Driving arrangement for longwall mining machines

Details Driving arrangement for longwall mining machines Driving arrangement for longwall mining machines

1983-01-10

1984-06-12

Pate, III, William F.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Sidewall-working

192 12D, 192 0076, 192 84R, 192 84E, E21C 2922

Patent

active

044537743

ABSTRACT:
The invention is particularly adapted for use with a longwall mining machine of the type having a rack extending along a track for the mining machine, a gear wheel on the machine engageable with the rack for moving the machine along a track, at least two shearer drums carried by the machine, at least one driving motor on the machine, and gear train means connecting the driving motor to the shearer drums to rotate the same. Two inductive clutches having a common armature are connected through reduction gearing to the aforesaid driving gear wheel; while separate rotors connect the respective clutches to the gear train such that one rotor will rotate in a direction opposite to the other. A magnetically-actuated, spring-biased friction brake is disposed between the two inductive clutches for braking the clutches when the machine is at rest. The invention provides a self-contained driving unit for both the shearer drums and the driving gear wheel without materially increasing the length of the machine in order that it can be used in thin mineral seams.

REFERENCES:
patent: 3363732 (1968-01-01), Nakamura et al.
patent: 3394278 (1968-07-01), Schetinin
patent: 4097091 (1978-07-01), Knorr
patent: 4381048 (1983-04-01), Haverkamp et al.

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