PROBLEM TO BE SOLVED: To provide a paddy field working machine which is constituted to suppress the length of a link mechanism while avoiding the interference of a ground working device with a rear wheel of a machine body when a paddy field working apparatus is greatly lifted from a paddy field surface, in the case where the ground working device is supported on the paddy field working apparatus.SOLUTION: The ground working device 54 is constituted to be freely movable between a working position which is located in the front-side lower part of the paddy field working apparatus 5, and a receding position A5 which is located in the rear with respect to the working position. This paddy field working machine is equipped with a moving means 83 for moving the ground working device 54 to the receding position A5 from the working position as the paddy field working apparatus 5 is lifted to a lifted position from a ground position, and for moving the ground working device 54 to the working position from the receding position A5 as the paddy field working apparatus 5 is lowered to the ground position from the lifted position.COPYRIGHT: (C)2008,JPO&INPIT【課題】 水田作業機において、対地作業装置を水田作業装置に支持した場合、水田作業装置を田面から大きく上昇させた際の対地作業装置と機体の後輪との干渉を避けながら、リンク機構の長さを抑えることができるように構成する。【解決手段】 水田作業装置5の前側下方に位置する作業位置と、作業位置よりも後方に位置する退避位置A5とに、対地作業装置54を移動自在に構成する。水田作業装置5が接地位置から上昇位置に上昇するのに伴って、対地作業装置54を作業位置から退避位置A5に移動させ、水田作業装置5が上昇位置から接地位置に下降するのに伴って、対地作業装置54を退避位置A5から作業位置に移動させる移動手段83を備える。【選択図】 図12
