Interlocking structure of switchgear

Abstract

The utility model discloses an interlocking structure of switch equipment, which comprises an isolation circuit breaker interlocking mechanism, the isolation circuit breaker interlocking mechanism is arranged between an isolation mechanism and a circuit breaker mechanism, the isolation mechanism is provided with an operation shaft, the circuit breaker mechanism is provided with a switching-on half shaft, a switching-on button and an output shaft, and the isolation circuit breaker interlocking mechanism is provided with an interlocking mechanism. And interlocking parts are respectively arranged corresponding to the operation shaft of the isolation mechanism and the closing button and the output shaft of the circuit breaker mechanism, and in the corresponding working state, the isolation circuit breaker interlocking mechanism is matched with the operation shaft, the closing button and the output shaft of the isolation mechanism through the corresponding interlocking parts to realize interlocking. The limitation of the interlocking mechanism on the door lifting rod is realized through two independent motions of translation and rotation, so that the influence of interlocking failure or processing error on the closing and opening of the switch is avoided. No direct high-speed rigid transmission exists between the isolation circuit breaker interlocking mechanisms, so that the service life of the interlocking mechanism and the switch mechanism is prolonged, and the interlocking stability and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to an interlocking structure for a switchgear. Background Technology

[0002] Switchgear is widely used in switch cabinets due to its small size, compact structure, and high degree of integration. Switchgear can switch between three operating positions: closed, disconnected, and grounded, to ensure safe and stable operation of electrical work.

[0003] To ensure the safety of switchgear operation, the following safety points must be ensured: (1) After the isolating mechanism completes isolating tripping (or grounding tripping), the circuit breaker mechanism cannot perform circuit breaking and closing operations; otherwise, there will be safety hazards; (2) The circuit breaker mechanism can only perform circuit breaking and closing operations after the isolating mechanism completes isolating closing or grounding closing; (3) The isolating mechanism can only be operated to isolating tripping or grounding tripping after the circuit breaker is tripped. Therefore, in order to ensure safe operation, an interlocking structure is usually set between the isolating mechanism and the circuit breaker mechanism in switchgear.

[0004] The interlocking structure of existing switchgear may be affected by interlocking failure or manufacturing errors, which could impact the closing and opening of the switch. In addition, there is a direct high-speed rigid transmission between the interlocking plates and the mechanism, which affects the lifespan of both the interlocking and the mechanism. Utility Model Content

[0005] In view of the shortcomings of the existing interlocking structure of the switchgear, the applicant provides a reasonably structured interlocking structure for the switchgear, which avoids the impact of interlocking failure or manufacturing errors on the closing and opening of the switch.

[0006] The technical solution adopted in this utility model is as follows:

[0007] An interlocking structure for a switchgear includes an isolating circuit breaker interlocking mechanism disposed between an isolating mechanism and a circuit breaker mechanism. The isolating mechanism is provided with an operating shaft, and the circuit breaker mechanism is provided with a closing half-shaft, a closing button, and an output shaft. The isolating circuit breaker interlocking mechanism is provided with interlocking parts corresponding to the operating shaft of the isolating mechanism, the closing button of the circuit breaker mechanism, and the output shaft. In the corresponding working state, the isolating circuit breaker interlocking mechanism achieves interlocking by cooperating with the operating shaft, closing button, and output shaft of the isolating mechanism through the corresponding interlocking parts.

[0008] As a further improvement to the above technical solution:

[0009] The isolating circuit breaker interlocking mechanism includes interlocking plate one, interlocking plate two, and interlocking plate three. Interlocking plate one is movably mounted on the isolating mechanism, interlocking plate two is connected to interlocking plate one, and interlocking plate three is movably mounted on the circuit breaker mechanism. Interlocking plate one has a first interlocking part corresponding to the operating shaft of the isolating mechanism, interlocking plate two has a fourth interlocking part corresponding to the closing button, and interlocking plate three has a seventh interlocking part corresponding to the output shaft. Interlocking plate one has a third interlocking part, and interlocking plate three has a corresponding fifth interlocking part. The third and fifth interlocking parts cooperate to achieve interlocking.

[0010] The isolation circuit breaker interlocking mechanism includes interlocking plate one and interlocking plate three. Interlocking plate one is movably mounted on the isolation mechanism and is connected to interlocking plate three. A first interlocking part is provided on interlocking plate one corresponding to the operating shaft of the isolation mechanism. A seventh interlocking part is provided on interlocking plate three corresponding to the output shaft and an eighth interlocking part is provided corresponding to the closing button.

[0011] An indicator shaft is provided on the isolation mechanism, and a cam is sleeved on the indicator shaft; a second interlocking part is provided on the interlocking plate one, corresponding to the cam; a limit crank arm is provided on the output shaft of the circuit breaker mechanism, and the seventh interlocking part of the interlocking plate three cooperates with the limit crank arm to achieve interlocking.

[0012] The circuit breaker mechanism is provided with a guide assembly, which has a guide groove; the guide assembly corresponds to the eighth interlocking part on the second or third interlocking plate, and the second or eighth interlocking part extends into the guide groove.

[0013] A groove is provided on the first interlocking part.

[0014] The second interlock plate is equipped with a manual push-to-unlock mechanism.

[0015] The interlocking plate is equipped with a manual isolation unlocking part.

[0016] The isolating circuit breaker interlocking mechanism includes a fixed plate, which is fixed on the isolating mechanism. Interlocking plate one is movably mounted on the fixed plate via a first guide post, and a first spring is provided between interlocking plate one and the fixed plate. Interlocking plate three is movably mounted on the circuit breaker mechanism via a second guide post, and a second spring is provided between interlocking plate three and the fixing part of the circuit breaker mechanism.

[0017] The interlocking structure also includes a cabinet door interlocking mechanism. The cabinet door interlocking mechanism is equipped with a door lifting rod, a connecting plate, and a linkage component. The connecting plate is fixedly connected to the door lifting rod, and the linkage component is inserted into the connecting plate. On the linkage component, a ninth interlocking part is provided corresponding to the sixth interlocking part of the interlocking plate three. The ninth interlocking part and the sixth interlocking part cooperate to achieve interlocking.

[0018] The beneficial effects of this utility model are as follows:

[0019] The interlocking components of this utility model's isolating circuit breaker interlocking mechanism achieve interlocking through vertical translational movement, while the interlocking components of the cabinet door interlocking mechanism achieve interlocking through rotation. That is, the interlocking mechanism restricts the door lifting rod through two independent movements: translation and rotation. This avoids the impact of interlocking failure or manufacturing errors on the opening and closing of the switch. The interlocking components of the isolating circuit breaker interlocking mechanism only perform vertical translational movement, without direct high-speed rigid transmission between them and the mechanism. This helps to improve the lifespan of both the interlocking and switching mechanisms, and enhances the stability and reliability of the interlocking. Attached Figure Description

[0020] Figures 1 to 5 The diagram shown is a schematic diagram of the first embodiment of this utility model:

[0021] Figure 1 A schematic diagram showing the operating mechanism in its first state (isolation trip, circuit breaker trip);

[0022] Figure 2 A schematic diagram showing the operating mechanism in the second state (isolation closed, circuit breaker open);

[0023] Figure 3 A schematic diagram showing the operating mechanism in the third state (isolation grounding, circuit breaker tripped);

[0024] Figure 4 A schematic diagram showing the operating mechanism in the fourth state (isolation closing, circuit breaker closing);

[0025] Figure 5 This is a schematic diagram showing the operating mechanism in the fifth state (isolation grounding, circuit breaker closed).

[0026] Figures 6 to 8 The diagram shown is a schematic representation of the second embodiment of this utility model:

[0027] Figure 6 A schematic diagram showing the operating mechanism in its first state (isolation trip, circuit breaker trip);

[0028] Figure 7 A schematic diagram showing the operating mechanism in the second state (isolation closed, circuit breaker open);

[0029] Figure 8 This is a schematic diagram showing the operating mechanism in the fourth state (isolation closing, circuit breaker closing).

[0030] In the picture:

[0031] 1. Isolation mechanism; 11. Isolation operating shaft; 12. Grounding operating shaft; 13. Indicating shaft; 14. Cam;

[0032] 2. Circuit breaker mechanism; 21. Closing half-shaft; 22. Closing button; 23. Closing rotary plate; 24. Output shaft; 25. Limiting crank arm; 26. Energy storage shaft; 27. Guide assembly; 271. Guide plate; 272. Guide groove;

[0033] 3. Isolation and circuit breaking interlocking mechanism; 31. Fixed plate; 311. First slide groove; 312. Second slide groove; 32. Interlocking plate one; 321. First interlocking part; 322. Groove; 323. Second interlocking part; 324. Third interlocking part; 33. Interlocking plate two; 331. Third slide groove; 332. Fourth interlocking part; 333. Notch; 334. Hand-push isolation unlocking part; 34. Interlocking plate three; 341. Fourth slide groove; 342. Fifth interlocking part; 343. Sixth interlocking part; 344. Seventh interlocking part; 345. Eighth interlocking part; 35. First guide post; 37. Second guide post; 38. First spring; 39. Second spring;

[0034] 4. Cabinet door interlocking mechanism; 41. Door lifting rod; 42. Connecting plate; 43. Linkage component; 431. Ninth interlocking part. Detailed Implementation

[0035] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0036] I. First embodiment of this utility model: (Refer to...) Figures 1 to 5 .

[0037] This embodiment features an upper isolator and a lower circuit breaker arrangement. The isolator mechanism 1 is positioned above the circuit breaker mechanism 2. An isolator circuit breaker interlocking mechanism 3 and a cabinet door interlocking mechanism 4 are installed between the isolator mechanism 1 and the circuit breaker mechanism 2. The operating mechanism has the following states: The first state is isolator tripping and circuit breaker tripping (see reference). Figure 1 As shown), the second state is isolation closing and circuit breaker opening (refer to...). Figure 2 The third state is isolation grounding and circuit breaker tripping (refer to...). Figure 3 The fourth state is isolation closing and circuit breaker closing (see reference). Figure 4 The fifth state is isolation grounding and circuit breaker closed (refer to...). Figure 5 The isolation circuit breaker interlocking mechanism 3 and the cabinet door interlocking mechanism 4 interlock the isolation mechanism 1 and the circuit breaker mechanism 2 in various operating states.

[0038] The isolation mechanism 1 is equipped with an isolation operation shaft 11, a grounding operation shaft 12, and an indicator shaft 13. A cam 14 is sleeved on the indicator shaft 13, and the cam 14 can be driven by the indicator shaft 13 to rotate to the required angle.

[0039] The circuit breaker mechanism 2 is equipped with a closing half-shaft 21 and an output shaft 24, with the output shaft 24 energized via the closing half-shaft 21. Corresponding to the closing half-shaft 21, the circuit breaker mechanism 2 is equipped with a closing button 22 and a closing rotary plate 23. The closing button 22, via the closing rotary plate 23, allows operation of the closing half-shaft 21. A limit crank arm 25 is fitted onto the output shaft 24, allowing it to rotate with the output shaft 24. An energy storage shaft 26 is also provided on the circuit breaker mechanism 2.

[0040] The isolating circuit breaker interlocking mechanism 3 includes a fixed plate 31, an interlocking plate 32, an interlocking plate 33, and an interlocking plate 34. The fixed plate 31 is fixed to the mounting plate of the isolating mechanism 1. The interlocking plate 32 is movably mounted on the fixed plate 31 via a first guide post 35, which is fixed to the interlocking plate 32. A first spring 38 is provided between the interlocking plate 32 and the fixed plate 31. The interlocking plate 33 is movably mounted on the energy storage shaft 26 of the circuit breaker mechanism 2. The interlocking plate 33 is fixedly connected to the interlocking plate 32 and can move up and down with it. The interlocking plate 34 is movably mounted on the mounting plate of the circuit breaker mechanism 2 via a second guide post 37, which is fixed to the circuit breaker mechanism 2. A second spring 39 is provided between the interlocking plate 34 and the second guide post 37. A guide assembly 27 is provided on the energy storage shaft 26 corresponding to the interlocking plate 33. The guide assembly 27 includes a guide plate 271 and a guide groove 272. The guide plate 271 is sleeved on the energy storage shaft 26, and the guide groove 272 is provided on the guide plate 271. The guide groove 272 can be opened on the guide plate 271, or two guide plates 271 with a distance between them can be sleeved on the energy storage shaft 26. The distance between the two guide plates 271 forms the guide groove 272. The interlocking plate 33 extends into the guide groove 272. The guide groove 272 can provide guidance for the up and down movement of the interlocking plate 33, prevent the interlocking plate 33 from deviating, make the movement of the interlocking plate 33 more stable and reliable, ensure that the interlocking plate 33 moves into place, and ensure the reliability of the interlock.

[0041] A first groove 311 is provided on the fixed plate 31 corresponding to the first guide post 35. The first guide post 35 passes through the first groove 311 and can move up and down along the first groove 311. A second groove 312 is provided on the fixed plate 31 corresponding to the interlocking plate 32. The interlocking plate 32 passes through the second groove 312 and can move up and down within the second groove 312.

[0042] The top of the interlocking plate 32, corresponding to the isolation operating shaft 11 and the grounding operating shaft 12, is provided with a first interlocking part 321. The first interlocking part 321 has a groove 322 facing the isolation operating shaft 11 and the grounding operating shaft 12. The first interlocking part 321 is interlocked with the isolation operating shaft 11 and the grounding operating shaft 12: in the first state (refer to...) Figure 1The first interlocking part 321 moves downward, and the groove 322 moves away from the isolation operating shaft 11 and the grounding operating shaft 12, allowing the isolation operating shaft 11 or the grounding operating shaft 12 to be operated; in the second to fifth states (refer to...) Figures 2 to 5 The first interlocking part 321 moves upward, and the groove 322 engages with the isolation operating shaft 11 and the grounding operating shaft 12, blocking the operating shafts. The isolation operating shaft 11 and the grounding operating shaft 12 cannot be operated. A second interlocking part 323 is provided on the interlocking plate 32, corresponding to the cam 14. The second interlocking part 323 interlocks with the cam 14: In the first state (refer to...) Figure 1 ), cam 14 rotates to a position above the second interlocking part 323, preventing the interlocking plate 32 from moving upward; in the second to fifth states (refer to Figures 2 to 5 Cam 14 rotates open from above the second interlocking part 323, releasing the lock on the second interlocking part 323. A third interlocking part 324 is provided at the bottom of interlocking plate 1 32, corresponding to interlocking plate 34. The third interlocking part 324 interlocks with interlocking plate 34, and its main function is to ensure proper locking in the fourth and fifth states (see reference). Figure 4 , Figure 5 Interlocking plate 34 blocks the third interlocking part 324, preventing the manual pulling down of interlocking plate 2 33 to perform isolation or grounding tripping operations.

[0043] A third slide groove 331 is provided on the interlocking plate 23 corresponding to the energy storage shaft 26. The energy storage shaft 26 passes through the third slide groove 331, and the interlocking plate 23 can move up and down along the energy storage shaft 26 through the third slide groove 331. A fourth interlocking part 332 is provided on the interlocking plate 23 corresponding to the closing button 22. The fourth interlocking part 332 is interlocked with the closing button 22: in the first state (refer to...) Figure 1 Interlock plate 23 moves down, and the fourth interlock part 332 engages with the pressing path of the closing button 22, locking the closing button 22 and preventing it from being pressed, thus avoiding circuit breaker closing operation in the isolated open state; in the second to fifth states (refer to...) Figures 2 to 5 When the interlocking plate 23 moves upward, the fourth interlocking part 332 moves away from the pressing path of the closing button 22, releasing the lock on the closing button 22. The fourth interlocking part 332 has a notch 333 on the side facing the closing button 22 to facilitate the interlocking between the fourth interlocking part 332 and the closing button 22, ensuring the reliability of the interlock. The interlocking plate 23 is equipped with a manual push-to-unlock part 334, which can be manually unlocked in the second or third state.

[0044] A fourth sliding groove 341 is provided on the interlocking plate 34 corresponding to the second guide post 37. The second guide post 37 passes through the fourth sliding groove 341, allowing the interlocking plate 34 to move up and down along the second guide post 37 via the fourth sliding groove 341. A fifth interlocking part 342 is provided at the top of the interlocking plate 34, corresponding to the third interlocking part 324 of the interlocking plate 1 32. The fifth interlocking part 342 is interlocked with the third interlocking part 324. A sixth interlocking part 343 is provided on the interlocking plate 34, corresponding to the cabinet door interlocking mechanism 4. The sixth interlocking part 343 is interlocked with the cabinet door interlocking mechanism 4. A seventh interlocking part 344 is provided at the bottom of the interlocking plate 34, corresponding to the limiting crank arm 25. The seventh interlocking part 344 is interlocked with the limiting crank arm 25 in the first to third states (refer to...). Figures 1 to 3 The limiting crank arm 25 rotates open from below the seventh interlocking part 344, releasing the lock on the seventh interlocking part 344; in the fourth and fifth states (refer to...) Figure 4 , Figure 5 The limiting crank arm 25 rotates to a position below the seventh interlocking part 344, preventing the interlocking plate 34 from moving downward.

[0045] The cabinet door interlocking mechanism 4 is equipped with a door lifting rod 41, a connecting plate 42, and a linkage 43. One end of the door lifting rod 41 is connected to the door handle component, and the other end is connected to the cabinet door (not shown in the figure). The connecting plate 42 is fixedly connected to the door lifting rod 41. One end of the linkage 43 is inserted into the connecting groove of the connecting plate 42. The linkage 43 can be driven by the connecting plate 42 to swing and transmit motion. On the linkage 43, a ninth interlocking part 431 is provided corresponding to the sixth interlocking part 343 of the interlocking plate 34. The ninth interlocking part 431 is interlocked with the sixth interlocking part 343: in the first to third states (refer to...). Figures 1 to 3 The sixth interlocking part 343 moves to a position that blocks the movement path of the ninth interlocking part 431, thus blocking the movement of the linkage 43; in the fourth and fifth states (refer to...) Figure 4 , Figure 5 The ninth interlocking part 431 of the sixth interlocking part 343 moves away from the movement path, releasing the lock on the linkage 43.

[0046] The interlocking components of the isolating circuit breaker interlocking mechanism 3 of this utility model achieve interlocking through vertical translational movement, while the interlocking components of the cabinet door interlocking mechanism 4 achieve interlocking through rotation. That is, the interlocking mechanism restricts the door lifting rod 41 through two independent movements: translation and rotation. This avoids the impact of interlocking failure or manufacturing errors on the opening and closing of the switch. The interlocking components of the isolating circuit breaker interlocking mechanism 3 only perform vertical translational movement, without direct high-speed rigid transmission between them and the mechanism. This is beneficial for improving the lifespan of both the interlocking and switching mechanisms, and enhancing the stability and reliability of the interlocking.

[0047] The interlocking process for each state of the operating mechanism is as follows:

[0048] like Figure 1As shown, in the first state, the isolating circuit breaker trips, the limit crank arm 25 releases the lock on the seventh interlocking part 344 of the interlocking plate 34, the second spring 39 drives the interlocking plate 34 to move down, and the sixth interlocking part 343 blocks the movement path of the ninth interlocking part 431 of the linkage 43; the cam 14 rotates and pushes the interlocking plate 1 32 down through the second interlocking part 323, the interlocking plate 1 32 moves down, the first interlocking part 321 moves away from the isolating operating shaft 11 and the grounding operating shaft 12 to avoid them, at the same time the second interlocking plate 2 33 moves down with the first interlocking plate 1 32, and the fourth interlocking part 332 locks the closing button 22; at this time, the isolating operating shaft 11 or the grounding operating shaft 12 of the isolating mechanism 1 can be operated directly, the closing of the circuit breaker mechanism 2 cannot be operated, and the cabinet door cannot be opened;

[0049] like Figure 2 , Figure 3 As shown, in the second state (isolation closing, circuit breaker opening) or the third state (isolation grounding, circuit breaker opening), cam 14 rotates to release the lock on the second interlocking part 323. Interlocking plate 1 32 moves upward under the action of the first spring 38, and the first interlocking part 321 moves upward to block the isolation operating shaft 11 and the grounding operating shaft 12. At the same time, interlocking plate 2 33 moves upward with interlocking plate 1 32. The fourth interlocking part 332 releases the lock on the closing button 22, and interlocking plate 1 32 releases its obstruction of interlocking plate 3 34. Interlocking plate 3 34 maintains the linkage. The obstruction of component 43; at this time, the closing button 22 can be pressed to realize the circuit breaker closing operation. After closing, if it is in the fourth state (isolation closing, circuit breaker closing), the cabinet door cannot be opened. If it is in the fifth state (grounding closing, circuit breaker closing), the cabinet door can be opened. Alternatively, manual unlocking can be performed by pushing the isolation unlocking part 334 of the interlocking plate 2 33. After unlocking, the isolation operating shaft 11 or grounding operating shaft 12 of the isolation mechanism 1 can be operated to perform isolation opening or grounding opening operation (i.e., the first state, isolation opening, circuit breaker opening). The cabinet door cannot be opened.

[0050] like Figure 4 As shown, in the fourth state, the isolating circuit breaker is closed, the first interlocking part 321 of the interlocking plate 32 blocks the isolating operating shaft 11 and the grounding operating shaft 12, the limit crank arm 25 rotates, and the interlocking plate 34 is pushed up by the seventh interlocking part 344. The interlocking plate 34 moves up, and the fifth interlocking part 342 blocks the third interlocking part 324 of the interlocking plate 32. At this time, manual unlocking cannot be performed by pushing the isolating unlocking part 334 of the interlocking plate 2. The isolating operating shaft 11 or the grounding operating shaft 12 of the isolating mechanism 1 cannot be operated. At this time, although the interlocking plate 34 releases the unlocking of the linkage 43, the isolating mechanism 1 is in the non-grounded closed state, and the cabinet door cannot be opened.

[0051] like Figure 5As shown, in the fifth state, the grounding is isolated and the circuit breaker is closed. The first interlocking part 321 of the interlocking plate 1 blocks the isolation operating shaft 11 and the grounding operating shaft 12. The limit crank arm 25 pushes the interlocking plate 34 upward, and the interlocking plate 34 blocks the interlocking plate 1 32. The interlocking plate 34 releases its obstruction of the linkage 43. At this time, manual unlocking cannot be performed by pushing the isolation unlocking part 334 of the interlocking plate 2 33. The isolation operating shaft 11 or the grounding operating shaft 12 of the isolation mechanism 1 cannot be operated, and the cabinet door can be opened.

[0052] II. Second embodiment of this utility model: (Refer to) Figures 6 to 8 .

[0053] This embodiment features a structure with a lower isolator and an upper circuit breaker, with the isolator mechanism 1 positioned below the circuit breaker mechanism 2.

[0054] Unlike the first embodiment, this embodiment omits the second interlocking plate 33 and sets the structure interlocked with the closing button 22 and the manual push isolation unlocking part 334 on the third interlocking plate 34. The third interlocking plate 34 is fixedly connected to the first interlocking plate 32, thus saving the interlocking structure between the first interlocking plate 32 and the third interlocking plate 34.

[0055] On interlock plate 34, an eighth interlocking part 345 is provided corresponding to the closing button 22. The eighth interlocking part 345 is interlocked with the closing button 22: in the first state (refer to...) Figure 6 Interlock plate 34 moves upward, and the eighth interlock part 345 engages in the pressing path of the closing button 22, locking the closing button 22 and preventing it from being pressed; in the second to fifth states ( Figure 7 The image shows the second state. Figure 8 (As shown in the fourth state), the eighth interlocking part 345 moves away from the pressing path of the closing button 22, releasing the lock on the closing button 22.

[0056] A guide assembly 27 is provided on the energy storage shaft 26 of the circuit breaker mechanism 2, corresponding to the eighth interlocking part 345. The eighth interlocking part 345 extends into the guide groove 272 of the guide assembly 27. On the one hand, the guide groove 272 can provide guidance for the up and down movement of the eighth interlocking part 345, prevent the eighth interlocking part 345 from deviating, ensure that the eighth interlocking part 345 moves into place, and ensure the reliability of the interlock. On the other hand, the guide groove 272 can provide additional movement guidance to the interlocking plate 34 through the eighth interlocking part 345, so that the movement of the interlocking plate 34 is more stable and reliable.

[0057] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. An interlocking structure for a switchgear, comprising an isolating circuit breaker interlocking mechanism (3), wherein the isolating circuit breaker interlocking mechanism (3) is disposed between an isolating mechanism (1) and a circuit breaker mechanism (2), wherein an operating shaft is disposed on the isolating mechanism (1), and a closing half-shaft (21), a closing button (22), and an output shaft (24) are disposed on the circuit breaker mechanism (2), characterized in that: On the isolation circuit breaker interlocking mechanism (3), interlocking parts are respectively provided for the operating shaft of the isolation mechanism (1), the closing button (22) of the circuit breaker mechanism (2) and the output shaft (24). In the corresponding working state, the isolation circuit breaker interlocking mechanism (3) cooperates with the operating shaft, closing button (22) and output shaft (24) of the isolation mechanism (1) through the corresponding interlocking parts to achieve interlocking.

2. The interlocking structure of the switchgear according to claim 1, characterized in that: The isolation circuit breaker interlocking mechanism (3) includes interlocking plate one (32), interlocking plate two (33) and interlocking plate three (34). Interlocking plate one (32) is movably mounted on the isolation mechanism (1). Interlocking plate two (33) is connected to interlocking plate one (32). Interlocking plate three (34) is movably mounted on the circuit breaker mechanism (2). The first interlocking part (321) is set on the interlocking plate one (32) corresponding to the operating shaft of the isolation mechanism (1). The fourth interlocking part (332) is set on the interlocking plate two (33) corresponding to the closing button (22). The seventh interlocking part (344) is set on the interlocking plate three (34) corresponding to the output shaft (24). The third interlocking part (324) is set on the interlocking plate one (32). The fifth interlocking part (342) is set on the interlocking plate three (34). The third interlocking part (324) and the fifth interlocking part (342) cooperate to achieve interlocking.

3. The interlocking structure of the switchgear according to claim 1, characterized in that: The isolation circuit breaker interlocking mechanism (3) includes an interlocking plate one (32) and an interlocking plate three (34). The interlocking plate one (32) is movably mounted on the isolation mechanism (1) and is connected to the interlocking plate three (34). The first interlocking part (321) is provided on the interlocking plate one (32) corresponding to the operating shaft of the isolation mechanism (1). The seventh interlocking part (344) is provided on the interlocking plate three (34) corresponding to the output shaft (24) and the eighth interlocking part (345) is provided on the interlocking plate three (34).

4. The interlocking structure of the switchgear according to claim 2 or 3, characterized in that: An indicator shaft (13) is provided on the isolation mechanism (1), and a cam (14) is sleeved on the indicator shaft (13); a second interlocking part (323) is provided on the interlocking plate (32) corresponding to the cam (14); a limit crank arm (25) is provided on the output shaft (24) of the circuit breaker mechanism (2), and the seventh interlocking part (344) of the interlocking plate (34) cooperates with the limit crank arm (25) to achieve interlocking.

5. The interlocking structure of the switchgear according to claim 2 or 3, characterized in that: The circuit breaker mechanism (2) is provided with a guide assembly (27), and the guide assembly (27) is provided with a guide groove (272); the guide assembly (27) corresponds to the eighth interlocking part (345) on the second interlocking plate (33) or the third interlocking plate (34), and the second interlocking plate (33) or the eighth interlocking part (345) extends into the guide groove (272).

6. The interlocking structure of the switchgear according to claim 2 or 3, characterized in that: A groove (322) is provided on the first interlocking part (321).

7. The interlocking structure of the switchgear according to claim 2, characterized in that: The interlocking plate 2 (33) is provided with a manual push isolation unlocking part (334).

8. The interlocking structure of the switchgear according to claim 3, characterized in that: The interlocking plate 3 (34) is equipped with a manual push isolation unlocking part (334).

9. The interlocking structure of the switchgear according to claim 2, characterized in that: The isolation circuit breaker interlocking mechanism (3) includes a fixed plate (31), which is fixed on the isolation mechanism (1). The first interlocking plate (32) is movable up and down on the fixed plate (31) via the first guide post (35). A first spring (38) is provided between the first interlocking plate (32) and the fixed plate (31). The third interlocking plate (34) is movable up and down on the circuit breaker mechanism (2) via the second guide post (37). A second spring (39) is provided between the third interlocking plate (34) and the fixing part of the circuit breaker mechanism (2).

10. The interlocking structure of the switchgear according to claim 1, characterized in that: The interlocking structure also includes a cabinet door interlocking mechanism (4). The cabinet door interlocking mechanism (4) is provided with a door lifting rod (41), a connecting plate (42), and a linkage component (43). The connecting plate (42) is fixedly connected to the door lifting rod (41), and the linkage component (43) is inserted into the connecting plate (42). The linkage component (43) is provided with a ninth interlocking part (431) corresponding to the sixth interlocking part (343) of the interlocking plate three (34). The ninth interlocking part (431) and the sixth interlocking part (343) cooperate to achieve interlocking.

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