| 摘要 |
PROBLEM TO BE SOLVED: To provide a dredging grab bucket that can reduce excess water taken into a grab bucket when the bucket performs excavation at the bottom of water.SOLUTION: A dredging grab bucket 10 includes: a support 13 hung by a hanging wire W1; a pair of left and right shells 21, 22 positioned below the support, moving right and left, and opening and closing an opening part 22; a pair of left and right arms 14, 15; and a connecting shaft 20 for turnably connecting the shells. The shells are turned around spindles 18, 19, moved right and left, and opening/closing the opening part by enabling the connecting shaft to ascend and descend with an operation wire W2. Provided inside the pair of left and right shells is a pair of freely movable left and right moving members 31, 32. The moving members move when the dredging gravel gets inside the shells from the opening part while the opened shells are excavating the dredging gravel and closing. By this movement, the water existing in the moving direction of the moving member inside the shells is discharged so as to be pushed out, and the moving member is positioned to cover the dredging gravel getting inside the shells. |
