气垫炉机架的动态特性分析与设计
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摘要
气垫炉平台中机架的动态特性直接关系到气垫式热处理过程能否稳定进行,特别当机架的频率与设备的运转频率相等时,容易引起设备的共振,因此开展关于机架动态特性的研究能够为设备动态理论研究奠定重要的理论基础。本文首先设计了气垫炉的机架结构,获得了机架的前16阶模态的固有频率和振幅。机架加工完成之后,采用测振仪检测机架的振动,测试结果表明:机架所设计的固有频率能够避开设备的运转频率,机架实际振动的最大幅值小于0.02mm,因此本设计中的机架满足动态特性要求。
The dynamic characters of the frame in air cushion furnace platform are related to the stability of the air cushion heat treatment process. When the frequency of the frame is equal to the operation frequency of the equipment, it is easy to cause the resonance of the equipment. Therefore, the research on the dynamic characteristics of the frame can lay an important theoretical foundation for the dynamic theory research of equipment. In this paper, the frame structure of the air cushion furnace is designed firstly. Then the natural frequency and amplitude of the first 16 order modes of the frame are obtained. After the frame is assembled, the vibration of the frame is detected by the vibration meter. The test results show that the natural frequency designed by the frame can avoid the operation frequency of the equipment and the actual maximum vibration amplitude of the frame is less than 0.02 mm. The design of the frame meets the design requirements.
The dynamic characters of the frame in air cushion furnace platform are related to the stability of the air cushion heat treatment process. When the frequency of the frame is equal to the operation frequency of the equipment, it is easy to cause the resonance of the equipment. Therefore, the research on the dynamic characteristics of the frame can lay an important theoretical foundation for the dynamic theory research of equipment. In this paper, the frame structure of the air cushion furnace is designed firstly. Then the natural frequency and amplitude of the first 16 order modes of the frame are obtained. After the frame is assembled, the vibration of the frame is detected by the vibration meter. The test results show that the natural frequency designed by the frame can avoid the operation frequency of the equipment and the actual maximum vibration amplitude of the frame is less than 0.02 mm. The design of the frame meets the design requirements.
引文
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[4]李楚方.我国高精度铜板带项目的产品市场定位[J].有色金属加工,2006(4):20-21.
[5]王涛.中国高精铜板带的发展及市场需求[J].中国金属通报,2007(7):6-11.
[6]昌向阳.铜都铜业公司高精度铜板带项目可行性研究[D].合肥:合肥工业大学,2010.
[7]龚寿鹏.铜板带材产品的现状及发展[J].上海有色金属,2011(3):140-143.
[8]黄鑫.年产13000吨高精铜带工程的可行性研究[D].长沙:中南大学,2011.
[9]龚寿鹏.高精度铜板带材生产技术[J].上海有色金属,2012(1):46-49.
[10]LI Y,LI J D,LING X,et al.Optimization and aerodynamic characteristics of new air-cushion nozzle of floating furnace for automobile body sheet[J].Journal of Harbin Institute of Technology,2017,24(1):57-64.
[11]LI Y,WANG Z D,MA M T,et al.Review and prospect of the air cushion furnace technology for aluminium alloy automotive sheet pre-treatment[J].Engineering Sciences,2014(1):14-22,2.
[12]侯帅,王效,花福安,等.大型气垫式退火炉试验平台的研究与开发[J].东北大学学报(自然科学版),2015,36(12):1706-1709.
[13]HOU S,HUA F,LV W,et al.Hybrid modeling of flotation height in air flotation oven based on selective bagging ensemble method[J].Mathematical Problems in Engineering,2013(3):1-9.
[14]高雷.汽轮发电机组共用机架力学特性研究[D].哈尔滨:哈尔滨工程大学,2013.
[15]冯艳飞.基于ANSYS对950轧机机架有限元分析研究[D].包头:内蒙古科技大学,2012.
[16]张帆,王宇航,姜永涛,等.辊式挤压成型机机架设计与有限元分析[J].磷肥与复肥,2011(3):55-57.
[17]周祥态.并联式数控龙门铣床C形机架设计与优化[D].南京:南京理工大学,2013.
[18]TIMUSHEV S,GAMARNIK A,TSIPENKO A,et al.Numerical modeling of air-grass flow and BPF noise in lawn mowers[C].ASME/JSME 2007 5th Joint Fluids Engineering Conference,2007:237-240.
[19]RIVETTI A,LUCINOL C,LISCIA S,et al.Pressure pulsation in kaplan turbines:prototype-CFD comparison[C].IOP Conference Series:Earth and Environmental Science,2012,15(6):062035.
[20]JUNG C H,KIM C S,CHOI Y H.A dynamic model and numerical study on the liquid balancer used in an automatic washing machine[J].Journal of Mechanical Science and Technology,2008,22(9):1843-1852.
[21]GRIGORIEV M M,SWIATEK C V,HITT J A,et al.Benchmarking cd-adapco's star-ccm plus in a production design environment[J].Asme Turbo Expo:Power for Land,Sea,&Air,2010:1019-1025.
[22]CHOCHUA G,MAIER W C.Computational and analytical study of multiphase rotary separator turbine liquid outlet[J].Asme Turbo Expo:Power for Land,Sea,&Air,2007:1387-1394.
[23]BATTAGLIA V,MALFA E,FANTUZZI M,et al.CFD modeling of complete walking hearth reheating furnaces[J].Metallurgia Italiana,2011(9):37-44.
[24]LAMABADU D,RAJAKARUNA S.Dynamic analysis of a novel single-phase induction generator using an improved machine model[J].IEEE Transactions on Energy Conversion,2016,PP(99):1.
[25]REN Y,YU Y,ZHAO B,et al.Finite element analysis and optimal design for the frame of sx360 dump trucks[J].Procedia Engineering,2017(174):638-647.
[26]王婧.流场计算机模拟在热处理炉设计中的应用[D].上海:上海交通大学,2008.