Apparatus to deliver high pressure liquid from nozzles on a shearer drum for a mining machine
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United States of America Patent
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Mar 29, 1988
Grant Date -
N/A
app pub date -
Sep 19, 1985
filing date -
Sep 19, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A shearer drum for a mining machine used in underground mining is provided with cutter picks and nozzles on the periphery of the drum. The nozzles are subdivided into groups which extend substantially parallel to the rotational axis of the drum and each group of nozzles can, when disposed opposite the mine face, be connected by a controllable valve associated with the group to a line for supplying high-pressure liquid. An independent control valve and at least one cutter pick are associated with each nozzle group. The cutter pick is resiliently mounted and cutting pressure triggered by movement of the cutter pick into a mine face actuates the control valve and connects the nozzles to the high-press line.
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