| 摘要 |
PROBLEM TO BE SOLVED: To provide a leaderless earth auger excavator capable of increasing a working effective length and efficiently carrying out pile driving work. SOLUTION: A suspension fixing bracket of an auger driving device is provided at the side face of the auger driving device, and a bracket at the tip of a telescopic derricking boom or a multi-stage derricking arm is movably journaled to a suspension bracket. As an alternative, an auger driving device fixing bracket provided at the side face of the auger driving device is journaled to the bracket at the tip of the telescopic derricking boom or the multi-stage derricking arm, and an auger driving device vertical holding mechanism is movably supported to the fixing bracket. COPYRIGHT: (C)2005,JPO&NCIPI
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