基于ADAMS的4UD-600型马铃薯挖掘机振动机构的参数优化设计

Optimal design of the vibrational structure of 4UD- 600potato digger based on ADAMS

跟据振动减阻机理,对4UD-600型马铃薯挖掘机振动机构进行改进设计。在ADAMS软件中建立了4UD-600型马铃薯挖掘机振动机构的参数化模型,通过分析物料在分离筛筛面上的相对运动,在保证较高筛选效率的前提下,以生产率最高为优化目标对机构进行了优化设计,得到了机构最优参数组合:曲柄LOA=5.5 mm,摆臂LBD=570 mm,主筛摆连杆LEF=110 mm,连杆LJK=160 mm,曲柄转速nOA=4 666°·s-1。优化后物料沿筛面的平均移动速度从0.089 m·s-1提高到0.122 m·s-1,挖掘机生产率显著提高,理论的正确性在后续的实际改进设计中已得到验证。

According to the mechanism of turbulent drag reduction ,improved the design of 4UD - 600 potato dig-ger .A parametric model for the vibrating structure of 4UD - 600 potato digger was established using ADAMS software . After analyzing the relative motions of materials on separating screen surfaces ,to achieve highest productivity ,an opti-mization of this vibrating structure was performed ,and resulted in optimal combination of parameters .The optimal combi-nation of parameters were ：the length of crank LOA = 5 .5 mm ,the length of swing arm LBD = 570 mm ,the length of main screen pendulum rod LEF = 110 mm ,the length of connecting rod LJK = 160 mm ,the speed of crank nOA = 4 .666°·s - 1 . After this optimization ,results showed that the average moving speed of materials along the screen surfaces was increased from 0 .089 m·s - 1 to 0 .122 m·s - 1 ,significantly improving the productivity of the excavator .Validity of the theory had further been verified in subsequently actual improvement design .