Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
Patent
1984-11-19
1987-06-23
Corbin, David H.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Boring
405141, E21D 906
Patent
active
046749136
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
TECHNICAL FIELD
This invention relates to an apparatus for construction of a continuous article which has at least one bore and is elongated to a large length with a uniform cross-sectional configuration. The apparatus may have at least one rotary cutter for excavating the earth and may form the continuous article underground. The apparatus may not have a rotary cutter and may form the continuous article aboveground.
BACKGROUND ART
Hitherto, various such apparatuses have been suggested. For example, machines for forming a continuous seamless concrete background pipe are known from U.S. Pat. Nos. 3,785,759 and 3,877,860. Tunneling machines which both excavate and form a concrete tunnel wall are also known from U.S. Pat. Nos. 3,350,889 and 3,561,223, for example. Sometimes, the tunneling machine of the prior art discharges spoil including a vast quantity of water, therefore it is very difficult to find the place for easily discharging the spoil mixed with the water. If the water can be separated from the spoil, it is very easy to discharge the water anywhere without problems. The aboveground concrete pipe and the tunnel wall constructed using the machines of prior art are made of concrete, therefore the strengths thereof are low.
DISCLOSURE OF THE INVENTION
One object of the present invention is to provide an apparatus for excavating the earth and constructing an underground continuous article having at least one bore which enables separation of water from the spoil and separate discharge of the water and the other spoil, respectively.
Another object of the present invention is to provide an apparatus which is able to construct a strong continuous article.
The present invention provides an apparatus for underground construction of a continuous article having at least one bore which has at least one rotary cutter and a spoil discharge device. The spoil discharge device includes a suction pipe disposed so as to open to a space for containing the spoil at the front end thereof and rotatably supported around the axis thereof and having a perforate portion at the front part thereof, driving means for rapidly rotating the suction pipe, a screw conveyor disposed in the suction pipe, driving means for slowly rotating the screw conveyor, means for discharging the water ejected from the perforate portion, and means for discharging the spoil sent by the screw conveyor.
The present invention also provides an apparatus for construction of a continuous article having at least one bore which has at least one electric heater for heating material passing a space and becoming the continuous article.
Various other objects, features, and attendant advantages of the present invention will be more fully appreciated as the same becomes better understood from the following detailed description when considered in connection with the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a perspective view partially showing a continuous article having bores constructed by one embodiment of the present invention;
FIG. 2 is a front view of the embodiment;
FIG. 3 is a sectional view taken along the line 3--3 of FIG. 2;
FIG. 4 is a sectional view taken along the line 4--4 of FIG. 3;
FIG. 5 is a sectional view taken along the line 5--5 of FIG. 3;
FIG. 6 is a sectional view partially showing another embodiment of the present invention which is a variant of the embodiment shown in FIGS. 2-5;
FIG. 7 is a front view of another embodiment of the present invention;
FIG. 8 is a sectional view taken along the line 8--8 of FIG. 7 showing a condition of use;
FIG. 9 is a sectional view taken along the line 9--9 of FIG. 7; and
FIG. 10 is a sectional view taken along the line 10--10 of FIG. 8.
BEST MODE OF CARRYING OUT THE INVENTION
Referring now to FIG. 1, there is shown a continuous article 98 which has a plurality of bores 99 constructed by an embodiment of the present invention. In FIGS. 2-5, an of the apparatus embodiment for construction of the continuous article is shown. The apparatus has a frame 10 which ha
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patent: 4001358 (1977-01-01), McNeill et al.
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Yano Shintaro "Shield Koho" Showa 53 nen (1978), Hakko, Kashima Shuppan-kai (Tokyo) P315115-P31613.
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