Circuit breaker spring operating mechanism

Abstract

The invention discloses a spring operating mechanism of a circuit breaker. The mechanism comprises a switching-on assembly, an switching-off assembly, a transmission assembly and an output assembly which are connected in a shell frame; the output assembly comprises an output shaft and an output crank arm connected to the output shaft. The switching-on assembly comprises a switching-on half shaft and an energy storage maintaining latch connected to the switching-on half shaft. The transmission assembly comprises an energy storage shaft, the energy storage shaft is connected with a closing spring, and the energy storage shaft rotates to compress the closing spring to realize energy storage; the energy storage shaft rotates to drive a first roller on a cam on the energy storage shaft to be incontact connection with the energy storage maintaining latch to achieve energy storage maintaining; the switching-on spring is reset to realize switching-on; the switching-on spring resets to drive aswitching-on keeping latch on the energy storage shaft to rotate, and the switching-on keeping latch is in contact connection with a third roller on the output crank arm to realize switching-on keeping; the switching-off assembly is used for switching-on. According to the invention, part reuse is achieved, the total number of parts is greatly reduced, and the beneficial effects of being simple instructure and high in reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of switchgear control, in particular to a circuit breaker spring operating mechanism. Background technique [0002] As an important switching element in the power system, the circuit breaker plays a role in control and protection. The reliability and intelligence level of its action directly determine the reliability and automation level of power supply and distribution in the power system. The existing vacuum circuit breaker spring operating mechanism has problems such as complex structure, large volume, low stability, and difficult maintenance in the later stage. At present, the integrated spring operating mechanism and single-component spring operating mechanism widely used in China mostly adopt welded frame structure, which is prone to welding deformation and low positioning accuracy; the existing circuit breaker operating mechanism has a large number of components and product stability. And the reliabi...

AI Technical Summary

Problems solved by technology

The existing vacuum circuit breaker spring operating mechanism has problems such as complex structure, large volume, low stability, and difficult maintenance in the later stage

At present, the integrated spring operating mechanism and single-component spring operating mechanism widely used in China mostly adopt welded frame structure, which is prone to welding deformation and low positioning accuracy; the existing circuit breaker operating mechanism has a large number of components and product stability. and low reliability; the existing circuit breaker operating mechanism also has the disadvantages of large impact force and low service life when closing and opening

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