Patent ID: 8960808
Filing Date: 2015-02-24
Classification: E02F,E21C

Abstract:
1. An underwater miner cutter head attached to an underwater miner disposed on a seabed and configured to excavate the seabed, the cutter head comprising: cylindrical cutter drums disposed on respective sides defining a regular polygon in plan view, having bits provided on outer circumferential surfaces thereof, and configured to rotate around corresponding first rotational axes by first driving sources; an intake disposed at a center part of the regular polygon and configured to receive muck excavated with the bits, wherein rotating directions of the cutter drums are set such that the bits move toward the intake; and a plate-like turning base to which the cutter drums are attached via a cutter support arm and which is rotated by a second driving source around a second rotational axis passing through the center of the regular polygon.