| 主权项 |
1. A drag head for dredging material from a bed of a body of water and transporting the material to a suction tube, the drag head comprising:
a heel section connectable to a drag member such that the heel section and the drag member are fixed relative to each other, the heel section having a bed engaging surface configured to follow the bed so that the drag head is configured to be dragged over the bed in a dragging direction by a drag member; and a suction section comprising:
a suction opening,a suction chamber,an outlet for connection to the suction tube such that an underpressure can be created in the suction chamber to suck up the material from the bed through the suction opening and the suction chamber to the outlet, anda lower edge forming a trailing edge of the suction opening and the last point of contact between the drag head and the bed, the lower edge being lower than the bed engaging surface of the heel section,the suction section being adjustably mounted to the heel section at a hinge point such that the entire suction section is configured to rotate relative to the heel section and the drag member so that an orientation of the suction opening is adjusted relative to the heel section and the drag member, and such that a dragging force from the drag member is applied to the heel section, the dragging force then being applied to the suction section via the heel section. |
