Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
Patent
1985-01-10
1987-02-03
Novosad, Stephen J.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Boring
405146, 299 33, E21D 906, E21D 908
Patent
active
046406468
ABSTRACT:
A tunneling machine with a leading ring, a follower ring, an overlapping joint connection between the leading ring and the follower ring, a pressure ring, advancing piston/cylinder assemblies, and a roll correction device. The advancing piston/cylinder assemblies are distributed about the shield circumference, and they are connected on the one hand by the way of linkages to the pressure ring, and on the other hand they are supported at the leading or shield ring. The roll correction device has a roll correction ring which is arranged in the leading ring, and the roll correction ring can rotate with respect to the leading shield. The roll correction ring is also supported by a thrust-absorbing bearing. The advancing piston/cylinder assemblies are movably joined at the roll correction ring, and are indirectly supported at the leading ring. The adjusting piston/cylinder assemblies are primarily disposed in the direction of a line which is similar to a secant, and between the roll correction ring and the thrust-absorbing bearing.
REFERENCES:
patent: 3967463 (1976-07-01), Grandori
patent: 4432665 (1984-02-01), Stuckmann et al.
patent: 4548443 (1985-10-01), Turner
Dubno Herbert
Goodwin Michael A.
Hochtief Aktiengesellschaft vorm Gebr Helfmann
Novosad Stephen J.
Ross Karl F.
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