Control arrangement for adjusting the position of a mineral winning machine in a mineral mining installation
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United States of America Patent
Stats
-
Aug 16, 1994
Grant Date -
N/A
app pub date -
Jan 15, 1993
filing date -
Jan 16, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mineral mining installation has a plough guided for movement along a scraper-chain conveyor. Roof supports are connected to the conveyor with the aid of shifting mechanisms which employ boom-type guide linkages designed to co-operate with a compact controller to adjust the tilt of the conveyor and the cutting horizon of the plough. The controller employs a plate-like guide block guided for up and down motion at the goaf side of the conveyor. An hydraulic piston and cylinder unit is disposed alongside the goal side of the conveyor and pivots a cranked lever to raise or lower the guide block. The guide block is coupled to a headpiece of an associated one of the boom linkages so that the motion of the guide block is transferred to the headpiece.
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Cited Art Landscape
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