基于ADAMS的往复式谷物振动筛设计与试验
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摘要
[目的]本文旨在提高脱粒机脱出物的筛分和清选效果,提高作业质量。[方法]设计了一种往复式振动筛,分析了谷物在筛面的受力情况和运动特性,建立了筛子的位移方程,并用ADAMS软件对振动筛的运动特征进行了仿真分析。[结果]求解出不同状态下谷物在筛面上的运动特征值,得到了连杆、摇杆及筛面上的点的运动特征曲线。试验结果表明,当振动筛的振动频率为25.12 rad·s~(-1),筛面的安装倾角为2°,振动方向角为23°时,筛分效率为89.8%,输送速度为0.133 m·s~(-1),可以满足谷物的筛分和输送要求,实现筛分和气流清选的有效配合。[结论]本研究为各物振动筛的结构设计及优化提供了一定的理论依据。
[Objective] The study was aimed to improve the screening and cleaning efficiency of thresher and enhance the job quality.[Methods] In this study, a reciprocating vibrating screen was designed. The stress and motion characteristics of grains on the screen surface were analyzed. The displacement equation of the sieve was established. The motion characteristics of the vibrating screen were simulated using ADAMS software. [Results] The characteristic values of grain motion on the sieve surface under different conditions were calculated, and the motion characteristic curves of the points on the connecting rod, the rocker, and the screen surface were obtained.The results showed that under the condition that the vibration frequency of the vibrating screen was 25.12 rad·s~(-1) with the installation angle of the screen surface at 2°, and the vibration direction angle was 23°, the screening efficiency could reach up to 89.8% with the conveying speed at 0.133 m·s~(-1). [Conclusion] The developed system can meet the screening and conveying requirement of grains and achieve effective cooperation between screening and airflow cleaning.
[Objective] The study was aimed to improve the screening and cleaning efficiency of thresher and enhance the job quality.[Methods] In this study, a reciprocating vibrating screen was designed. The stress and motion characteristics of grains on the screen surface were analyzed. The displacement equation of the sieve was established. The motion characteristics of the vibrating screen were simulated using ADAMS software. [Results] The characteristic values of grain motion on the sieve surface under different conditions were calculated, and the motion characteristic curves of the points on the connecting rod, the rocker, and the screen surface were obtained.The results showed that under the condition that the vibration frequency of the vibrating screen was 25.12 rad·s~(-1) with the installation angle of the screen surface at 2°, and the vibration direction angle was 23°, the screening efficiency could reach up to 89.8% with the conveying speed at 0.133 m·s~(-1). [Conclusion] The developed system can meet the screening and conveying requirement of grains and achieve effective cooperation between screening and airflow cleaning.
引文
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[2]焦红光,布占文,赵继芬,等.筛分技术的研究现状及发展趋势[J].煤矿机械,2006,27(10):8-10.
[3]肖爱玲,李伟.我国红枣分级技术及红枣分级机研究现状[J].农机化研究,2011,33(11):241-244.
[4]李洪昌.风筛式清选装置理论及试验研究[D].镇江:江苏大学,2011.
[5]唐忠,李耀明,李洪昌,等.联合收获机风筛式清选装置清选室内涡流试验[J].农业机械学报,2010,41(12):62-66.
[6]韩小平,胡化成,郑德聪.5XS―600型往复式振动筛试验台的设计与仿真研究[J].中国农机化学报,2011(3):107-110.
[7]鲁云松,朱明,陈海军,等.二自由度振动筛运动学分析及仿真试验[J]华中农业大学学报,2017,36(3):107-112.
[8]王中营,任宁,武文斌,等.基于离散元法的往复振动筛筛分效果研究[J].农机化研究,2016(1):33-38.
[9]汤庆,吴崇友,王素珍,等.谷物清选装置研究现状及发展趋势[J].农机化研究,2013,35(12):225-228.
[10]李宝筏.农业机械学(第二版)[M].中国农业出版社,2018:235-238.
[11]丁为民.农业机械学[M].中国农业出版社,2011:290-291.
[12]耿端阳.新编农业机械学[M].国防工业出版社,2011:392-393.
[13]王玉顺.农业机械学CH08_小麦收获机械简版[Z].晋中:山西农业大学,2015:117-122.
[14]郭卫东,李守忠,马璐.ADAMS 2013应用实例精解教程:ADAMS 2013advanced application tutorial with examples[M].机械工业出版社,2015:1-12.
[15]吴金娥,吕金庆,杨颖,等.基于ADAMS的马铃薯挖掘机运动学仿真[J].农机化研究,2016,38(2):31-34.
[16]杨莉.马铃薯挖掘机摆动分离筛的仿真与参数优化[D].呼和浩特:内蒙古农业大学,2009.
[17]果霖,张天会,王冉,等.基于ADAMS马铃薯收获机振动筛的运动特性分析[J].农机化研究,2016,38(5):24-27.