PROBLEM TO BE SOLVED: To provide a work vehicle that is easier to escape even when the work vehicle sinks in a field as compared with a conventional one.SOLUTION: A seedling transplanter 1 comprises: a traveling vehicle body 2 having a pair of left and right front wheels 3L, 3R and a pair of left and right rear wheels 4L, 4R a steering handle 8 for steering the pair of left and right front wheels 3 L, 3R and a planting device 12 detachably connected to the traveling vehicle body 2 for performing work in a field. When the pair of left and right front wheels 3L, 3R are steered by the steering handle 8, the fact that the pair of left and right front wheels 3L, 3R have reached a straight advancing position is transmitted to the steering handle 8 through an impact generated by fitting of a steel ball 112 and a recess 100.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2017,JPO&INPIT【課題】圃場において沈没状態になった場合でも従来よりも脱出し易い作業車両を提供すること。【解決手段】左右一対の前輪3L、3Rと後輪4L、4Rを有する走行車体2と、左右一対の前輪3L、3Rを操舵するステアリングハンドル8と、走行車体2に着脱可能に連結された、圃場での作業を行う植付装置12と、を備えた苗移植機1であって、左右一対の前輪3L、3Rがステアリングハンドル8により操舵される際、左右一対の前輪3L、3Rが直進位置にきたことを、鋼球112と凹部100との嵌合により発生する衝撃がステアリングハンドル8に伝達される構成である。【選択図】図3
