Simulation And Experimental Study On Rape's Combine Harvester Cleaning Device Based On ADAMS

This subject has introduced research dynamic status and cleaning device overview about the combine harvester both at home and abroad. Cleaning characteristic (including its mechanical characteristic, aerodynamics characteristic, etc) of the rape were measured and studied, and analysed and compared with the rice and wheat. Through introducing the concept of cleaning exponent during the cleaning course, analysed the force which the sieve and airflow exert to rape materials among the device synthetically, derived various kinds of movement formula of rape materials in cleaning device. Based on those, analysed movement form of the materials in the cleaning device. And then proceed from collision theory of the particle, set up speed formula of the materials group, analysed materials moving law and the theory of delamination on this basis. Based on The experimental platform of thresh, separate, cleaning , Simulation and control of DF-1.5, Used ADAMS, one of the virtual prototype softwares, to construct its virtual three-dimensional entity model and carried on a simulation and virtual test on it. Simulated out materials movement orbit and movement situation between the groups of different layers on sieve surface, Found out some parameters which influence cleaning course the most through studying further, including the force of airflow, the amplitude and the vibration frequency of sieve, etc. This offered the basis for following real test. Finally tested through the single factor of carrying on organization's parameters and working parameters in the experimental platform, looked for and verified the parameters which influence the cleaning course the most and the influence degree, and through the rhombic finding the best suitable parameter of rape cleaning.This subject is on the basis of abundant research of rape and its materials, analysed rationally the movement of rape materials in the airflow and on the sieve surface, Through utilizing advanced simulation software to carry on a simulation and virtual experimental study, and selecting those parameters which influence cleaning course the most to carry on experimental study on the rape cleaning, found out the working parameters and organization's parameters which is suitable for rape cleaning. These works give helps to design and improvement of the cleaning device of combined harvester.