| In recent years, the harmless medicine was pursued and admired in the world, and the requirement Chinese medicinal herbs in increasing year by year in China. The reduction of the production of Wild Chinese medicinal materials and the rising prices of Chinese herbal medicines attract a large number of farmers to plant and cultivate Chinese medicinal herbs.Only the licorice, the plantation area has more than 4600000 acres.Therefore, the mechanization of the medicinal materials industry has become an important issue needed to be resolved. At present, the main method of harvest of the astragalus and licorice were artificial and semi mechanized. The features of artificial harvest were high labor intensity, high loss rate, high labor costs and low efficiency. The semi mechanized harvest need manual picking and bigger digging resistance.Through the investigation and study about the manufacturing industry of the Chinese herbal medicine harvesting machinery both here and abroad and the current situation and future development trends of short root crops harvest machinery industry, to analyse the key problems of Mechanical harvesting. Based on the development trend and the mechanisation of the Chinese herbal medicine harvester, to analysis the structural and theory and determine the parameters of type 4Y-1200 traditional Chinese medicine harvester. The use of Solidworks 3D software to complete the design of the virtual prototype for the 4Y-1200 type medicine harvester. The harvester is consisted of the machine frame, the digging device, the separation device, The collection device and the depth adjustment device. Using Solid Works Simulation, in the 3km/h to 4.83km/h speed, analyzed the key components such as the digging shovel, the supporting frame of digging device and the machine frame by finite element analysis, to draw the corresponding diagram of stress, strain, displacement. By analyzing stress distribution of the stress of the machine frame in the greater part, to determine the mechanical properties and the safety coefficient of the various parts. |