| 摘要 |
PURPOSE:To efficiently perform a dredging work with a high accuracy by attaching a suction ladder in a vertically and horizontally swinging manner to a mobile structure provided in a movable manner back and forth along the upside of a dredger. CONSTITUTION:In a dredging work, a mobile structure K consisting of an engine room 7 and a driver's cabin 8 is moved back and forth along a sliding face 10, a trolley crane 13 is moved left and right along a rail 14, and a suction ladder 9 is swung left and right for dredging. When housing or repairing the suction ladder 9, it is hung down on the trolley crane 15 movable back and forth and then moved to the position of a mark 24. |
