PROBLEM TO BE SOLVED: To easily accommodate a wire by easily opening and turning a rear cover by the wire, in a rotary tillage device.SOLUTION: In a rotary tillage device, an upper part of a tillage claw is covered with a tillage cover, a rear cover is supported to a rear end of the tillage cover around a horizontal axis so as to be adjustable in vertical turn, a front end of a hitch connecting rod is pivoted to a tillage frame around the horizontal axis so as to be adjustable in vertical turn, a rear-wheel assembling slide hitch of an auxiliary working machine progressing along the horizontal direction is attached to a rear side end of the hitch connecting rod so as to be adjustable in the longitudinal direction, the slide hitch is constituted so as to be liftable via the hitch connecting rod by telescopically-adjustable tillage-depth adjusting means which is arranged at the tillage frame, and the slide hitch and the rear cover are detachably connected to each other by a prescribed-long pulling wire. Accommodation support means for accommodating and supporting a tip side of the pulling wire removed from the rear cover is arranged at the slide hitch.COPYRIGHT: (C)2015,JPO&INPIT【課題】ロータリ耕耘装置において、リヤーカバーをワイヤで容易に開放回動し、このワイヤの収納を構成する。【解決手段】耕耘爪の上部を耕耘カバーで被覆し、耕耘カバーの後端部に左右方向の軸回りにリヤーカバーを上下回動調節自在に支持し、耕耘フレーム部にヒッチ連結棒の前端を左右方向の軸回りに上下回動調節自在に軸支し、ヒッチ連結棒の後側端部に左右方向に沿っている補助作業機の尾輪取付用のスライドヒッチを前後調節自在に取り付け、耕耘フレーム部に設けている伸縮調節自在な耕深調節手段でヒッチ連結棒を介してスライドヒッチを昇降調節可能に構成し、スライドヒッチとリヤーカバーとを所定長さの引き上げワイヤにより着脱自在に連結しているロータリ耕耘装置において、リヤーカバーから取り外した引き上げワイヤの先端側を収納支持する収納支持手段をスライドヒッチに設ける構成とする。【選択図】図4
