Anti-Misoperation Mechanism of Low-Voltage Fixed Switchgear

Abstract

The invention discloses an anti-error operation mechanism of a low-voltage fixed type switchgear. The anti-error operation mechanism comprises a lock catch which is provided with a through hole and is fixed at the inner side of the door plate of the switchgear; a dead bolt sleeve which is provided with a through hole and is fixed below the lock catch, wherein the through hole of the dead bolt sleeve and the through hole of the lock catch are disposed at the same straight line; a dead bolt whose upper portion is embedded into the through hole of the dead bolt sleeve and is also embedded into the through hole of the lock catch at the same time when an isolation switch is at a switching-on state, wherein the widths of the through holes of the lock catch and the dead bolt sleeve are greater than the width of the upper portion of the dead bolt; and a cam which has a circular upper portion and an elliptical lower portion when the isolation switch is at a switching-on state, wherein the outer edge of an ellipse is provided with a guide rail, the lower portion is fixedly connected with the rotating shaft of the isolation switch, the upper portion of the cam and a pin at the lower portion of the dead bolt are connected through the guide rail, and the connected pin at the lower portion of the dead bolt is parallel to the rotating shaft of the isolation switch. The mechanism provided by the invention can ensure that the door of the switchgear is open only when the isolation switch is switched off, and the safety and convenience are high.

Description

technical field [0001] The invention relates to the technical field of low-voltage power supply equipment, and more specifically, relates to an anti-misoperation mechanism of a low-voltage fixed switchgear. Background technique [0002] Low-voltage fixed switchgear is widely used in distribution stations and box-type substations in urban residential areas, high-rise buildings, factories and other power supply centers. At present, the lower cabinet door of the low-voltage fixed switchgear can perform the opening and closing operation of the isolating switch regardless of whether it is in the open or closed state, which is likely to cause misoperation and lead to electric shock accidents, endangering the personal safety of operators. [0003] In view of the existing problems, there is an urgent need for a safe, reliable, easy-to-use, simple, easy-to-maintain and repair anti-misoperation mechanism for low-voltage fixed switchgears. Contents of the invention [0004] It is an...

AI Technical Summary

Problems solved by technology

At present, the lower cabinet door of the low-voltage fixed switchgear can perform the opening and closing operation of the isolating switch regardless of whether it is in the open or closed state, which is likely to cause misoperation and lead to electric shock accidents, endangering the personal safety of operators.

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