CN113035633B - A Hybrid HVDC Bidirectional Circuit Breaker - Google Patents

Abstract

The present invention relates to the technical field of circuit breakers, in particular to a hybrid high-voltage DC bidirectional circuit breaker, which includes a first mechanism box, and a second mechanism box is installed on the upper and lower parts of the right side of the first mechanism box, and the second mechanism box A box door is installed on the front side, and three sealing plates are installed on the sides of the two box doors that are close to each other. An arc extinguishing chamber is installed between the upper and lower two sealing plates, and a conductive rod is installed on the surface of the sealing plate. , the conductive rod moves through the second mechanism box, a contact is installed at one end of the conductive rod, a bellows is installed on the outer side of the conductive rod, and the three conductive rods located in the inner cavity of the second mechanism box are installed through the outer side There is a lift plate. The present invention can make the two contacts that connect the circuit move to the direction of separation at the same time through the mutual cooperation between the structures, so that the arc is elongated, so that the arc can be extinguished quickly, and the wiring is convenient, and the resistance at the wiring will not increase. The problem.

Description

A Hybrid HVDC Bidirectional Circuit Breaker

technical field

The invention relates to the technical field of circuit breakers, in particular to a hybrid high-voltage direct current bidirectional circuit breaker.

Background technique

A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electrical energy. Start the asynchronous motor frequently, protect the power line and the motor, and automatically cut off the circuit when they have severe overload, short circuit and undervoltage faults. Its function is equivalent to the combination of a fuse switch and an overheating relay. .

Existing high-voltage circuit breakers have extremely high wiring requirements, and the structure inside the mechanism box is generally more complicated, which is more troublesome in the process of circuit maintenance. As a result, when it is necessary to reconnect the circuit breaker circuit, it usually takes a long time, resulting in the circuit being disconnected all the time state, which affects people's use, and the general conductive end of the existing circuit breaker is generally composed of a moving contact and a static contact, but when this connection method is disconnected, the arc is too short, making it difficult to quickly eliminate the arc . For this reason, we propose a hybrid high-voltage DC bidirectional circuit breaker.

Contents of the invention

The purpose of the present invention is to solve the shortcomings in the prior art, and propose a hybrid high-voltage DC bidirectional circuit breaker, which has a reasonable design and an ingenious structure. Through the mutual cooperation between the structures, the two The two contacts move in the direction of separation at the same time, so that the arc is elongated, so that the arc can be extinguished quickly, and the wiring is convenient, and there will be no problem of increased resistance at the wiring. It has good market competitiveness and is worth recommending.

In order to achieve the above object, the present invention adopts the following technical solutions:

Design a hybrid high-voltage DC bidirectional circuit breaker, including a first mechanism box, a second mechanism box is installed on the upper and lower parts of the right side of the first mechanism box, and a box door is installed on the front of the second mechanism box. Three sealing plates are installed on the sides of the box doors that are close to each other. An arc extinguishing chamber is installed between the upper and lower two sealing plates. Mechanism box, a contact is installed at one end of the conductive rod, a bellows is installed on the outside of the conductive rod, and a lifting plate is installed on the outside of the three conductive rods located in the inner cavity of the same second mechanism box. Two first springs are installed on the side, the end of the first spring far away from the lifting plate is installed on the surface side of the second mechanism box, a pad is installed on one side of the conductive rod, and a box body is installed on the side of the pad , the front of the box body is movably installed with a box cover, the left side of the box body is movable through and installed with a fixing rod, the outside of the fixing rod is installed with a non-slip sleeve, and the outer side of the fixing rod is provided with a groove, so The groove and the wire-fixing rod are designed in one piece, the inner side of the groove is movably installed with a crimping structure, the rear side of the box body is installed with a clip shrapnel, and the right side of the box body is movably installed with a resisting structure. Two U-shaped fixing rods are installed in the cavity of the second mechanism box, and a sliding plate is installed on the outside of the two U-shaped fixing rods, and a first L-shaped connecting rod is installed on one side of the sliding plate. Limiting rods are installed on the front and rear sides of the L-shaped connecting rod, a third spring is installed on the right side of the first L-shaped connecting rod, and the end of the third spring away from the first L-shaped connecting rod is installed in the second mechanism box On the right side of the cavity, two guide plates are installed on the side of the lifting plate close to the sliding plate, the limit rod is located between the guide plate and the lifting plate, and the first L-shaped connecting rod is located between the two guide plates , an L-shaped movable rod is installed on one side of the sliding plate, the L-shaped movable rod moves through the second mechanism box, the L-shaped movable rod moves through the first mechanism box, and the left side of the inner cavity of the first mechanism box Both the upper and lower parts are provided with a chute, and a control structure is slidably installed inside the chute.

Preferably, the spacer is made of insulating material.

Preferably, a wire hole is provided on the surface of the box cover, and the wire hole and the box cover are integrally designed.

Preferably, the crimping structure includes a U-shaped clamping rod movably installed inside the groove, a groove is installed on one side of the U-shaped clamping rod, and the end of the groove away from the U-shaped clamping rod is installed inside the groove On one side, the wire crimping structure also includes a first movable rod installed on the left side of the wire fixing rod, one end of the first movable rod passes through the wire fixing rod to the inside of the groove, and the first movable rod is located in the groove A first resisting block is installed at one end inside, and a button is installed at the end of the first movable rod away from the first resisting block.

Preferably, the axial section of the first collision block is trapezoidal, and the first collision block and the first movable rod are integrally designed.

Preferably, the clamping elastic piece is made of copper, and the rear side of the clamping elastic piece is connected to the conductive rod.

Preferably, the interference structure includes a threaded rod movably installed on the right side of the box body, a knob is installed on the right end of the threaded rod, a movement block is installed through the outer thread of the knob, and two second movement blocks are installed on the left side of the movement block. Two movable rods, the second movable rods move through the right side of the box body, and the ends of the two second movable rods away from the moving block are equipped with second conflicting blocks.

Preferably, the control structure includes a slider slidingly installed inside the chute, a connecting column is installed on one side of the slider, and a movement plate is installed on the end of the connection column away from the chute, and the surface of the movement plate has a limited opening. position hole, the limit hole and the movement plate are integrally designed, a second L-shaped connecting rod is installed on one side of the movement plate, and a third conflicting block is installed at one end of the second L-shaped connecting rod. The three collision blocks and the L-shaped movable rod cooperate with each other. The control structure also includes a control rod that is movable through and installed in the middle part of the left side of the first mechanism box. A rotating wrench is installed on the left end of the control rod. A control board is installed on one end of the wrench, and two limit blocks are installed on one side of the control board, the limit blocks and the control board are designed in one piece, and the limit blocks are located inside the movement board.

Preferably, the third collision block and the second L-shaped connecting rod are integrally designed, and the axial section of the third collision block is trapezoidal.

The beneficial effect of the hybrid high-voltage direct current bidirectional circuit breaker proposed by the present invention is that the present invention needs to turn the wrench to drive the control rod to rotate when performing the circuit breaking operation, thereby driving the control board to rotate to one side, and the control board drives the limiter The rotation of the bit block can drive the movement board as a whole to move towards the direction close to the control rod. At this time, the movement plate drives the second L-shaped connecting rod to move towards the direction close to the control rod, thereby driving the third conflicting block to move towards the direction close to the control rod. Movement, due to the structural characteristics of the third conflicting block, when one end of the L-shaped movable rod is not opposed by the third conflicting block, the sliding plate slides to the right under the action of the third spring, so that the L-shaped movable rod is always in contact with the first The state of the surface of the third collision block makes the first L-shaped connecting rod drive the limit rod to move to the right. At this time, the limit rod drives the entire lifting plate to move away from the arc extinguishing chamber through the resistance to the guide plate. , the lifting plate can drive the conductive rod to move at the same time, so that the two contacts inside the same arc extinguishing chamber are separated, and the operation of breaking the circuit is completed. It is worth mentioning that the two contacts move at the same time, which can be elongated at the moment of breaking the circuit The arc makes the arc extinguish quickly, which effectively improves the arc extinguishing effect of the circuit breaker and reduces the damage caused by the arc to the arc extinguishing chamber, so as to effectively improve the service life of the circuit breaker, and its circuit breaker is stable and easy to operate, which improves the circuit breaker. The practicability of separating the mechanism from the mechanism is convenient for subsequent maintenance. When wiring the circuit breaker, first open the box cover, and then turn the knob to drive the threaded rod to rotate, so that the moving block moves to the left, thereby passing through the first The second movable rod drives the second conflicting block to move to the left, and the second conflicting block can resist the two clamping shrapnels and rotate at a certain angle in a direction away from each other, so that the two clamping shrapnels are in a tendency to open, which is convenient for inserting the wire , then press the button, the button can drive the first movable rod to slide to the right, the first movable rod drives the first collision block to slide to the right, the first collision block collides with the U-shaped clamping rod and protrudes out of the groove, and then the cable is extended After entering the position between the U-shaped clamping rod and the groove, pull the button, so that the U-shaped clamping rod returns to the inside of the groove under the action of the second spring. At this time, the wire is also pressed inside the groove, and then reverses Turn the knob to reset the second conflicting block, and reset the clamping shrapnel. Finally, turn the anti-slip sleeve to drive the wire fixing rod to rotate as a whole, so that the copper wire of the wire is wound on the outer surface of the wire fixing rod until the wire clamping shrapnel is fully compressed and wound more. The conductive rod is connected to the wire clamping shrapnel, and the wire clamping shrapnel is fully connected to the wire to complete the wiring operation. The wiring is firm and fully connected to prevent the failure of the increased resistance at the wiring.

Description of drawings

Fig. 1 is a schematic structural diagram of the front view of a hybrid high voltage DC bidirectional circuit breaker proposed by the present invention;

Fig. 2 is a schematic cross-sectional structure schematic diagram of a front view of a hybrid high-voltage DC bidirectional circuit breaker proposed by the present invention;

Fig. 3 is a schematic structural view of a cross-sectional view of a fixed line rod of a hybrid high-voltage DC bidirectional circuit breaker proposed by the present invention;

Fig. 4 is a schematic diagram of the side structure of a hybrid high-voltage DC bidirectional circuit breaker clamping shrapnel proposed by the present invention;

Fig. 5 is a schematic diagram of the structure of one side of the lifting plate of a hybrid high-voltage DC bidirectional circuit breaker proposed by the present invention;

Fig. 6 is a schematic diagram of the structure of the left side surface of the inner cavity of the first mechanism box of a hybrid high-voltage DC bidirectional circuit breaker proposed by the present invention;

Fig. 7 is a structural schematic diagram of a hybrid high-voltage DC bidirectional circuit breaker A proposed by the present invention.

In the figure: the first mechanism box 1, the second mechanism box 2, the box door 3, the sealing plate 4, the arc extinguishing chamber 5, the conductive rod 6, the contact 7, the bellows 8, the lifting plate 9, the first spring 10, the cushion Block 11, box body 12, box cover 13, wire hole 14, wire fixing rod 15, groove 16, U-shaped clamping rod 17, second spring 18, first movable rod 19, first conflict block 20, button 21, Thread clip shrapnel 22, threaded rod 23, knob 24, moving block 25, second moving rod 26, second conflicting block 27, U-shaped fixing rod 28, sliding plate 29, first L-shaped connecting rod 30, limit rod 31 , the third spring 32, guide plate 33, L-shaped movable rod 34, chute 35, slide block 36, connecting column 37, motion plate 38, the second L-shaped connecting rod 39, the third conflict block 40, control rod 41, Rotate wrench 42, control panel 43, limit block 44, limit hole 45, anti-skid cover 46.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Referring to Figure 1-7, a hybrid high-voltage DC bidirectional circuit breaker includes a first mechanism box 1, a second mechanism box 2 is installed on the upper and lower parts of the right side of the first mechanism box 1, and a box is installed on the front of the second mechanism box 2. Door 3, three sealing plates 4 are installed on the side close to each other of the two box doors 3, an arc extinguishing chamber 5 is installed between the upper and lower two sealing plates 4, and a conductive rod 6 is installed through the surface of the sealing plate 4, and the conductive rod 6 moves through the second mechanism box 2, a contact 7 is installed at one end of the conductive rod 6, a bellows 8 is installed on the outside of the conductive rod 6, and a lifting plate is installed on the outside of the three conductive rods 6 located in the inner cavity of the same second mechanism box 2 9. Two first springs 10 are installed on one side of the lifting plate 9, and the end of the first spring 10 away from the lifting plate 9 is installed on the surface side of the second mechanism box 2, and a pad 11 is installed on the side of the conductive rod 6, and the pad 11 is made of insulating material, which can effectively protect the box body 12 .

A box body 12 is installed on one side of the spacer 11, and a box cover 13 is movably installed on the front of the box body 12. The surface of the box cover 13 is provided with a wire hole 14. The wire hole 14 and the box cover 13 are integrally designed, so that the wire rod is exported after wiring.

The left side of the box body 12 is movable through and installed with a fixing rod 15, and the outer side of the fixing rod 15 is installed with a non-slip sleeve 46. The outer side of the fixing rod 15 is provided with a groove 16, and the groove 16 and the fixing rod 15 are integrally designed. The inner side of the groove 16 is movably installed with a crimping structure, which includes a U-shaped clamping rod 17 that is movably installed on the inner side of the groove 16. A groove 16 is installed on one side of the U-shaped clamping rod 17, and the groove 16 is far away from the U-shaped clamping rod 17. One end of the first movable rod 19 is installed on the inner side of the groove 16, and the crimping structure also includes a first movable rod 19 that is movable through and installed on the left side of the wire fixing rod 15. One end of the first movable rod 19 penetrates the wire fixing rod 15 to the inside of the groove 16, One end of the first movable rod 19 located inside the groove 16 is equipped with a first conflict block 20, the axial section of the first conflict block 20 is trapezoidal, the first conflict block 20 and the first movable rod 19 are integrally designed, the first movable rod 19, a button 21 is installed on the end away from the first conflicting block 20, press the button 21, the button 21 can drive the first movable rod 19 to slide to the right, and the first movable rod 19 drives the first conflicting block 20 to slide to the right, the first The conflict block 20 collides with the U-shaped clamping rod 17 and stretches out the inside of the groove 16, and after the cable is stretched into the position between the U-shaped clamping rod 17 and the groove 16, the button 21 is pulled, so that the U-shaped clamping rod 17 is in the position of the second spring. 18 returns to the inside of the groove 16, and the wire at this time is also pressed in the inside of the groove 16, so that the wire is fixed, which is convenient for subsequent wiring work.

The rear side of the box body 12 is installed with a clamp spring 22, which is made of copper. The rear side of the clamp spring 22 is connected to the conductive rod 6. By increasing the contact area between the clamp spring 22 and the wire, the connection resistance is prevented from being too large .

The right side of the box body 12 is movably equipped with a conflicting structure, and the conflicting structure includes a threaded rod 23 that is movably installed on the right side of the box body 12. A knob 24 is installed at the right end of the threaded rod 23, and a moving block 25 is installed through the outer thread of the knob 24. The moving block 25 Two second movable rods 26 are installed on the left side, and the second movable rods 26 move through the right side of the box body 12. The ends of the two second movable rods 26 away from the moving block 25 are equipped with a second conflicting block 27. By turning the knob 24 , to drive the threaded rod 23 to rotate, so that the moving block 25 moves to the left, so that the second moving rod 26 drives the second conflicting block 27 to move to the left, and the second conflicting block 27 can resist the two clamping elastic pieces 22 to move away from each other The direction is rotated at a certain angle, so that the two clamping shrapnels 22 tend to open, which is convenient for inserting the wire.

Two U-shaped fixed rods 28 are installed in the inner cavity of the second mechanism box 2, and a sliding plate 29 is installed through the outer sides of the two U-shaped fixed rods 28, and a first L-shaped connecting rod 30 is installed on one side of the sliding plate 29, and the first L-shaped connecting rod 30 is installed on one side of the sliding plate 29. Type connecting rod 30 front and back both sides all are equipped with limiting rod 31, the first L-type connecting rod 30 right sides are equipped with the 3rd spring 32, and the 3rd spring 32 is installed in the second mechanism box far away from an end of the first L-shaped connecting rod 30 2 On the right side of the inner cavity, two guide plates 33 are installed on the side of the lifting plate 9 close to the sliding plate 29, the limit rod 31 is located between the guide plate 33 and the lifting plate 9, and the first L-shaped connecting rod 30 is located between the two guiding plates. Between the plates 33, an L-shaped movable rod 34 is installed on one side of the sliding plate 29, the L-shaped movable rod 34 moves through the second mechanism case 2, and the L-shaped movable rod 34 moves through the first mechanism case 1, and the first mechanism case 1 The upper and lower parts on the left side of the cavity are provided with a chute 35, and a control structure is slidably installed inside the chute 35. The control structure includes a slider 36 slidably installed inside the chute 35, and a connecting column 37 is installed on one side of the slider 36, and the connecting column 37 is equipped with a motion plate 38 away from the end of the chute 35, and the surface of the motion plate 38 is provided with a limit hole 45, the limit hole 45 and the motion plate 38 are integrally designed, and the second L-shaped connecting rod 39 is installed on one side of the motion plate 38 , one end of the second L-shaped connecting rod 39 is equipped with a third conflicting block 40, the third conflicting block 40 is integrally designed with the second L-shaped connecting rod 39, the axial section of the third conflicting block 40 is trapezoidal, and the third conflicting block 40 Interacting with the L-shaped movable rod 34, the control structure also includes a control rod 41 that is movable through and installed in the middle part of the left side of the first mechanism box 1. The left end of the control rod 41 is equipped with a rotating wrench 42, and the control rod 41 is far away from the position of the rotating wrench 42. One end is equipped with a control panel 43, and two limit blocks 44 are installed on one side of the control panel 43. The limit block 44 and the control panel 43 are integrally designed, and the limit block 44 is located inside the movement plate 38. Turn and turn the wrench 42 to drive the control lever 41 to rotate, thereby driving the control plate 43 to rotate to one side. The control plate 43 can drive the movement plate 38 to move in a direction close to the control lever 41 as a whole by driving the stop block 44 to rotate. The moving plate 38 drives the second L-shaped connecting rod 39 to move in a direction close to the control rod 41, thereby driving the third conflicting block 40 to move in a direction close to the control rod 41. Due to the structural characteristics of the third conflicting block 40, when the L-shaped When one end of the movable rod 34 is not touched by the third conflicting block 40, the sliding plate 29 slides to the right under the action of the third spring 32, so that the L-shaped movable rod 34 is always in the state of contacting the surface of the third conflicting block 40, thus Make the first L-shaped connecting rod 30 drive the limit rod 31 to move to the right, at this time, the limit rod 31 drives the entire lifting plate 9 to move away from the arc extinguishing chamber 5 through the resistance to the guide plate 33, and the lifting The plate 9 can drive the conductive rod 6 to move at the same time, so that the two contacts 7 inside the same arc extinguishing chamber 5 are separated, and the operation of breaking the circuit is completed. The arc is elongated instantly, so that the arc is quickly extinguished, which effectively improves the arc extinguishing effect of the circuit breaker, reduces the damage caused by the arc to the arc extinguishing chamber 5, and thus achieves the effect of effectively improving the service life of the circuit breaker.

Working principle: when the present invention performs circuit breaker operation, it is necessary to turn the wrench 42 to drive the control rod 41 to rotate, thereby driving the control board 43 to rotate to one side, and the control board 43 can drive the movement board 38 as a whole by driving the limit block 44 to rotate Move towards the direction close to the control rod 41, the moving plate 38 at this time drives the second L-shaped connecting rod 39 to move towards the direction close to the control rod 41, thereby driving the third conflicting block 40 to move towards the direction close to the control rod 41, because The structural features of the third conflict block 40, when one end of the L-shaped movable rod 34 is not interfered by the third conflicting block 40, the sliding plate 29 slides to the right under the action of the third spring 32, so that the L-shaped movable rod 34 is always It is in the state of contacting the surface of the third conflicting block 40, so that the first L-shaped connecting rod 30 drives the stop rod 31 to move to the right. At this time, the stop rod 31 drives the entire lifting plate 9 moves away from the arc extinguishing chamber 5, and the lifting plate 9 can drive the conductive rod 6 to move simultaneously, so that the two contacts 7 inside the same arc extinguishing chamber 5 are separated, and the circuit breaking operation is completed. It is worth mentioning that, The two contacts 7 move at the same time, which can elongate the arc at the moment of breaking the circuit, so that the arc can be extinguished quickly. When wiring the circuit breaker, first open the box cover 13, and then turn the knob 24 to drive the threaded rod 23 to rotate, so that the moving block 25 moves to the left, so that the second movable rod 26 drives the second conflicting block 27 to move to the left, and the second conflicting block 27 can resist the two clamping elastic pieces 22 and rotate at a certain angle in a direction away from each other, so that the two The thread clip spring 22 is in a tendency to open, which is convenient for inserting the wire, and then the button 21 is pressed, and the button 21 can drive the first movable rod 19 to slide to the right, and the first movable rod 19 drives the first collision block 20 to slide to the right. The first conflicting block 20 collides with the U-shaped clamping rod 17 and stretches out the inside of the groove 16, and after the cable is stretched into the position between the U-shaped clamping rod 17 and the groove 16, the button 21 is pulled, so that the U-shaped clamping rod 17 is in the second position. Under the action of the second spring 18, it returns to the inside of the groove 16. At this time, the wire is also pressed in the inside of the groove 16, and then the knob 24 is turned in the opposite direction to reset the second conflicting block 27, and the clamping shrapnel 22 is also reset. The anti-slip sleeve 46 drives the wire fixing rod 15 to rotate as a whole, so that the copper wire of the wire is wound on the outer surface of the wire fixing rod 15 until the clamping spring 22 fully compresses the wire wound multiple times, and the conductive rod 6 is connected with the clamping spring 22. However, the clamping shrapnel 22 is fully connected with the wires to complete the wiring operation. The wiring is firm and fully connected. The present invention is reasonable in design and ingenious in structure. Through mutual cooperation between the structures, it has good market competitiveness and is worth recommending.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (1)

1. A method for using a hybrid high-voltage direct current bidirectional circuit breaker, said circuit breaker comprising a first mechanism box (1), characterized in that the upper and lower parts of the right side of said first mechanism box (1) are equipped with second Mechanism box (2), the front of the second mechanism box (2) is equipped with a box door (3), and three sealing plates (4) are installed on the side where the two box doors (3) are close to each other. An arc extinguishing chamber (5) is installed between the two sealing plates (4), and a conductive rod (6) is installed through the surface of the sealing plate (4), and the conductive rod (6) moves through the second mechanism box. (2), a contact (7) is installed at one end of the conductive rod (6), and a bellows (8) is installed on the outer side of the conductive rod (6), three of the inner cavities located in the same second mechanism box (2) A lifting plate (9) is installed through the outer side of the conductive rod (6), and two first springs (10) are installed on one side of the lifting plate (9), and the first springs (10) are far away from the lifting plate (9). ) is installed on one side of the surface of the second mechanism box (2), a pad (11) is installed on one side of the conductive rod (6), and a box body (12) is installed on one side of the pad (11), A box cover (13) is movably installed on the front side of the box body (12), a thread fixing rod (15) is installed on the left side of the box body (12) movably, and an anti-skid rod (15) is installed on the outside of the box body (12). sleeve (46), the outer side of the fixing rod (15) is provided with a groove (16), the groove (16) and the fixing rod (15) are integrally designed, and the inner side of the groove (16) is movable A crimping structure is installed, the rear side of the box body (12) is penetrated with a clamping shrapnel (22), and the right side of the box body (12) is movably installed with a conflicting structure, and the inside of the second mechanism box (2) Two U-shaped fixed rods (28) are installed in the cavity, and a sliding plate (29) is installed on the outside of the two U-shaped fixed rods (28), and a first L-shaped connection is installed on one side of the sliding plate (29). rod (30), the front and rear sides of the first L-shaped connecting rod (30) are equipped with limit rods (31), and the right side of the first L-shaped connecting rod (30) is equipped with a third spring (32), The end of the third spring (32) away from the first L-shaped connecting rod (30) is installed on the right side of the inner cavity of the second mechanism box (2), and the lifting plate (9) is close to the side of the sliding plate (29) Two guide plates (33) are installed, and the stop bar (31) is positioned between the guide plate (33) and the lifting plate (9), and the first L-shaped connecting rod (30) is positioned between the two guide plates ( 33), an L-shaped movable rod (34) is installed on one side of the sliding plate (29), and the L-shaped movable rod (34) moves through the second mechanism box (2), and the L-shaped movable rod ( 34) The movement runs through the first mechanism box (1), and a chute (35) is provided at the upper and lower parts of the left side of the inner cavity of the first mechanism box (1), and a control structure is slidably installed inside the chute (35); The spacer (11) is made of an insulating material; the surface of the lid (13) is provided with a wire hole (14), and the wire hole (14) and the lid (13) are integrally designed; The crimping structure includes a U-shaped clamping rod (17) that is movably installed inside the groove (16), and a groove (16) is installed on one side of the U-shaped clamping rod (17), and the groove (16) One end away from the U-shaped clamping rod (17) is installed on the inner side of the groove (16), and the wire pressing structure also includes a first movable rod (19) that is movable and installed on the left side of the wire fixing rod (15). One end of the first movable rod (19) passes through the thread fixing rod (15) to the inside of the groove (16), and the first movable rod (19) is installed with a first collision block (20) at one end inside the groove (16). ), the first movable rod (19) is equipped with a button (21) at one end away from the first collision block (20); The axial section of the first collision block (20) is trapezoidal, and the first collision block (20) and the first movable rod (19) are integrally designed; The clamping shrapnel (22) is made of copper, and the rear side of the clamping shrapnel (22) is connected with the conductive rod (6); The interference structure includes a threaded rod (23) that is movably installed on the right side of the box body (12), a knob (24) is installed on the right end of the threaded rod (23), and a moving block is installed through the outer thread of the knob (24) (25), two second movable rods (26) are installed on the left side of the moving block (25), and the second movable rods (26) move through the right side of the box body (12). The end of the movable rod (26) away from the moving block (25) is equipped with a second conflicting block (27); The control structure includes a slide block (36) slidably installed inside the chute (35), a connecting post (37) is installed on one side of the slide block (36), and the connecting post (37) is far away from the chute (35). ) is equipped with a motion plate (38), the surface of the motion plate (38) offers a limit hole (45), the limit hole (45) and the motion plate (38) are integrated design, the motion plate (38) A second L-shaped connecting rod (39) is installed on one side, and a third conflicting block (40) is installed at one end of the second L-shaped connecting rod (39), and the third conflicting block (40) and the L Type movable rods (34) cooperate with each other, and the control structure also includes a control rod (41) that is movable through and installed in the middle part of the left side of the first mechanism box (1), and a rotating wrench is installed at the left end of the control rod (41) (42), the end of the control rod (41) away from the turning wrench (42) is equipped with a control plate (43), and two limit blocks (44) are installed on one side of the control plate (43). The block (44) and the control panel (43) are designed in one piece, and the limit block (44) is located inside the movement plate (38); The third collision block (40) and the second L-shaped connecting rod (39) are integrally designed, and the axial section of the third collision block (40) is trapezoidal; During use, when performing a circuit breaker operation, it is necessary to turn the wrench 42 to drive the control lever 41 to rotate, thereby driving the control plate 43 to rotate to one side, and the control plate 43 can drive the movement plate 38 as a whole to approach by driving the limit block 44 to rotate. The direction of the control rod 41 moves, and the moving plate 38 at this time drives the second L-shaped connecting rod 39 to move towards the direction close to the control rod 41, thereby driving the third conflicting block 40 to move towards the direction close to the control rod 41, because the third The structural feature of the conflicting block 40, when one end of the L-shaped movable rod 34 is not interfered by the third conflicting block 40, the sliding plate 29 slides to the right under the action of the third spring 32, so that the L-shaped movable rod 34 is always in contact The state of the surface of the third collision block 40 makes the first L-shaped connecting rod 30 drive the stop rod 31 to move to the right. Moving away from the direction of the arc extinguishing chamber 5, the lifting plate 9 can drive the conductive rod 6 to move simultaneously, so that the two contacts 7 inside the same arc extinguishing chamber 5 are separated, and the operation of breaking the circuit is completed. It is worth mentioning that the two The contacts 7 move at the same time, which can elongate the arc at the moment of breaking the circuit, so that the arc can be extinguished quickly. When wiring the circuit breaker, first open the box cover 13, and then turn the knob 24 to drive the threaded rod 23 to rotate so that the moving block 25 Move to the left side, thereby driving the second conflicting block 27 to move to the left through the second movable rod 26, and the second conflicting block 27 can resist the two clamping elastic pieces 22 and rotate at a certain angle in a direction away from each other, so that the two clamping wires The shrapnel 22 is in a tendency to open, which is convenient for the wire to be inserted, and then the button 21 is pressed, and the button 21 can drive the first movable rod 19 to slide to the right, and the first movable rod 19 drives the first collision block 20 to slide to the right, and the first The conflict block 20 collides with the U-shaped clamping rod 17 and stretches out the inside of the groove 16, and after the cable is stretched into the position between the U-shaped clamping rod 17 and the groove 16, the button 21 is pulled, so that the U-shaped clamping rod 17 is in the position of the second spring. 18 returns to the inside of the groove 16, and the wire at this time is also pressed inside the groove 16, and then the knob 24 is turned in the opposite direction to reset the second conflicting block 27, and the clamping shrapnel 22 is also reset, and finally by turning the anti-slip sleeve 46 drives the wire fixing rod 15 to rotate as a whole, so that the copper wire of the wire is wound on the outer surface of the wire fixing rod 15, until the clamping spring 22 fully compresses the wire wound multiple times, the conductive rod 6 is connected with the clamping spring 22, and the clamping The wire elastic piece 22 is fully connected with the wire, and the wiring operation is completed, and the wiring is firm and fully connected.

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