The latest improvement to the underground scraper swing frame of WJD-1

In this paper, In analyzing underground scraper swing frame of WJD-1 structure and the work on the basis of principle, The use process,Swing frame of WJD-1 emerging issues, Reference WJD-1.5 and WJD-2 Underground swing frame, Redesigned a new type of swing frame, The test and put into production and application