Mechanical latch linkage device in heading machine explosive-proof electric cabinet dual-quick-opening door

Abstract

The invention provides a mechanical latch linkage device in a heading machine explosive-proof electric cabinet dual-quick-opening door. The mechanical latch linkage device is mainly characterized in that a disconnecting switch handle and a cam are respectively and fixedly connected through a rotation shaft, the cam is connected with a transmission rod through a pin shaft, the transmission rod is fixed by two fixing rings and can rotate, two retaining blocks, and two locking hoops and two retaining hoops are respectively fixed on the transmission rod. Two locking blocks are respectively fixed on a small shaft on a box plate and can rotate, and inward tensile force is formed by the tensile force of a spring. Outward force is formed on a button on the upper portion of the disconnecting switch handle under effects of a press-button spring, and the front end of the disconnecting switch handle abuts against a travel switch to control a travel switch to open and close. Retaining blocks of two doors are respectively fixed on the quick-opening door. The mechanical latch linkage device has the advantages of achieving automatic locking functions, simultaneously controlling the two doors, meeting conditions of outage when the doors are opened, and achieving an interlocking function of locking by opening the doors after the outage. The explosive-proof electric cabinet dual-quick-opening door can be conveniently opened and is safe, reliable and convenient to maintain, check, preserve and safeguard.

Description

technical field [0001] The invention relates to a roadheader, in particular to a mechanical locking linkage device in double quick opening doors of a flameproof electric control box of the roadheader. Background technique [0002] Currently on the market, the internal mechanical locking device of the quick-opening door of the explosion-proof electric control box for mine roadheaders is controlled by a single door, and its structure is relatively complicated and inconvenient to use. The explosion-proof electric control box for the roadheader with double doors is bolted and fixed, and the connecting bolts need to be unscrewed to open the door, which is time-consuming and labor-intensive, which is inconvenient and unsafe. Contents of the invention [0003] The purpose of the present invention is to provide a mechanical locking linkage device in the double quick opening door of the explosion-proof electric control box of the roadheader in view of the shortcomings in the above-...

AI Technical Summary

Problems solved by technology

[0002] At present, the internal mechanical locking device of the quick-opening door of the explosion-proof electric control box for mine roadheaders on the market is controlled by a single door, and its structure is relatively complicated and inconvenient to use.

The explosion-proof electric control box for the double-door roadheader is bolted and fixed. To open the door, you need to unscrew the connecting bolts one by one, which is time-consuming and labor-intensive, which is inconvenient and unsafe.

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