Integrated splitter gearbox for four wheel drive tractors

摘要

A splitter gearbox 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 is mounted to the rear axle housing to allow the sharing of a common oil sump. The front and rear axles of the tractor are driven from a single hydrostatic motor associated with a gear drive system that provides a shaft extending forwardly and rearwardly out of the splitter gearbox to drive, respectively, the front and rear axles of the tractor. An auxiliary pump drive is mounted to the side of the splitter gearbox and driven from an idler gear appropriately positioned within the splitter gearbox.