PROBLEM TO BE SOLVED: To provide a crop harvester which solves a problem that, there exists a crop harvester which uses a traveling wheel at one side of left and right directions as a spike wheel, however, since a conventional spike is protruded over a wide range in axial left and right directions of an external periphery of a traveling wheel, the spike contacts with a foliage part of an unreaped onion in an adjacent ridge, cuts the foliage part, hangs the foliage part, and pulls out the onion halfway.SOLUTION: In a crop harvester, a grounding protrusion (101) for stabilizing a posture of a traveling vehicle body (7) which bites into a farm field is arranged at a traveling wheel (84), the grounding protrusion (101) is arranged while penetrating a rim (84b) of the traveling wheel (84), and a salient part (101a) of the grounding protrusion (101) can be switched to an operation state that the salient part is protruded from an outermost periphery of the traveling wheel (84) and a non-operation state that the salient part is located inside the outermost periphery, thus solving the problem.COPYRIGHT: (C)2015,JPO&INPIT【課題】左右一側の走行輪をスパイク輪とした作物収穫機があるが、従来のスパイクは走行輪の外周の軸方向の広い範囲に亘ってスパイクを突出させているので、隣接条の未収穫玉葱の茎葉部に接触し、茎葉部を切断したり、茎葉部を引っ掛けて玉葱を半端に引き抜いたりするという問題がある。よってこの問題を解決する作物収穫機を提供することが、本発明が解決しようとする課題である。【解決手段】走行車輪(84)に、圃場に噛み込んで走行車体(7)の姿勢を安定させる接地突起(101)を設け、この接地突起(101)を、前記走行車輪(84)のリム(84b)を貫通させて配置すると共に、この接地突起(101)の突出部(101a)が、走行車輪(84)の最外周から突出する作用状態と、最外周よりも内側に位置する非作用状態と、に切替可能であることを特徴とする作物収穫機により上記問題を解決した。【選択図】図4
