To provide a cutter head system for easily crushing and dredging not only soft muddy soil and sandy soil but also hard clayey sludge, and efficiently sucking up mud on a dredger by maintaining the high mud content.
This dredger cutter head system has two rotary cutters 1 arranged in parallel, a casing 5 for covering an upper surface of the rotary cutters and a common suction port 8 arranged between the two rotary cutters. The rotary cutters 1 are formed by implanting a hatchet blade 3 in the outer periphery of a rotary shaft 2 so that the blade turns outside. The hatchet blade is rotated in the downward direction from above on the outside of the respective rotary shafts, and the suction port 8 is arranged in the vicinity of a bottom surface of the rotary cutters. A dredging object taken in by either rotary cutter 1 is also selectively sucked, and is sent into a mud absorbing pipe 7.
OGUSHI SUEYUKI
OKUYAMA TAKAHIRO
DOI TSUTOMU
KADOTA ATSUSHI
IKEGAMI HIDEFUMI
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