杆内自锁式正反转钻杆的研究

Study on Self-locking Forward and Reverse Drill pipe in Rod

煤矿用钻机钻孔所用的钻杆大多数为锥螺纹接头联接,其对中性好,能满足单向旋扭工况,但不能反向旋转。研究一种新型杆内自锁正反转钻杆结构,实现螺纹副联接机械自锁和钻杆机械自动解卡,从后至前一次解卡,钻杆联接刚性好、承载扭矩大、稳定性好,能满足钻杆自动加接要求。

Most of the drill pipes used by coal mine drilling rigs are connected by conical thread joints,which have good alignment and meet the working condition of one-way rotation and torsion,but can not rotate in reverse.A new type of self-locking forward and reverse drill pipe structure in the rod was studied to realize the mechanical self-locking of thread pair connection and the automatic release of drill pipe machinery.From the back to the previous releases,the drill pipe connection has good rigidity,large bearing torque and good stability,which can meet the requirements of automatic addition of drill pipe.