Cutter head for dredging ground cutter suction dredger provided with such a cutter head and use of the cutter head for dredging ground

摘要

The invention relates to a cutter head (10) for dredging a ground below a water surface, said cutter head being rotatably attached about a central axis with respect to a ladder (2) of a cutter suction dredger (1) The cutter head being adapted to move along with the ground, the cutter head comprising a base ring (13), a hub (14) located away from the base ring in the direction of the central axis, and a plurality of support arms The passage openings 16 are located between the support arms and the cutting tools 20 are at least asymmetric in their free outer ends. The inventive cutter head has an increased efficiency, especially for lands having a uniaxial compressive strength (UCS) of at least 50 MPa.;