A pre-concave frame typically consists of two or more frames connected together in a specific way. The first frame is usually a rigid structure that supports the header, which is the part of the combine harvester that cuts the crop. The second frame is a flexible structure that supports the threshing and separating components of the machine. The flexible frame is usually made of curved or bent metal, which allows it to absorb shock and vibration during operation.
To combine these two frames, the rigid frame is typically mounted on top of the flexible frame. The two frames are connected by a series of bolts and pins, which allow the frames to move independently of each other. This design allows the flexible frame to move up and down as the machine travels over uneven terrain, while the rigid frame remains stable.
The pre-concave frame is designed to improve the efficiency of the threshing and separating process by ensuring that the crop is evenly distributed across the threshing components. As the crop is harvested, it is first cut by the header and then transported to the threshing components by a series of belts and chains. The flexible frame of the pre-concave frame helps to distribute the crop evenly across the threshing components, which helps to ensure that the crop is threshed and separated efficiently.
In addition to improving harvesting efficiency, a pre-concave frame can also help to reduce crop losses by minimizing the amount of crop that is left unharvested. By ensuring that the crop is evenly distributed across the threshing components, the pre-concave frame helps to ensure that all of the crop is threshed and separated, which reduces the amount of crop that is lost during the harvesting process.
Overall, the pre-concave frame is an important component of a combine harvester that helps to improve harvesting efficiency and reduce crop losses. Its unique design allows it to distribute the crop evenly across the threshing components, which ensures that all of the crop is harvested efficiently and effectively.
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