CN112614760A

CN112614760A - Circuit breaker protection device for preventing wire from fusing due to overload

Info

Publication number: CN112614760A
Application number: CN202011605440.1A
Authority: CN
Inventors: 陈利莹
Original assignee: Nanjing Icaxu E Commerce Co ltd
Current assignee: Nanjing Icaxu E Commerce Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-06

Abstract

The invention discloses a breaker protection device for preventing a wire from being fused due to overload, which comprises a protection device, a motor cavity and a pushing cavity are arranged in the protection device, the right end wall of the motor cavity is communicated with the left end wall of the pushing cavity, the invention is mainly applied to the protection of electrical overload in daily life, whether the current is overloaded or not can be reflected in real time through the expansion with heat and the contraction with cold of the expansion block in the protection process, further judging whether the power-off processing is needed or not, the energizing block can be separated from the contact with the main wiring and the auxiliary wiring by the pushing mechanism and the cutting mechanism, thereby achieving the purpose of power failure, and simultaneously achieving the purpose of using the main abutting block to ensure that in emergency, the purpose of cutting off the current ensures that the current can be cut off accurately in time, thereby avoiding subsequent accidents such as fire and the like.

Description

Circuit breaker protection device for preventing wire from fusing due to overload

Technical Field

The invention relates to the related field of circuit breakers, in particular to a circuit breaker protection device for avoiding fusing caused by overload of a wire.

Background

The invention discloses a circuit breaker protection device for preventing a wire from being fused due to overload, which solves the problems that the current circuit breaker needs to be reset and can be restored by manual pushing because the flow is greater than the bearing capacity in a short time, a large amount of heat can be generated, the wire is easy to fuse, accidents such as fire and the like can be caused, and the damage to the safety and property of people can be easily caused.

Disclosure of Invention

The invention discloses a circuit breaker protection device for preventing electric wire overload from causing fusing, which comprises a protection device, wherein the protection device is internally provided with a motor cavity and a push cavity, the right end wall of the motor cavity is communicated with the left end wall of the push cavity, a heated base is fixedly arranged between the left end wall and the right end wall of the motor cavity, the heated base is internally provided with two abutting cavities which are bilaterally symmetrical by taking the heated base as a symmetrical center, one end wall of the two abutting cavities which are mutually close is communicated with a sliding cavity respectively, one end wall of the sliding cavity which is mutually close is communicated with a heated cavity, the abutting cavity and the heated cavity are internally provided with a pushing mechanism, the pushing mechanism comprises a pushed block which slides up and down in the heated cavity, the left end and the right end of the pushed block respectively extend into the abutting cavities, the two pushed blocks are provided with expansion blocks in a butt joint on one end face close to each other, a sliding rod is fixedly arranged on one end face far away from each other of the pushed blocks, limiting cavities are respectively arranged in the upper end wall and the lower end wall of the heated cavity and communicated with the motor cavity, the sliding rod slides up and down between the left end wall and the right end wall of the limiting cavity, reset springs are wound on the periphery of the sliding rod, one ends, close to each other, of the two reset springs are fixedly connected to one end face far away from each other of the pushed blocks, one ends, far away from each other, of the reset springs are fixedly connected to the upper end wall and the lower end wall of the heated cavity respectively, an active rack is fixedly arranged on the right end face of the pushed block, the front end face and the rear end face of the active rack are respectively in butt joint on the front end wall and the rear end wall of the butt joint cavity on the right side and move up and down between the front end wall and the rear, the driving rack slides up and down between the left end wall and the right end wall of the telescopic cavity, the driving rack can extend into the motor cavity, two rotating cavities are communicated between the right end wall of the butt cavity and the left end wall of the pushing cavity on the right side, a cut-off mechanism is arranged in the rotating cavities and the pushing cavity, the cut-off mechanism comprises a gear shaft fixedly arranged between the front end wall and the rear end wall of the rotating cavity, a transmission gear is rotatably connected to the periphery of the gear shaft, the transmission gear rotates in the rotating cavity, the left end surface of the transmission gear is meshed with the right end surface of the driving rack, a driven rack is meshed with the right end surface of the transmission gear, the front end surface and the rear end surface of the driven rack are abutted against the front end wall and the rear end wall of the pushing cavity and slide up and down between the front end wall and the rear end wall of the pushing cavity, and a driving, the driving block slides up and down between the front end wall and the rear end wall of the pushing cavity.

Preferably, a wire casing is fixedly arranged in the motor cavity and the push cavity, a wire cavity which is through from left to right is arranged in the wire casing, the middle section of the heated base is matched with the wire casing, two pairs of fixing shafts which are symmetrical from left to right with the push cavity as a symmetrical center are fixedly arranged between the front end wall and the rear end wall of the push cavity, tensioning wheels are rotatably connected to the periphery of the fixing shafts, a pulling belt is connected to one end surface, far away from each other, of the upper pair of tensioning wheels, a left end of the pulling belt is fixedly connected to one end surface, far away from each other, of the two driving blocks, a driven block is fixedly arranged at the right end of the pulling belt, a fixed block is fixedly arranged between the front end wall and the rear end wall of the push cavity, one end surface, close to each other, of the two fixed blocks is fixedly arranged on the upper end surface and, the driven piece along slide from top to bottom in the guide sliding groove, the right-hand member face butt of driven piece is in on the right-hand member wall in promotion chamber and the right-hand member wall in promotion chamber slides from top to bottom, the sliding block has set firmly on the terminal surface that the driven piece is close to each other, promote the chamber with be equipped with respectively that is linked together between the upper and lower end wall in electric wire chamber and push the chamber, the sliding block is in it slides from top to bottom just to push from top to bottom between the left and right sides end wall in chamber the one end that the sliding block is close to each other stretches into in the electric wire.

Preferably, the upper end wall and the lower end wall of the motor cavity are fixedly provided with a large motor respectively, the left end surface of the large motor is abutted against the left end wall of the motor cavity, one end surface of each large motor, which is close to each other, is provided with a screw rod in a power connection manner, one end of each screw rod, which is close to each other, extends into the abutting cavity at the left side, one section of each screw rod, which is close to each other, is provided with a main abutting block in a threaded connection manner, the main abutting block slides up and down between the left end wall and the right end wall of the abutting cavity at the left side, one end surface, which is far away from each main abutting block, is abutted against one end surface, which is close to each other, of the two pushed blocks, the right end surface of the large motor is provided with a motor shaft in a power connection manner, the right end of the motor shaft is rotatably connected into the, the driving bevel gear is characterized in that a driven bevel gear is respectively arranged at the lower section of one end face, far away from each other, of the driving bevel gear in a meshed mode, a fan shaft is fixedly arranged in the driven bevel gear, a moving cavity is respectively arranged between the upper end wall and the lower end wall of the butt joint cavity and the motor cavity in a communicated mode, the fan shaft rotates between the left end wall and the right end wall of the moving cavity and slides up and down between the left end wall and the right end wall of the moving cavity, the upper end and the lower end of one end, close to each other, of the fan shaft extend into the butt joint cavity, the upper end face and the lower end of the other end face, close to each other, of the fan shaft are respectively provided with rotating blocks in a rotating connection mode, and one end face.

Preferably, two communicating holes are respectively formed in one end wall, away from each other, of the abutting cavity and communicated with the wire cavity, auxiliary connecting wires are fixedly arranged in the upper end wall and the lower end wall of each communicating hole and are connected with the expansion blocks, and the left end faces of the two auxiliary connecting wires extend out of the outside.

Preferably, two one section internal fixation that the sliding block is close to each other has the circular telegram piece, the right-hand member face butt of vice wiring is in on the circular telegram piece and slide from top to bottom on the left end face of sliding block, the butt is equipped with main wiring on the right-hand member face of circular telegram piece, main wiring is in the right-hand member face of sliding block slides from top to bottom, the right-hand member of main wiring stretches into the external world.

The invention has the beneficial effects that: the invention is mainly applied to the protection of electrical overload in daily life, can reflect whether the current is overloaded or not in real time through the expansion and contraction of the expansion block in the protection process, and further judges whether the power-off treatment is needed or not, and can enable the electrifying block to be separated from the butting with the main wiring and the auxiliary wiring through the pushing mechanism and the cutting-off mechanism, so that the purpose of power-off is achieved, and meanwhile, the purpose of cutting off the current under emergency is achieved by using the main butting block, so that the current can be ensured to be cut off timely and accurately, and further, the following accidents such as fire and the like can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of a circuit breaker protection device for preventing a wire from being blown due to overload according to the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is an enlarged schematic view of C in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The circuit breaker protection equipment for preventing the wire from being fused due to overload comprises a protection device 11, wherein a motor cavity 13 and a push cavity 29 are arranged in the protection device 11, the right end wall of the motor cavity 13 is communicated with the left end wall of the push cavity 29, a heated base 15 is fixedly arranged between the left end wall and the right end wall of the motor cavity 13, two abutting cavities 16 which are bilaterally symmetrical by taking the heated base 15 as a symmetrical center are arranged in the heated base 15, one end walls, close to each other, of the two abutting cavities 16 are communicated with each other and respectively provided with a sliding cavity 17, one end wall, close to each other, of the sliding cavity 17 is communicated with a heated cavity 18, pushing mechanisms 101 are arranged in the abutting cavities 16 and the heated cavity 18, each pushing mechanism 101 comprises a pushed block 47 which slides up and down in the heated cavity 18, and the left end and the right end of each pushed block 47 respectively extend into the abutting cavities 16, the two pushed blocks 47 are provided with expansion blocks 19 in a butt joint on one end face close to each other, the pushed blocks 47 are provided with sliding rods 42 in a butt joint on one end face far away from each other, the upper and lower end walls of the heated cavity 18 are respectively provided with a limit cavity 41 communicated with the motor cavity 13, the sliding rods 42 slide up and down between the left and right end walls of the limit cavity 41, the periphery of the sliding rods 42 is provided with reset springs 43 in a winding manner, one ends of the two reset springs 43 close to each other are fixedly connected to one end face far away from each other of the pushed blocks 47, one ends of the reset springs 43 far away from each other are respectively fixedly connected to the upper and lower end walls of the heated cavity 18, the right end face of the pushed block 47 is provided with an active rack 45 in a butt joint on the right side between the front and rear end walls of the butt joint cavity 16 and move up and down between the front and rear end walls of the butt joint cavity 16, the upper end wall and the lower end wall of the right abutting cavity 16 are communicated with the motor cavity 13 and are respectively provided with a telescopic cavity 54, the driving rack 45 slides up and down between the left end wall and the right end wall of the telescopic cavity 54, the driving rack 45 can extend into the motor cavity 13, the right end wall of the right abutting cavity 16 is communicated with the left end wall of the pushing cavity 29 and is provided with two rotating cavities 52, the rotating cavities 52 and the pushing cavity 29 are internally provided with a cutting mechanism 102, the cutting mechanism 102 comprises a gear shaft 51 fixedly arranged between the front end wall and the rear end wall of the rotating cavity 52, the periphery of the gear shaft 51 is rotatably connected with a transmission gear 46, the transmission gear 46 rotates in the rotating cavity 52, the left end surface of the transmission gear 46 is meshed with the right end surface of the driving rack 45, and the right end surface of the transmission gear 46 is meshed with a driven rack 53, the front end face and the rear end face of the driven rack 53 abut against the front end wall and the rear end wall of the pushing cavity 29 and slide up and down between the front end wall and the rear end wall of the pushing cavity 29, the driving block 25 is fixedly arranged on the right end face of the driven rack 53, the driving block 25 slides up and down between the front end wall and the rear end wall of the pushing cavity 29, when the electric wire is overloaded, the temperature in the heated cavity 18 is suddenly increased due to the sealing in the heated cavity 18, and the expansion block 19 expands due to the good thermal expansion performance of the expansion block 19 and is limited by the heated cavity 18, so that the upper end and the lower end of the expansion block 19 are continuously stretched, the pushed block 47 is driven to move, the sliding rod 42 is driven to slide in the limiting cavity 41, the return spring 43 is continuously compressed, the driving rack 45 is driven to move, the transmission gear 46 is driven to rotate around the gear shaft 51, and the driven rack 53 is driven to, thereby achieving the purpose of driving the driving block 25 to move.

Beneficially, a wire housing 21 is fixedly arranged in the motor cavity 13 and the push cavity 29, a wire cavity 20 penetrating left and right is arranged in the wire housing 21, the middle section of the heated base 15 is matched with the wire housing 21, two pairs of fixed shafts 27 symmetrical left and right with the push cavity 29 as a symmetry center are fixedly arranged between the front and rear end walls of the push cavity 29, a tension pulley 28 is rotatably connected to the periphery of the fixed shaft 27, a pulling belt 26 is connected to one end surface of the upper and lower pairs of tension pulleys 28 far away from each other, the left end of the pulling belt 26 is fixedly connected to one end surface of the two driving blocks 25 far away from each other, a driven block 33 is fixedly arranged at the right end of the pulling belt 26, a fixed block 31 is fixedly arranged between the front and rear end walls of the push cavity 29, one end surface of the two fixed blocks 31 close to each other is fixedly arranged on the upper and lower end surfaces of the wire, a guide chute 32 with a right opening is arranged in the right end face of the fixed block 31, the driven block 33 slides up and down along the guide chute 32, the right end face of the driven piece 33 abuts on the right end wall of the push chamber 29 and slides up and down on the right end wall of the push chamber 29, a sliding block 34 is fixedly arranged on one end surface of the driven block 33 which is close to each other, a pushed cavity 49 is respectively arranged between the push cavity 29 and the upper end wall and the lower end wall of the wire cavity 20, the sliding blocks 34 slide up and down between the left and right end walls of the pushed cavity 49 and the ends of the sliding blocks 34 that are close to each other protrude into the wire cavity 20, and when the active block 25 moves, thereby driving the pulling belt 26 to move, further driving the tension pulley 28 to rotate around the fixed shaft 27, and then the driven block 33 is driven to slide in the guide chute 32, and then the two sliding blocks 34 are driven to move away from each other, thereby achieving the purpose of automatic power off.

Beneficially, the upper and lower end walls of the motor cavity 13 are fixedly mounted with the large motors 12, the left end surfaces of the large motors 12 abut against the left end wall of the motor cavity 13, one end surface of each of the two large motors 12 close to each other is provided with a screw 14 in a power connection manner, one end of each of the screw 14 close to each other extends into the abutting cavity 16 on the left side, one section of each of the screw 14 close to each other is provided with a main abutting block 48 in a threaded connection manner, the main abutting block 48 slides up and down between the left and right end walls of the abutting cavity 16 on the left side, one end surface of each of the main abutting blocks 48 far away from each other abuts against one end surface of each of the two pushed blocks 47 close to each other, the right end surface of the large motor 12 is provided with the motor shaft 22 in a power connection manner, the right end of the motor shaft 22 is rotatably connected in the right end wall of the motor cavity 13, and the periphery of the motor shaft 22 is provided with, the lower sections of the end surfaces, far away from each other, of the driving bevel gears 23 are engaged with and respectively provided with a driven bevel gear 39, a fan shaft 37 is fixedly arranged in the driven bevel gear 39, the upper end wall and the lower end wall of the abutting cavity 16 are communicated with the motor cavity 13 and respectively provided with a moving cavity 38, the fan shaft 37 rotates between the left end wall and the right end wall of the moving cavity 38 and slides up and down between the left end wall and the right end wall of the moving cavity 38, the ends, close to each other, of the upper pair of fan shafts 37 and the lower pair of fan shafts 37 extend into the abutting cavity 16, a fan 36 is fixedly arranged on the end surface, close to each other, of the upper pair of fan shafts and the lower pair of fan shafts 37, rotating blocks 40 are respectively arranged on the peripheries of the left fan shaft 37 and the right fan shafts in a rotating connection mode, one end surface, close to each other, of the two rotating blocks 40 is, at this time, the large motor 12 operates the driving screw 14 to rotate, and then drives the main abutting block 48 to move between the left end wall and the right end wall of the left abutting cavity 16, so that the main abutting block 48 continuously abuts against the pushed block 47, and then drives the pushed block 47 to move, and further drives the sliding rod 42 to slide in the limiting cavity 41, and further continuously compresses the return spring 43, and further drives the driving rack 45 to move, and further achieves the purpose of power failure in emergency, the movement of the sliding rod 42 drives the rotating block 40 to move, and further drives the fan shaft 37 to slide in the moving cavity 38, and further drives the driven bevel gear 39 to mesh with the driving bevel gear 23, at this time, the large motor 12 operates the driving motor shaft 22 to rotate, and further drives the driving bevel gear 23 to rotate, and further drives the driven bevel gear 39 to rotate, and further drives the fan shaft 37 to rotate, and further drives the fan 36 to rotate, and further achieves the purpose of, thereby avoiding the overload to cause the overhigh temperature and further avoiding the fire accident.

Beneficially, two communication holes 24 are respectively arranged in one end wall of the abutting cavity 16, which is far away from each other, and in communication with the electric wire cavity 20, the upper end wall and the lower end wall of each communication hole 24 are fixedly provided with an auxiliary connection wire 30, the auxiliary connection wires 30 are connected with the expansion block 19, and the left end faces of the two auxiliary connection wires 30 extend out of the outside, so that when the current in the auxiliary connection wires 30 is overloaded, the heat generated by the auxiliary connection wires 30 is increased, the temperature in the heated cavity 18 is increased suddenly, and the purpose of influencing the expansion block 19 is achieved.

Beneficially, two one section internal fixation that sliding block 34 is close to each other is equipped with circular telegram piece 50, the right-hand member face butt of vice wiring 30 is in on the circular telegram piece 50 and slide from top to bottom the left end face of sliding block 34, the butt is equipped with main wiring 35 on the right-hand member face of circular telegram piece 50, main wiring 35 is in the right-hand member face of sliding block 34 slides from top to bottom, the right-hand member of main wiring 35 stretches into the external world, when vice wiring 30 and main wiring 35 and circular telegram piece 50 are in the initial position, the electric current can enter into circular telegram piece 50 and then flow into in vice wiring 30 through main wiring 35, moves as sliding block 34, and then drives circular telegram piece 50 and remove, and then makes circular telegram piece 50 constantly break away from with vice wiring 30 and main wiring 35 butt, and then make the electric current unable conduction.

The following detailed description of the usage steps of a circuit breaker protection device for preventing the wire from being blown due to overload will be provided with reference to fig. 1 to 4:

in the initial state, the large motor 12 is not operated, the return spring 43 is not compressed, the drive bevel gear 23 and the driven bevel gear 39 are not engaged, the expansion block 19 is in the initial state and is not thermally expanded, the pushed block 47 is in the initial position, the main abutting block 48 is not abutted against the pushed block 47, the driven block 33 is in the initial position in the guide slide groove 32, the slide block 34 is in the initial position, and the sub-connection wire 30, the energizing block 50 and the main connection wire 35 are abutted and matched with each other.

When the auxiliary connecting wire is used, when the current in the auxiliary connecting wire 30 is overloaded, the heat generated by the auxiliary connecting wire 30 is increased, the heated cavity 18 is closed, so that the temperature in the heated cavity 18 is suddenly increased, and the expansion block 19 is good in thermal expansion performance, so that the expansion block 19 expands and is limited by the heated cavity 18, so that the upper end and the lower end of the expansion block 19 are continuously extended, the pushed block 47 is driven to move, the sliding rod 42 is driven to slide in the limiting cavity 41, the return spring 43 is continuously compressed, the driving rack 45 is driven to move, the transmission gear 46 is driven to rotate around the gear shaft 51, the driven rack 53 is driven to move, and the purpose of driving the driving block 25 to move is achieved;

when the driving block 25 moves, the belt 26 is driven to move, the tension wheel 28 is driven to rotate around the fixed shaft 27, the driven block 33 is driven to slide in the guide sliding groove 32, the two sliding blocks 34 are driven to move away from each other, and when the sliding blocks 34 move, the electrifying block 50 is driven to move, so that the electrifying block 50 is continuously separated from being abutted to the auxiliary wiring 30 and the main wiring 35, the current cannot be conducted, the purpose of power failure is achieved, and the purpose of automatic power failure is achieved;

when the auxiliary wiring 30, the main wiring 35 and the electrifying block 50 are at initial positions, current can enter the electrifying block 50 through the main wiring 35 and then flow into the auxiliary wiring 30, and when the sliding block 34 moves, the electrifying block 50 is driven to move, so that the electrifying block 50 is continuously separated from being abutted against the auxiliary wiring 30 and the main wiring 35, the current cannot be conducted, and the purpose of power failure is achieved;

when an emergency occurs, the expansion block 19 cannot move to cut off the power supply, at the moment, the large motor 12 operates to drive the screw rod 14 to rotate, so that the main abutting block 48 is driven to move between the left end wall and the right end wall of the abutting cavity 16 on the left side, the main abutting block 48 is further continuously abutted against the pushed block 47, the pushed block 47 is further driven to move, the sliding rod 42 is further driven to slide in the limiting cavity 41, the reset spring 43 is further continuously compressed, the driving rack 45 is further driven to move, and the purpose of cutting off the power supply in the emergency is achieved;

the sliding rod 42 moves to drive the rotating block 40 to move, so that the fan shaft 37 is driven to slide in the moving cavity 38, so that the driven bevel gear 39 is driven to be meshed with the driving bevel gear 23, at the moment, the large motor 12 operates to drive the motor shaft 22 to rotate, so that the driving bevel gear 23 is driven to rotate, the driven bevel gear 39 is driven to rotate, the fan shaft 37 is driven to rotate, so that the fan 36 is driven to rotate, the aim of cooling the abutting cavity 16 and the heated cavity 18 is fulfilled, the overhigh temperature caused by overload is avoided, and further the fire accident is avoided;

when the temperature in the heated cavity 18 is continuously reduced, because the expansion block 19 has good expansion contractibility, the expansion block 19 can be restored to the initial position, and then the pushed block 47 is driven to be restored to the initial position under the influence of the rebound force of the return spring 43, and then the driving rack 45 is driven to be restored to the initial position, and then the driving block 25 is driven to be restored to the initial position, and then the electrifying block 50 is restored to the initial position.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A circuit breaker protection device for avoiding wire overload to cause fusing comprises a protection device and is characterized in that: the protection device is internally provided with a motor cavity and a pushing cavity, the right end wall of the motor cavity is communicated with the left end wall of the pushing cavity, a heated base is fixedly arranged between the left end wall and the right end wall of the motor cavity, the heated base is internally provided with two butt cavities which are bilaterally symmetrical by taking the heated base as a symmetrical center, one end wall of each of the two butt cavities which are close to each other is communicated with a sliding cavity, the other end wall of each of the sliding cavities which are close to each other is communicated with a heated cavity, the butt cavities and the heated cavities are internally provided with pushing mechanisms, each pushing mechanism comprises a pushed block which slides up and down in the heated cavity, the left end and the right end of each pushed block respectively extend into the butt cavities, one end surface of each pushed block which is close to each other is provided with an expansion block in a butt joint manner, one end surface of each pushed block which is far away from each other is fixedly provided with a sliding rod, and the upper end wall and the lower, the sliding rod slides up and down between the left end wall and the right end wall of the limiting cavity, the periphery of the sliding rod is wound with reset springs, one ends of the two reset springs which are close to each other are fixedly connected to one end surface of the pushed block which is far away from each other, one ends of the reset springs which are far away from each other are fixedly connected to the upper end wall and the lower end wall of the heated cavity respectively, an active rack is fixedly arranged on the right end surface of the pushed block, the front end surface and the rear end surface of the active rack are respectively abutted against the front end wall and the rear end wall of the abutting cavity on the right side and move up and down between the front end wall and the rear end wall of the abutting cavity, a telescopic cavity is respectively arranged in the upper end wall and the lower end wall of the abutting cavity on the right side and communicated with the motor cavity, the active rack slides up and down between the left end wall and the right end wall of the telescopic cavity, the active rack can extend into the motor, rotate the chamber with it is equipped with shutdown mechanism to promote the intracavity, shutdown mechanism is including setting firmly rotate the gear shaft between the chamber front and back end wall, it is equipped with drive gear to rotate the connection in the periphery of gear shaft, drive gear is in it rotates just to rotate the intracavity drive gear's left end face meshing is in on the right-hand member face of initiative rack, drive gear's right-hand member face meshing is equipped with driven rack, the front and back terminal surface butt of driven rack is in promote on the chamber front and back end wall and promote and slide from top to bottom between the chamber front and back end wall, the initiative piece has set firmly on the right-hand member face of driven rack, the initiative piece is in promote and slide from top to bottom between the chamber front and back end wall.

2. The circuit breaker protection device of claim 1, wherein the circuit breaker protection device prevents the wire from blowing due to overload, and further comprises: the electric wire heating device is characterized in that an electric wire shell is fixedly arranged in the motor cavity and the push cavity, a left-right through electric wire cavity is arranged in the electric wire shell, the middle section of the heated base is matched with the electric wire shell, two pairs of fixing shafts which are bilaterally symmetrical by taking the push cavity as a symmetrical center are fixedly arranged between the front end wall and the rear end wall of the push cavity, the periphery of each fixing shaft is rotatably connected with a tensioning wheel, one end surface, far away from each other, of each upper tensioning wheel and the lower tensioning wheel is connected with a pulling belt, the left end of each pulling belt is fixedly connected onto one end surface, far away from each other, of the two driving blocks, the right end of each pulling belt is fixedly provided with a driven block, a fixing block is fixedly arranged between the front end wall and the rear end wall of the push cavity, one end surface, close to each, the driven piece along slide from top to bottom in the guide sliding groove, the right-hand member face butt of driven piece is in on the right-hand member wall in promotion chamber and the right-hand member wall in promotion chamber slides from top to bottom, the sliding block has set firmly on the terminal surface that the driven piece is close to each other, promote the chamber with be equipped with respectively that is linked together between the upper and lower end wall in electric wire chamber and push the chamber, the sliding block is in it slides from top to bottom just to push from top to bottom between the left and right sides end wall in chamber the one end that the sliding block is close to each other stretches into in the electric wire.

3. The circuit breaker protection apparatus for preventing a wire from blowing due to an overload according to claim 2, wherein: the upper end wall and the lower end wall of the motor cavity are fixedly provided with a large motor respectively, the left end surface of the large motor is abutted against the left end wall of the motor cavity, one end surface of the two large motors which are close to each other is provided with a screw rod in a power connection mode, one end of the screw rod which is close to each other extends into the abutting cavity on the left side, one section of the screw rod which is close to each other is provided with a main abutting block in a threaded connection mode, the main abutting block slides up and down between the left end wall and the right end wall of the abutting cavity on the left side, one end surface of the main abutting block which is far away from each other is abutted against one end surface of the two pushed blocks which are close to each other, the right end surface of the large motor is provided with a motor shaft in a power connection mode, the right end of the motor shaft is rotatably connected into the right end wall of the motor cavity, the periphery of the motor shaft is provided with driving bevel gears, the fan shaft is fixedly arranged in the driven bevel gear, the upper end wall and the lower end wall of the butt joint cavity and the motor cavity are communicated with each other and are respectively provided with a moving cavity, the fan shaft rotates between the left end wall and the right end wall of the moving cavity and slides up and down between the left end wall and the right end wall of the moving cavity, the upper end and the lower end of the fan shaft close to each other extend into the butt joint cavity and the upper end and the lower end of the fan shaft close to each other, the fan is fixedly arranged on one end face of the butt joint cavity and the lower end of the fan shaft close to each other, the left end and the right end of the fan shaft are rotatably connected and are respectively provided with rotating blocks, and one.

4. The circuit breaker protection device of claim 1, wherein the circuit breaker protection device prevents the wire from blowing due to overload, and further comprises: two communicating holes are respectively formed in one end wall, away from each other, of the abutting cavity and communicated with the wire cavity, auxiliary connecting wires are fixedly arranged in the upper end wall and the lower end wall of each communicating hole and are mutually connected with the expansion blocks, and the left end faces of the two auxiliary connecting wires extend out of the outside.

5. The circuit breaker protection apparatus for preventing a wire from blowing due to an overload according to claim 2, wherein: two one section internal fixation that the sliding block is close to each other has the circular telegram piece, the right-hand member face butt of vice wiring is in on the circular telegram piece and slide from top to bottom on the left end face of sliding block, the butt is equipped with main wiring on the right-hand member face of circular telegram piece, main wiring is in the right-hand member face of sliding block slides from top to bottom, the right-hand member of main wiring stretches into the external world.