CUTTER HEAD FOR MUDDY SOIL PRESSURE TYPE UNDERGROUND BORING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a cutter head for a high density slurry underground boring machine of slurry stirring-mixing capacity without needing an independent driving device for driving a stirring member. SOLUTION: In the case of constituting this cutter head for the high density slurry underground boring machine, a rotation body 5-1 is rotatably fitted to a stay 6 by a rotating shaft 5-3. The rotation body 5-1 is thereby constituted to be rotatable around an axis radially extending from the rotational center of the cutter head, and the rotation body 5-1 is protrusively provided with a large number of protrusions 5-2. When the cutter head is rotated, some of a large number of protrusions 5-2 penetrate into the natural ground, and the rotation body 5-1 is rotated around the rotating shaft 5-3 by the reaction of the natural ground resulted form the penetration. The peripheral excavated sediment and a mud producing material are stirred and mixed by a large number of protrusions 5-2 moved following the rotation of the rotation body 5-1.