PROBLEM TO BE SOLVED: To obtain a reaping harvester that lessens possibility of a reaping part thrusting into the ground surface, in spite of carrying out a reaping operation while maintaining a longitudinal inclination angle to the horizontal base level of a traveling machine body at a set inclination angle.SOLUTION: The reaping apparatus has a constitution that a control means for carrying out a reaping rise and fall control for controlling the operation of a reaping cylinder C1 so as to make the ground height of the reaping part 10 at a control target height and a position control for controlling the operation of a position change operation means so as to maintain a longitudinal inclination angle to the horizontal base level of the traveling machine body V at a set inclination angle determines a value higher by a set amount for a forward inclination action than a standard ground height fixed according to a target ground height set by a target ground height setting means when the longitudinal inclination angle of the traveling machine body V in the shape of the reaping part 10 approaching the ground surface is changed in position in the front lowering inclination direction and determines a standard ground height as a control target height when the longitudinal inclination angle of the traveling machine body V is not changed in position in the front lowering inclination direction.COPYRIGHT: (C)2009,JPO&INPIT【課題】 走行機体の水平基準面に対する前後傾斜角を設定傾斜角に維持しながら刈取作業を行うことが可能なものでありながら、刈取部が地面に突っ込むおそれを少なくすることが可能な刈取収穫機を提供する。【解決手段】 刈取部10の対地高さが制御目標高さになるように刈取シリンダC1の作動を制御する刈取昇降制御並びに走行機体Vの水平基準面に対する前後傾斜角が設定傾斜角に維持されるように姿勢変更操作手段の作動を制御する姿勢制御を実行する制御手段が、刈取部10が地面に近付く形態で走行機体Vの前後傾斜角を前下がり傾斜方向に姿勢変更させているときは、目標対地高さ設定手段にて設定される目標対地高さに対応させて定めた基準対地高さよりも前傾斜操作用設定量だけ高い値を制御目標高さとして定め、走行機体Vの前後傾斜角を前下がり傾斜方向に姿勢変更させていないときは基準対地高さを制御目標高さとして定める。【選択図】 図1
