Excavator drive mechanism for tunnel boring machine

Details Excavator drive mechanism for tunnel boring machine Excavator drive mechanism for tunnel boring machine

E - Fixed Constructions

21

C

262/46.5

E21C 27/30 (2006.01) E02F 3/30 (2006.01) E21D 9/08 (2006.01)

Patent

CA 1142188

ABSTRACT OF THE DISCLOSURE In a tunnelling machine including a hollow shield, a non-rotatable outer housing mounted in the shield for longitudinal movement, an inner housing rotatably mounted within the outer housing, an excavator including a boom and bucket pivotally mounted on the forward end of the inner housing, and a boom cylinder having a forward portion pivotally engaged with the boom and a rear portion mounted at the rearward portion of the inner housing.

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