The cleaning device test-bed about air and screen cleaning of single longitudinal axial flow was designed in order to aim at the status of lacking the cleaning device about rice single longitudinal axial flow combine harvester now.

Research and Application of cleaning fan with non-uniformly distributed air flow;

Nonlinear motion law of material on air-and-screen cleaning mechanism;

Study on Motion Law of Materials in Air-and-Screen Cleaning Mechanism Based on High-speed Imaging System;

Based on the analysis with actual working condition of air-and-screen cleaning mechanism in combine harvester, a vibro-impact motion model of material on harmonic vibration sieve was established and then derived the nonlinear interactive equation with Jacobi matrix to analysis the motion stability of material.