CN214672463U

CN214672463U - Operating mechanism of vacuum circuit breaker

Info

Publication number: CN214672463U
Application number: CN202121332191.3U
Authority: CN
Inventors: 王志高; 陈叶春
Original assignee: Tianyi Tongyi Electric Co ltd
Current assignee: Tianyi Tongyi Electric Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-11-09
Anticipated expiration: 2031-06-16

Abstract

The utility model provides a vacuum circuit breaker operating mechanism, the load simulator comprises a case, main drive and operating means, the machine case includes the frame, first fixed plate and second fixed plate, two fixed plates are used for fixed operating mechanism's inside transmission spare part, operating means includes combined floodgate energy memory, combined floodgate operating means, separating brake operating means and combined floodgate keep the subassembly, combined floodgate energy memory adopts the tensile combined floodgate energy memory spring of rigid gear drive to carry out the energy storage operation, the unstable performance that current chain drive brought has been avoided, and gear drive has reduced spare part quantity and interference face wearing and tearing, overall structure can compact setting, and be convenient for installation and debugging and maintenance, improve vacuum circuit breaker operating mechanism's life.

Description

Operating mechanism of vacuum circuit breaker

Technical Field

The utility model relates to an electrical equipment technical field, specificly relate to a vacuum circuit breaker operating mechanism.

Background

The circuit breaker is a main device in the field of medium-high voltage power transmission and transformation, the function of the circuit breaker is that when a contact of the circuit breaker is opened and closed, the circuit can be opened and closed, and the closing and opening operations of the circuit breaker are realized through an operating mechanism of the circuit breaker. The spring control mechanism has the characteristics of low cost, simple structure, long service life, basically no maintenance and the like, and is widely used on a high-voltage circuit breaker.

The operating mechanism of the existing circuit breaker adopts a three-clamping-plate structure which is transversely arranged front and back, the problem that the operating mechanism occupies large space and is not beneficial to the overall layout of space in a case exists, in addition, the existing circuit breaker operating mechanism has a complex structure and high manufacturing cost, and the performance is not stable enough due to the large number of parts.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the vacuum circuit breaker operating mechanism has the advantages that the number of parts is reduced, the whole functional structure is simple and clear, the installation and the maintenance are convenient, the performance of the vacuum circuit breaker is more stable, and the service life is prolonged.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a vacuum circuit breaker operating mechanism comprises a case, a main transmission device and an operating device;

the machine box comprises an outer frame, a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are vertically arranged in the middle of the outer frame and divide the middle of the outer frame into a first area, a second area and a third area;

the main transmission device comprises a main shaft and a connecting rod mechanism, the main shaft vertically penetrates through the first fixing plate and the second fixing plate and is transversely arranged in the outer frame, two ends of the connecting rod mechanism are respectively connected with the main shaft and the vacuum arc extinguish chamber insulating pull rod, and the main shaft is used for driving the connecting rod mechanism to pull the vacuum arc extinguish chamber insulating pull rod up and down in a rotating manner;

the operating device comprises a closing energy storage device, a closing operating device, a separating operating device and a closing maintaining assembly, the closing energy storage device comprises a closing energy storage spring, an energy storage driving device, a manual energy storage operating assembly and an electric energy storage operating assembly, the closing energy storage spring is vertically arranged in a first area, the upper end of the closing energy storage spring is fixed on the outer frame, the lower end of the closing energy storage spring is connected with a spring connecting lever, and the spring connecting lever penetrates through the first fixing plate through a key and is linked with the closing operating device;

the energy storage driving device is arranged in a second area and comprises a driving ratchet wheel, a driven gear, a driving pawl and a limiting pin, the driving ratchet wheel is fixedly sleeved with the spring crank arm, the driven gear and the driving ratchet wheel are coaxially arranged on one side, away from the first fixing plate, of the driving ratchet wheel, the driving pawl is arranged on the side face, close to the driving ratchet wheel, of the driven gear and drives the driving ratchet wheel to rotate, and the limiting pin is fixed on the first fixing plate and located on the motion track of the outermost circle of the driving pawl;

the manual energy storage operation assembly comprises a manual operation part and a gear shaft, the gear shaft is meshed with the driven gear in a second area, the manual operation part is fixed on the second fixing plate and connected with the gear shaft, and the manual operation part is used for driving the gear shaft to rotate;

the electric energy storage operation assembly comprises a driving motor and a driving gear, the driving motor is fixed on the second fixing plate, an output shaft of the driving motor faces the driven gear, and the driving gear is installed on the output shaft of the driving motor and meshed with the driven gear;

the switching-on operation device, the switching-off operation device and the switching-on maintaining assembly are all arranged in a second area, the switching-on operation device and the switching-off operation device are used for driving the main transmission device to perform switching-on operation and switching-off operation in a transmission mode, and the switching-on maintaining assembly acts on the main transmission device and the switching-off operation device to enable the vacuum circuit breaker to maintain a switching-on state.

Further, the electric energy storage assembly further comprises a microswitch, the microswitch is arranged below the spring crank arm, when the spring crank arm rotates to a preset energy storage end point position, the spring crank arm presses against a reed of the microswitch, the microswitch is electrically connected with the driving motor, and the microswitch is used for controlling the switch of the driving motor.

Furthermore, the manual operating part is connected with the gear shaft through a one-way bearing, and/or the driving motor is connected with the driving gear through a one-way bearing.

Further, the closing operation device comprises a closing coil, a closing push plate, a closing connecting plate, a first holding pawl and a cam;

the cam and the spring connecting lever are fixedly connected to the same rotating shaft through a key and are positioned on one side, away from the first fixing plate, of the driven gear, when the closing energy storage spring releases energy in a recovery mode, the spring connecting lever drives the cam to rotate downwards to press the connecting rod mechanism, and the main transmission device drives the insulating pull rod of the vacuum arc extinguish chamber to move upwards;

the cam is provided with a cam bearing, the middle part of the first holding pawl is rotatably fixed on the first fixing plate, the closing coil is fixedly arranged on the upper part of the first fixing plate, the middle part of the closing push plate is rotatably fixed on the first fixing plate, one end of the closing push plate is in lap joint with the front side of the pushing-out of the armature of the closing coil, one end of the closing push plate, far away from the closing coil, is rotatably connected with one end of the closing connecting plate, far away from the closing push plate, and is rotatably connected with one end of the first holding pawl, and when the closing push plate is not pushed by the armature of the closing coil, one end of the first holding pawl, far away from the closing connecting plate, abuts against the cam bearing of the cam after the energy storage of the closing spring.

Furthermore, a chassis vehicle is arranged at the bottom of the case, the chassis vehicle is fixedly connected with the bottom surface of the outer frame, and the chassis vehicle is used for driving the case to advance or withdraw from the electric cabinet.

Further, the operating device further comprises an interlocking device, the interlocking device is arranged in the second area, and the interlocking device comprises an interlocking plate, an interlocking piece, a sliding piece, an interlocking connecting plate and a chassis lock plate;

the interlocking plate is L-shaped, the middle part close to a right angle is rotatably fixed below the switching-on push plate on the first fixing plate, the interlocking piece can be fixed below the interlocking plate on the first fixing plate in a vertically movable manner, the upper end of the interlocking piece pushes the interlocking plate, the sliding piece can be fixed below the interlocking piece on the first fixing plate in a vertically movable manner, the upper end of the sliding piece pushes the interlocking piece, one end of the interlocking connecting plate is rotatably connected with the lower end of the sliding piece, the chassis lock plate is arranged on the chassis and stretches into a second area from the bottom of the connecting rod mechanism at the bottom of the outer frame when being bounced, and the chassis lock plate is rotatably connected with one end, far away from the sliding piece, of the interlocking connecting plate;

when the interlocking plate is pushed, the upper end of the interlocking plate props against the closing push plate to lock the closing push plate.

The interlocking device further comprises an interlocking crank arm and a pin shaft, wherein the interlocking crank arm is fixed on the spindle and located below the interlocking piece and synchronously rotates with the spindle, and when the spindle rotates to perform closing, the interlocking crank arm rotates to push the interlocking piece upwards;

the pin shaft is arranged on the connecting rod mechanism above the chassis vehicle locking plate, and when the connecting rod mechanism drives to be switched on downwards, the pin shaft presses the chassis vehicle locking plate downwards to lock the chassis vehicle.

Further, operating means still includes the energy storage sign, closes the separating brake sign and closes the separating brake counter, the energy storage sign with micro-gap switch's reed linkage, close the separating brake sign with the main shaft linkage, close the separating brake counter with close the separating brake sign linkage, the energy storage sign is used for instructing close the energy storage condition of energy storage spring, close the separating brake sign and be used for instructing closing, the separating brake state of vacuum circuit breaker, close the separating brake counter and be used for the record vacuum circuit breaker and close, the separating brake number of times of operation.

Furthermore, the operating device further comprises a closing and opening auxiliary switch, an output end of the closing and opening auxiliary switch is connected with the main shaft, and the closing and opening auxiliary switch is used for switching the normally closed and normally open contact.

Furthermore, the operating device also comprises a switching-off flexible limiting device, and the switching-off flexible limiting device is connected with the main shaft.

The beneficial effects of the utility model reside in that: the switching-on energy storage device of the vacuum circuit breaker operating mechanism adopts the rigid gear transmission extension spring to perform energy storage operation, so that the problem of unstable performance caused by the existing chain transmission is avoided, the number of parts of the operating mechanism is reduced by the gear transmission, the installation, debugging and maintenance are convenient, and the service life of the vacuum circuit breaker operating mechanism is prolonged.

Drawings

Fig. 1 is a perspective view of an internal structure of an operating mechanism of a vacuum circuit breaker according to a first embodiment of the present invention;

fig. 2 is a front view of an internal structure of an operating mechanism of a vacuum circuit breaker according to a first embodiment of the present invention;

fig. 3 is a schematic diagram of a rightward structure of a closing energy storage device of a vacuum circuit breaker operating mechanism according to a first embodiment of the present invention;

fig. 4 is a schematic view of a transmission structure of a closing energy storage device of a vacuum circuit breaker operating mechanism according to a first embodiment of the present invention;

fig. 5 is a schematic left-phase structural diagram of a closing energy storage device of a vacuum circuit breaker operating mechanism according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a main transmission device and a closing operation device of a vacuum circuit breaker operating mechanism in an opening state according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of an opening operation device and a closing holding assembly in a closing state of a vacuum circuit breaker operating mechanism according to a first embodiment of the present invention;

fig. 8 is a schematic structural diagram of an interlocking device of an operating mechanism of a vacuum circuit breaker according to a first embodiment of the present invention;

fig. 9 is a schematic structural diagram of a chassis truck of a vacuum circuit breaker operating mechanism according to a first embodiment of the present invention;

fig. 10 is a schematic perspective view of an operating mechanism of a vacuum circuit breaker according to a first embodiment of the present invention.

Description of reference numerals:

1. a chassis; 2. a chassis truck; 3. a main transmission device; 4. an operating device;

11. an outer frame; 12. a first fixing plate; 13. a second fixing plate; 14. a first region; 15. a second region; 16. a third region;

31. a main shaft; 32. a link mechanism; 321. a first crutch panel; 322. a first link; 323. a main drive rod; 33. a brake separating spring;

41. switching on an energy storage device; 42. a switching-on operation device; 43. a brake-off operation device; 44. a closing holding assembly; 45. a switching auxiliary switch; 46. a flexible brake-separating limiting device; 47. an energy storage indication board; 48. a brake closing and opening indication board; 49. a counter;

411. closing an energy storage spring; 412. a spring crank arm; 413. an energy storage drive device; 4131. driving the ratchet wheel; 4132. a driven gear; 4133. a drive pawl; 4134. a spacing pin; 414. a manual energy storage operating assembly; 4141. a manual operating member; 4142. a gear shaft; 415. an electrically powered energy storage operating assembly; 4151. a drive motor; 4152. a driving gear; 4153. a microswitch;

421. a closing coil; 422. a closing push plate; 423. a closing connection plate; 424. a first retention tab; 425. a cam; 426. a cam bearing;

431. a brake separating coil; 432. a brake separating push plate; 433. separating a brake connecting plate; 434. a second holding pawl;

441. closing and maintaining the upper assembly; 442. closing and maintaining the lower assembly;

5. an interlock device; 51. an interlock plate; 52. an interlock tab; 53. sliding blades; 54. an interlocking link plate; 55. a chassis lock plate; 56. an interlocking crank arm; 57. and (7) a pin shaft.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 10, an operating mechanism of a vacuum circuit breaker includes a case, a main transmission device and an operating device;

From the above description, the beneficial effects of the present invention are: the switching-on energy storage device of the vacuum circuit breaker operating mechanism adopts the rigid gear transmission extension spring to perform energy storage operation, so that the problem of unstable performance caused by the existing chain transmission is avoided, the number of parts of the operating mechanism is reduced by the gear transmission, the installation, debugging and maintenance are convenient, and the service life of the vacuum circuit breaker operating mechanism is prolonged.

According to the description, when the gear rotates to drive the spring connecting lever to rotate so that the closing energy storage spring stretches and stores energy to a preset position, the spring connecting lever just extrudes the reed of the microswitch arranged at the rotating track end point, and therefore the power supply of the driving motor is disconnected.

As can be seen from the above description, the manual operating member and the gear shaft as well as the driving motor and the pinion are installed through the one-way bearings, and it can be ensured that the manual energy accumulating operation and the electric energy accumulating operation do not interfere with each other.

According to the description, when the closing coil is powered on or manually pressed, the armature of the closing coil pushes the closing push plate, the closing push plate drives the closing connecting plate to move downwards, one end of the first holding pawl connected with the closing connecting plate rotates downwards, the other end of the first holding pawl rotates upwards and does not abut against a cam bearing on the cam any more, the cam is released and rotates downwards under the driving of the closing spring to abut against the first turning plate, one end of the first turning plate connected with the first connecting rod rotates downwards, the main transmission device is driven to achieve closing, the closing operation device adopts a link mechanism for transmission, parts are reduced, the stability is improved, the structure is simple, the operation mechanism can be compactly arranged, the size of the operation mechanism is reduced, and the production and assembly difficulty is reduced.

According to the above description, through the linkage of the interlocking device and the chassis, the chassis lock plate can bounce and drive the connected interlocking connecting plate to move upwards when in a non-working position or a non-experimental position, the interlocking connecting plate drives the sliding sheet to push the interlocking sheet upwards to enable the interlocking sheet to move upwards, the interlocking sheet is pushed to rotate to push the lower part of the closing push plate, the closing plate is organized to rotate, and therefore the vacuum circuit breaker can be prevented from closing when in the non-working position or the experimental position.

As can be seen from the above description, the interlocking connecting lever is arranged on the main shaft and is linked with the main shaft, when the vacuum circuit breaker performs a closing operation, the interlocking connecting lever on the main shaft synchronously rotates to push the interlocking piece to move upwards and push the interlocking plate to rotate to abut against the closing push plate, so that the closing push plate is prevented from rotating, and the vacuum circuit breaker can be prevented from performing a secondary closing operation in a closing state; the pin shaft is arranged on a link mechanism of the main transmission device above the chassis lock plate, and when the vacuum circuit breaker performs switching-on operation, the pin shaft synchronously moves downwards to abut against the upper part of the chassis lock plate to prevent the chassis lock plate from bouncing, so that the chassis is locked to swing in and out, the vacuum circuit breaker is prevented from moving during switching-on, and locking is released when the chassis is in a switching-off state.

According to the above description, the energy storage indication board is linked with the reed of the microswitch of the driving motor, the reed position is extruded every time the switch-on energy storage spring touches, the energy storage indication board records once, the energy storage condition of the switch-on energy storage spring is conveniently displayed, the switch-on/off indication board is linked with the main shaft of the main transmission system, when the switch-on/off operation is carried out, the main shaft rotates to drive the switch-on/off indication board to change, the switch-on/off state of the vacuum circuit breaker is displayed, the switch-on/off counter is linked with the switch-on/off indication board, and the switch-on/off and switch-off indication board records.

According to the above description, the closing and opening auxiliary switch is arranged, the driving end of the switch is connected to the main shaft, and after the closing and opening process is finished, the main shaft rotates in place to drive the closing and opening auxiliary switch to complete the switching between the normally closed and normally open contacts.

As can be seen from the above description, the arrangement of the opening flexible limiting device connected with the main shaft can avoid the mechanical vibration generated by rigid limiting during opening.

Referring to fig. 1 to 10, a first embodiment of the present invention is:

a vacuum circuit breaker operating mechanism comprises a case 1, a chassis vehicle 2, a main transmission device 3 and an operating device 4, as shown in figure 1 and figure 2, the case 1 comprises an outer frame 11, a first fixing plate 12 and a second fixing plate 13, the first fixing plate 12 and the second fixing plate 13 are arranged in the middle of the outer frame 11 and divide the inside of the case 1 into a first area 14, a second area 15 and a third area 16, the main transmission device 3 and the operating device 4 are arranged in the case 1, the chassis vehicle 2 is fixedly connected with the bottom of the case 1, and the chassis vehicle 2 drives the case 1 to advance or withdraw from an electric cabinet.

As shown in fig. 1 to 2 and 6, the main transmission device 3 includes a main shaft 31, a link mechanism 32 and a tripping spring 33, the main shaft 31 penetrates through the first fixing plate 12 and the second fixing plate 13 from the first region 14 to the third region 16 and is transversely disposed in the chassis 1, the link mechanism 32 includes a first crank plate 321, a first link 322 and a main transmission rod 323, one end of the first crank plate 321 is fixedly connected to the main shaft 31, the other end of the first connecting rod 322 is rotatably connected with one end of the first connecting rod 322, which is far away from the first crutch plate 321, is rotatably connected with the main transmission rod 323, the middle part of the main transmission rod 323 is rotatably fixed on the outer frame 11, one end of the main transmission rod 323, which is far away from the first connecting rod 322, is rotatably connected with the insulating pull rod of the vacuum arc-extinguishing chamber, the opening spring 33 is vertically arranged, and the two ends of the opening spring are respectively fixed on the end part of the main transmission rod 323, which is close to the first connecting rod 322, and the outer frame 11 above the main transmission rod 323;

when the first pulling plate 321 is pressed, one end of the first pulling plate 321 connected with the first connecting rod 322 rotates downwards and drives the main shaft 31 to rotate synchronously, so that the first connecting rod 322 moves downwards and drives one end of the main transmission rod 323 connected with the first connecting rod to rotate downwards, meanwhile, the opening spring 33 is stretched to store energy, one end of the main transmission rod 323 far away from the first connecting rod 322 rotates upwards, and an insulating pull rod of the vacuum arc-extinguishing chamber is jacked up to realize contact joint of the vacuum arc-extinguishing chamber, and a vacuum circuit breaker is switched on;

on the contrary, when the pressing on the first turning plate 321 is removed, the opening spring 33 returns to the original shape to release energy, so as to drive one end of the main transmission rod 323 close to the first connecting rod 322 to rotate upwards, drive the first connecting rod 322 to move upwards, so that one end of the first turning plate 321 connected with the first turning plate rotates upwards, and simultaneously drive the main shaft 31 to rotate synchronously, and one end of the main transmission rod 323 far from the first connecting rod 322 rotates downwards to pull down the insulating pull rod, so that the contacts of the vacuum arc-extinguishing chamber are separated, and the vacuum circuit breaker is opened.

As shown in fig. 1 and 2, the operating device 4 includes a closing energy storage device 41, a closing operating device 42, an opening operating device 43, and a closing holding assembly 44;

as shown in fig. 3 to 5, the closing energy storage device 41 includes a closing energy storage spring 411, an energy storage driving device 413, a manual energy storage operating assembly 414 and an electric energy storage operating assembly 415, the closing energy storage spring 411 is vertically disposed in the first region 14, an upper end of the closing energy storage spring 411 is fixed on the outer frame 11, a lower end of the closing energy storage spring is connected to a spring connecting lever 412, the spring connecting lever 412 is linked with the closing operating device 42 by a key penetrating through the first fixing plate 12, and the closing energy storage spring 411 acts on the spring connecting lever 412 through the energy storage driving device 413 to realize stretching energy storage;

as shown in fig. 4, the energy storage driving device 413 is disposed in the second region 15, the energy storage driving device 413 includes a driving ratchet 4131, a driven gear 4132, a driving pawl 4133 and a limit pin 4134, the driving ratchet 4131 is fixedly sleeved with the spring crank 412, the driven gear 4132 and the driving ratchet 4131 are coaxially disposed on a side of the driving ratchet 4131 away from the first fixing plate 12, the driving pawl 4133 is disposed on a side of the driven gear 4132 close to the driving ratchet 4131 and can drive the driving ratchet 4131 to rotate, the limit pin 4134 is fixed on the first fixing plate 12 and on a movement track of an outermost circle of the driving pawl 4133;

when the driven gear 4132 is driven to rotate, the driving pawl 4133 drives the driving ratchet wheel 4131 to rotate, so that the spring crank arm 412 is driven to rotate, the closing energy storage spring 411 stretches and stores energy, when the closing energy storage spring 411 stores energy in place, the driven gear 4132 drives the driving pawl 4133 to move to the position of the limiting pin 4134, and under the action of the limiting pin 4134, the driving pawl 4133 and the driving ratchet wheel 4131 are separated and combined;

the manual energy storage operation assembly 414 comprises a manual operation piece 4141 and a gear shaft 4142, the gear shaft 4142 penetrates through the second fixing plate 13 and is meshed with the driven gear 4132 in the second region 15, one end of the third region 16 is connected with the manual operation piece 4141, and the gear shaft 4142 is connected with the gear shaft 4142 through a one-way bearing; the gear shaft 4142 is rotated to drive the driven gear 4132 to rotate through manually rotating the manual operating part 4141, so that the closing energy storage spring 411 is stretched and stored energy;

the electric energy storage operating assembly 415 comprises a driving motor 4151 and a driving gear 4152, the driving motor 4151 is fixed on the second fixing plate 13, the output shaft penetrates through the second fixing plate 13 and extends to the side, close to the first fixing plate 12, of the driven gear 4132, and the driving gear 4152 is mounted on the output shaft of the driving motor 4151 through a one-way bearing and meshed with the driven gear 4132; the driving gear 4152 is driven to rotate by the driving motor 4151 so as to drive the driven gear 4132 to rotate, so that the closing energy storage spring 411 is stretched and stored energy; a microswitch 4153 of the driving motor 4151 is arranged on one side of the first fixing plate 12, which is positioned in the first area 14, the microswitch 4153 is positioned at the end position of the motion track of the spring crank arm 412, and when the closing energy storage spring 411 is stored in place, the spring crank arm 412 presses an action reed of the microswitch 4153 to cut off the power supply of the driving motor 4151.

As shown in fig. 6, the closing operation device 42 is disposed in the second area 15, the closing operation device 42 includes a closing coil 421, a closing push plate 422, a closing link plate 423, a first holding device 424 and a cam 425, the cam 425 and a spring crank 412 are fixedly connected to one side of the driven gear 4132 far away from the first fixing plate 12 on the same rotating shaft through a key, the cam 425 presses against the first crank 321 when rotating downward during closing operation, a connecting end of the spring crank 412 and the closing energy storage spring 411 rotates upward to enable the closing energy storage spring 411 to release energy, a cam bearing 426 is disposed on the cam 425 far away from the fixing end, a middle portion of the first holding device 424 is rotatably fixed on the first fixing plate 12, the closing coil 421 is fixedly disposed on an upper portion of the first fixing plate 12, a middle portion of the closing push plate 422 is rotatably fixed on the first fixing plate 12 and one end of the closing push plate 422 is located on a front side of the closing coil 421 pushing out the armature, one end of the closing push plate 422, which is far away from the closing coil 421, is rotatably connected with one end of the closing link plate 423, which is far away from the closing push plate 422, is rotatably connected with one end of the first holding pawl 424, and when the closing push plate 422 is not pushed by the armature of the closing coil 421, one end of the first holding pawl 424, which is far away from the closing link plate 423, butts against the cam bearing 426 of the cam 425 after the energy is stored in the closing energy storage spring 411;

when the closing coil 421 is powered on or manually pressed, the armature of the closing coil 421 pushes the closing push plate 422, the closing push plate 422 drives the closing link plate 423 to move downward, so that the end of the first holding pawl 424 connected with the closing link plate 423 rotates downward, the other end of the first holding pawl 424 rotates upward and no longer abuts against the cam bearing 426 on the cam 425, the cam 425 is released, the cam 425 rotates downward under the driving of the closing spring to abut against the first turning plate 321, the end of the first turning plate 321 connected with the first link rod 322 rotates downward, and the main transmission device 3 is driven to realize closing.

As shown in fig. 7, the opening operation device 43 is disposed in the second area 15, the opening operation device 43 includes an opening coil 431, an opening push plate 432, an opening link plate 433 and a second holding latch 434, the middle portion of the second holding latch 434 is rotatably fixed on the second fixing plate 13, the opening coil 431 is fixedly disposed on the upper portion of the second fixing plate 13, the middle portion of the opening push plate 432 is rotatably fixed on the first fixing plate 12 and one end of the opening push plate 432 is located at the front side of the pushing-out of the armature of the opening coil 431, one end of the opening push plate 432 far away from the opening coil 431 is rotatably connected with one end of the opening link plate 433, and one end of the opening link plate 433 far away from the opening push plate 432 is rotatably connected with one end of the second holding latch 434;

the closing keeping assembly 44 comprises a closing keeping upper assembly 441 and a closing keeping lower assembly 442, the middle of the closing keeping upper assembly 441 is rotatably fixed on the second fixing plate 13, the closing keeping lower assembly 442 is fixedly sleeved on the main shaft 31 and is lapped with one end of the closing keeping upper assembly 441, when the cam 425 rotates downwards to press the first turning plate 321, the closing keeping lower assembly 442 rotates synchronously under the driving of the main shaft 31 and is pressed by one end of the closing keeping upper assembly 441 which is lapped, and at the moment, one end of the closing keeping upper assembly 441, which is far away from the closing keeping upper assembly 441, is pressed against the second keeping pawl 434;

when the opening coil 431 is powered on or manually pressed, the armature of the opening coil 431 pushes the opening push plate 432, the opening push plate 432 drives the opening connecting plate 433 to move downwards, so that one end of the second holding pawl 434, which is connected with the opening connecting plate 433, rotates downwards, the other end of the second holding pawl 434 rotates upwards and does not abut against the closing holding upper assembly 441, the closing holding lower assembly 442 is released, the main shaft 31 rotates under the driving of the return energy release of the opening spring 33 by the link mechanism 32 of the main transmission device 3, and the first crank plate 321 and the closing holding lower assembly 442 synchronously rotate to realize opening.

As shown in fig. 8, the locking device 5 is further included in the second area 15, the locking device 5 includes an interlocking plate 51, an interlocking piece 52, a sliding piece 53, an interlocking connecting plate 54, a chassis lock plate 55, an interlocking connecting lever 56 and a pin 57, the interlocking plate 51 is L-shaped, the middle part close to the right angle is rotatably fixed below a closing push plate 422 on the first fixing plate 12, the interlocking piece 52 is vertically fixed below the interlocking plate 51 on the first fixing plate 12, the upper end of the interlocking piece 52 can push the interlocking plate 51, the sliding piece 53 is vertically fixed below the interlocking piece 52 on the first fixing plate 12, the upper end of the sliding piece 53 can push the interlocking piece 52, the lower end of the sliding piece 53 is rotatably connected with the interlocking connecting plate 54, as shown in fig. 9, the chassis lock plate 55 is disposed in the chassis 2 and protrudes into the second area 15 from below the bottom link mechanism 32 of the outer frame 11, the chassis lock plate 55 is rotatably connected with one end of the interlocking connecting plate 54, which is far away from the sliding sheet 53, when the chassis 2 is in a non-working position or a non-experimental position, the interlocking connecting plate 54 is driven to move upwards, and then the sliding sheet 53 is driven to move upwards to push the lower end of the interlocking sheet 52, namely the interlocking sheet 52 moves upwards to push the interlocking plate 51, one end of the interlocking plate 51, which is close to the interlocking sheet 52, rotates upwards to enable the top end to push the lower part of the closing push plate 422, so that the closing push plate 422 can be prevented from rotating to generate closing operation when the circuit breaker is in the non-working position or the experimental position;

the interlocking crank arm 56 is fixed on the spindle 31 and located below the interlocking piece 52, the interlocking crank arm 56 rotates synchronously with the spindle 31, when the circuit breaker is switched on, the interlocking crank arm 56 rotates upwards to push the interlocking piece 52 to move upwards, so that the interlocking plate 51 rotates to push the lower part of the switching-on push plate 422, the switching-on push plate 422 is prevented from rotating, and the circuit breaker can be prevented from performing secondary switching-on action in the switching-on state; the pin shaft 57 is arranged at the rotating connection position of the first connecting rod 322 of the connecting rod mechanism 32 above the chassis lock plate 55 and the main transmission rod 323, when the breaker is switched on, the pin shaft 57 moves downwards along with the connecting rod mechanism 32 and presses against the chassis lock plate 55 to lock the chassis lock plate 55, so that the position of the chassis 2 is locked, and when the breaker is switched off, the pin shaft 57 moves upwards along with the connecting rod mechanism 32 to remove the pressing against the chassis lock plate 55 and further contact the locking of the chassis 2.

As shown in fig. 1 to 6 and 10, the operating device 4 further includes an auxiliary switching on/off switch 45, a flexible opening/closing limiting device 46, an energy storage indication board 47, an auxiliary switching on/off indication board 48 and an auxiliary switching on/off counter 49, a driving end of the auxiliary switching on/off switch 45 is connected to the main shaft 31, after the switching on/off process is completed, the main shaft 31 rotates in place to drive the auxiliary switching on/off switch 45 to complete switching between normally closed and normally open contacts, the flexible opening/closing limiting device 46 is connected to the main shaft 31 to avoid mechanical vibration generated by rigid limitation during switching off, the energy storage indication board 47 is linked with a reed of the micro switch 4153 to indicate the energy storage condition, the auxiliary switching on/off indication board 48 is linked with the main shaft 31 to indicate the switching on/off state, and the switching on/off counter 49 is linked with the auxiliary switching on/off indication board 48 to record the switching on/off times.

To sum up, the utility model provides a pair of vacuum circuit breaker operating mechanism, vacuum circuit breaker operating mechanism's combined floodgate energy memory, combined floodgate operating device and separating brake operating device all adopt rigid transfer line structure to close floodgate and separating brake operation, the unstable performance that has avoided current chain drive and a large amount of spare part transmissions to bring, spare part quantity has been reduced, the technology degree of difficulty in the production assembling process has been reduced, overall structure can compact setting, be applicable to the relatively less vacuum switch cabinet of volume, and be convenient for installation and debugging and maintenance, circuit breaker operating mechanism overall structure is simple and clear, it is little to interfere face contact wear, under the condition that does not need the improved material, its life can prolong to 3 ten thousand to 8 ten thousand, can enough practice thrift manufacturing cost and can improve product mechanical life by a wide margin again.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The operating mechanism of the vacuum circuit breaker is characterized by comprising a case, a main transmission device and an operating device;

2. The vacuum circuit breaker operating mechanism according to claim 1, wherein the electric energy storage assembly further comprises a micro switch, the micro switch is arranged below the spring crank arm, when the spring crank arm rotates to a preset energy storage end position, the spring crank arm presses against a reed of the micro switch, the micro switch is electrically connected with the driving motor, and the micro switch is used for controlling the switch of the driving motor.

3. The vacuum circuit breaker operating mechanism as claimed in claim 1, wherein the manual operating member is coupled to the gear shaft through a one-way bearing, and/or the driving motor is coupled to the driving gear through a one-way bearing.

4. The operating mechanism of a vacuum circuit breaker according to claim 1, characterized in that the closing operating device comprises a closing coil, a closing push plate, a closing link plate, a first holding pawl and a cam;

5. The vacuum circuit breaker operating mechanism according to claim 4, wherein a chassis vehicle is disposed at the bottom of the case, the chassis vehicle is fixedly connected to the bottom surface of the outer frame, and the chassis vehicle is used for driving the case to advance into or withdraw from the electrical cabinet.

6. The vacuum circuit breaker operating mechanism of claim 5 wherein the operating device further comprises an interlock device, the interlock device being disposed in the second region, the interlock device comprising an interlock plate, an interlock tab, a slide, an interlock link plate, and a chassis lock plate;

7. The operating mechanism of the vacuum circuit breaker according to claim 6, wherein the interlocking device further comprises an interlocking lever and a pin shaft, the interlocking lever is fixed on the main shaft and positioned below the interlocking piece and rotates synchronously with the main shaft, and when the main shaft rotates to close the switch, the interlocking lever rotates to push the interlocking piece upwards;

8. The operating mechanism of claim 2, wherein the operating device further comprises an energy storage indicator, a switching-on/off indicator and a switching-on/off counter, the energy storage indicator is linked with a reed of the micro switch, the switching-on/off indicator is linked with the main shaft, the switching-on/off counter is linked with the switching-on/off indicator, the energy storage indicator is used for indicating the energy storage condition of the switching-on energy storage spring, the switching-on/off indicator is used for indicating the switching-on/off state of the vacuum circuit breaker, and the switching-on/off counter is used for recording the switching-on/off operation times of the vacuum circuit breaker.

9. The vacuum circuit breaker operating mechanism according to claim 1, wherein the operating device further comprises an on-off auxiliary switch, an output end of the on-off auxiliary switch is connected with the main shaft, and the on-off auxiliary switch is used for switching a normally closed and normally open contact.

10. The vacuum interrupter operating mechanism of claim 1, wherein the operating device further comprises a trip flexible limiting device connected to the main shaft.