桥式起重机主梁下挠的原因及矫正方法  

Cause Analysis of Down Deflection on Bridge Crane & Its Reparation

作　　者：许健[1] 

机构地区：[1]宝钢集团八钢公司设备工程部

出　　处：《新疆钢铁》2010年第2期41-44,共4页Xinjiang Iron and Steel

摘　　要：针对引起桥式起重机主梁下挠的原因,以及主梁下挠后给起重设备使用带来的影响和危害,通过预应力的矫正方法,对部份主梁下挠不严重且未达到参考值的,恢复起重机主梁上拱度,使起重机能够正常使用,进一步延长使用寿命,从而达到降低运行成本的目的。According to the cause of main girder deflection of bridge crane,and the influence and harm which the de-flection brings to lifting equipment,this article has described howto make the crane work properly by prestressed correc-tion method.This solution will restore the main girder camber of crane,where the defection meets neither the serious limit nor the reference value,further to prolong crane＇s service life so as to achieve lower costs.

关 键 词：下挠原因 使用影响 矫正方法 

分 类 号：TH215[机械工程—机械制造及自动化]