Tunnel excavation apparatus

Details Tunnel excavation apparatus Tunnel excavation apparatus

1992-10-08

1995-01-17

Reese, Randolph A.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405138, 405146, 4051501, E21D 910, E21D 1110

Patent

active

053821149

ABSTRACT:
A tunnel excavation apparatus comprises a frame mounted on crawler tracks and provided with pistons comprising stabilizer feet, a power unit, a working unit, and auxiliary movement and positioning services. The working unit is arranged on an arm mounted on one end of telescopic uprights, which are hinged at their other ends to the frame about an axis substantially parallel to the longitudinal direction of the machine, and consists of a rectilinear rigid structure, at the perimeter of which excavation tools are arranged on a chain, to circulate along the side and front of the structure. The tools are hinged to a caisson open on the side opposite the hinged side and provided with apparatus for conveying concrete into its interior.

REFERENCES:
patent: 2841297 (1958-07-01), Washabaugh
patent: 2895299 (1959-07-01), Washabaugh
patent: 3597929 (1971-08-01), Bodine
patent: 4666336 (1987-05-01), Murakami et al.
patent: 4808030 (1989-02-01), Takegawa
patent: 4917538 (1990-04-01), Koga et al.
patent: 5104260 (1992-04-01), Trevisani
patent: 5152638 (1992-10-01), Trevisani

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