SOIL IMPROVEMENT STIRRING MACHINE WITH ENLARGEMENT SENSING FUNCTION ATTACHED THERETO

摘要

PROBLEM TO BE SOLVED: To provide a device capable of being confirmed from the ground whether or not an enlarging wing provided to a soil improvement stirring machine is enlarged. SOLUTION: A switch 55 is fixed to a position located at the side of a control pin 54a and bringing a corner section 52b of an enlargement arm 52 into contact therewith. A conductive code of the switch 55 is made to pass through the inside of a hollow rotary shaft 10 from a proper place, and it is connected to a light 16 on the ground.