PROBLEM TO BE SOLVED: To provide a combine harvester which can operate a grain straw-conveying means with a convey-driving electric motor at a proper speed, and can improve the conveying performance of the grain straw-conveying means.SOLUTION: Provided is the combine harvester which includes a travel machine frame having a travel portion operated with an engine 14, a reaping blade device for cutting the foots of grain straws, a grain straw-conveying means for conveying the cut grain straws, and a belt transmission mechanism having a tension clutch, and in which the rotation force of the engine is transmitted to the reaping blade device, characterized by disposing a convey-driving electric motor 92 for operating the grain straw-conveying means, a reaping clutch sensor 293 for detecting the engaging or disengaging operations of the tension clutch, and conveying speed sensors 291, 292 for detecting the grain straw-conveying speed of at least one of the grain-conveying upstream and downstream sides of the grain straw-conveying means, and enabling to control the operation of the convey-driving electric motor 92 on the basis of the detection result of the reaping clutch sensor 293 and the detection result of the conveying speed sensors 291, 292.COPYRIGHT: (C)2010,JPO&INPIT【課題】搬送駆動用電動モータによって穀稈搬送手段を適正速度で作動でき、穀稈搬送手段の搬送性能を向上できるようにしたコンバインを提供するものである。【解決手段】エンジン14によって作動する走行部を備えた走行機体と、穀稈の株元を切断する刈刃装置と、切断された前記穀稈を搬送する穀稈搬送手段と、テンションクラッチを有するベルト伝動機構とを備え、刈刃装置にエンジンの回転力を伝達するように構成してなるコンバインにおいて、穀稈搬送手段を作動する搬送駆動用電動モータ92と、テンションクラッチの入り切り操作を検出する刈取クラッチセンサ293と、穀稈搬送手段の穀稈搬送上流側又は下流側の少なくともいずれか一方の穀稈搬送速度を検出する搬送速度センサ291,292とを備え、刈取クラッチセンサ293の検出結果と搬送速度センサ291,292の検出結果とに基づき、搬送駆動用電動モータ92を作動制御可能に構成した。【選択図】図7
