Research of Virtual Test of the Combine Harvester and its Key Components

摘要

According to the purpose and requirements of a virtual test,the complex mechanism of the combine harvester was abstracted and simplified to some extent during modeling,but in order to guarantee the closeness between simulation result and the reality,attention was paid to keeping the total mass of all components close to the actual mass of the combine harvester and reducing workload during modeling.The vibration test of the cleaning operation includes horizontal vibration and vertical vibration.The test conditions are that:the combine harvester is still and has no load and only the engine runs,or the engine and the cleaning component run simultaneously.To guarantee the extractions are thrown out of the machine in the rear end of the screen,the backward slip of the extractions is greater than forward slip.The simulation result satisfactorily reflects the real situation and is same as theoretical analysis.The result indicates the virtual test and the real test are consistent.