DEVICE FOR ELIMINATION OF HANG-UPS IN COAL DRAWPOINT CROSSCUTS AND ORE CHUTES

摘要

FIELD: equipment for mining of steep-dipping coal seams, in particular, devices for elimination of hang-ups in coal drawpoint crosscuts and ore chutes. SUBSTANCE: device has guide pipe, propellant charge and mechanism for fastening the pipe whose ends carry two bursting diaphragms and two pistons interconnected by destructible rigid tie. Propellant charge is located between pistons. Member to be thrown is made with flat heads part and profiled bottom and located in pipe under part. Member to be thrown rests with its bottom on bursting diaphragm. Space between diaphragms and pistons is filled with liquid, for instance, water. EFFECT: higher safety of work. 2 cl, 1 dwg