Mineral mining installation with electronic control

Details Mineral mining installation with electronic control Mineral mining installation with electronic control

1981-01-19

1983-01-11

Purser, Ernest R.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

173 7, 299 30, E21C 2900

Patent

active

043679005

ABSTRACT:
A shearer-type mineral winning machine has three-phase a.c. motors on its main body for driving cutting drums and for propelling the machine along a mineral face. The frequency of the a.c. power supplied to the motor which serves to move the machine is varied and controlled in dependence on the operation of the cutting drums. Electronic control means for monitoring the performance of the cutting drums and for controlling the frequency of the a.c. power supplied to the machine drive motor are located in a control station in a protected position in a gallery remote from the machine and power is supplied to the machine via cables and/or bus bars.

REFERENCES:
patent: 1566460 (1925-12-01), Wyman
patent: 3633081 (1972-01-01), Weber et al.
patent: 3988578 (1976-10-01), Weber

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