To provide a deflection steering type working vehicle capable of connecting a front vehicle body frame with a rear vehicle body frame so as to deflect freely centered on a vertical axial line, simplifying a structure of a connection part of the rear vehicle body frame and the front vehicle body frame, providing it with strength, and facilitating manufacture.
The rear vehicle body frame is provided with a pair of left and right main frames extending in the fore and aft directions of a vehicle body at a predetermined interval, a pair of upper and lower connection frames like flat plates which are stretched between flat inner side faces on a front vehicle body frame side of each of the pair of main frames and in which a pin hole for specifying the vertical axial line is formed, and a pair of connection members which are stretched between the pair of connection frames, are joined by welding, and are joined with the inner side faces of the main frames together with the connection frames by welding.
IMAHASHI MASANORI
KUDO TATSU
Sachiko Okunuki