PROBLEM TO BE SOLVED: To solve the problem that it takes time to perform replacement work because extension leveling bodies of different shapes for performing soil-puddling work and performing usual tilling work need to be mounted to a rear cover, and component management is troublesome because of needing to provide a plurality of extension leveling bodies.SOLUTION: The rotary tiller includes flexible rubber plates 29 provided at the front ends in the traveling direction of extension leveling bodies 27 projectingly mounted to both ends of the rear cover 23, and the corner parts C1 and C2 of the rubber plate 29 are bent to guide soil in the field making contact with the rubber plate 29, to inside or outside the rear cover.COPYRIGHT: (C)2013,JPO&INPIT【課題】代掻き作業を行う場合と、通常の耕耘作業を行う場合とで形状の異なる延長整地体をリヤカバーに取付ける必要があり、交換作業に手間がかかると共に、複数の延長整地体を備える必要があるため部品管理などが煩わしくなる。【解決手段】リヤカバー23の両端に突出するように取付けられる延長整地体27の進行方向前方側の端部に可撓性を有したゴム板29を設け、該ゴム板29の隅部C1,C2を折り曲げることで、ゴム板29に接触する圃場の土壌をリヤカバーの内方か外方に案内する。【選択図】図2
