目前,在我国露天矿山的穿孔作业中,牙轮钻机作为一种高效穿孔设备,作用越来越大。实践证明,牙轮钻机的使用与管理对其效率的发挥有着很大的影响。本文试图通过对国产KY—310高钻架牙轮钻机、低钻架牙轮钻机及美国B—E公司的45R牙轮钻机的生产效率、维修工作量及常见故障的分析比较,进而对国 At present, in the perforation work of open-pit mines in our country, the cone-wheel drilling rig has an increasing role as an efficient perforation equipment. Practice has proved that the use and management of the roller rig has a great impact on its efficiency. This paper attempts to analyze and compare the production efficiency, maintenance workload and common faults of the domestic KY-310 high-rack-mounted cone-roller rig, low-rack cone-roller rig and the 45R roller bushing of the United States B-E Company,