A fast miniaturized disconnector for a solid state circuit breaker

Abstract

The application relates to the technical field of disconnectors and discloses a quick miniaturized disconnector for a solid-state circuit breaker, which comprises a bottom plate, a shell fixedly installed on the bottom plate, a display screen fixedly installed on the shell, wiring posts fixedly installed on the side of the shell, a mounting plate fixedly installed in the shell, two groups of first springs arranged on the mounting plate, base plates fixedly connected to the end portions of the first springs, first contact points fixedly installed on the base plates and connected with the corresponding wiring posts. The application has the beneficial effects that the contact and separation of the first contact points and the second contact points are realized through the linear movement of the lifting plate, the quick and stable adjustment of the position of the second contact points is realized, the mechanism movement jam caused by the adhesion of dust and the lubrication dryness is avoided, and the stability of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of disconnector technology, and more specifically to a fast miniaturized disconnector for solid-state circuit breakers. Background Technology

[0002] Circuit breakers, as indispensable protective devices in power transmission and distribution systems, enable rapid disconnection of fault currents. With the rapid development of power electronic devices, solid-state circuit breakers, which use semiconductor devices as switches, have been applied.

[0003] Compared to traditional mechanical circuit breakers, solid-state circuit breakers are smaller, have faster breaking speeds, and are arc-free, giving them significant advantages in low- and medium-voltage applications. Traditional low-voltage DC disconnect switches are mostly single-pole structures, which are relatively large and monostable, failing to meet the isolation and fully electrically controlled bistable requirements of double-pole solid-state circuit breakers. To address these technical issues, patent publication number CN117373855A describes a design that uses electrical signals to control the opening and closing process, exhibiting bistable characteristics. Maintaining the open or closed state does not require current to the electromagnet coil, and it is relatively small. However, it uses two sets of linkages to move the moving contacts. When the disconnect switch is stationary for extended periods, humid air and dust adhere to the rotating components, and factors such as lubrication and drying can easily cause the mechanism to jam, affecting the use of the disconnect switch and reducing equipment stability. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a disconnecting switch device for solid-state circuit breakers, thereby achieving high stability.

[0005] The objective of this invention can be achieved through the following technical solutions: A fast miniaturized disconnecting switch for solid-state circuit breakers includes a base plate, a housing fixedly mounted on the base plate, a display screen fixedly mounted on the housing, and terminals fixedly mounted on the side of the housing. An installation plate is fixedly mounted inside the housing, and two sets of first springs are provided on the installation plate. The ends of the first springs are fixedly connected to a base plate, and first contacts are fixedly mounted on the base plate. The first contacts are connected to corresponding terminals. The housing contains a third support plate, on which a lifting frame is fixedly mounted. A lifting plate is slidably mounted on the lifting frame. Two sets of second contacts corresponding to the first contacts are fixedly mounted on the lifting plate. The second contacts are connected to the corresponding terminals. The third support plate contains a servo module that drives the lifting plate to move.

[0006] As a further embodiment of the present invention: a second protective cylinder is fixedly installed on the substrate, the second protective cylinder is slidably connected to a first protective cylinder fixedly installed on the mounting plate, the first protective cylinder and the second protective cylinder are coaxially arranged, a connecting plate is fixedly installed on the outer side of the second protective cylinder, a mounting post penetrating the connecting plate is fixedly installed on the mounting plate, and two sets of third limiting plates are fixedly installed on the mounting post.

[0007] As a further embodiment of the present invention: a closed cylinder is slidably mounted on the mounting plate, the closed cylinder is coaxially arranged with the first protective cylinder and the closed cylinder is located inside the first protective cylinder, a top plate is fixedly mounted on one end of the closed cylinder, a threaded rod is threadedly connected to the top plate, the threaded rod extends into the closed cylinder and a second support plate is fixedly mounted at the end of the threaded rod, a first support plate is fixedly connected to the end of the first spring away from the base plate, the first support plate abuts against the second support plate, a limiting post is fixedly mounted on the mounting plate and slidably connected to the top plate, and a first limiting plate is provided inside the housing to limit the position of the top plate.

[0008] As a further aspect of the present invention: a motor is fixedly installed on the inner wall of the housing, the motor drives the rotating shaft to rotate, the rotating shaft is located between two sets of top plates, and the first limiting plate is fixedly installed on the rotating shaft.

[0009] As a further aspect of the present invention: two sets of second limiting plates for limiting the position of the connecting plate are fixedly installed on the rotating shaft. When the connecting plate contacts the upper third limiting plate, the upper surface of the second limiting plate is flush with the lower surface of the connecting plate.

[0010] As a further embodiment of the present invention: a bracket is fixedly installed on the top plate, and a ball bearing is rotatably installed on the bracket. The ball bearing is used in conjunction with a support plate fixedly installed on a rotating shaft. The surface of the support plate that contacts the ball bearing has an angle with the horizontal plane.

[0011] As a further aspect of the present invention: a laser rangefinder sensor for detecting the distance between the mounting plate and the upper surface of the connecting plate is fixedly mounted on the mounting plate.

[0012] As a further aspect of the present invention: a connecting groove is provided on the threaded rod, the cross-section of the connecting groove is non-circular, a power rod is slidably connected in the connecting groove, the power rod is rotatably connected to the side wall of the housing, and the power rod extends out of the housing.

[0013] As a further embodiment of the present invention: two sets of guide plates are fixedly installed inside the housing, a third support plate is slidably installed on the guide plates, a pull plate extending out of the housing is fixedly connected to the third support plate, and a limiting block for limiting the position of the pull plate is provided on the housing.

[0014] As a further embodiment of the present invention: two sets of fourth support plates located on both sides of the pull plate are fixedly installed on the outer side of the housing. A second spring is fixedly installed on the surface of the fourth support plate near the pull plate. The second spring is fixedly connected to the limiting block. A protrusion for sliding installation of the limiting block is provided on the side wall of the housing. A slot for the limiting block to extend into is opened on the pull plate. A pressure plate is slidably installed on the pull plate. Pull wires are fixedly connected to both ends of the pressure plate. The pull wires pass through the through holes on the fourth support plate, and the end of the pull wire away from the pressure plate is fixedly connected to the corresponding limiting block.

[0015] The beneficial effects of this invention are: (1) In this invention, the first contact point and the second contact point are contacted and separated by the linear movement of the lifting plate, which realizes the rapid and stable adjustment of the position of the second contact point. The power supply structure is simple, avoiding the sticking of the mechanism due to dust adhesion and lubrication drying, ensuring the smooth adjustment of the position of the second contact point and improving the stability of the equipment.

[0016] (2) In this invention, when energized, the lifting plate moves upward to make the first contact point abut against the second contact point, and then pushes the substrate to move. When the connecting plate contacts the third limiting plate above, it stops. Due to the restriction of the connecting plate and the third limiting plate, the first contact point cannot continue to move upward. The initial compression deformation of the first spring weakens the impact when the first contact point contacts the second contact point. After the position of the substrate is fixed, the first contact point and the second contact point are in fixed contact, which improves the stability of the contact between the first contact point and the second contact point and ensures the stability of the circuit connection. The area of ​​the first spring is enclosed by the top plate, mounting plate, sealing cylinder, first protective cylinder, second protective cylinder and substrate, which avoids impurities adhering to the first spring and causing corrosion of the first spring, and further improves the stability and service life of the equipment.

[0017] (3) In this invention, the top plate and the closed cylinder will move upward. After the first spring returns to its natural compression state, the shaft continues to rotate. The second limiting plate rotates to the bottom of the connecting plate. The first and second limiting plates and the third limiting plate are located on the upper and lower sides of the connecting plate, respectively. At this time, the position of the base plate is completely fixed. When the subsequent lifting plate moves downward, the base plate and the first contact cannot descend. The second contact can instantly separate from the first contact to complete the power-off state, which improves the power-off speed and the safety of the equipment.

[0018] (4) In this invention, the weight of the top plate and the closed cylinder is supported by the support plate, so that the first spring is in a state of no force. During the power-on period, the first spring is in a state of no force. During the power-off period, the first spring is in a state of no force because it is supported by the third limiting plate below. The first spring is only used for buffering when the first contact point and the second contact point are in contact, which greatly reduces the time of the first spring being stressed. It effectively avoids the first spring being stressed and deformed for a long time, and further improves the service life and stability of the equipment. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the shell structure in this invention.

[0022] Figure 3 This is a first-view structural schematic diagram of the mounting plate in this invention.

[0023] Figure 4 This is a second-view structural diagram of the mounting plate in this invention.

[0024] Figure 5 This is a cross-sectional view of the closed cylinder in this invention.

[0025] Figure 6 This is a schematic diagram of the lifting plate in this invention.

[0026] Figure 7 This is a cross-sectional view of the pull plate in this invention.

[0027] Figure 8 yes Figure 5 Enlarged diagram of point A in the middle.

[0028] In the diagram: 1. Base plate; 2. Housing; 3. Display screen; 4. Terminal block; 5. Mounting plate; 6. Top plate; 7. Enclosed cylinder; 8. Limiting post; 9. First protective cylinder; 10. Second protective cylinder; 11. Base plate; 12. First contact point; 13. First spring; 14. First support plate; 15. Second support plate; 16. Threaded rod; 17. Connecting groove; 18. Power rod; 19. Bracket; 20. Ball bearing; 21. Motor; 22. Shaft; 3. Support plate; 24. First limiting plate; 25. Second limiting plate; 26. Mounting column; 27. Third limiting plate; 28. Laser rangefinder sensor; 29. ​​Connecting plate; 30. Guide plate; 31. Third support plate; 32. Lifting frame; 33. Lifting plate; 34. Second contact point; 35. Servo module; 36. Pull plate; 37. Slot; 38. Fourth support plate; 39. Second spring; 40. Limiting block; 41. Pull wire; 42. Pressure plate. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1-8 As shown, the present invention is a fast miniaturized disconnecting switch for solid-state circuit breakers, including a base plate 1, a housing 2 fixedly mounted on the base plate 1, a display screen 3 fixedly mounted on the housing 2, a terminal block 4 fixedly mounted on the side of the housing 2, an mounting plate 5 fixedly mounted inside the housing 2, two sets of first springs 13 provided on the mounting plate 5, a base plate 11 fixedly connected to the end of the first spring 13, a first contact 12 fixedly mounted on the base plate 11, and the first contact 12 connected to the corresponding terminal block 4; A third support plate 31 is provided inside the housing 2. A lifting frame 32 is fixedly installed on the third support plate 31. A lifting plate 33 is slidably installed on the lifting frame 32. Two sets of second contacts 34 corresponding to the first contact 12 are fixedly installed on the lifting plate 33. A pressure sensor for detecting the contact pressure between the first contact 12 and the second contact 34 is provided on the lifting plate 33. The second contact 34 is connected to the corresponding terminal 4. A servo module 35 for driving the lifting plate 33 to move is provided on the third support plate 31.

[0031] In practical application, the housing 2 is fixedly mounted on the base plate 1 with fixing screws. When powered on, the servo module 35 drives the lifting plate 33 to move upward. The lifting plate 33 drives the second contact 34 to move upward until the second contact 34 contacts the corresponding first contact 12. Then, the lifting plate 33 continues to move upward, pushing the base plate 11 to move upward and compressing the first spring 13. The pressure applied by the compression of the first spring 13 to the contact between the first contact 12 and the second contact 34 ensures stable contact between the two. The pressure sensor detects the contact pressure between the first contact 12 and the second contact 34 to ensure stable contact between the first contact 12 and the second contact 34. When powered off, the lifting plate 33 moves in the opposite direction to separate the second contact 34 from the first contact 12. The linear movement of the lifting plate 33 realizes the contact and separation of the first contact 12 and the second contact 34, achieving rapid and stable adjustment of the position of the second contact 34. The power supply structure is simple, avoiding the jamming of the mechanism caused by dust adhesion and lubrication drying, ensuring smooth adjustment of the position of the second contact 34 and improving the stability of the equipment.

[0032] Please see Figures 3-5 , Figure 8 As shown, the present invention is a fast miniaturized disconnecting switch for solid-state circuit breakers. A second protective cylinder 10 is fixedly mounted on the base plate 11. The second protective cylinder 10 is slidably connected to a first protective cylinder 9 fixedly mounted on the mounting plate 5. The first protective cylinder 9 and the second protective cylinder 10 are coaxially arranged. A connecting plate 29 is fixedly mounted on the outer side of the second protective cylinder 10. A mounting post 26 penetrating the connecting plate 29 is fixedly mounted on the mounting plate 5. Two sets of third limiting plates 27 are fixedly mounted on the mounting post 26.

[0033] Specifically, a closed cylinder 7 is slidably mounted on the mounting plate 5. The closed cylinder 7 is coaxially arranged with the first protective cylinder 9 and is located inside the first protective cylinder 9. A top plate 6 is fixedly mounted on one end of the closed cylinder 7. A threaded rod 16 is threadedly connected to the top plate 6. The threaded rod 16 extends into the closed cylinder 7 and a second support plate 15 is fixedly mounted at the end of the threaded rod 16. A first support plate 14 is fixedly connected to the end of the first spring 13 away from the base plate 11. The first support plate 14 abuts against the second support plate 15. A limiting post 8 that is slidably connected to the top plate 6 is fixedly mounted on the mounting plate 5. A first limiting plate 24 that limits the position of the top plate 6 is provided inside the housing 2.

[0034] Specifically, a motor 21 is fixedly installed on the inner wall of the housing 2. The motor 21 drives the rotating shaft 22 to rotate. The rotating shaft 22 is located between the two sets of top plates 6. The first limiting plate 24 is fixedly installed on the rotating shaft 22.

[0035] In practical application, in the initial state, the first limiting plate 24 is located on the top plate 6, at which time the top plate 6 cannot move upward. The connecting plate 29 is in contact with the lower third limiting plate 27. At this time, the first spring 13 is in its original length state, and the first support plate 14 is in contact with the second support plate 15. When energized, the lifting plate 33 moves upward, causing the first contact 12 to abut against the second contact 34, and then pushes the base plate 11 upward. When the connecting plate 29 contacts the upper third limiting plate 27, it stops. Due to the restriction of the connecting plate 29 and the third limiting plate 27, the first contact 12 cannot continue to move upward. The initial compression deformation of the first spring 13 weakens the impact when the first contact 12 and the second contact 34 come into contact. After the position of the substrate 11 is fixed, the first contact 12 and the second contact 34 are in fixed contact, which improves the stability of the contact between the first contact 12 and the second contact 34 and ensures the stability of the circuit connection. The area of ​​the first spring 13 is enclosed by the top plate 6, the mounting plate 5, the enclosed cylinder 7, the first protective cylinder 9, the second protective cylinder 10, and the substrate 11, which prevents impurities from adhering to the first spring 13 and causing corrosion of the first spring 13, further improving the stability and service life of the equipment.

[0036] Please see Figures 3-5 , Figure 7 , Figure 8 As shown, the present invention is a fast miniaturized disconnecting switch for solid-state circuit breakers. Two sets of second limiting plates 25 are fixedly installed on the rotating shaft 22 to limit the position of the connecting plate 29. When the connecting plate 29 contacts the upper third limiting plate 27, the upper surface of the second limiting plate 25 is flush with the lower surface of the connecting plate 29.

[0037] Specifically, a bracket 19 is fixedly installed on the top plate 6, and a ball bearing 20 is rotatably installed on the bracket 19. The ball bearing 20 is used in conjunction with a support plate 23 fixedly installed on the rotating shaft 22. The surface of the support plate 23 that contacts the ball bearing 20 is set at an angle to the horizontal plane.

[0038] Specifically, a laser rangefinder 28 for detecting the distance between the mounting plate 5 and the upper surface of the connecting plate 29 is fixedly installed on the mounting plate 5.

[0039] Specifically, a connecting groove 17 is provided on the threaded rod 16. The cross-section of the connecting groove 17 is non-circular. A power rod 18 is slidably connected in the connecting groove 17. The power rod 18 is rotatably connected to the side wall of the housing 2 and extends out of the housing 2.

[0040] In practical application, during the upward movement of the substrate 11, the distance between the mounting plate 5 and the upper surface of the connecting plate 29 is detected by the laser range sensor 28. When the connecting plate 29 is detected to be close to the upper third limiting plate 27, the upward movement speed of the lifting plate 33 is slowed down, thereby reducing the impact of the connecting plate 29 contacting the third limiting plate 27. When the connecting plate 29 contacts the third limiting plate 27 but does not exert pressure on the third limiting plate 27, the reading of the pressure sensor is the reading of the first spring 13 under normal conditions, which is displayed on the display screen 3. Afterwards, the lifting plate 33 continues to move upwards, causing the connecting plate 29 to exert pressure on the third limiting plate 27. The increased pressure is the contact pressure of the first contact 12 and the second contact 34 under normal working conditions. Then, the motor 21 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the first limiting plate 24 to rotate, causing the first limiting plate 24 to detach from the top plate 6. At this time, under the action of the first spring 13, the top plate 6 and the closed cylinder 7 will move upwards, and the first spring 13 will return to its natural compression state. As the rotating shaft 22 continues to rotate, the second limiting plate 25 rotates to the bottom of the connecting plate 29. The first and second limiting plates 25 and the third limiting plate 27 are located on the upper and lower sides of the connecting plate 29, respectively. At this time, the position of the base plate 11 is completely fixed. When the lifting plate 34 moves downward, the base plate 11 and the first contact 12 cannot descend. The second contact 34 can instantly disengage from the first contact 12 to complete the power-off state, which improves the speed of power-off and the safety of equipment use. As the shaft 22 rotates, the support plate 23 comes into contact with the ball bearing 20. Since the upper surface of the support plate 23 is at an angle to the horizontal plane, as the shaft 22 rotates, the support plate 23 can push the top plate 6 upward through the ball bearing 20 until the first spring 13 returns to its original length. The support plate 23 supports the weight of the top plate 6 and the closed cylinder 7, so that the first spring 13 is in a state of no force. During the power-on period, the first spring 13 is in a state of no force. The third limiting plate 27 below supports the first spring 13 so that it is in a state of no force during the power-off period. The first spring 13 only buffers when the first contact 12 and the second contact 34 come into contact, which greatly reduces the time that the first spring 13 is subjected to force and effectively avoids the first spring 13 from being compressed and deformed by force for a long time, further improving the service life and stability of the equipment. During prolonged use, the first spring 13 undergoes compression deformation. Initially, the first support plate 14 and the second support plate 15 are not in contact. When the connecting plate 29 contacts the third limiting plate 27 but does not exert pressure on it, the reading of the pressure sensor will decrease compared to the reading under normal conditions. At this time, the power rod 18 is rotated, which drives the threaded rod 16 to rotate, causing the second support plate 15 to move downward until the reading of the pressure sensor returns to the normal reading. This achieves the adjustment of the end position of the first spring 13, enabling adaptive adjustment after the first spring 13 undergoes compression deformation, thus ensuring the stability of the equipment.

[0041] Please refer to Figure 7. The present invention is a fast miniaturized disconnecting switch for solid-state circuit breakers. Two sets of guide plates 30 are fixedly installed inside the housing 2. A third support plate 31 is slidably installed on the guide plates 30. A pull plate 36 extending out of the housing 2 is fixedly connected to the third support plate 31. A limiting block 40 for limiting the position of the pull plate 36 is provided on the housing 2.

[0042] Specifically, two sets of fourth support plates 38 located on both sides of the pull plate 36 are fixedly installed on the outer side of the housing 2. A second spring 39 is fixedly installed on the surface of the fourth support plate 38 near the pull plate 36. The second spring 39 is fixedly connected to the limiting block 40. A protrusion is provided on the side wall of the housing 2 for the limiting block 40 to slide on. A slot 37 is provided on the pull plate 36 for the limiting block 40 to extend into. A pressure plate 42 is slidably installed on the pull plate 36. Pull wires 41 are fixedly connected to both ends of the pressure plate 42. The pull wires 41 pass through the through holes on the fourth support plate 38 and the end of the pull wires 41 away from the pressure plate 42 is fixedly connected to the corresponding limiting block 40.

[0043] In practical application, when the servo module 35 malfunctions, the operator holds the lower end of the pull plate 36 and presses down the pressure plate 42. As the pressure plate 42 moves downward, it pulls the limit block 40 through the pull wire 41, causing the limit block 40 to be pulled out of the slot 37 and further compress the second spring 39. Then, the pull plate 36 can be moved downward. When the pull plate 36 moves downward, the third support plate 31 and its upper structure move downward as a whole, causing the second contact 34 to disconnect from the first contact 12. This realizes manual and rapid circuit disconnection in emergency situations, ensuring the safety of equipment use.

Claims

1. A fast miniaturized disconnecting switch for a solid-state circuit breaker, comprising a base plate (1), a housing (2) fixedly mounted on the base plate (1), a display screen (3) fixedly mounted on the housing (2), and terminals (4) fixedly mounted on the side of the housing (2), characterized in that, An installation plate (5) is fixedly installed inside the housing (2). Two sets of first springs (13) are provided on the installation plate (5). The ends of the first springs (13) are fixedly connected to a base plate (11). A first contact (12) is fixedly installed on the base plate (11). The first contact (12) is connected to the corresponding terminal (4). The housing (2) is provided with a third support plate (31), a lifting frame (32) is fixedly installed on the third support plate (31), a lifting plate (33) is slidably installed on the lifting frame (32), and two sets of second contacts (34) corresponding to the first contact (12) are fixedly installed on the lifting plate (33). The second contacts (34) are connected to the corresponding terminal (4). The third support plate (31) is provided with a servo module (35) that drives the lifting plate (33) to move.

2. A fast, miniaturized disconnecting switch for solid-state circuit breakers according to claim 1, characterized in that, A second protective cylinder (10) is fixedly installed on the substrate (11). The second protective cylinder (10) is slidably connected to the first protective cylinder (9) fixedly installed on the mounting plate (5). The first protective cylinder (9) and the second protective cylinder (10) are coaxially arranged. A connecting plate (29) is fixedly installed on the outer side of the second protective cylinder (10). A mounting post (26) penetrating the connecting plate (29) is fixedly installed on the mounting plate (5). Two sets of third limiting plates (27) are fixedly installed on the mounting post (26).

3. A fast, miniaturized disconnecting switch for solid-state circuit breakers according to claim 2, characterized in that, A closed cylinder (7) is slidably installed on the mounting plate (5). The closed cylinder (7) is coaxially arranged with the first protective cylinder (9) and the closed cylinder (7) is located inside the first protective cylinder (9). A top plate (6) is fixedly installed at one end of the closed cylinder (7). A threaded rod (16) is threadedly connected to the top plate (6). The threaded rod (16) extends into the closed cylinder (7) and a second support plate (15) is fixedly installed at the end of the threaded rod (16). A first support plate (14) is fixedly connected to the end of the first spring (13) away from the base plate (11). The first support plate (14) abuts against the second support plate (15). A limiting post (8) that is slidably connected to the top plate (6) is fixedly installed on the mounting plate (5). A first limiting plate (24) that limits the position of the top plate (6) is provided inside the housing (2).

4. A fast, miniaturized disconnecting switch for solid-state circuit breakers according to claim 3, characterized in that, A motor (21) is fixedly installed on the inner wall of the housing (2). The motor (21) drives the rotating shaft (22) to rotate. The rotating shaft (22) is located between the two sets of top plates (6). The first limiting plate (24) is fixedly installed on the rotating shaft (22).

5. A fast, miniaturized disconnecting switch for a solid-state circuit breaker according to claim 4, characterized in that, Two sets of second limiting plates (25) are fixedly installed on the rotating shaft (22) to limit the position of the connecting plate (29). When the connecting plate (29) contacts the upper third limiting plate (27), the upper surface of the second limiting plate (25) is flush with the lower surface of the connecting plate (29).

6. A fast, miniaturized disconnecting switch for a solid-state circuit breaker according to claim 5, characterized in that, A bracket (19) is fixedly installed on the top plate (6), and a ball bearing (20) is rotatably installed on the bracket (19). The ball bearing (20) is used in conjunction with a support plate (23) fixedly installed on a rotating shaft (22). The surface of the support plate (23) in contact with the ball bearing (20) is set at an angle to the horizontal plane.

7. A fast, miniaturized disconnecting switch for solid-state circuit breakers according to claim 2, characterized in that, A laser rangefinder (28) for detecting the distance between the mounting plate (5) and the upper surface of the connecting plate (29) is fixedly installed on the mounting plate (5).

8. A fast, miniaturized disconnecting switch for a solid-state circuit breaker according to claim 3, characterized in that, The threaded rod (16) has a connecting groove (17) with a non-circular cross section. A power rod (18) is slidably connected in the connecting groove (17). The power rod (18) is rotatably connected to the side wall of the housing (2) and extends out of the housing (2).

9. A fast, miniaturized disconnecting switch for a solid-state circuit breaker according to claim 1, characterized in that, Two sets of guide plates (30) are fixedly installed inside the housing (2). A third support plate (31) is slidably installed on the guide plate (30). A pull plate (36) extending out of the housing (2) is fixedly connected on the third support plate (31). A limiting block (40) for limiting the position of the pull plate (36) is provided on the housing (2).

10. A fast, miniaturized disconnecting switch for a solid-state circuit breaker according to claim 9, characterized in that, Two sets of fourth support plates (38) located on both sides of the pull plate (36) are fixedly installed on the outer side of the housing (2). A second spring (39) is fixedly installed on the surface of the fourth support plate (38) near the pull plate (36). The second spring (39) is fixedly connected to the limiting block (40). A protrusion for the limiting block (40) to slide on the side wall of the housing (2). A slot (37) for the limiting block (40) to extend into is opened on the pull plate (36). A pressure plate (42) is slidably installed on the pull plate (36). A pull wire (41) is fixedly connected to both ends of the pressure plate (42). The pull wire (41) passes through the through hole on the fourth support plate (38) and the end of the pull wire (41) away from the pressure plate (42) is fixedly connected to the corresponding limiting block (40).

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