Shield tunnelling machine
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United States of America Patent
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-
Jun 23, 1992
Grant Date -
N/A
app pub date -
Jul 26, 1990
filing date -
Jul 28, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A shield tunnelling machine is provided. Such shield tunnelling machines include a tubular shield body; an excavating cutter assembly disposed on a front end of the body; a partition wall for defining the interior of the body into a front region and a rear region; a rotor having an outer diameter gradually increasing toward the rear; a drive mechanism for turning the rotor around a first axis and rotating the rotor around a second axis eccentric to the first axis; an annular member mounted to the rotor to be turned and rotated together with the rotor and extending around the first axis; and a discharging mechanism for discharging the excavated matter to the rear region.
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