and rack lock of the present invention;

[0020] Figure 8 This is a schematic diagram of the rack and pinion connecting support and connecting rod structure of the present invention;

[0021] Figure 9 This is a schematic diagram of the electric interlocking structure of the present invention.

[0022] Legend:

[0023] 1. Cabinet top interlock plate; 2. Electromagnetic lock; 3. Normally closed contact; 4. Top rod; 5. Guide plate; 6. Interlocking mechanism; 7. First connecting rod; 8. Second connecting rod; 9. Door lock; 10. Remote interlocking mechanism; 11. Fastening screw; 12. First interlocking shaft; 13. Cabinet door; 14. Cabinet body; 21. Locking rod; 22. First welding bolt; 23. First fastening nut; 31. Contact fastening bolt; 32. Second welding stud; 33. Second fastening nut; 34. Contact mounting bracket; 35. Button; 61. Adjusting interlock plate; 62. Second interlocking shaft; 63. Interlocking mechanism bracket 64. Third welded stud; 65. Third fastening nut; 66. Clamping bolt; 67. Third interlocking shaft; 68. Guide shaft; 69. Pivot shaft; 610. Limiting pressure plate; 611. Fourth fastening nut; 91. Gear shaft; 92. Locking tongue; 93. Rack; 94. Rack threaded hole; 95. Locking tongue clamping screw; 96. Connecting bolt; 97. Clamping nut; 98. Rack connecting rod support; 101. Fourth welded stud; 102. Fifth fastening nut; 121. Fifth fastening bolt; 61-1. Limiting hole; 61-2. Pivot hole; 61-3. Clearance hole. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] See Figures 1-3A complete set of equipment using multi-point interlocking includes a cabinet top interlocking plate 1, an electromagnetic lock 2, a normally closed contact 3, a top rod 4, a guide plate 5, an interlocking mechanism 6, a first connecting rod 7, a second connecting rod 8, a door lock 9, a remote interlocking mechanism 10, fastening screws 11, a cabinet door 13, and a cabinet body 14. A cabinet door 13 is installed on one outer wall of the cabinet body 14, and a cabinet top interlocking plate 1 is installed on one inner wall of the cabinet body 14. Fastening screws 11 are fitted onto the cabinet top interlocking plate 1, with one end of the fastening screws 11 threaded to the inner wall of the cabinet body 14. An electromagnetic lock 2 is installed at the bottom of the cabinet top interlocking plate 1, and a [missing information - likely a device or mechanism] is installed on one side of the electromagnetic lock 2. Normally closed contact 3, when the interlock is broken, the top of button 35 contacts the top rod 4, the normally closed contact 3 is electrically disconnected, and the electromagnetic lock is unlocked; a guide plate 5 is sleeved on the outside of the top rod 4, and one side of the guide plate 5 is fixed to the outer wall of the cabinet door 13. A first connecting rod 7 is installed at the bottom end of the top rod 4, and a second connecting rod 8 is rotatably installed at the other end of the first connecting rod 7. An interlocking mechanism 6 is installed on the second connecting rod 8 and the first connecting rod 7. A door lock 9 is installed in the middle of the cabinet door 13, and a remote interlocking mechanism 10 is installed on the outer wall of the cabinet door 13 at the bottom end of the first connecting rod 7; the electromagnetic lock 2 includes a locking rod 21 and a first welded screw. The electromagnetic lock 2 has a bolt 22 and a first fastening nut 23. A locking rod 21 is mounted on the electromagnetic lock 2, with one end of the locking rod 21 fixed to the outer wall of the cabinet top interlocking plate 1. First welding bolts 22 are distributed and fitted onto the electromagnetic lock 2. The outer threads of the first welding bolts 22 are connected to the first fastening nut 23. The electromagnetic lock 2 is fixed in position by the first welding bolts 22 and the first fastening nut 23, and then the locking rod 21 is moved by the electromagnetic lock 2. The normally closed contact 3 includes a contact fastening bolt 31, a second welding stud 32, a second fastening nut 33, a contact mounting bracket 34, and a button 35. One side of the normally closed contact 3... A contact mounting bracket 34 is fixedly connected to the outer wall. A contact fastening bolt 31 is sleeved on one side of the contact mounting bracket 34, and one end of the contact fastening bolt 31 is threaded to the inner wall of the normally closed contact 3. A second welding stud 32 is symmetrically installed on one side of the cabinet door 13, and one side of the second welding stud 32 penetrates the inner wall of the contact mounting bracket 34. A second fastening nut 33 is threaded onto the second welding stud 32. The normally closed contact 3 is fixed in position by the second welding stud 32 and the second fastening nut 33, and then the contact mounting bracket 34 is fixed in position by the contact fastening bolt 31.

[0027] Working principle: The top interlock plate 1 is installed on the column of the cabinet 14 by fastening screws 11, while the first welding bolt 22 is welded to the inside of the cabinet door 13. The electromagnetic lock 2 is fastened to the cabinet door 13 by nuts. When the push rod 4 pushes against the normally closed contact 3, the electromagnetic lock 2 is activated, the locking rod 21 is disengaged from the top interlock plate 1, and the interlock is opened. When the cabinet door 13 is closed, the interlock is closed, the push rod 4 is retracted, the normally closed contact 3 is closed, the electromagnetic lock 2 is activated, and the locking rod 21 is inserted into the top interlock plate 1, completing the top interlock closure. Multiple locking points can be set for the complete set of equipment to ensure that the cabinet door 13 can be locked, ensuring the equipment's ability to resist short circuit faults. Moreover, by distributing the internal stress of locking through multiple locking points, deformation of the locking shaft is avoided, thus preventing significant safety hazards during long-term operation.

[0028] Example 2

[0029] See Figures 4-7The interlocking mechanism 6 includes an adjusting interlocking plate 61, a second interlocking shaft 62, an interlocking mechanism support 63, a third welding stud 64, a third fastening nut 65, a clamping bolt 66, a guide shaft 68, a fulcrum shaft 69, a limiting pressure plate 610, and a fourth fastening nut 611. An adjusting interlocking plate 61 is installed between the first connecting rod 7 and the second connecting rod 8. A limiting pressure plate 610 is fixed to the outer wall of the top of the adjusting interlocking plate 61. The limiting pressure plate 610 only acts on the adjusting interlocking plate 61. A second interlocking shaft 62 is sleeved on the adjusting interlocking plate 61 and the top rod 4. A locking shaft 62 is threadedly connected to a clamping bolt 66 on the outer wall of one side of the adjusting interlock plate 61. A locking mechanism support 63 is installed on one side of the cabinet door 13. A third welding stud 64 is sleeved on one side of the cabinet door 13, and the outer side of the third welding stud 64 is connected to the inner wall of the locking mechanism support 63. A third fastening nut 65 is threadedly connected to the outer side of the locking mechanism support 63. The adjusting interlock plate 61 includes a limiting hole 61-1, a fulcrum hole 61-2, and a clearance hole 61-3. The adjusting interlock plate 61 has a limiting hole 61-1, and the outer side of the guide shaft 68 is... The adjusting interlocking plate 61 is fitted onto the inner wall of the limiting hole 61-1. A fulcrum hole 61-2 is provided on the adjusting interlocking plate 61, and the outer side of the fulcrum shaft 69 is fitted onto the inner wall of the fulcrum hole 61-2. A clearance hole 61-3 is provided on the adjusting interlocking plate 61, and one side of the clearance hole 61-3 is fitted onto the outer wall of the first connecting rod 7. A first interlocking shaft 12 is installed in the first connecting rod 7 and the clearance hole 61-3, allowing the fulcrum hole 61-2 on the adjusting interlocking plate 61 to rotate along the fulcrum shaft 69, and then allowing the limiting hole 61-1 on the adjusting interlocking plate 61 to rotate along the guide shaft 68. The sliding mechanism allows the first connecting rod 7 to move up and down through the clearance hole 61-3. The remote interlocking mechanism 10 includes a fourth welding stud 101 and a fifth fastening nut 102. The fourth welding stud 101 is symmetrically welded to one side of the cabinet door 13, and one side of the fourth welding stud 101 is connected through to the inner wall of the interlocking mechanism support 63. The fourth welding stud 101 is threadedly connected to the fifth fastening nut 102 on one side of the interlocking mechanism support 63. The interlocking mechanism support 63 is fixed in position by the fourth welding stud 101 and the fifth fastening nut 102.

[0030] When a near-point interlock is required, the third welding stud 64 is welded to the inside of the cabinet door 13. The interlocking mechanism support 63 is then fixed to the cabinet door 13 using the third welding stud 64 and the third fastening nut 65. The fulcrum shaft 69 then passes through the interlocking mechanism support 63, adjusts the interlocking plate 61, passes through the inside of the limiting pressure plate 610, and is tightened using the fourth fastening nut 611. The guide shaft 68 then passes through the interlocking mechanism support 63, adjusts the interlocking plate 61, passes through the limiting pressure plate 610, and is tightened using the fourth fastening nut 611. The second interlocking shaft... 62 passes through the second connecting rod 8, the adjusting interlock plate 61, and then through the first connecting rod 7, and is tightened by the fourth fastening nut 611, causing the second connecting rod 8 to move up and down. This causes the adjusting interlock plate 61 to rotate around the fulcrum shaft 69, thus achieving interlocking closure and opening. The limiting hole 61-1 ensures that the adjusting interlock plate 61 avoids the guide shaft 68, while the limiting pressure plate 610 prevents the adjusting interlock plate 61 from being lifted by force. At the same time, the adjusting interlock plate 61 drives the first connecting rod 7 to move up and down, which facilitates the smooth movement of the second connecting rod 8 and the first connecting rod 7 through the clearance hole 61-3.

[0031] Example 3

[0032] See Figures 8-9 The door lock 9 includes a gear shaft 91, a latch 92, a rack 93, a rack threaded hole 94, a latch clamping screw 95, a fourth connecting bolt 96, a clamping nut 97, and a rack connecting rod support 98. The gear shaft 91 is mounted on one side of the door lock 9. A rack 93 is symmetrically meshed on the outer side of the gear shaft 91. A rack threaded hole 94 is symmetrically opened on one side of the rack 93. A rack connecting rod support 98 is fitted to one side of the rack threaded hole 94. The rack connecting rod support 98 and the rack... The threaded hole 94 is internally threaded with a fourth connecting bolt 96. One side of the rack and pinion support 98 is attached to the outer wall of the second connecting rod 8. A third interlocking shaft 67 is installed between the second connecting rod 8 and the rack and pinion support 98. A clamping nut 97 is threadedly connected to one side of the third interlocking shaft 67. A locking tongue 92 is installed on one side of the gear shaft 91, and one side of the locking tongue 92 is inserted into the inner wall of the cabinet 14. A locking tongue clamping screw 95 is installed in the locking tongue 92 and the gear shaft 91.

[0033] The door lock 9 is installed on the cabinet door 13. The key turns the gear shaft 91 to rotate, which drives the lock tongue 92 to rotate, thereby locking the cabinet body 14. At the same time, it drives the rack 93 to move up and down, so that the rack 93 drives the second connecting rod 8 to move up and down through the rack and pinion support 98. This facilitates the unlocking and locking of the cabinet door 13 and the cabinet body 14, and makes it easy to protect the cabinet body 14 through the cabinet door 13.

[0034] Example 4

[0035] See Figures 3-5The remote interlocking mechanism 10 includes a first interlocking shaft 12, a fourth welding stud 101, and a fifth fastening nut 102. The first interlocking shaft 12 is installed on the interlocking mechanism support 63 and the adjusting interlocking plate 61. The outer side of the first interlocking shaft 12 is threaded with a fifth fastening bolt 121. A guide shaft 68 is installed on the interlocking mechanism support 63 and the limiting pressure plate 610. A fulcrum shaft 69 is installed on one side of the interlocking mechanism support 63 and the limiting pressure plate 610 on the guide shaft 68. The fourth welding stud 101 is symmetrically welded on one side of the cabinet door 13, and one side of the fourth welding stud 101 is connected through to the inner wall of the interlocking mechanism support 63. The fifth fastening nut 102 is threadedly connected to the fourth welding stud 101 on one side of the interlocking mechanism support 63.

[0036] When the remote interlocking mechanism 10 needs to be remotely interlocked, the fourth welding stud 101 is welded to the inside of the cabinet door 13. The interlocking mechanism support 63 is fixed to the cabinet door 13 by the fourth welding stud 101 and the fifth fastening nut 102. Then, the fulcrum shaft 69 passes through the interlocking mechanism support 63, and the adjusting interlocking plate 61 passes through the limiting pressure plate 610 and is tightened by the fourth fastening nut 611. Then, the guide shaft 68 passes through the interlocking mechanism support 63, and the adjusting interlocking plate 61 passes through the limiting pressure plate 610. The positioning plate 610 is tightened by the fourth fastening nut 611, and then the first interlocking shaft 12 passes through the adjusting interlocking plate 61, then through the second connecting rod 8, and is tightened by the clamping bolt 121. The first connecting rod 7 moves up and down, and then drives the adjusting interlocking plate 61 to rotate around the fulcrum shaft 69, which facilitates the interlocking closing and opening. This ensures that the limiting hole 61-1 ensures that the adjusting interlocking plate 61 avoids the guide shaft 68, and also prevents the adjusting interlocking plate 61 from being lifted by force.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A complete set of equipment using multi-point interlocking, characterized in that, The cabinet includes a top interlock plate (1), an electromagnetic lock (2), a normally closed contact (3), a top rod (4), a guide plate (5), an interlocking mechanism (6), a first connecting rod (7), a second connecting rod (8), a door lock (9), a remote interlocking mechanism (10), fastening screws (11), a cabinet door (13), and a cabinet body (14). A cabinet door (13) is installed on one outer wall of the cabinet body (14), and a top interlock plate (1) is installed on one inner wall of the cabinet body (14). A fastening screw (11) is fitted onto the top interlock plate (1), and one end of the fastening screw (11) is threaded onto the inner wall of the cabinet body (14). An electromagnetic lock (2) is installed at the bottom of the top interlock plate (1), and one side of the electromagnetic lock (2)... A normally closed contact (3) is installed. When the interlock is broken, the top of the button (35) contacts the top rod (4), the normally closed contact (3) is electrically disconnected, and the electromagnetic lock is unlocked. A guide plate (5) is sleeved on the outside of the top rod (4), and one side of the guide plate (5) is fixed to the outer wall of the cabinet door (13). A first connecting rod (7) is installed at the bottom of the top rod (4), and a second connecting rod (8) is rotatably installed at the other end of the first connecting rod (7). An interlocking mechanism (6) is installed on the second connecting rod (8) and the first connecting rod (7). A door lock (9) is installed in the middle of the cabinet door (13), and a remote interlocking mechanism (10) is installed on the outer wall of the cabinet door (13) at the bottom of the first connecting rod (7).

2. The multi-point interlocking system for a complete set of equipment according to claim 1, characterized in that, The electromagnetic lock (2) includes a locking rod (21), a first welding bolt (22) and a first fastening nut (23). The electromagnetic lock (2) is equipped with a locking rod (21), and one end of the locking rod (21) is fixed to the outer wall of the cabinet top interlocking plate (1). The electromagnetic lock (2) is fitted with the first welding bolt (22), and the outer side of the first welding bolt (22) is threaded with the first fastening nut (23).

3. The multi-point interlocking system for a complete set of equipment according to claim 1, characterized in that, The normally closed contact (3) includes a contact fastening bolt (31), a second welding stud (32), a second fastening nut (33), a contact mounting bracket (34), and a button (35). The contact mounting bracket (34) is fixed to one side of the outer wall of the normally closed contact (3). The contact fastening bolt (31) is sleeved on one side of the contact mounting bracket (34), and one end of the contact fastening bolt (31) is threaded to the inner wall of the normally closed contact (3). The second welding stud (32) is symmetrically installed on one side of the cabinet door (13), and one side of the second welding stud (32) penetrates the inner wall of the contact mounting bracket (34). The second welding stud (32) is threaded to the second fastening nut (33).

4. A multi-point interlocking system for a complete set of equipment according to claim 1, characterized in that, The interlocking mechanism (6) includes an adjusting interlocking plate (61), a second interlocking shaft (62), an interlocking mechanism support (63), a third welding stud (64), a third fastening nut (65), a clamping bolt (66), a guide shaft (68), a fulcrum shaft (69), a limiting pressure plate (610), and a fourth fastening nut (611). An adjusting interlocking plate (61) is installed between the first connecting rod (7) and the second connecting rod (8). A limiting pressure plate (610) is fixed to the outer wall of the top of the adjusting interlocking plate (61). The limiting pressure plate (610) only applies to the adjusting interlocking plate (61). The second interlocking shaft (62) is sleeved on the adjusting interlocking plate (61) and the top rod (4). The second interlocking shaft (62) is threaded with a clamping bolt (66) on the outer wall of the adjusting interlocking plate (61) on one side. The cabinet door (13) is equipped with an interlocking mechanism support (63). The cabinet door (13) is sleeved with a third welding stud (64), and the outer side of the third welding stud (64) is connected to the inner wall of the interlocking mechanism support (63). The outer side of the interlocking mechanism support (63) is threaded with a third fastening nut (65).

5. A multi-point interlocking system for a complete set of equipment according to claim 4, characterized in that, The adjusting interlock plate (61) includes a limiting hole (61-1), a fulcrum hole (61-2), and a clearance hole (61-3). The adjusting interlock plate (61) has a limiting hole (61-1), and the outer side of the guide shaft (68) is sleeved on the inner wall of the limiting hole (61-1). The adjusting interlock plate (61) has a fulcrum hole (61-2), and the outer side of the fulcrum shaft (69) is sleeved on the inner wall of the fulcrum hole (61-2). The adjusting interlock plate (61) has a clearance hole (61-3), and one side of the clearance hole (61-3) is attached to the outer wall of the first connecting rod (7). The first connecting rod (7) and the clearance hole (61-3) are fitted with a first interlocking shaft (12).

6. A multi-point interlocking system for a complete set of equipment according to claim 1, characterized in that, The door lock (9) includes a gear shaft (91), a latch (92), a rack (93), a rack threaded hole (94), a latch clamping screw (95), a fourth connecting bolt (96), a clamping nut (97), and a rack connecting rod support (98). A gear shaft (91) is mounted on one side of the door lock (9). A rack (93) is symmetrically meshed on the outer side of the gear shaft (91). A rack threaded hole (94) is symmetrically opened on one side of the rack (93). A rack connecting rod support (98) is fitted to one side of the rack threaded hole (94). A fourth connecting bolt (96) is threaded into the rack threaded hole (94). One side of the rack connecting rod support (98) is attached to the outer wall of the second connecting rod (8). A third interlocking shaft (67) is installed between the second connecting rod (8) and the rack connecting rod support (98). A clamping nut (97) is threaded onto one side of the third interlocking shaft (67). A locking tongue (92) is installed on one side of the gear shaft (91), and one side of the locking tongue (92) is inserted into the inner wall of the cabinet (14). A locking tongue clamping screw (95) is installed inside the locking tongue (92) and the gear shaft (91).

7. A multi-point interlocking system for a complete set of equipment according to claim 4, characterized in that, The remote interlocking mechanism (10) includes a first interlocking shaft (12), a fourth welding stud (101), and a fifth fastening nut (102). The first interlocking shaft (12) is installed on the interlocking mechanism support (63) and the adjusting interlocking plate (61). The outer side of the first interlocking shaft (12) is threaded with a fifth fastening bolt (121). The guide shaft (68) is installed on the interlocking mechanism support (63) and the limiting pressure plate (610). The fulcrum shaft (69) is installed on one side of the guide shaft (68) of the interlocking mechanism support (63) and the limiting pressure plate (610). The fourth welding stud (101) is symmetrically welded on one side of the cabinet door (13), and one side of the fourth welding stud (101) is connected through to the inner wall of the interlocking mechanism support (63). The fifth fastening nut (102) is threaded on one side of the interlocking mechanism support (63).

8. The multi-point interlocking method for a complete set of equipment according to claim 1, characterized in that, The cabinet top interlock plate (1) is installed on the column of the cabinet (14) by fastening screws (11), and the first welding bolt (22) is welded to the inside of the cabinet door (13). The electromagnetic lock (2) is fastened to the cabinet door (13) by nuts. The top rod (4) hits the button (35) of the normally closed contact (3), the electromagnetic lock (2) is activated, the locking rod (21) is removed from the cabinet top interlock plate (1), and the interlock is opened. When the cabinet door (13) is closed, the interlock is closed, the top rod (4) is retracted, the normally closed contact (3) is closed, the electromagnetic lock (2) is activated, the locking rod (21) is inserted into the cabinet top interlock plate (1), and the top interlock is closed. Multiple locking points can be set for the complete set of equipment to ensure that the cabinet door (13) can be locked, improve the equipment's ability to resist short circuit faults, and share the internal stress of locking through multiple locking points to avoid deformation of the locking shaft. During long-term operation, this avoids major safety hazards. When a near-point interlock is required, the third welding stud (64) is welded to the inside of the cabinet door (13). The interlock mechanism support (63) is then fixed to the cabinet door (13) using the third welding stud (64) and the third fastening nut (65). The fulcrum shaft (69) passes through the interlock mechanism support (63), the adjusting interlock plate (61), and then through the inside of the limiting pressure plate (610). It is then tightened by the fourth fastening nut (611). The guide shaft (68) passes through the interlock mechanism support (63), the adjusting interlock plate (61) passes through the limiting pressure plate (610), and is then tightened by the fourth fastening nut (611). The second interlock shaft (62) passes through the second connecting rod (8), the adjusting interlock plate (61) passes through the first connecting rod. (7) Then, tighten the fourth fastening nut (611) to make the second connecting rod (8) move up and down, and then drive the adjusting interlock plate (61) to rotate around the fulcrum axis (69) to realize the interlocking closing and opening. The limiting hole (61-1) ensures that the adjusting interlock plate (61) avoids the guide shaft (68), while the limiting pressure plate (610) prevents the adjusting interlock plate (61) from being lifted by force. At the same time, the adjusting interlock plate (61) drives the first connecting rod (7) to move up and down, so that the clearance hole (61-3) can ensure the smooth movement of the second connecting rod (8) and the first connecting rod (7). When the remote interlocking mechanism (10) needs to be remotely interlocked, the fourth welding stud (101) is welded to the inside of the cabinet door (13), and the interlocking mechanism support (63) passes through The fourth welding stud (101) and the fifth fastening nut (102) are fixed on the cabinet door (13). Then, the fulcrum shaft (69) passes through the interlocking mechanism support (63), the adjusting interlocking plate (61) passes through the limiting pressure plate (610), and is tightened by the fourth fastening nut (611). Then, the guide shaft (68) passes through the interlocking mechanism support (63), the adjusting interlocking plate (61) passes through the limiting pressure plate (610), and is tightened by the fourth fastening nut (611). Then, the first interlocking shaft (12) passes through the adjusting interlocking plate (61), the second connecting rod (8), and is tightened by the clamping bolt (121). The first connecting rod (7) moves up and down, and then drives the adjusting interlocking plate (61) to rotate around the fulcrum shaft (69). The rotation movement facilitates the interlocking and opening, ensuring that the limiting hole (61-1) ensures that the adjusting interlock plate (61) avoids the guide shaft (68), and also prevents the limiting pressure plate (610) from being lifted by force. The door lock (9) is installed on the cabinet door (13). The key turns the gear shaft (91) to rotate, driving the lock tongue (92) to rotate, thereby completing the action of locking the cabinet body (14). At the same time, it drives the rack (93) to move up and down, so that the rack (93) drives the second link (8) to move up and down through the rack and pinion support (98), which facilitates the unlocking and locking of the cabinet door (13) and the cabinet body (14), and facilitates the protection of the cabinet body (14) through the cabinet door (13).

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