PROBLEM TO BE SOLVED: To provide a combine capable of carrying out a binding operation well by waste straw processing device without the need of cumbersome manual gear shift operations.SOLUTION: The waste straw processing device can switch the state between a bind processing state and a non-bind processing state. A vehicle speed control means executes a vehicle speed control process of controlling the operation of a gear shift actuator so that the vehicle speed may be increased/reduced to keep the engine load within a set allowable range when the vehicle speed is equal to or less than an upper limit vehicle speed set in advance. Also, the actuator is controlled so that the vehicle speed may be increased/reduced in the mode in which acceleration of the vehicle speed is stopped when the vehicle speed is at the upper limit vehicle speed when the engine load is lower than a set allowable range. When the waste straw processing device is in the bind processing state, the vehicle speed control means sets, as the upper limit vehicle state, a vehicle speed which is lower than that of the non-bind processing state.COPYRIGHT: (C)2010,JPO&INPIT【課題】煩わしい手動による変速操作が不要でありながら、排ワラ処理装置による結束作業を良好に行うことが可能となるコンバインを提供する。【解決手段】結束処理状態と非結束処理状態とに切り換え自在な排ワラ処理装置が備えられ、車速が予め設定された上限車速以下のときにはエンジン負荷が設定許容範囲内となるように車速を増減させ、且つ、エンジン負荷が設定許容範囲よりも低いときに車速が上限車速になる場合には車速の増速を停止させる形態で車速を増減させるように、変速用アクチュエータの作動を制御する車速制御処理を実行する車速制御手段が、上限車速として、排ワラ処理装置が前記結束処理状態である場合には前記非結束処理状態である場合よりも低速の車速を設定する。【選択図】図7
