Low-voltage permanent-magnet vacuum circuit breaker integrated frame

Abstract

The utility model relates to the field of power distribution system discloses a low pressure permanent -magnetic vacuum circuit breaker integral frame, including the shell body, be equipped with transmission main shaft in the shell body, transmission main shaft bottom has a plurality of fixed clamping blocks through bolt screw threads, and fixed clamping block is equipped with compression spring, and the top fixed connection of compression spring top end has wave plate, and the top fixed connection of wave plate top end has vacuum arc extinguishing integrated switch, and wave plate end fixed connection has long conducting rod, and transmission main shaft fixed connection has clamping plate, and the end of clamping plate rotatory connection has male plate, and male plate bottom end sets up permanent -magnetic operating mechanism. In the utility model, in the utility model, through shell body, auxiliary board, vacuum arc extinguishing integrated switch, transmission main shaft etc. Structure cooperation solves the low production efficiency and the device convenient to disassemble, reduces the difficulty of maintenance, solves the high temperature that the device appears in the use process and cannot be removed to cause the high cost of line heating burnout and the situation of low service life.

Description

Technical Field

[0001] This utility model relates to the field of power distribution systems, and in particular to an integral frame for a low-voltage permanent magnet vacuum circuit breaker. Background Technology

[0002] This device belongs to the field of low-voltage electrical technology and is mainly used in low-voltage power distribution systems (residential, commercial buildings, industrial plants), industrial explosion-proof scenarios (underground coal mines, chemical workshops), and smart grid terminals. It undertakes circuit on / off control, fault protection (overload, short circuit), and data interaction functions, and is one of the core devices of low-voltage power distribution networks. However, some existing low-voltage permanent magnet vacuum circuit breakers use an integral frame and typically employ an electromagnetic operating mechanism. Traditional frames are modular, spliced ​​structures, but the electromagnetic operating mechanism is not taken into account. This results in high energy consumption, the closing coil requires a continuous supply of large current (up to several kilowatts), reliance on expensive battery packs, high operating costs, and short lifespan. During closing, the coil is continuously energized, and fluctuations in operating conditions (such as unstable voltage) can easily cause it to overheat and burn out. The vacuum tube contacts have a long arcing time (≥50ms), accelerating contact burnout. The modular, spliced ​​structure results in scattered components, complex assembly processes (requiring multiple positioning and tightening), low efficiency in mass production, and difficulty in disassembly during maintenance (e.g., maintenance in coal mines requires several hours of downtime), severely impacting production continuity.

[0003] Therefore, an integral frame for a low-voltage permanent magnet vacuum circuit breaker is proposed to address the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an integral frame for a low-voltage permanent magnet vacuum circuit breaker, which aims to improve the problems of high temperature generated during the use of electromagnetic operating mechanisms in the prior art, which leads to device damage, additional costs, dispersed structure, and difficult maintenance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An integral frame for a low-voltage permanent magnet vacuum circuit breaker includes an outer shell. A drive shaft is housed within the outer shell. Several fixing blocks are threadedly connected to the bottom of the drive shaft via bolts. Each fixing block is equipped with a compression spring. A corrugated plate is fixedly connected to the top of each compression spring. A vacuum arc-extinguishing integrated switch is fixedly connected to the top of the corrugated plate. A long conductive rod is fixedly connected to the end of the corrugated plate. A clamping plate is fixedly connected to the drive shaft. A convex plate is rotatably connected to the end of the clamping plate. A permanent magnet operating mechanism is located at the bottom of the convex plate. A fixed disk is threadedly connected to the bottom of the permanent magnet operating mechanism via screws. A spring assembly is fixedly connected to the edge of the fixed disk. It also includes: a permanent magnet controller is provided inside the outer shell, a gasket is fixedly connected to the top of the permanent magnet controller, an energy storage power supply is fixedly connected to the gasket, and a U-shaped clamp is provided on the top of the energy storage power supply; As a further description of the above technical solution: A fixing plate is threadedly connected to the right end of the outer casing by several bolts, and the fixing plate is provided with several heat dissipation holes; As a further description of the above technical solution: The vacuum arc-extinguishing integrated switch and the long conductive rod penetrate the outer casing; As a further description of the above technical solution: The compression spring passes through the fixed clamping block and is fitted with circular washers at both ends of the fixed clamping block. A nut is threaded to the bottom end. As a further description of the above technical solution: A pair of support plates are fixedly connected to the bottom of the fixed plate, a connecting plate is fixedly connected between the support plates, a plurality of support bases are fixedly connected to the bottom of the support plates, and the support bases are fixedly connected to the bottom of the outer shell. As a further description of the above technical solution: The spring assembly includes a spring, one end of which is fixedly connected to a connecting plate, and the top end is threadedly connected to an auxiliary column. The auxiliary column is fixedly connected to a concave clamping column. The connecting plate is threadedly connected to a shaped fixing plate at one end, and the shaped fixing plate is threadedly connected to the bottom end of the outer shell by bolts. As a further description of the above technical solution: The clamping columns are rotatably connected by a rotating shaft, which passes through the clamping columns and is provided with an open fixing pin. As a further description of the above technical solution: The permanent magnet controller has a socket on its right end, which can be used with other structures. As a further description of the above technical solution: The outer shell is fixedly connected to several auxiliary plates, each auxiliary plate is fixedly connected to a handle, each auxiliary plate is fixedly connected to a limiting plate, and the limiting plate is rotatably connected to a transmission main shaft. As a further description of the above technical solution: The spring assembly is fixedly connected to a concave clamping column, the concave clamping column is rotatably connected to a pair of clamping columns, a torsion spring is sleeved between the clamping columns, the concave clamping column is rotatably connected to a manual turn-dividing push rod, the end of the transmission main shaft is connected to a curved panel by bolt thread, the curved panel is fixedly connected to a protective shell, and an auxiliary switch is provided inside the protective shell.

[0006] This utility model has the following beneficial effects: In this invention, the problem of fragmented traditional low-voltage permanent magnet vacuum circuit breakers is solved by the combination of the outer shell, auxiliary plate, vacuum arc-extinguishing integrated switch, and transmission main shaft. During use, the permanent magnet controller and energy storage power supply provide power, causing the double coils in the permanent magnet operating mechanism to generate electromagnetic force, which drives the structure in the permanent magnet operating mechanism to drive the transmission main shaft and make the whole structure rotate. This solves the problem of low production efficiency and makes the device easy to disassemble, reducing maintenance difficulty.

[0007] 2. In this utility model, the heat dissipation holes provided on the fixed plate structure solve the problem of high temperature during the use of the device, which can lead to the circuit overheating and burning, resulting in high cost and short service life. Attached Figure Description

[0008] Figure 1 This is a three-dimensional schematic diagram of an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 2 This is a schematic diagram of the structure of a vacuum arc-extinguishing integrated switch with an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 3 The present invention provides a compression spring for an integral frame of a low-voltage permanent magnet vacuum circuit breaker. Figure 4 This is a schematic diagram of the limiting plate of an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 5 This is a schematic diagram of the permanent magnet operating mechanism of an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 6 This is a schematic diagram of the energy storage power supply of an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 7 This is a schematic diagram of the handle structure of an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 8 This is a schematic diagram of the auxiliary switch of an integral frame for a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model. Figure 9 This is a schematic diagram of the corrugated plate structure of the integral frame of a low-voltage permanent magnet vacuum circuit breaker proposed in this utility model.

[0009] Legend: 1. Outer shell; 2. Fixing plate; 3. Auxiliary plate; 4. Vacuum arc-extinguishing integrated switch; 5. Handle; 6. Wave plate; 7. Transmission spindle; 8. Limiting plate; 9. Auxiliary switch; 10. Permanent magnet controller; 11. Energy storage power supply; 12. U-shaped clamping plate; 13. Permanent magnet operating mechanism; 14. Torsion spring; 15. Open fixing pin; 16. Clamping post; 17. Curved panel; 18. Compression spring; 19. Limiting plate; 20. Convex plate; 21. Fixing block; 22. Clamping plate; 23. Screw; 24. Spring; 25. Manual turn-dividing push rod; 26. Concave clamping post; 27. Washer; 28. Socket; 29. ​​Protective shell; 30. Long conductive rod; 31. Fixing plate. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0011] Reference Figures 1 to 9 One embodiment provided by this utility model: An integral frame for a low-voltage permanent magnet vacuum circuit breaker includes an outer shell 1, which protects and supports the structure. Several auxiliary plates 3 are fixedly connected to the outer shell 1 to prevent handles 5 from falling off. The handles 5 are used for lifting and transporting. Limiting discs 8 are fixedly connected to the auxiliary plates 3, assisting in fixing the auxiliary plates 3 and simultaneously driving a drive shaft 7 to rotate. The drive shaft 7 is rotatably connected to the limiting discs 8, connecting all structures to form a whole. Several fixing blocks 21 are bolted to the bottom of the drive shaft 7, assisting in fixing the structure to the drive shaft 7. Each fixing block 21 is equipped with a compression spring 18, which uses electromagnetic force to keep the drive shaft... 7. During movement, the compression spring 18 causes the vacuum arc-extinguishing integrated switch 4 and the long conductive rod 30 to slide up and down at the top of the outer casing 1. The compression spring 18 passes through the fixed clamping block 21 and has circular washers fitted at both ends of the fixed clamping block 21. The bottom end is threaded with a nut. A corrugated plate 6 is fixedly connected to the top of the compression spring 18. The corrugated plate 6 is used for flexible connection and conductivity. The vacuum arc-extinguishing integrated switch 4 is fixedly connected to the top of the corrugated plate 6. The vacuum arc-extinguishing integrated switch 4 is used to control the switch to start. A long conductive rod 30 is fixedly connected to the end of the corrugated plate 6. The long conductive rod 30 is used for wire conduction. A clamping plate 22 is fixedly connected to the transmission main shaft 7. The clamping plate 22 is used to connect the convex plate 20 and does not hinder the stability of the convex plate 20 and other structures when the transmission main shaft 7 moves. A convex plate 20 is rotatably connected to the end of the holding plate 22. The convex plate 20 is used to connect the permanent magnet operating mechanism 13. The permanent magnet operating mechanism 13 is set at the bottom end of the convex plate 20. The permanent magnet operating mechanism 13 emits electromagnetic force to drive other structures. The bottom end of the permanent magnet operating mechanism 13 is threadedly connected to a fixed plate 31 by screws 23. The fixed plate 31 is used to assist the permanent magnet operating mechanism 13 in stabilizing and connecting other structures. A spring assembly 24 is fixedly connected to the edge of the fixed plate 31. The spring assembly 24 is used to prevent the movement of the transmission main shaft 7 from hindering the stability of the permanent magnet operating mechanism 13. The spring assembly 24 includes a spring. One end of the spring is fixedly connected to a connecting plate, and the top end is threadedly connected to an auxiliary column. The auxiliary column is fixedly connected to a concave clamping column 26. The concave clamping column 26 is used to assist manual winding. The push rod 25 moves. One end of the connecting plate is fixedly connected to a shaped fixing plate via a threaded connection. The shaped fixing plate is bolted to the bottom of the outer casing 1. The spring assembly 24 is fixedly connected to a concave clamping post 26. The concave clamping post 26 is rotatably connected to a pair of clamping posts 16. The clamping posts 16 are provided to assist in structural stability. A rotating shaft is rotatably connected between the clamping posts 16. The rotating shaft passes through the clamping posts and is provided with an open fixing pin 15. The open fixing pin 15 is provided to maintain structural stability. A torsion spring 14 is sleeved between the clamping posts 16. The torsion spring 14 is provided for reset. The concave clamping post 26 is rotatably connected to a manual turn-dividing push rod 25. The manual turn-dividing push rod 25 can move back and forth. The end of the transmission main shaft 7 is bolted to a curved panel 17. The curved panel 17 is provided for connection structure.The curved panel 17 is fixedly connected to a protective shell 29, which is designed to prevent damage to the lock cylinder. An auxiliary switch 9 is located inside the protective shell 29 to assist in the operation of the mechanism. It also includes: a permanent magnet controller 10 is provided inside the outer casing 1, which controls the opening and closing operation mechanism; a gasket 27 is fixedly connected to the top of the permanent magnet controller 10, which isolates and fixes the heat generated by the energy storage power supply 11; the energy storage power supply 11 is fixedly connected to the gasket 27, which provides power; a U-shaped clamp 12 is provided on the top of the energy storage power supply 11, which is used to assist in fixing the energy storage power supply 11; and a socket 28 is provided on the right end of the permanent magnet controller 10, which is used to connect other devices. Reference Figure 1 and Figure 9 The right end of the outer shell 1 is connected to a fixing plate 2 by several bolts to provide auxiliary structural stability. The fixing plate 2 is provided with several heat dissipation holes to dissipate heat during the use of the device. A pair of support plates are fixedly connected to the bottom of the fixing plate to provide auxiliary structural stability. A connecting plate is fixedly connected between the support plates. Several support bases are fixedly connected to the bottom of the support plates and are fixedly connected to the bottom of the outer shell 1.

[0012] Working principle: When the device is running, the energy storage power supply 11 provides power, and the permanent magnet controller 10 sends a signal. When the double coil inside the permanent magnet operating structure 13 receives the signal, the internal coil is energized and pushes the internal lock core upward under the action of electromagnetic force. During the movement, it drives the transmission main shaft 7 to rotate. When the transmission main shaft 7 rotates, it drives the convex plate 20 fixedly connected to the transmission main shaft 7 to move. The convex plate 20 cooperates with the spring assembly to keep the permanent magnet operating mechanism 13 stable and is reset by the torsion spring 14 and the open fixing pin 15. During the process of the transmission main shaft 7 driving the fixed clamping block 21 to move, the fixed... The clamping block 21 squeezes the compression spring 18, causing the compression spring 18 to control the vacuum arc-extinguishing integrated switch 4 and the long conductive rod 30 to move up and down along the outer shell 1. The vacuum arc-extinguishing integrated switch 4 and the long conductive rod 30 are softly connected and conductive through the wave plate 6. The transmission main shaft 7 moves to make the protective shell (29) rotate. When it rotates to a certain angle, the auxiliary switch (9) senses and closes accordingly. When the turn-off signal is issued, the lock core inside the permanent magnet device mechanism 13 falls down to complete the turn-off. The heat generated by the device during use will be dissipated through several heat dissipation holes provided on the fixed plate 2, increasing the service life of the structure.

[0013] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integral frame for a low-voltage permanent magnet vacuum circuit breaker, comprising an outer shell (1), characterized in that: The outer casing (1) is provided with a transmission spindle (7). The bottom of the transmission spindle (7) is connected to several fixed clamping blocks (21) by bolts. The fixed clamping blocks (21) are provided with compression springs (18). The top of the compression springs (18) is fixedly connected to a wave plate (6). The top of the wave plate (6) is fixedly connected to a vacuum arc-extinguishing integrated switch (4). The end of the wave plate (6) is fixedly connected to a long conductive rod (30). The transmission spindle (7) is fixedly connected to a clamping plate (22). The end of the clamping plate (22) is rotatably connected to a convex plate (20). The bottom of the convex plate (20) is provided with a permanent magnet operating mechanism (13). The bottom of the permanent magnet operating mechanism (13) is threadedly connected to a fixed disk (31) by screws (23). The edge of the fixed disk (31) is fixedly connected to a spring assembly. It also includes: a permanent magnet controller (10) is provided inside the outer shell (1), a gasket (27) is fixedly connected to the top of the permanent magnet controller (10), an energy storage power supply (11) is fixedly connected to the gasket (27), and a U-shaped clamp (12) is provided on the top of the energy storage power supply (11).

2. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The right end of the outer shell (1) is connected to a fixing plate (2) by several bolts, and the fixing plate (2) is provided with several heat dissipation holes.

3. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The vacuum arc-extinguishing integrated switch (4) and the long conductive rod (30) penetrate the outer casing (1).

4. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The compression spring (18) passes through the fixed clamp (21) and is fitted with circular washers at both ends of the fixed clamp (21), with a nut threaded to the bottom end.

5. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The bottom of the fixed plate (31) is fixedly connected to a pair of support plates, and a connecting plate is fixedly connected between the support plates. Several support bases are fixedly connected to the bottom of the support plates, and the support bases are fixedly connected to the bottom of the outer shell (1).

6. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The spring assembly includes a spring (24), one end of which is fixedly connected to a connecting plate, and the top end is threadedly connected to an auxiliary column. The auxiliary column is fixedly connected to a concave clamping column (26). The connecting plate is threadedly connected to a non-circular fixing plate at one end, and the non-circular fixing plate is threadedly connected to the bottom end of the outer shell (1) by bolts.

7. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: A rotating shaft is rotatably connected between the clamping columns (16), and the rotating shaft passes through the clamping columns and is provided with an open fixing pin (15).

8. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The permanent magnet controller (10) has a socket (28) on its right end, which can be used in conjunction with other structures.

9. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The outer shell (1) is fixedly connected to several auxiliary plates (3), the auxiliary plates (3) are fixedly connected to a handle (5), the auxiliary plates (3) are fixedly connected to a limiting plate (8), and the limiting plate (8) is rotatably connected to a transmission main shaft (7).

10. The integral frame of a low-voltage permanent magnet vacuum circuit breaker according to claim 1, characterized in that: The spring assembly is fixedly connected to a concave clamping post (26), the concave clamping post (26) is rotatably connected to a pair of clamping posts (16), a torsion spring (14) is sleeved between the clamping posts (16), the concave clamping post (26) is rotatably connected to a manual turn-off push rod (25), the end of the transmission main shaft (7) is threadedly connected to a curved panel (17), the curved panel (17) is fixedly connected to a protective shell (29), and an auxiliary switch (9) is provided inside the protective shell (29).

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