Excavator and a method for constructing an underground continuous wall
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United States of America Patent
Stats
-
Dec 20, 2011
Grant Date -
May 19, 2011
app pub date -
Oct 12, 2010
filing date -
Jul 30, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A number of front working, trench filling face-compressing, inclinedly disposed sliders are arranged alternately with cutter bits on an endless chain of a trench-forming endless chain cutter on a transporting chassis, and driven with the chain by a drive means so that backward oriented, inclined facet portions of the sliders compress a filling in the trench toward and on a front working face of the wall being formed. An elongate, filling face-compressing shield is adapted to be extended down into the trench and supported with its underground portion on the underground portion of a guide post of the cutter or on the trench bottom for forward and backward oscillation by a drive means to compress the filling face adjacent to the shield. The compacted filling is in these ways being formed by horizontal pressure.
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