桥式起重机中的主梁结构在长期应用过程中受各项因素影响会发生变形，变形问题无法完全避免，对于主梁结构出现的变形问题

Bridge crane main girder deflection detection and correction methods I. Bridge (gantry) crane main girder deflection detection in the bridge (gantry) crane safety inspection, the main girder arch detection is a very important content. jb1036-82 (general bridge...