Shield control device for carrying out the longwall function of a longwall unit in the longwall face working in a mine
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United States of America Patent
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Oct 29, 2013
Grant Date -
Nov 4, 2010
app pub date -
May 9, 2008
filing date -
May 12, 2007
priority date (Note) -
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Abstract
The shield control device of a longwall shield for carrying out the longwall functions of the longwall shield in the longwall face working in a mine is associated with a distributing device upstream of a group of functional elements. Each of the functional elements of the longwall shield is associated with an exclusive address code word, on the call of which the internal connection between the shield control device and the functional elements depends. The distributing device is arranged in close proximity to the functional elements. The functional elements are valves or sensors.
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