PROBLEM TO BE SOLVED: To provide a paddy field working machine that can arrange a trencher at the center in the lateral direction of the machine while facilitating holding the right left weight balance of the machine.SOLUTION: A paddy field working machine is provided, comprising at the back side of a machine: a plurality of working units arranged in a row in the lateral direction of the machine a ground float 12 arranged under the working unit and transmission cases 26 arranged in the machine fore-and-aft direction. The driving force of a driving case 19 is transmitted to a working unit at the right side of the machine from a transmission case 26 at the right side of the machine, and the driving force of the driving case 19 is transmitted to a working unit at the left side of the machine from a transmission case 26 at the left side of the machine. A support rod 55 is provided in the lateral direction of the machine, the rod connecting the transmission cases 26 at the right and left side of the machine. A trencher 14 for forming drain ditches on a field surface is disposed at the machine back side of the ground float 12 and at the center in the lateral direction of the machine to be supported by the support rod 55.COPYRIGHT: (C)2015,JPO&INPIT【課題】機体の左右重量をバランスさせ易くしながら、溝切り体を機体横方中央部に配備することができる水田作業機を提供する。【解決手段】機体の後部に、機体横方向に並ぶ複数の作業部、作業部の下側に配置された接地フロート12、機体前後向きの伝動ケース26を設ける。駆動ケース19の駆動力を機体右側の伝動ケース26から機体右側の作業部に伝達し、駆動ケース19の駆動力を機体左側の伝動ケース26から機体左側の作業部に伝達する。機体右側及び機体左側の伝動ケース26にわたって連結した機体横向きの支持杆55を設け、圃場面に排水溝形成する溝切り体14を、接地フロート12の機体後側で機体横方向での中央部に配置して支持杆55に支持させる。【選択図】図7
