CN215955219U

CN215955219U - Transmission mechanism of automatic opening and closing device of circuit breaker

Info

Publication number: CN215955219U
Application number: CN202122047582.7U
Authority: CN
Inventors: 丁海啸; 胡军; 李彬彬; 郭进锐; 汪振利; 吴晓玉
Original assignee: Wenzhou Kaiyue Electronic Technology Co ltd
Current assignee: Wenzhou Kaiyue Electronic Technology Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-03-04
Anticipated expiration: 2031-08-26

Abstract

The utility model relates to a transmission mechanism of an automatic switching-on and switching-off device of a circuit breaker, which is characterized by comprising a first shell and a second shell which are arranged in a split mode, wherein the first shell and the second shell are buckled and connected to form an installation cavity, a transmission shaft which is in linkage connection with a handle of the circuit breaker, a tripping rod which is in linkage connection with a lock catch of the circuit breaker and a driving mechanism which drives the transmission shaft and the tripping rod to move are arranged in the installation cavity in a rotating mode, the driving mechanism comprises a motor, a driving gear and a driven gear, a motor installation seat is arranged in the installation cavity, the motor is arranged in the motor installation seat, the transmission shaft is in circumferential linkage fit with the rotating shaft, an arc-shaped through groove is formed in the installation cavity, and the tripping rod is arranged in the arc-shaped through groove in a sliding mode. By adopting the technical scheme, the transmission mechanism of the automatic switching-on and switching-off device of the circuit breaker can automatically control the switching-on and switching-off of the circuit breaker, and is simple in structure, convenient to operate and stable in operation.

Description

Transmission mechanism of automatic opening and closing device of circuit breaker

Technical Field

The utility model relates to the technical field of automatic control of circuit breakers, in particular to a transmission mechanism of an automatic opening and closing device of a circuit breaker.

Background

The general circuit breaker comprises a shell, a release, an arc extinguishing device, a static contact, a moving contact, a handle mechanism and a connecting terminal, wherein the handle mechanism comprises a handle, a jump buckle, a moving contact support, a lock catch spring and a tension spring, the moving contact is fixedly arranged on the moving contact support, a long through hole is arranged on the moving contact support, a pin shaft is arranged in the long through hole, two ends of the pin shaft are arranged on the shell, one end of the tension spring is connected on the moving contact support, a connecting point of the tension spring and the moving contact support is positioned above the long through hole, the other end of the tension spring is fixedly connected on the shell, the jump buckle is hinged and arranged at the upper end of the moving contact support, the jump buckle is connected with the handle through a first connecting rod, the middle part of the lock catch is movably sleeved on the pin shaft through the arranged through the through hole, an abutting foot which can be abutted with the jump buckle to cooperate with the jump buckle to limit the rotation of the jump buckle is extended above the lock catch, a pushing foot is arranged below the lock catch, wherein the pushing foot corresponds to a push rod of the release, thereby the push rod can promote the promotion foot to rotate and realize the hasp and rotate, the hasp rotates and makes the conflict unblock between tripping and the conflict foot, at this moment, the moving contact support can realize circuit breaker separating brake under the effect of extension spring, the hasp spring gives the hasp keep with the drive power of tripping conflict, and make the promotion foot rotate to push rod one side of release, in order to make circuit breaker can automatic combined floodgate or separating brake, rotation and the rotation of hasp that need pass through brake lever, the divide-shut brake can be realized in the rotation of handle, the hasp breaks away from and can realize automatic separating brake with the conflict of tripping.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides the transmission mechanism of the automatic switching-on and switching-off device of the circuit breaker, which can automatically control the switching-on and switching-off of the circuit breaker, has the advantages of simple structure, convenience in operation and stability in operation.

The technical scheme of the utility model is as follows: a transmission mechanism of an automatic opening and closing device of a circuit breaker is characterized by comprising a first shell and a second shell which are arranged in a split mode, wherein the first shell and the second shell are buckled and connected to form an installation cavity, a transmission shaft connected with a handle of the circuit breaker in a linkage mode, a trip rod connected with a lock catch of the circuit breaker in a linkage mode, and a driving mechanism for driving the transmission shaft and the trip rod to move are arranged in the installation cavity in a rotating mode, the driving mechanism comprises a motor, a driving gear and a driven gear, a motor installation seat is arranged in the installation cavity, the motor is arranged in the motor installation seat, the driving gear comprises a large gear portion and a fan-shaped gear portion which are arranged in an integrated mode, the fan-shaped gear portion is arranged on one side of the large gear portion, the outer side face of the fan-shaped gear portion and the outer side face of the large gear portion are flush, and a plurality of sawteeth on the large gear portion extend to the outer side face of the fan-shaped gear portion, the driven gear comprises a rotating shaft and a fan-shaped meshing part which are integrally arranged, the rotating shaft is rotatably arranged on the inner side wall of the mounting cavity, the fan-shaped meshing part is meshed with the fan-shaped gear part, a slot for the transmission shaft to be inserted is formed in the rotating shaft, the transmission shaft is in circumferential linkage fit with the rotating shaft, an arc-shaped through groove is formed in the mounting cavity, the trip rod is slidably arranged in the arc-shaped through groove, a touch block which is arranged in a mode of being in touch with the fan-shaped gear part is arranged on the trip rod in an extending mode towards the direction of the driving gear, and when the large gear part rotates clockwise, the fan-shaped gear part can drive the driven gear to rotate to achieve the switching-on operation of the circuit breaker; the fan-shaped gear part is abutted against the contact block and can drive the trip rod to rotate along the arc-shaped through groove to realize the opening operation of the circuit breaker.

By adopting the technical scheme, when a switching-off signal is received, the motor is started, the motor drives the driving gear to rotate, the fan-shaped gear part on the driving gear pushes the trip bar abutting block outwards when the driving gear rotates, so that the trip bar slides in the arc-shaped through groove, the trip bar toggles the lock catch on the circuit breaker, the circuit breaker is switched off, the motor stops working after the switching-off operation is completed, when a switching-on signal is received, the motor is started to continue to rotate, the driving gear rotates, the fan-shaped gear part on the driving gear is meshed with the fan-shaped meshing part on the driven gear to drive the driven gear to rotate, so as to drive the rotating shaft to rotate, the rotating shaft is inserted on the rotating shaft, the rotating shaft drives the rotating shaft to rotate when rotating, one end of the rotating shaft is connected with the handle of the circuit breaker, so that the rotating shaft can drive the circuit breaker to automatically switch-on operation, and the motor stops working after the switching-on is completed, simple structure, reasonable layout and small occupied space.

The utility model further comprises the following steps: the installation cavity is internally provided with a transmission gear set, the transmission gear set comprises a worm wheel, a worm and a transmission gear, the worm is arranged on an output shaft of the motor, the worm wheel is meshed with the worm, the worm wheel is integrally provided with a first gear meshed with the transmission gear, the transmission gear is integrally provided with a second gear meshed with the driving gear, a first installation groove is formed in each gear position in the installation cavity, a first insertion rod is inserted into each first installation groove, and each gear is rotatably arranged on the corresponding first insertion rod.

Adopt above-mentioned further setting, the motor starts, and the worm sets up on the output shaft of motor, with output shaft synchronous rotation, first order speed reduction is realized in worm wheel and worm cooperation, and the second level speed reduction is realized in first gear and the meshing of drive gear, and the third pole speed reduction is realized in second gear and the meshing of driving gear, simple structure, and the transmission is convenient and stability is good.

Still further arrangements of the utility model are: be equipped with the detection button on the first casing, detection button one end extends to the installation cavity, the both sides that lie in the detection button on the installation cavity are equipped with first metal pole and second metal pole respectively, are equipped with the torsional spring on the first metal pole, and torsional spring one end is passed on the detection button and is extended to the second metal pole, and can contradict with the second metal pole and set up under the drive of detection button.

Adopt above-mentioned still further setting, simple structure, simple to operate is convenient for simultaneously to reset and is detected the button.

Still further arrangements of the utility model are: the connecting wire is connected to the first metal rod and the second metal rod respectively, a plurality of clamping hooks are arranged on the inner side wall of the installation cavity at intervals, and the two connecting wires are fixedly arranged in the installation cavity through the clamping hooks.

By adopting the above further arrangement, the connecting wires are not disordered and are reasonable in layout.

The utility model further provides that: the utility model discloses a take-off structure, including release rod, conflict piece, installation cavity, bracing piece, installation cavity, second mounting groove, the last bracing piece that extends to the driving gear direction of release rod, the tip of conflict piece setting at the bracing piece, be equipped with the second mounting groove on the inside wall of installation cavity, the interpolation of second mounting groove is equipped with the second inserted bar, the bracing piece insert and establish on the second inserted bar.

By adopting the above further arrangement, the structure is simple, the installation is convenient, and the trip bar is convenient to slide in the arc-shaped through groove.

Still further arrangements of the utility model are: the first shell is provided with a plurality of positioning holes, the second shell is correspondingly provided with a plurality of positioning rods, and each positioning rod is inserted into the corresponding positioning hole and connected with the second shell through a screw.

By adopting the above further arrangement, the motor and the gears are convenient to install, and the maintenance and the component replacement are convenient.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the interior of the mounting chamber of an embodiment of the present invention;

FIG. 3 is a schematic view of a drive gear according to one embodiment of the present invention;

FIG. 4 is a schematic view of a drive gear according to one embodiment of the present invention;

FIG. 5 is a schematic view of a transmission gear according to an embodiment of the present invention;

FIG. 6 is a schematic view of a worm gear in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a driven gear according to an embodiment of the present invention;

fig. 8 is a schematic view of a trip bar according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1-8, a transmission mechanism of an automatic switching-on/off device of a circuit breaker includes a first housing 1 and a second housing 2 which are separately arranged, a plurality of positioning holes 11 are provided on the first housing 1, a plurality of positioning rods are correspondingly provided on the second housing 2, each positioning rod is inserted into the corresponding positioning hole 11 and is connected with the first housing 1 and the second housing 2 through a screw, so as to facilitate the installation of a motor 41 and each gear, and facilitate the maintenance and replacement of components, the first housing 1 and the second housing 2 are buckled and connected to form an installation cavity 3, a transmission shaft 31 which is in linkage connection with a handle of the circuit breaker, a trip rod 32 which is in linkage connection with a latch of the circuit breaker, and a driving mechanism which drives the transmission shaft 31 and the trip rod 32 to move are rotatably provided in the installation cavity 3, the driving mechanism includes a motor 41, a driving gear 42 and a driven gear 43, be equipped with motor mount pad 33 in the installation cavity 3, motor 41 set up in motor mount pad 33, driving gear 42 include integrative big gear portion 421 and the fan-shaped gear portion 422 that sets up, fan-shaped gear portion 422 sets up the one side at big gear portion 421, and the lateral surface of fan-shaped gear portion 422 flushes with the lateral surface of big gear portion 421, a plurality of sawtooth on the big gear portion 421 extend to on the lateral surface of fan-shaped gear portion 422, driven gear 43 includes integrative pivot 431 and the fan-shaped meshing portion 432 that sets up, pivot 431 rotate and set up on the inside wall of installation cavity 3, fan-shaped meshing portion 422 meshes with fan-shaped gear portion 432, be equipped with the confession on the pivot 431 slot that transmission shaft 31 inserted, transmission shaft 31 and pivot 431 circumference linkage cooperation, the slot is square or triangle-shaped setting, transmission shaft 31 corresponds and sets up to square or triangle-shaped, an arc-shaped through groove 34 is formed in the mounting cavity 3, the trip rod 32 is slidably arranged in the arc-shaped through groove 34, a contact block 321 which is abutted against the fan-shaped gear part 422 is arranged on the trip rod 32 in an extending manner in the direction of the driving gear 42, and when the large gear part 421 rotates clockwise, the fan-shaped gear part 422 can drive the driven gear 43 to rotate so as to realize the switching-on operation of the circuit breaker; the sector gear part 422 is abutted against the abutting block 321 to drive the trip rod 32 to rotate along the arc-shaped through groove 34 to realize the switching-off operation of the circuit breaker, when a switching-off signal is received, the motor is started, the motor 41 drives the driving gear 42 to rotate, the sector gear part 422 on the driving gear 42 pushes the abutting block 321 of the trip rod 32 outwards when the driving gear 42 rotates, so that the trip rod 32 slides in the arc-shaped through groove 34, the trip rod 32 toggles the lock catch on the circuit breaker to realize the switching-off operation of the circuit breaker, the motor 41 stops working after the switching-off operation is completed, when a switching-on signal is received, the motor 41 is started to continue rotating, the driving gear part 42 rotates, the sector gear 422 on the driving gear 42 is engaged with the sector engaging part 432 on the driven gear 43 to drive the driven gear 43 to rotate, thereby driving the rotating shaft 431 to rotate, the driving shaft 31 is inserted on the rotating shaft 431, and the rotating shaft drives the driving shaft 31 to rotate when the rotating shaft 431, transmission shaft 31 one end is connected with the handle of circuit breaker, and transmission shaft 31 can drive the circuit breaker and carry out automatic switching-on operation when rotating like this, accomplishes switching-on back motor 41 stop work, simple structure, and rationally distributed, occupation space is little.

Specifically, a transmission gear set is further arranged in the installation cavity 3, the transmission gear set comprises a worm wheel 5, a worm 6 and a transmission gear 7, the worm 5 is arranged on an output shaft of the motor 41, the worm wheel 6 is meshed with the worm 5, a first gear 51 meshed with the transmission gear 7 is integrally arranged on the worm wheel 5, a second gear 71 meshed with the driving gear 42 is integrally arranged on the transmission gear 7, first installation grooves are formed in the installation cavity 3 at positions of the gears, first insertion rods are inserted into the first installation grooves, the gears are rotatably arranged on the corresponding first insertion rods 81, the motor 41 is started, the worm 6 is arranged on the output shaft of the motor 41 and rotates synchronously with the output shaft, the worm wheel 5 is matched with the worm 6 to realize first-level speed reduction, the first gear 51 is meshed with the transmission gear 7 to realize second-level speed reduction, the second gear 71 is meshed with the driving gear 42 to realize third-level speed reduction, simple structure, convenient transmission and good stability.

In this embodiment, the last bracing piece 322 that has extended of trip lever 32 to driving gear 42 direction, conflict piece 321 set up the tip at bracing piece 322, be equipped with the second mounting groove on the inside wall of installation cavity 3, the bracing piece 322 that second inserted bar 36 said is equipped with in the interpolation of second mounting groove is inserted and is established on the second inserted bar, simple structure, simple to operate, and the trip lever 32 of being convenient for slides in the logical groove 34 of arc.

In this embodiment, be equipped with the detection button 9 on the first casing 1, 9 one end of detection button extends to in the installation cavity 3, the both sides that lie in the detection button 9 on the installation cavity 3 are equipped with first metal pole 36 and second metal pole 37 respectively, are equipped with the torsional spring on the first metal pole 36, and torsional spring one end is passed and is detected the button 9 and extend to on the second metal pole 37, and can contradict the setting with second metal pole 37 under the drive that detects button 9, simple structure, simple to operate is convenient for simultaneously reset the detection button 9. Specifically, be connected with the connecting wire on first metal pole 36 and the second metal pole 37 respectively, the interval is equipped with a plurality of trips 38 on the 3 inside walls of installation cavity, and each trip 38 sets up down, and two connecting wires are through the fixed setting in the installation cavity of each trip 38 for each connecting wire is not mixed and disorderly, and is rationally distributed.

Claims

1. A transmission mechanism of an automatic opening and closing device of a circuit breaker is characterized by comprising a first shell and a second shell which are arranged in a split mode, wherein the first shell and the second shell are buckled and connected to form an installation cavity, a transmission shaft connected with a handle of the circuit breaker in a linkage mode, a trip rod connected with a lock catch of the circuit breaker in a linkage mode, and a driving mechanism for driving the transmission shaft and the trip rod to move are arranged in the installation cavity in a rotating mode, the driving mechanism comprises a motor, a driving gear and a driven gear, a motor installation seat is arranged in the installation cavity, the motor is arranged in the motor installation seat, the driving gear comprises a large gear portion and a fan-shaped gear portion which are arranged in an integrated mode, the fan-shaped gear portion is arranged on one side of the large gear portion, the outer side face of the fan-shaped gear portion and the outer side face of the large gear portion are flush, and a plurality of sawteeth on the large gear portion extend to the outer side face of the fan-shaped gear portion, the driven gear comprises a rotating shaft and a fan-shaped meshing part which are integrally arranged, the rotating shaft is rotatably arranged on the inner side wall of the mounting cavity, the fan-shaped meshing part is meshed with the fan-shaped gear part, a slot for the transmission shaft to be inserted is formed in the rotating shaft, the transmission shaft is in circumferential linkage fit with the rotating shaft, an arc-shaped through groove is formed in the mounting cavity, the trip rod is slidably arranged in the arc-shaped through groove, a touch block which is arranged in a mode of being in touch with the fan-shaped gear part is arranged on the trip rod in an extending mode towards the direction of the driving gear, and when the large gear part rotates clockwise, the fan-shaped gear part can drive the driven gear to rotate to achieve the switching-on operation of the circuit breaker; the fan-shaped gear part is abutted against the contact block and can drive the trip rod to rotate along the arc-shaped through groove to realize the opening operation of the circuit breaker.

2. The transmission mechanism of an automatic switching-on/off device of a circuit breaker according to claim 1, wherein a transmission gear set is further arranged in the installation cavity, the transmission gear set comprises a worm wheel, a worm and a transmission gear, the worm is arranged on an output shaft of the motor, the worm wheel is meshed with the worm, a first gear meshed with the transmission gear is integrally arranged on the worm wheel, a second gear meshed with the driving gear is integrally arranged on the transmission gear, first installation grooves are formed in the positions, located in the installation cavity, of the gears, first insertion rods are inserted into the first installation grooves, and the gears are rotatably arranged on the corresponding first insertion rods.

3. The transmission mechanism of the automatic switching-on and switching-off device of the circuit breaker according to claim 1, wherein a detection button is arranged on the first shell, one end of the detection button extends into the installation cavity, a first metal rod and a second metal rod are respectively arranged on two sides of the detection button on the installation cavity, a torsion spring is arranged on the first metal rod and comprises a torsion spring ring, a first extension arm and a second extension arm, the torsion spring ring is sleeved on the first metal rod, the first extension arm penetrates through the detection button and extends to the second metal rod, the first extension arm can be abutted against the second metal rod under the driving of the detection button, and the second extension arm is abutted against the inner side wall of the installation cavity.

4. The transmission mechanism of the automatic switching-on and switching-off device of the circuit breaker according to claim 3, wherein the first metal rod and the second metal rod are respectively connected with a connecting wire, a plurality of hooks are arranged on the inner side wall of the installation cavity at intervals, and the two connecting wires are fixedly arranged in the installation cavity through the hooks.

5. The transmission mechanism of the automatic opening and closing device of the circuit breaker according to claim 2 or 4, wherein a support rod extends from the trip bar to the driving gear, the abutting block is arranged at an end of the support rod, a second mounting groove is formed in the inner side wall of the mounting cavity, a second insertion rod is inserted into the second mounting groove, and the support rod is inserted into the second insertion rod.

6. The transmission mechanism of an automatic opening and closing device of a circuit breaker according to claim 5, wherein the first housing is provided with a plurality of positioning holes, the second housing is correspondingly provided with a plurality of positioning rods, and each positioning rod is inserted into the corresponding positioning hole and connected with the second housing through a screw.