介绍了一种定向钻机大推力给进系统的设计方案,包括给进系统的结构设计、受力分析及导轨计算,推进液压缸选型计算与稳定性校核,液压原理及给进速度计算。通过钻机工业性试验,对设计方案的使用效果进行了验证。结果表明,该给进机构运行平稳,可靠性高,为钻机给进系统的设计提供了一种新的结构和思路。 A design scheme of large thrust feeding system for directional drilling rig is introduced, including structural design of feed system, force analysis and guideway calculation, propulsion hydraulic cylinder selection calculation and stability check, hydraulic principle and feed speed calculation. Through rig industrial test, the effect of design scheme is verified. The results show that the feed mechanism runs smoothly and has high reliability, which provides a new structure and train of thought for the design of the rig feed system.