WIDENING EXCAVATOR AND WIDENING EXCAVATION METHOD MAKING USE OF THE EXCAVATOR

摘要

PROBLEM TO BE SOLVED: To provide a widening excavator capable of easily and freely forming a widening section of a pile hole lengthening in the axial direction of the hole.;SOLUTION: In the widening excavator equipped with a bucket 1 excavating the pile hole K, an excavation claw 21 is provided to a lower part thereof and, at the same time, a widening blade 2 excavating a widening section K1 of the pile hole by projecting it to the outside from an extent of excavation of the bucket 1 is provided to the bucket 1 so that it can be projected and retracted approximately horizontally.;COPYRIGHT: (C)2007,JPO&INPIT