Movable sealing assembly for tunneling machines

Details Movable sealing assembly for tunneling machines Movable sealing assembly for tunneling machines

1987-12-07

1990-03-20

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405146, 277147, E21D 906, E21D 1110

Patent

active

049096680

ABSTRACT:
The movable tight-sealing ring is positioned between an excavator cover end and a form or casing structure. For a satisfactory movability of the excavator cover end interstice, the tight-sealing sealing ring is supported resiliently by adjustable supporting units freely movable relative to the excavator cover end and the casing or form structure. On one side the tight-sealing sealing ring is provided with a plurality of impressed material feed openings and on the other side with an elastic outer sealing member contactable on the inside of the excavator cover end as well as an elastic inner sealing member pressable against the outside of the form or casing structure.

REFERENCES:
patent: 3410098 (1968-12-01), Winberg
patent: 3561223 (1971-02-01), Tabor
patent: 3979920 (1976-09-01), Burgess et al.
patent: 4645378 (1987-02-01), Hentschel

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