PROBLEM TO BE SOLVED: To prevent grain quality from deteriorating as the result of damage to grains when they are conveyed by a conveying screw.SOLUTION: In this transmission structure of a combine harvester having a transmission means B for transmitting power from an engine 72 to a plurality of devices D to be driven, the transmission means B transmits the power from the engine 72 to a winnower 21 that is one of the plurality of devices D to be driven. A winnower shaft 51 of the winnower 21 branches the power to a high-speed transmission system H and a low-speed transmission system L. Low-speed power from the low-speed transmission system L is transmitted to conveying screws 60, 62, 65 which are among the plurality of devices D to be driven.COPYRIGHT: (C)2012,JPO&INPIT【課題】搬送スクリュによる搬送で穀粒が損傷することに起因した穀粒品質の低下を防止することにある。【解決手段】エンジン72からの動力を複数の被駆動機器Dに伝達する伝動手段Bを備えたコンバインの伝動構造において、伝動手段Bを、エンジン72からの動力を複数の被駆動機器Dのうちの唐箕21に伝達し、唐箕21の唐箕軸51にて高速伝動系Hと低速伝動系Lとに分岐し、低速伝動系Lからの低速動力を複数の被駆動機器Dのうちの搬送スクリュ60,62,65に伝達するように構成する。【選択図】図7
