Application manner of foundation pile and ring holder device null for foundation pile application

摘要

PURPOSE: To hold surely an existing foundation pile turnably pressing into a ring part surrounding the outer periphery of a pile without core deviation and press in turnably and definitely while serving as a favorable guide action and even when there exists an obstacle and the pile is inclined to a vertical state and press in at a specified position easily and definitely. ;CONSTITUTION: When pressing a foundation pile into a ground by turning the pile, an existing foundation pile P is turnably connected continuously to a decelerating motor suspended risingly with a leader 20 at the front of a construction machine while the outer periphery of the foundation pile is enveloped with a ring holder device H installed below the leader 20. A support arm 2 installed to a plurality of locations in the part of a ring 1 of the ring holder device H is moved forward and backward at the center of the ring, thereby pushing and holding the outer periphery of the turning foundation pile P with a holding roller 5 and turningly pressing in the foundation pile at a specified pile core position.;COPYRIGHT: (C)1996,JPO