Patent ID: 6990808
Filing Date: 2006-01-31
Classification: B60B,B60K,F16H,Y10T

Abstract:
1. An axle driving system, comprising: a housing; a hydrostatic transmission disposed in said housing including an input means, a hydraulic pump driven by said input means, a hydraulic motor driven by pressurized oil from said hydraulic pump, an output means driven by said hydraulic motor, and a center section on which said hydraulic pump and said hydraulic motor are mounted and are fluidly connected with each other; an axle; and a driving gear train disposed in said housing for drivingly connecting said output means of said hydrostatic transmission and said axle; wherein said center section is separably mounted in said housing, said center section has separate first and second portions so that said first portion is provided adjacent to said axle and said second portion is provided away from said axle, a pump mounting surface for mounting said hydraulic pump is provided on said first portion, and a motor mounting surface for mounting said hydraulic motor is provided on said second portion, wherein said pump mounting surface and said motor mounting surface are perpendicular to each other, the rotational axis of said hydraulic pump disposed on said pump mounting surface is substantially vertical, the rotational axis of said hydraulic motor disposed on said motor mounting surface is substantially horizontal, and said first portion and said second portion of said center section are coupled to each other so that a phantom plane including said motor mounting surface intersects with the input means of said hydraulic pump disposed on said pump mounting surface.