文章摘要
张大鹏,程文明,蔡 锟.大吨位铰接支腿门式起重机挠度的预测[J].润滑与密封,2014,39(6):99-102
大吨位铰接支腿门式起重机挠度的预测
  
DOI:10.3969/j.issn.0254-0150.2014.06.019
中文关键词: 门式起重机  铰接支腿  挠度  预测
英文关键词: gantry crane  hinged connection outrigger  deflection  prediction
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).
作者单位E-mail
张大鹏 西南交通大学 机械工程研究所 zdp51368@163.com 
程文明 西南交通大学 机械工程研究所  
蔡 锟 西南交通大学 机械工程研究所  
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中文摘要:
      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。针对铰接式门架结构,考虑支腿弯矩对主梁挠度的影响,推导出集中载荷在主梁跨中处作用时的挠曲线方程。通过分别测量三次小载荷在跨中处作用的主梁下挠值,求得门架结构主梁挠曲线方程系数,从而预测大吨位铰接式门式起重机额定载荷时主梁的下挠度。三次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。
英文摘要:
      The deflection value of the gantry crane girder is the most important inspection index in the overall test under rated loadFor the overall test of large tonnage gantry crane,the preparation of the experimental weight at the site is often very difficult,or even the overall test is impossible to performConsidering the effects of the leg bending moment on the girder deflection,the girder deflection curve equation of hinged gantry structure was deduced when the concentrated load was applied to the position of the girder midspanThrough measuring the girder deflection values when exerting three small loads at the girder midspan,the coefficients of gantry frame girder flexural equation were obtained,and the deflection of the large tonnage gantry crane was predictedThe three small loads method provides a practical and effective method for the prediction of the girder deflection of large tonnage gantry structure.
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