A non-zero caster angle for the rear axle swivel caster wheels on a self-propelled agricultural harvesting machine wherein steering is accomplished by varying speed and/or direction of forward drive wheels. The non-zero caster angle may be fixed or an adjuster mechanism may be provided to allow adjustment within a range of caster angles. The adjuster mechanism incorporates a fixed portion connected to the tractor frame and a pair of rotating portions, one connected to each caster wheel which allows rotation of the caster axis in a plane parallel to the machine longitudinal axis. Also disclosed is an actuator mechanism for providing powered adjustment of the caster angle, even including a control system for active caster angle adjustment.
Self-propelled windrower tailwheel non-zero caster for stability
2015-10-27
Patent
Elektronische Ressource
Englisch
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |
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