PROBLEM TO BE SOLVED: To provide a transmission for intra-row spacing adjustment of a riding rice transplanting machine in which the shaft support strength is increased and the durability is improved.SOLUTION: A transmission for intra-row spacing adjustment of a riding rice transplanting machine is configured by storing an input shaft, a power take-off shaft, an intermediate shaft, an output shaft, a main transmission gear mechanism, an auxiliary transmission gear mechanism and a clutch, in a gearbox. The input shaft, the power take-off shaft and the intermediate shaft are disposed in parallel to each other, and each is supported at both sides in a first wall and a second wall of a counter shape of the gearbox. The main transmission gear mechanism is disposed in the first wall side of the gearbox, and the auxiliary transmission gear mechanism is disposed in the second wall side of the gearbox. The clutch is provided in a portion projected from the output shaft toward the first wall of the power take-off shaft.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2017,JPO&INPIT【課題】乗用田植機の株間調整用変速装置の軸支持強度を高め、耐久性を向上する。【解決手段】入力軸、動力取出軸、中間軸、出力軸、主変速ギア機構、副変速ギア機構、及びクラッチをギアボックスに収容してなる乗用田植機の株間調整用変速装置において、該入力軸、該動力取出軸、及び、該中間軸を、互いに平行に配置し、各々、該ギアボックスの対向状の第一壁部及び第二壁部にて両持ち支持する。該主変速ギア機構を該ギアボックスの該第一壁部寄りに、該副変速ギア機構を該ギアボックスの該第二壁部寄りに配置する。該クラッチは、該動力取出軸の、該出力軸から該第一壁部に向けて突出する部分に設けられている。【選択図】図5
