PROBLEM TO BE SOLVED: To provide a sulky rice transplanter capable of performing seedling planting work without bringing a swingable preliminary seedling tray into contact with a wall face of a ridge edge or the like, the swingable preliminary seedling tray being swingable about a swinging shaft core.SOLUTION: A locking mechanism supports a preliminary seedling tray 50 swingable about a swinging shaft core P and determines a swinging attitude of the preliminary seedling tray 50. The locking mechanism includes: a locking plate 39 having a storage engagement part 72 accommodating to a storage attitude, and an intermediate engagement part 73 accommodating to an intermediate attitude and a locking arm 70 engaged/disengaged with respect to an engagement part.COPYRIGHT: (C)2014,JPO&INPIT【課題】揺動軸芯を中心にして揺動自在な予備苗載台を、畦際の壁面等に接触させずに苗植付作業を可能にする乗用型田植機を構成する。【解決手段】揺動軸芯Pを中心に揺動自在に予備苗載台50を支持し、この予備苗載台50の揺動姿勢を決めるロック機構が、格納姿勢に対応する格納係合部72及び中間姿勢に対応する中間係合部73を有したロックプレート39と、係合部に係脱するロックアーム70とを備えて構成した。【選択図】図12
