党参挖掘装置设计与试验

针对现有党参人工挖掘方式挖掘效率低、挖掘成本高的问题,基于人体仿真学,设计一种四杆机构党参挖掘装置。通过Proe建立三维简化模型,采用离散元仿真软件EDEM和多体动力学软件ADAMS建立土壤—党参—挖掘装置简化模型。通过ADAMS_EDEM进行仿真挖掘试验,得出阻力较小时转速和入土角范围。采用SAS软件对转速和入土角度进行最优平衡随机设计的试验,并进行土槽挖掘试验验证。仿真结果表明：较佳的入土角范围75°~80°。最佳的转速范围为：60r/min~90r/min。通过土槽挖掘试验结果表明：当入土角度为通过最后分析得出最佳组合为70r/min×75°时,挖掘机构党参挖松率最高为97.94%。损伤率为4.52%,次之的组合为60r/min×75°。党参的挖松率为96.62%,损伤率为5.7%。

Design and test of Codonopsis pilosula excavating device

in order to solve the problems of low efficiency and high cost of codonopsis pilosula manual mining, a four-bar mechanism codonopsis pilosula mining device was designed based on human simulation. The simplified model of soil-codonopsis pilosula-excavator is established by means of Proe, the simplified model of soil-codonopsis pilosula-excavator is established by means of the discrete element simulation software EDEM and the multi-body dynamics software Adams. Through the Adams simulation excavation experiment, obtained when the resistance is small rotation speed and angle of penetration range. SAS software is used to carry out the optimum balance random design test for rotational speed and soil entry angle, and the soil trench excavation test is verified. The simulation results show that the better range of the earth angle is 75 ~ 80° . The optimum speed range is from 60r/min to 90r/min. The excavation test results show that when the best combination is 70r/min ×75° by the final analysis, the loosing rate of codonopsis pilosula is 97.94% . The damage rate was 4.52% , the next was 60r/min×75°. The rate of loosening was 96.62% and the rate of damage was 5.7% .