PROBLEM TO BE SOLVED: To improve operability of a control valve and a working clutch in a paddy field working machine.SOLUTION: A paddy field working machine comprises: a control valve 24 actuating a hydraulic cylinder 5 by supplying/discharging fluid to/from the hydraulic cylinder 5； a lifting linkage mechanism 43, 44 maintaining a work device at a prescribed height H1 from a paddy field G by operating the control valve 24； and a lifting control unit 101 which actuates, when a lifting actuator 56 capable of operating the control valve 24 and a working clutch 21 and an operation tool 78 capable of being manually operated are given, the lifting actuator 56 with operations of the operation tool 78. The lifting control unit 101 actuates, when the operation tool 78 is operated into an elevated position U2, the lifting actuator 56 so that the working clutch 21 is operated into the cut-off position, and the control valve 24 is operated and maintained into the elevated working position in preference to the lifting linkage mechanism 43, 44.SELECTED DRAWING: Figure 19COPYRIGHT: (C)2020,JPO&INPIT【課題】水田作業機において、制御弁の操作性及び作業クラッチの操作性を向上させる。【解決手段】油圧シリンダ５に作動油を給排操作して油圧シリンダ５を作動させる制御弁２４と、制御弁２４を操作して作業装置を田面Ｇから設定高さＨ１に維持する昇降連係機構４３，４４とが備えられる。制御弁２４及び作業クラッチ２１を操作可能な昇降アクチュエータ５６と、人為的に操作可能な操作具７８と、操作具７８の操作に基づいて昇降アクチュエータ５６を作動させる昇降制御部１０１とが備えられる。昇降制御部１０１は、操作具７８が上昇位置Ｕ２に操作されると、作業クラッチ２１が遮断位置に操作され、且つ、昇降連係機構４３，４４に優先して制御弁２４が上昇作動位置に操作されて維持されるように、昇降アクチュエータ５６を作動させる。【選択図】図１９
