【摘要】 论述了ＺＳＭ－２５０型顺层强力钻机的设计方案和液压传动方式，介绍了钻机的结构特点、性能测试和工业性试验情况更多还原

【Abstract】 Abstract The design plan and hydraulic driving mode of model ZSM-250 in-seam powerful drill are dealt with in the paper.The features in structure,performance test and full-scale test are also included.更多还原