PROBLEM TO BE SOLVED: To increase the volume of a grain tank and reduce the cost of manufacturing a drivers seat.SOLUTION: In this combine harvester, a steering part (3) is provided at the front part of a traveling undercarriage (1), and a grain tank (5) is provided behind the steering part (3). The steering part (3) is provided with a seat face part (10) on which the driver is seated. A front side expansion part (5a) that expands toward the steering part (3) is provided above the front side of the grain tank (5). The front side expansion part (5a) is provided with a seatback part (5e) that supports the upper part of the drivers body seated on the seat face part (10). The seatback part (5e) includes a backrest face part (5c) formed planely, and side support parts (5b, 5b) biased respectively to the right and left of the backrest face part (5c) and expanding to the front side beyond the backrest part (5c).COPYRIGHT: (C)2013,JPO&INPIT【課題】グレンタンク容積を拡大し、操縦席の製造コスト低減を低減する。【解決手段】走行車台(1)の前部に操縦部(3)を設け、該操縦部(3)の後方にグレンタンク(5)を設けたコンバインにおいて、前記操縦部(3)には操縦者が着座する座面部(10)を設け、前記グレンタンク(5)の前側上部に前記操縦部(3)側へ膨出する前側膨出部(5a)を形成し、該前側膨出部(5a)には、前記座面部(10)に着座した操縦者の上体を支持するシートバック部(5e)を形成し、シートバック部(5e)は、平面的に形成された背もたれ面部(5c)と、該背もたれ面部(5c)の左右に夫々偏倚し、背もたれ面部(5c)よりも前側に張出したサイドサポート部(5b,5b)とを備える。【選択図】図2
