Control system for longwall shearer

Details Control system for longwall shearer Control system for longwall shearer

1991-10-04

1993-07-20

Bagnell, David J.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 42, E21C 3512, E21C 3524

Patent

active

052287513

ABSTRACT:
Apparatus for measuring the degrees of roll of the body of a longwall shearing machine and providing signals proportional to the roll angle which are used to control drum cutting positions for controlling roof and floor horizons of a coal tunnel.

REFERENCES:
patent: 4371209 (1983-02-01), Alford et al.
patent: 4634186 (1987-01-01), Pease
patent: 4643482 (1987-02-01), Wolfenden

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