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Breaking-braking operation mechanism for low-voltage circuit breaker

A low-voltage circuit breaker and operating mechanism technology, which is applied in the field of closing and opening operating mechanisms, can solve the problems of laborious operation and large resistance, and achieve the effect of simple manual operation

Active Publication Date: 2015-07-01
JUBANG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the driving closing and opening operating mechanism of the medium and low voltage circuit breaker in the prior art satisfies the situation that both manual operation and electric operation can be realized, and the manual operation encounters the problem that the resistance is relatively large and the operation is laborious. Therefore, a low-voltage circuit breaker closing and opening operating mechanism with convenient manual operation and labor-saving is provided.

Method used

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  • Breaking-braking operation mechanism for low-voltage circuit breaker
  • Breaking-braking operation mechanism for low-voltage circuit breaker
  • Breaking-braking operation mechanism for low-voltage circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A closing and opening operating mechanism of a low-voltage circuit breaker, such as figure 1 and figure 2 As shown, it includes a frame 1, a motor 2, a drive shaft 3, a closing and opening transmission part 5, a switch handle, an intermittent transmission mechanism, and a controller. The motor 2 is carried by the frame 1 to provide electric driving force; the drive shaft 3 is mounted on the frame 1 through the drive shaft mount 4, and the drive shaft mount 4 is vertical and runs through the The rack 1 is set, and the driving shaft 3 is driven by the driving force; the closing and opening transmission part is driven by the driving shaft 3 to realize the closing and opening operation of the low-voltage circuit breaker; the switch handle (not shown in the figure logo) is connected with the drive shaft 3 to provide manual driving force; the intermittent transmission mechanism is arranged between the output shaft of the motor 2 and the drive shaft 3, and is composed of a d...

Embodiment 2

[0038] This example Figure 4 As shown, the difference from Embodiment 1 is that the actuating part is a flat disk 10 with a notch on one side socketed with the actuating transmission shaft 7, and the two ends of the notch in the circumferential direction are formed with pointed protrusions. The protruding portion 11 is in contact with the free end of the swing rod 6 and collides with the free end, thereby driving the swing rod 6 to swing within the limited range of motion. The working engineering of the second embodiment is obvious to those skilled in the art based on the working process of the first embodiment, and will not be repeated here.

Embodiment 3

[0040] The difference between this embodiment and Embodiment 1 is that the driven component is a gear, and the actuating component is a sector gear. When the motor 2 stops, the sector gear is disengaged from the driven gear. At this time, when the switch handle is manually operated to drive the drive shaft 3, since the gear does not contact the sector gear, no It will be subject to the resistance generated by the constant contact between the driven part and the actuating part in the prior art, so that the manual operation is relatively simple and labor-saving.

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Abstract

The invention provides a breaking-braking operation mechanism for a low-voltage circuit breaker. The breaking-braking operation mechanism comprises a stand, a motor, a driving shaft, a breaking-braking driving part, a switch handle, an interrupted driving mechanism and a controller, wherein the interrupted driving mechanism is arranged between a motor output shaft and the driving shaft and consists of a driven part connected with the driving shaft and an actuating part connected with the output shaft; the actuating part is provided with an action interval and a separation interval; the action interval mutually acts with the driven part; the separation interval is mutually separated from the driven part; and the controller is used for controlling the resting position and the rotating direction of the actuating part and resetting the actuated part to the separation interval when the motor stops. The breaking-braking operation mechanism for the low-voltage circuit breaker, which is disclosed by the invention, is simple and convenient and labor-saving during manual operation.

Description

technical field [0001] The invention relates to a closing and opening operating mechanism of a low-voltage circuit breaker, belonging to the technical field of low-voltage circuit breakers. Background technique [0002] Low-voltage circuit breakers, also known as automatic switches, are capable of connecting, carrying and breaking current under normal circuit conditions, and can also be connected, carried for a certain period of time and A switching device that breaks current. When a serious fault occurs in the power line and the motor and the whole circuit is in an abnormal circuit, the low-voltage circuit breaker can cut off the circuit in time through its own switching operation between closing and opening, so as to protect the power line and the motor. [0003] The operating mechanisms for closing and opening low-voltage circuit breakers are generally divided into manual operating mechanisms and electric operating mechanisms. Protection of lines and motors. There are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/70
Inventor 波官勇张建芳张小昉
Owner JUBANG GRP CO LTD
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