新型旋振筛电动机转速对物料运动特性的影响分析  

Analysis on new motor speed of rotary vibration screen affected to material kinematic characteristics

作　　者：闫宏伟[1] 汪洋 马建强 袁飞 李亚杰 彭方现 YAN Hongwei;WANG Yang;MA Jianqiang;YUAN Fei;LI Yajie;PENG Fangxian(School of Mechanical Engineering, North University of China, Taiyuan 030051, China)

机构地区：[1]中北大学机械工程学院,山西太原030051

出　　处：《煤炭科学技术》2018年第3期148-154,共7页Coal Science and Technology

基　　金：山西省重点研发计划(一般项目)社会发展资助项目(201603D321117);山西省自然科学基金资助项目(2013011026-2)

摘　　要：为解决现有筛分设备笨重,不适用于煤样的精细制样问题,提出了一种可以反复利用倾斜筛面进行筛分的小型旋振筛。基于多体动力学理论,采用虚拟样机技术对筛上物料的运动特性进行了仿真。通过比较5组电动机转速下物料的运动轨迹、速度以及角速度曲线,得到了物料运动特性最佳时的电动机转速及后续试验的电动机转速取值区间。制造试验设备并在该区间内进行筛分效率试验,同时对仿真结果进行验证。结果表明:当物料动态特性最佳时,仿真中得到的电动机转速最大的区间为600~1 200 r/min;在该区间进行试验后,得到了电动机转速在960~1 020 r/min范围内的筛分效果最优,仿真结果与试验结果相符。本研究可以为筛分装备设计提供新方法,为后续研究提供技术参考。In order to solve a cumbersome of the available screening equipment and a not suitable fine coal sample preparation problem of the coal samples,a repeated applied inclined screen for a small rotary vibration screen was provided. Based on a multimer kinematics theory,a virtual prototype technology was applied to simulate the kinematic characteristics of the materials on the screen. With the comparison on the kinematic track,speed and angular speed curve of the material under the revolution of five set electric motors,the best motor revolution of the material kinematic characteristics and the interval between the motor speeds in the late test were obtained. A screening efficiency test was conducted at the interval of the manufactured test equipment and the verification was conducted on the simulation results.The result showed that when the material kinematic characteristics were in optimum,a max interval of the motor speed obtained from the simulation was 600 ~ 1 200 r/min. After the test conducted at the interval,the screening effect obtained within a motor speed ranging from 960 ~ 1 020 r/min was best and the simulation results could tally with the test results. The study could provide a new method to design the screen equipment and could provide an important basis to the late study.

关 键 词：旋振筛 虚拟样机 物料 运动特性 电动机转速 

分 类 号：TH122[机械工程—机械设计及理论]