PROBLEM TO BE SOLVED: To provide a maintenance vehicle that does not leave deep holes on the ground, when it goes out from a farm field, while going over ridges, when the maintenance vehicle is constituted, with a freely connectable rotary tiller, to a linking mechanism on the rear part of the machine body.SOLUTION: When going out of farm field while traveling over ridges, a rotary cultivating device 11 is made to rise and drive, by making a rise-and-fall actuator rise and operate at a low speed, while being set in a state with PTO (power take-off) clutch maintained in drive transmission state.COPYRIGHT: (C)2008,JPO&INPIT【課題】 作業車において、機体の後部のリンク機構にロータリ耕耘装置を連結自在に構成した場合、畦を越えながら圃場を出る際に地面に深い穴が残らないように構成する。【解決手段】 畦を越えながら圃場を出る際に、PTOクラッチを伝動状態に維持した状態で、低速で昇降アクチュエータを上昇作動させて、ロータリ耕耘装置11を上昇駆動する。【選択図】 図6
