PROBLEM TO BE SOLVED: To provide a combine in which a driving speed of a feed chain is shifted in conjunction with a reaping conveyance speed of the combine, and is satisfactorily succeeded in the feed chain from a reaping conveying device even if the amount of the reaped grain culms fluctuates, and thereby the threshing thereof is continued.SOLUTION: A combine includes a hydraulic continuously variable transmission (10) for a feed chain to perform speed control of a feed chain speed (VF) of a feed chain (12B) for supplying reaped grain culms to a threshing device (3), and a reaping hydraulic continuously variable transmission (66) to perform speed control of a conveyance speed (VH) of a reaping conveying device (34) for conveying the reaped grain culms to the threshing device (3). In the state where a traveling speed (V) of a traveling device exceeds a predetermined second low-speed value (V02), the speed control of the feed chain speed (VF) is performed according to the reaping conveyance speed (VH), and in the state where the traveling speed (V) is in a second low-speed value (V02) or less, the speed control of the feed chain speed (VF) is performed according to the traveling speed (V).COPYRIGHT: (C)2015,JPO&INPIT【課題】本発明の主たる課題は、フィードチェンの駆動速度をコンバインの刈取搬送速度と連動して変速して、刈取穀稈の量が変動しても刈取搬送装置からフィードチェンに良好に引継がれて脱穀が継続されるようにすることである。【解決手段】脱穀装置(3)に刈取穀稈を供給するフィードチェン(12B)のフィードチェン速度(VF)を変速制御するフィードチェン用油圧式無段変速装置(10)と、刈取穀稈を脱穀装置(3)まで搬送する刈取搬送装置(34)の搬送速度(VH)を変速制御する刈取油圧式無段変速装置(66)を設け、走行装置の走行速度(V)が所定の第二低速値(V02)を超える状態においては、フィードチェン速度(VF)を刈取搬送速度(VH)に応じて変速制御するとともに、走行速度(V)が第二低速値(V02)以下である状態では、フィードチェン速度(VF)を走行速度(V)に応じて変速制御する。【選択図】図12
