PROBLEM TO BE SOLVED: To prevent soil from being attached to a tilling shaft, or a bolt or a nut for fixing tilling tines to the tilling shaft.SOLUTION: The tilling implement is equipped with a tilling rotor 10 supported so as to be freely rotatable. The tilling rotor 10 is equipped with the tilling shaft 11 rotating by receiving the power from a traveling machine body, and the tilling tines 15 arranged on the tilling shaft 11, and has a through-hole into which the tilling shaft 11 between the neighboring tilling tines 15 installed in the shaft direction of the tilling shaft 11 is inserted, and a ring body 20 to be attached to the tilling shaft 11 by allowing the tilling shaft 11 between the neighboring tilling tines 15 to be inserted to the through-hole, and having a width shorter than the distance between the neighboring tilling tines 15. The ring body 20 has unevenness 29 formed in the terminal parts in the width direction. The ring body 20 is freely rotatable based on the tilling shaft 11 and freely movable between the neighboring tilling tines 15 in accordance with the rotation of the tilling shaft 11.COPYRIGHT: (C)2009,JPO&INPIT【課題】耕耘軸や、耕耘爪を耕耘軸に固定するボルト、ナットへの土の付着を防止する。【解決手段】耕耘作業機は、回転可能に支持された耕耘ロータ10を備える。耕耘ロータ10は、走行機体から動力を受けて回転する耕耘軸11と、この耕耘軸11に配設された耕耘爪15と、耕耘軸11の軸方向に隣接して設けられた耕耘爪15間の耕耘軸11が挿通される挿通孔を有すると共に、隣接する耕耘爪15間の距離よりも短い幅を有し、隣接する耕耘爪15間の耕耘軸11が挿通孔に挿通されて耕耘軸11に装着されるリング体20を有する。リング体20は、その幅方向端部に凹凸29が形成される。リング体20は、耕耘軸11の回転に伴い、耕耘軸11に対して遊転自在で且つ隣接する耕耘爪15間を移動自在である。【選択図】図1
