| 摘要 |
<p>PURPOSE:To efficiently perform underwater work for an overhung structure, by providing main propellers for an underwater work surface in its forced attaching direction and the second propellers for movement in vertical and lateral directions while a float for tilting a main unit, when it is arranged in the water, for the work surface. CONSTITUTION:Wheels 13a-d, which run being forced to be attached to a work surface in the water, and a blasting device 19 are mounted to a main unit frame 11, and it provides main propellers 14, 15 for the underwater work surface in its forced attaching direction, propeller 16 for movement in the vertical direction and a propeller 17 for movement in the lateral direction. And when the main unit frame 11 is arranged in the water, the main unit frame 11, which arranges in its upper a float 11b, is tilted for the underwater work surface by utilizing buoyancy of the frame 11 and each propeller 14-17. By this constitution, the main unit frame can be easily positioned approaching the overhung work surface of a ship body bottom plate or the like, and positioning work or the like in the water, utilizing a diver or the like in the past, can be omitted.</p> |
