Apparatus for controlling the steering mechanism of a mining mac

Details Apparatus for controlling the steering mechanism of a mining mac Apparatus for controlling the steering mechanism of a mining mac

1976-11-30

1978-10-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

E21C 3508

Patent

active

041205340

ABSTRACT:
Apparatus for controlling the steering mechanism of a mineral mining machine having a nucleonic sensor adapted to sense the cutting horizon of the machine's cutter head relative to a boundary of the mineral seam, the apparatus providing an electronic cavity detector which freezes the machine's steering mechanism according to two operational modes when a cavity or crack/undulation respectively is detected. Thus, the machine is not steered in accordance with an erroneous sensor signal derived when the sensor is adjacent to the cavity or crack/undulation.

REFERENCES:
patent: 3351385 (1967-11-01), Dowell
patent: 3817578 (1974-06-01), Wilson

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