PROBLEM TO BE SOLVED: To provide a chain for performing stable transmission and smooth conveyance regarding the chain provided for transferring grain stalks from the head harvesting unit side to a feed chain.SOLUTION: The chain (6b) for transferring the grain stalks from the conveyance terminal end of a grain stalk feeder (5) provided at the head harvesting unit (3), to the feed chain (4) provided at a thresher (1), is disposed inside the feed chain (4), and the chain (6b) is associated with a transmission portion (12) by which power is transmitted tuning to the vehicle speed from the head harvesting unit (3) side. A chain rail (44) is provided at a conveying action side part between a wheel body of a conveyance starting end and a wheel body of the conveyance terminal end over which the chain (6b) is placed, and a chain straining portion (45a) for applying tension to the chain (6b) is provided at a non-conveying action side part between the wheel body of the conveyance starting end and the wheel body of the conveyance terminal end.COPYRIGHT: (C)2012,JPO&INPIT【課題】刈取前処理装置側からフィードチェンへ穀稈を受け継ぐために設けたチェンを、安定した伝動を行え、円滑な搬送が行えるものとする。【解決手段】刈取前処理装置(3)に備えた穀稈供給装置(5)の搬送終端部から脱穀装置(1)に備えたフィードチェン(4)へ穀稈を受け継ぐチェン(6b)をフィードチェン(4)の内側に配置し、このチェン(6b)を刈取前処理装置(3)側から車速に同調して伝動される伝動部(12)に連動させ、このチェン(6b)を掛ける搬送始端部の輪体と搬送終端部の輪体との間の搬送作用側の部位にチェンレール(44)を設け、搬送始端部の輪体と搬送終端部の輪体との間の非搬送作用側の部位には、チェン(6b)に張力を与えるチェン張り部(45a)を設ける。【選択図】図12
