Mining machine having vibration sensor
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United States of America Patent
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-
Apr 7, 1987
Grant Date -
N/A
app pub date -
Jul 31, 1985
filing date -
Jul 31, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mining machine having means for sensing property variations of the materials associated with a seam of a mine. The machine comprises a member (4) which rotates about an axis A. The rotatable member mounts at least one cutter 6 spaced from the axis for cutting material from the seam. A rod (10) carried by the rotatable member is held in releasable engagement with the cutter. The rod extends to the axis of the rotatable member to conduct to the axis, strain waves which are induced by variations in cutter vibration as the cutter encounters property variations of the materials associated with the seam. A transducer (24,54) is located at the axis of the rotatable member in communication with the rod to convert the strain waves in the rod to electric signals which may be recorded or visually displayed.
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