PROBLEM TO BE SOLVED: To provide a work vehicle capable of preventing as far as possible, accumulation of mud on a ground part of a travel wheel.SOLUTION: A work vehicle comprises: a travel vehicle body 2 to which a ground work device 4 can be attached and travel wheels 10 each including a rim part 410 attached to the travel vehicle body 2 and formed into an annular shape of a pipe material, and a tire part 420 for covering the rim part 410. The tire part 420 of the travel wheel 10 comprises: a ground part 440 on which plural lugs 431, 432 are formed and a tire width maximum part 450 continuously formed with the ground part 440, and subject to the minimum ground pressure.. A position of the tire width maximum part 450 and a position of a tube center Q of the rim part 410 almost match in a radial direction of the travel wheel 10, and a mud discharge surface 500 having a sharp slope is formed from a skirt part of each lug 430 on the ground part 440 to the tire width maximum part 450.SELECTED DRAWING: Figure 6ACOPYRIGHT: (C)2017,JPO&INPIT【課題】走行車輪の接地部に泥土が溜まることを可及的に防止することのできる作業車両を提供すること。【解決手段】対地作業装置4を取付可能な走行車体2と、走行車体2に取付けられ、管材により環状に形成されたリム部410と、リム部410を被覆するタイヤ部420とを有する走行車輪10とを備える。走行車輪10のタイヤ部420は、複数のラグ431,432が形成された接地部440と、接地部440に連続して形成され、接地圧が最小となるタイヤ幅最大部450とを有し、タイヤ幅最大部450の位置とリム部410の管中心Qの位置とが走行車輪10の径方向において略一致するとともに、接地部440における各ラグ430の裾部からタイヤ幅最大部450にかけて、急勾配の泥排出面500が形成される。【選択図】図6A
