CN215377315U

CN215377315U - Circuit breaker mechanism

Info

Publication number: CN215377315U
Application number: CN202120541288.9U
Authority: CN
Inventors: 刘鑫
Original assignee: Suzhou Dabosi Smart Grid Equipment Manufacturing Co ltd
Current assignee: Suzhou Dabosi Smart Grid Equipment Manufacturing Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-31
Anticipated expiration: 2031-03-16

Abstract

The utility model relates to the technical field of circuit breaking driving devices, in particular to a circuit breaker mechanism. The oil buffer mechanism comprises a main frame box body, a circuit breaking mechanism, an oil buffer mechanism and an energy storage device, wherein the circuit breaking mechanism, the oil buffer mechanism and the energy storage device are arranged in the main frame box body, the circuit breaking mechanism and the oil buffer mechanism are arranged in a matched mode, the circuit breaking mechanism comprises a connecting lever, a first connecting plate, a second connecting plate, a switch-on accessory and an auxiliary switch, the connecting lever is connected with a switch, the first connecting plate is connected with the connecting lever, the second connecting plate is connected with the first connecting plate, the switch-on accessory is connected with the lower end of the second connecting plate, the auxiliary switch is connected with the end portion of the second connecting plate in a matched mode, the oil buffer mechanism comprises a main connecting lever, a connecting plate, an auxiliary connecting plate, an idler wheel, a main shaft and an oil buffer, the main shaft is connected with the front end of the main connecting plate, the main shaft is fixed on two sides of the connecting lever and the auxiliary connecting plate, and the oil buffer is arranged on the main shaft. The utility model has the advantages that: adopt elastic component to play buffering, limiting displacement, at drive arrangement during operation, reduce impact and resilience, improved electrical apparatus life.

Description

Circuit breaker mechanism

Technical Field

The utility model relates to the technical field of circuit breaking driving devices, in particular to a circuit breaker mechanism.

Background

At present, a driving device of a high-voltage vacuum circuit breaker adopts a cam swing rod transmission mechanism, strong impact and rebound can be generated in the switching-on and switching-off processes, even the switching-on, switching-off and switching-on phenomena of movable contacts and static contacts can be caused, and the burning loss of the contacts is serious. The transmission ratio of a driving part and a driven part of a cam oscillating bar mechanism is 1: 1, designed at 11: when the circuit breaker operates at 0% and 85% rated closing voltage, the closing speed of the circuit breaker is unstable because the force of the matched CD-10 electromagnetic operation device is greatly influenced by the voltage change, and the speed is higher than 0.6 m/s at high voltage; the speed is lower than 0.4 m/s at low voltage, and the use technical requirements cannot be well met.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a circuit breaker mechanism to overcome the above-mentioned disadvantages of the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a circuit breaker mechanism, characterized by: the oil buffer mechanism comprises a main crank arm, a connecting plate connected to the front end of the main crank arm, an auxiliary connecting plate connected to the connecting plate, a roller arranged at the end of the auxiliary connecting plate, a main shaft connected to the two sides of the auxiliary connecting plate, and an oil buffer arranged on the main shaft, wherein the main shaft is fixed on the two sides of the main shaft, the connecting plate is connected between the second connecting plate and the roller, the energy storage device comprises a cam wheel arranged in the main frame box, an oil buffer mechanism and an oil storage device, the oil buffer mechanism is arranged in the main frame box, the circuit breaking mechanism and the oil buffer mechanism are matched, the circuit breaking mechanism is arranged in the main frame box, the oil buffer mechanism is arranged on the connecting plate and matched with the main shaft, the first connecting plate is connected with the connecting plate of the switch, the second connecting plate is connected to the first connecting plate, the auxiliary connecting plate is connected to the lower end of the second connecting plate, the roller is connected to the lower end of the second connecting plate, the auxiliary connecting plate is arranged at the end of the second connecting plate, the auxiliary connecting plate, the roller is arranged on the end of the auxiliary connecting plate, and the auxiliary connecting plate is arranged on the main shaft wheel, The convex shaft wheel is matched with a pawl shaft arranged through a bearing, a motor connected with the pawl shaft through a belt pulley, an energy storage indicating shaft connected with the convex shaft wheel through a wheel and a connecting plate, two ends of the convex shaft wheel are connected with a tension spring through a bearing, and the other end of the tension spring is fixed at the bottom of the main frame box body through a pin.

Preferably, an auxiliary switch is further arranged in the main frame box body, and the auxiliary switch is connected with a tripping half shaft and an overcurrent electromagnet through a connecting rod.

Preferably, the motor is arranged at the bottom of the main frame box body.

Preferably, the switch rotating end is connected with the connecting end of the crank arm through a spring.

Preferably, the oil buffer is arranged by matching the spindle through a shaft sleeve.

Preferably, the outer side of the main frame box body is provided with a mounting plate, and a hole type plug with cage spring clamping are arranged in the mounting plate.

The utility model has the beneficial effects that: the utility model adopts the elastic parts to play the roles of buffering and limiting, can greatly reduce impact and rebound when the driving device works, enables the moving contact and the static contact to be stably contacted, can effectively avoid the phenomena of closing, separating and closing, and prolongs the service life of the electric appliance.

Drawings

Fig. 1 is a front view of a circuit breaker mechanism of the present invention;

fig. 2 is a side view of a circuit breaker mechanism of the present invention;

fig. 3 is a partial schematic view of a circuit breaker mechanism of the present invention;

fig. 4 is a schematic diagram of a circuit breaker mechanism of the present invention;

in the figure: 1. a main frame box; 11. an auxiliary switch; 12. a connecting rod; 13. tripping half shaft; 14. an overcurrent electromagnet; 15. mounting a plate; 16. a hole type plug with cage type spring clamping; 17. A hole type plug with cage type spring clamping; 2. a circuit breaking mechanism; 3. an oil buffer mechanism; 4. an energy storage device; 21. a switch; 22. a crank arm; 23. a first connecting plate; 24. a second connecting plate; 25. a closing accessory; 26. an auxiliary switch; 31 a main crank arm; 32. connecting plates; 33. a secondary connecting plate; 34. a roller; 36. a main shaft; 37. an oil buffer; 41. a cam wheel; 42. a pawl shaft; 43. a motor; 44. a wheel; 45. an energy storage indicating shaft; 46. a tension spring; 47. and (4) a pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 4, the present embodiment is a circuit breaker mechanism, including a main frame case 1, a circuit breaking mechanism 2, an oil buffer mechanism 3 and an energy storage device 4, which are disposed in the main frame case, the circuit breaking mechanism 2 is disposed in cooperation with the oil buffer mechanism 3, the circuit breaking mechanism 2 includes a connecting lever 22 disposed in connection with a switch 21, a first connecting plate 23 connected with the connecting lever 22, a second connecting plate 24 connected with the first connecting plate 23, a closing fitting 25 connected with a lower end of the second connecting plate 24 and an auxiliary switch 26 mounted at an end of the second connecting plate 24 in cooperation with a bracket, the oil buffer mechanism 3 includes a main connecting lever 31, a connecting plate 32 connected with a front end of the main connecting lever 31, an auxiliary connecting plate 33 connected with the connecting plate 32, a roller 34 disposed at an end of the auxiliary connecting plate 33, the connecting lever 22 connected with the auxiliary connecting plate 33, a main shaft 36 fixed at both sides of the connecting lever 35 and an oil buffer 37 mounted on the main shaft 36, the energy storage device 4 comprises a cam wheel 41 arranged in the main frame box 1, a catch shaft 42 which is installed by the cam wheel 41 in a matched mode through a bearing, a motor 43 which is connected with the catch shaft 42 through a belt pulley, an energy storage indicating shaft 45 which is connected with the cam wheel 41 through a wheel 44 and a connecting plate, wherein the two ends of the cam wheel 41 are connected with a tension spring 46 through a bearing, and the other end of the tension spring 46 is fixed to the bottom of the main frame box 1 through a pin 47.

Preferably, an auxiliary switch 11 is further arranged in the main frame box 1, and the auxiliary switch 11 is connected with a tripping half shaft 13 and an overcurrent electromagnet 14 through a connecting rod 12.

Preferably, the motor 43 is disposed at the bottom of the main frame case 1.

Preferably, the rotating end of the switch 21 is connected with the connecting end of the crank arm through a spring.

Preferably, the oil damper 37 is disposed to be engaged with the main shaft through a bushing.

Preferably, a mounting plate 15 is provided on the outer side of the main frame casing 1, and a hole type plug 16 with a cage spring clamp and a hole type plug 17 with a cage spring clamp are provided in the mounting plate 15.

When the implementation case is implemented, the switch is pressed, the auxiliary switch is driven by driving the connecting lever, the first connecting plate and the second connecting plate to be sequentially linked, the main driving shaft is driven to rotate, the switch of the closing accessory is rotated to the oil buffer, the oil buffer is ejected out for switching, and the motor rotates and rotates in the whole process to be matched with the pawl shaft for speed reduction.

The utility model has the advantages that the elastic parts are adopted to play the roles of buffering and limiting, when the driving device works, the impact and resilience can be greatly reduced, the moving contact and the static contact are stably contacted, the phenomena of closing, opening and closing can be effectively avoided, and the service life of the electric appliance is prolonged.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A circuit breaker mechanism, characterized by: the oil buffer mechanism comprises a main crank arm, a connecting plate connected to the front end of the main crank arm, an auxiliary connecting plate connected to the connecting plate, a roller arranged at the end of the auxiliary connecting plate, a main shaft connected to the two sides of the auxiliary connecting plate, and an oil buffer arranged on the main shaft, wherein the main shaft is fixed on the two sides of the main shaft, the connecting plate is connected between the second connecting plate and the roller, the energy storage device comprises a cam wheel arranged in the main frame box, an oil buffer mechanism and an oil storage device, the oil buffer mechanism is arranged in the main frame box, the circuit breaking mechanism and the oil buffer mechanism are matched, the circuit breaking mechanism is arranged in the main frame box, the oil buffer mechanism is arranged on the connecting plate and matched with the main shaft, the first connecting plate is connected with the connecting plate of the switch, the second connecting plate is connected to the first connecting plate, the auxiliary connecting plate is connected to the lower end of the second connecting plate, the roller is connected to the lower end of the second connecting plate, the auxiliary connecting plate is arranged at the end of the second connecting plate, the auxiliary connecting plate, the roller is arranged on the end of the auxiliary connecting plate, and the auxiliary connecting plate is arranged on the main shaft wheel, The convex shaft wheel is matched with a pawl shaft arranged through a bearing, a motor connected with the pawl shaft through a belt pulley, an energy storage indicating shaft connected with the convex shaft wheel through a wheel and a connecting plate, two ends of the convex shaft wheel are connected with a tension spring through a bearing, and the other end of the tension spring is fixed at the bottom of the main frame box body through a pin.

2. A circuit breaker mechanism according to claim 1 wherein: still be provided with auxiliary switch in the main frame box, auxiliary switch is connected with dropout semi-axis, overcurrent electromagnet through the connecting rod.

3. A circuit breaker mechanism according to claim 1 wherein: the motor is arranged at the bottom of the main frame box body.

4. A circuit breaker mechanism according to claim 1 wherein: and the rotating end of the switch is connected with the connecting end of the crank arm through a spring.

5. A circuit breaker mechanism according to claim 1 wherein: the oil buffer is matched with the main shaft through a shaft sleeve.

6. A circuit breaker mechanism according to claim 1 wherein: the outer side of the main frame box body is provided with a mounting plate, and a hole type plug with cage spring clamping are arranged in the mounting plate.