Machine for making underground galleries

Details Machine for making underground galleries Machine for making underground galleries

1983-06-01

1985-04-02

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

405143, 175 61, 403377, E21D 908

Patent

active

045083908

ABSTRACT:
The invention concerns an improved machine for making underground galleries. This machine comprises a shield consisting of two mutually movable parts, a forward knife casing 1 supporting on its inside a digging device 3 and a rear assembly skirt 2 acting as a guide means for a thrust ring 10. The knife casing and the assembly skirt are mutually connected by a slack fastening system allowing them to pivot with respect to each other in such a manner that their longitudinal axes form an adjustable angle.
The machine of the invention applies to making underground galleries provided with coverings bracing the earth; it makes possible marked curves without the requirement of out-of-path earthworks.

REFERENCES:
patent: 3556599 (1971-01-01), Fikse
patent: 3919851 (1975-11-01), Plourde
patent: 4027903 (1977-06-01), Hannover
patent: 4203626 (1980-05-01), Hamburger
patent: 4224004 (1980-09-01), Heitkamp
patent: 4436448 (1984-03-01), Magnus et al.

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