PROBLEM TO BE SOLVED: To improve the operability for straight travelling and turning traveling with a small simple mechanism in a traveling vehicle which is provided with a transmission device for straight traveling which transmits a motive power to left and right traveling parts for supporting a travel machine body, a transmission device for turning traveling which reversely rotatingly transmits a motive power to the left and right traveling parts, an operation unit for shifting the transmission device for straight traveling, and an operation unit for turning the transmission device for turning traveling.SOLUTION: A shift control body 81 is rotatably disposed around a shift axis line X and a turning control body 82 is disposed around a turning axis line Y orthogonal to the shift axis line X at a turning input axis 72 rotated by the operation unit for turning. Both of them are configured to be interlocked with the operation unit for shifting and to be tiltingly rotated around the respective axis lines. The transmission device for straight traveling is shiftingly operated by a slider member 97 for shifting which is slidably engaged with a circular cum 81a disposed in the shift control body, and the transmission device for turning traveling is shiftingly operated by a slider member 106 for turning which is slidably engaged with the circular cum 82a disposed in the turning control body.COPYRIGHT: (C)2009,JPO&INPIT【課題】走行機体を支持する左右の走行部に動力伝達する直進走行用変速装置と,前記左右の走行部に動力を逆回転伝達する旋回走行用変速装置と,前記直進走行用変速装置の変速用操作具と,前記旋回走行用変速装置の旋回用操作具を備えて成る走行車両において,その直進及び旋回走行の操作性を簡単で小型の機構にて向上する。【解決手段】旋回用操作具にて回転する旋回入力軸72に,変速制御体81を変速軸線Xの回りに回転自在に設けるとともに,旋回制御体82を前記変速軸線Xに直交する旋回軸線Yの回りに設けて,前記変速用操作具に連動してその各々における軸線の回りに傾き回転する構成にし,前記変速制御体に設けた円形カム81aに摺動自在に係合する変速用滑り子部材97により前記直進走行用変速装置を変速作動し,前記旋回制御体に設けた円形カム82aに摺動自在に係合する旋回用滑り子部材106により前記旋回走行用変速装置を変速作動する。【選択図】図5
