PROBLEM TO BE SOLVED: To provide an agricultural work vehicle which can be suitably used for keeping a definite tilling depth and achieving a highly accurate leveled surface necessary for the puddling work, etc., of a paddy field.SOLUTION: Provided is a puddling machine 1 provided with a rotary working part 13 attached to a traveling machine body, moving by the traveling motion of the machine body and rotating by the power transmitted from the traveling machine body. A shield cover 15 is placed above the rotary working part 13, an apron 29 is attached to the rear end of the cover in a vertically tiltable manner, a leveler 31 is attached to the rear end of the apron 29 in a vertically tiltable manner, a leveling board 23 is extended at the front side of the rotary working part 13 from one end to the other end of the width of the machine body and supported in a vertically movable manner, and an unevenness detection sensor 25 to detect the height of the unevenness of the field by the vertical motion of the leveling board 23 is attached to a link member 19 to movably support the leveling board 23. The apron 29 can be rotated by a rotation cylinder 51, and the action of the rotation cylinder 51 is controlled by a rotation controlling device 60 based on the detection value obtained by the unevenness detection sensor 25 to adjust the inclination angle of the apron 29.COPYRIGHT: (C)2009,JPO&INPIT【課題】圃場の凹凸を検出しこれを均平にする。【解決手段】代掻き作業機1は、走行機体に装着されて走行機体の走行に伴って進行し、走行機体からの動力によって回転するロータリ作業部13を備える。ロータリ作業部13の上方にシールドカバー15を設け、このカバー部の後端部にエプロン29を上下方向に回動可能に設け、エプロン29の後端部にレベラ31を上下方向に回動可能に設ける。ロータリ作業部13の前側に機体幅方向一端部から他端部間に亘って延びて上下方向に移動自在に支持された整地板23を設け、整地板23を移動自在に支持するリンク部材19に整地板23の上下移動から圃場の凹凸の高さを検出する凹凸検出センサ25を設ける。エプロン29は回動シリンダ51によって回動可能であり、凹凸検出センサ25によって検出された検出値に基づいて回動制御装置60が回動シリンダ51の作動を制御してエプロン29の傾き角度を調節する。【選択図】図1
