Patent ID: 6786289
Filing Date: 2004-09-07
Classification: B60K

Abstract:
A skid steer vehicle, comprising:a chassis having first and second sidewalls; an engine mounted to the chassis and having at least first and second hydraulic pumps; and first and second drive systems, disposed adjacent to the first and second sidewalls, respectively, each drive system including: a hydraulic motor including an output shaft with an axis of rotation; a gearbox coupled to the hydraulic motor and including a first reduction gear set driven by the hydraulic motor; a driveshaft having an axis of rotation, the driveshaft extending from the gearbox and having a first end disposed forward of the gearbox and a second end disposed rearward of the gearbox; a first axle assembly including a first axle housing coupled to the first end of the driveshaft, a second reduction gear set and a first axle that extends laterally outward away from the first axle housing, wherein the first axle housing houses at least the second reduction gear set; a second axle assembly including a second axle housing coupled to the second end of the driveshaft, a third reduction gear set and a second axle that extends laterally outward away from the second axle housing, wherein the second axle housing houses at least the third reduction gear set; and a wheel driven by one of the first and second axles; wherein the hydraulic motor of the first drive system is fluidly coupled to the first hydraulic pump to be driven thereby and further wherein the hydraulic motor of the second drive system is fluidly coupled to the second hydraulic pump to be driven thereby, and wherein the first reduction gear set includes a speed-reducing planetary gear set and a speed-reducing spur gear set.