Interlocking device for earthing switch operating mechanism and chassis locking mechanism

Abstract

The invention relates to an interlocking device for an earthing switch operating mechanism and a chassis locking mechanism, which comprises a chassis locking mechanism and an earthing switch operating hole baffle installed on a machine cabinet bracket, wherein a screw rod block plate of the chassis locking mechanism is installed on a breaker room bracket, a limit surface at the rear of the screw rod block plate corresponds to a limit surface at the tail of the screw rod, a reset spring is installed on a locking spindle, a driving bracket is fixed on the locking spindle, a transition shaft installed on the driving bracket is arranged in poke holes in the two side plates of the baffle, both ends of a spring sheathed on the transition shaft abut against one side of the driving bracket and an indication baffle, and the baffle corresponds to the front part of the screw rod block plate; and a rocker arm is installed on the locking spindle, one end of the rocker arm is hinged with an upper connecting rod, the other end of the upper connecting rod is hinged with the middle part of the transition connecting rod, one end of the transition connecting rod is hinged with the breaker room bracket, the other end of the transition connecting rod is hinged with a lower connecting rod, and the other end of the lower connecting rod is hinged with the earthing switch operating hole baffle. The interlocking device provided by the invention has a reasonable and compact structure, and the operating security can be improved.

Description

technical field [0001] The invention relates to an interlocking device of a grounding switch operating mechanism and a chassis vehicle locking mechanism, and belongs to the technical field of medium and high voltage removable switch devices. Background technique [0002] The medium and high voltage switchgear is usually composed of a control room, a circuit breaker room, a busbar room and a cable room. A group of static contact seats as a static contact device are fixed in the chamber of the circuit breaker room. The outgoing static contact is connected with the external high-voltage power supply circuit. When the circuit breaker chassis is pushed into the circuit breaker room, the upper and lower contacts of the circuit breaker chassis are respectively engaged with the static contacts of the incoming and outgoing lines. After the circuit breaker is closed, the connection on the circuit is realized. After operating the propulsion mechanism to push the circuit breaker chassi...

AI Technical Summary

Problems solved by technology

However, because there is no effective interlock mechanism between the grounding switch operation and the chassis locking mechanism, the operator can still insert the operating handle into the propulsion mechanism wire at the test position because the cabinet door of the circuit breaker room is open. The operating end of the lever is forcibly operated, resulting in damage to the components in the switchgear, seriously affecting the normal operation of the equipment and personal safety

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