Anti-misoperation interlocking device for low-voltage cabinet electric operation switch drawer unit

Abstract

The invention provides an anti-misoperation interlocking device for a low-voltage cabinet electric operation switch drawer unit and the low-voltage cabinet electric operation switch drawer unit. The anti-misoperation interlocking device comprises an interlocking mechanism and a locking circuit which are installed on the drawer unit. The locking circuit comprises an electromagnetic lock, an electric operating mechanism and a plastic shell switch with a closing auxiliary contact, the electromagnetic lock comprises a lock cylinder, the plastic shell switch is electrically connected with the electromagnetic lock and can supply power to or cut off power from the electromagnetic lock through opening and closing of the closing auxiliary contact, and therefore the lock cylinder of the electromagnetic lock stretches out or draws back. The electric operating mechanism is electrically connected with the plastic shell switch; the interlocking mechanism comprises a mechanical unlocking button, an unlocking push rod, an interlocking mechanism protection plate, a reset spring, a transmission gear, a gear rigid connection shaft, a drawer locking bolt and a limiting structure. By means of the interlocking mechanism and the locking circuit, misoperation interlocking of the low-voltage cabinet electric operating switch drawer is reliably prevented, the drawer is prevented from being pulled out orinserted when loaded, and personal safety and operation reliability are guaranteed.

Description

technical field [0001] The invention relates to a misoperation preventing interlocking device for an electric switch drawer unit of a low-voltage cabinet, and belongs to the technical field of low-voltage withdrawable switch cabinets. Background technique [0002] In the standard low-voltage power distribution system, the drawer cabinet is widely used because of its high reliability, easy maintenance, and beautiful appearance. At the same time, with the promotion of intelligent power distribution technology and unattended technology, more and more low-voltage molded case switches are installed with electric operating mechanisms to achieve remote / local control. In the past, the drawer-type molded case switch generally used a manual operation handle to realize mechanical locking, so that the drawer could only be pulled out for inspection when the circuit breaker was in the off state. [0003] The structure of the live-operated plastic case switch is different from that of the...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a misoperation-preventing interlocking device for the electric switch drawer unit of the low-voltage cabinet, which is used to solve the problem that when the electric switch is installed in the drawer, the interlock cannot be realized by setting the manual operation handle problem of protection

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