PROBLEM TO BE SOLVED: To provide a harvester having a travel machine frame moved at a vehicle speed adapted to the operation load of crop-conveying means, and maintaining the conveyance performance of the crop-conveying means so as to prevent disordered conveyance attitudes of crops or prevent blocking with the crops.SOLUTION: The harvester including a travel machine frame equipped with traveling portions operated by an engine 14, the reaping blade device for cutting the foots of crops planted and standing in a field, crop-conveying means for conveying the crops from which the foots are cut off by the reaping blade device, a vehicle speed sensor 285 for detecting the travel speed of the travel machine frame, and vehicle speed-changing means 112 for changing the travel speed of the travel machine frame, includes: a conveying-driving electric motor 92 for operating the crop-conveying means and a load sensor 313 for detecting the operation load of the crop-conveying means wherein, the vehicle speed-changing means 112 is controlled on the detection result of the load sensor 313, to reduce the travel speed of the travel machine frame, when the operation load of the crop-conveying means 224 increases to or above the set load.COPYRIGHT: (C)2009,JPO&INPIT【課題】作物搬送手段の作動負荷に適応した車速で走行機体を移動でき、作物搬送手段の搬送性能を維持して、作物の搬送姿勢が乱れたり、作物が詰るのを未然に防止できるようにした収穫機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、圃場に植立した作物の株元を切断する刈刃装置と、刈刃装置によって株元が切断された前記作物を搬送する作物搬送手段と、走行機体の移動速度を検出する車速センサ285と、走行機体の移動速度を変更する車速変更手段112とを備えてなる収穫機において、作物搬送手段を作動する搬送駆動用電動モータ92と、作物搬送手段の作動負荷を検出する負荷センサ313とを備え、作物搬送手段224の作動負荷が設定負荷以上に増加したときに、負荷センサ313の検出結果に基づき、車速変更手段112を制御して、走行機体の移動速度を減速するように構成したものである。【選択図】図7
