초록 ▼

A modular hydrostatic transaxle includes an axle module removably connected to a hydrostatic transmission module. The axle module includes a differential connected to a reduction gear train and disposed in an axle casing. A pair of axles are connected to the differential and supported within the axl

A modular hydrostatic transaxle includes an axle module removably connected to a hydrostatic transmission module. The axle module includes a differential connected to a reduction gear train and disposed in an axle casing. A pair of axles are connected to the differential and supported within the axle casing. The hydrostatic transmission module comprises a transmission casing separate from the axle casing and hydraulically connected pump and motor disposed in the transmission casing. The motor output connection includes a shaft piloted to an input drive of the reduction gear train, which constitutes the alignment mechanism of the transmission and axle modules. The pump and motor cylinder barrels are hydraulically connected through the pump and motor block at 90.degree. orientation, and a portion of the pump and motor block forms an inclined surface which supports a face of a thrust bearing. At least one homogeneous low friction bearing strip is confined between the swash plate and the interior portion of the casing. A disconnect mechanism includes a spring that urges a sleeve to engage the output and input shafts. The brake disc is disposed on a distal end of the output shaft and a brake cover is fastened to the outer portion of the axle casing and substantially encloses the brake disc.

대표청구항 ▼

1. A hydrostatic transaxle comprising:an axle module comprising an axle casing, a differential and a reduction gear train connected to said differential, said gear train including an input drive, said differential and gear train disposed in said axle casing; a pair of axles connected to said differe

1. A hydrostatic transaxle comprising:an axle module comprising an axle casing, a differential and a reduction gear train connected to said differential, said gear train including an input drive, said differential and gear train disposed in said axle casing; a pair of axles connected to said differential and supported within said axle casing; a hydrostatic transmission module comprising a transmission casing separate from said axle casing and a hydraulically connected pump and motor disposed in said transmission casing, said pump having an input driving said pump and said motor having an output means drivingly connected to said reduction gear train; said hydrostatic transmission casing removably connected to said axle mechanism casing; said motor output means comprising a shaft piloted to said input drive of said reduction gear train, the piloting of said shaft and input drive constituting the alignment mechanism of said transmission and axle modules; and said axle casing including a recessed portion superimposed on a sleeve extending from said transmission casing and rotatably supporting said motor output means shaft, said sleeve and at least one of said transmission casing and said recessed portion separated by a clearance.