| 摘要 |
PROBLEM TO BE SOLVED: To provide an agricultural working vehicle having a pair of right and left crawler type traveling devices which can travel with a simple structure so that a vehicle body is horizontal in the right-and-left direction irrespective of unevenness of the ground, a crawler belt is evenly landed, and the traveling resistance by the mud is less easily generated in an ill-drained paddy field. SOLUTION: A crawler drive wheel 11 of the right and left crawler type traveling devices 10 is turnably supported on one end side in the longitudinal direction of a vehicle body frame 3 via a transmission case 8. A truck frame 12 of the right and left crawler type traveling devices 10 is supported on the other end side in the longitudinal direction of the vehicle body frame 3 in a vertically oscillating manner around the axis 28a. Free end sides of the right and left truck frames 12 are connected to the vehicle body frame 3 in an elevating/lowering manner by hydraulic cylinders 20, and the hydraulic cylinders 20 are communicated with each other via a communication passage 30 so that the free end sides of the right and left truck frames 12 are elevated/lowered in an opposite direction to the vehicle body frame 3.
|
