| 摘要 |
PROBLEM TO BE SOLVED: To provide a pile driver having a simple structure and capable of suppressing interference sound generated by a chain abutting on a leader.SOLUTION: Each of leader members configuring a leader 14 is formed in a square cylindrical shape having a front plate 20a positioned on a front face of the leader 14, a pair of left and right side plates 20b positioned on both side faces of the leader 14, and a rear plate 20c positioned on a rear face of the leader 14. A flange 19 for connection is provided at an end part of each leader member, the flange 19 is provided in a state that it is housed in a flange housing step part 26 provided on a front face of the leader member, the flange housing step part 26 is formed in a state that an end part of the front plate 20a is offset rearward, and a chain guide member 27 for preventing a chain 17b passing on the inner side of the leader from coming into contact with an inside surface of the flange housing step part 26 is provided. |
