PROBLEM TO BE SOLVED: To accurately and easily locate attachment of a land-levelling rotor formed of half-divided bodies with respect to a rotor shaft, firmly assemble the land-levelling rotor, and obtain the land-levelling rotor being tough.SOLUTION: A projection 43 is provided on a mating surface 42 for the rotor shaft 23 of a rotor piece 40. The projection is inserted into an attachment recessed part 45 of the rotor shaft, thereby locating the two rotor pieces forming a pair with respect to the rotor shaft. screw fastening parts 46 and 47 for mutually fixing the projections and the two rotor pieces are provided at both ends of a coupling member 42. The land-levelling rotor 22 is assembled by fasteners attached to the screw fastening parts.COPYRIGHT: (C)2012,JPO&INPIT【課題】半割り体よりなる整地ロータのロータ軸に対する取付けの位置決めが正確かつ容易に行え、併せて整地ロータを強固に組み立て、頑丈な整地ロータを得ること。【解決手段】ロータ片４０のロータ軸２３への嵌合面４２に突起４３を設け、この突起をロータ軸の取付け凹部４５に差し込み、２個一対のロータ片相互をロータ軸に位置決めする。突起と２個のロータ片相互を固定する螺子止め部４６，４７を両端の連結部材４２に設け、螺子止め部に装着した締具により整地ロータ２２を組み立てる。【選択図】図３
