| 摘要 |
In a vessel-mounted dredging device in which material freed by revolving cutters is pumped through a suction mouth and discharge pipe to a place remote from the cutters, a submersible dredge pump is mounted on a platform which supports cutter discs spaced from one another and positioned to deliver material to the suction side of the pump. The platform is mounted on a mast which is so constructed and arranged as to be movable vertically with respect to a carriage which is in turn vertically movable relative to the vessel. The platform is preferably hinged to the end of the mast, to permit the platform to swing to an angle to the horizontal, selectively.
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