The utility model relates to a hinged ball washer device for a grader traction frame and belongs to the technical field of mechanical assembly. The hinged ball washer device for the grader traction frame comprises a hinged support (1), a hinged ball (2), a traction frame fixing plate (3) and washers (4); the hinged support is connected with the traction frame fixing plate by a bolt; and the washers are filled between the hinged support and the traction frame fixing plate to fix the hinged ball. According to the utility model, by adopting different thicknesses of washers and regulating different numbers of washers, regulation on a part clearance error is completed so as to meet the clearance error between the hinged seat and the traction frame fixing plate, fulfill the aims of reducing a gap between the hinged seat and the traction frame fixing plate, solve the problem of bolt loosening or breakage caused by the gap, reduce friction and prolong service life of a working device; the process of the hinged ball washer device is not complex; and the hinged ball washer device has higher operating efficiency and is flexible to operate.