CN113327814B

CN113327814B - Spring operating mechanism applied to circuit breaker and circuit breaker

Info

Publication number: CN113327814B
Application number: CN202110594229.2A
Authority: CN
Inventors: 请求不公布姓名
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: 2024-03-08
Anticipated expiration: 2041-05-28
Also published as: CN113327814A

Abstract

The invention provides a spring operating mechanism applied to a circuit breaker and the circuit breaker; comprising the following steps: the device comprises a mounting plate, an eccentric flywheel, a turntable, a driving cam, a connecting rod, a crank arm, a closing spring and a separating 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 energy storage and energy release of the closing spring; the eccentric flywheel drives the rotary table to rotate through the first shifting block, and the rotary table drives the driving cam to rotate through the second shifting block, so that energy storage and 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 easy to design to be smaller than 100mm, so that the insulation distance between each phase sequence in the switch cabinet can be ensured. Meanwhile, the device has the characteristics of simple structure, material saving, long service life, convenient disassembly, assembly and replacement, high reliability and the like.

Description

Spring operating mechanism applied to circuit breaker and circuit breaker

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a spring operating mechanism applied to a circuit breaker and the circuit breaker.

Background

The common arrangement mode of the bus bars of the air-insulated switchgear is from left to right, and in order to reduce the size of the switchgear, the left-right arrangement of the bus bars is required to be changed into front-back arrangement. The buses are arranged front and back, the insulation distance between each phase sequence is ensured, and the thickness of the spring operating mechanism is only 100mm on the premise of meeting the national standard of air insulation.

In order to ensure that the spring operating mechanism can smoothly realize the actions of energy storage, closing and opening, the inside of the existing spring operating mechanism is generally provided with a plurality of gears for mutual transmission, and meanwhile, the spring operating mechanism of the whole circuit breaker is formed by matching with springs and swing arm elements, so that the whole size and the whole size are huge, and the cabinet size of the circuit breaker is huge, and the requirements of the existing electrical appliance system are more and more difficult to meet.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect of thicker volume of the spring operating mechanism in the prior art, so as to provide a very thin spring operating mechanism and a circuit breaker applied to the spring-operated opening and closing of a vacuum circuit breaker.

In order to solve the technical problem, the spring operating mechanism applied to the circuit breaker provided by the invention comprises:

the first rotating shaft is rotatably arranged on the mounting plate, the exposed end of the first rotating shaft is provided with a key tooth structure suitable for inserting a crank of the circuit breaker, and the first rotating shaft is provided with a catch tooth;

the eccentric flywheel is rotationally connected to the mounting plate through a first rotating shaft, an arc-shaped through hole is formed in the circumferential direction of the eccentric flywheel, and a groove suitable for accommodating the catch tooth is formed in the eccentric flywheel;

the rotary disc is positioned between the eccentric flywheel and the mounting plate, and is rotationally sleeved on the first rotating shaft; a first shifting block (13) is arranged on one side of the rotary disc, which faces 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 cavity with one end open of the turntable is provided with an opening facing the mounting plate;

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

one end of the connecting rod is rotationally connected to the crank arm of the output shaft of the circuit breaker, and the other end of the connecting rod is rotationally 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 brake separating spring is connected to the lower end of the mounting plate, and the other end of the brake separating spring is arranged on the driving cam;

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

the eccentric flywheel, the rotary table and the driving cam are installed on the first rotating shaft in a stacked mode, the first rotating shaft is vertically installed on the mounting plate, and the connecting rod, the closing spring and the opening spring are installed in parallel with the mounting plate.

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 turntable;

the connecting rod is rotationally connected with the first extending arm, and the brake separating spring is connected with the second extending arm.

As a preferable scheme, the second shifting block is rotationally connected to the rotary table through a second rotating shaft, and a shifting rod is connected to the second rotating shaft; further comprises:

the first torsion spring is sleeved on the second rotating shaft, one end of the first torsion spring is connected to the rotary table, 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 abutting connection with the driving cam;

the first limiting piece is rotationally connected to the mounting plate and is suitable for blocking the deflector rod in a contact manner.

Preferably, the method further comprises:

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 deflector rod, which is away from the driving cam.

Preferably, the method further comprises:

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

the second limiting piece is rotationally connected to the mounting plate and provided with an abutting surface suitable for blocking the hanging end.

As a preferred scheme, stretch out on the outer fringe of carousel and have first blocking end and second blocking end, still include:

the second limiting column is connected with the mounting plate and located between the first blocking end and the second blocking end, and the rotary table is suitable for being blocked by the second limiting column in a rotary mode.

Preferably, the eccentric flywheel is provided with a penetrating hole for accommodating the second limiting post.

Preferably, the method further comprises:

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 manner, and part of the locking shaft is suitable for being inserted into the limiting hole in a sliding manner;

and 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 retaining force for enabling the locking shaft to be inserted into the limiting hole.

Preferably, the method further comprises:

one end of the first telescopic rod is rotationally connected to the mounting plate, and the other end of the first telescopic rod is rotationally connected to the eccentric flywheel; the closing spring is sleeved on the first telescopic rod and is in abutting connection and fixation with two ends of the first telescopic rod;

one end of the second telescopic rod is rotationally connected to the mounting plate, and the other end of the second telescopic rod is rotationally connected to the driving cam; the brake separating spring is sleeved on the second telescopic rod and is fixedly abutted to two ends of the second telescopic rod.

Preferably, the method further comprises:

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

A circuit breaker comprising a spring operated mechanism according to any one of the above schemes applied to a circuit breaker.

The technical scheme of the invention has the following advantages:

1. the spring operating mechanism applied to the circuit breaker provided by the invention has the advantages that the first rotating shaft drives the eccentric flywheel to rotate, so that the compression energy storage of the closing spring, namely the opening energy storage, is realized; simultaneously, the eccentric flywheel toggles the turntable to rotate, and a second shifting block in the turntable rotates along with the turntable; when the closing spring releases the quantity, the second shifting block reverses along with the turntable to push the driving cam to rotate, the driving cam drives the connecting rod and the crank arm to rotate, closing action is realized, and meanwhile, the opening spring compresses and stores energy; under the action of the restoring force of the brake separating spring, the driving cam drives the crank arm to rotate so as to realize brake separating 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 realized rapidly when a circuit fault trips; the eccentric flywheel, the rotary table and the driving cam are installed on the first rotating shaft in a stacked mode, the first rotating shaft is vertically installed on the mounting plate, and the connecting rod, the closing spring and the opening spring are installed in parallel with the mounting plate. Therefore, the vertical distance from the eccentric flywheel to the mounting plate is easy to design to be smaller than 100mm, and the thickness is reduced, so that the volume of the switch cabinet can be reduced while the insulation distance between each phase sequence in the switch cabinet is ensured.

2. The spring operating mechanism applied to the circuit breaker is convenient for connecting the connecting rod, the brake separating spring and the driving cam by arranging the first extending arm and the second extending arm on the transition piece, and is convenient to install.

3. According to the spring operating mechanism applied to the circuit breaker, the first limiting piece is in contact with the deflector rod to block, and the angle of the second deflector block is adjusted, so that the contact and separation between the second deflector block and the driving cam are realized; the first limiting piece is matched with the deflector rod to provide a holding force of a closing state.

4. The spring operating mechanism applied to the circuit breaker provided by the invention has the advantages that the first limiting column limits the deflector rod, so that the excessive rotation angle of the deflector rod is avoided, and the deflector rod is not controlled by the first limiting piece.

5. According to the spring operating mechanism applied to the circuit breaker, the electric lock hanging plate is matched with the second limiting piece, so that the closing spring can be kept in an energy storage state.

6. According to the spring operating mechanism applied to the circuit breaker, the rotary table realizes rotation limit through the first blocking end and the second blocking end, and further realizes rotation limit of the driving cam indirectly through the second shifting block.

7. According to the spring operating mechanism applied to the circuit breaker, the locking shaft is in plug-in fit with the limiting hole through rotation of the connecting rod, so that accurate limiting of the rotary disc is achieved, namely the closing state of the mechanism is further limited.

8. The spring operating mechanism applied to the circuit breaker provided by the invention has the advantages that the arrangement of the first telescopic rod and the second telescopic rod can avoid the phenomenon that the switching-on spring and the switching-off spring are bent in the use process, so that the normal switching-on and switching-off functions are influenced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a spring operated mechanism applied to a circuit breaker provided in the present invention.

Fig. 2 is a schematic structural view of a spring operating mechanism applied to a circuit breaker in a breaking state.

Fig. 3 is a second schematic structural view of a spring operating mechanism applied to a circuit breaker in a breaking state.

Fig. 4 is a schematic diagram of a spring operating mechanism applied to a circuit breaker in a breaking state.

Fig. 5 is a schematic structural diagram of a spring operating mechanism applied to a circuit breaker in a brake-off energy storage state.

Fig. 6 is a schematic diagram of a spring operating mechanism applied to a circuit breaker in a brake-off energy storage state.

Fig. 7 is a schematic structural diagram of a spring operating mechanism applied to a circuit breaker in a brake-off energy storage state.

Fig. 8 is a schematic structural view of a spring operating mechanism applied to a circuit breaker in a closed state.

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

Fig. 10 is a schematic diagram III of a spring operating mechanism applied to a circuit breaker in a closed state.

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

Reference numerals illustrate:

1. a mounting plate; 2. an eccentric flywheel; 3. a driving 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 piece; 10. a first rotating shaft; 11. a first tray; 12. a second tray body; 13. a first dial block; 14. the second limit column; 15. a first blocking end; 16. a second blocking end; 17. a limiting hole; 18. a locking shaft; 19. a connecting column; 20. a second torsion spring; 21. a transition piece; 22. a first projecting arm; 23. a second extension arm; 24. a second telescopic rod; 25. a first telescopic rod; 26. a second dial block; 27. a second rotating shaft; 28. a deflector rod; 29. a first torsion spring; 30. eccentric notch; 31. a first limiting member; 32. a first limit post; 33. a key tooth structure; 34. stumbled tooth; 35. and a hole is penetrated.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured 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 should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The opening and closing spring 6 operating device that this embodiment provided includes: the device comprises a mounting plate 1, an eccentric flywheel 2, a rotary table, a driving cam 3, a connecting rod 4, a crank arm 5, a closing spring 6 and a separating brake spring 7; the eccentric flywheel 2, the rotary table and the driving cam 3 are arranged on the first rotary shaft 10 in a stacked mode, the first rotary shaft 10 is vertically arranged on the mounting plate 1, and the connecting rod 4, the closing spring 6 and the opening spring 7 are arranged in parallel with the mounting plate 1. Wherein the vertical distance between the eccentric flywheel 2 and the mounting plate 1 is smaller than 100mm.

As shown in fig. 1, 2 and 3, the eccentric flywheel 2 has a fan-shaped structure, and the eccentric flywheel 2 is rotatably connected to the mounting plate 1 through a first rotating shaft 10; the first rotating shaft is provided with a catch 34, the eccentric flywheel 2 is provided with an arc-shaped groove corresponding to the catch 34, and the catch 34 is inserted into the groove to realize connection of the eccentric flywheel 2 and the first rotating shaft 10. An electric lock hanging plate 8 is connected to the outer circumference of the eccentric flywheel 2, and the electric lock hanging plate 8 is provided with a hanging end extending outwards. The lower left side of mounting panel 1 rotates and is connected with second locating part 9, have the butt face on the second locating part 9, electric lock link plate 8 can pass through the rotation, with the butt face of second locating part 9 articulates and stops.

As shown in fig. 1 and 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 buckled with each other, and an annular cavity is formed in the rotary table; the first disc body 11 is close to the eccentric flywheel 2, a first shifting block 13 is arranged on one side, facing the eccentric flywheel 2, of the first disc body 11, an arc-shaped through hole is formed in the eccentric flywheel 2, 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. A first blocking end 15 and a second blocking end 16 extend from the outer edge of the first disk 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 turntable; the eccentric flywheel 2 is provided with a penetrating hole 35, and the second limiting column 14 is accommodated in the penetrating hole 35; the through holes 35 enable the turntable and the eccentric flywheel 2 to be in close contact without reserving an accommodating space for the second limiting post 14, so that the overall thickness of the turntable and the eccentric flywheel 2 is further reduced. A limiting hole 17 is formed in the outer edge of the first disc body 11, and the limiting hole 17 is arranged close to the first blocking end 15; a locking shaft 18 is slidably inserted in the second limiting column 14, and the locking shaft 18 can slide out of the second limiting column 14 and be inserted into the limiting hole 17; the mounting plate 1 is provided with a connecting column 19 which is vertically arranged, a second torsion spring 20 is sleeved on the connecting column 19, one end of the second torsion spring 20 passes 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 locking shaft 18 is driven to be inserted into and separated from the limiting hole 17 by the rotation of the connecting rod 4.

As shown in fig. 1 and 4, the driving cam 3 is disposed 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 center of the second disc body 12 is provided with an opening, a part of the transition piece 21 extends out of the turntable from the opening, and a first extending arm 22 and a second extending arm 23 which are arranged at an angle are arranged on the circumference of the transition piece 21. One end of the connecting rod 4 is rotatably connected to the first extension 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 extension arm 23, and the other end is rotatably connected to the mounting plate 1; the brake separating spring 7 is sleeved on the second telescopic rod 24, and two ends of the brake separating spring 7 are respectively in butt joint 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 rotatably connected to the mounting plate 1 upwards; 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 turntable, the second shifting block 26 is connected to the second turntable body 12 through a second rotating shaft 27, and one end of the second rotating shaft 27 extending out of the turntable is connected with a shifting lever 28; 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 second disc 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 in contact and abutting contact with the eccentric notch 30 through rotation. A first limiting piece 31 is rotatably installed at the right lower side of the mounting plate 1, and the first limiting piece 31 contacts and blocks the deflector rod 28 through rotation. A first limiting column 32 is vertically connected to the side of the first disk 11 facing the mounting plate 1, and the first limiting column is blocked at the side of the shift lever 28 facing away from the driving cam 3.

As shown in fig. 2, 3 and 4, in the open state, the closing spring 6 and the opening spring 7 are both in the energy release 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 shifting block 26 is not abutted against the eccentric notch 30 of the driving cam 3, so that the second shifting block 26 cannot push the driving cam 3 to rotate.

As shown in fig. 5, 6 and 7, the switch-on spring 6 is in a compressed energy storage state, and the switch-off spring 7 is in an energy release state. A key tooth structure 33 is arranged on one end surface of the first rotating shaft 10, which is far away from the mounting plate 1, the key tooth structure 33 is an annular tooth-shaped groove, and a special operating crank is suitable for being inserted into the key tooth structure 33; 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 energy storage; the electric lock hanging plate 8 is connected with the second limiting piece 9 in a hanging mode, and therefore position limitation of the eccentric flywheel 2 is achieved. During the energy storage process of the closing spring 6, the rotation is shifted to rotate anticlockwise, so that the second shifting block 26 is in contact and abutting connection with the eccentric notch 30 of the driving cam 3.

As shown in fig. 8, 9 and 10, in a closing state, the opening spring 7 is in a compressed energy storage state, and the closing spring 6 is in an energy release state. The second limiting piece 9 rotates to contact with the blocking of the electric lock hanging plate 8, so that the eccentric flywheel 2 is reset clockwise; the eccentric flywheel 2 drives the rotation to rotate clockwise, and the second shifting block 26 drives the driving cam 3 to rotate clockwise; the second extending arm 23 swings downwards, so that the brake separating spring 7 compresses and stores energy downwards; the first extending arm 22 swings upwards, so that the connecting rod 4 drives the crank arm 5 to swing anticlockwise, and closing motion is achieved. In the counterclockwise rotation process 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 a closing pre-stored state, that is, in a reclosing state, the closing spring 6 and the opening spring 7 are both in a compressed stored state. Driving the first rotating shaft 10 to drive the eccentric flywheel 2 to rotate anticlockwise from the closing state of fig. 8 to the closing pre-stored energy state of fig. 11; during the rotation process of the eccentric flywheel 2, the turntable is not stirred to rotate.

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

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. Spring operating mechanism for circuit breaker, characterized by comprising:

the first rotating shaft (10) is rotatably arranged on the mounting plate (1), a key tooth structure (33) suitable for inserting a crank of the circuit breaker is arranged at the exposed end of the first rotating shaft, and a trip tooth (34) is arranged on the first rotating shaft;

the eccentric flywheel (2) is rotationally connected to the mounting plate (1) through the first rotating shaft (10), an arc-shaped through hole is formed in the circumferential direction of the eccentric flywheel (2), and a groove suitable for accommodating the catch tooth (34) is formed in the eccentric flywheel (2);

the rotary disc is positioned between the eccentric flywheel (2) and the mounting plate (1), and is rotationally sleeved on the first rotating shaft (10); a first shifting block (13) is arranged on one side of the rotary 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 cavity of the turntable is provided with an opening at one end, and the opening is opened towards the mounting plate (1);

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

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

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

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

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

the eccentric flywheel (2), the rotary table and the driving cam (3) are installed on the first rotary shaft (10) in a stacked mode, the first rotary shaft (10) is vertically installed on the installation plate (1), and the connecting rod (4), the closing spring (6) and the opening spring (7) are installed in parallel with the installation plate.

2. Spring operated mechanism for a circuit breaker according to claim 1, characterized in that the drive cam (3) is rotatably connected to the first rotary shaft (10) by means of a transition piece (21), the transition piece (21) having a first projecting arm (22) and a second projecting arm (23) projecting from the cavity of the rotary disc;

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

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

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 rotary table, the other end of the first torsion spring 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 abutting connection with the driving cam (3);

the first limiting piece (31) is rotatably connected to the mounting plate (1) and is suitable for blocking the contact of the deflector rod (28).

4. The spring operated mechanism for a circuit breaker of claim 3, further comprising:

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 (1) and is suitable for blocking one side, away from the driving cam (3), of the deflector rod (28).

5. The spring operated mechanism for a circuit breaker of 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 end which extends outwards;

the second limiting piece (9) is rotatably connected to the mounting plate (1), and the second limiting piece (9) is provided with an abutting surface suitable for blocking the hanging end.

6. Spring operated mechanism for a circuit breaker according to claim 1, characterized in that the outer rim of the turntable has protruding from it a first blocking end (15) and a second blocking end (16), further comprising:

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

7. Spring operated mechanism for a circuit breaker according to claim 6, characterized in that the eccentric flywheel (2) has a through hole (35) for receiving the second limit post (14).

8. The spring operated mechanism for a circuit breaker of 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 limit post (14), a portion of the locking shaft (18) being adapted to be slidably inserted into the limit hole (17);

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

9. The spring operated mechanism for a circuit breaker of claim 1, further comprising:

one end of the first telescopic rod (25) is rotationally connected to the mounting plate (1), and the other end of the first telescopic rod is rotationally connected to the eccentric flywheel (2); the closing spring (6) is sleeved on the first telescopic rod (25) and is in abutting connection and fixation with two ends of the first telescopic rod (25);

one end of the second telescopic rod (24) is rotationally connected to the mounting plate (1), and the other end of the second telescopic rod is rotationally connected to the driving cam (3); the brake separating spring (7) is sleeved on the second telescopic rod (24) and is fixedly abutted to two ends of the second telescopic rod (24).

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