Tunnel excavation apparatus and tunnel excavation method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 26, 2014
Grant Date -
Mar 28, 2013
app pub date -
Nov 21, 2012
filing date -
May 26, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is a tunnel excavating apparatus for excavating tunnels in earth. This tunnel excavating apparatus comprises shell bodies, an excavating mechanism disposed on front of the excavating portion shell body, and a propelling mechanism disposed within the shell body. The shell bodies include an excavating portion shell body, a front shell body, and a rear shell body disposed in order from the leading end side in the advancing direction of excavation. The propelling mechanism comprises a projection mechanism and an extension mechanism. The projection mechanism includes front circumferential jacks in the front shell body and rear circumferential jacks in the rear shell body, both of which are capable of extension and contraction in the outer circumferential direction. The extension mechanism includes front axial jacks interposed between the excavating portion shell body and the front shell body, and rear axial jacks interposed between the front shell body and the rear shell body, both of which are capable of extension and contraction in the direction of advancing excavation.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully