PROBLEM TO BE SOLVED: To provide a rice planting machine capable of preventing damage of a land-leveling rotator even when the land-leveling rotator is suddenly pushed during the operation of a land-leveling device.SOLUTION: The rice planting machine 1 includes: a land-leveling device 100 and the land-leveling device 100 includes a support link mechanism 140 for liftably (turnably) supporting a rotary support shaft 112 of a land-leveling rotator 111 relative to a transplanting part 40 a land leveling device operation part 120 for performing lifting and lowering operation of the land-leveling rotator 111 and a connection allowing mechanism 150 for connecting the support link mechanism 140 and the land-leveling device operation part 120 and allowing the land-leveling rotator 111 to lift (turn) only to a lifting side.COPYRIGHT: (C)2013,JPO&INPIT【課題】整地装置の作業中において、急な整地用回転体の押し上げがあった場合であっても、当該整地用回転体の破損を防止することができる田植機を提供する。【解決手段】田植機1は、整地装置100を備え、整地装置100は、整地用回転体111の回転支軸112を植付部40に対して昇降(回動)可能に支持するための支持リンク機構140と、整地用回転体111を昇降操作するための整地装置操作部120と、支持リンク機構140と整地装置操作部120とを連結すると共に、整地用回転体111の昇降(回動)を上昇側へのみ許容するための連結許容機構150と、を備える。【選択図】図12
