PROBLEM TO BE SOLVED: To provide a steering angle detection structure of a working machine with high reliability by avoiding a failure, etc. by rationally setting a mounting position of a steering angle sensor, while making the most of a merit to constitute the steering angle sensor by a single sensor.SOLUTION: The steering angle sensor 47 for detecting steering angles of front wheels and a steering member 41 are linked by a linking mechanism B. The linking mechanism B is constituted of a linking rod 48 extended backward from the steering member 41 and a rotary linking shaft 49 of a vertical direction attitude to transmit an operation of the linking rod 48. The steering angle sensor 47 is linked with an upper end part of the rotary linking shaft 49.COPYRIGHT: (C)2010,JPO&INPIT【課題】単一センサで操向角度センサを構成できる良さを生かしながら、操向角度センサの取付位置を合理的に設定して、故障等を未然に回避して信頼性の高い作業機の操向角検出構造を提供する。【解決手段】前輪の操向角度を検出する操向角度センサ47と繰向部材41とを連係機構Bによって連係する。連係機構Bを、繰向部材41より後方に延出された連係ロッド48と、その連係ロッド48の作動を伝達する上下向き姿勢の回転連係軸49とで構成し、操向角度センサ47を前記回転連係軸49の上端部に連係させてある。【選択図】図3
