| 摘要 |
A double windrowing attachment for a harvester comprises a reversibly driveable conveyor shiftable between a first crop discharge position for forming a windrow inboard of one side of the harvester and a second crop discharge position for forming a second windrow along the opposite side of the harvester. The conveyor is supported on the attachment frame at only three points. One side of the conveyor is supported on a pair of feet movably supported on an elongated guide. The opposite side of the conveyor is supported by a shift arm which is used to shift the conveyor. The shift arm is pivotally mounted at one end to the attachment frame and movably mounted at the other end in a track fixed to the conveyor. The crop discharge positions are adjustable and permit a double windrow to be formed either in a side-by-side or in a stacked disposition. To prevent crop from being discharged from the conveyor onto uncut crop, a switch reverses a hydraulic drive for the conveyor prior to the beginning of movement of the conveyor from the first to the second crop discharge position and reverses the hydraulic drive responsive to the completion of movement of the conveyor from the second to the first crop discharge position. The attachment is mounted on the harvester frame by moving the harvester from a lowered harvesting position to an elevated transport position. The attachment is supported entirely off the ground by and extends rearwardly from the harvester frame and counterbalances the weight of the harvester header supported on and extending forwardly from the harvester frame. |
