既有线线路道床大修以大型清筛机施工为主,但道岔大修、路基大修等挖出道床作业却无法使用清筛机机械清筛,而使用挖掘机开挖道床、路基等即确保了施工质量,又确保了施工进度,克服了人工清筛的不足,取得了较好的成效。 Existing line track overhaul to large-scale cleaning machine construction-based, but the overhaul turnout, roadbed overburning and other digging out of bed operations can not use the mechanical screening of the cleaning machine, excavation of the bed using excavators, such as roadbed to ensure the construction quality , But also to ensure the progress of construction, to overcome the lack of manual cleaning, and achieved good results.