PROBLEM TO BE SOLVED: To provide a devicefor controlling attitude of working device which can reduce the vehicle body attitude-changing speed for preventing deterioration of ride comfort, when the attitude of the vehicle body with respect to a travel unit does not have the risk of changing by a large amount, and can quickly perform attitude change operation, when the attitude of the vehicle body with respect to the travel unit is changed by a large amount.SOLUTION: This working vehicle attitude control device is equipped with a plurality of driving means, capable of lifting or lowering one side position and the other side position separated in an inclination angle-changing direction on the vehicle body, on the basis of the grounding portion of the travel device performing attitude change control for controlling the driving means to keep an inclination angle with respect to the horizontal standard surface of the vehicle body to a set inclination angle, on the basis of the detection information of inclination angle detection means performing a single-side driving type attitude change operation, when it is discriminated as not being an attitude change timing where a large change in the vehicle body attitude with respect to the travel unit is predicted and performing a both-side driving type attitude change operation, when it is discriminated as being an attitude change timing.COPYRIGHT: (C)2008,JPO&INPIT【課題】 走行装置に対する車体の姿勢が大きく変化するおそれが少ない場合には車体の姿勢変更速度を遅くして乗り心地が低下することを防止しながらも、走行装置に対する車体の姿勢が大きく変化するような場合には迅速に姿勢変更操作を行うことが可能な作業車の姿勢制御装置を提供する。【解決手段】 車体における傾斜角変更方向に離れた一端側箇所及び他端側箇所夫々を走行装置の接地部に対して昇降自在な複数の駆動手段を備え、傾斜角検出手段の検出情報に基づいて、車体の水平基準面に対する傾斜角が設定傾斜角に維持されるように駆動手段を制御する姿勢変更制御を実行するように構成され、走行装置に対する車体の姿勢が大きく変化すると予測される姿勢変動タイミングでないことが判別されると片側駆動形式の姿勢変更操作を実行し、且つ、姿勢変動タイミングであることが判別されると両側駆動形式の姿勢変更操作を実行する。【選択図】 図10
