摘要
介绍一种用于回收井下巷道支护锚杆的专用扳手的开发,设计和在井下现场的使用效果。该锚杆回收扳手由压气驱动,在给可回收锚杆的尾部提供反扭矩的同时,还可以承受拉力。
This paper presents the development, design and performances of a specialized wrench for retrieving bolts which are used to support the longwall headings. The compressed air powered wrench is capable of providing reverttorque to retrievable bolt end and sustain drag force.
出处
《煤矿机械》
北大核心
2005年第9期90-91,共2页
Coal Mine Machinery
关键词
锚杆
风动扳手
拉力
bolts
compressed air powered wrench
drag force
