Tunnel-excavating machine
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United States of America Patent
Stats
-
Nov 4, 1980
Grant Date -
N/A
app pub date -
Dec 2, 1977
filing date -
Mar 12, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tunnel-excavating machine in which a chassis carrying a cutting drum is displaceable toward the face of a subterranean structure in which a tunnel is to be formed, the chassis being provided independently from a roof-support unit which is connected to the chassis only by at least one fluid-pressure cylinder arrangement. The cylinder arrangement is connected to the unit and/or the chassis by vibration damping means so that the cylinder arrangement can advance the chassis relative to the roof support unit or vice versa and vibration transmission from the chassis to the roof support unit is damped.
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Cited Art Landscape
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