PROBLEM TO BE SOLVED: To smoothly perform a reaping operation by stabilizing the reaping operation of a reaping part with low-speed rotation.SOLUTION: A combine harvester includes: a traveling device (3) provided below a machine body frame (1) a thresher (2) provided on the upside of the machine body frame (1) a reaping part (4) provided on the front side of the machine body frame (1) and a supply/transport device (10) for supplying a reaped grain culm transported by a transport device on the reaping part (4) side to a threshing chamber of the thresher (2). The reaping part (4) is driven from a hydraulic static continuously variable transmission (21) provided on the machine body through an epicyclic gearing (70). When the rotating speed of an output shaft (38) of the hydraulic static continuously variable transmission (21) reaches a predetermined rotating speed or more, the output to the reaping part (4) side is started. A one-way clutch (80) is provided in a power transmission path from the epicyclic gearing (70) to the reaping part (4).COPYRIGHT: (C)2014,JPO&INPIT【課題】刈取部の低速回転での刈取作業を安定させ、刈取作業を円滑に行えるものとする。【解決手段】機体フレーム(1)の下側に走行装置(3)を備え、機体フレーム(1)の上側には脱穀装置(2)を備え、機体フレーム(1)の前側に刈取部(4)を備え、該刈取部(4)側の搬送装置によって搬送された刈取穀稈を脱穀装置(2)の脱穀室に供給する供給搬送装置(10)を備え、機体に備えた静油圧式無段変速装置(21)から遊星歯車機構(70)を介して刈取部(4)を駆動する構成とする。また、静油圧式無段変速装置(21)の出力軸(38)の回転速度が所定の回転速度以上になったときに、刈取部(4)側への出力が開始される構成とする。また、遊星歯車機構(70)から刈取部(4)へ動力伝達経路中にワンウェイクラッチ(80)を備える。【選択図】図8
