Operating mechanism for automatic reclosing devices

Abstract

An operating mechanism for an automatic reclosing lock device comprises a switch base, a motor assembly, a transmission unit, an execution unit and a motor drive transmission unit, wherein the motor assembly, the transmission unit and the execution unit are installed on the switch base. The transmission unit drives the execution unit to pull a switch lever of a switch. The transmission unit comprises a sliding push block capable of linearly sliding in a reciprocating mode relative to the switch base, the sliding push block is provided with a drive part and an extension part, wherein the drive part is close to the execution unit and linearly slides in a reciprocating mode in the direction the same as the sliding push block direction, and the extension part is connected with the drive part and extends towards the direction away from the execution unit. The free end of the extension part is connected with a swing arm, wherein the swing arm swings to drive the extension part to linearly slide in a reciprocating mode, and is close to the motor assembly and is driven by the motor assembly. Due to the arrangement of the extension part, a motor can be away from a moving contact located below the execution unit, the motor is prevented from being burned by electric arcs generated when the moving contact moves, the electric arcs are prevented from conducting electric conduction through an irony shell of the motor, and therefore stability and reliability of the switch are improved.

Description

technical field [0001] The invention relates to an operating mechanism for an automatic reclosing device, and belongs to the technical field of accessories of low-voltage electrical appliances. Background technique [0002] The automatic reclosing device is an automatic device that automatically switches on the switch after it is tripped due to a fault. Power system operation experience shows that most of the faults of overhead lines are "instantaneous", and the permanent faults are generally less than 10%. Therefore, after the short-circuit fault is cut off by the relay protection action, the arc will be automatically extinguished, and the insulation at the short-circuit can be automatically restored in most cases. Therefore, automatically reclosing the switch not only improves the safety and reliability of the power supply, reduces the loss of power failure, but also improves the transient level of the power system, increases the power transmission capacity of the high-vo...

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is that the motor of the automatic reclosing operating mechanism in the prior art is too close to the switch movable contact, which may easily cause short circuit and arc burns to the motor, thereby causing damage to the switch or even fire, thereby providing a The installation position of the motor is reasonable, and there will be no short circuit or arc burn. The operating mechanism for the automatic reclosing device of the motor

[0007] Another technical problem to be solved by the present invention is that in the prior art, the sliding block of the automatic reclosing operating mechanism driving the closing handle is rigidly connected with the closing handle, which leads to a decrease in the stability and reliability of the switch, or even failure and service life. Short question, so as to provide an operating mechanism for automatic reclosing device that can improve switch stability and reliability, and long service life

[0008] A technical problem to be solved by the present invention is that in the prior art, when the automatic reclosing operating mechanism is manually operated, it is difficult for the operator to operate, so as to provide an operating mechanism for the automatic reclosing device with simple manual operation

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