PROBLEM TO BE SOLVED: To provide a work vehicle capable of improving direct advance stability in a field.SOLUTION: A work vehicle 1 includes: a travel vehicle body 2 depth detection members 114 a steering member 32 an automatic steering device 110 and a control device 150. The travel vehicle body 2 can attach a work device 60 at a rear part, the work device performing ground work in a field. The depth detection members 114 are arranged at an interval in a direction crossing a travel direction of the travel vehicle body 2 and detect a field depth in the travel direction of the travel vehicle body 2. The steering member 32 receives operation to steer a travel wheel 4 of the travel vehicle body 2. The automatic steering device 110 steers the travel wheel 4 and matches the travel direction to direct advance. The control device 150 controls the automatic steering device 110 to detect corrugation of the field in the travel direction on the basis of difference between depths detected by the depth detection members 114, and steers the travel wheel 4 to a direction avoiding the corrugation.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】圃場における直進安定性を向上させることができる作業車両を提供すること。【解決手段】作業車両1は、走行車体2と、深度検出部材114と、操舵部材32と、自動操舵装置110と、制御装置150とを備える。走行車体2は、圃場での対地作業を行う作業装置60を後部に取り付け可能である。深度検出部材114は、走行車体2の走行方向と交差する方向に間隔をあけて設けられ、走行車体2の走行方向における圃場の深度をそれぞれ検出する。操舵部材32は、走行車体2の走行輪4を操舵する操作を受け付ける。自動操舵装置110は、前記走行輪4を操舵して進行方向を直進に合わせる。制御装置150は、自動操舵装置110を制御し、深度検出部材114のそれぞれが検出した深度の差に基づいて走行方向における圃場の起伏を検出し、かかる起伏を避ける向きへ走行輪4を操舵する。【選択図】図8
