Design and Parameter Optimization of Transplanter Seedling Picking Mechanism
In order to solve the problems of complex structure and high matrix loss rate of the existing seedling collecting device,a bowl type seedling collecting device driven by motor was designed.The corresponding mathematical model was established by ana-lytical method,and the parameters of the mechanism were determined.In order to ensure the effect of the mechanism,the nonlin-ear programming genetic algorithm was used to optimize the design.The genetic algorithm uses real number coding,applies rou-lette sampling method,through selection and crossover,uses the value of new individuals as the initial value of nonlinear pro-gramming to optimize,and finally uses the optimization parameters to establish a three-dimensional model,and uses ADAMS software to simulate and verify the design results.The simulation results show that the opening and closing distance of the seed-ling claw is accurate,the velocity curve is smooth,the work is stable,and the vibration is small.The maximum acceleration of the seedling claw in the x and y directions is 178.658mm/s2 and 137.208mm/s2 respectively,which is less than 45m/s2,meeting the operation requirements.The results showed that when the frequency of picking seedlings was 50 plants/min,the rate of picking seedlings was92.18%,the damage rate was3.12%,and the action of clamping and holding seedlings was stable,which met the requirements of transplanting.
NETL
NSTL
万方数据
维普
