PROBLEM TO BE SOLVED: To provide a work machine having high durability.SOLUTION: A work machine includes: a cover part that is provided in a support frame and covers an upper part of a tilling rotor； a ground leveling body provided in the cover part； and an apron control mechanism that is installed between the cover part and the ground leveling body, and can switch between a pressure mode of inhibiting upward rotation of the ground leveling body, and a non-pressure mode of not inhibiting the upward rotation of the ground leveling body. The apron control mechanism includes: a first arm part； a second arm part having a projection part having a hole part； a main body part that is provided in the cover part, rotatably supports the first arm part and the second arm part, and supports a wire outlet part； and a wire of which one end is connected to the hole part, and another end is inserted to a hole of the wire outlet part. In a relationship among a first extension line, a second extension line, a locus in which a center point of the hole part rotates around a rotation fulcrum of the second arm part, and a tangent line with respect to the locus, the first extension line substantially matches the second extension line in the pressure mode, and the first extension line substantially matches the tangent line in the non-pressure mode.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】本発明は耐久性が高い作業機を提供することを課題とする。【解決手段】支持フレームに設けられ、耕耘ロータの上方を覆うカバー部と、カバー部に設けられた整地体と、カバー部と整地体との間に架設され、整地体の上方向への回動を妨げる加圧モードと、整地体の上方向への回動を妨げない非加圧モードとを切替可能なエプロン制御機構とを備え、エプロン制御機構は、第１アーム部と、孔部を有する突出部を有する第２アーム部と、カバー部に設けられ、第１アーム部及び第２アーム部を回動可能に支持し、ワイヤ出口部を支持する本体部と、一端が孔部に接続され、他端がワイヤ出口部の孔に挿通されるワイヤとを有し、第１延長線と、第２延長線と、第２アーム部の回動支点に対して孔部の中心点が回動する軌跡と、軌跡に対する接線との関係が、加圧モードでは第１延長線と第２延長線とが略一致し、非加圧モードでは第１延長線と接線とが略一致する。【選択図】図３
