Double ranging drum cutter having load controller

Details Double ranging drum cutter having load controller Double ranging drum cutter having load controller

1986-09-24

1988-05-03

Leppink, James A.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 42, 173 6, 173 11, E21C 2702

Patent

active

047415770

ABSTRACT:
According to the applicant's invention a load detector is used, in which a load sensor and a vibration sensor are combined using an AND gate. A load signal from the load detector is used for the feedback control of the cutter drum height and double ranging drum cutter running speed, so that a person who is not skilled can operate the double ranging drum cutter while preventing overload acting on the cutter drum.

REFERENCES:
patent: 3323839 (1967-06-01), Addison et al.
patent: 4269448 (1981-05-01), Wilson
patent: 4470635 (1984-09-01), Paarat et al.
patent: 4591209 (1986-05-01), Droscher et al.

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