CN113823524A

CN113823524A - Vacuum circuit breaker with protection function

Info

Publication number: CN113823524A
Application number: CN202111122877.4A
Authority: CN
Inventors: 钱李楚; 金贻林; 齐明
Original assignee: Kuo Yuan Electric Co ltd
Current assignee: Kuo Yuan Electric Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2021-12-21
Anticipated expiration: 2041-09-24
Also published as: CN113823524B

Abstract

The application relates to the field of vacuum circuit breakers, in particular to a vacuum circuit breaker with a protection function, which comprises a box body, the box body is provided with a plurality of solid-sealed polar columns, the box body is provided with a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are arranged oppositely, a plurality of third sealing plates are arranged between the first sealing plate and the second sealing plate, the first sealing plate side wall, the second sealing plate side wall and the third sealing plate side wall surround the solid-sealed polar pole, the side wall of the first sealing plate is provided with a receiving groove, a receiving shaft is rotatably arranged on the opposite side wall of the receiving groove, the sealing strip is arranged on the storage shaft in a surrounding mode, one end of the sealing strip is connected to the storage shaft, a sealing groove used for clamping the sealing strip is formed in the second sealing plate, and the side wall of the sealing strip is attached to and sealed with the third sealing plate. This application has the effect that improves the water-proof effects of junction.

Description

Vacuum circuit breaker with protection function

Technical Field

The application relates to the field of vacuum circuit breakers, in particular to a vacuum circuit breaker with a protection function.

Background

Along with the development of our society, electrical equipment is more and more popular, people also pay more and more attention to the safety of the electrical equipment, and an indoor vacuum circuit breaker is an important protection device.

Vacuum circuit breaker is generally including the box, installs a plurality of solid utmost point posts that seal on the box, is provided with on the solid utmost point post to be used for electrically conductive connection piece, and the box is provided with energy storage button, closing button and manual energy storage pivot on the lateral wall towards solid utmost point post that seals, and the vacuum circuit breaker of indoor usefulness generally transports in the cubical switchboard through the dolly.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the outside rains, the worker carries the vacuum circuit breaker from the truck to the indoor in-process and easily drenches with rain, and outside water easily gets into from the connection piece of solid utmost point post and seals utmost point post admittedly this moment to the normal work of solid utmost point post that seals is influenced.

Disclosure of Invention

In order to improve the problem that the rainwater easily gets into from connection piece and seals utmost point post admittedly, this application provides a take protect function's vacuum circuit breaker.

The application provides a take safeguard function's vacuum circuit breaker adopts following technical scheme:

the utility model provides a take safeguard function's vacuum circuit breaker, includes the box, be provided with a plurality of solid utmost point posts that seal on the box, be provided with first closing plate and second closing plate on the box, first closing plate and second closing plate are relative setting, be provided with a plurality of third closing plates between first closing plate and the second closing plate, first closing plate lateral wall, second closing plate lateral wall and third closing plate lateral wall will seal the utmost point post admittedly and surround, be provided with on the first closing plate lateral wall and accomodate the groove, it has the axle of accomodating to rotate on the relative lateral wall of groove to accomodate, it has the sealing strip to accomodate to encircle on the axle, the one end of sealing strip is connected and is accomodate epaxially, be provided with the seal groove that is used for the centre gripping sealing strip on the second closing plate, the sealing strip lateral wall still seals with the laminating of third closing plate.

By adopting the technical scheme, when the box body needs to be carried, the sealing strip can be pulled out from the containing shaft, then the sealing strip is pulled into the sealing groove, the sealing strip is clamped and fixed through the sealing groove, and the sealing strip is also attached and sealed with the third sealing plate, so that the sealing strip shields the solid-sealed polar pole, the probability that external rainwater enters the solid-sealed polar pole from the solid-sealed polar pole is reduced, the solid-sealed polar pole is protected, and the waterproof effect of the solid-sealed polar pole is enhanced; when the box body is conveyed to a destination, the sealing belt can be pulled out of the sealing groove, and then the storage shaft is rotated to withdraw the sealing belt into the storage groove, so that the operation is convenient and rapid; when the staff lost one's hand and fall the box on the ground, first closing plate, second closing plate and third closing plate can also play the guard action to sealing the utmost point post admittedly, have reduced and have fallen to cause the probability of damage to sealing the utmost point post admittedly.

Preferably, still be provided with the spout on the box, first closing plate, second closing plate and third closing plate all slide in the spout, the direction of depth of spout extends along the direction of height of first closing plate, just the degree of depth of spout is greater than first sealed height, be provided with the slot on the spout inside wall, be provided with the fixed slot on first closing plate, second closing plate and the third closing plate lateral wall, the slot is the one-to-one setting with the fixed slot, just it has the slider to slide in the fixed slot, the slider is used for sliding to the slot in, makes first closing plate, second closing plate and third closing plate are fixed.

By adopting the technical scheme, the first sealing plate, the second sealing plate and the third sealing plate can stretch and retract by sliding the first sealing plate, the second sealing plate and the third sealing plate in the sliding grooves, and the first sealing plate, the second sealing plate and the third sealing plate can retract into the box body after a worker carries the box body indoors, so that the influence of the first sealing plate, the second sealing plate and the third sealing plate on the installation of the box body into the switch cabinet by the worker is reduced; when the box on the freight train needs to be carried indoors by the staff, the first sealing plate, the second sealing plate and the third sealing plate can be pulled out, and the sliding block can slide into the slot, so that the operation is convenient and fast.

Preferably, a first spring is arranged between the sliding block and the fixed groove, the first spring extends and retracts along the sliding direction of the sliding block, the slot penetrates through the outer side wall of the box body, a pressing block is arranged on one end, away from the fixed groove, of the inner side wall of the slot in a sliding mode, and the pressing block is used for pushing the sliding block into the fixed groove, so that the first sealing plate, the second sealing plate and the third sealing plate are released from being fixed; the pressing block is arranged on the slot, and the pressing block is used for sliding in the slot.

By adopting the technical scheme, the sliding block is automatically popped out through the first spring, so that the first sealing plate, the second sealing plate and the third sealing plate are automatically fixed in position when sliding to the specified height, and the operation of workers is facilitated; when the staff need be with first closing plate, second closing plate and third closing plate withdrawal in the box, the accessible pushes away the slider to the fixed slot in according to the piece to remove the slider and to the fixed of first closing plate, second closing plate and third closing plate position, made things convenient for staff's operation.

Preferably, the two ends of the storage shaft are respectively provided with a torsion spring, and the torsion springs are used for rolling up the sealing belt on the storage shaft; the second sealing plate is provided with a sealing strip in a rotating mode, and the sealing strip is used for clamping the sealing strip into the sealing groove and is abutted and attached to the inner side wall of the sealing groove.

By adopting the technical scheme, when workers need to carry the box body in rainy days, the sealing strip can be inserted into the sealing groove, and then the sealing strip is rotatably inserted into the sealing groove, so that the sealing strip is more tightly attached to the inner side wall of the sealing groove, and the sealing effect of the sealing strip is further enhanced; when the staff need install box to the cubical switchboard in, accessible torsional spring withdraws the sealing strip to accomodating the inslot automatically, has made things convenient for staff's operation.

Preferably, be provided with the diving board on first closing plate, second closing plate and the third closing plate lateral wall, still be provided with the spring groove on first closing plate, second closing plate and the third closing plate lateral wall, be provided with the second spring between diving board and the spring groove inner wall, the second spring is flexible along the degree of depth direction in spring groove, works as when the slider slides in the fixed slot, the diving board pops out under the effect of second spring, be provided with the protection ring on the diving board, the protection ring cover is established outside the second spring and is slided in the spring groove.

Through adopting above-mentioned technical scheme, when the staff lost one's hand and dropped the box, first closing plate, second closing plate and third closing plate at first contacted ground, and the diving board can play the cushioning effect to first closing plate, second closing plate and third closing plate, has reduced and has fallen and cause the probability of damage to first closing plate, second closing plate and third closing plate, has prolonged the life of first closing plate, second closing plate and third closing plate.

Preferably, be provided with the axis of rotation on the first closing plate, the axis of rotation extends along the length direction of first closing plate, first closing plate divide into two parts from the axis of rotation department, the axis of rotation makes first closing plate buckle towards the direction of keeping away from solid utmost point post that seals, makes simultaneously the diving board lateral wall is contradicted on the box lateral wall.

Through adopting above-mentioned technical scheme, when the staff need place the box on ground or on the freight train, accessible axis of rotation rotates first closing plate for first closing plate and box border simultaneously with ground contact, make the box perk, made things convenient for the staff to lift the box.

Preferably, the side wall of the box body far away from the solid-sealed polar pole is provided with a plurality of shallow grooves, one side of the box body far away from the solid-sealed polar pole is also provided with a plurality of deep grooves, the deep grooves and the shallow grooves are arranged in one-to-one correspondence, a connecting groove is arranged between the deep grooves and the shallow grooves, the deep groove is communicated with the shallow groove through a connecting groove, a first limiting groove extending along the depth direction of the shallow groove is arranged in the shallow groove, a second limiting groove extending along the depth direction of the deep groove is arranged in the deep groove, a third limiting groove is arranged between the first limiting groove and the second limiting groove, the third limiting groove passes through the connecting groove, the wheel shaft slides on the first limiting groove, the wheel shaft also slides in the second limiting groove and the third limiting groove, the wheel shaft is provided with a rotating wheel, the length of the first limiting groove is smaller than the rotating radius of the rotating wheel, and the length of the second limiting groove is larger than the rotating radius of the rotating wheel.

By adopting the technical scheme, when a worker carries the box body from the truck to the indoor, the wheel shaft can slide onto the first limiting groove, and the rotating wheel is in contact with the ground, so that the worker can push the box body on the ground more easily, and the worker can carry the box body conveniently; when the position of box was stabilized to staff's needs, can slide the shaft to the second spacing groove on, the deep inslot in runner place this moment for the box can be placed subaerial more steadily, has increased the stability of box.

Preferably, the box is kept away from and still is provided with the locking groove on one side of solid utmost point post that seals, it has the locking post to lock inslot, be provided with the third spring between locking post and the locking inslot lateral wall, the third spring is flexible along the degree of depth direction that locks the groove, the tip that the third spring was kept away from to the locking post is provided with logical groove, it has the locking piece to lead to inslot to slide, it is provided with the fourth spring to lead to between inslot lateral wall and the locking piece, the fourth spring is flexible along the slip direction of locking piece, the locking piece is used for detaining on the dolly lateral wall.

Through adopting above-mentioned technical scheme, when the box was placed on the dolly and is prepared to install into the cubical switchboard in, the staff can pull out the locking block earlier and detain on the dolly lateral wall for the box is more stable, has reduced the gliding probability of box on the dolly, has improved the stability of box.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the box body needs to be carried, the sealing strip can be pulled out of the containing shaft, then the sealing strip is pulled into the sealing groove, the sealing strip is clamped and fixed through the sealing groove, and the sealing strip is also attached and sealed with the third sealing plate, so that the sealing strip shields the solid-sealed polar pole, external rainwater is reduced from entering the solid-sealed polar pole from the solid-sealed polar pole, the solid-sealed polar pole is protected, and the waterproof effect of the solid-sealed polar pole is enhanced; when the box body is conveyed to a destination, the sealing belt can be pulled out of the sealing groove, and then the storage shaft is rotated to withdraw the sealing belt into the storage groove, so that the operation is convenient and rapid; when the worker loses hands and falls the box body on the ground, the first sealing plate, the second sealing plate and the third sealing plate can also play a role in protecting the solid-sealed polar pole, and the damage to the solid-sealed polar pole caused by falling is reduced.

2. The sliding block is automatically ejected out through the first spring, so that the first sealing plate, the second sealing plate and the third sealing plate are automatically fixed in position when sliding to the specified height, and the operation of workers is facilitated; when the staff need be with first closing plate, second closing plate and third closing plate withdrawal in the box, the accessible pushes away the slider to the fixed slot in according to the piece to remove the slider and to the fixed of first closing plate, second closing plate and third closing plate position, made things convenient for staff's operation.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a partially enlarged schematic view at a in fig. 1.

Fig. 3 is a schematic partial exploded view of fig. 1.

FIG. 4 is a partial schematic view highlighting the axis of rotation.

Fig. 5 is a schematic view showing the structure of the locking post.

Fig. 6 is a partially enlarged schematic view at B in fig. 5.

Fig. 7 is a schematic partial exploded view of fig. 5.

Description of reference numerals: 1. a box body; 11. solid-sealing the pole; 2. a first sealing plate; 21. a second sealing plate; 22. a third sealing plate; 23. a receiving groove; 24. a storage shaft; 25. sealing tape; 26. a sealing groove; 27. a torsion spring; 28. a sealing strip; 3. a chute; 31. a slot; 32. fixing grooves; 33. a slider; 34. a first spring; 35. according to blocks; 36. a guide groove; 37. a guide block; 4. a spring plate; 41. a spring slot; 42. a second spring; 43. a guard ring; 5. a rotating shaft; 51. shallow-groove; 52. deep grooves; 53. connecting grooves; 54. a first limit groove; 55. a second limit groove; 56. a third limiting groove; 57. a wheel axle; 58. a rotating wheel; 6. a locking groove; 61. a locking post; 62. a third spring; 63. a through groove; 64. a locking block; 65. and a fourth spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a vacuum circuit breaker with a protection function. Referring to fig. 1, the vacuum circuit breaker with the protection function comprises a box body 1, three solid-sealed poles 11 are installed on the box body 1, connecting pieces are installed on the end portions, far away from the box body 1, of the solid-sealed poles 11, and the connecting pieces are used for being conducted with circuits needing to be protected from the outside. Install first closing plate 2 and second closing plate 21 on the box 1, the length direction of first closing plate 2 and second closing plate 21 all extends along the length direction of box 1, and first closing plate 2 and second closing plate 21 all are located and seal 1 lateral wall of box at utmost point post 11 place admittedly, and first closing plate 2 and second closing plate 21 are located and seal 11 both sides admittedly, and first closing plate 2 is relative setting with second closing plate 21. Install two third closing plates 22 between first closing plate 2 and the second closing plate 21, the length direction of third closing plate 22 extends along the width direction of box 1, and third closing plate 22 is located the both sides of sealing utmost point post 11 admittedly, and two third closing plates 22 are relative setting, and first closing plate 2 lateral wall, second closing plate 21 lateral wall and two third closing plate 22 lateral walls will seal utmost point post 11 admittedly jointly and surround.

Referring to fig. 1 and 2, a receiving groove 23 is formed on a side wall of the first sealing plate 2 facing away from the box body 1, a length direction of the receiving groove 23 extends along a length direction of the first sealing plate 2, and a length of the receiving groove 23 is greater than a distance between the side walls of the two third sealing plates 22 opposite to each other. The storage groove 23 has storage shafts 24 rotating on both side walls in the longitudinal direction thereof, a seal tape 25 is wound around the storage shafts 24, one end of the seal tape 25 is fixedly connected to the storage shafts 24, and the seal tape 25 is pulled out from the storage shafts 24 to the second seal plate 21. Offer the seal groove 26 that is used for centre gripping sealing strip 25 on the second closing plate 21, the length direction of seal groove 26 extends along the length direction of second closing plate 21, installs two conflict strips that extend along the length direction of seal groove 26 in the seal groove 26, and sealing strip 25 centre gripping is between two conflict strips, and the conflict strip adopts flexible material to make in this embodiment, and sealing strip 25 lateral wall still seals with the lateral wall laminating of two third closing plates 22 dorsad box 1.

Referring to fig. 1 and 2, a torsion spring 27 is fixed around both ends of the storage shaft 24, the end of the torsion spring 27 abuts against the sidewall of the storage groove 23, and the torsion spring 27 is used to wind up the seal tape 25 on the storage shaft 24. It has sealing strip 28 to rotate on the second closing plate 21, and sealing strip 28 adopts flexible material to make in this embodiment, and sealing strip 28 is used for going into sealing strip 25 card seal groove 26, and when sealing strip 25 card goes into between two relative conflict strips, sealing strip 28 rotates and inserts between the conflict strip, and the laminating is contradicted with the conflict strip to sealing strip 28 lateral wall this moment, and sealing strip 28 lateral wall still contradicts the laminating with sealing strip 25, greatly increased sealing strip 25 and the pressure between the conflict strip.

Referring to fig. 1 and 3, spout 3 has still been seted up on box 1, spout 3 is to encircle the setting of three solid utmost point post 11 that seals, and be parallel to each other between the relative spout 3, first closing plate 2, second closing plate 21 and third closing plate 22 all slide in spout 3, the inside wall of spout 3 respectively with first closing plate 2, the laminating is contradicted to second closing plate 21 and third closing plate 22, the degree of depth direction of spout 3 extends along the slip direction of first closing plate 2, and the degree of depth of spout 3 is greater than the height of first closing plate 2, make in first closing plate 2 can slide into spout 3 completely. The slot 31 runs through on the 3 inside walls of spout, and the slot 31 runs through to the box 1 outside in the spout 3, has seted up fixed slot 32 on first closing plate 2, second closing plate 21 and the third closing plate 22 lateral wall, and the slot 31 is the one-to-one with fixed slot 32 and sets up and communicate.

Referring to fig. 1 and 3, a sliding block 33 slides in the fixing groove 32, a first spring 34 is installed between the sliding block 33 and the fixing groove 32, the first spring 34 extends and contracts along the sliding direction of the sliding block 33, the sliding block 33 is pushed by the first spring 34 in the direction away from the fixing groove 32, the sliding block 33 is used for sliding into the slot 31, and at this time, the sliding block 33 is simultaneously located in the fixing groove 32 and the slot 31, so that the positions of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are fixed. A pressing block 35 is slid on one end of the inner side wall of the slot 31 far away from the fixing groove 32, and the pressing block 35 is used for a worker to push the sliding block 33 into the fixing groove 32, so that the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are released. A guide groove 36 is formed in the inner side wall of the slot 31, the length direction of the guide groove 36 extends along the sliding direction of the pressing block 35, a guide block 37 inserted into and sliding in the guide groove 36 is installed on the pressing block 35, the guide groove 36 and the guide block 37 are used for limiting the sliding of the pressing block 35 in the slot 31, and the probability that the pressing block 35 is separated from the slot 31 is reduced.

Referring to fig. 1 and 3, the outer side walls of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are provided with the spring plate 4, the outer side walls of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are provided with the spring groove 41, the spring groove 41 extends along the width direction of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 where the spring groove is located, the second spring 42 is installed between the spring plate 4 and the inner wall of the spring groove 41, and the second spring 42 extends and retracts along the depth direction of the spring groove 41. The elastic plate 4 is further fixedly provided with a protection ring 43, the protection ring 43 is sleeved outside the second spring 42 and slides in the spring groove 41, and when the sliding block 33 slides into the slot 31, the elastic plate 4 is ejected under the action of the second spring 42. The outer side walls of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are further provided with a yielding groove, the yielding groove is used for embedding the elastic plate 4, and the elastic plate 4 can slide into the sliding groove 3 along with the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22.

Referring to fig. 1 and 4, a rotating shaft 5 is embedded on a side wall of the first sealing plate 2 facing away from the second sealing plate 21, an outermost side wall of the rotating shaft 5 is flush with a side wall of the first sealing plate 2 facing away from the second sealing plate 21, a length direction of the rotating shaft 5 extends along a length direction of the first sealing plate 2, and the first sealing plate 2 divides the first sealing plate 2 into two parts from the rotating shaft 5. The rotation shaft 5 bends the first sealing plate 2 towards the direction far away from the solid-sealed polar pole 11, and at the moment, the side wall of the elastic plate 4 close to the box body 1 is abutted against the outer side wall of the box body 1.

Referring to fig. 5 and 6, four shallow grooves 51 are formed in the side wall of the box body 1 far away from the solid-sealed polar pole 11, the four shallow grooves 51 are centrosymmetric to the four corners of the side wall of the box body 1, four deep grooves 52 are further formed in one side of the box body 1 far away from the solid-sealed polar pole 11, the deep grooves 52 correspond to the shallow grooves 51 one by one, four connecting grooves 53 are further formed in the side wall of the box body 1, and the deep grooves 52 are communicated with the shallow grooves 51 through the connecting grooves 53. Set up two first spacing grooves 54 that extend along the depth direction of shallow slot 51 on the shallow slot 51 inside wall, two first spacing grooves 54 are located the relative lateral wall of shallow slot 51 respectively, set up two second spacing grooves 55 that extend along the depth direction of deep groove 52 on the deep groove 52 inside wall, two second spacing grooves 55 are located the relative lateral wall of deep groove 52 respectively, third spacing groove 56 has been seted up on the relative lateral wall of spread groove 53, first spacing groove 54 is connected through third spacing groove 56 with second spacing groove 55, first spacing groove 54, second spacing groove 55 and third spacing groove 56 all are located the homonymy lateral wall.

Referring to fig. 6, two axles 57 slide on the first limiting grooves 54, the axles 57 also slide on the second limiting grooves 55 and the third limiting grooves 56, the axles 57 are fixed with rotating wheels 58, the axles 57 slide in the first limiting grooves 54, the second limiting grooves 55 and the third limiting grooves 56 and drive the rotating wheels 58 to rotate, the length of the first limiting grooves 54 is smaller than the rotating radius of the rotating wheels 58, so that when the axles 57 are in the first limiting grooves 54, the rotating wheels 58 partially extend out of the box body 1. The length of the second limit groove 55 is greater than the rotation radius of the runner 58, so that when the axle 57 is located in the second limit groove 55, the runner 58 is located in the deep groove 52.

Referring to fig. 1 and 7, locking groove 6 has still been seted up on one side of the solid utmost point post 11 that seals is kept away from to box 1, and locking groove 6 is located the position that the one end of keeping away from the center on the 1 diapire of box is close to the border, and the length direction who locks groove 6 extends along the thickness direction of the 1 lateral wall of box, and it has locking post 61 to slide in the locking groove 6, installs third spring 62 between locking post 61 and the locking groove 6 inside wall, and third spring 62 is flexible along the length direction who locks groove 6. The end portion of the locking column 61 far away from the third spring 62 is provided with a through groove 63, the length direction of the through groove 63 extends along the thickness direction of the locking column 61, a locking block 64 slides in the through groove 63, a fourth spring 65 is fixedly mounted on the inner side wall of the through groove 63 and the side wall of the locking block 64, the fourth spring 65 stretches along the sliding direction of the locking block 64, the fourth spring 65 pulls the locking block 64 towards the inside of the through groove 63, and the locking block 64 is used for being buckled on the side wall of the trolley.

The implementation principle of the vacuum circuit breaker with the protection function in the embodiment of the application is as follows: when the worker needs to transport the box body 1 indoors, the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are pulled out, and then the slider 33 is inserted into the slot 31 under the elastic force of the first spring 34, so that the positions of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 are fixed. The seal tape 25 is pulled out from the housing shaft 24, the seal tape 25 is inserted into the seal groove 26 and abutted against the abutment strips, and the seal tape 28 is rotated and inserted between the opposed abutment strips, so that the seal tape 25 covers the opening formed by the first seal plate 2, the second seal plate 21, and the third seal plate 22. When the worker carries the box body 1 indoors, the worker can firstly rotate the sealing strip 28 out of the sealing groove 26, then pull out the sealing strip 25, the sealing strip 25 is automatically wound on the accommodating shaft 24 under the action of the torsion spring 27, the worker pushes the sliding block 33 into the fixing groove 32 by pressing the pressing block 35, and the position fixing of the first sealing plate 2, the second sealing plate 21 and the third sealing plate 22 is released.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a take safeguard function's vacuum circuit breaker, including box (1), be provided with a plurality of solid utmost point posts (11), its characterized in that seal on box (1): a first sealing plate (2) and a second sealing plate (21) are arranged on the box body (1), the first sealing plate (2) and the second sealing plate (21) are arranged oppositely, a plurality of third sealing plates (22) are arranged between the first sealing plate (2) and the second sealing plate (21), the side wall of the first sealing plate (2), the side wall of the second sealing plate (21) and the side wall of the third sealing plate (22) surround the solid-sealed polar pole (11), the side wall of the first sealing plate (2) is provided with a receiving groove (23), a receiving shaft (24) is rotatably arranged on the side wall of the receiving groove (23), a sealing belt (25) is wound on the receiving shaft (24), one end of the sealing belt (25) is connected to the receiving shaft (24), the second sealing plate (21) is provided with a sealing groove (26) for clamping a sealing strip (25), the side wall of the sealing strip (25) is also in fit sealing with the third sealing plate (22).

2. The vacuum circuit breaker with protection function according to claim 1, characterized in that: the box body (1) is also provided with a sliding groove (3), the first sealing plate (2), the second sealing plate (21) and the third sealing plate (22) all slide in the sliding groove (3), the depth direction of the sliding groove (3) extends along the height direction of the first sealing plate (2), the depth of the sliding groove (3) is greater than the height of the first sealing plate (2), a slot (31) is arranged on the inner side wall of the sliding groove (3), the side walls of the first sealing plate (2), the second sealing plate (21) and the third sealing plate (22) are provided with fixing grooves (32), the slots (31) and the fixing grooves (32) are arranged in a one-to-one correspondence manner, and a sliding block (33) is arranged in the fixing groove (32) in a sliding manner, and the sliding block (33) is used for sliding into the slot (31) to fix the first sealing plate (2), the second sealing plate (21) and the third sealing plate (22).

3. The vacuum circuit breaker with protection function according to claim 2, characterized in that: a first spring (34) is arranged between the sliding block (33) and the fixed groove (32), the first spring (34) stretches along the sliding direction of the sliding block (33), the slot (31) penetrates through the outer side wall of the box body (1), a pressing block (35) slides on one end, away from the fixed groove (32), of the inner side wall of the slot (31), and the pressing block (35) is used for pushing the sliding block (33) into the fixed groove (32) so as to release the fixation of the first sealing plate (2), the second sealing plate (21) and the third sealing plate (22); a guide groove (36) is formed in the inner side wall of the slot (31), a guide block (37) which is used for sliding in the guide groove (36) is arranged on the pressing block (35), and the guide groove (36) and the guide block (37) are used for limiting the sliding of the pressing block (35) in the slot (31).

4. The vacuum circuit breaker with protection function according to claim 1, characterized in that: the two ends of the storage shaft (24) are respectively provided with a torsion spring (27), and the torsion springs (27) are used for rolling the sealing belt (25) on the storage shaft (24); it has sealing strip (28) to rotate on second closing plate (21), sealing strip (28) are used for going into sealing band (25) seal groove (26) to with the laminating of contradicting of seal groove (26) inside wall.

5. The vacuum circuit breaker with protection function according to claim 2, characterized in that: be provided with on first closing plate (2), second closing plate (21) and third closing plate (22) lateral wall and play board (4), still be provided with spring groove (41) on first closing plate (2), second closing plate (21) and third closing plate (22) lateral wall, be provided with second spring (42) between play board (4) and spring groove (41) inner wall, second spring (42) are flexible along the degree of depth direction of spring groove (41), work as when slider (33) slide in fixed slot (32), pop out under the effect of second spring (42) play board (4), be provided with protection ring (43) on play board (4), protection ring (43) cover is established outside second spring (42) and is slided in spring groove (41).

6. The vacuum circuit breaker with protection function according to claim 5, characterized in that: be provided with axis of rotation (5) on first closing plate (2), the length direction of axis of rotation (5) along first closing plate (2) extends, first closing plate (2) are divided into two parts from axis of rotation (5) punishment, axis of rotation (5) make first closing plate (2) buckle towards the direction of keeping away from solid utmost point post (11) of sealing, make simultaneously it contradicts on box (1) lateral wall to play board (4) lateral wall.

7. The vacuum circuit breaker with protection function according to claim 1, characterized in that: the side wall of the box body (1) far away from the solid-sealed polar pole (11) is provided with a plurality of shallow grooves (51), one side of the box body (1) far away from the solid-sealed polar pole (11) is also provided with a plurality of deep grooves (52), the deep grooves (52) and the shallow grooves (51) are arranged in a one-to-one correspondence manner, a connecting groove (53) is arranged between the deep grooves (52) and the shallow grooves (51), the deep grooves (52) are communicated with the shallow grooves (51) through the connecting groove (53), first limiting grooves (54) extending along the depth direction of the shallow grooves (51) are arranged in the shallow grooves (51), second limiting grooves (55) extending along the depth direction of the deep grooves (52) are arranged in the deep grooves (52), third limiting grooves (56) are arranged between the first limiting grooves (54) and the second limiting grooves (55), the third limiting grooves (56) pass through the connecting groove (53), and a wheel shaft (57) slides on the first limiting grooves (54), the wheel shaft (57) also slides in the second limiting groove (55) and the third limiting groove (56), the wheel shaft (57) is provided with a rotating wheel (58), the length of the first limiting groove (54) is smaller than the rotating radius of the rotating wheel (58), and the length of the second limiting groove (55) is larger than the rotating radius of the rotating wheel (58).

8. The vacuum circuit breaker with protection function according to claim 1, characterized in that: box (1) is kept away from and still is provided with locking groove (6) on one side of sealing utmost point post (11) admittedly, it has lock post (61) to slide in locking groove (6), be provided with third spring (62) between lock post (61) and locking groove (6) inside wall, the degree of depth direction that locking groove (6) was followed in third spring (62) is flexible, the tip that third spring (62) were kept away from in lock post (61) is provided with logical groove (63), it has locking block (64) to slide in logical groove (63), it is provided with fourth spring (65) to lead to between groove (63) inside wall and locking block (64), fourth spring (65) are flexible along the slip direction of locking block (64), locking block (64) are used for detaining on the dolly lateral wall.