Longwall mining machine for the mining of thick mineral seams

Details Longwall mining machine for the mining of thick mineral seams Longwall mining machine for the mining of thick mineral seams

1988-10-24

1989-11-28

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Sidewall-working

299 53, E21B 2510

Patent

active

048833231

ABSTRACT:
A drum cutter mining machine translatable along a longwall conveyor includes an auxiliary cutting drum for breaking up pieces of mineral carried by the longwall conveyor system. The auxiliary cutting drum is supported by a jib and an arm extension affixed in a fixed relationship with a support arm. The auxiliary cutting drum is positioned by the same actuator which pivotally positions the drum-cutter cutting drum at a desired cutting height at the mine roof and other times at the floor. Positioning of the cutting drum at the desired cutting height automatically positioned the auxiliary cutting drum.

REFERENCES:
patent: 3907367 (1975-09-01), Nokajima
patent: 4465319 (1984-08-01), Brownlie

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