Design and experiment on corn stubble screening conveyor device

One kinds of agriculture machine is researched, it can be used to harvest corn stubble. The `Three-factor quadratic regression orthogonal rotary method´ was adopted to improve working performance of screening conveyor device in this machine, The influences of rotational speed, conveying angle and position of shaking wheel on the rate of removing soil and efficiency of removing soil were investigated. The results showed that the sequences of factors, which influencing working performance, were rotational speed, conveying angle and position of shaking wheel. Optimal parameters of this device were as abstained that rotational speed was 130 r/min, conveying angle was 20 °, distances between shaking wheel and driving wheel was 626 mm. The research results can provide a reference for design and performance improvement of the machine.