Experimental study on wheat feed rate of tangential-axial combine harvester

To timely inform the combine harvester feed rate when the combine harvester was harvesting in field, the core components of tangential drum, the assisting feeding drum and longitudinal-axial drum taken from the tangential-axial combine harvester were used to build tangential-longitudinal-axial threshing-separating test-bed in the laboratory. The performance experiments of wheat threshed and separated with the feed rate of 1-8 kg/s were executed on the tangential-longitudinal-axial threshing-separating test-bed. The power consumption of the tangential drum, the power consumption of the assisting feeding drum and the power consumption of longitudinal-axial drum were measured on the test-bed. Mathematical formulas between the feed rate and longitudinal-axial drum power consumption were derived based on analysis the wheat threshed and separated power on the tangential-longitudinal-axial threshing-separating test-bed. The predicted feed rate of wheat was verified by executed the randomly feed rate experiment on the tangential-longitudinal-axial threshing-separating test-bed. The results showed that the wheat feed rate of the test-bed was accurately predicted by the derived mathematical formula. When the wheat feed rate was less than 6 kg/s, the prediction error was less than 0.89%. When the wheat feed rate was 7-8 kg/s, the prediction error was 1.02-1.42%.