1.前言本文介绍起重机主梁异常状态的检测方法,是防止起重机故障所采取的改进措施之一。过去,发现起重机主梁异常状态的方法是在年度检查时测定上拱度、下挠度和复原量。但是对于大型起重机,重锤的准备时间长,影响生产,而且在高处测定有危险;加之测定精度等问题,使起重机主梁异常状态的考察不可 1. Preface This article describes the crane girder abnormal state detection method is to prevent the crane failure to take one of the improvements. In the past, the method of detecting the abnormal condition of the crane girder was to determine camber, deflection and recovery at annual inspection. However, for large cranes, heavy hammer preparation time, affecting the production, but also dangerous to determine the height; coupled with the measurement accuracy and other issues, so that abnormal inspection of the crane girder can not