Method and apparatus for controlling attitude of shield excavato

Details Method and apparatus for controlling attitude of shield excavato Method and apparatus for controlling attitude of shield excavato

1990-07-26

1991-05-21

Corbin, David H.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405141, E02D 906

Patent

active

050170457

ABSTRACT:
Directional control of a shield excavator is automatically carried out merely by inputting a direction of rotational moment to which the excavator is directed and a magnitude of the moment.

REFERENCES:
patent: 4412758 (1983-11-01), Heitkamp et al.
patent: 4420188 (1983-12-01), Robbins et al.
patent: 4432665 (1984-02-01), Stuckmann et al.

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