PROBLEM TO BE SOLVED: To provide a crawler-traveling working vehicle improving strength for the supporting positions of rocking links by a simple constitution, reducing the labor of processing by using the less number of parts and also while avoiding the enlargement of constituting members, including a high strength rocking link-supporting structure.SOLUTION: This crawler-traveling working vehicle is provided by supporting a crawler-traveling device 1L as freely lifting up and down through a front and rear pair of the rocking links 11, 12, extending side linking frames 21 to more lateral outside of a machine body than the presenting positions of right and left main frames 20, and mounting a supporting bracket 3 formed with pivoting parts becoming the rocking fulcrums of the rocking links 11, 12 over the positions of the side linking frames 21 extended to the lateral outsides of the machine body and each of the right and left main frames 20.COPYRIGHT: (C)2011,JPO&INPIT【課題】簡単な構成で揺動リンクの支持箇所に対する強度を高め、少ない部品点数で加工工数も少なく、かつ構成部材の大型化を避けながら高強度の揺動リンク支持構造を備えたクローラ走行作業車を得る。【解決手段】前後一対の揺動リンク11,12を介してクローラ走行装置1Lを昇降自在に支持させ、横連結フレーム21を左右のメインフレーム20の存在箇所よりも機体横外側へ延出し、この横連結フレーム21の機体横外側への延出箇所と左右の各メインフレーム20とにわたって、揺動リンク11,12の揺動支点となる枢支部が形成された支持ブラケット3を取り付けてある。【選択図】図3
