分析了目前国内外各种钻杆接卸装置的研究现状及其工作性能的优缺点,提出了新的全液压接卸钻杆装置的设计方案。并根据潜孔钻机钻孔过程的工况要求及其工作性能对凿岩品质的影响,设计了性能优越的卡杆油缸和液压控制系统。实践表明,该机构接卸方便、卸杆效率高、安全性好,有效地提高了钻杆的使用寿命。 The current research status and the advantages and disadvantages of various drill pipe handling devices at home and abroad are analyzed. The design scheme of the new hydraulic hydraulic drill rod device is proposed. According to the requirements of working conditions of the drilling process of DTH drilling rig and the influence of its working performance on the rock drilling quality, a rod clamping cylinder and a hydraulic control system with superior performance are designed. The practice shows that the mechanism is convenient for loading and unloading, has high discharging efficiency and good safety, and effectively increases the service life of the drill pipe.