多年来,在钻探施工升降钻具过程中,经常发生钻杆折断事故,对钻工的生命安全和国家财产造成很大威胁。为消灭这一重大事故隐患,我们试制成功了直握式4811安全吊卡器。该装置具有代替手扶钻杆或用螺丝刀插入锁接手内径扶正钻杆的用途;并在钻杆折断时,将折断的钻杆上部吊住,防止下 Over the years, drill pipe breaking accidents have been frequently occurred during the drilling and lifting of drilling rigs, posing a great threat to the life safety of drillers and state property. In order to eliminate the hidden dangers of this major accident, we trial-produced a successful straight-type 4811 safety elevator. The utility model has the utility of replacing the handheld drill pipe or the inner diameter of the lock handle with a screwdriver to correct the drill pipe; and when the drill pipe breaks, the upper part of the broken drill pipe is suspended and prevented