Extension piece for a cutting arm of a cutter-suction dredger and method for loosening the bed of a body of water

摘要

Extension piece (10) for a raisable and lowerable cutting arm (3) of a cutter-suction dredger (1) for cutting material loose from the bed (7) of a body of water, whereby this cutting arm (3) comprises a driveshaft (20) for a cutting head (12), whereby the extension piece (10) has a first end (11) for mounting the cutting head (12) and a second end (16) for coupling to a free end (18) of the cutting arm(3), whereby the extension piece (10) is provided with a driveshaft (20) for the cutting head (12) that is arranged to be coupled to the driveshaft (20) in the cutting arm (3).