Construction method of the pile gripping diameter adjustment jig and rotation press pile

摘要

PROBLEM TO BE SOLVED: To reduce a burden of adjusting work of a chuck collar diameter; and to surely grip a pile when rotatingly pressing in a rotary press-in pile partially different in a diameter.;SOLUTION: This pile gripping diameter adjusting tool 1 is installed on a pile gripping surface of a chuck collar 4 in an all-casing excavator 3 for rotatingly pressing-in the rotary press-in pile 2, and is characterized in that a high friction material 23 is fixed to the pile gripping surface of the pile gripping diameter adjusting tool 1; an installing means is arranged on a chuck collar installing surface of the pile gripping diameter adjusting tool 1 for allowing only the movement in the vertical direction of the pile gripping diameter adjusting tool; and an upper fixing means and a lower fixing means are arranged in an upper part and a lower part of the chuck collar installing surface for fixing the pile gripping diameter adjusting tool 1 to the chuck collar 4.;COPYRIGHT: (C)2004,JPO&NCIPI