PROBLEM TO BE SOLVED: To enable a semi-crawler type working vehicle to travel on a road by bringing up and supporting right and left crawler traveling devices while preventing the drop of mud.SOLUTION: The semi-crawler type working vehicle equipped with right and left front wheels present at the front side part of a machine body of the working vehicle, and the right and left crawler traveling devices present at the rear part of the machine body is constituted as follows. A lift arm for lifting and lowering the implement, and a three-point link mechanism for connecting the implement are installed in the rear part of the machine body. Right and left bringing-up rods long in the front and rear direction are attached to right and left lower links of the three-point link mechanism, and right and left grounding wheel bodies are installed in the front side positions of the right and left bringing-up rods protruded frontward from the front terminal parts of the right and left lower links. When the right and left lowering links are turned upward by the right and left lift arms, the right and left crawler traveling devices are supported to be floated from the ground by the right and left grounding wheel bodies of the right and left bringing-up rods.COPYRIGHT: (C)2012,JPO&INPIT【課題】セミクローラ型作業車両において、左右クローラ走行装置を持ち上げ支持し、泥の落下を防止しながら路上走行をすることを課題とする。【解決手段】作業車両の機体前側部には左右前輪を、機体後部には左右クローラ走行装置を設けたセミクローラ型作業車両において、機体後部に作業機昇降用のリフトアーム及び作業機連結用の三点リンク機構を設け、該三点リンク機構の左右ロワーリンクに、前後方向に長い左右持ち上げ棒を取り付け、左右ロワーリンクの前端部よりも前方へ突出する左右持ち上げ棒の前側部位に左右接地輪体を設け、左右リフトアームにより左右ロワーリンクを上方へ回動させると、左右持ち上げ棒の左右接地輪体により左右クローラ走行装置を地面から浮上させて支持することを特徴とするセミクローラ型作業車両とする。【選択図】図2
