Cnh Industrial America LLC

Cnh America LLC

Mark Dean Layton

Philip J Ehrhart

Jeffrey Brown Fay, Ii

Cecil Sudbrack

Todd B Pierce

Martin Jean Roberge

Robert L Fackler

Steven Carson Young

Donald L Osborne

Gregory T Fasick

Madhu Pankaj

Luke J Harris

Roger D Huggard

Donald R Whitenight

The disclosure relates to a steering control system useful for providing stable control during high-speed operation of harvesters, such as self-propelled windrowers. The steering control system utilizes a sensor for detecting and regulating a position of a single steering cylinder associated with a first caster, a damper being free of sensing and providing passive damping to the second caster.

Steering control system for harvester and methods of using the same

An autoguidance interface for a hydraulic steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjustment to a control input shaft to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. The control input shaft is rotatable and axially moveable. A hydraulic steering motor is operably connected to the input shaft to effect control input shaft rotation. Rotation of the hydraulic steering motor is selectively managed by a steering control valve attached to a cab-mounted windrower steering wheel or a proportional steering valve managed by the autoguidance system. A selector valve controls the active steering input. An emergency disengagement positions the selector valve to restore manual control by the steering wheel.

Windrower autoguidance hydraulic steering interface

A steering system for a differential steered self-propelled agricultural windrower, windrower speed and direction controlled by adjusting the pivotal position of rotatable pintel arms to control the output of a pair of tandem-mounted hydraulic drive pumps and provide motive power for the windrower. A control input shaft that is both rotatable and axially moveable manages the relative positioning of the pintel arms. A hydraulic steering motor is operably connected to the input shaft. Rotation of the hydraulic steering motor is managed by a steering control valve attached to a cab-mounted windrower steering wheel.

Windrower steering system

A conditioner roll tread pattern comprising a plurality of equally circumferentially spaced ribs separated by grooves extending across the axial length of the conditioner roll. The ribs are angled relative to the axial centerline, either with a fixed positive/negative angle or a continuously varying angle alternating between positive and negative extremes. The conditioner roll is configured to work in conjunction with a paralley disposed roll of similar tread pattern configuration, reversed end-for-end so that the ribs of one roll intermesh with the grooves of the adjacent roll. The location of the transition points at which the angle reverses along the axial length are coordinated with the transverse locations of converging and diverging crop flows being discharged from a forwardly disposed rotary disc cutterbar in a manner that results in a crop mat having more uniform thickness being discharged from the conditioner.

Conditioner rolls having tread pattern coordinated with cutterbar crop discharge pattern

Mower disc

Growing community of inventors

Lititz, PA, United States of America

Mark Dean Layton