Harvester with suspended rear axle

摘要

A combine harvester has a suspension axle assembly supporting the rear end of the chassis of the harvester. Side frames of the chassis direct loading down to a transverse axle through a pair of suspension devices interposed between the side frames and the axle. The suspension devices are resilient and expandable to cushion the chassis and to provide changes in the fore-and-aft attitude of the combine. The suspension devices may be independently operated to tilt the axle relative to the chassis, and provision is made for shifting the axle longitudinally, side-to-side of the chassis to facilitate turning of the steerable rear ground wheels.

主权项

1. A combine harvester comprising:
a chassis having a front end and a rear end; a harvesting header attached to said front end of the chassis; processing mechanism mounted on the chassis for processing crop materials harvested by said header; a pair of driven front wheels supporting said front end of the chassis behind the header; and a suspension axle assembly supporting said rear end of the chassis and including:
a transverse axle vertically swingably attached to said chassis;a pair of ground wheels rotatably mounted at opposite ends of said axle; andsuspension apparatus between said axle and said rear end of the chassis for transferring the load of the rear end of the chassis to said axle and the ground wheels, wherein said suspension apparatus includes a pair of inflatable devices at spaced locations along the length of said axle, said devices being inflatable independently of one another for tilting said axle relative to said chassis.