Electric drawer seat structure of a circuit breaker

Abstract

The invention relates to an electric drawer holder structure of a circuit breaker. The circuit breaker comprises a drawer holder and a circuit breaker body. The drawer holder is provided with a transmission shaft, a motor, a transmission assembly, a clutch mechanism, a screw rod and a drag plate. The motor drives the transmission assembly to act, and the clutch mechanism realizes the connection orseparation between the transmission assembly and the screw rod, the screw rod drives the drawer plate to move, the drawer plate drives the transmission shaft to rotate, and the transmission shaft drives the circuit breaker body to move relative to the drawer holder; the structure is characterized in that the clutch mechanism includes a linkage part, a clutch elastic part and a clutch sliding part, the linkage part is connected with screw rod by synchronous rotation; the clutch sliding part is synchronously rotatable on the linkage part and slidable relative to the linkage part; the clutch elastic part provides a driving force for the clutch sliding part to be combined with the transmission assembly. When the clutch mechanism is in the engaged state, the mating head on the clutch slider isclamped into the clamping cavity of the transmission gear of the transmission assembly, and when the clutch mechanism is in the engaged state, the mating head is clamped into the clamping cavity of the transmission gear of the transmission assembly. When the screw rod cannot rotate, the clamping cavity can push the mating head out to prevent the motor from jamming because of the driving of the motor.

Description

Technical field [0001] The invention belongs to the technical field of circuit breakers, and particularly relates to an electric drawer seat structure of a circuit breaker. Background technique [0002] Due to the convenience of inspection and maintenance, withdrawable universal circuit breakers are widely used. The withdrawable universal circuit breaker is divided into two parts: the circuit breaker body and the drawer base. The drawer base is directly connected to the external power source. Through the drawer base transmission, the circuit breaker body can be pushed or drawn in the drawer base to realize the connection between the main body and the drawer base. Connect and disconnect. As a large-capacity switching element, there is a certain risk when pushing or pulling out the circuit breaker body. Arcs and secondary phenomena caused by circuit faults pose a greater threat to the personal safety of surrounding operators; in addition, as the capacity of the circuit breaker con...

AI Technical Summary

Problems solved by technology

As a large-capacity switching element, there is a certain risk when pushing or pulling out the circuit breaker body. The arc and secondary phenomena generated by circuit faults pose a greater threat to the personal safety of surrounding operators; in addition, with the continuous improvement of the circuit breaker capacity, Increasing drive force required for push or pull operation

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