Submersible hydraulic cutter suction dredging system

Details Submersible hydraulic cutter suction dredging system Submersible hydraulic cutter suction dredging system

E - Fixed Constructions

02

F

262/29

E02F 3/88 (2006.01)

Patent

CA 1278798

ABSTRACT A submersible hydraulic cutter suction dredging system which includes a self-propelled submersible dredger, a floating vessel for controlling the dredger and a ladder universally mounted to a ladder end of the dredger and extending outwardly therefrom. A excavating head is affixed to a distal end of the ladder for excavating material while hydraulic actuation is used for pivoting the ladder universally forwardly of the platform. A pump is coupled to the dredger for removing material excavated by the cutter head and a buoyancy tank is mounted of the ladder for providing lift thereto in order to offset the weight of the ladder in response to being filled with air. The buoyancy tank on the ladder enables the use of heavier construction material in the ladder assembly as well as a larger excavating head. A drive mechanism is used to propel the dredger over a seabed and apparatus is provided to control the orientation, lifting and sinking of the dredging.

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