Dynamic load distribution property of transmission system during rice harvesting process

Abstract

The average time between failures of Chinese combine harvester was far below the advanced combine harvester in Europe and America. A load test system was designed and built on the transmission structure of combine harvester. The dynamic load of the transmission structure was tested on rice harvesting in the field and used to compare with calculated values of maximum load capacity. The damage mechanism and load distribution of transmission structure would be obtained. The test results showed that the average and peak power consumptions of each working part increased with the increase in the speed of the combine harvester. As the stubble height increased, the average and peak power consumptions of each component correspondingly increased with the increase in the load on the entire machine. The power consumptions of the left and right half shafts of the chassis gradually increased, whereas the power consumptions of the other components did not change significantly. The power consumption of the intermediate shaft ranged from 29.53 to 35.92 kW, and the average power consumption was 34.03 kW when harvesting was done at full load in the field. The limit power consumptions of the left and right half axles of the chassis were 9.35 and 11.55 kW.