Grain harvesting machines have long history, development started in 19th century.
Combine harvester has to be suitable for crop. Productivity should be optimal, to harvest crop in optimal time and term.
Important performance factors are throughput capacity, looses, grain quality, ease of operator use and economics.
Removable heads - header
Clean grain taillings and elevators
Grain bin and unloading auger
Threshing – grain separation from crop
Threshing occur when crop is mowing between the surfaces of a rotating cylinder and open – mesh concave.
There are two kinds of threshing mechanism – classical and rotary. …