| 主权项 |
1. A square baler comprising:
a wheeled frame having a front end and a rear end, the front end having a hitch adapted for connecting the baler to a powered wheeled vehicle such that the vehicle is capable of pulling the baler through a field surface filled with crop; the front end further comprising an inclined surface having a lower edge located near the field surface such that as the baler is pulled over the field surface the corp is forced up the inclined surface; a preloading chamber mounted above the wheeled frame rearward of the inclined surface and forward of a baling chamber, the preloading chamber having a height which is substantially less than a height of the baling chamber, the preloading chamber being further oriented such that a midpoint of the height of the preloading chamber is located about level with a midpoint of the height of the of baling chamber; a semi cylindrical compression roller slidably and rotably mounted on a vertical mount structure located at a front of the baling chamber, the roller having a curved face with an arc length which is substantially as long as the height of the baling chamber; the roller being slidable between a low position near a bottom of the bailing chamber, a high position near a top of the baling chamber, and a middle position located halfway between the high position and the low position and about level with the midpoint of the height of the of baling chamber; the roller being rotatable such that when it is located in the low position, the curved face is directed substantially vertically upward, when it is located in the middle position, the curved face is directed substantially horizontally rearward, and when it is located in the high position, the curved face is directed substantially vertically downward; whereby as the roller is slid upwardly from the low position toward the high position while the baler is being pulled forward, the curved face rotates gradually from the upward facing direction through the rearward facing direction and to the downward facing direction, and whereby as the roller is slid downwardly from the high position toward the low position while the baler is being pulled forward, the curved face rotates gradually from the downward facing direction through the rearward facing direction and to the upward facing direction; a feeding device adapted for moving piles of crop from the preloading chamber into the front of the baling chamber; whereby when the roller is positioned below the middle position, the feeding device moves a first pile of crop to a location above the curved face, and then, as the roller moves upwardly, the curved face compresses the first pile of crop rearwardly and upwardly in the bale chamber; and whereby when the roller is positioned above the middle position, the feeding device moves a second pile of crop to a location below the curved face, and then, as the roller moves downwardly, the curved face compresses the second pile of crop rearwardly and downwardly in the bale chamber. |
