To provide a steel pipe pile driving device capable of (1) unforcibly carrying out a driving operation even when an obstacle exists above the operation site, (2) forming a leader having a necessary length when driving a short pipe pile, (3) being easily handled, (4) not requiring to extend the boom of the crane vehicle up to the maximum height of the leader, carrying out the driving operation even in a relatively small-sized crane vehicle, and (5) carrying out a driving operation excellent in stability and accuracy.
The steel pipe pile rotary press-in device has a leader mounting means which can be attached to the boom tip of the crane vehicle, the first long leader means provided at the lower part of the leader mounting means, the second long leader means provided in parallel with the first leader means to be vertically movable along the longitudinal direction of the first leader means, and a pile rotary press-in means provided to be vertically movable along the longitudinal direction of the second leader means so that the steel pipe pile can be freely attached, for the rotary press-in of the steel pipe pile.
SUGANO KAKUJI
HOSHINO HIROSHI
SUGIYAMA TOSHIKAZU
SUMIYA TSUTOMU
