PROBLEM TO BE SOLVED: To make a machine body of a combine harvester compact while an elastic supporting mechanism for elastically supporting a reaping device of the combine harvester is smoothly operated.SOLUTION: In the combine harvester, a reaping lifting cylinder (20) for lifting a leaping device (17) and the elastic supporting mechanism (21) for energizing a reaping device (4) upward are disposed between the reaping device (4) and a machine body frame (1). When a sled body (32) disposed below the reaping device (4) receives the raising force from the unevenness on a field surface, the reaping part (4) is raised and retreated with the raising force and the upward energization of the elastic supporting mechanism (21). The elastic supporting mechanism (21) is disposed under a grain culm support plate (41), the proximal end of the elastic supporting mechanism (21) is connected to the machine body frame (1) and the distal end of the elastic supporting mechanism (21) is connected to the rear end of a connection arm (27) extending rearward from above a vertical support transmission cylinder (11).COPYRIGHT: (C)2012,JPO&INPIT【課題】コンバインの刈取装置を弾性的に支持する弾性支持機構を円滑に作動させるものでありながら、機体をコンパクトに構成する。【解決手段】刈取装置(4)と機体フレーム(1)の間に、刈取装置(17)を昇降させる刈取昇降シリンダ(20)と刈取装置(4)を上昇方向へ付勢する弾性支持機構(21)を設け、刈取装置(4)の下部に設けた橇体(32)が圃場面の凹凸により突き上げ力を受けると、この突き上げ力と弾性支持機構(21)の上方付勢力によって刈取部(4)が上昇退避する構成とし、前記弾性支持機構(21)を穀稈支持板(41)の下方に配置し、該弾性支持機構(21)の基端部を機体フレーム(1)に連結し、該弾性支持機構(21)の先端部を前記縦支持伝動筒体(11)の上部から後方へ延出した連結アーム(27)の後端部に接続する。【選択図】 図1
