PROBLEM TO BE SOLVED: To solve a problem with a conventional agricultural working implement with a ground wheel and a working device attached to a tool bar for transmitting the rotation power from the ground wheel to the drive shaft, wherein the ground wheel cannot be sufficiently lowered in the high ridge work using the ground wheel for low-ridge work so that the ground wheel is floated from the ground surface and the grounding capability is impaired.SOLUTION: A support body 110 for supporting the ground wheel 33 to the tool bar 15 includes: a first support body 111 having a power take-out part 119 for taking out the rotation power from the ground wheel 33 at a prescribed position above the ground wheel 33 and a second support body 112 for displacing and supporting the power take-out part 119 in one vertical direction above or below the tool bar 15 in addition to a pressing mechanism 116 for energizing the ground wheel 33 journaled to the lower end downward to a prescribed lower-limit position from the tool bar 15. The support body also includes an inverting displacement structure 99 which can change the height of the ground wheel 33 by displacing and supporting the power take-out part 119 in the other direction below or above the tool bar 15 by the inverting operation of at least part of the second support body 112.COPYRIGHT: (C)2012,JPO&INPIT【課題】従来より、ツールバーに接地輪と作業装置とを取り付け、その駆動軸に接地輪からの回転動力を伝達する農用作業機では、低畦作業用の接地輪で高畦作業を行うと、接地輪が十分に下降できずに接地面から浮いて接地性が悪化する、という問題があった。【解決手段】ツールバー15に接地輪33を支持する支持体110は、下端部に軸支する該接地輪33をツールバー15より所定の下限位置まで下方付勢する押圧機構116に加え、該接地輪33の所定上方位置で該接地輪33からの回転動力を取り出す動力取出部119を備える第一支持体111と、該動力取出部119をツールバー15より上下一方に変位支持する第二支持体112とから構成し、該第二支持体112の少なくとも一部の上下反転操作により、動力取出部119をツールバー15より上下他方に変位支持して接地輪33の高さを変更可能とする反転変位構造99を設けた。【選択図】 図5
