Direction correcting device for shield tunnelling machine

Details Direction correcting device for shield tunnelling machine Direction correcting device for shield tunnelling machine

B - Operations, Transporting

21

D

262/54

B21D 9/08 (2006.01) E21D 9/06 (2006.01)

Patent

CA 2021203

A direction correcting device for a shield tunnelling machine having a shield body provided with a head portion and a tail portion following the head portion is adapted to correct the direction of the head portion relative to the tail portion. The device comprises three jacks respectively having two connecting portions relatively displaced in the axial direction of the tail portion, and a connecting body for interconnecting the head portion and the tail portion so as to permit the head portion and the tail portion to swing, while preventing the head portion and the tail portion from relatively displacing in the axial direction of the tail portion. Each of the jacks is connected at one connecting portion to the head portion, while being connected at the other connecting portion to the tail portion, and the jacks and the connecting body are disposed around the axis of the tail portion at angular intervals.

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