PROBLEM TO BE SOLVED: To provide a combine-harvester capable of setting the driving speed of a feed chain arbitrarily for supplying a proper amount of cereal stalk to a thresher.SOLUTION: There are independently provided a hydraulic motor (100) for driving a feed chain (12B) without driving a travel device (2) and a reaping device (4), and a hydraulic pump (101) for feeding oil to the hydraulic motor (100). Moreover, individual ports on an exit side and an entrance side of the hydraulic pump (101) and the individual ports on the entrance side and the exit side of the hydraulic motor (100) are connected by oil passages on an oil feed side and an oil return side thereby to form a closed circuit (102), and the oil passage on the oil feed side in the closed passage (102) is equipped with a flow control valve (103) for changing an oil amount to be fed from the hydraulic pump (101) to the hydraulic motor (100). Moreover, the closed passage (102) is equipped with a directional switching valve (104) for switching an oil feeding direction from the hydraulic pump (101) to the hydraulic motor (100) to be a reverse direction.COPYRIGHT: (C)2016,JPO&INPIT【課題】適量の穀桿を脱穀装置に供給するためにフィードチェンの駆動速度を任意に設定できるコンバインを提供する。【解決手段】走行装置(2)および刈取装置(4)を駆動することなくフィードチェン(12B)を駆動する油圧モータ(100)と油圧モータ(100)へ送油する油圧ポンプ(101)を独立して設ける。また、油圧ポンプ(101)の出口側および入口側の各ポートと油圧モータ(100)の入口側および出口側の各ポートを送油側および返油側の油路で接続して閉回路(102)を形成し、閉回路(102)における送油側の油路に、油圧ポンプ(101)から油圧モータ(100)への送油量を変更する流量制御弁(103)を設ける。また、閉回路(102)に、油圧ポンプ(101)から油圧モータ(100)への送油方向を逆方向に切り換える方向切換弁(104)を設ける。【選択図】図10
