Quick door-opening structure of mining explosion-suppression high-voltage distribution device

Abstract

A quick door-opening structure of a mining explosion-suppression high-voltage distribution device comprises an explosion-suppression box body, wherein the explosion-suppression box body is installed on a box body door frame, and an explosion-suppression door is installed at the outer end of the box body door frame. An upper front door block and a lower front door block are symmetrically and vertically installed on the explosion-suppression door frame at interval, the upper end and the lower end of the explosion-suppression box body are provided with hinge seats through third bolts respectively, and a first movable hinge is installed in the upper front door block and is installed on the hinge seat at the upper end through a third cylindrical pin. A second movable hinge is installed in the lower front door block and is installed on the hinge seat at the lower end through a third cylindrical pin. An eccentric shaft is installed between an upper door block and a lower door block, a sleeve is fixed on the eccentric shaft through a first cylindrical pin, and a handle is installed outside the sleeve through a second cylindrical pin. The quick door-opening structure further comprises a rack, wherein the rack is fastened on the box body door frame through a first bolt and a positioning pin. Evenly separated semi-circular grooves are arranged on the explosion-suppression door frame and are matched with tooth shapes of the rack. The quick door-opening structure of the mining explosion-suppression high-voltage distribution device is good in reliability.

Description

technical field

[0001] The invention relates to a quick-opening door structure, in particular to an explosion-proof electrical product controlled by a complete set of automatic equipment control system in the coal mine industry, and particularly relates to the safe operation of the explosion-proof electrical product in a coal mine. Opening structure. Background technique

[0002] In the various processes of coal mining and production in the coal mining industry, various flammable and explosive gases and various dusts may often be leaked or spilled. After such substances are mixed with air, they may become explosive mixtures. When the concentration of the mixture reaches the explosive concentration range, once an ignition source occurs, it will cause serious accidents such as explosion and fire. Therefore, the electrical equipment used in the hazardous environment of the coal mining industry must have explosion-proof performance.

[0003] Mine explosion-proof high-voltage p...

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