Vibratory mechanism for a compaction roller
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United States of America Patent
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-
May 22, 1990
Issued Date -
N/A
app pub date -
Apr 24, 1989
filing date -
Jun 24, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compaction apparatus including a pair of frames. A compaction drum is mounted for rotation on a first of the frames and resilient isolation mounts interconnect the two frames. A vibratory unit is mounted on the first frme and includes pair of eccentric weights arranged so that vertical vibratory forces generated by the weights are added, while fore-and-aft vibratory forces are cancelled. The isolation mounts are at different distances on opposite sides of a vertical plane passing through the axis of the drum, so that the vertical vibratory forces acting through the two isolation mounts produce unequal moments tending to rotate the drum and subject the soil to a shear-type action.
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