引言本文着重介绍了桥式起重机主梁严重下挠,而用火焰矫正法来修复的经过,仅供同行参考。一、问题的分析本厂的桥式起重机由于长期大负荷运转,加之厂内工作环境恶劣,长期处于高温的环境中,使车体变形严重,主梁严重下挠,造成小车由跨中向跨端运行,出现爬坡现象,导致小车电机多次烧损,而当小车由跨端向跨中运行时,小车停不稳,自行滑移。另一方面大车的传动系统 Introduction This article focuses on the serious downward deflection of the main girder of a bridge crane and the repair by flame correction, which is for reference only by your colleagues. First, the problem analysis Our long-term overhead crane truck operation, combined with poor working conditions in the factory, long-term high temperature environment, the serious deformation of the car body, the main girder serious under the torsion, resulting in the car by the inter-to-span End running, climbing phenomenon occurs, resulting in multiple burning motor car, and when the car from span to cross-run, the car stopped unstable, slip on their own. On the other hand the cart’s transmission system