Shearing system for longwall mining
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United States of America Patent
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Nov 24, 2020
Grant Date -
N/A
app pub date -
Jul 23, 2019
filing date -
Aug 7, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A shearing system includes a pan line having an end stop, a gate end, and a set of consecutively arranged pans extending from the gate end and having one or more pans disposed beyond the end stop. A shearer is stoppable at the end stop, includes a shearer arm, and is positioned on the one or more pans when the shearer arm is disposed between the end stop and the gate end. A first sensor detects an orientation of the shearer, while second sensors detect an orientation of the set of consecutively arranged pans. A control system determines a profile of the pan line between the end stop and the gate end and controls a movement of the shearer arm based on the profile of the pan line when the shearer arm is disposed between the end stop and the gate end.
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