Tunnel boring machine with crusher

Details Tunnel boring machine with crusher Tunnel boring machine with crusher

1997-09-09

2000-01-25

Bagnell, David

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

405141, E21D 906

Patent

active

060170956

ABSTRACT:
The present invention relates to a tunnel boring machine particularly a micro-tunnelling machine having a cutting head rotatably mounted on the end of a housing and being driven by a first motor means and a rotatable central auger for removal of soil from the cutting operation mounted in the interior of the housing, the central auger being driven by a second motor means to allow rotation of the auger independent of the rotation of the cutting head. The tunnel boring machine may also be provided with a rock crusher between the cutting head and the auger to reduce boulders encountered during the tunneling to a size to be able to be transported by the auger.

REFERENCES:
patent: 4692062 (1987-09-01), Toshio
patent: 4818026 (1989-04-01), Toshihiro
Patent Abstracts of Japan vol. 014, No. 285 (M-0987), Jun. 20, 1990 JP 02 0888886 A (Mitsubishi Heavy Ind Ltd:Others:01), Mar. 29, 1990.

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