PROBLEM TO BE SOLVED: To provide a tilling work machine capable of stably housing an extended leveling plate, and having good operability for moving the leveling plate from its folding position to spreading site.SOLUTION: A puddling implement 1 comprises: a second leveling plate (left) 28L which is arranged vertically and freely turnably rearward a shield cover (left) 241 covering the upper part of a tilling rotor and levels a cultivated soil tilled by the tilling rotor and an extended leveling plate (left) 33L which is supported freely turnably around an axial part 32 extending in a front-rear direction at the end of the right-left direction relative to the traveling direction of the implement and extends to the side of the second leveling plate (left) 28L during the spreading to assist the leveling operation of the plate 28L. The extended leveling plate (left) 33L comprises an extending plate (left) 40L provided protrusibly and retractably to the top of an extending direction. The extending plate (left) 40L is detachably provided at a protruding position Pd protruding from the top of the extending direction of the plate 33L and at a housing position of the top inside of the plate 33L in such a state as to be overlapped with the plate 33L.COPYRIGHT: (C)2013,JPO&INPIT【課題】延長整地板を安定して格納することができ、延長整地板を折り畳み位置又は展開位置に移動させる操作の操作性がよい耕耘作業機を提供する。【解決手段】代かき作業機1は、耕耘ロータの上部を覆うシールドカバー左24lの後方に上下方向に回動自在に配設されて耕耘ロータにより耕耘された耕土を整地する第2整地板左28Lと、この進行方向に対して左右方向の端部に前後方向に延設された軸部32を中心として回動自在に支持されて展開時に第2整地板左28Lの側方へ延びて第2整地板左28Lの整地作業を補助する延長整地板左33Lとを備える。延長整地板左33Lは、その延長方向先端部に突出入可能に設けられた延長板左40Lを備える。延長板左40Lは、延長整地板左33Lに重ね合わされた状態で延長整地板左33Lの延長方向先端部から突出する突出位置Pdと、延長整地板左33Lの先端部内側に収まる格納位置に着脱可能に設けられる。【選択図】図1
