Please wait a minute...
浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (8): 1502-1507    DOI: 10.3785/j.issn.1008-973X.2010.08.012
机械工程     
电梯导轨立式压力矫直关键技术研究
余忠华,周磊
浙江大学 现代制造工程研究所,浙江 杭州 310027
Key technologies of vertical press-straightening of elevator rail
YU Zhong-hua， ZHOU Lei
Institute of Modern Manufacturing Engineering, Zhejiang University, Hangzhou 310027, China
 全文: PDF  HTML
摘要：

为解决在垂直方向上具有非对称性的电梯导轨的弯曲变形矫直问题,提出确定电梯导轨立式矫直的反向弯曲曲率和矫直下压量的理论模型,给出明确的矫直曲率方程和矫直行程公式.从电梯导轨生产工艺流程出发分析电梯导轨弯曲变形原因,并基于弯曲变形测量数据拟合出电梯导轨垂直方向弯曲变形的原始弯曲曲线,利用线性弹塑性理论分析了导轨立式压力矫直的反向弯曲曲率与原始弯曲曲率间的关系,给出具体的导轨压力矫直曲率方程,可便捷得到矫直一定原始曲率的矫直反弯曲率.为便于实际电梯导轨矫直的操作,利用所得的反弯曲率进一步推导出矫直行程的表达式,可直接用于计算矫直一定原始弯曲的矫直行程.利用该方法,对T90/B电梯导轨进行求解,给出其初始弯曲曲率与反弯曲率、矫直下压量的关系曲线,并对其进行有限元验证,结果显示,计算矫直行程和矫直曲率的方法有效可行.
Abstract:

In order to solve the vertical straightening problem of elevator rail which having asymmetrical section in the vertical direction, a theoretical model for the reverse bending curvature and straightening stroke was developed，the explicit curvature formula and straightening stroke expression were given. From the production process of elevator guide rail, the bending deformation causes were discussed, and the original bending curve was fitted by the measured data. The relationship of reverse bending curvature and original bending curvature during the straightening process was analyzed by the linear hardening elasticplastic theory. And then, the explicit formula for the elevator rail reverse bending curvature in corresponding to its original bending curvature was obtained. For convenience, an expression for the reverse stroke of pressing down was further given by the reverse bending curvature, so that the straightening stroke corresponding to its original bending deflection could be calculated directly. An example to T90/B elevator rail straightening, the curve between original curvature and reverse curvature, and the curve between the stroke of pressing down and the original curvature were given by the proposed method. Through the comparison with the finite element method, the results show that this method is feasible.
出版日期: 2010-09-21
:  TG 941  
基金资助:

国家自然科学基金重点资助项目(50835008);浙江省科技计划资助项目(2008C21124)
作者简介: 余忠华(1963-),男, 浙江淳安人, 教授,博导,从事先进制造技术、检测与质量控制等研究. E-mail: yuzhh@zju.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　

引用本文:

余忠华, 周磊. 电梯导轨立式压力矫直关键技术研究[J]. J4, 2010, 44(8): 1502-1507.

TU Zhong-Hua, ZHOU Lei. Key technologies of vertical press-straightening of elevator rail. J4, 2010, 44(8): 1502-1507.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.08.012    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I8/1502

［1］ 张翼明. 两种T型电梯导轨冷加工技术的研究［J］.首钢科技,1992(3):1115．
ZHANG Yiming. Study on cold technology of two kinds of T shape elevator guide rail ［J］. Shou Gang Science and Techology, 1992(3):1115．
［2］ 曹爱文,熊国良.压力校直技术的发展.锻压装备与技术［J］. 2007(1):913．
CAO Aiwen, XIONG Guoliang. Development of pressure straightening technology ［J］. China Metal Forming Equipment and Manufacturing Technology. 2007(1): 913．
［3］ 李骏,邹慧君,熊国良.压力校直工艺理论研究的现状与展望［J］.机械设计与研究,2004, 20(4):6971．
LI Jun, ZOU Huijun, XIONG Guoliang. Status and prospects of theoretical study on press straightening technology ［J］. Machine Design and Research, 2004, 20(4): 6971．
［4］ LI Keyang, CHEN Chaokuang, YANG Shyuecheng. Profile determination of tubestraightening roller by envelope theory ［J］. Journal of Materials Processing Technology, 1999, 94(2):157166．
［5］ 徐曼琼, 蔺书田, 汪北平,等. 电梯导轨反弯矫直弹塑性变形分析 ［J］. 机械科学与技术, 2007, 26(8):10101013．
XU Manqiong, LIN Shutian, WANG Beiping, et al. Elasticplastic deformation analysis of guide rail of elevator in straightening its bends ［J］. Mechanical Science and Technology for Aerospace Engineering, 2007, 26 (8): 10101013．
［6］ 崔甫.矫直理论与矫直机械［M］.2版. 北京:冶金工业出版社,2007:5357．
［7］ 中华人民共和国建设部. JG/T 50721—1996电梯T型导轨［S］. 北京: 中国标准出版社, 1996．
［8］ 崔甫. 论弹塑性弯曲与曲率关系［J］. 重型机械，1994(3): 2328．
CUI Pu. Research on the relationship of elasticplastic bending and curvature ［J］. Heavy Machinery， 1994(3): 2328．
［9］ 钦明浩, 柯尊忠, 张向军, 等.精密矫直机中轴类零件矫直工艺理论研究［J］.机械工程学报, 1997,33(2):4853．
QIN Minghao, KE Zunzhong, ZHANG Xiangjun, et al. Study on straightening technical theory of shaftkind in exact straightening press ［J］. Chinese Journal of Mechanical Engineering， 1997,33 (2): 4853．
［10］ 任重. ANSYS实用分析教材［M］. 北京:北京大学出版社, 2003:3357．
No related articles found!