Energy storage type operating mechanism for circuit breaker

Abstract

The invention relates to an energy storage type operating mechanism for a circuit breaker, which comprises a crank arm assembly, a tripping assembly, a tripping driving assembly, a bracket and a manual energy storage driving assembly, wherein the manual energy storage driving assembly comprises a driving shaft connected to the crank arm assembly, a first ratchet wheel arranged on the driving shaft, a rotating handle arranged on the driving shaft, a first ratchet arranged on the rotating handle and a first reset spring, and the first ratchet is matched with the first ratchet wheel; a second ratchet wheel is arranged on the driving shaft, a second ratchet is arranged on the support, and the second ratchet wheel is matched with the second ratchet. Manual energy storage operation is achieved through cooperation of the first ratchet wheel and the first ratchet, meanwhile, what is guaranteed is that the rotating shaft can only rotate in the same direction and cannot rotate in the reverse direction through cooperation of the second ratchet wheel and the second ratchet, the energy storage position is kept, the energy storage mechanism can be suitable for application occasions needing rapid closing, and meanwhile in the maintenance process, maintenance personnel can manually store and release energy on site, the freedom degree of on-site maintenance is improved, and operation is convenient.

Description

technical field [0001] The invention relates to the technical field of circuit breaker control, in particular to an energy storage type operating mechanism for a circuit breaker. Background technique [0002] Most of the electric operating mechanisms used by circuit breakers on the market can be controlled remotely, and the opening or closing time takes about 1 second, which cannot meet the occasions of fast closing operation after receiving the closing command. Operating mechanism with reduced closing operation time. [0003] At present, there are many energy-storage electric operating mechanisms on the market that can shorten the time to within 100 milliseconds. It can store mechanical energy and release mechanical energy to achieve the purpose of rapid closing when closing is required; Chinese patent (CN107910235B) discloses An energy storage operating mechanism of a circuit breaker is developed, which mainly drives the movement of the crank arm assembly in it through th...

AI Technical Summary

Problems solved by technology

[0002] Most of the electric operating mechanisms used by circuit breakers on the market can be controlled remotely, and the opening or closing time takes about 1 second, which cannot meet the occasions of fast closing operation after receiving the closing command. Operating mechanism with reduced closing operation time

[0003] At present, there are many energy-storage electric operating mechanisms on the market that can shorten the time to within 100 milliseconds. It can store mechanical energy and release mechanical energy to achieve the purpose of rapid closing when closing is required; Chinese patent (CN107910235B) discloses An energy storage operating mechanism of a circuit breaker is developed, which mainly drives the movement of the crank arm assembly in it through the electric gear set of the motor, and at the same time releases the mechanical energy through the electromagnet to realize fast closing; but at present, this structure can only It is controlled by sending a remote electrical signal to the motor, and when the line is being maintained, it is necessary to disconnect the circuit breaker and store energy at the same time, all of which need to be controlled remotely, and the maintenance personnel on site need to wait for the energy storage to be completed, which is very inconvenient to use. convenient

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