摘要
在拧卸钻杆时为了保护动力头钻杆接头,防止其磨损,通常的做法是在该接头处联接一个保护接头。设计了一种防松器,在卸扣时防止保护接头与动力头钻杆接头脱开。这种防松器结构简单,使用方法简便。
A protecting joint is added at power head rod joint in order to prevent power head rod joint abrasion when rod is screwed or unscrewed. A preventing loose machine is designed. It can prevent protecting joint and power head rod joint from disjoining when rod is screwed or unscrewed. The structure of machine is simple, the used method is convenient.
出处
《煤矿机械》
北大核心
2008年第7期170-171,共2页
Coal Mine Machinery
关键词
防松器
保护接头
动力头
便携式钻机
preventing loose machine
protecting joint
power head
portable drilling rig
