| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a horizontal excavation bucket requiring no swinging controller for controlling swinging of the bucket to be excavated almost horizontally, in grab type dredge, and capable of easily excavation-dredging horizontally a submarine face, without being affected by an operator's skill. <P>SOLUTION: An upper frame 6 is connected to a rail case 9 by a pair of left and right rod frames 10, a lower frame 7 and a pair of left and right shells 12 are further journalled crossedly by a pair of left and right opening and closing arms 11, the lower frame 7 is elevated by winding up and down an opening and closing rope 4 laid on a sheave of the lower frame 7, the pair of left and right shells 12 journalled by the lower frame 7 and the pair of opening and closing arms 11 is opening-and-closing-operated horizontally via the rail case 9, and the submarine face is thereby excavated horizontally. <P>COPYRIGHT: (C)2012,JPO&INPIT |
