PROBLEM TO BE SOLVED: To provide a farm working machine for controlling vibration and carrying out a suitable furrow forming operation.SOLUTION: The farm working machine 1 is provided with a machine frame 2 linking to a tractor. A front end of a turning arm 3 is rotatably mounted on the machine frame 2 and a turning machine frame 4 is rotatably mounted of the rear end of the turning arm 3. A working means 5 which carries out furrow forming operation by travel motion of the tractor, is mounted on the turning machine frame 4. The farm working machine 1 is provided with a first vibration controlling arm 52 fixing one end on a part facing to the rear end part of the turning arm 3 of the turning machine frame 4, and forming a first ring part 51 which has a ring shape in plane view, with the turning machine frame 4. The farm working machine 1 is provided with a second vibration controlling arm 54 with one end rotatably fixed on the rear end part of the turning arm 3 and the other end fixed on the turning machine frame 4 and forming a second ring part which has a ring shape in rear view, with the turning machine frame 4.COPYRIGHT: (C)2009,JPO&INPIT【課題】振動を抑制して適切な畦塗り作業ができる農作業機を提供する。【解決手段】農作業機1は、トラクタに連結する機枠2を備える。機枠2には回動アーム3の前端部を回動可能に取り付け、回動アーム3の後端部には回動機枠4を回動可能に取り付ける。回動機枠4には、トラクタの走行により畦塗り作業をする作業手段5を設ける。農作業機1は、一端部を回動機枠4のうち回動アーム3の後端部と対向する部分に固着し他端部を回動機枠4の前端側に固着し回動機枠4とともに平面視環状の第1環状部51を形成する第1振動抑制用アーム52を備える。また、農作業機1は、一端部を回動アーム3の後端部に回動可能に取り付け他端部を回動機枠4に固着し回動アーム3の後端部および回動機枠4とともに背面視環状の第2環状部を形成する第2振動抑制用アーム54を備える。【選択図】図1
