Header height control system for an agricultural harvester

a technology for harvesters and headers, applied in the direction of mowers, agriculture tools and machines, etc., can solve the problems of less than optimal crop cut, little to no user adjustment of the position of the emitter and receiver, and the inability to optimize crop recovery, so as to optimize crop recovery and minimize lapse in time
US20150195991A1Inactive Publication Date: 2015-07-16CNH IND AMERICA LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
CNH IND AMERICA LLC
Publication Date
2015-07-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

An improved automatic height adjustment system for use with a header of an agricultural harvester is provided. The system includes apparatus and methods utilizing detection of a light beam at or near the skid plate of a header to adjust the height of the header relative to the ground surface. The apparatus includes an emitter for emitting a beam of light to a receiver. An apertured sensor guide is positioned between the emitter and the receiver. The sensor guide is in communication with a controller. If the body of the sensor guide is detected as blocking passage of light to the receiver then the controller operates an extensible actuator to raise or lower the header relative to the ground surface. The system provides rapid header height adjustment in response to detected changes in elevation of the skid plate as the harvester traverses a crop field.
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Description

BACKGROUND

[0001] The subject application relates generally to headers for agricultural harvesters. In particular, the subject application relates to an improved automatic header height control system.

[0002] Agricultural harvesters such as combine harvesters are well known apparatuses for harvesting grain crops. An agricultural harvester is typically a self-propelled vehicle which includes a feederhouse and mechanisms downstream of the feederhouse for separating grain from other crop material. A header is attached to the front of the harvester and includes mechanisms for cutting crop, gathering crop and delivering crop to the harvester's feederhouse. A typical crop cutter includes knives which shears crop near the ground. After cutting, the crop is gathered e.g., by a harvesting reel which feeds the cut crop to a conveyor system that transports the cut crop to the harvester's feederhouse.

[0003] As an agricultural harvester passes over the ground surface, it oftentimes encounters substan...

Claims

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