PROBLEM TO BE SOLVED: To simplify a transmission structure to raising devices and simultaneously enable to smoothly swing up the raising devices without being driven in the reverse direction, in a combine harvester in which two or more raising devices are parallelly and laterally arranged and disposed in the front portion of a reaping portion and supporting the raising devices in a swingable state.SOLUTION: In the raising driving structure of the combine harvester the raising devices 13 are gear-interlocked with a counter shaft 41 laterally spun and supported on the upper portion of the raising devices 13 in a state of swingable up on the axis X of the counter shaft 41 as a center, and a transmission interceptor is disposed in a power transmission system to the raising devices 13, wherein by the interception operation of the transmission interceptor, the transmission of a reverse driving force from the counter shaft 41 to the raising devices 13 by the swinging-up of the raising devices 13 are intercepted.COPYRIGHT: (C)2011,JPO&INPIT【課題】刈取り部の前部に複数の引起し装置を左右に並列配備するとともに、所定の引起し装置を振り上げ揺動可能に支持したコンバインにおいて、引起し装置への伝動構造を簡素化しながら、逆駆動を受けることなく引起し装置を円滑良好に振り上げ揺動できるようにする。【解決手段】引起し装置13を、その上部に横架支承されたカウンタ軸41にギヤ連動するとともに、カウンタ軸41の軸心Xを中心にして振り上げ揺動可能に支持し、引起し装置13への動力伝動系に伝動遮断手段を設け、この伝動遮断手段の遮断作動によって、引起し装置13の振り上げ揺動に伴うカウンタ軸41から引起し装置13への逆駆動力の伝達が遮断されるよう構成する。【選択図】図8
