Header hydraulic float system

Details Header hydraulic float system Header hydraulic float system

2007-05-29

2007-05-29

Kovács, Árpád Fábián (Department: 3671)

Harvesters

Motorized harvester

With condition-responsive operation

Reexamination Certificate

active

11125419

ABSTRACT:
In an agricultural combine, a header float system using a floating header having a frame, a support member supporting the frame from the ground, and a suspension variably supporting the frame from the combine. The suspension comprises a sub-frame removable attaching to the combine, links movably attaching the frame and the sub-frame, and one or more float cylinders moveably supporting the frame from the sub-frame. A float circuit connects to the float cylinder, and a float valve connects the float circuit to a main hydraulic circuit. A pressure sensor connects to the float circuit, and a controller communicates with the float valve and the pressure sensor. The controller maintains pressure in the float circuit at a target value by continuously reading the pressure sensor and commanding the float valve to add or subtract hydraulic fluid in the float circuit until pressure equals the target value.

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European Search Report, Aug. 11, 2006, 7 Pages.

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