TURNING FRAME FOR TURNING WORKING VEHICLE

摘要

PROBLEM TO BE SOLVED: To improve the shape of a turning frame to increase the degrees of freedom in turning. SOLUTION: In this turning frame for the turning working vehicle having a variable leg structure capable of changing a lateral width between left and right crawlers, the outer circumference shape in each of corner parts 2L and 2R on the front side in a plane view of the turning frame is formed into a circular arc, and a distance 9a from the turning center to the corner part end is set to be shorter than a distance 9b from the turning center to the left/right side end part within a range from the maximum width to the minimum width of the lateral width.