CN215815618U - Circuit breaker operating mechanism - Google Patents

Abstract

The utility model discloses a circuit breaker operating mechanism in the technical field of circuit breakers, which comprises a chassis and a frame, wherein the chassis is arranged at the bottom of the frame, a modular operating mechanism and a main shaft system are arranged in the frame, and the modular operating mechanism and the main shaft system are respectively arranged at the middle part and the middle-lower part of the frame. The circuit breaker operating mechanism is compact in structure, applicable to a vacuum switch cabinet with relatively small size and beneficial to the overall design and arrangement of the switch cabinet. The circuit breaker operating device has simple and clear integral structure and small contact wear of an interference surface, the service life of the circuit breaker operating device can be prolonged to 3-8 ten thousand times without improving materials, the production cost is saved, the mechanical life of a product is greatly prolonged, the process difficulty in the production and assembly process is simplified, the modularized operating device is convenient to overhaul and maintain, the circuit breaker operating device can be integrally taken out from a frame and then installed, the mechanical parameters of the circuit breaker are not required to be readjusted, and the easily damaged electrical elements are convenient to replace.

Description

Circuit breaker operating mechanism

Technical Field

The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker operating mechanism.

Background

The circuit breaker is a main device in the field of medium and high voltage power transmission and transformation, the function of the circuit breaker is that when the contact of the circuit breaker performs opening and closing actions, the circuit breaker can be opened and closed, and the opening and closing actions of the circuit breaker are realized through an operating mechanism. The existing circuit breaker operating mechanism occupies a large space and is not beneficial to the overall arrangement of the switch cabinet. In addition, the existing circuit breaker operating mechanism has the disadvantages of complex structure, high manufacturing cost, unstable performance, short service life of most operating mechanisms and incapability of meeting the standard requirement of service life.

Based on this, the utility model designs a circuit breaker operating mechanism to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a circuit breaker operating mechanism, which aims to solve the problems that the existing circuit breaker operating mechanism in the background art occupies a large space and is not beneficial to the overall arrangement of a switch cabinet. In addition, the existing circuit breaker operating mechanism has the problems of complex structure, high manufacturing cost, unstable performance, short service life of most operating mechanisms and incapability of meeting the standard requirement of the service life.

In order to achieve the purpose, the utility model provides the following technical scheme: a circuit breaker operating mechanism comprises a chassis and a frame, wherein the chassis is arranged at the bottom of the frame, a modular operating mechanism and a main shaft system are arranged in the frame, and the modular operating mechanism and the main shaft system are respectively arranged in the middle and the middle lower part of the frame;

the modularized operating mechanism comprises a left side plate and a right side plate, a bottom plate interlocking plate is connected to the left side plate, a side plate interlocking plate A and a side plate interlocking plate B are installed on the frame, a connecting plate is connected between the side plate interlocking plate A and the bottom plate interlocking plate, the side plate interlocking plate A and the side plate interlocking plate B are connected with the left side plate through limit nails, a tension spring is arranged on the front side of the side plate interlocking plate B, and a closing energy storage rotating shaft limit nail is arranged at the position of the side plate interlocking plate B;

the energy storage motor is arranged on the left side plate, the transmission gear a is connected and arranged on the energy storage motor, a middle supporting shaft, an energy storage main shaft and an energy storage maintaining shaft I are connected and arranged between the left side plate and the right side plate, the energy storage main shaft is positioned below the middle supporting shaft, a transmission gear b and a transmission gear c are respectively arranged on the middle supporting shaft and the energy storage main shaft, a manual worm and gear transmission set is arranged on the inner side of the right side plate, an output shaft of the energy storage motor is connected with the transmission gear a through a one-way bearing, the manual worm and gear transmission set is connected with the transmission gear a through a one-way bearing, a driving claw is arranged on the transmission gear c, a driving wheel is arranged on the right side of the energy storage main shaft through a key, a cam component is arranged on the left side of the energy storage main shaft, a crank arm is arranged on the outer side of the right side plate and is connected with an energy storage spring, and an energy storage maintaining rotor is fixed on the energy storage maintaining shaft I through a pin, the one end of turning arm is connected and is provided with the micro-gap switch clamp plate, be provided with micro-gap switch group under the micro-gap switch clamp plate, the connection is provided with the transfer line on the micro-gap switch clamp plate, the connection is provided with the energy storage sign on the transfer line, be provided with energy storage holding shaft two, button, spacing axle three in the manual worm gear transmission group, last closing coil and the shutting electro-magnet of being provided with of modularization operating device, be provided with the separation and reunion round pin on the right side board.

The main shaft system includes separating brake energy storage holding shaft, keeps down the subassembly and keeps the subassembly, separating brake energy storage holding shaft pass through the bearing with the left side board with right side board normal running fit, keep the subassembly to be located on the energy storage main shaft, separating brake energy storage is kept epaxial to be provided with through the pin junction and keeps the stator, be provided with the spring-suspended plate on the frame, the one end connection of main shaft system is provided with the final drive turning plate, the final drive turning plate with the hook has the separating brake extension spring between the spring-suspended plate, keep turning plate, runner assembly and the extension spring that resets that the subassembly includes both sides down, be provided with the separating brake coil on the left side board, one of separating brake energy storage holding shaft is served and is provided with the separating brake push pedal, be provided with spacing axle one and spacing axle two on the left side board, the connection is provided with extension spring two on the spacing axle two.

Preferably, an opening flexible limiting device and an opening and closing auxiliary switch are arranged in the frame.

Preferably, the outer side of the frame is provided with a vacuum arc-extinguishing chamber, and an insulating pull rod and a connecting rod system are arranged in the vacuum arc-extinguishing chamber.

Preferably, the right side plate is provided with a sign and a counter, the spindle system is provided with a transmission crank arm, the transmission crank arm is connected with the sign and provided with a connecting rod, the counter is connected with the sign and provided with a counter spring, the spindle system is provided with a cam, and the spindle system is provided with a pin shaft.

Preferably, the manual worm and gear transmission set comprises a worm wheel and a worm shaft, and the worm wheel drives the transmission gear a to rotate through the one-way bearing II.

Compared with the prior art, the utility model has the beneficial effects that:

1. the circuit breaker operating mechanism is compact in structure, applicable to a vacuum switch cabinet with relatively small size and beneficial to the overall design and arrangement of the switch cabinet.

2. The circuit breaker operating mechanism has simple and clear integral structure and small contact abrasion of an interference surface, the service life of the circuit breaker operating mechanism can be prolonged to 3-8 thousands of times without improving materials, and the mechanical life of a product is greatly prolonged on the premise of saving the production cost.

3. The process difficulty in the production and assembly process is simplified.

4. The modularized mechanism is convenient to overhaul and maintain, can be integrally taken out of the frame and then installed after maintenance, and does not need to readjust the mechanical parameters of the circuit breaker.

5. The easy-damaged electric elements are convenient to replace.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

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

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the switching-off state of the present invention;

FIG. 3 is a schematic structural diagram of a closing state of the present invention;

FIG. 4 is a schematic view of the frame structure of the present invention;

FIG. 5 is a schematic structural view of a modular operating mechanism according to the present invention;

FIG. 6 is a schematic structural diagram of the energy storage spindle according to the present invention;

FIG. 7 is a schematic view of the worm gear and worm shaft configuration of the present invention;

FIG. 8 is a second structural schematic view of the modular operating mechanism of the present invention;

FIG. 9 is a schematic view of a third construction of the modular operating mechanism of the present invention;

FIG. 10 is a schematic view of the latching electromagnet position configuration of the present invention;

FIG. 11 is a side view of the modular operating mechanism of the present invention;

FIG. 12 is a schematic view of the spindle system of the frame of the present invention;

FIG. 13 is a schematic view of a partial structure of the spindle system of the present invention;

FIG. 14 is a partial second structural view of the spindle system of the present invention;

FIG. 15 is a schematic diagram of a closing holding structure according to the present invention;

FIG. 16 is a schematic structural view of the present invention from the opening state to the closing state;

FIG. 17 is a structural view of a second interlock state of the present invention;

FIG. 18 is a schematic view of a first interlock arrangement of the present invention;

FIG. 19 is a schematic view of a third interlocking structure of the present invention;

FIG. 20 is an enlarged partial view of a third interlock according to the present invention;

FIG. 21 is an enlarged partial view of the frame of the present invention;

fig. 22 is a schematic diagram of the structure of the interlocking plate of the base plate of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-chassis vehicle, 2-frame, 3-modular operating mechanism, 4-main shaft system, 5-opening flexible limiting device, 6-opening and closing auxiliary switch, 15-vacuum arc extinguish chamber, 16-insulating pull rod, 17-connecting rod system, 21-spring hanging plate, 22-opening tension spring, 23-main transmission turning plate, 31-left side plate, 32-right side plate, 33-energy storage motor, 34-middle support shaft, 35-energy storage main shaft, 36-manual worm and gear transmission set, 37-transmission gear a, 38-transmission gear b, 39-transmission gear c, 41-lower holding component, 42-upper holding component, 43-connecting rod, 44-indicator, 45-counter spring, 46-counter, 47-transmission crank arm, 48-cam, 111-bottom plate interlocking plate, 112-connecting plate, 113-side plate interlocking plate A, 114-side plate interlocking plate B, 115-limit pin, 117-tension spring, 118-closing energy storage rotating shaft limit pin, 171-pin shaft, 351-cam assembly, 352-driving wheel, 353-crank arm, 354-energy storage spring, 355-microswitch pressing plate, 356-microswitch group, 357-driving rod, 358-energy storage indicator, 361-energy storage maintaining shaft I, 362-energy storage maintaining shaft II, 363-button, 364-limit shaft III, 365-closing coil, 366-locking electromagnet, 374-one-way bearing, 375-one-way bearing II, 376-worm wheel, 377-worm shaft and 394-driving claw, 395-clutch pin, 411-crank plate, 412-reset tension spring, 413-rotating component, 421-brake-separating energy-storing retaining shaft, 422-retaining rotor, 423-limiting shaft I, 424-brake-separating push plate, 425-limiting shaft II, 426-tension spring II and 427-brake-separating coil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-19, the present invention provides a technical solution: a circuit breaker operating mechanism comprises a chassis 1 and a frame 2, wherein the chassis 1 is arranged at the bottom of the frame 2, a modular operating mechanism 3 and a main shaft system 4 are arranged in the frame 2, and the modular operating mechanism 3 and the main shaft system 4 are respectively arranged at the middle part and the middle lower part of the frame 2;

the modular operating mechanism 3 comprises a left side plate 31 and a right side plate 32, a bottom plate interlocking plate 111 is connected to the left side plate 31, a side plate interlocking plate A113 and a side plate interlocking plate B114 are installed on the frame 2, a connecting plate 112 is connected between the side plate interlocking plate A113 and the bottom plate interlocking plate 111, the side plate interlocking plate A113 and the side plate interlocking plate B114 are connected with the left side plate 31 through limit nails 115, a tension spring 117 is arranged on the front side of the side plate interlocking plate B114, and a closing energy storage rotating shaft limit nail 118 is arranged at the position of the side plate interlocking plate B114;

the left side plate 31 is provided with an energy storage motor 33, the energy storage motor 33 is provided with a transmission gear a37 in a connecting manner, a middle support shaft 34, an energy storage main shaft 35 and an energy storage retaining shaft I361 are arranged between the left side plate 31 and the right side plate 32 in a connecting manner, the energy storage main shaft 35 is positioned below the middle support shaft 34, the middle support shaft 34 and the energy storage main shaft 35 are respectively provided with a transmission gear b38 and a transmission gear c39, the inner side of the right side plate 32 is provided with a manual worm and gear transmission set 36, the output shaft of the energy storage motor 33 is connected with the transmission gear a37 through a one-way bearing 374, the manual worm and gear transmission set 36 is connected with the transmission gear a37 through a one-way bearing II 375, the transmission gear c39 is provided with a driving claw 394, the right side of the energy storage main shaft 35 is provided with a driving wheel 352 through a key, the left side of the energy storage main shaft is provided with a cam assembly 351, the outer side plate 32 is provided with a crank arm 353 and connected with an energy storage spring 354, the energy storage retaining shaft I is fixed with an energy storage retaining rotor through a pin, one end of the crank arm 353 is connected with a microswitch pressing plate 355, a microswitch group 356 is arranged below the microswitch pressing plate 355, the microswitch pressing plate 355 is connected with a transmission rod 357, the transmission rod 357 is connected with an energy storage indication plate 358, an energy storage maintaining shaft II 362, a button 363 and a limit shaft III 364 are arranged in the manual worm and gear transmission group 36, a closing coil 365 and a locking electromagnet 366 are arranged on the modular operating mechanism 3, and a clutch pin 395 is arranged on the right side plate 32.

The main shaft system 4 comprises a brake separating energy storage retaining shaft 421, a lower retaining assembly 41 and an upper retaining assembly 42, the brake separating energy storage retaining shaft 421 is in rotating fit with the left side plate 31 and the right side plate 32 through bearings, the upper retaining assembly 42 is positioned on the energy storage main shaft 35, a retaining rotor 422 is arranged on the brake separating energy storage retaining shaft 421 through pin connection, a spring hanging plate 21 is arranged on the frame 2, one end of the main shaft system 4 is connected with a main transmission turning plate 23, a brake separating tension spring 22 is hooked between the main transmission turning plate 23 and the spring hanging plate 21, the lower retaining assembly 41 comprises turning plates 411, rotating assemblies 413 and reset tension springs 412 on two sides, a brake separating coil 427 is arranged on the left side plate 31, a brake separating push plate 424 is arranged on one end of the brake separating energy storage retaining shaft 421, a first limiting shaft 423 and a second limiting shaft 425 are arranged on the left side plate 31, and a second tension spring 426 is arranged on the second limiting shaft 425.

Furthermore, a flexible brake-separating limiting device 5 and an auxiliary switch 6 are arranged in the frame 2, a vacuum arc-extinguishing chamber 15 is arranged outside the frame 2, and an insulating pull rod 16 and a connecting rod system 17 are arranged in the vacuum arc-extinguishing chamber 15.

Furthermore, a sign 44 and a counter 46 are arranged on the right side plate 32, a transmission crank arm 47 is arranged on the spindle system 4, a connecting rod 43 is connected between the transmission crank arm 47 and the sign 44, a counter spring 45 is connected between the counter 46 and the sign 44, a cam 48 is arranged on the spindle system 4, a pin shaft 171 is arranged in the spindle system 4, the manual worm and gear transmission set 36 comprises a worm wheel 376 and a worm shaft 377, and the worm wheel 376 drives a transmission gear a37 to rotate through a one-way bearing two 375.

One specific application of this embodiment is: the utility model relates to an operating mechanism of a circuit breaker, which comprises a frame 2, wherein a chassis 1 is arranged at the bottom of the frame, and a modular operating mechanism 3 and a main shaft system 4 are arranged in the frame and can be pushed in or withdrawn along with the chassis. The middle lower part of the frame 2 is transversely provided with a main shaft system 4 which is centrally loaded with a modularized operating mechanism 3. The modularized operating mechanism 3 drives the main shaft system 4 to rotate through the cam component 351 of the modularized operating mechanism so as to drive the insulating pull rod 16 to move up and down through the connecting rod system 17 to realize the closing and opening of the contact of the vacuum arc extinguish chamber 15, an auxiliary closing and opening switch 6 is further arranged in the frame, the driving end of the switch is connected to the main shaft, after the closing and opening process is finished, the main shaft rotates in place to drive the auxiliary closing and opening switch to complete the switching between a normally closed normally open contact, and in order to avoid mechanical vibration generated by rigid limiting during opening, the main shaft is provided with a flexible opening limiting device 5;

the modularized operating mechanism 3 is composed of an energy storage module, a switching-on/off device and an additional indicating device, wherein the energy storage module comprises an electric/manual energy storage device, an energy storage retaining device, a switching-on device and an additional indicating device.

When the energy storage motor 33 is powered on, the motor output shaft rotates counterclockwise to drive the one-way bearing 374, so as to drive the transmission gear a37 to rotate. The one-way bearing 375 does not rotate the worm gear 376 due to the one-way clutch, and thus does not affect the manual worm gear set 36. In the manual energy storage process, a special energy storage handle is inserted into the hexagonal surface on the worm shaft 377 of the manual worm and gear transmission group 36 to rotate clockwise, so that the worm wheel is driven to rotate anticlockwise, and the worm wheel 376 drives the transmission gear a37 to rotate through the one-way bearing 375. At the moment, the one-way bearing 374 does not affect the output shaft of the energy storage motor due to the one-way clutch. The transmission gear a37 drives the transmission gear c39 to rotate anticlockwise through the transmission gear b38, at the moment, the driving claw 394 on the transmission gear c39 drives the driving wheel 352 arranged on the energy storage main shaft to rotate, so that the energy storage main shaft 35 is driven to rotate, the energy storage main shaft 35 rotates to drive the crank arm 353 to rotate, the energy storage spring 354 is stretched, and energy storage is achieved. After the crank arm 353 rotates about 190 degrees, the energy storage spring 354 stores energy in place, and at the moment, the crank arm 353 drives the microswitch pressing plate 355 to press the microswitch set 356 to cut off the power supply of the motor. Meanwhile, a clutch pin 395 arranged on the right side plate 32 acts on a driving claw 394 to enable the driving claw to be separated from contact with a driving wheel 352 to realize clutch, when the energy storage spring 354 stores energy in place, the crank arm 353 has a tendency of releasing the stored energy to drive the energy storage main shaft 35 to rotate under the action of the energy storage spring 354, but the cam component 351 arranged on the energy storage main shaft is matched with the energy storage maintaining rotor to prevent the stored energy from being stored, the closing coil 365 is powered on to act, or when the closing coil is manually pressed, a striking head on the coil pushes a button 363 to realize counterclockwise rotation of the energy storage maintaining shaft 362, so that the energy storage maintaining rotor is separated from contact with the cam component 351 to remove the prevention of the energy storage spring to release the stored energy, and the energy storage is removed. After the energy storage spring is released, the energy storage maintaining shaft 362 rotates clockwise under the action of a torsion spring arranged on the energy storage maintaining shaft and restores to the original position through a limiting shaft 364 to prepare for the next energy storage maintenance, and a locking electromagnet 366 can be arranged on the left side plate 31 to realize closing and locking;

the opening device is linked with the closing device and comprises an opening energy storage device, an opening energy storage retaining device and an opening energy storage relieving device, the opening energy storage device mainly comprises an opening tension spring 22, one end of the opening tension spring is fixed on a spring hanging plate 21 arranged on the frame 2, the other end of the opening tension spring is hooked on a main transmission turning plate 23, and along with the closing of the breaker, the main shaft 4 rotates clockwise to drive the main transmission turning plate 23 to be linked and stretch the opening tension spring 22 to realize the opening energy storage; the brake separating energy storage keeping device mainly comprises a keeping lower component 41 arranged on a main shaft 4, a keeping upper component 42 and a keeping hit-and-hit component 422 arranged in a mechanism, wherein the keeping lower component 41 also comprises two side turning plates 411, a rotating component 413 and a reset tension spring 412, the keeping lower component 41 rotates along with the main shaft in the process of closing, the rotating component 413 rotates anticlockwise and moves along the arc surface under the action of the keeping upper component 42, when the closing is in place, the rotating component 413 is reset under the action of the reset tension spring 412 and is buckled on the lower end surface of the keeping upper component 42, the keeping upper component 42 has the trend of counterclockwise rotation and buckle releasing under the action of the spring force of the brake separating, but is prevented by the keeping hit-and-hit component 422, and energy storage keeping is realized; the brake separating energy storage releasing device comprises a brake separating coil 427, a brake separating push plate 424 and accessories, wherein the brake separating coil 427 is electrified or the brake separating push plate 424 is manually pressed, the brake separating push plate 424 enables the brake separating energy storage maintaining shaft 421 to rotate anticlockwise, the energy storage maintaining starter 422 is enabled to be separated from the upper maintaining component 42, the energy storage spring is released from being stopped, and energy storage releasing is achieved. After the energy storage spring is released, the opening energy storage maintaining shaft 421 rotates clockwise under the action of the torsion spring mounted on the opening energy storage maintaining shaft and restores to the original position through the limiting shaft 423 to prepare for meeting the next energy storage maintenance;

the energy storage indication plate 358 is connected with the microswitch pressing plate 355 through a transmission rod 357, and acts simultaneously when the operating mechanism stores energy in place and presses down, so that energy storage indication is realized. When the energy storage spring releases energy, the pressure plate of the microswitch rotates anticlockwise under the action of the torsion spring on the pressure plate of the microswitch. The pressing hold of the microswitch is released. Meanwhile, the energy storage indicating plate is driven to rotate, the indicating position is switched to the non-energy storage indicating position, and the limiting is realized through the middle supporting shaft 34. The switching on/off state indication comprises a transmission crank arm 47 arranged on the main shaft 4, an indication board 44 and a counter 46 arranged on the right side plate 32, a connecting rod 43 connecting the indication board 44 and the transmission crank arm 47, and a counter spring 45 linking the counter 46 and the indication board 44. As shown in the figure, in the closing state, the transmission crank arm 47 rotates along with the main shaft 4 to drive the connecting rod 43 to push the indicator 44 to move clockwise, so that closing indication is realized, at the moment, the counter spring 45 is in a relaxed state, and the counter 46 does not act. When the breaker is in brake-off transmission, the transmission crank arm 47 rotates clockwise along with the main shaft 4 to drive the indicating plate 44 to move anticlockwise downwards, so that brake-off indication is realized. Meanwhile, the spring 45 of the counter is stressed and stretched to drive the counter to count, so that the opening counting is realized;

the circuit breaker operating mechanism is further designed to comprise a first interlocking device, a second interlocking device and a third interlocking device. The first interlocking device is linked with the chassis car and the closing device, so that the circuit breaker is prevented from being closed when in a non-working position or a testing position, and the second interlocking device is linked with the closing device and the main shaft, so that the circuit breaker is prevented from being closed for the second time in a closing state. The third interlocking device is matched with the chassis vehicle by the main shaft system to prevent the chassis vehicle from shaking in and out under the switching-on state;

the first interlocking is linked with the chassis and the closing device, a closing driving device of the circuit breaker manually or by coil electric action enables the energy storage holding shaft 362 to rotate by pushing the closing push plate 363 to drive the holding pawl to rotate so as to release the energy storage spring to carry out closing operation, when the chassis is in a working or testing position, the bottom plate interlocking plate 111 falls down, the side plate interlocking plate A113 falls down along with the connecting plate 112, the upper end of the side plate interlocking plate A113 cannot push the side plate interlocking plate B114 upwards to interfere with the limit pin 118 on the energy storage holding shaft 363, and closing operation cannot be influenced; when the chassis 1 leaves the working or testing position, the bottom plate interlocking plate 111 is lifted up to lift up the side plate interlocking plate a113 by the link plate 112, and the upper end of the side plate interlocking plate a113 pushes the side plate interlocking plate B114 upward to interfere the upper end thereof with the stopper pin 118 on the energy storage holding shaft 362, thereby limiting the closing operation. Meanwhile, the tension spring 117 is stretched to store energy, and when the chassis arrives at the working and testing position, the side plate interlocking plate B114 moves downwards to reset under the action of the tension spring 117. Without interfering with the rotation of the stored energy holding shaft 362. Preparing to meet the next closing operation;

the second interlocking device is interlocked with the main shaft, and after the breaker is switched on, the specific working process is that the cam 48 rotates along with the main shaft 4 when the breaker is switched on, and the side plate interlocking plate B114 is pushed to move upwards. Meanwhile, the tension spring 117 is stretched to store energy, and when the switch is closed in place, the left bending position of the side plate interlocking plate B114 is positioned on the rotating track of the limit nail 118. The rotation of the energy storage maintaining shaft 362 is interfered, so that the cam component 351 is prevented from being separated from the maintaining rotor, and the occurrence of secondary closing is effectively prevented. When the breaker is opened, the cam 48 is rotated along with the main shaft 4 to be out of contact with the side plate interlocking plate B114, and the side plate interlocking plate B114 moves downwards to be reset under the action of the tension spring 117. Without interfering with the rotation of the stored energy holding shaft 362. Preparing to meet the next closing operation;

the third interlocking device is linked with the chassis vehicle through the main shaft system. When the circuit breaker is in a closing state, the pin 171 presses down on the bottom plate interlocking plate 111 to prevent the chassis bottom plate interlocking plate 111 from bouncing up, so that the shaking-in and shaking-out operation of the chassis is locked, and only when the pin 171 follows the connecting plate system 17 to move upwards in a switching-off state, the locking is released.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims (5)

1. A circuit breaker operating mechanism comprising a chassis (1) and a frame (2), characterized in that: the chassis truck (1) is arranged at the bottom of the frame (2), a modular operating mechanism (3) and a spindle system (4) are arranged in the frame (2), and the modular operating mechanism (3) and the spindle system (4) are respectively arranged at the middle part and the middle-lower part of the frame (2);

the modularized operating mechanism (3) comprises a left side plate (31) and a right side plate (32), a bottom plate interlocking plate (111) is connected to the left side plate (31), a side plate interlocking plate A (113) and a side plate interlocking plate B (114) are installed on the frame (2), a connecting plate (112) is connected between the side plate interlocking plate A (113) and the bottom plate interlocking plate (111), the side plate interlocking plate A (113) and the side plate interlocking plate B (114) are connected with the left side plate (31) through limit pins (115), a tension spring (117) is arranged on the front side of the side plate interlocking plate B (114), and a closing energy storage rotating shaft limit pin (118) is arranged at the position of the side plate interlocking plate B (114);

the energy storage motor (33) is installed and arranged on the left side plate (31), a transmission gear a (37) is connected and arranged on the energy storage motor (33), a middle supporting shaft (34), an energy storage main shaft (35) and an energy storage maintaining shaft I (361) are connected and arranged between the left side plate (31) and the right side plate (32), the energy storage main shaft (35) is located below the middle supporting shaft (34), the middle supporting shaft (34) and the energy storage main shaft (35) are respectively provided with a transmission gear b (38) and a transmission gear c (39), a manual worm and gear transmission set (36) is installed and arranged on the inner side of the right side plate (32), an output shaft of the energy storage motor (33) is connected with the transmission gear a (37) through a one-way bearing (374), and the manual worm and gear transmission set (36) is connected with the transmission gear a (37) through a one-way bearing II (375), the energy storage device is characterized in that a driving claw (394) is arranged on the transmission gear c (39), a driving wheel (352) is arranged on the right side of the energy storage main shaft (35) through a key, a cam component (351) is arranged on the left side of the energy storage main shaft, a crank arm (353) is arranged on the outer side of the right side plate (32) and connected with an energy storage spring (354), an energy storage maintaining rotor is fixed on the energy storage maintaining shaft I (361) through a pin, one end of the crank arm (353) is connected with a micro switch pressing plate (355), a micro switch group (356) is arranged below the micro switch pressing plate (355), a transmission rod (357) is connected on the micro switch pressing plate (355), an energy storage indicator (358) is connected on the transmission rod (357), an energy storage maintaining shaft II (362), a button (363) and a limiting shaft III (364) are arranged in the manual worm gear transmission group (36), a closing coil (365) and a locking electromagnet (366) are arranged on the modular operation mechanism (3), a clutch pin (395) is arranged on the right side plate (32),

the main shaft system (4) comprises a brake separating energy storage retaining shaft (421), a lower retaining component (41) and an upper retaining component (42), the brake separating energy storage retaining shaft (421) is in running fit with the left side plate (31) and the right side plate (32) through bearings, the upper retaining component (42) is positioned on the energy storage main shaft (35), a retaining rotor (422) is arranged on the brake separating energy storage retaining shaft (421) through pin connection, a spring hanging plate (21) is arranged on the frame (2), one end of the main shaft system (4) is connected with a main transmission crank plate (23), a brake separating tension spring (22) is hooked between the main transmission crank plate (23) and the spring hanging plate (21), the lower retaining component (41) comprises crank plates (411) on two sides, a rotating component (413) and a reset tension spring (412), a brake separating coil (427) is arranged on the left side plate (31), one end of the brake separating energy storage retaining shaft (421) is provided with a brake separating push plate (424), the left side plate (31) is provided with a first limiting shaft (423) and a second limiting shaft (425), and the second limiting shaft (425) is connected with a second tension spring (426).

2. A circuit breaker operating mechanism according to claim 1 wherein: and the frame (2) is internally provided with a flexible brake-separating limiting device (5) and an auxiliary switch (6) for opening and closing.

3. A circuit breaker operating mechanism according to claim 1 wherein: the outer side of the frame (2) is provided with a vacuum arc-extinguishing chamber (15), and an insulating pull rod (16) and a connecting rod system (17) are arranged in the vacuum arc-extinguishing chamber (15).

4. A circuit breaker operating mechanism according to claim 1 wherein: be provided with sign (44), counter (46) on right side board (32), be provided with transmission connecting lever (47) on main shaft system (4), transmission connecting lever (47) with it is provided with connecting rod (43) to connect between sign (44), counter (46) with it is provided with counter spring (45) to connect between sign (44), be provided with cam (48) on main shaft system (4), be provided with round pin axle (171) in main shaft system (4).

5. A circuit breaker operating mechanism according to claim 1 wherein: the manual worm and gear transmission set (36) comprises a worm wheel (376) and a worm shaft (377), and the worm wheel (376) drives the transmission gear a (37) to rotate through the one-way bearing II (375).

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