基于图乘法大吨位门式起重机跨中挠度预测的研究

张大鹏; 程文明; 蔡锟

doi:10.13433/j.cnki.1003-8728.2015.1017

基于图乘法大吨位门式起重机跨中挠度预测的研究

doi: 10.13433/j.cnki.1003-8728.2015.1017

张大鹏^1,2,
程文明^1, ,,
蔡锟¹

1.
西南交通大学机械工程研究所, 成都 610031;
2.
绵阳师范学院, 绵阳 621000

基金项目:

中央高校基本科研业务费专项资金项目(2010ZT03)、国家自然科学基金项目(51175442)、国家质量监督检验检疫总局科技计划项目(2010QK02)及绵阳师范学院科研项目(QD2012A09)资助

详细信息

作者简介:
张大鹏(1975-),副教授,博士研究生,研究方向为起重运输与矿山机械检测及故障诊断,zdp51368@163.com

通讯作者:
程文明,教授,博士生导师,wmcheng@swjtu.edu.cn

计量
- 文章访问数: 374
- HTML全文浏览量: 25
- PDF下载量: 9
- 被引次数: 0
出版历程
- 收稿日期: 2013-07-30
- 刊出日期: 2015-10-05

Deflection Prediction for Large Tonnage Gantry Crane Girder Midspan Base on Diagram Multiplication Method

1.
Research Institute of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2.
Mianyang Normal University, Mianyang 621000, China

摘要

摘要: 门式起重机承受额定载荷时主梁跨中的下挠值是门式起重机整机试验的最重要检测指标。对于大吨位门式起重机整机实验时,实验砝码现场准备往往十分困难,甚至无法进行整机实验检验。针对门架结构考虑了支腿弯矩对主梁挠度影响的情况,推导出集中载荷在主梁L/2、L/3、L/4处作用时的挠曲线方程,通过测量小载荷分别在L/2、L/3、L/4处作用的主梁下挠值,求得主梁和两侧支腿的实际惯性矩,从而可以预测门式起重机额定载荷时主梁的下挠度。主梁三位置小载荷实验法为预测大吨位门架结构主梁挠度提供了实用有效的方法。
- 图乘法 /
- 门架结构 /
- 主梁 /
- 预测 /
- 挠度
Abstract: The deflection value of gantry crane girder under rated load is the most important inspection index in the overall test. For large tonnage gantry crane, it is often very difficult to prepare the experimental weight on site of the overall test or even impossible to perform the test. In this study, the girder deflection curve equation considering the effects of the leg bending moment on the girder deflection is deduced with the concentrated load applying to the position of L/2、L/3、L/4 of the girder. The girder deflection value can be obtained under small load at the position of L/2、L/3、L/4 of the girde, and the actual inertia moment of the girder and the two side legs can be obtained. In this way, the deflection of the large tonnage gantry crane is predicted through the data of the three-position method in the small load test. The three-position small load test method provides a practical and effective method for the prediction of the girder deflection of large tonnage gantry structure.
- beams and giraders /
- calculations /
- deflection(structures) /
- diagram multiplication method /
- efficiency

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参考文献(16)

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