CN214753607U

CN214753607U - Spring operating mechanism applied to circuit breaker and circuit breaker

Info

Publication number: CN214753607U
Application number: CN202121182952.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Jincheng Xiang Xiang Science And Technology Electric Appliance Co ltd
Current assignee: Jincheng Xiang Xiang Science And Technology Electric Appliance Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-11-16
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a spring operating mechanism and a breaker which are applied to the breaker; the method comprises the following steps: the device comprises a mounting plate, an eccentric flywheel, a turntable, a driving cam, a connecting rod, a connecting lever, a closing spring and an opening spring; the eccentric flywheel is connected to the mounting plate through rotation, the turntable is arranged between the eccentric flywheel and the mounting plate, and the driving cam is arranged in a cavity of the turntable; the eccentric flywheel rotates to realize the energy storage and release of a closing spring; the eccentric flywheel drives the turntable to rotate through the first shifting block, and the turntable drives the driving cam to rotate through the second shifting block, so that the energy storage and the energy release of the brake separating spring are realized. The distance between the eccentric flywheel and the mounting plate is the integral distance of the spring operating mechanism, and the vertical distance between the eccentric flywheel and the mounting plate is easily designed to be smaller than 100mm, so that the insulation distance between phase sequences in the switch cabinet can be ensured. Meanwhile, the device has the characteristics of simple structure, material saving, long service life, convenience in disassembly, assembly and replacement, high reliability and the like.

Description

Spring operating mechanism applied to circuit breaker and circuit breaker

Technical Field

The utility model relates to a circuit breaker technical field, concretely relates to be applied to spring operating device and circuit breaker of circuit breaker.

Background

The arrangement mode of common air insulated switchgear buses is arranged from left to right, and in order to reduce the volume of the switchgear, the left-right arrangement of the buses needs to be changed into front-back arrangement. The buses are arranged in a front-back manner, firstly, the insulation distance between each phase sequence is ensured, and the thickness of the spring operating mechanism is only 100mm on the premise that the air insulation national standard is met.

At present, the spring operating mechanism is generally driven by gears and adopts a stacked structure, so that the volume of the spring operating mechanism is large, the thickness of the spring operating mechanism is about 300mm, and the use requirement of a small-size switch cabinet cannot be met.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the relatively thick defect of spring operating mechanism's volume among the prior art to a spring operating mechanism and circuit breaker of very thin book that is applied to vacuum circuit breaker's spring operation divide-shut brake and uses is provided.

In order to solve the technical problem, the utility model provides a be applied to spring operating mechanism of circuit breaker, include:

the eccentric flywheel is rotatably connected to the mounting plate through a first rotating shaft, and an arc-shaped through hole is formed in the circumferential direction of the eccentric flywheel;

the rotating disc is positioned between the eccentric flywheel and the mounting plate, and is rotatably sleeved on the first rotating shaft; a first shifting block is arranged on one side of the rotary table facing the eccentric flywheel, at least part of the first shifting block is embedded into the arc-shaped through hole, and the arc length of the first shifting block is smaller than that of the arc-shaped through hole; the rotary table is provided with a cavity with an opening at one end, and the opening is formed towards the mounting plate;

the driving cam is positioned in the cavity of the rotating disc and is rotationally connected to the first rotating shaft;

one end of the connecting rod is rotatably connected to a crank arm of the output shaft of the circuit breaker, and the other end of the connecting rod is rotatably connected to the driving cam;

one end of the closing spring is connected to the upper end of the mounting plate, and the other end of the closing spring is connected to the eccentric flywheel;

one end of the opening spring is connected to the lower end of the mounting plate, and the other end of the opening spring is arranged on the driving cam;

a second shifting block is connected in a cavity of the rotary table and is suitable for being in rotational contact with the driving cam, and the second shifting block has a driving state of pushing the driving cam to rotate and a tripping state of not being in contact with the driving cam;

wherein the vertical distance between the eccentric flywheel and the mounting plate is less than 100 mm.

Preferably, the driving cam is rotatably connected to the first rotating shaft through a transition piece, and the transition piece is provided with a first extending arm and a second extending arm which extend out of the cavity of the rotating disc;

the connecting rod is connected with the first extending arm in a rotating mode, and the brake separating spring is connected with the second extending arm.

As a preferred scheme, the second shifting block is rotationally connected to the turntable through a second rotating shaft, and the second rotating shaft is connected with a shifting lever; further comprising:

the first torsion spring is sleeved on the second rotating shaft, one end of the first torsion spring is connected to the rotating disc, the other end of the first torsion spring is connected to the driving cam, and the first torsion spring provides a holding force for enabling the second shifting block to be in contact and abutted with the driving cam;

and the first limiting part is rotatably connected to the mounting plate and is suitable for blocking the shifting rod in a contact manner.

Preferably, the method further comprises the following steps:

and one end of the first limiting column is connected to the turntable, and the other end of the first limiting column extends to the mounting plate and is suitable for blocking one side of the shifting lever, which deviates from the driving cam.

Preferably, the method further comprises the following steps:

the electric lock hanging plate is connected to the periphery of the eccentric flywheel and is provided with a hanging connection end extending outwards;

and the second limiting part is rotatably connected to the mounting plate and is provided with a groove suitable for accommodating the hanging end.

As preferred scheme, it has first fender end and second fender end to stretch out on the outer fringe of carousel, still includes:

the second limiting column is connected to the mounting plate and located between the first blocking end and the second blocking end, and the rotary disc is suitable for rotating and blocking the second limiting column.

Preferably, the eccentric flywheel is provided with a through hole for accommodating the second limit column.

Preferably, the method further comprises the following steps:

the limiting hole is arranged on the outer edge of the turntable;

the locking shaft is connected to the second limiting column in a sliding mode, and part of the locking shaft is suitable for being inserted into the limiting hole in a sliding mode;

one end of the second torsion spring penetrates through the locking shaft and is connected to the connecting rod, the other end of the second torsion spring is connected to the mounting plate, and the second torsion spring provides a holding force for enabling the locking shaft to be inserted into the limiting hole.

Preferably, the method further comprises the following steps:

one end of the first telescopic rod is rotatably connected to the mounting plate, and the other end of the first telescopic rod is rotatably connected to the eccentric flywheel; the closing spring is sleeved on the first telescopic rod and is abutted and fixed with two ends of the first telescopic rod;

one end of the second telescopic rod is rotatably connected to the mounting plate, and the other end of the second telescopic rod is rotatably connected to the driving cam; and the opening spring is sleeved on the second telescopic rod and is fixedly connected with two ends of the second telescopic rod in an abutting mode.

Preferably, the method further comprises the following steps:

the electric screw rod is arranged on the mounting plate, a stroke nut capable of moving up and down is arranged on the electric screw rod, and the stroke nut is suitable for being in contact connection with the eccentric flywheel.

A circuit breaker comprises the spring operating mechanism applied to the circuit breaker in any one of the above aspects.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a be applied to spring operating device of circuit breaker, first pivot drive eccentric flywheel rotates, realizes closing spring compression energy storage, promptly the separating brake energy storage; meanwhile, the eccentric flywheel stirs the turntable to rotate, and a second shifting block in the turntable rotates along with the turntable; when the switching-on spring releases the energy, the second shifting block rotates reversely along with the turntable to push the driving cam to rotate, the driving cam drives the connecting rod and the connecting lever to rotate, switching-on action is realized, and meanwhile, the switching-off spring compresses and stores energy; under the action of the restoring force of the opening spring, the driving cam drives the crank arm to rotate to realize opening action; because the arc length of the first shifting block is smaller than that of the arc-shaped through hole, the eccentric flywheel can realize compression energy storage in a closing state, and reclosing can be quickly realized when a line fault trips; the closing spring and the opening spring are distributed up and down, the distance between the eccentric flywheel and the mounting plate is the integral distance of the spring operating mechanism, the vertical distance between the eccentric flywheel and the mounting plate is easily designed to be smaller than 100mm, and the thickness of the eccentric flywheel is thinner, so that the insulation distance between phase sequences in the switch cabinet can be ensured. Meanwhile, the device has the characteristics of simple structure, material saving, long service life, convenience in disassembly, assembly and replacement, high reliability and the like.

2. The utility model provides a be applied to spring operating device of circuit breaker, the setting of the first cantilever arm on the transition piece and the second cantilever arm is convenient for realize connecting rod and separating brake spring and drive cam's being connected, simple to operate.

3. The utility model provides a be applied to spring operating device of circuit breaker blocks through first locating part and driving lever contact, adjusts the angle of second shifting block, realizes the contact of second shifting block and drive cam and breaks away from; the first limiting piece is matched with the shifting rod to provide a holding force of a closing state.

4. The utility model provides a be applied to spring operating device of circuit breaker, first spacing post carries on spacingly to the driving lever, avoids the driving lever corner too big, and not receive the control of first locating part.

5. The utility model provides a be applied to spring operating device of circuit breaker, the cooperation of electric lock link plate and second locating part makes closing spring can keep the energy storage state.

6. The utility model provides a be applied to spring operating device of circuit breaker, the carousel blocks through first end, the second of blockking and holds the realization to rotate spacingly, and then realizes spacing the rotation of drive cam indirectly through the second shifting block.

7. The utility model provides a be applied to spring operating device of circuit breaker through the rotation of connecting rod, makes locking axle and spacing hole grafting cooperation, realizes spacing to the accuracy of carousel, and it is further spacing to the combined floodgate state of mechanism promptly.

8. The utility model provides a be applied to spring operating device of circuit breaker, the setting of first telescopic link and second telescopic link avoids combined floodgate spring and separating brake spring to appear buckling phenomenon in the use, and influences normal divide-shut brake function.

Drawings

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

Fig. 1 is an exploded view of a spring operating mechanism for a circuit breaker according to the present invention.

Fig. 2 is a first schematic structural diagram of a spring operating mechanism applied to a circuit breaker in an opening state.

Fig. 3 is a second schematic structural diagram of a spring operating mechanism applied to a circuit breaker in an open state.

Fig. 4 is a third schematic structural diagram of a spring operating mechanism applied to a circuit breaker in an opening state.

Fig. 5 is a first structural schematic diagram of a spring operating mechanism applied to a circuit breaker in an opening energy storage state.

Fig. 6 is a second schematic structural diagram of a spring operating mechanism applied to a circuit breaker in an open-circuit energy storage state.

Fig. 7 is a third schematic structural diagram of a spring operating mechanism applied to a circuit breaker in an opening energy storage state.

Fig. 8 is a first schematic structural diagram of a spring operating mechanism applied to a circuit breaker in a closing state.

Fig. 9 is a second schematic structural diagram of a spring operating mechanism applied to a circuit breaker in a closed state.

Fig. 10 is a third schematic structural view of a spring operating mechanism applied to a circuit breaker in a closed state.

Fig. 11 is a schematic structural diagram of a spring operating mechanism applied to a circuit breaker in a closing energy storage state.

Description of reference numerals:

1. mounting a plate; 2. an eccentric flywheel; 3. a drive cam; 4. a connecting rod; 5. a crank arm; 6. a closing spring; 7. a brake separating spring; 8. an electric lock hanging plate; 9. a second limiting member; 10. a first rotating shaft; 11. a first tray body; 12. a second tray body; 13. a first shifting block; 14. a second limit post; 15. a first blocking end; 16. a second blocking end; 17. a limiting hole; 18. a locking shaft; 19. connecting columns; 20. a second torsion spring; 21. a transition piece; 22. a first projecting arm; 23. a second projecting arm; 24. a second telescopic rod; 25. a first telescopic rod; 26. a second shifting block; 27. a second rotating shaft; 28. a deflector rod; 29. a first torsion spring; 30. an eccentric notch; 31. a first limit piece; 32. a first limit post; 33. and (5) perforating holes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The divide-shut brake spring 6 operating device that this embodiment provided includes: the device comprises a mounting plate 1, an eccentric flywheel 2, a turntable, a driving cam 3, a connecting rod 4, a crank arm 5, a closing spring 6 and an opening spring 7; wherein the vertical distance between the eccentric flywheel 2 and the mounting plate 1 is less than 100 mm.

As shown in fig. 1 and 2, the eccentric flywheel 2 is a sector structure, and the eccentric flywheel 2 is rotatably connected to the mounting plate 1 through a first rotating shaft 10; the outer circumference of the eccentric flywheel 2 is connected with an electric lock hanging plate 8, and the electric lock hanging plate 8 is provided with a hanging end extending outwards. The left side below of mounting panel 1 rotates and is connected with second locating part 9, the recess has on the second locating part 9, electricity lock link plate 8 can through rotate, with the recess of second locating part 9 articulates and stops.

As shown in fig. 1 and fig. 3, the turntable is located between the eccentric flywheel 2 and the mounting plate 1, and is rotatably sleeved on the first rotating shaft 10; the rotary table comprises a first table body 11 and a second table body 12 which are mutually buckled, and an annular cavity is formed in the rotary table; first disk body 11 is close to eccentric flywheel 2 sets up, the orientation of first disk body 11 first shifting block 13 has on one side of eccentric flywheel 2, the last arc through-hole that has of eccentric flywheel 2, first shifting block 13 embedding in the arc through-hole, just the arc length of first shifting block 13 is less than the arc length of arc through-hole. A first blocking end 15 and a second blocking end 16 extend out of the outer edge of the first disc body 11, a second limiting column 14 is vertically connected to the mounting plate 1, the second limiting column 14 is located between the first blocking end 15 and the second blocking end 16, and the second limiting column 14 is used for limiting the rotation angle of the rotary disc; a through hole 35 is formed in the eccentric flywheel 2, and the second limiting column 14 is accommodated in the through hole 35; the through hole 35 is arranged to enable the rotary table to be in close contact with the eccentric flywheel 2, so that an accommodating space does not need to be reserved for the second limiting column 14, and the whole thickness of the rotary table and the eccentric flywheel 2 is further reduced. A limiting hole 17 is formed in the outer edge of the first tray body 11, and the limiting hole 17 is arranged close to the first blocking end 15; a locking shaft 18 is slidably inserted into the second limiting column 14, and the locking shaft 18 can slidably penetrate through the second limiting column 14 and be inserted into the limiting hole 17; a connecting column 19 is vertically arranged on the mounting plate 1, a second torsion spring 20 is sleeved on the connecting column 19, one end of the second torsion spring 20 penetrates through the locking shaft 18 and is connected to the connecting rod 4, and the other end of the second torsion spring 20 is connected to the connecting column 19; the connecting rod 4 rotates to drive the locking shaft 18 to be inserted into and separated from the limiting hole 17.

As shown in fig. 1 and 4, the driving cam 3 is arranged in the turntable, the driving cam 3 is fixedly sleeved on the transition piece 21, and the transition piece 21 is rotatably sleeved on the first rotating shaft 10; the second tray body 12 has an opening in the center thereof, a portion of the transition piece 21 extends out of the turntable through the opening, and the transition piece 21 has first and second extending

arms

22 and 23 arranged at an angle in the circumferential direction. One end of the connecting rod 4 is rotatably connected to the first extending arm 22, and the other end of the connecting rod is rotatably connected to the crank arm 5 of the output shaft of the circuit breaker; one end of a second telescopic rod 24 is rotatably connected to the second extending arm 23, and the other end of the second telescopic rod is downwardly and rotatably connected to the mounting plate 1; the opening spring 7 is sleeved on the second telescopic rod 24, and two ends of the opening spring 7 are respectively abutted and fixed with two ends of the second telescopic rod 24. A lifting lug extends outwards from the right side of the eccentric flywheel 2, one end of a first telescopic rod 25 is rotatably connected to the lifting lug, and the other end of the first telescopic rod 25 is upwardly and rotatably connected to the mounting plate 1; the closing spring 6 is sleeved on the first telescopic rod 25, and two ends of the closing spring 6 are respectively abutted and fixed with two ends of the first telescopic rod 25.

As shown in fig. 1 and 4, a second shifting block 26 is arranged in the rotary table, the second shifting block 26 is connected to the second table body 12 through a second rotating shaft 27, and a shifting lever 28 is connected to one end of the second rotating shaft 27, which extends out of the rotary table; a first torsion spring 29 is sleeved on the second rotating shaft 27, one end of the first torsion spring 29 is connected to the second tray body 12, and the other end of the torsion spring is connected to the transition piece 21; the edge of the driving cam 3 is provided with an eccentric notch 30, and the second shifting block 26 can be contacted and abutted with the eccentric notch 30 through rotation. The right lower side of the mounting plate 1 is rotatably provided with a first limiting member 31, and the first limiting member 31 is contacted with the shift lever 28 to be blocked through rotation. A first limiting column 32 is vertically connected to one side of the first disk 11 facing the mounting plate 1, and blocks one side of the shift lever 28 facing away from the driving cam 3.

As shown in fig. 2, 3 and 4, the closing spring 6 and the opening spring 7 are both in the energy releasing state in the opening state. The locking shaft 18 is not inserted into the limiting hole 17, and the eccentric flywheel 2 can drive the turntable to rotate through the first shifting block 13; the second shift block 26 does not abut against the eccentric notch 30 of the driving cam 3, so the second shift block 26 cannot push the driving cam 3 to rotate.

As shown in fig. 5, 6 and 7, the closing spring 6 is in a compressed energy storage state and the opening spring 7 is in a released energy state for opening pre-energy storage state. An annular tooth-shaped groove is formed in one end face, away from the mounting plate 1, of the first rotating shaft 10, and a special operating wrench is suitable for being inserted into the tooth-shaped groove; the eccentric flywheel 2 is driven to rotate anticlockwise through the rotation of the first rotating shaft 10, and the closing spring 6 realizes upward compression and energy storage; the position of the eccentric flywheel 2 is limited by hanging the electric lock hanging plate 8 and the second limiting part 9. In the energy storage process of the closing spring 6, the rotation is stirred to rotate anticlockwise, so that the second stirring block 26 is in contact and abutting contact with the eccentric notch 30 of the driving cam 3.

As shown in fig. 8, 9 and 10, in the closing state, the opening spring 7 is in the compressed energy storage state, and the closing spring 6 is in the energy release state. The second limiting part 9 rotates to contact with the electric lock hanging plate 8 to block, so that the eccentric flywheel 2 is reset clockwise; the eccentric flywheel 2 stirs the rotation to rotate clockwise, and then the second stirring block 26 stirs the driving cam 3 to rotate clockwise; the second extending arm 23 swings downwards, so that the opening spring 7 is compressed downwards to store energy; the first extending arm 22 swings upwards, so that the connecting rod 4 drives the connecting lever 5 to swing anticlockwise, and closing is achieved. In the process of anticlockwise rotating of the connecting rod 4, the second torsion spring 20 is driven to push the locking shaft 18 to extend into the limiting hole 17, so that the turntable is locked.

As shown in fig. 11, in order to be in a closing pre-energy-storage state, i.e. a reclosing state, both the closing spring 6 and the opening spring 7 are in a compressed energy-storage state. From the closing state of fig. 8 to the closing pre-stored energy state of fig. 11, the first rotating shaft 10 is driven to drive the eccentric flywheel 2 to rotate counterclockwise; the eccentric flywheel 2 does not stir the turntable to rotate in the rotating process.

As an alternative embodiment, the eccentric flywheel 2 can be rotated by electric drive; an electric screw rod is arranged on the mounting plate 1, a stroke nut capable of moving up and down is arranged on the electric screw rod, and the stroke nut is in contact and butt joint with the electric lock hanging plate 8; the travel nut is driven to move through the electric lead screw, and then the electric lock hanging plate 8 is driven to rotate.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. Be applied to spring operating mechanism of circuit breaker, its characterized in that includes:

the eccentric flywheel (2) is rotatably connected to the mounting plate (1) through a first rotating shaft (10), and an arc-shaped through hole is formed in the circumferential direction of the eccentric flywheel (2);

the rotary table is positioned between the eccentric flywheel (2) and the mounting plate (1), and is rotatably sleeved on the first rotating shaft (10); a first shifting block (13) is arranged on one side of the rotating disc, which faces the eccentric flywheel (2), at least part of the first shifting block (13) is embedded into the arc-shaped through hole, and the arc length of the first shifting block (13) is smaller than that of the arc-shaped through hole; the rotary table is provided with a cavity with an opening at one end, and the opening is formed towards the mounting plate (1);

the driving cam (3) is positioned in the cavity of the rotary table and is rotatably connected to the first rotating shaft (10);

one end of the connecting rod (4) is rotatably connected to a crank arm (5) of the output shaft of the circuit breaker, and the other end of the connecting rod is rotatably connected to the driving cam (3);

one end of the closing spring (6) is connected to the upper end of the mounting plate (1), and the other end of the closing spring is connected to the eccentric flywheel (2);

one end of the opening spring (7) is connected to the lower end of the mounting plate (1), and the other end of the opening spring is arranged on the driving cam (3);

a second shifting block (26) is connected in a cavity of the rotary table, the second shifting block (26) is suitable for being in rotational contact with the driving cam (3), and the second shifting block (26) has a driving state for pushing the driving cam (3) to rotate and a tripping state not in contact with the driving cam (3).

2. The spring operating mechanism applied to the circuit breaker according to claim 1, wherein the driving cam (3) is rotatably connected to the first rotating shaft (10) through a transition piece (21), and the transition piece (21) is provided with a first protruding arm (22) and a second protruding arm (23) which protrude out of the cavity of the rotating disc;

the connecting rod (4) is rotatably connected with the first extending arm (22), and the opening spring (7) is connected with the second extending arm (23).

3. The spring operating mechanism applied to the circuit breaker according to claim 1, wherein the second shifting block (26) is rotatably connected to the rotary plate through a second rotating shaft (27), and a shifting lever (28) is connected to the second rotating shaft (27); further comprising:

the first torsion spring (29) is sleeved on the second rotating shaft (27), one end of the first torsion spring (29) is connected to the rotating disc, the other end of the first torsion spring (29) is connected to the driving cam (3), and the first torsion spring (29) provides a holding force for enabling the second shifting block (26) to be in contact and abutted with the driving cam (3);

the first limiting piece (31) is rotatably connected to the mounting plate (1) and is suitable for blocking the shifting rod (28) in a contact mode.

4. The spring operating mechanism applied to the circuit breaker according to claim 3, further comprising:

one end of the first limiting column is connected to the rotary disc, and the other end of the first limiting column extends to the mounting plate (1) and is suitable for blocking one side of the shifting rod (28) departing from the driving cam (3).

5. The spring operating mechanism applied to the circuit breaker according to claim 1, further comprising:

the electric lock hanging plate (8) is connected to the circumferential direction of the eccentric flywheel (2), and the electric lock hanging plate (8) is provided with a hanging connection end extending outwards;

the second limiting piece (9) is rotatably connected to the mounting plate (1), and the second limiting piece (9) is provided with a groove suitable for accommodating the hanging end.

6. The spring operating mechanism applied to the circuit breaker according to claim 1, wherein a first blocking end (15) and a second blocking end (16) are protruded from an outer edge of the rotary plate, further comprising:

the second limiting column (14) is connected to the mounting plate (1) and located between the first blocking end (15) and the second blocking end (16), and the rotary disc is suitable for being blocked by the second limiting column (14) in a rotating mode.

7. The spring operating mechanism applied to the circuit breaker as claimed in claim 6, wherein the eccentric flywheel (2) is provided with a through hole (33) for accommodating the second limit post (14).

8. The spring operating mechanism applied to the circuit breaker according to claim 6, further comprising:

the limiting hole (17) is arranged on the outer edge of the turntable;

a locking shaft (18) slidably connected to the second restraint post (14), a portion of the locking shaft (18) being adapted to be slidably inserted into the restraint hole (17);

and one end of the second torsion spring (20) penetrates through the locking shaft (18) and is connected to the connecting rod (4), the other end of the second torsion spring is connected to the mounting plate (1), and the second torsion spring (20) provides a holding force for inserting the locking shaft (18) into the limiting hole (17).

9. The spring operating mechanism applied to the circuit breaker according to claim 1, further comprising:

one end of the first telescopic rod (25) is rotatably connected to the mounting plate (1), and the other end of the first telescopic rod is rotatably connected to the eccentric flywheel (2); the closing spring (6) is sleeved on the first telescopic rod (25) and is fixedly abutted against two ends of the first telescopic rod (25);

one end of the second telescopic rod (24) is rotatably connected to the mounting plate (1), and the other end of the second telescopic rod is rotatably connected to the driving cam (3); the opening spring (7) is sleeved on the second telescopic rod (24) and is fixedly connected with two ends of the second telescopic rod (24) in an abutting mode.

10. A circuit breaker comprising a spring operated mechanism as claimed in any one of claims 1 to 9 applied to a circuit breaker.