Drum cutter-loader for underground mining
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United States of America Patent
Stats
-
Jul 31, 1990
Grant Date -
N/A
app pub date -
Jun 16, 1989
filing date -
Jul 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to overcome problems associated with drum cutter-loader mining machines having a cutting drum mounted at one or both ends of the machine on pivotable support arms and further having cutting drum drive motors positioned outside of the machine body, there is provided a unique support arm system for adjusting the height of the cutting drums and their associated drive motors which neither reduces the debris pass-through cross-section of the machine bridge nor impairs the height adjustability of the cutting drums. The support arm system for each cutting drum and drive motor includes a first support arm section pivotally mounted at one end thereof to an end of the machine body and a second support arm section pivotally mounted to an opposite end of the first arm section. The second support arm section carries at least the cutting drum drive motor at one end thereof and the drive motor of each support arm is positionable inside the coal seam winning track.
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