Technological Upgrading of ML900-43 Girder Crane for Beijing-Shanghai Express Railway Construction

This paper introduces the background information of technological upgrading of the height of beam hoist in Beijing-Shanghai express railway project,analyzes the specific steps of the upgrading process,the stability of press bar and the overall stability after upgrading,and the key points in safety and techniques during upgrading,which aims at offering reference and experience for similar technological upgrading in the future.