动力头式钻机钻进过程中钻塔塔腿受力的分析

Analysis of the Forces Exerted on the Derrick Legs of The Top Drive Drill Rig While Drilling

分析了动力头式钻机之钻塔在钻进过程中，所受回转钻具的反扭矩与给进架给进力而造成的翻转力矩作用下的受力情况。

An alalysis is given the force-bearing condition of the derrick of the top-drive drill rig under ac-tion of the twisting moment exerted by the rotating drill tools and the turn-over moment resulted from pulldownof the feed frame while drilling.