The Overall Structure Simulation-Based Optimization And Research Of The Rice Bud Seeding Machine

The rice bud precision planter has been developed by Guangxi University for mixing pulp tray seedling technology. Field tests showed that the planter has good performance of sowing,but there are still some weaknesses is existing which is not conducive to the promotion and application of the planter,such as the weight is too heavy, poor field-through performance,etc. Therefore, on the basis of ensuring the performance of sowing planter, optimizing the overall structure of planter, further reducing the weight of planter, is of great significance to the promotion and application of the planter and Mechanization of rice cultivation.In this paper, the goju integrated virtual prototype of the Rice Bud Seed planter is biult by the using of virtual prototyping technology.In which process ADAMS, UGNX, ANSYS softwares is jionted. By the use of the method of comparative analysis, comparing the vibrating plate vibration and row case in the virtual prototype and physical prototype test, verifing the reliability of the virtual prototype. The impact of structural changes in track on sowing performance is researched which is depended on the virtual prototype test, the relationship between the bending section modulus and the seed plate seeding longitudinal, transverse coefficient of variation is drawed, basing on the result the optimal orbit is selected. By using ANSYS optimization design method, with the allowable stress and allowable deflection of shaft as constraint conditions, with the mass of front and rear axle as the optimization objectives, the front and rear axles are lightweight designed, the optimal structure size of front and rear shafts are obtained. Using topology optimization method to get the best base material distribution plan,and then on the basis of optimal material distribution plan devised new base structure. Using light materials or new materials to lightweight design the non-core parts of planter. The results showed that the the created virtual prototype has a high degree of accuracy, the mass of the track to reduce by29.5%, a33.2%decrease in the mass of the front and rear axles, a39.5%reduction in the mass of the base, and a76.4%decrease in the mass of the accessories.The mass optimized machine has total reduction of31%, reduced from120.7kg to83.338kg, and seeding performance is guaranteed, the optimization goal is also achieved.