煤矿用钻杆螺纹体强度分析  

Analysis on strength of screw thread of colliery-used rill pipe

作　　者：阮绍刚[1,2] RUAN Shaogang(Chongqing Research Institute, China Coal Technology ＆ Engineering Group, Chongqing 400039, China National Key Laboratory of Gas Disaster Detecting, Preventing ＆ Emergency Controlling, Chongqing 400039, China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039 [2]瓦斯灾害监控与应急技术国家重点实验室,重庆400039

出　　处：《矿山机械》2017年第2期6-9,共4页Mining & Processing Equipment

摘　　要：针对煤矿用钻杆连接螺纹体在正紧密距状态下,使用过程中螺纹体发生塑性变形而粘扣,导致频繁出现难于拆卸的问题,从理论上分析了钻杆连接螺纹体在不同紧密距下的受力情况和转矩情况,指出螺纹体紧密距是煤矿用钻杆圆锥螺纹无法拆卸的最大影响因素。In view of difficult disassembly of the screw thread of the colliery-used drill pipe due to plastic deformation in positive stand-off state, the paper theoretically analyzed the stress and the torque state of the screw thread of the drill pipe at various stand-off. It also indicated the stand-off of the screw thread was the dominating factor resulting in failed disassembly of the conical screw thread of the colliery-used drill pipe.

关 键 词：煤矿用钻杆 螺纹紧密距 受力分析 螺纹体 

分 类 号：TD421[矿业工程—矿山机电]