[PROBLEMS]: TO IMPROVE OPERABILITY OF THE CONVEYOR CYLINDER IN GRAIN-DISCHARGE OPERATION. [SOLUTIONS] TO SOLVE PROBLEMS BY THE CONFIGURATION WHEREIN THE THIRD CYLINDER MEMBER (7) AT THE CONVEYOR CYLINDER (6) AND THE LOWER PART OF THIS CONVEYOR CYLINDER (6) IS TO SUPPORT FREELY ROTATABLY ROLLING AROUND THE FIRST AXIS (Y) IN LONGITUDINAL DIRECTION&NBSP AND THE LOCK PIN (13) AT THE LOCK PLATE (12) IS PROVIDED TO ROTATE INTEGRALLY WITH THE THIRD CYLINDER MEMBER (7)&NBSP AND A PLURALITY OF HOLE (14) IS FORMED AT THE SUPPORTING MEMBER (11) AND FIXED AT THE VEHICLE FRAME (3) SIDE&NBSP AND THE CONCAVE PART (15) .....
