Gas extraction from coal mine drilling , is in need of a kind of automatic and intelligent drilling rig instead of workers engaged in the kind of high strength , high risk work .By analyzing the common rotary drilling rig drilling operations , decomposing the motion of the robot according to the principle of action and structure of the manipulator , the hydraulic system of the manipulator is de-signed.Through calculation of the pressure and flow of the manipulator system , the pump and multi-way valve and other key hydraulic components were selected .From the scene debugging and industrial experiment , the effect of hydraulic system runs stably , the all actu-ators react rapidly with motion in coordination , which has reached the design requirements .%煤矿井下瓦斯抽采钻孔,需要一种自动化、 智能化的钻机来代替工人从事高强度、 高危险性的工作.通过分析普通回转钻机的钻孔操作,对机械手的动作进行分解,根据机械手的动作和结构原理,设计了机械手的液压系统.通过机械手系统的压力和流量计算,对泵和多路阀等关键液压元件进行了选型.从现场调试实验和工业性实验的效果来看,所设计的液压系统运行稳定,各执行机构反应迅速,动作协调,达到了设计要求.
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