Concave adjustment system in a combine harvester twin axial-flow crop processor
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United States of America Patent
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Jul 5, 2022
Grant Date -
Jul 16, 2020
app pub date -
Aug 24, 2018
filing date -
Sep 27, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A combine harvester including a frame and two axial-flow crop processing rotors mounted to the frame. An inner support structure is located between the two rotors and is mounted to the frame by a first linkage. Two outer support structures are located outboard of the two rotors and are mounted to the frame by respective second and third linkages. The inner support structure and two outer support structures carry first and second pluralities of concave grate segments at a radial distance from the respective rotors. A concave adjustment system includes a first actuator coupled to the first linkage which is configured to raise and lower the inner support structure. A second actuator is coupled to one of the second and third linkages and is configured to raise and lower at least one of the two outer support structures.
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