PROBLEM TO BE SOLVED: To provide a combine-harvester, in which the weight of a mowing part and the size of a lifting cylinder are reduced to lower a production cost, by supporting a main cutting blade device and an auxiliary cutting blade device attached to a mowing part, separately by a running machine frame, and enabling the auxiliary cutting blade device to up and down integrally with the mowing part via a connection-release mechanism, thereby to reduce the production cost.SOLUTION: To a running machine frame, there is attached in a vertically rocking manner a mowing part including a main mowing blade device for mowing the ear tips of erect hairs. To the running machine frame, there is also attached through a pair of right and left support arms an auxiliary mowing blade device for mowing off the residual culm of the erect hair having the ear tip cut off by the main mowing blade device. Between the mowing part and the auxiliary mowing blade device, there is interposed a connection-release mechanism for switching the mowing device and the auxiliary mowing blade device into the connected state and the unconnected state.COPYRIGHT: (C)2016,JPO&INPIT【課題】走行機体に、刈取部に取り付けた主刈刃装置と副刈刃装置と別々に支持させるとともに、連結・解除機構を介して副刈刃装置を刈取部と一体的に昇降可能とすることで、刈取部の軽量化や昇降シリンダ等の小型化を実現して、製造コストの低減化を図ること。【解決手段】走行機体に、立ち毛の穂先部を刈り取る主刈刃装置を具備する刈取部を上下揺動自在に取り付ける一方、走行機体に、主刈刃装置により穂先部が刈り取られた立ち毛の残稈を刈り取る副刈刃装置を左右一対の支持アームを介して上下揺動自在に取り付け、刈取部と副刈刃装置との間には、刈取部と副刈刃装置とを連結状態と非連結状態に切り替える連結・解除機構を介設した。【選択図】図1
