Cutting dredger
AssigneeIHC Holland IE B.V.
InventorsMeindert Zwanenburg, Stephan David Arjan Hannot, Vincent Leonard Toet
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Abstract
A method for operating a cutting dredger in open water, in particular to control a ground reaction force during dredging operations, the dredger including; a floating body, an elongate cutter ladder having a cutting head at its lowerable free end for dredging, which cutter ladder is hingeably coupled to the floating body and hingeable between an upwards position and a cutting position wherein the cutting head engages matter to be cut away at the floor of a body of water.
Claims22
A method for operating a cutting dredger in open water, the dredger comprising
- a floating body,
- an elongate cutter ladder comprising a lower free end with a cutting head for dredging, and a hinge point, the elongate cutter ladder being hingeably coupled to the floating body at the hinge point and hingeable between an upwards position and a cutting position in which the cutting head engages matter to be cut away at a floor of a body of water, and
- a driving device comprising an onboard hydraulic cylinder directly coupled with the elongate cutter ladder at a positon near the hinge point for hinging the cutter ladder between the upwards position and the cutting position,
- the method comprising the step of
- operating the driving device, when the elongate cutter ladder is in the cutting position to urge the elongate cutter ladder down in a controlled manner for controlling a ground reaction force F between the elongate cutter ladder and the bottom of the body of water.
A cutting dredger comprising:
- a floating body,
- an elongate cutter ladder comprising a lower free end with a cutting head for dredging and a hinge point at which the elongate cutter ladder is hingeably coupled to the floating and hingeable between an upwards position and a cutting position wherein the cutting head engages matter to be cut away at a floor of a body of water, and
- a driving device comprising an onboard hydraulic cylinder directly coupled with the elongate cutter ladder at a positon near the hinge point for hinging the elongate cutter ladder between the upwards position and the cutting position, and for urging the elongate cutter ladder down in a controlled manner for controlling a ground reaction force F between the elongate cutter ladder and the floor of the body of water.
Dependencies are inferred from the claim text.