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Research on Parameter Optimization of Potato Soil Transportation Separation Mechanism

机译：马铃薯土壤运输分离机构参数优化研究

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摘要

In order to improve the operation effect of sweet potato harvester in China, this paper uses EDEM to analyze the single-factor simulation of the potato soil transport separation mechanism, and analyzes the simulation results by using the collision normal force and transport efficiency of sweet potato as the index parameters. The field experiment was designed to verify, and the test results were consistent with the simulation results, which proved the feasibility of using the discrete element method to simulate the operation process of the potato soil transport separation mechanism. However, the actual operation effect of the common potato soil transport separation mechanism is the result of the joint influence of multiple parameters. Therefore, based on the EDEM-based basic simulation, the collision normal force and the transport efficiency are the optimization objectives, and the orthogonal simulation experiment with interaction is used to optimize the parameters, and two sets of parameter optimization combinations are obtained. Based on the secondary development of EDEM software, the number of bond breaks and the change trend of large soil particles were used as evaluation indexes to simulate the two sets of working parameters, and finally the optimal parameters were obtained. The combination is a bar lift with a line speed of 2.3 m/s, an amplitude of 8 mm, and an inclination of 18°.
机译：为了提高在中国的甘薯收获机的运行效果，本文采用EDEM分析马铃薯土运输剥离机构的单因素模拟，利用红薯的碰撞法向力和运输效率分析模拟结果作为索引参数。的田间试验设计进行验证，并且测试结果与模拟结果，证明使用离散元件的方法来模拟马铃薯土壤运输分离机构的动作过程的可行性相一致。然而，公共马铃薯土壤运输分离机构的实际运行效果的多个参数的共同影响的结果。因此，基于所述基于EDEM碱性仿真中，碰撞的法向力和传输效率是优化目标，和正交模拟实验的相互作用用于优化参数，并获得参数优化组合的两个集合。基于EDEM软件的二次开发，键断裂的数量和大土壤颗粒的变化趋势，以此作为评价指标来模拟两套工作参数，并最终获得了最佳工艺参数。所述组合是杆上升与2.3米/秒的线速度，8毫米的振幅，和18°的倾斜。

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