Research on Efficient Head-feed Threshing and Separating Device

摘要

The structure and the major working parts of self developed head-feed threshing and separating device test-bed were modified to meet the harvest requirement for high yielding rice. The working performance of the test-bed was improved through increasing the length of threshing cylinder and optimal selection of the concave clearance. Taking feed rate, feed depth and velocity of threshing cylinder as controlling parameters, threshing experiments were conducted. According to the orthogonal experimental results, regression equations of total loss rate and power consumption were established utilizing the DPS data processing software. Using multi-objective optimization algorithm, the optimal working parameters of the test-bed with the feed rate of 2.8-4.2kg/s were received and the results show that the total loss rate could be controlled in a range of 1.25-1.65%, and the power consumption range of 8.5-11.3kw.