| 摘要 |
PROBLEM TO BE SOLVED: To provide a grapple capable of increasing the strength of a lower frame by mitigating stresses generated in the lower frame by the force applying to a claw. SOLUTION: A plurality of claw-fitting brackets 3 are provided on an outer surface of a cylindrical part 2a of a lower cylindrical frame 2 mounted on an arm of a working machine and provided on a lower part of an upper structure with a spacing in the circumferential direction. A bottom plate 2c is welded to a bottom surface of the cylindrical part 2a of the lower frame 2. Parts 51 between the brackets 3, 3 on the outer circumference of the bottom plate 2c are recessed in a smooth curved shape. COPYRIGHT: (C)2008,JPO&INPIT
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