CORN HEAD ROW UNIT GEARBOX LUBRICATION

摘要

A corn head row unit gearbox includes an input shaft, that rotates about a first axis of rotation and that drives a set of bevel gears. The bevel gears transfer rotation of the input shaft into rotation of a set of gathering chain output shafts about a second axis of rotation, generally transverse to the first axis of rotation. The gathering chain drive shafts each rotate within a bushing mounted within a frame structure of the gearbox. The frame structure defines a bore that communicates with a bevel gear cavity, in which at least one of the sets of bevel gears rotates, and an interior of the bushings mounted on the gathering chain drive shafts. Rotation of the bevel gears carries lubricant to an inlet aperture on the bore and drives the lubricant through the bore into the bushings.

主权项

1. A harvester row unit gear box, comprising:
a structural housing; an input shaft, rotatably mounted to the structural housing, and rotatable about a first axis of rotation; a first bushing mounted to the structural housing and having an inner surface with a first bushing aperture between a first axial end of the first bushing and a second axial end of the first bushing; a first gathering chain drive shaft rotatably mounted within the first bushing and rotatable about a second axis of rotation generally transverse to the first axis of rotation, to drive a first gathering chain; and a gear train, mounted within a gear train containment area defined by the structural housing, that links the input shaft to the first gathering chain drive shaft to transfer rotation of the input shaft about the first axis of rotation into rotation of the first gathering chain drive shaft about the second axis of rotation, the structural housing defining a first bore, generally aligned with the first bushing aperture in the first bushing to provide fluid communication between the gear train containment area and the inner surface of the first bushing.