Mechanical interlocking mechanism between upper and lower drawers of low-voltage drawer cabinet

Abstract

The invention discloses a mechanical interlocking mechanism between the upper drawer and the lower drawer of the low-voltage drawer cabinet. A second operation square shaft serves as the axis, the second operation square shaft rotates forwards or backwards, and the other end of a connecting part rotates in a triangular core, thereby achieving the vertical up-and-down movement of a square rod; a second incoming line drawer carries out closing operation, the second operation square shaft rotates clockwise by 90 degrees, the square rod is pressed downwards, and vertically moves downwards after passing through a bottom plate, a layer partition plate and a supporting plate of the second incoming line drawer, so that a clamping part at the bottom is downwards clamped on the first operation square shaft, and at the moment, a first operation square shaft in the first incoming line drawer cannot be switched on for rotating operation, thereby achieving the interlocking purpose; when the second incoming line drawer is switched off, the second operating square shaft rotates 90 degrees anticlockwise, the square rod is vertically upward, the supporting plate is reset under the action of a springand a pin, the clamping part is separated from the first operating square shaft, and the first operating square shaft can be switched on normally. The structure is simple, a molded shell switch is arranged in the drawer, the maintenance convenience is improved, and the safety and reliability are realized through mechanical interlocking.

Description

technical field [0001] The invention relates to the technical field of low-voltage switch cabinets, in particular to a mechanical interlocking mechanism between upper and lower drawers of a low-voltage drawer cabinet. Background technique [0002] With the rapid development of power grid construction, the demand for various switch cabinets continues to increase, especially the MNS drawer cabinet has the advantages of simple interlocking mechanism, safety and reliability, flexible interchange of drawers, high safety performance, and good protection level. The market prospect broad. [0003] In order to ensure the continuous reliability of power supply, the MNS incoming line is often set up with two incoming lines plus one connection incoming line scheme. The incoming line switch of this scheme is generally a frame circuit breaker switch. In addition to the electrical interlock of automatic switching, the mechanical interlock is realized by means of three locks and two keys. ...

AI Technical Summary

Problems solved by technology

At present, the two plastic case switches (manually operated inside the drawer) have only electrical interlocking. In order to improve safety and reliability, this mechanical interlocking mechanism is designed and developed.

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