| 摘要 |
PROBLEM TO BE SOLVED: To provide a leader hanger of a pile driver capable of being mounted to leader members at an optional position. SOLUTION: For a leader 5 of the pile driver 1 equipped with a rack 20 fixed through a mounting seat 24 and constituted by connecting a plurality of leader members 11 to 17, it is used for suspending a leader member 10 in the case a length of the leader is changed, and the leader hanger 30 of the pile driver is so constituted that the rack 20 is held and that the movement in the longitudinal direction can be regulated by a positioning member 39 inserted between teeth of the rack 20. COPYRIGHT: (C)2007,JPO&INPIT
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