Integrated splitter gearbox for four wheel drive tractors

摘要

A splitter gearbox (30) for a four wheel drive, hydrostatically driven tractor integrates both the input drive train and the output drive train into a single gearbox. The splitter gearbox (30) is mounted to the rear axle housing (17) to allow the sharing of a common oil sump. The front and rear axles (12, 17) of the tractor are driven from a single hydrostatic motor (25) associated with a gear drive system that provides a shaft (38) extending forwardly and rearwardly out of the splitter gearbox (30) to drive, respectively, the front and rear axles (12, 17) of the tractor. An auxiliary pump drive (40) is mounted to the side of the splitter gearbox (30) and is driven from an idler gear (43) appropriately positioned within the auxiliary pump drive housing (44). <IMAGE>