| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotary table device of a rotary excavator, for constructing a pile foundation using one crane, which does not require the crane to move the rotary table device to a next pile hole excavation site after finishing excavation work of a previous pile hole and can shorten a construction period of pile foundation construction by improving work efficiency thereof.SOLUTION: A rotary table device (T) of a rotary excavator comprises: a rotary table (1) which has a table base (10), a rotary drive section (17) installed on the table base (10) to rotate a rotary excavator (3) by holding the same in a manner that can move up and down in a vertical state, a travel section (15) provided with drive wheels (154 and 154a) driven by hydraulic motors (173 and 174) and a driven wheel and an outrigger (12) installed on the table base (10); and a track section (2) where the rotary table (1) travels thereon with the travel section (15).</p> |
