Oscillating spreading arrangement for a combine harvester
AssigneeRekordverken Sweden AB
InventorBengt Holmén
Life of this patent
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Abstract
A combine harvester includes a straw chopper having an inlet for unchopped straw, an outlet for chopped straw in an essentially horizontal direction, and a spreader fan, connected downstream of the outlet of the straw chopper and having an essentially horizontal plane of rotation, for spreading the chopped straw over a ground surface. The combine harvester further includes a guide member, which is arranged to deflect at least a part of the stream of chopped straw material to an axial intake of the spreader fan such that a part of chopped straw material meets the blades of the spreader fan in the direction of transport of the chopped straw material through the spreader fan at an acute angle (α) relative to the plane of rotation of the spreader fan.
Claims20
A spreading arrangement adapted to be arranged after a straw chopper of a combine harvester, said spreading arrangement comprising:
- two spreader fans;
- and
- a spreading assembly,
- including two spreading surfaces and two shafts, wherein the two spreading surfaces are arranged to swing in tandem, wherein one of the two spreading surfaces is pivotally suspended about one of the two shafts, and wherein the other spreading surface is pivotally suspended about the other of the two shafts,
- said spreading assembly disposed downstream of said two spreader fans such that the spreading assembly controls the spreading of straws after the straws have left the two spreader fans, and
- said spreading assembly operable to move in an oscillating frequency so as to spread at least a part of chopped straws at the oscillating frequency, wherein the spreading assembly is configured to oscillate along a plane that is parallel to a plane of rotation of the two spreading fans, and wherein the two shafts are parallel with and do not coincide with the spreader fans' rotation axes.
A spreading arrangement adapted to be arranged after a straw chopper of a combine harvester, said spreading arrangement comprising:
- two spreader fans;
- a spreading assembly,
- including two spreading surfaces and two shafts, wherein the two spreading surfaces are arranged to swing in tandem, wherein one of the two spreading surfaces is pivotally suspended about one of the two shafts, and wherein the other spreading surface is pivotally suspended about the other of the two shafts,
- said spreading assembly disposed downstream of said two spreader fans such that the spreading assembly controls the spreading of straws after the straws have left the two spreader fans, and
- said spreading assembly operable to move in an oscillating frequency so as to spread at least a part of chopped straws at suitable frequency;
- and
- a guide plate for guiding at least part of said chopped straws into said spreader fans, wherein said guide plate is positioned below said straw chopper, and wherein the two shafts are parallel with and do not coincide with the spreader fans' rotation axes.
Dependencies are inferred from the claim text.