Dredge head and dredger-gangster with drag suction

摘要

Dredge head (100) for dredging a material (2) of a bed (3) of a body of water and transporting the material (2) to a suction tube (120), the dredge head (100) being arranged for being dragged on the bed (3) in a direction (D) of dredging by a dredge member, in which the dredge head (100) comprises: a heel section (111) that can be connected to the dredge member and which has a bed lock surface (122) arranged to follow the bed (3); and an aspiration section (110) comprising: an aspiration opening (113); a suction chamber (112); and an outlet (114) for connection with the suction tube (120), so that a subpressure can be created in the suction chamber (112) to aspirate the bed material through the suction opening (113) and from the suction chamber (112) to the outlet (114), characterized in that the suction section (110) is mounted in an adjustable manner on the heel section (111) so that an orientation of the opening can be adjusted ( 113) of aspiration with respect to the heel section (111), and the aspiration section (110) comprises a lower edge (115) forming a trailing edge of the aspiration opening, in which the lower edge is more under the bed surface of the heel section (111).