PROBLEM TO BE SOLVED: To provide a paddy working machine having such a construction that a paddy working apparatus is liftably supported on the rear part of the machine body and equipped with a ground working apparatus, so designed that the possibility for the ground working apparatus to push mud on paddy surface is made less when the paddy working apparatus is moved from its set height to descending side.SOLUTION: The paddy working machine comprises a height sensor 68 for detecting the height of a paddy working apparatus above paddy surface G, a lift control mechanism functioning to make a lift drive of the paddy working apparatus so as to maintain it at a set height above the paddy surface G based on the detection value given by the height sensor 68, a lift mechanism 56 functioning to liftably support a ground working apparatus 53 on the paddy working apparatus 5 and make a lift drive of the ground working apparatus 53 relative to the paddy working apparatus, and a lifting mechanism functioning to actuate the lift mechanism 56 toward the lift driving side of the ground working apparatus 53 when the paddy working apparatus is moved from its set height to descending side.COPYRIGHT: (C)2009,JPO&INPIT【課題】 機体の後部に水田作業装置を昇降自在に支持し、水田作業装置に対地作業装置を備えた水田作業機において、水田作業装置が設定高さから下降側に変位した場合、対地作業装置が田面の泥を押してしまう状態を少なくする。【解決手段】 水田作業装置の田面Gからの高さを検出する高さセンサー68と、高さセンサー68の検出値に基づいて水田作業装置を田面Gから設定高さに維持するように昇降駆動する昇降制御手段とを備える。水田作業装置5に対地作業装置53を昇降自在に支持し、対地作業装置53を水田作業装置に対して昇降駆動する昇降機構56を備える。水田作業装置が設定高さから下降側に変位すると、昇降機構56を対地作業装置53の上昇駆動側に作動させる上昇手段を備える。【選択図】 図5
