Simulation And Experiment Study Of Rice Bowl Dish Precision Seeder

Rice cultivation and harvesting has realized mechanization, the rice planting mechanization average is only 31.67%, become the important factor of restricting the comprehensive level of mechanization of rice. Mechanical rice bowl dish precise seeder because of it’s simple structure, convenient operation, low cost are spread widely. Flap plate transmission mechanism as planter important part of the dropping process, which directly affects the performance of rice seeder investment. Optimized design the flap plate transmission mechanism with Theoretical Analysis, Virtual Prototype Technology and Experimental Research. To eliminate the impact of the flap plate surface Type Hole, reduce the flap plate Angle, improve the seeder performance.This study established mathematical model of mechanical rice bowl dish precise seeder, Rice of displacement and velocity related to the Angle of flap plate. Combined with flap gate transmission mechanism exists special constraints, Using the principle of the mechanical graphical method to determine the flap gate transmission mechanism mathematical model based on the special position, Analysis and determination of main Influencing Factors of maximal angle and initial angle, Analysis of the course of rice dropping processing by the high-speed video technology, To determine the effective maximum angle and the change law of the Flap Plate. Using Pro/E software to establish virtual prototyping model of Mechanical rice precise seeder and verify the accuracy of the virtual prototype. Virtual prototype and experimental design combined with the virtual experiment, data analysis and processing in the SPSS software, Obtained the important order and optimal structure size combination of flap gate transmission mechanism, determining mechanism optimization scheme.Verification optimization scheme in virtual prototype, the maximum angle of the flap plate is 65.2687° after optimization, reduced 13.45% than 75.4151° before optimization, flap plate surface Type Hole no impact effect. In the end, According to verification in the virtual prototype of optimization scheme to improve the physical prototype and verify by testing, the physical prototype maximum angle of the flap plate is 65.2687° after optimization, reduced 11.23% than 74.61° before optimization, Meet the requirements of flap Angle plate effectively, The results showed that virtual prototype simulation analysis results and physical prototype test results with the same change rule, the feasibility and validation of the virtual prototype technology in the optimize flap plate transmission mechanism of mechanical rice bowl dish precise seeder. The problems of large flap Angle plate flap plate surface Type Hole and flap plate maximum angle too steep of seeder dropping process.