What are the types and characteristics of rice harvesting machinery?
The main function of harvester (harvester) is to cut down the rice and spread it out one by one in the field. The machine has the advantages of simple structure, light body, convenient handling, simple use and maintenance, but it has low efficiency, high labor intensity and great loss.
Semi-feed combine harvester is to clamp the cut rice with a clamping chain at the base of the stem, and only let the ear enter the threshing device for threshing. Therefore, less power is consumed during threshing, and the stalks can be kept intact. But the productivity of this model is not high enough.
All-feed combine harvester feeds all the cut rice ears and stalks into threshing device. This machine has high productivity and strong adaptability to crops.
No matter whether it is semi-feeding or full-feeding combine harvester, automatic adjustment device, monitoring instrument and hydraulic device are adopted more or less, thus improving the working performance of the machine and the working conditions of the driver. Because the combine harvester completes cutting, threshing, grain cleaning and other operations in the field at one time, it has a high degree of mechanization and good operation quality, which can improve labor productivity and harvest in time in busy farming season to ensure increased production and income. However, the combine harvester has complex structure, high cost and high technical requirements for use and maintenance, so it should be selected according to the local economic and technological level.