| 摘要 |
PROBLEM TO BE SOLVED: To obtain a skeleton bucket having high durability and a good segregation function. SOLUTION: The skeleton bucket has a bucket body (21) whose bottom part is formed by a lattice frame (24) having a number of segregation holes (27). In the skeleton bucket, resistance bars (26a) extending over the substantially whole area in the right/left width direction are fixed to an inner face of the lattice frame (24) at predetermined intervals in the up/down direction in a projecting manner. The lattice frame (24) comprises a number of vertical bars (25) extending in the up/down direction, and a number of horizontal bars (26) extending in the right/left direction and intersecting with the vertical bars (25). Each of the horizontal bars (26) is made to project inward in relation to the vertical bars (25). The projecting parts constitute the resistant bars (26a). COPYRIGHT: (C)2005,JPO&NCIPI
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