CUTTING FOR DREDGING OF GROUND, cutter suction dredger WITH SUCH CUTTING AND USE OF THE CUTTING FOR DREDGING OF GROUND.

摘要

The invention relates to a cutter head for dredging of ground under water, which cutter head is adapted for rotation about an axis to be secured to the ladder of a suction dredger and thus to be moved through the ground in a lateral swinging movement, which cutter head comprises a base ring, one extending in the direction of the center line at a distance from the base ring standing hub, and a plurality of extending from the base ring to the hub extending support arms, in which is located a through-opening between the support arms, and wherein the cutting tools, at least at their free end are axisymmetrical. The invented cutting head has an increased efficiency, in particular for soils with a UCS ("Unconfined Compressive Strength) of at least 50 MPa.