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旋挖钻机随动架是钻杆上部的辅助支撑装置,可沿桅杆导轨上、下滑动,对钻杆起固定和导向作用。若随动架组装、使用不当,将造成回转支承断裂等故障。本人结合多年来的经验,总结出随动架回转支承断裂的原因及预防措施。1.回转支承断裂原因随动架主要由支架、回转支承、卡槽、销轴、螺栓等构成,如图1所示。回转支承在工作中,一般要承受轴向力、径向力以及倾覆力矩的共同作
Rotary drilling rig follower frame is an auxiliary support device on the upper part of the drill pipe. It can slide up and down along the mast rail to fix and guide the drill pipe. If follow-up rack assembly, improper use, will result in rupture of slewing bearings and other failures. Based on my experience over the years, I summarized the causes and preventive measures for the rupture of the rotary support frame. 1. Rotary support fracture reasons follower frame mainly by the bracket, slewing ring, card slot, pin, bolt, etc., as shown in Figure 1. Slewing bearings in the work, the general to bear the axial force, radial force and overturning moment together