| 摘要 |
PURPOSE:To raise the efficiency of charging operation of rubbles by a method in which a rubble-charging port with freely adjustable opening is provided in the lower end of a casing for charging rubbles, and the casing is moved while keeping the opening in an arch-action generating condition. CONSTITUTION:A rubble charging port 9 consisting of a movable partition plate 6 to be opened or closed by a cylinder 5 and a fixed plate 4 to be fixed inside a casing 2 is provided in the lower end of the casing 2 for charging rubbles. When rubbles 8 is packed into the casing 2, the casing 2 is set on a rubble-placing position by a crane ship 1, and the port 9 is adjusted by the cylinder 5 immediately before reaching an opening at which arch-action phenomenon to be determined by the sizes of broken stones 8 could occur. The rubbles 8 are then naturally dropped. At a time when the natural drop of the rubbles 8 is stopped, the opening degree of the port 9 is adjusted to one to cause arch- action phenomenon to take place, and the casing is moved to other places. |
