Shield advancing machine

Details Shield advancing machine Shield advancing machine

1986-10-01

1989-02-21

Yost, Frank T.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

299 60, F21D 908

Patent

active

048059633

ABSTRACT:
A shield advancing machine, comprising cutting tools (15) rotatably supported on cantilever arms (13, 14) being rotatable around an axis approximately extending in advancing direction and being swivellable in transverse direction to this axis, has a carrier (4) which is guided and supported in axial direction of the shield (1). A rotation drive (22, 33) for a rest (9) of the cantilever arms (13, 14) is provided on the carrier (4), and the cantilever arms (13, 14) as well as their swivel drive (16, 17) are linked to the rest (9).

REFERENCES:
patent: 4136910 (1979-01-01), Plummer
patent: 4199193 (1980-04-01), Damron et al.
patent: 4248481 (1981-02-01), Stoltefuss
patent: 4688854 (1987-08-01), Pfeiffer

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