PROBLEM TO BE SOLVED: To achieve a transmission structure of a walking type rice transplanter which is capable of changing speed of both a traveling transmission system and a planting transmission system while simplifying the transmission structure in a transmission case.SOLUTION: The transmission structure of the walking type rice transplanter includes a first transmission shaft 33 to which power from an engine E is input, and a second transmission shaft 37 for branching the power from the first transmission shaft 33 to the traveling transmission system and the planting transmission system arranged in the transmission case M. Furthermore, the transmission structure includes a speed change gear part 39 for the speed change of the power to the traveling transmission system and the planting transmission system over the first transmission shaft 33 and the second transmission shaft 37.COPYRIGHT: (C)2009,JPO&INPIT【課題】ミッションケース内の伝動構造を簡素化しながら、走行伝動系及び植付伝動系の双方を変速できる歩行型田植機の伝動構造を実現する。【解決手段】歩行型田植機の伝動構造において、ミッションケースMに、エンジンEからの動力が入力される第1伝動軸33と、第1伝動軸33からの動力を走行伝動系及び植付伝動系に分岐する第2伝動軸37と、を備え、第1伝動軸33と第2伝動軸37とに亘って、走行伝動系及び植付伝動系への動力を変速する変速部39を備える。【選択図】図5
