Patent ID: 7270200
Filing Date: 2007-09-18
Classification: B62D

Abstract:
1. A working vehicle comprising: a first hydrostatic transmission including a first hydraulic pump, a first hydraulic motor, and a first trunnion shaft for regulating a drive speed of the first hydraulic motor by varying discharge oil pressure fed from the first hydraulic pump into the first hydraulic motor; a second hydrostatic transmission including a second hydraulic pump set beside in the forward or rearward direction, which is an advancement direction of a vehicle, with respect to the first hydraulic pump, and provided with a second trunnion shaft for regulating a drive speed of the second hydraulic motor by varying discharge oil pressure fed from the second hydraulic motor and the second hydraulic pump into the second hydraulic motor; a first drive wheel driven and rotated in the forward drive direction or reverse drive direction by the first hydrostatic transmission and disposed in the left direction when being faced toward the drive direction of the vehicle; a second drive wheel driven and rotated in the forward drive direction or reverse drive direction by the second hydrostatic transmission and disposed in the right direction when being faced toward the drive direction of the vehicle; a first steering operating tool and a second steering operating tool each disposed in the cross direction, when being faced toward the drive direction of the vehicle, in order to independently operate the first and second trunnion shafts, respectively; a first relay shaft and a second relay shaft provided between the first and second trunnion shafts; first connection members for connecting the first steering operating tool and the first relay shaft with each other; second connection members for connecting the first relay shaft and the first trunnion shaft with each other; third connection members for connecting the second steering operating tool and the second relay shaft with each other; and fourth connection members for connecting the second relay shaft and the second trunnion shaft-with each other.