Title:
MULTI-SHAFT EXCAVATING DEVICE
Document Type and Number:
WIPO Patent Application WO/1995/011349
Kind Code:
A1
Abstract:
The present invention provides multi-shaft excavating device for forming a cast in situ diaphragm wall that is capable of forming such a wall of good linearity and is highly reliable. According to the invention, a guide shaft is provided on one or both sides of a plurality of excavating shafts which are linearly arranged and in which a jet nozzle is provided on said guide shaft. A multi-shaft excavating device with three mixing shafts for forming a cast in situ diaphragm wall comprising a first gear adapted to be rotated by the central mixing shaft, a pair of second gears in mesh engagement with said first gear, a first bevel gear that is integral with said first gear, a second bevel gear in mesh engagement with said first bevel gear and fixedly provided on a rotating shaft perpendicular to a straight line connecting the centers of said mixing shafts and cutters provided at the ends of said rotating shaft, all of which are provided in a housing maintaining an interval between said mixing shafts. With the multi-shaft excavating device of the present invention, it is possible to form such a wall of good linearity. Moreover, with the device of the present invention, since the ground is excavated in such a manner as to form a rectangular cross section by a jet stream, it is possible to improve reliability over a conventional excavating blade driven by a chain. Furthermore, with the device of the present invention, it is possible to form such a wall unit of rectangular shape, and since the reaction of the cutters is offset, good balance is obtained, and it is possible to obtain a device of high reliability due to gear driving.
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Inventors:
SHIBASAKI MITSUHIRO (JP)
KUBO HIROAKI (JP)
MORI AKIRA (JP)
HATAKEDA HACHIRO (JP)
TAKAHASHI TSUTAO (JP)
NAKAMURA TETSUO (JP)
KUBO HIROAKI (JP)
MORI AKIRA (JP)
HATAKEDA HACHIRO (JP)
TAKAHASHI TSUTAO (JP)
NAKAMURA TETSUO (JP)
Application Number:
PCT/JP1993/001529
Publication Date:
April 27, 1995
Filing Date:
October 22, 1993
Export Citation:
Assignee:
CHEMICAL GROUT CO (JP)
SHIBASAKI MITSUHIRO (JP)
KUBO HIROAKI (JP)
MORI AKIRA (JP)
HATAKEDA HACHIRO (JP)
TAKAHASHI TSUTAO (JP)
NAKAMURA TETSUO (JP)
SHIBASAKI MITSUHIRO (JP)
KUBO HIROAKI (JP)
MORI AKIRA (JP)
HATAKEDA HACHIRO (JP)
TAKAHASHI TSUTAO (JP)
NAKAMURA TETSUO (JP)
International Classes:
E02D5/18; E02D17/13; E21B7/00; (IPC1-7): E02D5/18; E02D17/13
Foreign References:
| JPS5953999B2 | 1984-12-27 | |||
| JPH05179649A | 1993-07-20 | |||
| JPH0554637U | 1993-07-23 | |||
| JPH0448891B2 | 1992-08-10 |
Other References:
See also references of EP 0678628A4
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