Lubrication arrangement for a drive axle of a haul vehicle

摘要

A drive axle assembly is provided that improves lubrication to the components of the drive axle assembly. As the wheel differential rotates, lubricant is splashed and lubricates bearings and other associated components of the differential assembly. In addition, lubricant is pumped by rotation of the first and second spur gears and is fed to the radial face of a forward bearing through a lubrication passage through a plurality of passages.

主权项

1. A drive axle assembly, comprising:
a housing; an input shaft extending into the housing and disposed about an axis of rotation; a first spur gear disposed about the input shaft and the axis of rotation, the first spur gear configured to provide power to a first wheel differential, the first wheel differential including a ring gear; a second spur gear disposed about a pinion shaft, the pinion shaft configured to provide power to the first wheel differential via a pinion gear, the second spur gear drivingly coupled to the first spur gear; a forward bearing positioned forward and adjacent the first spur gear, the bearing disposed about the input shaft and supporting the input shaft for rotation within the housing; and a rearward bearing positioned rearward and adjacent the first spur gear, the bearing disposed about the input shaft and supporting the input shaft for rotation within the housing, wherein the first and second spur gears pump a lubricant from the housing to a lubrication passage and supply the lubricant to a radial face of at least one of the forward and the rearward bearing.