PROBLEM TO BE SOLVED: To provide a work vehicle capable of improving lift responsiveness and energy efficiency of a work machine.SOLUTION: A work vehicle comprises: a work machine mounting device 20 which mounts a work machine 11 at a rear part of a tractor 1 and lifts up and down the work machine right and left lift arms 25R, 25L which are connected to the work machine mounting device 20 and lifts and rotates right and left electric lifting motors 32R, 32L which are connected to arm shafts 25a, 25a of the right and left lift arms 25R, 25L through reduction gears 31R, 31L brakes 33R, 33L which are provided at the reduction gears 31R, 31L brake actuators 36R, 36L angle sensors 34R, 34L which detect inclination angles of the right and left lift arms 25R, 25L an inclination sensor 44 which is inclination angle detection means work machine height setting means 45 which is rotational angle setting means for the lift arms 25R, 25L and a control circuit 40 which is control means. The control means operates the electric lifting motors and controls the height and the inclination angle of the work machine 11 simultaneously to preset values.COPYRIGHT: (C)2015,JPO&INPIT【課題】作業機の昇降応答性やエネルギー効率を向上できる作業車両を提供する。【解決手段】トラクタ1の後部に作業機11を装着して昇降するための作業機装着装置20と、作業機装着装置20に連結して昇降回動する左右のリフトアーム25R・25Lと、左右のリフトアーム25R・25Lのアーム軸25a・25aに減速機31R・31Lを介して連結される左右の電動昇降モータ32R・32Lと、前記減速機31R・31Lに設けられるブレーキ33R・33Lと、ブレーキアクチュエータ36R・36Lと、左右のリフトアーム25R・25Lの回動角度を検知する角度センサ34R・34Lと、傾斜角度検知手段となる傾斜センサ44と、リフトアーム25R・25Lの回動角度設定手段となる作業機高さ設定手段45と、制御手段となる制御回路40とを備え、制御手段は前記電動昇降モータを作動して作業機11の高さと傾斜角度を同時に設定値に制御する。【選択図】図5
