Shield tunnelling machine

Details Shield tunnelling machine Shield tunnelling machine

1990-07-26

1992-06-23

Bagnell, David J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

299 58, 405141, 405143, E21D 908

Patent

active

051237083

ABSTRACT:
A shield tunnelling machine is provided. Such shield tunnelling machines include a tubular shield body; an excavating cutter assembly disposed on a front end of the body; a partition wall for defining the interior of the body into a front region and a rear region; a rotor having an outer diameter gradually increasing toward the rear; a drive mechanism for turning the rotor around a first axis and rotating the rotor around a second axis eccentric to the first axis; an annular member mounted to the rotor to be turned and rotated together with the rotor and extending around the first axis; and a discharging mechanism for discharging the excavated matter to the rear region.

REFERENCES:
patent: 4692062 (1987-09-01), Akesaka
patent: 4846606 (1989-07-01), Fukada
patent: 4886394 (1989-12-01), Akesaka

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