Switch cabinet grounding switch and lower door interlocking mechanism

Abstract

The invention relates to a switch cabinet part structure, and in particular relates to a switch cabinet grounding switch and lower door interlocking mechanism. The mechanism comprises a cabinet body, wherein a grounding switch is arranged in the middle of the cabinet body; the lower part of the cabinet body is provided with a fuse chamber; the front end of the fuse chamber is provided with a lower door; the front end of an operating shaft of the grounding switch is a shaft head which can be inserted and matched with the operating handle; an interlocking disc which can rotate along the shaft head is connected to the shaft head; a connecting rod is hinged to the edge of the interlocking disc; the lower end of the connecting rod is hinged with a lock pin; the lock pin can be driven to vertically move on a guide seat through the connecting rod due to rotation of the interlocking disc; and when the lower door is in a closed state, the lock pin moves up and down and can be inserted out of or into a locking hole in a top frame of the lower door. The switch cabinet grounding switch and lower door interlocking mechanism is simple in structure, fewer in transmission links, convenient to mount and debug and high in action reliability.

Description

technical field [0001] The invention relates to a component structure of a switch cabinet, in particular to an interlocking mechanism of a ground switch and a lower door of a switch cabinet. Background technique [0002] A fuse room closed by a lower door is usually provided at the lower part of the cabinet of an ordinary switchgear for installing protective components such as fuses. When overhauling the components in the fuse room, on the one hand, it is necessary to operate the grounding switch installed in the middle of the cabinet to the grounding position to ensure the safety of the maintenance process, that is, it is not allowed to open the lower door when the grounding switch is not in the grounding position. Maintenance; on the other hand, it is not allowed to operate the grounding switch when the maintenance is not completed and the lower door is closed, so as to ensure the safety of the maintenance personnel. The above-mentioned safety regulations usually need to ...

AI Technical Summary

Problems solved by technology

The above-mentioned safety regulations usually need to be guaranteed by setting up an interlock mechanism between the grounding switch and the lower door. Most of the existing interlock mechanisms have defects such as complex structure, inconvenient operation, and poor interlock reliability, which cannot meet high safety operation requirements.

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