离心制管机永磁轴承磁力计算与拼接永磁体形状分析  

Magnetic Force Calculation and Spliced Permanent Magnet Shape Analysis of Permanent Magnet Bearings for Centrifugal Pipe-Making Machine

作　　者：邵龙 徐曼曼 王向东 张志涛 毛徐徐 SHAO Long;XU Manman;WANG Xiangdong;ZHANG Zhitao;MAO Xuxu(School of Mechanical Engineering,Anhui Polytechnic University,Wuhu 241000,China;Wuhu Magnetic Wheel Transmission Technology Co.,Ltd.,Wuhu 241000,China)

机构地区：[1]安徽工程大学机械工程学院,安徽芜湖241000 [2]芜湖磁轮传动技术有限公司,安徽芜湖241000

出　　处：《轴承》2024年第1期56-61,共6页Bearing

基　　金：2022年度安徽工程大学-鸠江区产业协同创新专项基金资助项目(2022cyxtb8);国家自然科学基金青年基金资助项目(12205004);安徽省智能矿山技术与装备工程实验室开放研究课题(AIMTEEL202201);安徽省自然科学基金资助项目(1908085QA25)。

摘　　要：针对传统离心制管机托轮支承结构磨损严重问题,提出了一种半定子环径向永磁轴承替代托轮的离心制管机永磁悬浮支承系统方案,根据等效磁荷法建立悬浮力数学模型,采用蒙特卡洛法近似求解,简化了悬浮力计算的数学推导和演算,并与有限元仿真比较,给出了误差修正系数,修正后蒙特卡洛法与有限元仿真结果基本一致,满足了工程应用的需要。将转子永磁体分别设计为扇形、梯形和矩形,通过仿真分别得出永磁轴承的悬浮力及扭矩,结果表明扇形永磁体各方面性能均优异,梯形永磁体次之。In view of the serious wear problem of support structure of drag wheel of traditional centrifugal pipe-making machine,a scheme of permanent magnet suspension support system of centrifugal pipe-making machine is proposed,in which the radial permanent magnet bearings with half-stator rings replace the drag wheels.The mathematical model of suspension force is established according to equivalent magnetic charge method,and the Monte Carlo method is adopted to approximate the solution,simplifying the mathematical derivation and calculation of suspension force.Compared with finite element simulation,the error correction coefficient is given.The corrected calculation results of Monte Carlo method are basically consistent with finite element simulation results,meeting the needs of engineering applications.The rotor permanent magnets are designed as sector,trapezoid and rectangular structures,and the suspension force and torque of the bearings are obtained through simulation.The results show that the sector permanent magnet has excellent performance in all aspects,followed by trapezoid permanent magnet.

关 键 词：滑动轴承 磁力轴承 离心机 蒙特卡洛法 磁力 永磁体 

分 类 号：TH133.31[机械工程—机械制造及自动化] TB115.1[理学—数学]