| 摘要 |
<p>A hydrostatic pump-motor unit (35) including a clutch assembly (43) and a pump-motor portion (45) disposed within a housing assembly (51,55,57). An intermediate drive shaft (21) extends through the entire axial extent of the unit (35) and is surrounded by a hollow shaft member (63). The housing assembly (51,55,57) supports the drive shaft (21) by means of a pair of bearing sets (67,71), and the hollow shaft member (63) is supported relative to the housing assembly by means of a pair of bearing sets (75,79). The pump-motor portion (45) includes an axial piston cylinder barrel (115) surrounding the shaft member (63) and splined thereto. The clutch assembly (43) is operable to selectively clutch and de-clutch the drive shaft (21) and the hollow shaft member (63). Having the drive line extend through the pump-motor unit (35) substantially improves the packaging of the overall drive system.</p> |
