Auxiliary axle for an agricultural harvester during road transport

摘要

An agricultural harvester includes a chassis and a feeder housing pivotally mounted to the chassis. The agricultural harvester is characterized in that an axle assembly is pivotally mounted to the feeder housing. A hydraulic actuator is coupled with the axle assembly for pivotally moving the axle assembly in upward and downward directions from the feeder housing. A road mode switch provides a first output signal indicative of a field mode and a second output signal indicative of a road mode. A controller is coupled with the road mode switch and the hydraulic actuator. The controller receives the second output signal from the road mode switch and controls the hydraulic actuator, whereby the hydraulic actuator provides a substantially constant down force between the axle assembly and a ground surface.

主权项

1. An agricultural harvester, comprising:
a chassis; a feeder housing pivotally mounted to said chassis; an axle assembly pivotally mounted to said feeder housing, said axle assembly including at least one wheel; a hydraulic actuator coupled with said axle assembly for pivotally moving said at least one wheel in upward and downward directions from said feeder housing; a road mode switch providing a first output signal indicative of a field mode and a second output signal indicative of a road mode; and a controller coupled with each of said road mode switch and said hydraulic actuator, said controller receiving said second output signal from said road mode switch and controlling said hydraulic actuator, whereby said hydraulic actuator provides a substantially constant down force between said at least one wheel and a ground surface.