WO2023284898A1 - 断路器的快速跳闸装置及断路器 - Google Patents
断路器的快速跳闸装置及断路器 Download PDFInfo
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- WO2023284898A1 WO2023284898A1 PCT/CN2022/118296 CN2022118296W WO2023284898A1 WO 2023284898 A1 WO2023284898 A1 WO 2023284898A1 CN 2022118296 W CN2022118296 W CN 2022118296W WO 2023284898 A1 WO2023284898 A1 WO 2023284898A1
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- contact
- transmission structure
- push rod
- spring
- circuit breaker
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- 230000005540 biological transmission Effects 0.000 claims abstract description 174
- 230000007246 mechanism Effects 0.000 claims abstract description 104
- 230000003068 static effect Effects 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims description 18
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 description 30
- 238000010586 diagram Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000005520 electrodynamics Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 208000032368 Device malfunction Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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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
Definitions
- the invention relates to the field of low-voltage electrical appliances, in particular to a quick tripping device of a circuit breaker and a circuit breaker including the quick tripping device.
- the electrodynamic repulsion force between the dynamic and static contacts is smaller than the final pressure between the contacts, and when a short circuit occurs, the electrodynamic repulsion between the dynamic and static contacts increases sharply.
- the electric repulsion force is greater than the final pressure between the contacts, the moving contact is repelled by the static contact to separate the moving contact from the static contact, and the moving contact overcomes the final pressure between the contacts and moves away from the static contact. During this movement, the electric repulsion force gradually decreases, while the force to close the moving contact and the static contact gradually increases.
- the circuit breaker is equipped with a quick trip device to avoid the circuit breaker from closing again.
- the existing rapid tripping device has a complex structure, complicated installation and takes up a large space.
- the sensitivity is too high.
- the circuit breaker When the circuit breaker is normally closed, it is easy to cause the rapid tripping device to malfunction due to the bouncing of the moving contact.
- the rapid tripping device of the circuit breaker disclosed in Chinese patent CN1366698A.
- the object of the present invention is to overcome the defects of the prior art and provide a quick tripping device for a circuit breaker, which has a simple structure and is easy to assemble, and can realize quick tripping of the circuit breaker; it also provides a circuit breaker comprising the quick tripping device, which can quickly The tripping device can avoid secondary closing of the circuit breaker.
- the present invention adopts the following technical solutions:
- a quick tripping device for a circuit breaker which includes an operating mechanism and a contact system
- the contact system includes a moving contact mechanism and a static contact used in conjunction
- the moving contact mechanism includes a contact support that is rotated around a first center, and The moving contact is arranged on the contact support and can rotate relative to the contact support
- the moving contact mechanism also includes a contact spring, and the two ends of the contact spring are respectively connected with the moving contact and the contact support
- the fast The tripping device also includes a first transmission structure that is rotatably arranged on the contact support and is driven and matched with the operating mechanism.
- the first transmission structure is driven and matched with the contact spring, and the first transmission structure follows the rotation of the contact spring; the contact system flow
- the electric repulsion between the passive contact and the static contact of the movable contact will make the movable contact support and rotate relative to the contact, and the movable contact will drive the first transmission structure to rotate through the contact spring, and the first transmission will Structure-driven operating mechanism trips.
- the first transmission structure and the contact spring are arranged on the same rotating shaft and rotated synchronously.
- the first transmission structure includes a transmission structure installation part and a transmission structure driven part
- the contact spring includes a contact spring body and a spring first end and a spring second end respectively connected to two ends of the contact spring body
- the first end of the spring includes a first end hanging part and a first end connecting part, and the two ends of the first end connecting part are respectively connected with the first end hanging part and the main body of the contact spring;
- the hanging parts are all rotatably arranged on the first installation shaft, the driven part of the transmission structure is installed on the connecting part of the first end, and the second end of the spring is connected with the moving contact through the second installation shaft.
- the first transmission structure further includes a transmission structure connection hole provided on the driven part of the transmission structure, and the driven part of the transmission structure is sleeved on the first end connection part through the transmission structure connection hole.
- the first transmission structure directly or indirectly drives the operating mechanism to trip.
- the quick tripping device further includes an intermediate transmission structure and a second transmission structure, the first transmission structure is in driving cooperation with the second transmission structure through the intermediate transmission structure, and the second transmission structure is in driving cooperation with the operating mechanism.
- the intermediate transmission structure includes a first intermediate push rod, a first intermediate shaft, a second intermediate push rod and a second intermediate shaft
- the first intermediate push rod is drivingly matched with the first transmission structure
- the first intermediate push rod and The second intermediate push rods are respectively fixedly connected with the first intermediate shaft
- the first intermediate push rod, the second intermediate push rod and the first intermediate shaft rotate synchronously around the axis of the first intermediate shaft
- the second intermediate shaft and the second intermediate push rod The rod is connected and drivingly matched with the second transmission structure.
- the first intermediate push rod includes a first intermediate push rod actuated portion and a first intermediate push rod limiting portion that are drivingly matched with the first transmission structure;
- the quick tripping device also includes a first intermediate push rod The middle push rod limit protrusion of the limit part limit fit.
- the second transmission structure is a second push rod
- the second push rod is rotatably mounted on the second push rod shaft, and is provided with a push rod driven hole that is drivingly matched with the second intermediate shaft, and is connected with the operating mechanism
- the re-fastener drive fits the push rod drive finger.
- the second push rod is in the shape of a triangular plate, the push rod receiving hole is provided at one top corner, the second push rod shaft is rotated at the other top corner, and the third top corner is
- the push rod driving finger is provided; the refastening part includes a refastening driven post that is drivingly matched with the push rod driving finger.
- the operating mechanism includes a jumper, a locker and a re-fastener, the jumper is locked and matched with the locker, the locker is limitedly matched with the re-fastener, and the first transmission structure directly Or indirectly cooperate with the re-fastener drive to make the operating mechanism trip.
- a driving gap is provided in the transmission path from the contact spring to the operating mechanism, and the driving gap causes the contact spring to rotate through a set angle before starting to drive the operating mechanism to make it trip.
- a driving gap is provided in the transmission path from the contact spring to the operating mechanism, and the driving gap causes the contact spring to rotate through a set angle before starting to drive the operating mechanism to make it trip, and the driving gap is set at the contact Between the head spring and the first transmission structure, or between the first transmission structure and the first intermediate push rod of the intermediate transmission structure, or between the second transmission structure and the re-fastener of the operating mechanism.
- the operating mechanism further includes a bracket, a rocker assembly that is rotatably arranged on the bracket, a first crank that is rotatably arranged on the jumper around the second center, an energy storage spring, a slide rail, a slider and a first connecting link.
- the rod, the jumper, the locker and the refastener are respectively rotated and arranged on the bracket.
- the rocker arm assembly includes a synchronous handle, a rocker and a reset structure for driving the jumper and the locker.
- the rotation is set on the bracket;
- the first crank includes a crank limiter, and when the operating mechanism is in the closing state or the tripping state, the crank limiter cooperates with the jumper limiter;
- the slider is arranged on the slide rail and extends Its extension direction slides back and forth; one end of the first connecting rod and one end of the energy storage spring are respectively connected to the first crank around the third center, the other end of the first connecting rod is connected to the slider in rotation, and the other end of the energy storage spring is connected to the rocker arm
- the components are connected in rotation; when the operating mechanism is in the opening state or the tripping state, the sliding rail and the sliding block are limited in cooperation to prevent the sliding block from sliding.
- the contact spring when the moving contact is normally closed or disconnected from the fixed contact, the contact spring remains on the side of the first center; , the moving contact drives the contact spring to rotate, so that the axis of the contact spring swings to the other side of the first center, and the contact spring applies a breaking force to the moving contact, keeping the moving contact at the breaking position.
- the contact spring swings from one side of the first center to the other side of the first center, it passes through a dead point, and when the contact spring is at the dead point, the first center is located on the axis of the contact spring.
- a circuit breaker includes the quick tripping device.
- the circuit breaker also includes at least one disconnection pole, each disconnection pole includes a unit case and a contact system arranged in the unit case; the first intermediate shaft of the quick tripping device is inserted in the unit case Above, the inner end and the outer end of the first intermediate shaft are drivingly connected with the first intermediate push rod and the second intermediate push rod respectively, and the second transmission structure of the quick tripping device is rotatably arranged on the outside of the unit housing.
- the first transmission structure is driven and matched with the contact spring and rotates with the contact spring, and there is no need to install a separate component or structure for driving the first transmission structure to reset, thereby simplifying the structure of the quick tripping device;
- the moving contact drives the first transmission structure to rotate through the contact spring to drive the operating mechanism to trip, which avoids the secondary closing of the moving contact and the static contact, and realizes the circuit breaker. Quick trip.
- the driving gap can prevent the rapid tripping device from malfunctioning due to bouncing of the moving contact when the moving contact and the static contact are normally closed.
- the circuit breaker of the present invention includes the fast tripping device, which can prevent secondary closing when the circuit breaker flows through a short-circuit current, and has good breaking performance.
- Figure 1 is a structural schematic diagram of the quick tripping device of the present invention, the moving contact and the static contact are in a closed state, which shows the cooperation relationship between the moving contact mechanism, the first transmission structure, the first intermediate push rod, and the first intermediate shaft ;
- Fig. 2 is a structural schematic diagram of the quick tripping device of the present invention, the moving contact is repulsed by the static contact, which shows the cooperation relationship of the moving contact mechanism, the first transmission structure, the first intermediate push rod, and the first intermediate shaft;
- Fig. 3 is a three-dimensional schematic diagram of the quick jump device of the present invention, which shows the cooperation relationship between the first intermediate shaft, the second intermediate push rod, the second intermediate shaft, the second push rod and the operating mechanism;
- Fig. 4 is a schematic diagram of the assembly structure of the first transmission structure and the contact spring of the present invention.
- Fig. 5 is a structural schematic diagram of the first transmission structure of the present invention.
- Fig. 6 is a schematic diagram of the assembly structure of the first intermediate push rod and the first intermediate shaft of the present invention.
- Fig. 7 is a three-dimensional structural schematic diagram of the circuit breaker of the present invention.
- Fig. 8 is a schematic diagram of the projected structure of the circuit breaker of the present invention.
- Fig. 9 is a schematic structural view of the operating mechanism of the present invention, which is in the opening state
- Fig. 10 is a structural schematic diagram of the operating mechanism of the present invention, which is in the closing state;
- Fig. 11 is a schematic structural diagram of the operating mechanism of the present invention, which is in a tripped state.
- the specific implementations of the quick tripping device of the circuit breaker and the circuit breaker of the present invention will be further described below with reference to the embodiments given in the accompanying drawings 1-9.
- the quick tripping device of the circuit breaker and the circuit breaker of the present invention are not limited to the description of the following embodiments.
- the rapid tripping device of the circuit breaker of the present invention includes an operating mechanism 1 and a contact system.
- the contact system includes a moving contact mechanism and a static contact 18 that are used in conjunction.
- the first center 79 rotates the contact support 110 and the movable contact 90 which is arranged on the contact support 110 and can rotate relative to the contact support 110;
- the movable contact mechanism also includes a contact spring 23, the contact spring The two ends of 23 are respectively connected with the moving contact 90 and the contact support 110;
- the quick tripping device also includes a first transmission structure 15 which is rotatably arranged on the contact support 110 and is drivingly matched with the operating mechanism 1.
- the first transmission structure 15 Cooperating with the contact spring 23, the first transmission structure 15 rotates with the contact spring 23; when the contact system flows through the short-circuit current, the moving contact 90 is repulsed by the electric repulsion between the passive contact 90 and the static contact 18. Opening makes the movable contact 90 rotate relative to the contact support 110 , the movable contact 90 drives the first transmission structure 15 to rotate through the contact spring 23 , and the first transmission structure 15 drives the operating mechanism to trip.
- the first transmission structure is driven and matched with the contact spring and rotates with the contact spring, and there is no need to install a separate component or structure for driving the first transmission structure to reset, thereby simplifying the structure of the quick tripping device;
- the moving contact drives the first transmission structure to rotate through the contact spring to drive the operating mechanism to trip, which avoids the secondary closing of the moving contact and the static contact, and realizes the circuit breaker. Quick trip.
- the rotation of the first transmission structure 15 following the contact spring 23 includes at least the following two meanings: first, the first transmission structure 15 and the contact spring 23 rotate synchronously, that is, the contact spring 23 rotates at the same time It also drives the first transmission structure 15 to rotate; secondly, the first transmission structure 15 rotates driven by the contact spring 23 after the contact spring 23 rotates by a certain angle.
- the first transmission structure 15 can be rotatably installed on one side of the rotation direction of the contact spring 23, and drives the first transmission structure 15 to rotate after the contact spring 23 rotates by a certain angle.
- the first transmission structure 15 and the contact spring 23 are preferably coaxially arranged and rotated synchronously. It should be pointed out that the rotating shafts of the first transmission structure 15 and the contact spring 23 can also be arranged in parallel without overlapping; the first transmission structure 15 and the contact spring 23 can also rotate synchronously, but in the first transmission structure 15 and the contact spring 23 are provided with a driving gap, that is, when a short-circuit current flows in the contact system, the moving contact 90 is repelled by the electric repulsion between the passive contact 90 and the static contact 18, and the moving contact 90 Drive the contact spring 23 to rotate through a certain angle, and then drive the first transmission structure 15 to rotate, thereby avoiding the rapid tripping triggered by the bouncing of the moving contact 90 when the moving contact 90 and the static contact 18 are normally closed or disconnected The situation of device action occurs, which improves the reliability of the quick trip device.
- the first transmission structure 15 includes a transmission structure installation part 15-0 and a transmission structure driven part 15-2
- the contact spring 23 includes a contact spring main body 23-0 and The spring first end 23-1 and the spring second end 23-2 respectively connected to the two ends of the contact spring main body 23-0
- the spring first end 23-1 includes a first end hanging part and a first end connecting part
- the two ends of the first end connecting part are connected with the first end hanging part and the contact spring main body 23-0 respectively;
- the driven part 15-2 of the transmission structure is installed on the first end connection part so that The first transmission structure 15 rotates following the contact spring 23 , and the second end 23 - 2 of the spring is connected to the movable contact 90 through the second installation shaft 202 .
- the first transmission structure 15 includes a transmission structure connection hole 15-4 arranged on the transmission structure receiving part 15-2, and the transmission structure receiving part 15-2 is sleeved on the transmission structure connection hole 15-4. on the first end connector.
- the movable contact 90 includes a movable contact arm 90-0 and a movable contact 90-1, one end of the movable contact arm 90-0 is arranged on the contact support 110, and the other end is provided with The moving contact 90-1, the middle part of the moving contact arm 90-0 is provided with a moving contact connecting groove or hole matched with the second installation shaft 202;
- the static contact 18 includes a static contact arm 18 and a static contact 18 -1.
- the static contact arm 18 includes a first part and a second part which are bent and connected and have a U-shaped structure as a whole. The free end of the first part is provided with a static contact 18-1.
- the first transmission structure 15 includes a transmission structure installation part 15-0, a transmission structure driving part 15-1 and a transmission structure receiving part 15-2, the transmission structure installation part 15-0 and the transmission structure driving part 15-1 are arranged in the same plane, the transmission structure receiving part 15-2 is arranged perpendicular to the transmission structure installation part 15-0, and the transmission structure installation part 15-0 is set There is a transmission structure shaft hole 15-3 matched with the first installation shaft 201.
- the first transmission structure 15 may not be provided with the transmission structure receiving part 15-2, or in other words, the transmission structure receiving part 15-2 and the transmission structure installation part 15-0 are combined into one.
- the transmission structure mounting part 15-0 is provided with a limit groove that cooperates with the spring first end 23-1, and the spring first end 23-1 is placed in the limit groove, and the first transmission structure 15 and the contactor can also be realized. Synchronous rotation of the head spring 23.
- the first transmission structure 15 can directly or indirectly drive the operating mechanism to trip.
- the quick tripping device of this embodiment also includes an intermediate transmission structure and a second transmission structure 19, the first transmission structure 15 Through driving cooperation between the intermediate transmission structure and the second transmission structure 19 , the second transmission structure 19 is driving cooperation with the operating mechanism 1 .
- the operating mechanism 1 includes jumpers 1-4, lockers 1-10 and re-fasteners 1-11, jumpers 1-4 and lockers 1-11.
- the second transmission structure 19 drives the fastener 1-11 to release the limit cooperation with the lock fastener 1-10, so that the lock fastener 1-10 and the jumper fastener 1-4 release the lock cooperation, and the operating mechanism 1 is released.
- the first transmission structure 15 can obviously be tripped by indirectly driving the operating mechanism through other transmission structures.
- the intermediate transmission structure includes a first intermediate push rod 16-0, a first intermediate shaft 16-1, a second intermediate push rod 17-0 and a second intermediate shaft 17-1 , the first intermediate push rod 16-0 is drivingly matched with the first transmission structure 15, the first intermediate push rod 16-0 and the second intermediate push rod 17-0 are respectively fixedly connected with the first intermediate shaft 16-1, the first intermediate The push rod 16-0, the second intermediate push rod 17-0 and the first intermediate shaft 16-1 are arranged to rotate synchronously around the axis of the first intermediate shaft 16-1, and the second intermediate shaft 17-1 and the second intermediate push rod 17 -0 is connected and is drivingly matched with the second transmission structure 19.
- the first intermediate push rod 16-0 includes a first intermediate push rod actuating part 16-01 drivingly matched with the first transmission structure 15 and a first intermediate push rod limiter.
- the quick tripping device also includes an intermediate push rod limiting protrusion 120-9 which is limitedly matched with the first intermediate push rod limiting part 16-02.
- the middle part of the first intermediate push rod 16-0 is fixedly connected to the first intermediate shaft 16-1, and the two ends are respectively the first intermediate push rod driven part 16-01 and the second intermediate push rod 16-01.
- the relative position of 1; the middle push rod limit protrusion 120-9 is a part of the circuit breaker housing or a structure that is separately arranged and fixed on the circuit breaker housing.
- one end of the second intermediate push rod 17-0 is detachably connected to the first intermediate shaft 16-1, and one end of the first intermediate shaft 16-1 is provided with an intermediate shaft limiting plane 16-10, one end of the second intermediate push rod 17-0 is provided with a second intermediate push rod connection hole, and the side wall of the second intermediate push rod connection hole is provided with a connection hole limit that cooperates with the intermediate shaft limit plane 16-10.
- the second intermediate push rod 17-0 rotates synchronously with the first intermediate shaft 16-1; the second intermediate shaft 17-1 is arranged on the other end of the second intermediate push rod 17-0.
- the second transmission structure 19 is a second push rod, which is rotatably mounted on the second push rod shaft 4, and is provided with a drive fit with the second intermediate shaft 17-1.
- the push rod receiving hole 19-2, and the push rod driving finger 19-1 drivingly matched with the fastener 1-11 of the operating mechanism 1.
- the second push rod in this embodiment has a triangular plate structure, a push rod receiving hole 19-2 drivingly matched with the second intermediate shaft 17-1 is provided at one top corner, and the second push rod shaft passes through the other top corner. 4 Rotate and set, the third vertex is provided with a push rod driving finger 19-1 drivingly matched with the fastener 1-11 of the operating mechanism 1.
- the push rod receiving hole 19-2 is a waist-shaped hole.
- the refastening member 1-11 includes a refastening driven post 1-110 drivingly matched with the push rod driving finger 19-1.
- a driving gap is provided in the transmission path from the contact spring 23 to the operating mechanism 1, and the driving gap makes the contact spring 23 turn over a set angle before the second transmission structure 19 starts to drive the supply.
- the operating mechanism 1 makes it trip, which can avoid the situation that the rapid tripping device malfunctions due to the bouncing of the moving contact 90 when the moving contact 90 and the static contact 18 are normally closed.
- the size of the setting angle is related to the size of the driving gap.
- the driving gap is preferably set between the first transmission structure 15 and the first intermediate push rod 16-0, and the contact system flows a short-circuit current to make the movable contact 90
- the movable contact 90 drives the first transmission structure 15 through the contact spring 23 to first turn over the driving gap, and then contacts the first intermediate push rod 16-0 And drive the first intermediate push rod 16-0 to rotate.
- the moving contact 90 is repelled by the electric repulsion between the passive contact 90 and the static contact 18, and the moving contact 90 drives the first transmission structure 15 counterclockwise through the contact spring 23.
- the advantage of setting the driving gap between the first transmission structure 15 and the first intermediate push rod 16-0 is that the re-fastener 1-11 of the operating mechanism 1 can drive the second transmission structure 19, the second intermediate shaft 17-0 1.
- the second intermediate push rod 17-0, the first intermediate shaft 16-1 and the first intermediate push rod 16-0 are reset, and the first transmission structure 15 is reset under the drive of the contact spring 23, so there is no need to set additional Reset pieces.
- the driving gap can also be set between the contact spring 23 and the first transmission structure 15, or between the second transmission structure 19 and the re-buckle of the operating mechanism 1. Between pieces 1-11. Further, as shown in FIGS. 1 and 3 , the quick jump device also needs to be provided with a reset member to reset the first transmission structure 15 and/or the second transmission structure 19 and/or the components in the intermediate transmission structure.
- the drive gap can theoretically also be set between the second intermediate shaft 17-1 and the second transmission structure 19, or between the second intermediate shaft 17-1 between the second intermediate push rod 17-0, or between the second intermediate push rod 17-0 and the first intermediate shaft 16-1, or between the first intermediate shaft 16-1 and the first intermediate shaft 16 -0,
- the “driving gap” is actually an idle stroke at one end of the transmission path from the contact spring 23 to the operating mechanism 1 .
- the movable contact 90 when the movable contact 90 is repelled by the static contact 18, the movable contact 90 is rotated relative to the contact support 110, and the movable contact 90 drives the spring second end 23-2 of the contact spring 23 to wind around the second end of the spring.
- One end 23-1 rotates, and the second end 23-2 of the spring moves with the movable contact 90, so that the axis of the contact spring 23 swings to the other side of the first center 79, and the contact spring 23 applies breaking force to the movable contact 90 , to keep the moving contact 90 in the temporary breaking position.
- the contact spring 23 when the movable contact 90 and the static contact 18 are normally closed, the contact spring 23 applies a closing force to the movable contact 90, so that the movable contact 90 remains in the closed position and is in contact with the static contact. Head 18 remains closed.
- the normal closing or opening of the moving contact 90 and the static contact 18 means that the user or operator drives the closing or opening of the moving contact 90 and the static contact 18 through the operating mechanism 1, and the operating mechanism 1 Tripping, except for the case where the operating mechanism trips when the moving contact 90 is repelled by the static contact 18, resulting in the disconnection of the moving contact 90 and the static contact 18.
- the head 90 rotates relative to the contact support 110 and rotates to the temporary breaking position, then the movable contact 90 drives the first transmission structure 15 to rotate through the contact spring 23 at the same time, so that the transmission structure driving part 15-1 of the first transmission structure 15 rotates After passing the driving gap, it contacts with the first intermediate push rod actuated part 16-01 of the first intermediate push rod 16-0 to drive the first intermediate push rod 16-0 to rotate, and the first intermediate push rod 16-0 passes through the first intermediate push rod 16-0 in turn.
- One intermediate shaft 16-1, the second intermediate push rod 17-0, the second intermediate shaft 17-1 and the second transmission structure 19 drive the re-fastener 1-11 of the operating mechanism 1 to rotate, so that the re-fastener 1-11 is released Cooperate with the limit position of the lock piece 1-10, and the lock piece 1-10 rotates to release the lock cooperation with the jumper piece 1-4, so that the operating mechanism 1 is released, and the operating mechanism 1 drives the entire moving contact mechanism to move to the breaking position.
- the operating mechanism 1 also includes a bracket 1-0, a rocker assembly rotated on the bracket 1-0, and a second center 1-0 8 Rotate the first crank 1-7, energy storage spring 1-3, slide rail 1-12, slide block 1-13 and first connecting rod 1-14 that are arranged on the jumper 1-4, and the jumper 1 -4, the locking part 1-10 and the re-fastening part 1-11 are respectively rotated and arranged on the bracket 1-0, and the rocker arm assembly includes a handle 1-1 for synchronous action, a rocking arm 1-50 and a jumper for driving the buckle 1-4 and the resetting structure 1-6 of the buckle 1-10, the rocker arm 1-50 is rotated and installed on the bracket 1-0; the first crank 1-7 includes a crank limiter 1-70, and the operation When the mechanism 1 is in the closing state or the tripping state, the crank limit part 1-70 cooperates with the jumper 1-4; the slider 1-13 is arranged on the slide rail 1-12
- the energy storage spring 1-3 is installed on the rocker arm 1-50 around the fourth center 1-2, and the third center 1-15 and the fourth center 1-2 are respectively Located on both sides of the jumper 1-4, the rocker arm 1-50 rotates around the sixth center 1-51 and is arranged on the bracket 1-0.
- the operating mechanism 1 further includes a second connecting rod 1-91, one end of the second connecting rod 1-91 is rotationally connected with the slider 1-13, and the other end is connected with the second The crank 1-92 is connected in rotation; one end of the second crank 1-92 is rotated around the fifth center 1-94, and the other end is connected with the contact support 110 (as shown in Figure 3, the second crank 1-92 preferably Connected to the contact support 110 through the linkage shaft 5), one end of the second connecting rod 1-91 is connected to the slide block 1-13 in rotation, and the other end is connected to the middle part of the second crank 1-92 in rotation around the sixth center 1-93.
- one end of the second crank 1-92 is arranged on the bracket 1-0 to rotate around the fifth center 1-94, and the second connecting rod 1-91 is connected to the second connecting rod through the sixth connecting shaft.
- the two cranks 1-92 are connected in rotation, and the bracket 1-0 is provided with an arc-shaped hole for avoiding the sixth connecting shaft and matching its motion track.
- the operating mechanism 1 is not provided with the second crank 1-92, but one end of the second connecting rod 1-91 is rotationally connected with the slider 1-13, and the other end is directly connected with the contact support 110.
- the slide rails 1-12 can be straight, arc, triangular, or a combination of straight and arc, and its specific shape can be adapted according to the current level, design space and control requirements of the circuit breaker. Adjustment. Specifically, when the slide rail 1-12 is set in a straight shape, an arc shape, or a combined shape of a straight shape and an arc shape, when the circuit breaker is opened or tripped, the slide block 1-13 moves along the slide rail 1-12 Moving upward, when the circuit breaker is closed, the slider 1-13 moves downward along the slide rail 1-12, and the trajectory of the upward movement and the trajectory of the downward movement are coincident; when the slide rail 1-12 is set as a triangle , when the circuit breaker is opened or tripped, the slider 1-13 moves upward along one side of the triangle of the slide rail 1-12, and when the circuit breaker is closed, the slider 1-13 moves upward along the side of the slide rail 1-12.
- the motion locus is downward along the other side of the triangle, and the downward and upward motion loci are not coincident (not shown in the figure); when the state switching of the operating mechanism, the slide block 1-13 forms a closed position along the slide rail 1-12 The trajectory of the shape.
- the slide rail 1-12 can be arranged on the bracket 1-0 or the circuit breaker housing.
- the slide rail 1-12 is preferably a straight groove arranged on a pair of opposite side walls of the support 1-0; the two ends of the slider 1-13 are respectively arranged on Two slide rails 1-12.
- the two ends of the swing stroke of the rocker arm 1-50 are respectively the first end of the stroke and the second end of the stroke; the two ends of the energy storage spring 1-3 are respectively the second end of the energy storage spring.
- One end and the second end of the energy storage spring are respectively connected with the rocker arm assembly and the first crank 1-7.
- the first end of the stroke and the second end of the stroke of the rocker arm 1-50 are respectively the right end and the left end of the swing stroke of the rocker arm 1-50
- the upper end of the energy storage spring 1-3 is The first end of the energy storage spring is the second end of the energy storage spring at the lower end.
- FIG. 10 when the operating mechanism 1 is in the closing state, the rocker arm 1-50 swings to the second end of the stroke and drives the first end of the energy storage spring to rotate around the second end of the energy storage spring until the energy storage spring 1-3 turns past the first dead point position, and the energy storage spring 1-3 drives the first
- the crank 1-7 rotates in the second direction and drives the rocker arm 1-50 to swing to the second end of the stroke, the first crank 1-7 drives the slider 1-13 along the slide rail 1-12 through the first connecting rod 1-14 Sliding, the slider 1-13 drives the contact support 110 to rotate in the first direction to the breaking position through the second connecting rod 1-91 and the second crank 1-92, so that the operating mechanism is switched to the opening state as shown in Figure 9 .
- the linkage shaft 5 used to connect the contact support 110 and the second crank 1-92 is bounded by the limit surface 1-0 of the bracket 1-0. 95 (as shown in Figure 9-11, the limit surface 1-95 is preferably the lower edge of the side wall of the bracket 1), so that the contact support 110 can no longer continue to rotate in the first direction, and the contact support 110 forms a limit to the slider 1-13 through the second connecting rod 1-91 at the same time, preventing the slider 1-13 from sliding upward along the slide rail 1-12;
- the limit prevents the slider 1-13 from continuing to slide upward along the slide rail 1-12, which is beneficial to reduce the impact damage between the slider 1-13 and the slide rail 1-12, and is beneficial to prolong the service life of the operating mechanism 1.
- the present invention also discloses a circuit breaker, which includes the quick tripping device; the circuit breaker also includes at least one disconnection pole 300, and each disconnection pole 300 includes a unit case 120 and a set The contact system in the unit housing 120; the first intermediate shaft 16-1 of the quick trip device is inserted on the unit housing 120, and the inner and outer ends of the first intermediate shaft 16-1 are respectively connected to the first The middle push rod 16 - 0 and the second middle push rod 17 - 0 are drivingly connected, and the second transmission structure 19 of the quick tripping device is rotatably arranged on the outside of the unit housing 120 .
- the circuit breaker is a multi-pole circuit breaker, a plurality of circuit breaking poles 300 are arranged side by side, and the moving contact mechanism of each circuit breaking pole 300 is connected through the linkage shaft 5 and rotates synchronously, the operating mechanism 1 straddles one breaking pole 300 and is drivingly connected to the linkage shaft 5 , and adjacent breaking poles 300 can share a second transmission structure 19 .
- the unit housing 120 is provided with an intermediate push rod limiting protrusion 120-9, which is connected to the first intermediate push rod limiting portion 16 of the first intermediate push rod 16-0. -02 limit fit.
- the circuit breaker of the present invention is a three-phase circuit breaker, in which two adjacent disconnection poles 300 share a second transmission structure 19, and the third disconnection pole 300 uses a second transmission structure 19 independently.
- the operating mechanism 1 straddles the middle breaking pole 300 , and one end of the second crank 1 - 92 of the operating mechanism 1 is connected with the linkage shaft 5 .
Landscapes
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
Description
Claims (15)
- 一种断路器的快速跳闸装置,其包括操作机构(1)和触头系统,触头系统包括配合使用的动触头机构和静触头(18),动触头机构包括绕第一中心(79)转动设置的触头支持(110)以及设置在触头支持(110)上且能相对于触头支持(110)转动的动触头(90);所述动触头机构还包括触头弹簧(23),触头弹簧(23)两端分别与动触头(90)和触头支持(110)相连;其特征在于:所述快速跳闸装置还包括转动设置在触头支持(110)上且与操作机构(1)驱动配合的第一传动结构(15),第一传动结构(15)与触头弹簧(23)驱动配合,第一传动结构(15)跟随触头弹簧(23)转动;所述触头系统流过短路电流时,动触头(90)被动触头(90)和静触头(18)之间的电动斥力斥开使动触头(90)相对于触头支持(110)转动,动触头(90)通过触头弹簧(23)驱动第一传动结构(15)转动,第一传动结构(15)驱动操作机构脱扣。
- 根据权利要求1所述的断路器的快速跳闸装置,其特征在于:所述第一传动结构(15)和触头弹簧(23)同转轴设置且同步转动设置。
- 根据权利要求2所述的断路器的快速跳闸装置,其特征在于:所述第一传动结构(15)包括传动结构安装部(15-0)和传动结构受动部(15-2),触头弹簧(23)包括触头弹簧主体(23-0)以及分别与触头弹簧主体(23-0)两端相连的弹簧第一端(23-1)和弹簧第二端(23-2),弹簧第一端(23-1)包括第一端挂装部和第一端连接部,第一端连接部两端分别与第一端挂装部和触头弹簧主体(23-0)相连;所述传动结构安装部(15-0)和第一端挂装部均转动设置在第一安装轴(201)上,传动结构受动部(15-2)安装在第一端连接部上,弹簧第二端(23-2)通过第二安装轴(202)与动触头(90)相连。
- 根据权利要求3所述断路器的快速跳闸装置,其特征在于:所述第一传动结构(15)还包括设置在传动结构受动部(15-2)上的传动结构连接孔(15-4),传动结构受动部(15-2)通过传动结构连接孔(15-4)套设在第一端连接部上。
- 根据权利要求1所述的断路器的快速跳闸装置,其特征在于:所述的第一传动结构(15)直接或间接的驱动操作机构脱扣。
- 根据权利要求1所述的断路器的快速跳闸装置,其特征在于:所述快速跳闸装置还包括中间传动结构和第二传动结构(19),第一传动结构(15)通过中间传动结构与第二传动结构(19)驱动配合,第二传动结构(19)与操作机构(1)驱动配合。
- 根据权利要求6所述的断路器的快速跳闸装置,其特征在于:所述中间传动结构包括第一中间推杆(16-0)、第一中间轴(16-1)、第二中间推杆(17-0)和第二中间轴(17-1),第一中间推杆(16-0)与第一传动结构(15)驱动配合,第一中间推杆(16-0)和第二中间推杆(17-0)分别与第一中间轴(16-1)固定连接,第一中间推杆(16-0)、第二中间推杆(17-0)和第一中间轴(16-1)绕第一中间轴(16-1)的轴线同步转动设置,第二中间轴(17-1)与第二中间推杆(17-0)相连且与第二传动结构(19)驱动配合。
- 根据权利要求7所述的断路器的快速跳闸装置,其特征在于:所述第一中间推杆(16-0)包括与第一传动结构(15)驱动配合的第一中间推杆受动部(16-01)以及第一中间推杆限位部(16-02);所述快速跳闸装置还包括与第一中间推杆限位部(16-02)限位配合的中间推杆限位凸起(120-9)。
- 根据权利要求7所述的断路器的快速跳闸装置,其特征在于:所述第二传动结构(19)为第二推杆,第二推杆转动安装在第二推杆轴(4)上,且设有与第二中间轴(17-1)驱动配合的推杆受动孔(19-2),以及与操作机构(1)的再扣件(1-11)驱动配合的推杆驱动指(19-1)。
- 根据权利要求9所述的断路器的快速跳闸装置,其特征在于:所述第二推杆其呈三角形板状结构,一个顶角处设有所述推杆受动孔(19-2),另一个顶角处通过第二推杆轴(4)转动设置,第三个顶角处设有所述推杆驱动指(19-1);所述再扣件(1-11)包括与推杆驱动指(19-1)驱动配合的再扣受动柱(15-9)。
- 根据权利要求1所述的断路器的快速跳闸装置,其特征在于:所述操作机构(1)包括跳扣件(1-4)、锁扣件(1-10)和再扣件(1-11),跳扣件(1-4)与锁扣件(1-10)锁扣配合,锁扣件(1-10)与再扣件(1-11)限位配合,所述的第一传动结构(15)直接或间接的与再扣件(1-11)驱动配合,使操作机构(1)脱扣。
- 根据权利要求1所述的断路器的快速跳闸装置,其特征在于:所述触头弹簧(23)至操作机构(1)的传动路径中设有驱动间隙,驱动间隙使触头弹簧(23)转过设定角度后,才开始驱动操作机构(1)使其脱扣。
- 根据权利要求1所述的断路器的快速跳闸装置,其特征在于:所述动触头(90)与静触头(18)正常闭合或断开时,触头弹簧(23)保持在第一中心(79)一侧;所述动触头(90)被动触头(90)和静触头(18)之间的电动斥力斥开时,动触头(90)带动触头弹簧(23)转动,使触头弹簧(23)的轴线摆动至第一中心(79)的另一侧,触头弹簧(23)向动触头(90)施加分断力,使动触头(90)保持在分断位置;所述触头弹簧(23)由第一中心(79)一侧摆动至第一中心(79)另一侧时,经过死点位置,触头弹簧(23)位于死点位置时,第一中心(79)位于触头弹簧(23)的轴线上。
- 一种断路器,其特征在于,其包括权利要求1-13任意一项所述的快速跳闸装置。
- 根据权利要求14所述的断路器,其特征在于:所述断路器还包括至少一个断路极(300),每个断路极(300)均包括单元壳体(120)以及设置在单元壳体(120)内的触头系统;所述快速跳闸装置的第一中间轴(16-1)插置在单元壳体(120)上,第一中间轴(16-1)的内端和外端分别与第一中间推杆(16-0)和第二中间推杆(17-0)驱动相连,快速跳闸装置的第二传动结构(19)转动设置在单元壳体(120)的外侧。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP22841531.1A EP4372781A1 (en) | 2021-07-15 | 2022-09-13 | Quick tripping apparatus for circuit breaker |
AU2022310391A AU2022310391A1 (en) | 2021-07-15 | 2022-09-13 | Quick tripping apparatus for circuit breaker |
ZA2023/09875A ZA202309875B (en) | 2021-07-15 | 2023-10-23 | Circuit breaker and quick tripping device thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN202110809551.2A CN115621091A (zh) | 2021-07-15 | 2021-07-15 | 断路器的快速跳闸装置及断路器 |
CN202110809551.2 | 2021-07-15 |
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WO2023284898A1 true WO2023284898A1 (zh) | 2023-01-19 |
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PCT/CN2022/118296 WO2023284898A1 (zh) | 2021-07-15 | 2022-09-13 | 断路器的快速跳闸装置及断路器 |
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EP (1) | EP4372781A1 (zh) |
CN (1) | CN115621091A (zh) |
AU (1) | AU2022310391A1 (zh) |
WO (1) | WO2023284898A1 (zh) |
ZA (1) | ZA202309875B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117153640A (zh) * | 2023-10-10 | 2023-12-01 | 杭州天卓网络有限公司 | 一种安全防漏电的智能断路器及其控制方法 |
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US5103198A (en) | 1990-05-04 | 1992-04-07 | Merlin Gerin | Instantaneous trip device of a circuit breaker |
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CN216624153U (zh) * | 2021-07-15 | 2022-05-27 | 上海正泰智能科技有限公司 | 断路器的快速跳闸装置及断路器 |
-
2021
- 2021-07-15 CN CN202110809551.2A patent/CN115621091A/zh active Pending
-
2022
- 2022-09-13 EP EP22841531.1A patent/EP4372781A1/en active Pending
- 2022-09-13 AU AU2022310391A patent/AU2022310391A1/en active Pending
- 2022-09-13 WO PCT/CN2022/118296 patent/WO2023284898A1/zh active Application Filing
-
2023
- 2023-10-23 ZA ZA2023/09875A patent/ZA202309875B/en unknown
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US5103198A (en) | 1990-05-04 | 1992-04-07 | Merlin Gerin | Instantaneous trip device of a circuit breaker |
CN1366698A (zh) | 2000-03-13 | 2002-08-28 | 通用电气公司 | 旋转断路的跳闸机构超驰控制装置 |
CN101030506A (zh) * | 2007-01-01 | 2007-09-05 | 常熟开关制造有限公司(原常熟开关厂) | 断路器的触头系统 |
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CN216624153U (zh) * | 2021-07-15 | 2022-05-27 | 上海正泰智能科技有限公司 | 断路器的快速跳闸装置及断路器 |
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CN117153640A (zh) * | 2023-10-10 | 2023-12-01 | 杭州天卓网络有限公司 | 一种安全防漏电的智能断路器及其控制方法 |
CN117153640B (zh) * | 2023-10-10 | 2024-03-15 | 杭州天卓网络有限公司 | 一种安全防漏电的智能断路器及其控制方法 |
Also Published As
Publication number | Publication date |
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AU2022310391A1 (en) | 2023-11-09 |
EP4372781A1 (en) | 2024-05-22 |
ZA202309875B (en) | 2024-05-30 |
CN115621091A (zh) | 2023-01-17 |
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