Drawer limiting device for low-pressure drawer-type switch cabinets

Abstract

A drawer limiting device for low-pressure drawer-type switch cabinets of the invention comprises a limiting bracket fixedly installed on a low-pressure switch cabinet drawer body. A limiting shaft isarranged in the pin shaft holes of the upper and lower folding edges of the limiting bracket. One end of the vertical side of an L-shaped limiting shift plate is hinged to the side plate of the limiting bracket through a pin shaft, and the bottom side is clamped into a limiting groove in the middle section of the limiting shaft through a forked open slot. A compression spring sleeves the limitingshaft between the bottom side of the limiting shift plate and the upper folding edge of the limiting bracket. The limiting bracket is fixedly installed on the side plate of the low-pressure switch cabinet drawer body by means of riveting. The limiting shaft is pushed by the elastic resilience of the compression spring to extend downward into a positioning hole of a drawer partition plate. The drawer limiting device has a simple structure, is time-saving and labor-saving, and is accurate and reliable in positioning. The parts are made of leftover materials, and the utilization rate of raw materials is high.

Description

technical field [0001] The invention relates to a low-voltage drawer-type switch cabinet drawer limiting device, which is specifically applied to the technical field of low-voltage switch cabinet manufacturing and installation in the power transmission and distribution industry. Background technique [0002] The drawer of the 8PV low-voltage switchgear in the prior art is usually limited by the limit plate. When the drawer body is deformed or the matching accuracy is low, the limit error of the limit plate is large, and it cannot be effectively positioned, resulting in one or two dynamic and static contacts. When the heads are engaged, the drawer will retreat under the reaction force of the contacts, causing the mating surfaces of the primary and secondary dynamic and static contacts to fail to reach the working stroke, unstable contact, unreliable connection, and easy to cause switchgear failure during power transmission and distribution. The safety factor not tall. Conte...

AI Technical Summary

Problems solved by technology

[0002] The drawer of the 8PV low-voltage switchgear in the prior art is usually limited by the limit plate. When the drawer body is deformed or the matching accuracy is low, the limit error of the limit plate is large, and it cannot be effectively positioned, resulting in one or two dynamic and static contacts. When the heads are engaged, the drawer will retreat under the reaction force of the contacts, causing the mating surfaces of the primary and secondary dynamic and static contacts to fail to reach the working stroke, unstable contact, unreliable connection, and easy to cause switchgear failure during power transmission and distribution. The safety factor not tall

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