PROBLEM TO BE SOLVED: To provide a working vehicle for carrying out right or left inclination control for holding the working vehicle in a previously set right or left inclination posture to a field surface regardless of the right or left inclination of a traveling machine body, and executing the right or left inclination control in high accuracy at a low cost.SOLUTION: The working vehicle includes: a front wheel-side tilted angle-detecting means for supporting the traveling machine body 3 by a front axle case 23 so as to be tiltable in the right and left direction for the purpose of inhibition of the right or left inclination of the traveling machine body 3 by the right or left inclination of the front axle case 23 at the front wheel 1 side, and for detecting the right or left tilted angle of the front axle case 23 and a vehicle speed-detecting means for detecting the traveling speed of the traveling machine body 3. A controlling part predicts a subsequent right or left tilted angle of the traveling machine body 3 from the right or left tilted angle of the front axle case 23, which is previously detected by the front wheel-side tilted angle-detecting means, and a result detected by the vehicle speed-detecting means, and executes the right or left inclination control based on a predicted result and the result detected by the tilted angle-detecting means 36.COPYRIGHT: (C)2012,JPO&INPIT【課題】走行機体の左右傾斜に拘わらず作業機を圃場面に対して予め定められた左右傾斜姿勢で保持させる左右傾斜制御を行う作業車両であって、低コストで、精度の高い左右傾斜制御を実行することが可能な作業車両を提供する。【解決手段】前輪1側のフロントアクスルケース23の左右傾斜によって走行機体3が左右傾斜することを抑制するために、走行機体3をフロントアクスルケース23に左右傾斜可能に支持し、フロントアクスルケース23の左右傾斜角を検出する前輪側傾斜角検出手段と、走行機体3の走行速度を検出する車速検出手段とを設け、制御部は、前輪側傾斜角検出手段によって事前に検出されたフロントアクスルケース23の左右傾斜角と、車速検出手段からの検出結果とによって、走行機体3のその後の左右傾斜角を予測し、予測結果及び傾斜角検出手段36の検出結果に基づいて左右傾斜制御を実行する。【選択図】図1
