The Optimization Design Of Seed Melon Harvester Based On The Mechanical Characteristics Of Seed Melon

Seed melon is mainly used to take the seeds, its seed are a kind of black melon seeds which people like eating in their leisure time. China is a major producing region of seed melon(seed melon and seed pumpkin), Xin Jiang is the biggest planting base in China, the plating area is about 267hm2 each year. Because of the less investment and more output, farmers are very active in planting seed melon, but there are still many problems exist in the most labor-consumming. The major defects of seed melon harvesters are low efficiency and high failure rate. on the other hand, the harvesting season in northern of Xin Jiang is early winter, the bad weather and low temperature result in limited harvesting time and labor force shortage, therefore,research and development new type of seed melon harvester which has high efficiency and low failure rate has great meaning in reducing farmer burden and improving work efficiency.To improve existing seed melon harvester, Author research on present technology development situation and existing problems of seed melon at home and abroad, firstly. Then analyzes the physical characteristics of seed melon, Carries on experiment of compression strength, physical and mechanical characteristics of seed melon with electronic universal testing machine and collects data of external dimensions and mechanical property. Then establish geometric model of seed melon through finite element method, substitute above experimental data in Solidworks and carry on finite element analysis, the result indicates that the load deformation relationship which is detected by universal compression-testing machine is very similar with the load deformation relationship which is analyzed by finite element analysis software. Through a series of analysis and experiment, we got a conclusion that research and analysis on compressibility of seed melon through finite element method is feasible. These research and analysis provide theoretical basis for design seed melon crushing device. Then build the 3D model of seed melon crusher and seed picker through virtual prototype technology and further optimize the design parameters. Analyze the stress and strain on key parts, check the strength and safety factor of key parts, fine out the best parameter of each part and verify the validity of theoretical analysis through experiment at last.