PROBLEM TO BE SOLVED: To provide a rotary tilling device in which the connection between a plate and a control member that restricts the movement of the transverse direction center part of a lower edge part of the plate is hard to be released.SOLUTION: The rotary tilling device includes: a plate 18 which has flexibility, and in which the upper end is connected to the rear end of a cover 11 of a rotary tilling device swingably up and down a height setting member 12 which grounds the ground surface and sets the height to the ground surface of the rotary tilling device a supporting member 27 which can support the transverse direction center part of the plate 18 over the entire vertical direction and is supported by the cover 11 freely swingably up and down and a coupling means 34 which connects the supporting member 27 and the height setting member 12 freely releasably.COPYRIGHT: (C)2013,JPO&INPIT【課題】平板と、当該平板の下辺部の横方向中央部の移動を規制する規制部材との連結が解除され難いロータリ耕耘装置を提供すること。【解決手段】可撓性を有し、且つその上端部がロータリ耕耘装置のカバー11の後端部に上下に揺動可能に連結されている平板18と、地面に接地してロータリ耕耘装置の地面に対する高さを設定する高さ設定部材12と、平板18の横方向中央部を上下方向全体に亘って支持可能でカバー11に上下揺動自在に支持される支持部材27と、支持部材27と高さ設定部材12とを解除自在に連結する連結手段34とを備える。【選択図】図5
