2012 No.4
·专题综述·
重型机械
基于有限元模态及ODS方法的棒材轧机
主齿轮箱剧烈振动分析毛俊文"，潘紫微"，王俊洪’，吴海彤，童新于（1.安徽工业大学机械工程学院，安徽马鞍山243002； 2.马钢华阳设备诊断工程有限公司，安徽马鞍山243002）
摘要：国内某钢厂棒材生产线在生产12mm规格棒材时，发现其棒材轧机精轧机组主齿轮箱振动异常，齿轮箱输入轴端的轴向报动幅值较大，频率为32.512Hz；本文首先通过对棒材轧机齿轮箱整体模型进行模态分析，预估齿轮箱的动态特性，再建立试验测试模型并施加约束，进行ODS分析，得到齿轮箱在工作过程中真实的变形情况，最后结合有限元模态分析结果与ODS试验结果，确定轧机齿轮箱异常振动原因，并应用相关信号测试技术对结果进行了验证。
关键词：轧机齿轮箱；有限元；模态分析；ODS
中图分类号：TG333
文献标识码：A
文章编号：1001196X（2012）04000106
Analysis onviolent vibration of main gear-box in barrollingmillbased
on finiteelement modal and ODS
MAO Jun-Wen', PAN Zi-wei',WANG Jun-hong", WU Hai-tong", TONG Jin-yu(1. School of Mechanical Engineering, Anhui University of Technology, Ma'anshan 243002, China ; 2. Huayang-Ma Steel Equipment Diagnosis Engineering Co Ltd; Ma'anshan 243011, China)
Abstract: The unusual vibration of the main gear-box in the bar rolling mill was found while it was running for dp12 mm bar. The axial vibration amplitude was larger than usual. Through the frequency test, the vibration frequency was 32. 512 Hz. Aiming at the phenomenon, firstly, the dynamic characteristic of the main gear-box was estimated by the modal analysis for the main gear-box model of the bar rolling mill, and then a test model was established and imposed with constraint. Secondly, ODS analysis was conducted to get the gear-box actual deformation during its running. Finally, the abnormal vibration reasons of the gear box were found out by com bining the results of finite element modal analysis and the ODS test. At the same time, a related testing technol-ogy was employed to verify the result.
Keywords: gear-box of rolling mill; finite element analysis; model analysis ; ODS
0前言
国内某钢厂全新引进意大利达涅利公司的棒材轧机设备，其高速棒材生产线年产量大约 70万t左右，产品规格为Φ12mm、Φ14mm和
收稿日期：20120229；修订日期：20120317 基金项目：国家自然科学基金资助项目（50975003）
作者简介：毛俊文（1987－），男，安徽工业大学机械工程学院
硕士研究生。
.1.
Φ16mm。在轧制Φ12mm规格棒材时，发现棒材轧机精轧机组主齿轮箱出现异常，其齿轮箱箱体输出轴端的轴向振动幅值较大，棒材轧机齿轮箱分别联接轧机设备以及电机设备。而齿轮箱的异常振动不仅会破坏轧机设备与电机设备，而且极易诱发现场生产事故[1]。该齿轮箱采用六轴、四级布置，输出端为因轮箱上方两根轴。
本文通过对棒材轧机齿轮箱进行动态特性分析，找出振动源及噪声源。