CN211654746U - Circuit breaker with electric operating device - Google Patents

Abstract

The utility model discloses a circuit breaker with electric operating means, including circuit breaker body and electric operating means, circuit breaker body upper surface sets up divide-shut brake handle, electric operating means includes electric drive mechanism, middle drive mechanism, one-way drive mechanism, handle pushing mechanism, fixed upper plate and fixed lower plate; the middle transmission mechanism comprises a first-stage gear, a second-stage gear and a third-stage gear which are in reduction meshing transmission in sequence, a driving gear is arranged at the output end of the motor, a one-way needle bearing is arranged inside the third-stage gear, a handle pushing mechanism is arranged at the lower end of a third-stage gear shaft, and a manual operation hole is formed in the upper end of the third-stage gear shaft. The utility model has simple structure, small volume and mass, good reliability, uneasy damage and low cost; the layout of the circuit breaker is optimized, the circuit breaker can be quickly installed, and the structure is compact.

Description

Circuit breaker with electric operating device

Technical Field

The utility model belongs to the technical field of circuit breaker structural design, concretely relates to circuit breaker with electrically operated device.

Background

With the development of new energy technology, especially power distribution technology, brand new use requirements are provided for the use occasions of the circuit breaker. The circuit breaker is a mechanical switch electric appliance which can connect, bear and break the current under the normal circuit condition and can also connect, bear and break the current for a certain time under the specified abnormal circuit condition. The circuit breaker has overload and short-circuit protection functions and can protect circuits and power supply equipment from being damaged.

The common circuit breaker can complete the automatic switching-off function except when the line current exceeds a preset value or when the line current is short-circuited, and manual operation is needed to realize switching-off or switching-on at other times. When a line breaks down and needs to be operated in a close range, the circuit breaker can generate strong acousto-optic reaction, so that the psychological pressure of operators is caused, and the personal safety is easily damaged.

The development trend of present electrical apparatus is to developing towards intelligent and automatic direction, and technical personnel has also developed the circuit breaker of several electrodynamic types at present and has realized electronic combined floodgate and separating brake, and current electrodynamic type circuit breaker is formed by two independent parts combinations of circuit breaker and electric operating means, all needs the finish machining in the preparation, and the structure is complicated, and for realizing electric operation, like patent number 2018219861190, the patent name is: a circuit breaker with an electric operating device is disclosed, and comprises a circuit breaker and an electric operating device body, wherein an opening and closing handle is arranged on the upper surface of the circuit breaker body; the scheme provides an integrated circuit breaker which is simple in structure, small in size and quality, good in reliability, not prone to damage and low in cost, and the electric control circuit breaker is achieved. However, the above-mentioned solutions have the following problems that the transmission mechanism adopts a worm gear transmission mode, the transmission efficiency is low, the reliability is poor, not only is the power wasted, but also a large power motor which exceeds the requirement is necessary to be used, the corresponding size is difficult to control, and the cost and the spatial layout are affected.

Disclosure of Invention

The utility model aims at providing a simple structure, the circuit breaker of taking electric drive mechanism that the good reliability, transmission efficiency are high, the cost is lower.

The utility model aims at realizing through the following technical scheme: a circuit breaker with an electric operating device comprises a circuit breaker body and the electric operating device, wherein a switching-on/off handle is arranged on the upper surface of the circuit breaker body, and the electric operating device comprises an electric driving mechanism, an intermediate transmission mechanism, a one-way transmission mechanism, a handle pushing mechanism, a fixed upper plate and a fixed lower plate; the method is characterized in that:

the electric driving mechanism comprises a motor, the motor is fixedly connected with the fixed upper plate, and the output end of the motor is connected with the intermediate transmission mechanism;

the middle transmission mechanism is positioned between the fixed upper plate and the fixed lower plate and comprises a first-stage gear, a second-stage gear and a third-stage gear which are in reduction meshing transmission in sequence, the first-stage gear and the second-stage gear comprise a large gear and a small gear which are coaxially arranged, the output end of the motor is provided with a driving gear, and the driving gear is meshed with the large gear of the first-stage gear; the large gear of the second-stage gear is meshed with the small gear of the first-stage gear, and the small gear of the second-stage gear is meshed with the third-stage gear; the three-level gear is matched with the fixed upper plate and the fixed lower plate through corresponding gear shafts respectively; two ends of the third gear shaft respectively extend out of the fixed upper plate and the fixed lower plate, and a one-way needle bearing is arranged inside the third gear to realize one-way transmission; the third gear shaft is provided with a handle pushing mechanism at the lower end thereof and a manual operation hole at the upper end thereof.

Further: and copper sleeves are arranged at the matching parts of the gear shafts and the fixed upper plate and the fixed lower plate.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has simple structure, small volume and mass, good reliability, uneasy damage and low cost; the automatic reclosing device has the advantages that the layout of the circuit breaker is optimized, the circuit breaker can be installed quickly, the structure is compact, the installation of the conventional circuit breaker in a switch cabinet is not influenced in the structural height after the electric operating device is electrified, the automatic reclosing function of the circuit breaker is realized, and the modularization and integration functions of conventional products are realized.

Drawings

FIG. 1 is a general assembly diagram of the present invention;

FIG. 2 is a schematic view of a part of the structure of the present invention;

FIG. 3 is a schematic view of the electric driving mechanism of the present invention;

FIG. 4 is a schematic view of the structure of the intermediate transmission mechanism of the present invention;

fig. 5 is a schematic view of the structure and the explosion of the present invention.

Shown in the figure: 300 is a one-way transmission mechanism; 400 is a handle pushing mechanism; 500 is an intermediate transmission mechanism; 1. an upper cover; 2. a middle cover; 3. a base; 4. a see-through hole; 5. a manual operation hole; 6. a switch; 7. an indication button; 8. a display screen; 12. a motor; 13. fixing the upper plate; 14. a third gear shaft; 15. a bolt; 16. fixing the lower plate; 17. a first stage gear; 19. A third stage gear; 20. a pillar; 21. a slider; 22. a slide bar; 23. a copper sleeve; 24. a second stage gear; 27. a cam; 28. a retainer ring; 29. positioning the shaft; 30. a deep groove ball bearing; 31. a limiting ring; 32. a one-way needle bearing; 33. a drive gear; 34. and a sliding block fixing plate.

Detailed Description

As shown in fig. 1-5, the utility model discloses a circuit breaker with an electric operating device, which comprises a circuit breaker body and an electric operating device, wherein the upper surface of the circuit breaker body is provided with a switching-on/off handle, and the electric operating device comprises an electric driving mechanism, an intermediate transmission mechanism 500, a one-way transmission mechanism 300, a handle pushing mechanism 400, a fixed upper plate 13 and a fixed lower plate 16; the electric driving mechanism comprises a motor 12, the motor is fixedly connected with the fixed lower plate, and the output end of the motor is connected with the intermediate transmission mechanism;

the middle transmission mechanism is positioned between the fixed upper plate and the fixed lower plate and comprises a first-stage gear 17, a second-stage gear 24 and a third-stage gear 19 which are in reduction meshing transmission in sequence, the first-stage gear and the second-stage gear comprise a large gear and a small gear which are coaxially arranged, the output end of the motor is provided with a driving gear 33, and the driving gear is meshed with the large gear of the first-stage gear; the large gear of the second-stage gear is meshed with the small gear of the first-stage gear, and the small gear of the second-stage gear is meshed with the third-stage gear; the three-level gear is matched with the fixed upper plate and the fixed lower plate through corresponding gear shafts respectively; two ends of the third gear shaft 14 respectively extend out of the fixed upper plate and the fixed lower plate, and a one-way needle bearing is arranged in the third gear to realize one-way transmission; the third gear shaft is provided with a handle pushing mechanism at the lower end thereof and a manual operation hole at the upper end thereof.

Preferably: copper sleeves 23 are arranged at the matching positions of the gear shafts and the fixed upper plate and the fixed lower plate.

Examples

As shown in fig. 1, the utility model provides a circuit breaker with electric operating device, including upper cover 1, middle cover 2, base 3 and perspective hole 4, manual operation hole 5, switch 6, indicator button 7, display screen 8 arranged on upper cover 1; and a breaker body and a switching-on/off handle exposing the middle cover 2 are arranged in the base 3.

As shown in fig. 2, for the utility model discloses remove the schematic structure of upper cover 1, electric operating means can assemble earlier after whole again and circuit breaker in lid 2 fix simple to operate.

As shown in fig. 3, the upper mounting plate 13 and the lower mounting plate 16 are fixed together by bolts 15 after being positioned by the pillars 20; the motor 12 is fixed on the upper mounting plate 16 through bolts, and an intermediate transmission mechanism and a one-way movement mechanism are arranged between the upper mounting plate 13 and the lower mounting plate 16; the lower portion of the lower mounting plate 16 is provided with 4 mounting holes for integrally fixing the electric operation device to the middle cover 2.

As shown in fig. 4, the output shaft of the motor 12 is in interference fit with the driving gear, the first-stage gear is in interference fit with the gear shaft, the first-stage gear is meshed with the motor output driving gear, the motor 12 rotates to drive the driving gear to move synchronously, and the driving gear drives the first-stage gear and the corresponding gear shaft to move; the pinion on the gear shaft is meshed with the second-stage gear to move; the second-stage gear is in interference fit with a corresponding gear shaft and performs synchronous motion; the pinion on the gear shaft 25 is meshed with the third-stage gear, and the pinion on the gear shaft 25 drives the third-stage gear to move; copper sleeves are respectively installed at two ends of the gear shaft and are respectively matched with the fixed upper plate and the fixed lower plate.

As shown in fig. 5, the unidirectional movement mechanism includes a cam 27, a retainer ring 28, the third stage gear shaft 14, and a unidirectional needle bearing 32; the third-stage gear shaft 14 is sequentially provided with a copper bush 23, a third-stage gear, a one-way needle bearing 32, a retainer ring 28 and a cam 27, the one-way needle bearing 32 is arranged inside the gear 19 and is in interference fit with the third-stage gear, and the copper bush is arranged in a mounting hole for fixing the upper plate and the lower plate; the cam is arranged at the lower part of the third-stage gear shaft and is fixed on the third-stage gear shaft 14 through a retainer ring 28 to form an integral structure with the third-stage gear shaft 14, and the installation position of the cam 27 is arranged below the fixed lower plate 16; a positioning shaft 29 is arranged on the cam 27, a limiting ring 31 and a deep groove ball bearing 30 are sequentially arranged on the positioning shaft 29, the positioning shaft and the cam 27 form an integral structure after riveting, the cam 27 is driven to move through the movement of the third-stage gear shaft 14, and the cam 27 drives the sliding block 21 to move; because the unidirectional needle bearing 32 is arranged in the third-stage gear, when the motor 12 runs, the integral structure of the rotating shaft can only move in a unidirectional way and cannot move in a reverse direction under the action of the motor 12.

The transmission mechanism comprises a sliding rod 22, a sliding block and a fixed lower plate 16; the sliding block consists of a rubber block 21 and a sliding block mounting plate 34; grooves are formed in two sides of the rubber block 21 and used for limiting the sliding rod 22, and a rectangular groove is formed in the center of the rubber block 21 and used for limiting the opening and closing handle; the slider overall structure moves along the slide bar 22, and the motion of slider drives the divide-shut brake handle and moves, realizes the function of separating brake and closing a floodgate. The sliding rod 22 passes through the groove on the sliding block and is fixed on the fixed lower plate 16 through a countersunk head bolt.

Compared with the prior art, the utility model improves the original worm gear structure into gear group transmission, so that the structure of the utility model is simple, the volume and the quality are small, the reliability is good, the damage is not easy, and the cost is low; the automatic reclosing device has the advantages that the layout of the circuit breaker is optimized, the circuit breaker can be installed quickly, the structure is compact, the installation of the conventional circuit breaker in a switch cabinet is not influenced in the structural height after the electric operating device is electrified, the automatic reclosing function of the circuit breaker is realized, and the modularization and integration functions of conventional products are realized. After improvement, the transmission efficiency is greatly improved and can be improved to more than 98 percent from the original less than 50 percent.

Claims (2)

1. A circuit breaker with an electric operating device comprises a circuit breaker body and the electric operating device, wherein a switching-on/off handle is arranged on the upper surface of the circuit breaker body, and the electric operating device comprises an electric driving mechanism, an intermediate transmission mechanism, a one-way transmission mechanism, a handle pushing mechanism, a fixed upper plate and a fixed lower plate; the method is characterized in that: the electric driving mechanism comprises a motor for driving, the motor is fixedly connected with the fixed upper plate, and the output end of the motor is connected with the intermediate transmission mechanism; the middle transmission mechanism is positioned between the fixed upper plate and the fixed lower plate and comprises a first-stage gear, a second-stage gear and a third-stage gear which are in reduction meshing transmission in sequence, the first-stage gear and the second-stage gear comprise a large gear and a small gear which are coaxially arranged, the output end of the motor is provided with a driving gear, and the driving gear is meshed with the large gear of the first-stage gear; the large gear of the second-stage gear is meshed with the small gear of the first-stage gear, and the small gear of the second-stage gear is meshed with the third-stage gear; the three-level gear is matched with the fixed upper plate and the fixed lower plate through corresponding gear shafts respectively; two ends of the third gear shaft respectively extend out of the fixed upper plate and the fixed lower plate, and a one-way needle bearing is arranged inside the third gear; the lower end of the third gear shaft is provided with a handle pushing mechanism matched with the opening and closing handle, and the upper end of the third gear shaft is provided with a manual operation hole.

2. The circuit breaker with an electrically operated device according to claim 1, wherein: and copper sleeves are arranged at the matching positions of the gear shafts corresponding to the gears of each stage and the fixed upper plate and the fixed lower plate.

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