CN111863518B

CN111863518B - Vacuum circuit breaker with transmission structure

Info

Publication number: CN111863518B
Application number: CN202010778057.XA
Authority: CN
Inventors: 彭康寿; 彭康玉
Original assignee: Guangdong Taigao Intelligent Electrical Equipment Co Ltd
Current assignee: Guangdong Taigao Intelligent Electrical Equipment Co Ltd
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-03-26
Anticipated expiration: 2040-08-05
Also published as: CN111863518A

Abstract

The invention belongs to the technical field of vacuum circuit breakers, and particularly relates to a vacuum circuit breaker with a transmission structure; comprises a shell, an arc extinguishing box and a movement mechanism; arc extinguishing boxes which are uniformly distributed are fixedly connected in the inner wall of the shell in the cavity of the shell, and the number of the arc extinguishing boxes is three; a first lead is fixedly connected above each arc extinguishing box and is electrically connected with a machine; a fixed contact is fixedly connected in each arc extinguishing box and is communicated with the first lead; a moving contact is connected below each static contact in the arc extinguishing box in a sliding manner; a movement mechanism is arranged on the right side of each first lead; the invention is mainly used for solving the problems that the existing breaker needs breaking time in the breaking process, if the breaker is not broken, the circuit and the machine can be burnt, and meanwhile, the existing breaker rebounds instantly in the breaking and closing processes to generate larger impact force, so that the breaker can be influenced and the service life of the breaker can be shortened.

Description

Vacuum circuit breaker with transmission structure

Technical Field

The invention belongs to the technical field of vacuum circuit breakers, and particularly relates to a vacuum circuit breaker with a transmission structure.

Background

The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum, has the advantages of small volume, light weight, suitability for frequent operation and no need of maintenance for arc extinguishing, and is popularized in power distribution networks. The vacuum circuit breaker is an indoor power distribution device in a 3-10kV and 50Hz three-phase alternating-current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and transformer substations, is particularly suitable for use places requiring no oil, less maintenance and frequent operation, can be arranged in a middle cabinet, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment, and can be introduced in the journal period: the Tan Jiaming, Chenling, Jiangchang, Yangxiejun, Wang Xiaohua, Rongming's, the development of the on-line monitoring device for the mechanical characteristics of the alternating-current medium-voltage vacuum circuit breaker, high-voltage electric appliance, 2020 (07), however, the vacuum circuit breaker still has certain problems at present, and the method specifically comprises the following aspects:

the break-make problem of circuit breaker mainly used electric current among the prior art, when the circuit current appears too big or the load is serious, current detector now carries the signal of telecommunication to the controller this moment in, then give the circuit breaker with the signal of telecommunication transmission through the controller, the circuit breaker just can the separating brake this moment, also can need certain time at the in-process that the circuit breaker opened brake simultaneously, can cause the burnout to circuit and machine in time if the circuit breaker separating brake is untimely, current circuit breaker is at the separating brake simultaneously, the in-process of combined floodgate is kick-backed in the twinkling of an eye, the impact force of production is great, thereby can lead to the fact the influence to the circuit breaker, reduce the life of circuit.

There are some proposals about vacuum circuit breaker in the prior art, such as patent No. 201810196113.1, the patent name is a patent of a novel high-voltage vacuum circuit breaker's drive arrangement, this technical scheme can directly control drive mechanism through actuating mechanism and be connected conducting mechanism with outage mechanism, forms an electric circulation, utilizes electromagnet to produce electromagnetic force to inhale armature through the electromagnetic force, but can't avoid the production of electric arc between the contact, and the structure is comparatively complicated simultaneously.

In view of the above, in order to overcome the above technical problems, the present inventors have designed and developed a vacuum circuit breaker with a transmission structure, which solves the above problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the vacuum circuit breaker with the transmission structure is mainly used for solving the problems that the existing circuit breaker needs opening time in the opening process, if the circuit breaker is not opened timely, a circuit and a machine can be burnt, meanwhile, the existing circuit breaker rebounds instantly in the opening and closing processes, the generated impact force is large, the circuit breaker can be influenced, and the service life of the circuit breaker is shortened.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a vacuum circuit breaker with a transmission structure, which comprises a shell, an arc extinguishing box and a movement mechanism, wherein the arc extinguishing box is arranged on the shell; arc extinguishing boxes which are uniformly distributed are fixedly connected in the inner wall of the shell in the cavity of the shell, and the number of the arc extinguishing boxes is three; a first lead is fixedly connected above each arc extinguishing box and is electrically connected with a machine; a fixed contact is fixedly connected in each arc extinguishing box and is communicated with the first lead; a moving contact is connected below each static contact in the arc extinguishing box in a sliding manner; a movement mechanism is arranged on the right side of each first lead; the motion mechanism comprises a current detector, and the first lead is communicated with the current detector through a second lead; the lower part of each current detector is fixedly connected with electromagnetic blocks which are uniformly distributed in the inner wall of the shell, and the number of the electromagnetic blocks is two; the two electromagnetic blocks are both in arc-shaped design, and the corresponding magnetic poles of the electromagnetic blocks are opposite; the upper side and the lower side of each electromagnetic block are fixedly connected with a power supply on the outer surface of each electromagnetic block, and the power supplies are electrically connected with the electromagnetic blocks; the opposite sides of the two electromagnetic blocks and the inner wall of the shell are provided with long magnetic blocks which are uniformly distributed, the number of the long magnetic blocks is two, and the long magnetic blocks are designed in an arc shape; the two long magnetic blocks have opposite magnetic poles to the electromagnetic blocks corresponding to each other; a spiral line is fixedly connected above the two long magnetic blocks and is communicated with an upper power supply; first long teeth which are uniformly arranged are fixedly connected in arc-shaped surfaces of the two sides of the long magnetic blocks, which are opposite to each other; the two long magnetic blocks are connected between the two electromagnetic blocks at the opposite sides through uniformly arranged rotating rods in a rotating mode, and uniformly arranged magnetic gears are meshed with the first long teeth; distance-shaped rods which are uniformly arranged are fixedly connected below the two long magnetic blocks, the number of the distance-shaped rods is three, and the distance-shaped rods are connected with a power supply below in a sliding manner; the left side of each distance rod is hinged with a feeler lever; the left side of each touch rod is fixedly connected with a first gear, and the first gear is rotatably connected with the shell through a rotating shaft; the left side of each first gear is rotatably connected with a second gear through a rotating shaft, and the second gears are meshed with the first gears; the left side of each second gear is fixedly connected with a long rod; a support rod is hinged in the inner wall of each long rod through a rotating shaft, and the other end of each support rod is fixedly connected with the moving contact;

when the breaker works, the breaker in the prior art is mainly used for the on-off problem of current, when the current is too large or the load is serious, the current detector transmits an electric signal into the controller, then the electric signal is transmitted to the breaker through the controller, the breaker can be opened at the moment, a certain time is needed in the opening process of the breaker, if the breaker is not opened timely, the circuit and the machine can be burnt, meanwhile, the current breaker rebounds instantly in the opening and closing processes, the generated impact force is large, the influence on the breaker can be further caused, the service life of the breaker can be reduced, the breaker manufactured by the invention detects the magnitude of the current through the current detector, when the current is too large, the power supply is electrified with the electromagnetic block and the long magnetic block at the first time, the magnetic gear can do magnetic induction line cutting motion between the long magnetic block and the electromagnetic block, when the breaker manufactured by the invention is used, because the current detector is communicated with the first lead, when the current is overlarge or the load is serious in the breaker, the upper power supply energizes the electromagnetic block, because the long magnetic block is fixedly connected with the power supply through a spiral line, the long magnetic block can be energized, after the long magnetic block and the electromagnetic block are energized, a magnetic field can be generated between the long magnetic block and the electromagnetic block, the uniformly arranged magnetic gears can be subjected to the influence of the magnetic field to perform cutting magnetic induction line motion between the long magnetic block and the electromagnetic block, because the magnetic blocks on the left side and the right side are opposite in magnetism to the long magnetic block, the right magnetic gear can be driven to rotate anticlockwise, and meanwhile, the left magnetic gear rotates clockwise, and because the magnetic gear is meshed with the first long gear, the long magnetic block can be driven to move downwards in the rotating process of the magnetic gear, the helical line is designed elastically so as not to influence the movement of the long magnetic block, the distance rod can be driven to move downwards in the downward movement process of the long magnetic block, the contact rod can be driven to rotate downwards in the downward movement process of the distance rod because the distance rod is hinged with the contact rod, the first gear can drive the second gear to rotate in the downward movement process of the contact rod, the long rod can be driven to move downwards in the rotation process of the second gear, the moving contact can be driven to slide downwards because the long rod is fixedly connected with the moving contact through the support rod, and the opening can be carried out in the first time in the process, so that the opening time can be reduced, accidents are avoided, meanwhile, the traditional mechanism utilizing the spring to store energy is abandoned, so that the impact force caused in the opening and closing processes of the circuit breaker can be prevented from being too large, thereby reduce the life of circuit breaker, when the circuit breaker need be closed a floodgate, the power of below this moment is to electromagnetism piece and long magnetic path circular telegram, and after long magnetic path and electromagnetism piece circular telegram, the equal antiport of magnetism gear that evenly arranges this moment to can drive long magnetic path and resume initial condition, the moving contact is laminated with the static contact simultaneously, accomplishes the combined floodgate.

Preferably, vertical plates are fixedly connected with the two sides of the movable contact in each arc extinguishing box; a first conveying belt is rotatably connected to the inner wall of each vertical plate through a rotating shaft and is made of an insulating material; a first stop block is fixedly connected to one side, opposite to each first conveying belt, of the outer surface of each first conveying belt; each moving contact sliding shaft is fixedly connected with second stop blocks which are uniformly arranged, and the second stop blocks are arranged on two sides of the first stop block; an arc-shaped layer is fixedly connected to one side, opposite to each first conveying belt, and the arc-shaped layers are made of insulating materials;

when the breaker works, the second stop block can be driven to move downwards in the process that the movable contact slides downwards due to the fact that the second stop block is arranged above the first stop block, the first stop block can be driven to move downwards in the process that the second stop block moves downwards, the first stop block can be driven to move downwards due to the fact that the first stop block is fixedly connected with the first conveying belt, the first conveying belt can be driven to rotate downwards in the process that the first stop block moves downwards, the arc-shaped layers are fixedly connected to the opposite sides of the first conveying belt, the arc-shaped layers can rotate to the position above the movable contact in the rotating process of the first conveying belt, electric arcs can be prevented from being generated between the movable contact and the static contact in the rotating process of the first conveying belt, and therefore the effect of breaking is influenced, the insulating effect of the breaker can be further improved due to the fact that the first conveying belt is made of insulating materials, therefore, the first conveying belt can be prevented from being electrified, and the safety of the circuit breaker is reduced.

Preferably, a cavity is formed in the inner wall of each arc-shaped layer; an air bag is fixedly connected to the outer surface of the first conveying belt below each first stop block, and nitrogen is filled in the air bag; each air bag is communicated with the cavity in the arc-shaped layer;

the during operation, because gasbag and the intraformational cavity intercommunication of arc, the in-process that moves down at first conveyer belt can drive the gasbag and remove, when the gasbag removes to the riser in, the riser can extrude the gasbag, gas in the gasbag can flow into the intraformational cavity of arc after the gasbag is extruded, when gas flows into the intraformational cavity of arc, the arc can take place the inflation, can further improve the insulating nature between moving contact and the static contact at this in-process, thereby prevent that moving contact and static contact from producing electric arc, because the gas in the gasbag is nitrogen gas, because nitrogen gas has better insulating effect, thereby can further improve the insulating degree between moving contact and the static contact.

Preferably, a second gear toothed belt is rotatably connected to the magnetic gear above the left side of each long magnetic block, and the second gear toothed belt is made of an insulating material; the other end of each second gear tooth belt extends into the electromagnetic block, and the other end of each second gear tooth belt partially extends out of the electromagnetic block; the left side of the second gear belt is rotatably connected with a first bevel gear in the inner wall of the shell through a rotating shaft; a second bevel gear is rotatably connected above each first bevel gear through a rotating shaft, and the second bevel gears are meshed with the first bevel gears; the left side of the second bevel gear is rotatably connected with a third gear in the inner wall of the arc extinguishing box; the connecting rod above the static contact comprises a screw rod and a spiral pipe, and the screw rod is connected with the spiral pipe through threads; the outer surface of each lead screw is fixedly connected with a second long tooth;

when in work, the left magnetic gear is fixedly connected with the second gear tooth belt, the second gear tooth belt is driven to rotate in the rotation process of the magnetic gear, and the second gear tooth belt is meshed with the first bevel gear, the first bevel gear can be driven to rotate in the process of rotating the second gear belt, and as the first bevel gear is meshed with the second bevel gear, in the process of rotating the first bevel gear, the second bevel gear can be driven to rotate, and as the third gear is meshed with the second bevel gear, the third gear can be driven to rotate in the rotating process of the second bevel gear, the screw rod can be driven to rotate due to the meshing of the third gear and the second long teeth, and the screw rod is meshed with the spiral pipe through threads, the fixed contact can be driven to rotate upwards in the rotating process of the screw rod, and the distance between the movable contact and the fixed contact can be increased in the process, so that electric arcs can be further prevented from being generated between the movable contact and the fixed contact.

Preferably, the outer surface of each spiral pipe is fixedly connected with uniformly arranged pull rods, and the pull rods are mutually corresponding; an insulating block is hinged in the inner wall of the arc extinguishing box through a rotating shaft at one side of each pull rod, which is opposite to the pull rod, and the insulating blocks rotate through springs; each pull rod is mutually attached to the insulating block in the initial state; a notch is formed in the inner wall of each insulating block;

when the breaker works, the outer surface of the spiral pipe is fixedly connected with the pull rods which are uniformly arranged, the pull rods can be separated from the insulating blocks in the upward moving process of the spiral pipe, when the pull rods are completely separated from the insulating blocks, the insulating blocks can rotate towards the direction of the static contact under the action of the springs until the insulating blocks are mutually attached to the static contact, the insulating effect on the static contact can be further improved in the process, and therefore the static contact and the moving contact are prevented from generating electric arcs.

Preferably, each support rod comprises an upper rod and a lower rod which are fixedly connected through a spring; a circular groove is formed in the inner wall of each upper rod; the upper surface of each lower rod is fixedly connected with a circular shaft, and the circular shafts are matched with the circular grooves; a pressure rod is connected in the inner wall of each round shaft in a sliding manner, and the pressure rod extends out of the shell; the right side of each compression bar is rotatably connected with a short rod through a rotating shaft; a through groove is formed in each circular shaft; chutes are formed in the left side and the right side of each through groove and penetrate through the upper rod; a conical rod is fixedly connected in the inner wall of the right side of the upper rod;

the during operation, when the unable normal separating brake of circuit breaker breaking down, outside pulling depression bar this moment, can drive the quarter butt and remove at the in-process of pulling depression bar, when the quarter butt removes to leading to the inslot with depression bar articulated department, because the upper boom links firmly through the spring with the lower beam, owing to receive the effect of spring, the upper boom can the downstream, the upper boom can promote depression bar and quarter butt and rotate to both sides this moment, can carry out the separating brake to the circuit breaker through manual mode at this in-process, thereby can prevent to can't lead to the fact the incident to the quick separating brake of circuit breaker when the circuit breaker breaks down, because the conical rod has been linked firmly in the upper boom right side inner wall, can extrude the stock at the in-process that the upper boom moved down, can drive the long magnet through the feeler lever and remove when the stock downwardly rotating, can drive the static contact upward movement through the second wheel cingulum after the long.

The invention has the following beneficial effects:

1. according to the breaker, the first conveying belt is arranged, the arc-shaped layer can rotate to the position above the moving contact in the rotating process of the first conveying belt, electric arcs can be prevented from being generated between the moving contact and the static contact in the process, and therefore the effect of breaking is influenced.

2. The invention can carry out switching-off in the first time by arranging the movement mechanism and matching the electromagnetic block, the long magnetic block and the magnetic gear, thereby reducing the switching-off time and avoiding causing accidents.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a body diagram of the present invention;

FIG. 2 is an internal structural view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an enlarged view of a portion of FIG. 3 at B;

FIG. 6 is an enlarged view of a portion of FIG. 3 at C;

in the figure: the device comprises a shell 1, a movement mechanism 11, a current detector 12, an electromagnetic block 13, a power supply 14, a long magnetic block 15, a spiral line 16, a first long tooth 17, a magnetic gear 18, a distance rod 19, a first gear 191, a second gear 192, an arc extinguishing box 2, a first lead wire 21, a static contact 22, a movable contact 23, a vertical plate 24, a first conveying belt 25, a first stop 26, a second stop 27, an arc layer 28, an air bag 29, a supporting rod 3, an upper rod 31, a lower rod 32, a pressure rod 33, a short rod 34, a through groove 35, a chute 36, a tapered rod 37, a second gear toothed belt 4, a first bevel gear 41, a second bevel gear 42, a third gear 43, a second long tooth 44, a lead screw 45, a spiral pipe 46 and an insulating block 47.

Detailed Description

A vacuum circuit breaker having a transmission structure according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.

As shown in fig. 1 to 6, the vacuum circuit breaker with a transmission structure according to the present invention comprises a housing 1, an arc extinguishing chamber 2 and a moving mechanism 11; arc extinguishing boxes 2 which are uniformly distributed are fixedly connected in the inner wall of the shell 1 in the cavity of the shell 1, and the number of the arc extinguishing boxes 2 is three; a first lead 21 is fixedly connected above each arc extinguishing box 2, and the first lead 21 is electrically connected with a machine; a fixed contact 22 is fixedly connected in each arc extinguishing box 2, and the fixed contact 22 is communicated with the first lead 21; a moving contact 23 is connected below each static contact 22 in the arc extinguishing chamber 2 in a sliding manner; a movement mechanism 11 is arranged on the right side of each first lead 21; the movement mechanism 11 comprises a current detector 12, and a first lead 21 is communicated with the current detector 12 through a second lead; electromagnetic blocks 13 which are uniformly arranged are fixedly connected in the inner wall of the shell 1 below each current detector 12, and the number of the electromagnetic blocks 13 is two; the two electromagnetic blocks 13 are both in arc-shaped design, and the corresponding magnetic poles of the electromagnetic blocks 13 are opposite; the upper side and the lower side of each of the two electromagnetic blocks 13 are fixedly connected with a power supply 14 on the outer surface of each of the two electromagnetic blocks 13, and the power supplies 14 are electrically connected with the electromagnetic blocks 13; the opposite sides of the two electromagnetic blocks 13 and the inner wall of the shell 1 are provided with long magnetic blocks 15 which are uniformly arranged, and the number of the long magnetic blocks 15 is two and is designed in an arc shape; the two long magnetic blocks 15 have opposite magnetic poles to the electromagnetic blocks 13 corresponding to each other; a spiral line 16 is fixedly connected above the two long magnetic blocks 15, and the spiral line 16 is communicated with an upper power supply 14; first long teeth 17 which are uniformly arranged are fixedly connected in arc-shaped surfaces of the two opposite sides of the long magnetic blocks 15; the opposite sides of the two long magnetic blocks 15 are rotatably connected between the two electromagnetic blocks 13 through uniformly arranged rotating rods with uniformly arranged magnetic gears 18, and the magnetic gears 18 are mutually meshed with the first long teeth 17; distance-shaped rods 19 which are uniformly arranged are fixedly connected below the two long magnetic blocks 15, and the number of the distance-shaped rods 19 is three and is in sliding connection with a lower power supply 14; the left side of each distance rod 19 is hinged with a feeler lever; the left side of each touch rod is fixedly connected with a first gear 191, and the first gear 191 is rotatably connected with the shell 1 through a rotating shaft; a second gear 192 is rotatably connected to the left side of each first gear 191 through a rotating shaft, and the second gear 192 is meshed with the first gear 191; the left side of each second gear 192 is fixedly connected with a long rod; a support rod 3 is hinged in the inner wall of each long rod through a rotating shaft, and the other end of the support rod 3 is fixedly connected with a moving contact 23;

when the breaker works, the breaker in the prior art is mainly used for the on-off problem of current, when the current is too large or the load is serious, the current detector 12 transmits an electric signal into the controller at the moment, then the electric signal is transmitted to the breaker through the controller, the breaker can be opened at the moment, a certain time is needed in the opening process of the breaker, if the breaker is not opened timely, the circuit and the machine can be burnt, meanwhile, the current breaker rebounds instantly in the opening and closing processes, the generated impact force is large, the breaker can be influenced, and the service life of the breaker is shortened. When the breaker manufactured by the invention is used, because the current detector 12 is communicated with the first lead 21, when the current in the breaker is overlarge or the load is serious, the upper power supply 14 supplies electricity to the electromagnetic block 13, because the long magnetic block 15 is fixedly connected with the power supply 14 through the spiral line 16, the long magnetic block 15 can be electrified, when the long magnetic block 15 is electrified with the electromagnetic block 13, a magnetic field can be generated between the long magnetic block 15 and the electromagnetic block 13, the uniformly arranged magnetic gear 18 can do cutting magnetic induction line motion between the long magnetic block 15 and the electromagnetic block 13 under the influence of the magnetic field, and because the electromagnetic blocks 13 at the left side and the right side are opposite in magnetism to the long magnetic block 15, the right side magnetic gear 18 can be driven to rotate anticlockwise, meanwhile, the left magnetic gear 18 rotates clockwise, the magnetic gear 18 is meshed with the first long tooth 17, the long magnetic block 15 can be driven to move downwards in the rotation process of the magnetic gear 18, the helical line 16 is designed elastically so as not to influence the movement of the long magnetic block 15, the distance rod 19 can be driven to move downwards in the downward movement process of the long magnetic block 15, the distance rod 19 is hinged with the contact rod, the contact rod can be driven to rotate downwards in the downward movement process of the distance rod 19, the first gear 191 can drive the second gear 192 to rotate in the downward movement process of the contact rod, the long rod can be driven to move downwards in the rotation process of the second gear 192, the long rod is fixedly connected with the movable contact 23 through the support rod 3 and can drive the movable contact 23 to slide downwards, and the brake can be switched off in the first time, so that the brake switching-off time can be reduced, and accidents can be avoided, meanwhile, the traditional mechanism utilizing a spring to store energy is abandoned, so that overlarge impact force caused in the switching-off and switching-on processes of the circuit breaker can be prevented, the service life of the circuit breaker is shortened, when the circuit breaker needs to be switched on, the lower power supply 14 conducts electricity to the electromagnetic block 13 and the long magnetic block 15, and after the long magnetic block 15 and the electromagnetic block 13 are conducted, the magnetic gears 18 uniformly arranged at the moment reversely rotate, so that the long magnetic block 15 can be driven to be restored to the initial state, and meanwhile, the movable contact 23 is attached to the fixed contact 22, and switching-on is completed.

As an embodiment of the present invention, a vertical plate 24 is fixedly connected to two sides of the movable contact 23 in each arc-extinguishing chamber 2; a first conveying belt 25 is rotatably connected to the inner wall of each vertical plate 24 through a rotating shaft, and the first conveying belt 25 is made of an insulating material; a first stop block 26 is fixedly connected with the outer surface of each first conveying belt 25 at one side opposite to each first conveying belt 25; each moving contact 23 sliding shaft is fixedly connected with a second stop block 27 which is uniformly arranged, and the second stop blocks 27 are arranged at two sides of the first stop block 26; an arc-shaped layer 28 is fixedly connected to one side, opposite to each first conveying belt 25, and the arc-shaped layer 28 is made of insulating materials;

when the circuit breaker works, the second stop block 27 is arranged above the first stop block 26, the second stop block 27 can be driven to move downwards in the process that the movable contact 23 slides downwards, the first stop block 26 can be driven to move downwards in the process that the second stop block 27 moves downwards, the first stop block 26 is fixedly connected with the first conveying belt 25, the first conveying belt 25 can be driven to rotate downwards in the process that the first stop block 26 moves downwards, the arc-shaped layers 28 are fixedly connected to the opposite sides of the first conveying belt 25, the arc-shaped layers 28 can rotate to the upper side of the movable contact 23 in the rotating process of the first conveying belt 25, electric arcs can be prevented from being generated between the movable contact 23 and the fixed contact 22 in the process, and therefore the effect of separating the circuit breaker is influenced, the insulation effect on the movable contact 23 can be further improved because the arc-shaped layers 28 are made of insulating materials, and therefore the effect of separating the circuit breaker is prevented from being influenced by the electric arcs generated between the movable contact 23, because the first conveyor belt 25 is made of an insulating material, the first conveyor belt 25 can be prevented from being electrified, and the safety of the circuit breaker is reduced.

As an embodiment of the present invention, a cavity is disposed in an inner wall of each of the arc-shaped layers 28; an air bag 29 is fixedly connected to the outer surface of the first conveying belt 25 below each first stop block 26, and nitrogen is filled in the air bag 29; each of the air pockets 29 communicates with a cavity in the arcuate layer 28;

during operation, because the air bag 29 is communicated with the cavity in the arc-shaped layer 28, the air bag 29 is driven to move in the downward movement process of the first conveying belt 25, when the air bag 29 moves into the vertical plate 24, the vertical plate 24 can extrude the air bag 29, when the air bag 29 is extruded, the gas in the air bag 29 can flow into the cavity in the arc-shaped layer 28, and when the gas flows into the cavity in the arc-shaped layer 28, the arc-shaped layer 28 can expand, in the process, the insulation between the movable contact 23 and the fixed contact 22 can be further improved, so that the movable contact 23 and the fixed contact 22 are prevented from generating electric arcs, because the gas in the air bag 29 is nitrogen, and because the nitrogen has a good insulation effect, the insulation degree between the movable contact 23 and the fixed contact 22 can be further improved.

As an embodiment of the present invention, a second cogged belt 4 is rotatably connected to the magnetic gear 18 above the left side of each long magnetic block 15, and the second cogged belt 4 is made of an insulating material; the other end of each second gear belt 4 extends into the electromagnetic block 13, and a part of the second gear belt extends out of the electromagnetic block 13; a first bevel gear 41 is rotatably connected in the inner wall of the shell 1 at the left side of the second gear belt 4 through a rotating shaft; a second bevel gear 42 is rotatably connected above each first bevel gear 41 through a rotating shaft, and the second bevel gears 42 are meshed with the first bevel gears 41; a third gear 43 is rotatably connected in the inner wall of the arc extinguishing box 2 at the left side of the second bevel gear 42; the connecting rod above the static contact 22 comprises a screw rod 45 and a spiral pipe 46, and the screw rod 45 is in threaded connection with the spiral pipe 46; the outer surface of each lead screw 45 is fixedly connected with a second long tooth 44;

when the magnetic gear 18 is in operation, the second gear belt 4 is fixedly connected to the left magnetic gear 18, the second gear belt 4 is driven to rotate in the rotation process of the magnetic gear 18, the first bevel gear 41 can be driven to rotate in the rotation process of the second gear belt 4 because the second gear belt 4 is meshed with the first bevel gear 41, the third gear 43 can be driven to rotate in the rotation process of the second bevel gear 42 because the first bevel gear 41 is meshed with the second bevel gear 42, the lead screw 45 can be driven to rotate because the third gear 43 is meshed with the second long tooth 44, the static contact 22 can be driven to rotate upwards in the rotation process of the lead screw 45 because the lead screw 45 is meshed with the spiral pipe 46 through threads, and the distance between the movable contact 23 and the static contact 22 can be increased in the process, so that the generation of electric arcs between the movable contact 23 and the stationary contact 22 can be further prevented.

As an embodiment of the present invention, the outer surface of each spiral tube 46 is fixedly connected with evenly arranged pull rods, and the pull rods correspond to each other; an insulating block 47 is hinged in the inner wall of the arc extinguishing box 2 through a rotating shaft at one side of each pull rod, which is opposite to the pull rod, and the insulating blocks 47 rotate through springs; each pull rod is mutually attached to the insulating block 47 in the initial state; a notch is formed in the inner wall of each insulating block 47;

when the breaker works, the outer surface of the spiral tube 46 is fixedly connected with the uniformly arranged pull rods, the pull rods can be separated from the insulating blocks 47 in the upward moving process of the spiral tube 46, when the pull rods are completely separated from the insulating blocks 47, the insulating blocks 47 can rotate towards the direction of the static contact 22 under the action of the springs until the pull rods are attached to the static contact 22, the insulating effect on the static contact 22 can be further improved in the process, and therefore the static contact 22 and the movable contact 23 are prevented from generating electric arcs.

As an embodiment of the present invention, each of the support rods 3 includes an upper rod 31 and a lower rod 32, and both the upper rod 31 and the lower rod 32 are fixedly connected by a spring; a circular groove is formed in the inner wall of each upper rod 31; the upper surface of each lower rod 32 is fixedly connected with a round shaft, and the round shaft is matched with the round groove; a pressure rod 33 is connected to the inner wall of each round shaft in a sliding manner, and the pressure rod 33 extends out of the shell 1; the right side of each compression bar 33 is rotatably connected with a short rod 34 through a rotating shaft; a through groove 35 is formed in each circular shaft; the left side and the right side of each through groove 35 are provided with inclined grooves 36, and the inclined grooves 36 penetrate through the upper rod 31; a tapered rod 37 is fixedly connected to the inner wall of the right side of the upper rod 31;

when the breaker fails and can not be normally opened in working, the pressure lever 33 is pulled outwards, the short rod 34 is driven to move in the process of pulling the pressing rod 33, when the hinged part of the short rod 34 and the pressing rod 33 moves into the through groove 35, since the upper rod 31 is fixed to the lower rod 32 by a spring, the upper rod 31 will move downwards under the action of the spring, at this time, the upper rod 31 will push the pressing rod 33 and the short rod 34 to rotate towards two sides, in the process, the breaker can be opened manually, so that the safety accident caused by the fact that the breaker cannot be opened quickly when the breaker breaks down can be prevented, because the tapered rod 37 is fixedly connected in the inner wall of the right side of the upper rod 31, the long rod is extruded when the upper rod 31 moves downwards, the long magnetic block 15 is driven to move through the touch rod when the long rod rotates downwards, when the long magnetic block 15 moves, the second cogged belt 4 drives the fixed contact 22 to move upwards.

The specific working process is as follows:

when the circuit breaker manufactured by the invention is used, because the current detector 12 is communicated with the first lead 21, when the current is overlarge or the load is serious in the circuit breaker, the upper power supply 14 supplies electricity to the electromagnetic block 13 at the moment, because the long magnetic block 15 is fixedly connected with the power supply 14 through the spiral line 16, the long magnetic block 15 can be electrified, when the long magnetic block 15 is electrified with the electromagnetic block 13, a magnetic field can be generated between the long magnetic block 15 and the electromagnetic block 13 at the moment, the uniformly arranged magnetic gears 18 can be subjected to the influence of the magnetic field to perform cutting magnetic induction line motion between the long magnetic block 15 and the electromagnetic block 13, because the electromagnetic blocks 13 on the left side and the right side are opposite in magnetism to the long magnetic block 15, the right side magnetic gear 18 can be driven to rotate anticlockwise, meanwhile, the left side magnetic gear 18 rotates clockwise, because the magnetic gear 18 is meshed with the first long tooth 17, the long magnetic block 15 can be driven to move downwards in the rotation process of the magnetic gear 18, because the helical line 16 is designed to be elastic, the movement of the long magnetic block 15 cannot be influenced, the long magnetic block 15 can be driven to move downwards in the process of moving downwards, the distance rod 19 is hinged with the feeler lever, the feeler lever can be driven to rotate downwards in the process of moving downwards from the distance rod 19, the first gear 191 can drive the second gear 192 to rotate in the process of rotating downwards of the feeler lever, the long rod can be driven to move downwards in the process of rotating the second gear 192, the moving contact 23 can be driven to slide downwards as the long rod is fixedly connected with the moving contact 23 through the support rod 3, the switching-off can be carried out in the first time in the process, when the breaker needs to be switched on, the power supply 14 below energizes the electromagnetic block 13 and the long magnetic block 15, and after the long magnetic block 15 and the electromagnetic block 13 are energized, the magnetic gears 18 which are uniformly arranged reversely rotate at the moment, so as to drive the long magnetic block 15 to return to the initial state, meanwhile, the movable contact 23 is attached to the fixed contact 22 to complete switching on, because the second gear belt 4 is fixedly connected to the left-side magnetic gear 18, the second gear belt 4 is driven to rotate in the rotation process of the magnetic gear 18, because the second gear belt 4 is meshed with the first bevel gear 41, the first bevel gear 41 can be driven to rotate in the rotation process of the second gear belt 4, because the first bevel gear 41 is meshed with the second bevel gear 42, the second bevel gear 42 can be driven to rotate in the rotation process of the first bevel gear 41, because the third gear 43 is meshed with the second bevel gear 42, the third gear 43 can be driven to rotate in the rotation process of the second bevel gear 42, because the third gear 43 is meshed with the second long gear 44, the lead screw 45 can be driven to rotate, because the lead screw 45 is meshed with the spiral pipe 46 through threads, the fixed contact 22 can be driven to rotate upwards in the rotation process of the lead screw 45, in this process, the distance between the movable contact 23 and the fixed contact 22 can be increased, so that the generation of an arc between the movable contact 23 and the fixed contact 22 can be further prevented.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A vacuum circuit breaker of transmission structure, its characterized in that: comprises a shell (1), an arc extinguishing box (2) and a movement mechanism (11); arc extinguishing boxes (2) which are uniformly distributed are fixedly connected in the inner wall of the shell (1) in the cavity of the shell (1), and the number of the arc extinguishing boxes (2) is three; a first lead (21) is fixedly connected above each arc extinguishing box (2), and the first lead (21) is electrically connected with a machine; a fixed contact (22) is fixedly connected in each arc extinguishing box (2), and the fixed contact (22) is communicated with the first lead (21); a moving contact (23) is connected below each static contact (22) in the arc extinguishing box (2) in a sliding manner; a movement mechanism (11) is arranged on the right side of each first lead (21); the movement mechanism (11) comprises a current detector (12), and a first lead (21) is communicated with the current detector (12) through a second lead; electromagnetic blocks (13) which are uniformly arranged are fixedly connected in the inner wall of the shell (1) below each current detector (12), and the number of the electromagnetic blocks (13) is two; the two electromagnetic blocks (13) are both in arc-shaped design, and the corresponding magnetic poles of the electromagnetic blocks (13) are opposite; the power supplies (14) are fixedly connected to the outer surfaces of the electromagnetic blocks (13) on the upper side and the lower side of the two electromagnetic blocks (13), and the power supplies (14) are electrically connected with the electromagnetic blocks (13); long magnetic blocks (15) are uniformly arranged on one opposite sides of the two electromagnetic blocks (13) and in the inner wall of the shell (1), and the number of the long magnetic blocks (15) is two and the long magnetic blocks are designed to be arc-shaped; the two long magnetic blocks (15) have opposite magnetic poles to the electromagnetic blocks (13) corresponding to each other; a spiral line (16) is fixedly connected above the two long magnetic blocks (15), and the spiral line (16) is communicated with an upper power supply (14); first long teeth (17) which are uniformly arranged are fixedly connected in arc-shaped surfaces of the two sides of the long magnetic blocks (15) which are opposite to each other; the two sides of the long magnetic blocks (15), which are opposite to each other, between the two electromagnetic blocks (13) are respectively and rotatably connected with magnetic gears (18) which are uniformly arranged through uniformly arranged rotating rods, and the magnetic gears (18) are mutually meshed with the first long teeth (17); distance-shaped rods (19) which are uniformly arranged are fixedly connected to the lower parts of the two long magnetic blocks (15), and the number of the distance-shaped rods (19) is three and is connected with a lower power supply (14) in a sliding manner; the left side of each distance rod (19) is hinged with a feeler lever; the left side of each touch rod is fixedly connected with a first gear (191), and the first gear (191) is rotatably connected with the shell (1) through a rotating shaft; a second gear (192) is rotatably connected to the left side of each first gear (191) through a rotating shaft, and the second gears (192) are meshed with the first gears (191); the left side of each second gear (192) is fixedly connected with a long rod; every all articulated bracing piece (3) through the pivot in the stock inner wall, and the bracing piece (3) other end links firmly with moving contact (23).

2. The vacuum circuit breaker of claim 1, wherein: vertical plates (24) are fixedly connected with the two sides of the movable contact (23) in each arc extinguishing box (2); a first conveying belt (25) is rotatably connected to the inner wall of each vertical plate (24) through a rotating shaft, and the first conveying belt (25) is made of an insulating material; a first stop block (26) is fixedly connected with the outer surface of each first conveying belt (25) at one side opposite to each first conveying belt (25); each moving contact (23) sliding shaft is fixedly connected with second stop blocks (27) which are uniformly arranged, and the second stop blocks (27) are arranged on two sides of the first stop block (26); every the relative one side of first conveyer belt (25) all links firmly curved layer (28), and curved layer (28) are insulating material and make.

3. The vacuum circuit breaker of claim 2, wherein: a cavity is formed in the inner wall of each arc-shaped layer (28); an air bag (29) is fixedly connected to the outer surface of the first conveying belt (25) below each first stop block (26), and nitrogen is filled in the air bag (29); each air bag (29) is communicated with a cavity in the arc-shaped layer (28).

4. The vacuum circuit breaker of claim 1, wherein: a second gear belt (4) is rotatably connected to the magnetic gear (18) above the left side of each long magnetic block (15), and the second gear belt (4) is made of an insulating material; the other end of each second gear belt (4) extends into the electromagnetic block (13), and part of the second gear belt extends out of the electromagnetic block (13); the left side of the second gear belt (4) is rotatably connected with a first bevel gear (41) in the inner wall of the shell (1) through a rotating shaft; a second bevel gear (42) is rotatably connected above each first bevel gear (41) through a rotating shaft, and the second bevel gears (42) are meshed with the first bevel gears (41); a third gear (43) is rotatably connected to the left side of the second bevel gear (42) in the inner wall of the arc extinguishing box (2); the connecting rod above the static contact (22) comprises a lead screw (45) and a spiral pipe (46), and the lead screw (45) is connected with the spiral pipe (46) through threads; the outer surface of each lead screw (45) is fixedly connected with a second long tooth (44).

5. The vacuum circuit breaker of claim 4, wherein: the outer surface of each spiral pipe (46) is fixedly connected with uniformly arranged pull rods, and the pull rods are mutually corresponding; an insulating block (47) is hinged in the inner wall of the arc extinguishing box (2) through a rotating shaft at one side of each pull rod, which is opposite to the other side, and the insulating blocks (47) rotate through springs; each pull rod is mutually attached to the insulating block (47) in the initial state; each insulation block (47) is internally provided with a notch.

6. The vacuum circuit breaker of claim 1, wherein: each support rod (3) comprises an upper rod (31) and a lower rod (32), and the upper rod (31) and the lower rod (32) are fixedly connected through springs; a circular groove is formed in the inner wall of each upper rod (31); the upper surface of each lower rod (32) is fixedly connected with a round shaft, and the round shafts are matched with the round grooves; a pressure rod (33) is connected to the inner wall of each round shaft in a sliding manner, and the pressure rod (33) extends out of the shell (1); the right side of each compression bar (33) is rotatably connected with a short rod (34) through a rotating shaft; a through groove (35) is formed in each circular shaft; chutes (36) are formed in the left side and the right side of each through groove (35), and the chutes (36) penetrate through the upper rod (31); a conical rod (37) is fixedly connected in the inner wall of the right side of the upper rod (31).