CN216562978U

CN216562978U - Electric operating mechanism of circuit breaker

Info

Publication number: CN216562978U
Application number: CN202120372860.3U
Authority: CN
Inventors: 李欣昊; 周斌雷; 柳盛森; 林秋; 柳凌志
Original assignee: Fanlian Electric Technology Wenzhou Co ltd
Current assignee: Wenzhou Sanda Technology Co ltd
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-05-17
Anticipated expiration: 2031-02-10

Abstract

The utility model relates to an electric operating mechanism of a circuit breaker, which comprises a shell, an intelligent control circuit board arranged in the shell and an electric operating assembly arranged in the shell, wherein the electric operating assembly comprises a handle which is rotatably arranged on the shell and is in linkage fit with a handle of the circuit breaker, a half gear which is in linkage fit with the handle, a gear box motor, a worm arranged on an output shaft of the gear box motor, a driving gear which is meshed with the worm, and a tripping push rod which is rotatably arranged in the shell and is matched with a tripping shaft of the circuit breaker; the tripping push rod acts along with the driving gear and can stir the tripping shaft of the circuit breaker, so that the electric brake opening of the circuit breaker can be realized. The utility model has the advantages of simple structure, stable and reliable performance, small volume, low failure rate, high safety and low cost.

Description

Electric operating mechanism of circuit breaker

Technical Field

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

Background

At present, small circuit breakers are widely used in low-voltage distribution networks, mainly in various places such as industrial, commercial, high-rise and residential houses, and can perform overcurrent protection and leakage protection on electric devices such as motors, distribution lines and lighting circuits. The traditional small circuit breaker needs manual operation to complete the opening and closing actions. With the development of intelligent power grids in China, on the premise of requiring safe operation of the power grids, the realization of intellectualization of control of electric appliances is more and more urgent. In order to cope with new situation changes, the existing miniature circuit breaker should be provided with an automatic reclosing function. The electric operating mechanism of the miniature circuit breaker is an accessory for remotely controlling communication or controlling an electric switching-off and switching-on circuit breaker according to CPU program logic, can also be directly matched with a prepayment electric energy meter for use, and can realize automatic switching-on of the electric energy meter for arrearage switching-off and payment compensation. However, the electric operating mechanism of the existing miniature circuit breaker has the defects of complex structure, large volume, unreliable performance, high failure rate and high cost.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides the electric operating mechanism of the circuit breaker, which has the advantages of simple structure, stable and reliable performance, small volume, low failure rate, high safety and low cost.

In order to achieve the purpose, the utility model adopts an electric operating mechanism of a circuit breaker, which comprises a shell, an intelligent control circuit board arranged in the shell and an electric operating assembly arranged in the shell, wherein the electric operating assembly comprises a handle which is rotationally arranged on the shell and is in linkage fit with a handle of the circuit breaker, a half gear which is in linkage fit with the handle, a gear box motor, a worm which is arranged on an output shaft of the gear box motor, a driving gear which is meshed with the worm and a tripping push rod which is rotationally arranged in the shell and is matched with a tripping shaft of the circuit breaker; the tripping push rod acts along with the driving gear and can stir the tripping shaft of the circuit breaker, so that the electric brake opening of the circuit breaker can be realized.

The beneficial effect of above-mentioned structure is: the gear box motor passes through drive gear and drives the half gear and rotate, and the half gear drives the handle and carries out the action of closing a floodgate to realize the electronic combined floodgate of circuit breaker, this structural design's electrically-operated mechanism simple structure, with low costs, the reliability is higher, adopts the half gear and cooperatees with the drive half gear on the drive gear, can guarantee electronic combined floodgate back, and electrically-operated mechanism can not influence the manual separating brake of circuit breaker, is favorable to improving this electrically-operated mechanism's security performance. When electronic separating brake, drive gear drives the action of dropout push rod, and the action of trip axle is stirred to the dropout push rod to realize the electronic quick separating brake of circuit breaker, when the user takes place to owe time, on the dropout push rod that the dropout push rod contradicts, the dropout push rod keeps at the dropout state, thereby the unable manual combined floodgate of circuit breaker. Therefore, the electric operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, small size, low failure rate, high safety and low cost.

Particularly, the half gear is provided with a triangular shaft, and the triangular shaft is sequentially clamped in triangular holes of the handle and the breaker handle and forms linkage fit of the half gear, the handle and the breaker handle. The half gear is connected with the handle through the triangular shaft, so that the half gear is more convenient to assemble with the handle, and the transmission of the half gear and the handle can be more reliable.

Particularly, the gear box motor includes the motor that sets up in the casing, sets up the gear box on the motor, the gear box include the framework that sets up on the motor, set up the gear train on the framework, the gear train including rotate set up in the epaxial first gear of pivot of motor, rotate set up on the first backup pad of framework and with the second gear of first gear engaged with, third gear, rotate the fourth gear of setting in the second backup pad of framework, the output shaft set up in the third backup pad of framework, the third gear set up on the output shaft, third gear with second gear, fourth gear engaged with. The gear box sets up on the motor, and the volume of this structural design's gear box motor is littleer, and the gear box can guarantee the steady output of power of motor, is favorable to improving this electric operating mechanism's operational reliability.

Particularly, the driving gear is provided with a driving block matched with the tripping push rod, one end of the tripping push rod is provided with a convex block matched with the driving block, and the other end of the tripping push rod is provided with an arc-shaped groove matched with the tripping shaft of the circuit breaker. The driving convex block matched with the tripping push rod is arranged on the driving gear, so that the driving gear can be ensured to reliably drive the tripping push rod, and the tripping push rod is provided with the arc-shaped groove matched with the tripping shaft of the circuit breaker, so that the tripping push rod can be ensured to reliably drive the tripping shaft of the circuit breaker, and the working reliability of the electric operating mechanism is improved.

Particularly, a positioning shaft is arranged in the shell, a positioning hole is formed in the middle of the tripping push rod, and the positioning shaft is clamped in the positioning hole and forms rotating connection and matching of the tripping push rod and the shell. The tripping push rod and the shell are assembled in a clamping matching mode, and the tripping push rod and the shell are assembled more conveniently, so that the assembly efficiency of the electric operating mechanism of the circuit breaker is improved.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an internal structural view of the embodiment of the present invention.

Fig. 3 is an exploded view of the internal structure of the embodiment of the present invention.

FIG. 4 is a perspective view of a drive gear according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1 to 4, an embodiment of the present invention is an electric operating mechanism of a circuit breaker, including a housing 10, an intelligent control circuit board 11 disposed in the housing 10, an electric operating assembly 20 disposed in the housing 10, the electric operating assembly 20 comprises a handle 21 which is rotatably arranged on the shell 10 and is in linkage fit with the breaker handle 12, a half gear 22 which is in linkage fit with the handle 21, a gear box motor 23, a worm 24 which is arranged on an output shaft 231 of the gear box motor 23, a driving gear 25 which is meshed with the worm 24, a tripping push rod 26 which is rotatably arranged in the shell 10 and is in linkage fit with the breaker tripping shaft 13, the driving gear 25 is provided with a driving half gear 251 matched with the half gear 22, the driving half gear 251 acts along with the driving gear 25 and can drive the half gear 251 to rotate, and the electric switching-on of the circuit breaker can be realized; the tripping push rod 26 acts along with the driving gear 25 and can shift the tripping shaft 13 of the circuit breaker, so that the electric brake-off of the circuit breaker can be realized. The half gear 22 on be provided with triangle axle 27, triangle axle 27 block in proper order in the triangle hole 211 of handle 21, circuit breaker handle 12, and constitute the linkage cooperation of half gear 22 with handle 21, circuit breaker handle 12. The half gear is connected with the handle through the triangular shaft, so that the half gear is more convenient to assemble with the handle, and the transmission of the half gear and the handle can be more reliable.

As shown in fig. 2 and 3, the gear box motor 23 includes a motor 231 disposed in the housing 10, a gear box 232 disposed on the motor 231, the gear box 232 includes a frame 233 disposed on the motor 231, and a gear set 234 disposed on the frame 233, the gear set 234 includes a first gear 2341 rotatably disposed on a rotating shaft of the motor 231, a second gear 2342 rotatably disposed on a first support plate 2331 of the frame 233 and engaged with the first gear 2341, a third gear 2343, and a fourth gear 2344 rotatably disposed on a second support plate 2332 of the frame 233, the output shaft 231 is disposed on a third support plate 2333 of the frame 233, the third gear 2343 is disposed on the output shaft 231, and the third gear 2343 is engaged with the second gear 2342 and the fourth gear 2344. The gear box sets up on the motor, and the volume of this structural design's gear box motor is littleer, and the gear box can guarantee the steady output of power of motor, is favorable to improving this electric operating mechanism's operational reliability. The driving gear 25 is provided with a driving block 252 matched with the tripping push rod 26, one end of the tripping push rod 26 is provided with a convex block 261 matched with the driving block 252, and the other end of the tripping push rod 26 is provided with an arc-shaped groove 262 matched with the tripping shaft 13 of the circuit breaker. The driving convex block matched with the tripping push rod is arranged on the driving gear, so that the driving gear can be ensured to reliably drive the tripping push rod, and the tripping push rod is provided with the arc-shaped groove matched with the tripping shaft of the circuit breaker, so that the tripping push rod can be ensured to reliably drive the tripping shaft of the circuit breaker, and the working reliability of the electric operating mechanism is improved. The shell 10 is internally provided with a positioning shaft 101, the middle part of the tripping push rod 26 is provided with a positioning hole, and the positioning shaft 101 is clamped in the positioning hole and forms the rotating connection and matching of the tripping push rod 26 and the shell 10. The tripping push rod and the shell are assembled in a clamping matching mode, and the tripping push rod and the shell are assembled more conveniently, so that the assembly efficiency of the electric operating mechanism of the circuit breaker is improved.

The gear box motor passes through drive gear and drives the half gear and rotate, and the half gear drives the handle and carries out the action of closing a floodgate to realize the electronic combined floodgate of circuit breaker, this structural design's electrically-operated mechanism simple structure, with low costs, the reliability is higher, adopts the half gear and cooperatees with the drive half gear on the drive gear, can guarantee electronic combined floodgate back, and electrically-operated mechanism can not influence the manual separating brake of circuit breaker, is favorable to improving this electrically-operated mechanism's security performance. When electronic separating brake, drive gear drives the action of dropout push rod, and the action of trip axle is stirred to the dropout push rod to realize the electronic separating brake of circuit breaker, when the user takes place to owe time, on the dropout push rod that the dropout push rod contradicts, the dropout push rod keeps at the dropout state, thereby the unable manual combined floodgate of circuit breaker. Therefore, the electric operating mechanism of the circuit breaker has the advantages of simple structure, stable and reliable performance, small size, low failure rate, high safety and low cost.

Claims

1. The utility model provides an electric operating mechanism of circuit breaker, includes the casing, sets up intelligent control circuit board in the casing, sets up the electric operating assembly in the casing, its characterized in that: the electric operation assembly comprises a handle which is rotatably arranged on the shell and is in linkage fit with the handle of the circuit breaker, a half gear which is in linkage fit with the handle, a gear box motor, a worm which is arranged on an output shaft of the gear box motor, a driving gear which is meshed with the worm, and a tripping push rod which is rotatably arranged in the shell and is in fit with a tripping shaft of the circuit breaker, wherein a driving half gear which is matched with the half gear is arranged on the driving gear, and the driving half gear acts along with the driving gear and can drive the half gear to rotate and realize electric switching-on of the circuit breaker; the tripping push rod acts along with the driving gear and can stir the tripping shaft of the circuit breaker, so that the electric brake opening of the circuit breaker can be realized.

2. The electric operating mechanism of circuit breaker according to claim 1, characterized in that: the half-gear on be provided with the triangle axle, the triangle axle block in proper order in the triangle hole of handle, circuit breaker handle, and constitute the linkage cooperation of half-gear and handle, circuit breaker handle.

3. The electric operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the gear box motor including set up motor, the gear box of setting on the motor in the casing, the gear box including setting up the framework on the motor, set up the gear train on the framework, the gear train including rotate set up in the epaxial first gear of motor, rotate set up on the first backup pad of framework and with first gear engaged with second gear, third gear, rotate the fourth gear that sets up in the second backup pad of framework, the output shaft set up in the third backup pad of framework, the third gear setting on the output shaft, third gear and second gear, fourth gear engaged with.

4. The electric operating mechanism of circuit breaker according to claim 1 or 2, characterized in that: the driving gear is provided with a driving block matched with the tripping push rod, one end of the tripping push rod is provided with a lug matched with the driving block, and the other end of the tripping push rod is provided with an arc-shaped groove matched with the tripping shaft of the circuit breaker.

5. The electric operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that: the shell is internally provided with a positioning shaft, the middle part of the tripping push rod is provided with a positioning hole, and the positioning shaft is clamped in the positioning hole and forms the rotating connection and matching of the tripping push rod and the shell.