Gas inflating cabinet grounding switch mechanism and lock catch plate interlocking device

Abstract

The invention discloses a gas inflating cabinet grounding switch mechanism and lock catch plate interlocking device, which comprises a grounding switch operating shaft cam, an interlocking sheet, a lock catch plate and a lock sheet reset spring, wherein the grounding switch operating shaft cam, the interlocking sheet, the lock catch plate and the lock sheet reset spring are used cooperatively, thegrounding switch operation shaft cam is rotatably installed on a gas inflating cabinet, and is used cooperatively with the interlocking sheet below the grounding switch operating shaft cam, the lowerend of the interlocking sheet is buckled and connected with the lock catch plate, the upper end of the locking sheet reset spring is fixed on the gas inflating cabinet, the lower end of the locking sheet reset spring is connected with the interlocking sheet in a hanging and buckling manner, a hanging rod and a guide rod are fixed on the gas inflating cabinet, and are respectively located just over and on the right side of the grounding switch operating shaft cam, a set of notches are formed in the periphery of the grounding switch operating shaft cam, bent buckles used cooperatively with thenotches are fixed to the inner surface of the interlocking sheet, a long circular hole hung to the guide rod is formed in the upper end of the interlocking sheet, and a T-shaped spring bolt is fixed to the tail end of the interlocking sheet. The gas inflating cabinet grounding switch mechanism and lock catch plate interlocking device is simple in structure, few in parts, easy to install and debug,free of the problem of force conduction failure, high in reliability and low in cost.

Description

technical field [0001] The invention relates to the technical field of locking structure of an inflatable cabinet, in particular to a grounding switch mechanism and a locking plate interlocking device of an inflatable cabinet. Background technique [0002] The inflatable cabinet is a DXG-12(C) indoor AC high-voltage gas-insulated metal-enclosed switchgear. The main switch can be a vacuum circuit breaker with a permanent magnet mechanism or a vacuum circuit breaker with a spring mechanism. The whole cabinet adopts air insulation and hexafluoride The combined sulfur gas compartment is both compact and expandable for distribution automation. The inflatable cabinet has the characteristics of compact structure, flexible operation, and reliable interlocking. It can provide satisfactory technical solutions for various applications (especially places with harsh environments) and different user requirements. The adoption of sensor technology and the latest protective relay, coupled ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing inflatable cabinets have the following problems in the process of use: due to the small size of the 12kV inflatable cabinet, the original plastic pull rope interlocking device has many parts and cumbersome structure, which makes installation and debugging difficult, and because the plastic pull rope conduit It is relatively soft, and the plastic conduit is prone to displacement or deformation during the closing and opening process of the grounding switch. As a result, the force of pulling the end of the plastic pull rope when the grounding switch closes and opens cannot be effectively transmitted to the end of the plastic pull rope. It may not be possible to pull the lock tongue of the striker plate 3 connected to the end, resulting in the lock plate 3 not being able to open or lock normally, and the chain failure

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