PROBLEM TO BE SOLVED: To provide a rotary cultivator which can well ensure the land-grading function of the tip edge portion of a rear cover.SOLUTION: This rotary cultivator is characterized by forming an attaching member from an attaching piece disposed on the rear cover side and a piece to be attached disposed on the land-grading member side, disposing an attaching piece side engaging portion at a position behind the tip edge portion of the rear cover and at a position above the virtual extended line of a land-graded surface formed below the tip edge portion, on the attaching piece, disposing an attaching piece side connection portion at the upper position, disposing a piece side engaging portion to be attached engaged with the attaching piece side engaging portion, on the piece to be attached, disposing a piece side connection portion to be attached connected to the attaching piece side connection portion, while the attaching piece side engaging portion engaged with the piece side engaging portion to be attached is used as a fulcrum, and detachably attaching a land-grading member to the tip edge portion of the rear cover through the attaching member.COPYRIGHT: (C)2010,JPO&INPIT【課題】リヤカバー体先端縁部の整地機能を良好に確保すること。【解決手段】取付体は、リヤカバー体側に設けた取付片と整地体側に設けた被取付片とから形成し、取付片には、リヤカバー体の先端縁部よりも後方位置で、かつ、同先端縁部の下面に形成した整地面の仮想延長線よりも上方位置に取付片側係合部を設けると共に、その上方位置に取付片側連結部を設ける一方、被取付片には、前記取付片側係合部に係合する被取付片側係合部を設けると共に、同被取付片側係合部を係合させた取付片側係合部を支点として前記取付片側連結部に連結する被取付片側連結部を設けて、リヤカバー体の先端縁部に取付体を介して整地体を着脱自在に取り付けている。【選択図】図5
