PROBLEM TO BE SOLVED: To provide a combine that independently performs the variable speed drive of a traveling device and a reaping device, and the variable speed drive of the feed chain of a threshing device, in which the conveyance speed of the feed chain is automatically changed according to the variation of the amount of reaped grain culm with the change of a reaping travelling speed, and thereby the reaping harvest work can be continued smoothly.SOLUTION: A combine is provided with a reaping first hydraulic continuously variable transmission (66) for performing variable speed drive of a traveling device (2) and a reaping device (4), and a second hydraulic continuously variable transmission (10) for use in the variable speed drive of a feed chain (12B) provided in a threshing device (3). The combine is also provided with a gearshift lever position sensor (16S) for detecting a gear position of a gearshift lever (16) to shift gears of the first hydraulic continuously variable transmission (66), and a control device (85) for performing speed control of the second hydraulic continuously variable transmission (10) based on detection results of the gearshift lever position sensor (16S).COPYRIGHT: (C)2015,JPO&INPIT【課題】走行装置と刈取装置の変速駆動と、脱穀装置のフィードチェンの変速駆動を独立して行うコンバインにおいて、刈取走行速度の変更に伴う刈取穀稈量の変動に応じてフィードチェンの搬送速度が自動的に変更されるものとし、刈取収穫作業を円滑に継続できるようにする。【解決手段】走行装置(2)と刈取装置(4)を変速駆動する刈取第1油圧式無段変速装置(66)と脱穀装置(3)に備えたフィードチェン(12B)の変速駆動用の第2油圧式無段変速装置(10)を設けたコンバインにおいて、第1油圧式無段変速装置(66)を変速操作する変速レバー(16)の変速位置を検出する変速レバー位置センサ(16S)を設け、変速レバー位置センサ(16S)の検出結果に基づいて第2油圧式無段変速装置(10)を変速制御する制御装置(85)を設ける。【選択図】図12
