PROBLEM TO BE SOLVED: To provide a spiral rotor axle mounting structure which can suppress deterioration of working efficiency of grass cutting work by preventing grass from winding around the rotation center shaft and axle of a spiral rotor.SOLUTION: A spiral rotor axle mounting structure includes a rotation center shaft 31 connected to an axle of a control machine 1, an inner support member 22 and an outer support member 27 installed on axial both sides of the rotation center shaft 31 in a direction approximately orthogonal to the rotation center shaft 31, and a spiral blade 33 connected between these support members. In order to mount spiral rotors 20, 20, rotating in accordance with the rotation of the axle, to the axle, a cylindrical body 40 enclosing the axle in a state where the rotation is restricted is installed to a transmission case 5 supporting the axle. When one end of the rotation center shaft 31 extending from the inner support member 22 of the spiral rotor 20 is connected to the axle, the cylindrical body 40 encloses the outer periphery of the one end side of the rotation center shaft 31 extending from the inner support member 22.COPYRIGHT: (C)2014,JPO&INPIT【課題】スパイラルロータの回転中心軸や車軸への草の巻き付きを防止して、刈り取り作業の作業効率の低下を抑制可能なスパイラルロータの車軸取付構造を提供する。【解決手段】管理機1の車軸に連結される回転中心軸31と、回転中心軸31の軸心方向両側に回転中心軸31に対して略直交する方向に配設された内側支持部材22及び外側支持部材27と、これらの支持部材間に接続されたスパイラル刃33とを有し、車軸の回転に伴って回転するスパイラルロータ20,20を車軸に取り付けるため、車軸を支持するミッションケース5に、回転が規制された状態で車軸を囲む筒状体40を設ける。筒状体40は、スパイラルロータ20の内側支持部材22から延びる回転中心軸31の一端部が車軸に連結されると、内側支持部材22から延びる回転中心軸31の一端側の外周を囲む。【選択図】 図3
