Auxiliary axle for an agricultural harvester during road transport

摘要

An agricultural harvester (10) includes a chassis (12) and a feeder housing (20) pivotally mounted to the chassis (12). The agricultural harvester (10) is characterized in that an axle assembly (80) is pivotally mounted to the feeder housing (20). A hydraulic actuator (98) is coupled with the axle assembly (80) for pivotally moving the axle assembly (80) in upward and downward directions from the feeder housing (20). A road mode switch (108) provides a first output signal indicative of a field mode and a second output signal indicative of a road mode. A controller (70) is coupled with the road mode switch (108) and the hydraulic actuator (98). The controller (70) receives the second output signal from the road mode switch (108) and controls the hydraulic actuator (98), whereby the hydraulic actuator (98) provides a substantially constant down force between the axle assembly (80) and a ground surface (118).