Circuit breaker with rapid arc extinguishing structure

Abstract

The invention relates to the technical field of arc extinguishing equipment, and discloses a circuit breaker with a rapid arc extinguishing structure, which comprises a mounting plate, the surface of the mounting plate is fixedly connected with a motor, the surface of the mounting plate is fixedly connected with a binding post, the surface of the mounting plate is fixedly connected with a U-shaped frame, and the end part of the binding post is fixedly connected with a main contact. By arranging the lifting mechanism, firstly, a motor is started to drive a two-way threaded rod to rotate, when the two-way threaded rod rotates, threaded rings can move in the direction close to each other, and when the threaded rings move, limiting elastic rods can be pushed to contract in the direction close to each other; when a limiting elastic rod retracts to a certain position, two threaded rings are limited, when the threaded rings move, a lifting rod is pushed to move upwards, when the lifting rod moves, a lifting plate is pushed to move upwards, when the lifting plate moves, an ejector rod is pushed to move upwards, and when the ejector rod moves, a sliding block is pushed to move upwards; when the sliding block moves, the lifting rod is pushed to move upwards.

Description

Technical Field

[0001] The present invention relates to the technical field of arc extinguishing equipment, in particular to a circuit breaker with a fast arc extinguishing structure. Background Art

[0002] A circuit breaker with a fast arc extinguishing structure is an electrical device used to quickly cut off the fault current in the circuit and effectively extinguish the arc when disconnecting the circuit. This type of circuit breaker is usually used in high-voltage power systems to protect power grids and equipment from short circuits and overloads.

[0003] In the prior art, when power is cut off, the main contacts and arc contacts on the high-voltage line need to be separated. The high-voltage line is generally installed in an open location and has a high altitude. Due to the strong wind at high altitudes, it is easy to blow up some plastic bags or waste paper and drop them on the ends of the main contacts and the arc contacts, resulting in the inability to separate the main contacts and the arc contacts. At this time, staff are required to clean them up, and there are certain safety hazards in the cleaning process. Summary of the invention

[0004] The object of the present invention is to provide a circuit breaker with a fast arc extinguishing structure to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a circuit breaker with a fast arc extinguishing structure, comprising a mounting plate, a motor is fixedly connected to the surface of the mounting plate, a terminal is fixedly connected to the surface of the mounting plate, a U-shaped frame is fixedly connected to the surface of the mounting plate, a main contact is fixedly connected to the end of the terminal, a connecting column is fixedly connected to the end of the terminal, and further comprising;

[0007] A lifting mechanism, the lifting mechanism comprising a lifting rod, the end of the lifting rod is rotatably connected to a lifting plate, and the surface of the lifting plate is fixedly connected to a push rod;

[0008] An arc extinguishing mechanism, the arc extinguishing mechanism comprising a slide plate, an arc extinguishing cover is slidably connected to the inner wall of the slide plate, and a pull rod is fixedly connected to the surface of the arc extinguishing cover;

[0009] The reinforcement mechanism comprises a telescopic elastic column, and a driven elastic plate is fixedly connected to the surface of the telescopic elastic column.

[0010] Furthermore, a mounting hole is provided on the surface of the mounting plate, and the number of the binding posts is set to six and divided into two groups of three each, and the six binding posts are symmetrically arranged on the surface of the mounting plate.

[0011] Furthermore, the lifting mechanism includes a bidirectional threaded rod, a surface of the bidirectional threaded rod is threadedly connected with a threaded ring, the surface of the threaded ring is fixedly connected with a limiting elastic rod, the end of the push rod away from the lifting plate is rotatably connected with a slider, the end of the connecting column away from the terminal is rotatably connected with a lifting rod, and the end of the lifting rod away from the connecting column is fixedly connected with an arc contact.

[0012] Furthermore, the end of the bidirectional threaded rod is fixedly connected to the output end of the motor, the end of the lifting rod away from the lifting plate is rotatably connected to the surface of the threaded ring, a sliding groove is provided at the bottom of the lifting rod, the inner wall of the sliding groove is slidably connected to the surface of the slider, and the surface of the arc contact is in contact with the surface of the main contact.

[0013] Furthermore, the arc extinguishing mechanism includes a driven plate, a surface of the driven plate is fixedly connected to a force-bearing spring plate, the surface of the force-bearing spring plate is rotatably connected to a force-bearing rod, the end of the force-bearing rod away from the force-bearing spring plate is rotatably connected to a lower pressure plate, the bottom of the lower pressure plate is fixedly connected to a bent telescopic plate, the bottom of the bent telescopic plate is fixedly connected to an elastic frame, and the surface of the elastic frame is fixedly connected to a pushing telescopic plate.

[0014] Furthermore, one end of the driven plate away from the force-bearing elastic plate is fixedly connected to the surface of the lifting plate, one end of the force-bearing elastic plate away from the driven plate is fixedly connected to the inner wall of the U-shaped frame, one end of the bent telescopic plate away from the lower pressure plate is fixedly connected to the surface of the slide plate, one end of the elastic frame away from the lower pressure plate is fixedly connected to the surface of the mounting plate, and one end of the pushing telescopic plate away from the elastic frame is fixedly connected to the bottom of the slide plate.

[0015] Furthermore, the reinforcement mechanism comprises a driven telescopic frame, an end of the driven telescopic frame is fixedly connected to a reinforcement ring, and a surface of the reinforcement ring is fixedly connected to a contraction plate.

[0016] Furthermore, one end of the driven telescopic frame away from the reinforcement ring is fixedly connected to the surface of the force-bearing elastic plate, both ends of the telescopic elastic column are fixedly connected to the surface of the driven telescopic frame, the surface of the driven elastic plate is fixedly connected to the surface of the reinforcement ring, and the number of the contraction plates is two, and the two contraction plates are symmetrically arranged with the reinforcement ring as the center.

[0017] The present invention has the following beneficial effects:

[0018] The present invention provides a lifting mechanism, firstly starts the motor to drive the two-way threaded rod to rotate, when the two-way threaded rod rotates, the threaded ring will move in the direction of approaching each other, when the threaded ring moves, it will push the limiting elastic rod to shrink in the direction of approaching each other, when the limiting elastic rod shrinks to a certain position, it will limit the two threaded rings, when the threaded ring moves, it will push the rising rod to move upward, when the rising rod moves, it will push the lifting plate to move upward, when the lifting plate moves, it will push the push rod to move upward, when the push rod moves, it will push the slider to move upward, when the slider moves, it will push the lifting rod to move upward, when the lifting rod moves, it will drive the arc contact to move upward, so that the arc contact is separated from the main contact, thereby achieving the effect of replacing manual power off and improving the efficiency of power off, when the lifting rod is in the process of moving, the end of the lifting rod connected to the arc contact is higher than the connecting column, the slider will rotate at the end of the push rod, and at this time the push rod will push the slider to slide on the inner wall of the sliding groove.

[0019] The present invention provides an arc extinguishing mechanism, when the lifting plate moves upward, it will drive the driven plate to move upward, when the driven plate moves, it will squeeze the force-bearing spring plate, when the force-bearing spring plate is squeezed, the middle part will bend, when the middle part of the force-bearing spring plate is bent, it will push the force-bearing rod to move downward, when the force-bearing rod moves, it will push the lower pressing plate to move downward, when the lower pressing plate moves, it will drive the bent telescopic plate to move downward, when the bent telescopic plate moves, it will drive the slide plate to move downward as a whole, when the slide plate moves, it will drive the arc extinguishing cover to move downward, when the arc extinguishing cover drops to the same position as the main contact, it will stop moving, when the slide plate moves downward, it will push the telescopic plate to retract downward, when the lower pressing plate moves downward, it will squeeze the elastic frame, when the elastic frame is squeezed When the pressure is applied, the middle part will bend, and when the middle part of the elastic frame bends, it will push the telescopic plate to move in the direction of the lifting plate, and when the telescopic plate is pushed to move, it will pull the slide plate to move in the direction of the main contact, and when the slide plate moves, it will pull the bent telescopic plate to extend in the direction of the main contact, and when the slide plate moves, it will push the arc extinguishing cover to move in the direction of the main contact, and when the arc extinguishing cover moves, the pulling force of the pull rod will make the arc extinguishing cover slide on the inner wall of the slide plate in the direction of approaching each other, and when the arc extinguishing cover slides, it will wrap the main contact, thereby quickly extinguishing the arc light generated when the main contact and the arc contact are separated, and the arc extinguishing cover can also be used to wrap the main contact to protect the main contact and prevent the scraped garbage bags or plastic from falling on the surface of the main contact.

[0020] The present invention provides a reinforcement mechanism, when the stressed elastic plate bends, it will drive the driven telescopic frame to move in the direction of approaching each other, when the driven telescopic frame moves, it will drive the reinforcement ring to move in the direction of approaching each other, when the reinforcement ring moves, it will push the contraction plate to contract in the direction of approaching each other, when the driven telescopic frame moves, it will push the telescopic elastic column to contract in the direction of approaching each other, when the telescopic elastic column contracts, it will squeeze the driven elastic plate, when the driven elastic plate is squeezed, the middle part will bend, when the middle part of the driven elastic plate is bent, it will push the reinforcement ring to move in the direction of the arc extinguishing hood, at this time, the reinforcement rings at both ends are just flush with the position of the arc extinguishing hood, when the middle reinforcement ring moves, it will drive the contraction plate to move in the direction of the arc extinguishing hood, when the arc extinguishing hood moves, it will drive the reinforcement rings at both ends to move in the direction of the arc extinguishing hood, at this time, the reinforcement ring will contact with the lower surface of the arc extinguishing hood, thereby reinforcing the arc extinguishing hood, and at the same time, the residual arc in the arc extinguishing hood can be dispersed.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the overall structure of the lifting mechanism of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the slider of the present invention;

[0027] Figure 5 It is a schematic diagram of the overall structure of the arc extinguishing mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of the elastic frame structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the overall structure of the reinforcement mechanism of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the telescopic elastic column of the present invention.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] In the figure: 1. mounting plate; 2. motor; 3. terminal; 4. U-shaped frame; 5. main contact; 6. connecting column; 10. lifting mechanism; 11. bidirectional threaded rod; 12. threaded ring; 13. limit elastic rod; 14. rising rod; 15. lifting plate; 16. push rod; 17. slider; 18. lifting rod; 19. arc contact; 30. arc extinguishing mechanism; 31. driven plate; 32. force spring plate; 33. force rod; 34. lower pressure plate; 35. bending telescopic plate; 36. slide plate; 37. arc extinguishing cover; 38. pull rod; 39. elastic frame; 40. push telescopic plate; 50. reinforcement mechanism; 51. driven telescopic frame; 52. reinforcement ring; 53. contraction plate; 54. telescopic elastic column; 55. driven elastic plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 8 As shown, the present invention is a circuit breaker with a fast arc extinguishing structure, comprising a mounting plate 1, a motor 2 is fixedly connected to the surface of the mounting plate 1, a terminal 3 is fixedly connected to the surface of the mounting plate 1, a U-shaped frame 4 is fixedly connected to the surface of the mounting plate 1, a main contact 5 is fixedly connected to the end of the terminal 3, a connecting column 6 is fixedly connected to the end of the terminal 3, and further comprising;

[0035] The lifting mechanism 10 includes a lifting rod 14. When the threaded ring 12 moves, the lifting rod 14 is pushed to move upward. The end of the lifting rod 14 is rotatably connected to a lifting plate 15. When the lifting rod 14 moves, the lifting plate 15 is pushed to move upward. A top rod 16 is fixedly connected to the surface of the lifting plate 15. When the lifting plate 15 moves, the top rod 16 is pushed to move upward.

[0036] The arc extinguishing mechanism 30 includes a chute plate 36. When the bending and telescopic plate 35 moves, the chute plate 36 is driven to move downward as a whole. The inner wall of the chute plate 36 is slidably connected with an arc extinguishing cover 37. When the chute plate 36 moves, the arc extinguishing cover 37 is driven to move downward. When the arc extinguishing cover 37 drops to the position flush with the main contact 5, it stops moving. A pull rod 38 is fixedly connected to the surface of the arc extinguishing cover 37. When the arc extinguishing cover 37 moves, the pulling force of the pull rod 38 causes the arc extinguishing cover 37 to move downward. The arc hood 37 slides on the inner wall of the chute plate 36 in the direction of approaching each other. When the arc extinguishing hood 37 slides, it will wrap the main contact 5, and quickly extinguish the arc light generated when the main contact 5 is separated from the arc contact 19. The arc extinguishing hood 37 can also wrap the main contact 5 to protect the main contact 5, preventing the scraped garbage bags or plastics from falling on the surface of the main contact 5. When the chute plate 36 moves, it will push the arc extinguishing hood 37 to move in the direction of the main contact 5;

[0037] The reinforcement mechanism 50 includes a telescopic elastic column 54. When the driven telescopic frame 51 moves, it will push the telescopic elastic column 54 to shrink in the direction of approaching each other. A driven elastic plate 55 is fixedly connected to the surface of the telescopic elastic column 54. When the telescopic elastic column 54 shrinks, it will squeeze the driven elastic plate 55. When the driven elastic plate 55 is squeezed, the middle part will bend.

[0038] The surface of the mounting plate 1 is provided with mounting holes. The number of the binding posts 3 is six and they are divided into two groups of three each. The six binding posts 3 are symmetrically arranged on the surface of the mounting plate 1 .

[0039] The lifting mechanism 10 includes a bidirectional threaded rod 11. First, the motor 2 is started to drive the bidirectional threaded rod 11 to rotate. The surface of the bidirectional threaded rod 11 is threadedly connected with a threaded ring 12. When the bidirectional threaded rod 11 rotates, the threaded ring 12 will move in a direction close to each other. The surface of the threaded ring 12 is fixedly connected with a limiting elastic rod 13. When the threaded ring 12 moves, it will push the limiting elastic rod 13 to shrink in a direction close to each other. When the limiting elastic rod 13 shrinks to a certain position, the two threaded rings 12 will be limited. The end of the push rod 16 away from the lifting plate 15 is rotatably connected to a slider 17, and the end of the connecting column 6 away from the terminal 3 is rotatably connected to a lifting rod 18. The end of the lifting rod 18 away from the connecting column 6 is fixedly connected to an arc contact 19. When the lifting rod 18 is in the process of moving, the end of the lifting rod 18 connected to the arc contact 19 is higher than the connecting column 6, the slider 17 will rotate at the end of the push rod 16, and at this time the push rod 16 will push the slider 17 to slide on the inner wall of the sliding groove.

[0040] The end of the bidirectional threaded rod 11 is fixedly connected to the output end of the motor 2, and the end of the rising rod 14 away from the lifting plate 15 is rotatably connected to the surface of the threaded ring 12. A sliding groove is provided at the bottom of the lifting rod 18. When the slider 17 moves, it will push the lifting rod 18 to move upward. The inner wall of the sliding groove is slidably connected to the surface of the slider 17. When the top rod 16 moves, it will push the slider 17 to move upward. The surface of the arc contact 19 contacts the surface of the main contact 5. When the lifting rod 18 moves, it will drive the arc contact 19 to move upward, so that the arc contact 19 is separated from the main contact 5, thereby achieving the effect of replacing manual power-off and improving the efficiency of power-off.

[0041] The arc extinguishing mechanism 30 includes a driven plate 31, and when the lifting plate 15 moves upward, the driven plate 31 will be driven to move upward. The surface of the driven plate 31 is fixedly connected with a force-bearing spring plate 32, and the surface of the force-bearing spring plate 32 is rotatably connected with a force-bearing rod 33, and when the middle part of the force-bearing spring plate 32 is bent, it will push the force-bearing rod 33 to move downward, and the force-bearing rod 33 is rotatably connected with a lower pressure plate 34 away from the end of the force-bearing spring plate 32. When the force-bearing rod 33 moves, it will push the lower pressure plate 34 to move downward. The bottom of the lower pressure plate 34 is fixedly connected with a bent telescopic plate 35, and when the lower pressure plate 34 moves, it will drive the bent telescopic plate 35 to move downward. The bottom of the bent telescopic plate 35 is fixedly connected with an elastic frame 39, and when the lower pressure plate 34 moves downward, the elastic frame 39 will be squeezed. When the elastic frame 39 is squeezed, the middle part will be bent, and the surface of the elastic frame 39 is fixedly connected with a pushing telescopic plate 40, and when the middle part of the elastic frame 39 is bent, it will push the pushing telescopic plate 40 to move in the direction of the lifting plate 15.

[0042] The end of the driven plate 31 away from the force-bearing spring plate 32 is fixedly connected to the surface of the lifting plate 15, and when the driven plate 31 moves, the force-bearing spring plate 32 will be squeezed. When the force-bearing spring plate 32 is squeezed, the middle part will bend, and the end of the force-bearing spring plate 32 away from the driven plate 31 is fixedly connected to the inner wall of the U-shaped frame 4, and the end of the bent telescopic plate 35 away from the lower pressure plate 34 is fixedly connected to the surface of the slide plate 36. When the slide plate 36 moves, the bent telescopic plate 35 will be pulled to extend in the direction of the main contact 5. When the push telescopic plate 40 moves, the slide plate 36 will be pulled to move in the direction of the main contact 5. The end of the elastic frame 39 away from the lower pressure plate 34 is fixedly connected to the surface of the mounting plate 1, and the end of the push telescopic plate 40 away from the elastic frame 39 is fixedly connected to the bottom of the slide plate 36. When the slide plate 36 moves downward, it pushes the telescopic plate 40 to retract downward.

[0043] The reinforcement mechanism 50 includes a driven telescopic frame 51. When the stressed elastic plate 32 bends, it will drive the driven telescopic frame 51 to move in a direction close to each other. When the driven telescopic frame 51 moves, it will drive the reinforcement ring 52 to move in a direction close to each other. The end of the driven telescopic frame 51 is fixedly connected with a reinforcement ring 52. When the middle part of the driven elastic plate 55 bends, it will push the reinforcement ring 52 to move in the direction of the arc extinguishing cover 37. At this time, the reinforcement rings 52 at both ends are just flush with the position of the arc extinguishing cover 37. The surface of the reinforcement ring 52 is fixedly connected with a contraction plate 53. When the middle reinforcement ring 52 moves, it will drive the contraction plate 53 to move in the direction of the arc extinguishing cover 37. When the reinforcement ring 52 moves, it will push the contraction plate 53 to contract in a direction close to each other. At this time, the reinforcement ring 52 will contact the lower surface of the arc extinguishing cover 37, thereby reinforcing the arc extinguishing cover 37 and dispersing the residual arc in the arc extinguishing cover 37.

[0044] One end of the driven telescopic frame 51 away from the reinforcement ring 52 is fixedly connected to the surface of the force-bearing elastic plate 32. When the arc extinguishing cover 37 moves, the reinforcement rings 52 at both ends will be driven to move toward the direction of the arc extinguishing cover 37. The two ends of the telescopic elastic column 54 are fixedly connected to the surface of the driven telescopic frame 51, and the surface of the driven elastic plate 55 is fixedly connected to the surface of the reinforcement ring 52. There are two contraction plates 53, and the two contraction plates 53 are symmetrically arranged with the reinforcement ring 52 as the center.

[0045] When in use, first start the motor 2 to drive the two-way threaded rod 11 to rotate. When the two-way threaded rod 11 rotates, the threaded ring 12 will move in the direction of approaching each other. When the threaded ring 12 moves, it will push the limiting elastic rod 13 to shrink in the direction of approaching each other. When the limiting elastic rod 13 shrinks to a certain position, the two threaded rings 12 will be limited. When the threaded ring 12 moves, it will push the rising rod 14 to move upward. When the rising rod 14 moves, it will push the lifting plate 15 to move upward. When the lifting plate 15 moves, it will push the push rod 16 to move upward. When the push rod 16 moves, it will push the slider 17 to move upward. When the slider 17 moves, it will push the lifting rod 18 to move upward. When the lifting rod 18 moves, it will drive the arc contact 19 to move upward, so that the arc contact 19 is separated from the main contact 5, thereby achieving the effect of replacing manual power off and improving the efficiency of power off. When the lifting rod 18 is in the process of moving.When the end of the lifting rod 18 connected to the arc contact 19 is higher than the connecting column 6, the slider 17 will rotate at the end of the push rod 16. At this time, the push rod 16 will push the slider 17 to slide on the inner wall of the sliding groove. When the lifting plate 15 moves upward, it will drive the driven plate 31 to move upward. When the driven plate 31 moves, it will squeeze the force-bearing spring plate 32. When the force-bearing spring plate 32 is squeezed, the middle part will bend. When the middle part of the force-bearing spring plate 32 is bent, it will push the force-bearing rod 33 to move downward. When the force-bearing rod 33 moves, it will push the lower pressure plate 34 to move downward. When the lower pressure plate 34 moves, it will drive the bent telescopic plate 35 to move downward. When the bent telescopic plate 35 moves, it will drive the slide plate 36 to move downward as a whole. When the slide plate 36 moves, it will drive the extinguishing The arc cover 37 moves downward, and when the arc extinguishing cover 37 drops to the same position as the main contact 5, it stops moving. When the slide plate 36 moves downward, it pushes the telescopic plate 40 to retract downward. When the lower pressure plate 34 moves downward, it squeezes the elastic frame 39. When the elastic frame 39 is squeezed, the middle part will bend. When the middle part of the elastic frame 39 is bent, it pushes the telescopic plate 40 to move in the direction of the lifting plate 15. When the telescopic plate 40 is pushed to move, the slide plate 36 will be pulled toward the main contact 5. When the slide plate 36 moves, it will pull the bent telescopic plate 35 to extend in the direction of the main contact 5. When the slide plate 36 moves, it will push the arc extinguishing cover 37 to move in the direction of the main contact 5. When the arc extinguishing cover 37 moves, it will pass The pulling force of the pull rod 38 causes the arc extinguishing cover 37 to slide on the inner wall of the slide groove plate 36 in the direction of approaching each other. When the arc extinguishing cover 37 slides, it will wrap the main contact 5, thereby quickly extinguishing the arc light generated when the main contact 5 is separated from the arc contact 19. The arc extinguishing cover 37 can also wrap the main contact 5 to protect the main contact 5 and prevent the scraped garbage bags or plastic from falling on the surface of the main contact 5. When the force-bearing spring plate 32 bends, it will drive the driven telescopic frame 51 to move in the direction of approaching each other. When the driven telescopic frame 51 moves, it will drive the reinforcement ring 52 to move in the direction of approaching each other. When the reinforcement ring 52 moves, it will push the contraction plate 53 to contract in the direction of approaching each other. When the driven telescopic frame 51 moves, it will push the extension ring 52 to move in the direction of approaching each other. The telescopic elastic column 54 contracts in the direction of approaching each other, and when the telescopic elastic column 54 contracts, it will squeeze the driven elastic plate 55. When the driven elastic plate 55 is squeezed, the middle part will bend. When the middle part of the driven elastic plate 55 bends, it will push the reinforcement ring 52 to move in the direction of the arc extinguishing cover 37. At this time, the reinforcement rings 52 at both ends are just flush with the position of the arc extinguishing cover 37. When the middle reinforcement ring 52 moves, it will drive the telescopic plate 53 to move in the direction of the arc extinguishing cover 37. When the arc extinguishing cover 37 moves, it will drive the reinforcement rings 52 at both ends to move in the direction of the arc extinguishing cover 37. At this time, the reinforcement ring 52 will come into contact with the lower surface of the arc extinguishing cover 37, thereby reinforcing the arc extinguishing cover 37 and dispersing the residual arc in the arc extinguishing cover 37.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circuit breaker with a fast arc extinguishing structure, comprising a mounting plate (1), a motor (2) being fixedly connected to the surface of the mounting plate (1), a terminal (3) being fixedly connected to the surface of the mounting plate (1), a U-shaped frame (4) being fixedly connected to the surface of the mounting plate (1), a main contact (5) being fixedly connected to the end of the terminal (3), and a connecting column (6) being fixedly connected to the end of the terminal (3), characterized in that: Also includes; A lifting mechanism (10), the lifting mechanism (10) comprising a lifting rod (14), the end of the lifting rod (14) being rotatably connected to a lifting plate (15), and the surface of the lifting plate (15) being fixedly connected to a top rod (16); An arc extinguishing mechanism (30), the arc extinguishing mechanism (30) comprising a slide plate (36), an inner wall of the slide plate (36) being slidably connected to an arc extinguishing cover (37), and a pull rod (38) being fixedly connected to a surface of the arc extinguishing cover (37); A reinforcement mechanism (50) comprising a telescopic elastic column (54), a driven elastic plate (55) being fixedly connected to the surface of the telescopic elastic column (54).

2. A circuit breaker with a fast arc extinguishing structure according to claim 1, characterized in that: The surface of the mounting plate (1) is provided with mounting holes, and the number of the terminal posts (3) is six and divided into two groups of three each, and the six terminal posts (3) are symmetrically arranged on the surface of the mounting plate (1).

3. A circuit breaker with a rapid arc extinguishing structure according to claim 2, characterized in that: The lifting mechanism (10) comprises a bidirectional threaded rod (11), the surface of the bidirectional threaded rod (11) is threadedly connected to a threaded ring (12), the surface of the threaded ring (12) is fixedly connected to a limiting elastic rod (13), the end of the push rod (16) away from the lifting plate (15) is rotatably connected to a slider (17), the end of the connecting column (6) away from the terminal (3) is rotatably connected to a lifting rod (18), and the end of the lifting rod (18) away from the connecting column (6) is fixedly connected to an arc contact (19).

4. A circuit breaker with a rapid arc extinguishing structure according to claim 3, characterized in that: The end of the bidirectional threaded rod (11) is fixedly connected to the output end of the motor (2), the end of the rising rod (14) away from the lifting plate (15) is rotatably connected to the surface of the threaded ring (12), a sliding groove is provided at the bottom of the lifting rod (18), the inner wall of the sliding groove is slidably connected to the surface of the slider (17), and the surface of the arc contact (19) is in contact with the surface of the main contact (5).

5. A circuit breaker with a rapid arc extinguishing structure according to claim 4, characterized in that: The arc extinguishing mechanism (30) comprises a driven plate (31), the surface of the driven plate (31) is fixedly connected to a force-bearing spring plate (32), the surface of the force-bearing spring plate (32) is rotatably connected to a force-bearing rod (33), one end of the force-bearing rod (33) away from the force-bearing spring plate (32) is rotatably connected to a lower pressure plate (34), the bottom of the lower pressure plate (34) is fixedly connected to a bending telescopic plate (35), the bottom of the bending telescopic plate (35) is fixedly connected to an elastic frame (39), and the surface of the elastic frame (39) is fixedly connected to a pushing telescopic plate (40).

6. A circuit breaker with a rapid arc extinguishing structure according to claim 5, characterized in that: One end of the driven plate (31) away from the force-bearing elastic plate (32) is fixedly connected to the surface of the lifting plate (15), one end of the force-bearing elastic plate (32) away from the driven plate (31) is fixedly connected to the inner wall of the U-shaped frame (4), one end of the bending telescopic plate (35) away from the lower pressure plate (34) is fixedly connected to the surface of the slide plate (36), one end of the elastic frame (39) away from the lower pressure plate (34) is fixedly connected to the surface of the mounting plate (1), and one end of the pushing telescopic plate (40) away from the elastic frame (39) is fixedly connected to the bottom of the slide plate (36).

7. A circuit breaker with a rapid arc extinguishing structure according to claim 6, characterized in that: The reinforcement mechanism (50) comprises a driven telescopic frame (51), the end of the driven telescopic frame (51) is fixedly connected to a reinforcement ring (52), and the surface of the reinforcement ring (52) is fixedly connected to a contraction plate (53).

8. A circuit breaker with a rapid arc extinguishing structure according to claim 7, characterized in that: One end of the driven telescopic frame (51) away from the reinforcement ring (52) is fixedly connected to the surface of the force-bearing elastic plate (32), both ends of the telescopic elastic column (54) are fixedly connected to the surface of the driven telescopic frame (51), the surface of the driven elastic plate (55) is fixedly connected to the surface of the reinforcement ring (52), and the number of the contraction plates (53) is two, and the two contraction plates (53) are symmetrically arranged with the reinforcement ring (52) as the center.

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