ENLARGED WING AND SOIL IMPROVEMENT STIRRING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a device capable of surely enlarging an enlarged wing of a soil improvement stirring machine at a required position regardless of the rotary direction. SOLUTION: An enlarged wing 15 includes a pair of brackets 50 fixed to a rotary shaft 10 at a certain interval in the vertical direction, a pair of enlarged arms 52 retractably borne to a bearing pin 51 stretched between the brackets 50 in a state of coming in and out, a hydraulic cylinder 53 for the retractable enlarged arms 52 and a link member 55 constructed between a pair of enlarged arms 52.