Tedder with hydraulic folding mechanism and method for adjusting a tedder
AssigneeKverneland Group Kerteminde A/S
InventorsChristian Hirt, Tobias Lamprecht
Life of this patent
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Abstract
The disclosure relates to a tedder comprising a main frame connectable to a carrier vehicle, two pivotal wing arms including at least one carrier beam respectively oriented transversely to the direction of travel, a plurality of rotors arranged on the carrier beams for tedding and turning harvested material and a hydraulic system. The hydraulic system comprises two folding cylinders for folding the wing arms and a pressure closing valve for limiting the hydraulic pressure of the folding cylinders. The hydraulic system further comprises a carrier cylinder for lifting the carrier beams with respect to the main frame, wherein a valve means that is formed and arranged to bypass the pressure closing valve upon actuation.
Claims20
A tedder comprising a main frame connectable to a carrier vehicle, two pivotal wing arms including at least one carrier beam respectively oriented transversely to a direction of travel, a plurality of rotors arranged on the at least one carrier beam for tedding and turning harvested material, and a hydraulic system, wherein the hydraulic system comprises:
- two folding cylinders for folding the wing arms,
- a pressure closing valve for limiting the hydraulic pressure of the folding cylinders,
- a carrier cylinder for lifting the at least one carrier beam with respect to the main frame, and
- a valve means that is formed and arranged to bypass the pressure closing valve upon actuation.
Dependencies are inferred from the claim text.