| 摘要 |
<p>A crane tool (40, 70) includes: a hook portion (42) for hanging a work (W), attached to one arm section (13) in a first robot arm (10A, 60A) having a base (11), a plurality of arm sections (12 to 14) connected to the base in series, and a plurality of joints (15 to 17) adapted to swing the arm sections, respectively, the crane tool; a counterweight portion (43); and a joint portion (J1, J2) connecting the hook portion to the counterweight portion. The counterweight portion is located such that a joint (16) swinging the arm section to which the hook portion is attached is interposed between the hook portion and the counterweight portion in substantially a horizontal direction.
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