Harvesters – Cutting – Rotating cutting-reel type
Reexamination Certificate
2008-04-08
2008-04-08
Kovács, Árpád Fábián (Department: 3671)
Harvesters
Cutting
Rotating cutting-reel type
Reexamination Certificate
active
07353644
ABSTRACT:
A control system for a cutting reel unit includes a height-of-cut adjusting system and a reel-to-bedknife clearance adjusting system. The height-of-cut adjusting system includes a first frame; a second frame; a cutting reel supported by the second frame; a bedknife arranged adjacent to the cutting reel and supported by the second frame; at least one support element arranged to translate along the ground and arranged to support the first frame; and at least one first actuator connected between the first frame and the second frame and arranged to adjust the relative elevation of the second frame with respect to the first frame. The reel-to-bedknife clearance adjusting system includes at least one second actuator operatively connected between the reel and the second frame and a sound detector. Once contact is detected between the reel and bedknife, the adjustment actuators may reverse direction and be energized in a direction that would increase the gap. Contact between the reel and bedknife will continue to be detected until true motion occurs such that a gap is formed between the reel and bedknife. The location where contact between the reel and bedknife is no longer detected is the “zero-gap point.” After true motion has begun, the control system monitors the incremental position sensor data and may command the actuators to increase the gap to a specific final gap position.
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Deere & Company
Kovács Árpád Fábián
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