CN111341605A - Circuit breaker and operating mechanism thereof - Google Patents
Circuit breaker and operating mechanism thereof Download PDFInfo
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- CN111341605A CN111341605A CN201811550136.4A CN201811550136A CN111341605A CN 111341605 A CN111341605 A CN 111341605A CN 201811550136 A CN201811550136 A CN 201811550136A CN 111341605 A CN111341605 A CN 111341605A
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- output shaft
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- closing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
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- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a circuit breaker and an operating mechanism of the circuit breaker, which can solve the problem of poor action accuracy caused by abrasion of a closing buckle plate in the operating mechanism in the prior art. The circuit breaker includes explosion chamber and operating mechanism, operating mechanism is provided with combined floodgate buckle, output shaft and energy storage axle including the frame that forms the operating mechanism main part on the frame, is equipped with the output shaft connecting lever on the output shaft, is provided with the energy storage shaft cam that is used for driving the action of output shaft connecting lever on the energy storage axle, and the output shaft connecting lever has the connecting rod linking arm that is used for supplying auxiliary switch connecting rod to connect, is used for the cam cooperation arm with energy storage shaft cam adaptation, still is equipped with the buckle cooperation part that is used for promoting combined floodgate buckle to reset at combined floodgate in-process on the output shaft connecting lever, the connecting rod connecting part end of output shaft connecting lever is provided with the gyro wheel that is used for with combined flood.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker and an operating mechanism of the circuit breaker.
Background
In the prior art, a spring operating mechanism capable of driving the breaker to open and close is arranged in the breaker, and the spring operating mechanism is easy to cause a 'false closing' phenomenon that the breaker is closed again in a closing state under a fault state or in misoperation, and the subsequent work of the breaker is further influenced by the 'false closing' phenomenon. In order to avoid the phenomenon of 'false closing', a locking device is arranged on an operating mechanism in the circuit breaker, and the device can not perform closing operation on the mechanism in a closing state mainly in a mechanical interlocking mode. The operating mechanism in the prior art is also provided with a closing tripping device for providing operating energy for closing, the closing tripping device is composed of a closing tripping pawl, a closing latch and a closing electromagnet, and a latch swing arm of the closing latch rotates on the frame through pushing of the closing electromagnet so as to limit the closing tripping pawl in an energy storage keeping state and release the limit of the closing tripping pawl in a closing state. The existing closing tripping device of the operating mechanism can only realize the functions of energy storage keeping and closing tripping, and the closing locking function required by the operating mechanism can only be realized by a locking device independently arranged in the operating mechanism.
The operating mechanism comprises a frame, a pawl and a tripping device, wherein the pawl and the tripping device are assembled on the frame, the tripping device comprises a tripping bracket fixedly or integrally arranged on the frame, the tripping bracket is rotatably assembled on the frame around mutually parallel axial directions and is provided with the pawl and a latch for contacting and limiting the pawl under the action of an operating rod or an electromagnet, a latch swinging arm which is suspended in the radial direction of the rotating axial direction is fixedly or integrally arranged on the latch, and the limit positions at two sides of the swinging stroke of the latch swinging arm on the tripping bracket are respectively a locking position corresponding to the situation that the latch is pressed on the pawl to limit the pawl by the latch and an unlocking position for releasing the limit of the pawl when the latch is pushed by the operating rod or the electromagnet. The tripping device comprises a rigid locking piece which is movably assembled on the tripping support and used for blocking and avoiding in the swinging direction of the unlocking position of the locking arm when the locking arm is positioned at the locking position, a disengagement preventing structure which is used for preventing the locking piece from disengaging from the locking arm when the locking piece blocks the locking arm is arranged on the tripping support, and a force applying structure which is used for switching the blocking and avoiding of the locking piece on the locking arm.
However, the locking device is separately arranged in the operating mechanism in order to realize the closing and locking functions, and the latch and the locking device in the operating mechanism are separately arranged, so that the number of parts of the operating mechanism is increased, the production cost is increased, and the overall structure of the operating mechanism is more complicated.
In order to solve the problem that the pawl and the locking device are arranged in a split mode in the prior art, patent documents with the publication number of CN204348535U and the publication number of 2015.05.20 disclose a spring operating mechanism and a circuit breaker using the spring operating mechanism, wherein the spring operating mechanism comprises a closing half shaft, an output shaft and an energy storage shaft provided with an energy storage shaft cam, the energy storage shaft cam is provided with an energy storage retaining roller, the spring operating mechanism further comprises a closing buckle plate, the closing buckle plate comprises a buckle plate body, a first buckle plate arm and a second buckle plate arm, the first buckle plate arm and the second buckle plate arm are arranged on the buckle plate body, the output shaft is provided with a locking bulge, the first buckle plate arm is provided with a bulge matching side face matched with the bulge, the second buckle plate arm is provided with a roller matching side face matched with the roller, and the locking bulge matching side face is in blocking matching with the bulge matching side face so that the roller matching side face is in blocking matching with the energy storage retaining roller and an opening working position for opening the first buckle plate.
The closing buckle plate is also provided with a third buckle plate arm positioned between the first buckle plate arm and the second buckle plate arm, the side surface of one side, opposite to the first buckle plate arm, of the first buckle plate arm and the third buckle plate arm is a convex matching side surface of an arc-shaped structure, the side surface of one side, opposite to the first buckle plate arm, of the third buckle plate arm is provided with an arc-shaped connecting lever matching side surface section, the convex matching side surfaces on the first buckle plate arm and the first buckle plate arm are matched with the locking protrusion on the output shaft connecting lever, the roller matching side surface on the second buckle plate arm is matched with the energy storage maintaining roller on the energy storage shaft cam, and the half shaft matching side surface on the second buckle plate arm is matched with the closing half shaft, so that the closing buckle plate has an energy storage limit position. The purpose of setting up the third buckle arm between first buckle arm and second buckle arm is: connecting lever cooperation side section on the third buckle arm can with the spacing cooperation of output shaft connecting lever, relies on the sliding friction on third buckle arm and output shaft connecting lever surface to carry out spacing cooperation to closing the buckle to the realization prevents the excessive instantaneous rotation of closing the buckle. After the operating mechanism completes the closing, the third buckle plate arm is pushed against the output shaft crank arm, and the closing buckle plate is at the reset position at the moment.
One end of the output shaft connecting lever is connected with a connecting rod, the connecting rod is in transmission connection with the switch, the end of the output shaft connecting lever, which is connected with the connecting rod, is a connecting rod connecting arm, the other end of the output shaft connecting lever is matched with the energy storage shaft cam, and the end of the output shaft connecting lever is a cam matching arm of the output shaft connecting lever. In the process of closing the door by the spring operating mechanism, the closing buckle plate acts first to release the energy storage shaft cam, the energy storage shaft cam is contacted with the cam matching arm of the output shaft connecting lever and drives the output shaft connecting lever to rotate, and the problem that exists is that: the locking protrusion on the output shaft connecting lever and the first buckle plate arm have two positions, namely an initial position corresponding to the tail end of the first buckle plate arm and a final position corresponding to the root of the first buckle plate arm respectively, the locking protrusion moves to the final position from the initial position, and is always in sliding friction with the protrusion matching side face of the first buckle plate arm, and the locking protrusion has a longer friction stroke.
Disclosure of Invention
The invention aims to provide an operating mechanism of a circuit breaker, which can solve the problem of poor action accuracy caused by abrasion of a closing buckle plate in the operating mechanism in the prior art, and the invention also aims to provide the circuit breaker using the operating mechanism, which has the advantages of small closing action friction and accurate closing action.
In order to achieve the purpose, the circuit breaker adopts the following technical scheme:
the circuit breaker, including explosion chamber and operating mechanism, operating mechanism is provided with closing buckle, output shaft and energy storage axle including the frame that forms the operating mechanism main part on the frame, is equipped with the output shaft connecting lever on the output shaft, is provided with the energy storage shaft cam that is used for driving the action of output shaft connecting lever on the energy storage axle, and the output shaft connecting lever has the connecting rod linking arm that is used for supplying auxiliary switch connecting rod to connect, is used for the cam cooperation arm with energy storage shaft cam adaptation, still is equipped with the buckle cooperation part that is used for promoting closing buckle to reset at the combined floodgate in-process on the output shaft connecting lever, the connecting rod connecting part end of output shaft connecting lever is provided with the gyro wheel that is used for with closing buckle adaptation, buckle.
The beneficial effects are that: the connecting rod connecting arm of the output shaft connecting lever is provided with the roller, in the process of matching the closing buckle plate and the output shaft connecting lever, two side faces of the closing buckle plate and the output shaft connecting lever which are arranged in opposite directions are converted into rolling friction generated by the roller through the roller from original sliding friction, friction force and abrasion are reduced, the sizes of the closing buckle plate and the output shaft connecting lever still have accurate shapes in the repeated matching process of the closing buckle plate and the output shaft connecting lever, and closing action is kept to be accurate.
Furthermore, the roller and a connecting rod connected to the crank arm of the output shaft are positioned on the same hinge shaft.
The beneficial effects are that: the gyro wheel is in on the same articulated shaft with the hinged end of connecting rod, can make the structure compacter to the gyro wheel is far away from the axis of rotation distance of output shaft turning arm, has increased the arm of force length between gyro wheel and the output shaft turning arm, has reduced frictional force, makes the frictional force stroke shorten, can reduce the wearing and tearing between combined floodgate buckle and the output shaft turning arm better.
Furthermore, the connecting rod connecting arm of the output shaft connecting lever is formed by two supporting plates which are arranged in parallel, and the hinged end of the connecting rod and the roller are positioned between the two supporting plates.
The beneficial effects are that: a articulated shaft connection for articulated gyro wheel and connecting rod is between two backup pads, and the backup pad has increased the strong point of this articulated shaft, has improved gyro wheel and connecting rod pivoted stability.
Furthermore, the operating mechanism still includes the limit structure who is used for injecing the reset position of combined floodgate buckle, limit structure includes the backing pin that sets up on the frame along the face direction of perpendicular to combined floodgate buckle, still including setting up the spacing groove on the border of the reverse output shaft one side of combined floodgate buckle, the spacing groove has the cell wall that is in reset position with the backing pin cooperation so that combined floodgate buckle, still has the space of dodging combined floodgate buckle when closing a floodgate.
The beneficial effects are that: the stop pin and the limiting groove are matched, so that the problem that the switching-on pinch plate directly slides and rubs with the output shaft crank arm is solved, the abrasion of the switching-on pinch plate is reduced, the matching precision of the switching-on pinch plate with the output shaft crank arm and the energy storage shaft cam can be ensured, and the accuracy of switching-on action is ensured.
Furthermore, the closing buckle plate comprises a first buckle plate arm and a second buckle plate arm, wherein the first buckle plate arm is used for being in pushing fit with the output shaft crank arm, the second buckle plate arm is used for being matched with the energy storage shaft cam, and the first buckle plate arm and the second buckle plate arm are arranged to enable the closing buckle plate in a free state to reset under the action of self gravity.
The beneficial effects are that: the height of the second buckle arm is set to be higher than that of the first buckle arm, and the closing buckle has a movement trend that the first buckle arm is arranged to turn to one end of the second buckle arm in a free state, so that the closing buckle can be automatically reset, a reset component does not need to be arranged in the operating mechanism, the structure is simplified, and the cost is reduced.
In order to achieve the purpose, the operating mechanism of the circuit breaker adopts the following technical scheme:
the operating mechanism of the circuit breaker comprises a frame forming an operating mechanism main body, wherein a closing buckle plate, an output shaft and an energy storage shaft are arranged on the frame, an output shaft connecting arm is arranged on the output shaft, an energy storage shaft cam used for driving the output shaft connecting arm to act is arranged on the energy storage shaft, the output shaft connecting arm is provided with a connecting rod connecting arm used for connecting an auxiliary switch connecting rod and a cam matching arm used for being matched with the energy storage shaft cam, a buckle plate matching part used for pushing the closing buckle plate to reset in a closing process is further arranged on the output shaft connecting arm, a roller used for being matched with the closing buckle plate is arranged at the tail end of the connecting rod connecting part of the output shaft connecting arm, and the.
The beneficial effects are that: the connecting rod connecting arm of the output shaft connecting lever is provided with the roller, in the process of matching the closing buckle plate and the output shaft connecting lever, two side faces of the closing buckle plate and the output shaft connecting lever which are arranged in opposite directions are converted into rolling friction generated by the roller through the roller from original sliding friction, friction force and abrasion are reduced, the sizes of the closing buckle plate and the output shaft connecting lever still have accurate shapes in the repeated matching process of the closing buckle plate and the output shaft connecting lever, and closing action is kept to be accurate.
Furthermore, the roller and a connecting rod connected to the crank arm of the output shaft are positioned on the same hinge shaft.
The beneficial effects are that: the gyro wheel is in on the same articulated shaft with the hinged end of connecting rod, can make the structure compacter to the gyro wheel is far away from the axis of rotation distance of output shaft turning arm, has increased the arm of force length between gyro wheel and the output shaft turning arm, has reduced frictional force, makes the frictional force stroke shorten, can reduce the wearing and tearing between combined floodgate buckle and the output shaft turning arm better.
Furthermore, the connecting rod connecting arm of the output shaft connecting lever is formed by two supporting plates which are arranged in parallel, and the hinged end of the connecting rod and the roller are positioned between the two supporting plates.
The beneficial effects are that: a articulated shaft connection for articulated gyro wheel and connecting rod is between two backup pads, and the backup pad has increased the strong point of this articulated shaft, has improved gyro wheel and connecting rod pivoted stability.
Furthermore, the operating mechanism still includes the limit structure who is used for injecing the reset position of combined floodgate buckle, limit structure includes the backing pin that sets up on the frame along the face direction of perpendicular to combined floodgate buckle, still including setting up the spacing groove on the border of the reverse output shaft one side of combined floodgate buckle, the spacing groove has the cell wall that is in reset position with the backing pin cooperation so that combined floodgate buckle, still has the space of dodging combined floodgate buckle when closing a floodgate.
The beneficial effects are that: the stop pin and the limiting groove are matched, so that the problem that the switching-on pinch plate directly slides and rubs with the output shaft crank arm is solved, the abrasion of the switching-on pinch plate is reduced, the matching precision of the switching-on pinch plate with the output shaft crank arm and the energy storage shaft cam can be ensured, and the accuracy of switching-on action is ensured.
Furthermore, the closing buckle plate comprises a first buckle plate arm and a second buckle plate arm, wherein the first buckle plate arm is used for being in pushing fit with the output shaft crank arm, the second buckle plate arm is used for being matched with the energy storage shaft cam, and the first buckle plate arm and the second buckle plate arm are arranged to enable the closing buckle plate in a free state to reset under the action of self gravity.
The beneficial effects are that: the height of the second buckle arm is set to be higher than that of the first buckle arm, and the closing buckle has a movement trend that the first buckle arm is arranged to turn to one end of the second buckle arm in a free state, so that the closing buckle can be automatically reset, a reset component does not need to be arranged in the operating mechanism, the structure is simplified, and the cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the breaker in the present invention when the breaker is not in the open state;
FIG. 2 is a schematic diagram of the breaker in the present invention in the state of energy stored in the opening;
FIG. 3 is a schematic diagram of a state of the circuit breaker during closing and energy storage;
FIG. 4 is a schematic structural diagram of a closing buckle of the circuit breaker according to the present invention;
FIG. 5 is a schematic structural diagram of an output shaft crank arm of the circuit breaker according to the present invention;
fig. 6 is a schematic structural view of an energy storage shaft cam of the circuit breaker according to the present invention.
In the figure: 1. an energy storage shaft cam; 11. an energy storage maintaining roller; 2. a frame; 3. an output shaft crank arm; 31. a crank arm roller; 32. a connecting rod; 4. closing a buckle plate; 41. a first buckle arm; 411. a latching mating side; 412. a limiting groove; 42. a second buckle arm; 421. a half shaft mating side; 422. the roller is matched with the side surface; 5. a pinch plate rotating shaft; 6. a stop pin; 7. and a switching-on half shaft.
Detailed Description
The circuit breaker and the operation mechanism of the circuit breaker according to the present invention will be described with reference to the accompanying drawings.
The invention provides a circuit breaker, which comprises an arc extinguish chamber and an operating mechanism for controlling the action of the arc extinguish chamber, wherein the operating mechanism comprises an output shaft, an output shaft connecting lever arranged on the output shaft, and a closing buckle plate matched with the output shaft connecting lever, in order to reduce the friction loss between the output shaft connecting lever and the closing buckle plate, a rolling structure for realizing the matching of the output shaft connecting lever and the closing buckle plate in a relative rolling motion mode is arranged between one side of the output shaft connecting lever close to the closing buckle plate and the corresponding side wall of the closing buckle plate, and the output shaft connecting lever and the closing buckle plate can replace the sliding friction in the original motion into rolling friction through the rolling structure, so that the abrasion of the output shaft connecting lever and the closing buckle plate in size is reduced, and the action of.
As shown in fig. 1 to 6, the embodiment of the circuit breaker of the present invention: the operating mechanism comprises a frame 2 as a main body of the operating mechanism, and a switching-on half shaft 7, an output shaft and an energy storage shaft which drive the output shaft to enable the output shaft to output switching-on action outwards are respectively arranged on the frame 2. The closing half shaft 7 is a rotor with a straight surface on one side and a cambered surface on the other side, the rotor is formed by splitting along the axial direction of the cylinder, a closing baffle rotating along with the closing half shaft 7 is arranged on the closing half shaft 7, and an electromagnet in movable fit with the closing baffle is arranged on the frame 2 corresponding to the closing baffle. The energy storage shaft cam 1 rotating along with the energy storage shaft is arranged on the energy storage shaft, as shown in fig. 6, an energy storage keeping roller 11 is arranged on the inner side face of the energy storage shaft cam 1, the energy storage keeping roller 11 can rotate under the driving of the energy storage shaft and the energy storage shaft cam 1, and can be matched with other structures in a pushing mode in the rotating process, the energy storage keeping roller 11 can also rotate around the axis of the energy storage shaft cam 11, wherein the energy storage shaft rotates around the anticlockwise direction, and therefore the energy storage shaft cam 1 and the energy storage keeping roller 11 rotate in the anticlockwise direction.
An output shaft is arranged below the energy storage shaft, and the output shaft can output closing actions outwards when rotating, so that closing of the circuit breaker is realized. As shown in fig. 2 and 3, the output shaft includes the axis body and the output shaft connecting lever 3 that sets up on the axis body and follow-up with the axis body, as shown in fig. 5, output shaft connecting lever 3 includes the first overhanging arm that is close to energy storage axle one side and realizes output shaft connecting lever 3 and energy storage axle cam 1 complex cam cooperation arm, output shaft connecting lever 3 still includes the second overhanging arm that sets up dorsad with first overhanging arm, the second overhanging arm is the connecting rod linking arm, be connected with connecting rod 32 on it, connecting rod 32 is connected with the transmission of second overhanging arm, can follow the action of second overhanging arm at the wobbling in-process of second overhanging arm, thereby realize closing a floodgate.
The output shaft connecting lever 3 is provided with a buckle plate matching part used for pushing the closing buckle plate to reset in the closing process, namely a connecting lever roller 31 arranged on the second overhanging arm, in addition, the connecting lever roller 31 also forms a rolling structure positioned on the output shaft connecting lever 3, and when the output shaft connecting lever 3 is in pushing matching with the closing buckle plate 4, the connecting lever roller 31 can realize the relative rolling matching of the second overhanging arm and the closing buckle plate 4. The hinged end of connecting rod 32 and the coaxial arrangement of connecting lever gyro wheel 31, thereby make output shaft connecting lever 3's structure compacter, connecting lever gyro wheel 31 is in on the same articulated shaft with the hinged end of connecting rod 32, can make the structure compacter, and connecting lever gyro wheel 31 is far away from the axis of rotation distance of output shaft connecting lever 3, the arm of force length between connecting lever gyro wheel 31 and the output shaft connecting lever 3 has been increased, frictional force has been reduced, make the frictional force journey shorten, can reduce the wearing and tearing between closing buckle and the output shaft connecting lever better. And on the connecting rod linking arm of output shaft connecting lever 3, be provided with two parallel arrangement's backup pad for articulated shaft connection between two backup pads of articulated connecting lever gyro wheel 31 and connecting rod 32, the backup pad has increased the strong point of this articulated shaft, has improved connecting lever gyro wheel 31 and connecting rod 32 pivoted stability.
The energy storage device comprises a closing half shaft 7, a pinch plate rotating shaft 5 and a closing pinch plate 4 rotating along with the pinch plate rotating shaft 5 are arranged in front of the closing half shaft 7 and the energy storage shaft, the rotating axis of the closing pinch plate 4 is parallel to the rotating axis of the output shaft and the energy storage shaft, the closing pinch plate 4 comprises two parts, namely a first pinch plate arm 41 close to one side of the output shaft and a second pinch plate arm 42 close to the energy storage shaft in the rotating process, and a locking matching side surface 411 matched with a crank arm roller 31 serving as a locking structure is arranged on the first pinch plate arm 41. The second buckle arm 42 is provided with a half shaft engaging side 421 engaging with the closing half shaft 7 and a roller engaging side 422 engaging with the energy storage maintaining roller 11, which are located above the second buckle arm 42. The first buckle arm 41 is lower than the second buckle arm 42, and in a free state where the closing buckle 4 is not limited, the first buckle arm 41 has a tendency to move from one side of the first buckle arm 41 to one side of the second buckle arm 42.
In addition, in order to ensure that the closing pinch plate 4 does not rotate excessively, a limiting structure for limiting the reset position of the closing pinch plate 4 is arranged between the closing pinch plate 4 and the frame 2, as shown in fig. 4, the limiting structure comprises a stop pin 6 arranged along the direction perpendicular to the plate surface of the closing pinch plate 4, and further comprises a limiting groove 412 arranged on the edge of the closing pinch plate 4, which is back to one side of the output shaft, wherein the limiting groove 412 is provided with a groove wall matched with the stop pin 6 to enable the closing pinch plate 4 to be in the reset position, and an avoiding space for avoiding the closing pinch plate 4 during closing. Because the closing buckle plate 4 is pushed by the energy storage maintaining roller 11 on the energy storage shaft to move, the closing buckle plate 4 and the energy storage shaft rotate oppositely, the energy storage shaft rotates along the anticlockwise direction, the closing buckle plate 4 rotates along the clockwise direction, and therefore, on the limiting groove 412, the stop pin 6 is in stop fit with the left side of the limiting groove 412 to limit the rotation of the closing buckle plate 4. Use backing pin 6 and spacing groove 412 to form limit structure, backing pin 6 is fixed on frame 2, spacing groove 412 is seted up and is moved along with closing buckle 4 on closing buckle 4 and can dodge closing buckle 4, make limit structure compacter, and use backing pin 6 and spacing groove 412 cooperation, avoided closing buckle 4 direct with output shaft turning arm 3 take place the problem of sliding friction, the wearing and tearing of closing buckle 4 have been reduced, can guarantee closing buckle 4 respectively with output shaft turning arm 3, the cooperation precision of energy storage shaft cam 1, the accuracy of combined floodgate action has been guaranteed.
When a technician uses the circuit breaker provided by the invention, the energy storage shaft rotates anticlockwise, the energy storage maintaining roller 11 on the energy storage shaft cam 1 is in contact with the roller matching side surface 422 on the closing buckle plate 4 in the process of rotating along with the energy storage shaft cam 1, the energy storage maintaining roller 11 pushes the roller matching side surface 422 to drive the closing buckle plate 4 to move, the energy storage shaft cam 1 pushes the output shaft crank arm 3 in the rotating process, and the output shaft crank arm 3 can move through the connecting rod 32. When the crank roller 31 which is the pinch plate matching part for pushing the closing pinch plate 4 to reset in the closing process is in pushing matching with the locking matching side surface 411 on the closing pinch plate 4, the closing pinch plate 4 can not rotate anticlockwise, the roller-engaging side 422 of the second latch arm 42 is in pushing engagement with the energy-storing holding roller 11 to limit the energy-storing shaft cam 1 from rotating counterclockwise, the half-shaft engaging side 421 of the second latch arm 42 is disengaged from the closing half-shaft 7, and the closing spring has a tendency to rotate the energy-storing shaft cam 1 counterclockwise after storing energy, but due to the limiting function of the second buckle arm 42, the energy storage shaft cam 1 can not rotate anticlockwise to enable the closing spring to release energy, meanwhile, the closing half shaft 7 is separated from the second buckle arm 42, so that even if an operator operates by mistake, the closing half shaft 7 only idles and cannot cause reclosing again.
When the operating mechanism of the circuit breaker needs to be opened, the output shaft rotates anticlockwise to drive the connecting lever roller 31 to move to a position where the connecting lever roller 31 does not limit the closing buckle 4, the energy storage shaft cam 1 pushes the closing buckle 4 to rotate anticlockwise at a small angle until the side surface of the half shaft pushes the closing half shaft 7, and at the moment, due to the limit of the closing half shaft 7, the energy storage shaft cam 1 cannot rotate anticlockwise continuously to enable the closing spring to release energy.
When the operating mechanism of the circuit breaker needs to be switched on, the switching-on half shaft 7 rotates and is separated from the half shaft matching side 421 on the second buckle plate arm 42, at the moment, the switching-on buckle plate 4 can not limit the energy storage shaft cam 1 any more, the switching-on spring drives the energy storage shaft cam 1 to rotate anticlockwise, the energy storage shaft cam 1 replaces the output shaft crank arm 3, and the output shaft crank arm 3 drives the output shaft to rotate clockwise to output switching-on action. In the process of clockwise rotation of the output shaft, the crank roller 31 can also rotate along with the output shaft crank 3, the relative face of the crank roller 31 and the closing buckle 4 is pushed and matched, in the process, the crank roller 31 can rotate around the axis of the crank roller 31, sliding friction between the output shaft crank 3 and the closing buckle 4 is converted into rolling fit between the outer surface of the crank roller 31 and the opposite side face of the closing buckle 4, friction between the output shaft crank 3 and the closing buckle 4 is reduced, and abrasion between the output shaft crank 3 and the closing buckle 4 caused by friction in the matching process is also reduced. And the limit groove 412 arranged on the closing buckle plate 4 is in blocking fit with the stop pin 6 in the rotating process of the closing buckle plate 4 to limit the limit position of the clockwise rotation of the closing buckle plate 4, so as to prevent the closing buckle plate 4 from excessively rotating, and ensure that the closing keeping roller can be in blocking fit with the roller matching side 422 of the closing buckle plate 4 after energy is stored again when the crank roller 31 is in blocking fit with the locking matching side 411 of the closing buckle plate 4.
In other embodiments, the pivot axis of the crank roller may also be offset from the hinge axis of the link.
The structure of the operating mechanism of the invention is shown in fig. 1 to 6, and the structure is the same as that of the operating mechanism in the embodiment of the circuit breaker, so the description is not repeated.
The above-mentioned embodiments, the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The circuit breaker, including explosion chamber and operating mechanism, operating mechanism is provided with closing buckle, output shaft and energy storage axle including the frame that forms the operating mechanism main part on the frame, is equipped with the output shaft connecting lever on the output shaft, is provided with the energy storage shaft cam that is used for driving the action of output shaft connecting lever on the energy storage axle, and the output shaft connecting lever has the connecting rod linking arm that is used for supplying auxiliary switch connecting rod to connect, is used for the cam cooperation arm with energy storage shaft cam adaptation, still is equipped with on the output shaft connecting lever to be used for promoting the buckle cooperation part that closing buckle resets at the combined floodgate in-process, its characterized in that: the tail end of the connecting rod connecting part of the output shaft connecting lever is provided with a roller matched with a closing pinch plate, and the pinch plate matching part is formed by the roller.
2. The circuit breaker of claim 1, wherein: the roller and the connecting rod connected to the crank arm of the output shaft are located on the same hinge shaft.
3. The circuit breaker of claim 2, wherein: the connecting rod connecting arm of the output shaft crank arm is formed by two parallel supporting plates, and the hinged end and the roller of the connecting rod are positioned between the two supporting plates.
4. The circuit breaker according to any one of claims 1-3, wherein: the operating mechanism further comprises a limiting structure used for limiting the reset position of the closing buckle plate, the limiting structure comprises a stop pin arranged on the frame along the direction perpendicular to the surface of the closing buckle plate and a limiting groove arranged on the edge of the closing buckle plate, which is back to one side of the output shaft, the limiting groove is provided with a groove wall matched with the stop pin to enable the closing buckle plate to be in the reset position, and an avoiding space for avoiding the closing buckle plate during closing is further provided.
5. The circuit breaker of claim 4, wherein: the switching-on buckle plate comprises a first buckle plate arm and a second buckle plate arm, wherein the first buckle plate arm is used for being in pushing fit with the output shaft crank arm, the second buckle plate arm is matched with the energy storage shaft cam, and the first buckle plate arm and the second buckle plate arm are arranged to enable the switching-on buckle plate in a free state to reset under the action of self gravity.
6. Operating mechanism of circuit breaker, including the frame that forms the operating mechanism main part, be provided with closing buckle on the frame, output shaft and energy storage axle, be equipped with the output shaft connecting lever on the output shaft, be provided with the energy storage shaft cam that is used for driving the action of output shaft connecting lever on the energy storage axle, the output shaft connecting lever has the connecting rod linking arm that is used for supplying auxiliary switch connecting rod to be connected, be used for with the cam cooperation arm of energy storage shaft cam adaptation, still be equipped with on the output shaft connecting lever and be used for promoting the buckle cooperation part that closing buckle resets at the closing in-process, its characterized in that: the tail end of the connecting rod connecting part of the output shaft connecting lever is provided with a roller matched with a closing pinch plate, and the pinch plate matching part is formed by the roller.
7. The actuator of claim 6, wherein: the roller and the connecting rod connected to the crank arm of the output shaft are located on the same hinge shaft.
8. The actuator of claim 7, wherein: the connecting rod connecting arm of the output shaft crank arm is formed by two parallel supporting plates, and the hinged end and the roller of the connecting rod are positioned between the two supporting plates.
9. The actuator of any one of claims 6-8, wherein: the operating mechanism further comprises a limiting structure used for limiting the reset position of the closing buckle plate, the limiting structure comprises a stop pin arranged on the frame along the direction perpendicular to the surface of the closing buckle plate and a limiting groove arranged on the edge of the closing buckle plate, which is back to one side of the output shaft, the limiting groove is provided with a groove wall matched with the stop pin to enable the closing buckle plate to be in the reset position, and an avoiding space for avoiding the closing buckle plate during closing is further provided.
10. The actuator of claim 9, wherein: the switching-on buckle plate comprises a first buckle plate arm and a second buckle plate arm, wherein the first buckle plate arm is used for being in pushing fit with the output shaft crank arm, the second buckle plate arm is matched with the energy storage shaft cam, and the first buckle plate arm and the second buckle plate arm are arranged to enable the switching-on buckle plate in a free state to reset under the action of self gravity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550136.4A CN111341605B (en) | 2018-12-18 | 2018-12-18 | Circuit breaker and operating mechanism thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811550136.4A CN111341605B (en) | 2018-12-18 | 2018-12-18 | Circuit breaker and operating mechanism thereof |
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| CN111341605A true CN111341605A (en) | 2020-06-26 |
| CN111341605B CN111341605B (en) | 2021-12-31 |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092752A1 (en) * | 2000-12-22 | 2002-07-18 | Schneider Electric Industries Sa | Closing assistance mechanism for an electrical switchgear apparatus and drive mechanism of an electrical switchgear apparatus equipped with such an assistance mechanism |
| US20080296137A1 (en) * | 2007-06-01 | 2008-12-04 | Chen Steven Z | Electrical switching apparatus and stored energy assembly therefor |
| CN101533736A (en) * | 2009-04-16 | 2009-09-16 | 江阴市云峰电器设备有限公司 | Small spring operating mechanism for vacuum load switch or vacuum breaker |
| US20100155210A1 (en) * | 2006-02-09 | 2010-06-24 | Ludvik Godesa | Arrangement, in Particular, for Activating a Transport Pawl and Clamping Device for a Spring Energy Store of an Electric Switch Comprising Such an Arrangement |
| CN202307659U (en) * | 2011-11-02 | 2012-07-04 | 宁波舜利高压开关科技有限公司 | Interlocking device of spring operation mechanism |
| CN202332707U (en) * | 2011-11-16 | 2012-07-11 | 厦门先德开关有限公司 | Single-module operating mechanism of vacuum circuit breaker |
| WO2014019303A1 (en) * | 2012-07-30 | 2014-02-06 | 日升集团有限公司 | Outdoor vacuum circuit breaker |
| CN104319130A (en) * | 2014-09-18 | 2015-01-28 | 平高集团有限公司 | Operating mechanism and locking device thereof |
| CN104576096A (en) * | 2014-12-25 | 2015-04-29 | 天津平高智能电气有限公司 | Spring operating mechanism and breaker adopting same |
| CN106997825A (en) * | 2016-01-22 | 2017-08-01 | 沈阳昊诚电气有限公司 | Environmentally friendly gas switch cabinet integral type spring operating mechanism |
| CN207651411U (en) * | 2017-12-29 | 2018-07-24 | 贝司特电气有限公司 | A kind of spring actuating mechanism of vacuum circuit-breaker |
-
2018
- 2018-12-18 CN CN201811550136.4A patent/CN111341605B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020092752A1 (en) * | 2000-12-22 | 2002-07-18 | Schneider Electric Industries Sa | Closing assistance mechanism for an electrical switchgear apparatus and drive mechanism of an electrical switchgear apparatus equipped with such an assistance mechanism |
| CN1360326A (en) * | 2000-12-22 | 2002-07-24 | 施耐德电器工业公司 | Secondary close mechanism and drive mechanism for electric power switchgear |
| US20100155210A1 (en) * | 2006-02-09 | 2010-06-24 | Ludvik Godesa | Arrangement, in Particular, for Activating a Transport Pawl and Clamping Device for a Spring Energy Store of an Electric Switch Comprising Such an Arrangement |
| US20080296137A1 (en) * | 2007-06-01 | 2008-12-04 | Chen Steven Z | Electrical switching apparatus and stored energy assembly therefor |
| CN101533736A (en) * | 2009-04-16 | 2009-09-16 | 江阴市云峰电器设备有限公司 | Small spring operating mechanism for vacuum load switch or vacuum breaker |
| CN202307659U (en) * | 2011-11-02 | 2012-07-04 | 宁波舜利高压开关科技有限公司 | Interlocking device of spring operation mechanism |
| CN202332707U (en) * | 2011-11-16 | 2012-07-11 | 厦门先德开关有限公司 | Single-module operating mechanism of vacuum circuit breaker |
| WO2014019303A1 (en) * | 2012-07-30 | 2014-02-06 | 日升集团有限公司 | Outdoor vacuum circuit breaker |
| CN104319130A (en) * | 2014-09-18 | 2015-01-28 | 平高集团有限公司 | Operating mechanism and locking device thereof |
| CN104576096A (en) * | 2014-12-25 | 2015-04-29 | 天津平高智能电气有限公司 | Spring operating mechanism and breaker adopting same |
| CN106997825A (en) * | 2016-01-22 | 2017-08-01 | 沈阳昊诚电气有限公司 | Environmentally friendly gas switch cabinet integral type spring operating mechanism |
| CN207651411U (en) * | 2017-12-29 | 2018-07-24 | 贝司特电气有限公司 | A kind of spring actuating mechanism of vacuum circuit-breaker |
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|---|---|
| CN111341605B (en) | 2021-12-31 |
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