自动钻机接扣过程同轴度误差补偿的研究  

Research on Compensation of Coaxiality Error in Connecting Process of Automatic Drilling Rig

作　　者：王清峰 金流丞[1,2,3] 辛德忠 Wang Qingfeng;Jin Liucheng;Xin Dezhong(Chongqing Research Institute,China Coal Technology and Engineering Group,Chongqing 400039,China;StateKey Laboratory of Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037,China;China Coal Research Institute,Beijing 100013,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400037 [3]煤炭科学研究总院,北京100013

出　　处：《煤矿机械》2019年第12期44-46,共3页Coal Mine Machinery

基　　金：重庆市科技创新领军人才支持计划(CSTCCXLJRC201709);重庆市重点产业共性关键技术创新专项重点研发项目(cstc2017zdcy-zdyfX0050);国家重点研发计划项目(2018YFC0808000)

摘　　要：自动钻机接扣过程中由于主动钻杆与工作钻杆间存在同轴度误差,导致主动钻杆螺纹磨损速度快,使用寿命短。减小同轴度误差或对该误差进行补偿可减小接扣过程中螺纹的磨损。矿山机械因其制造和使用特点,采用提高精度的方法减小同轴度误差成本较高,不适合工程应用。提出通过增加弹性垫片减小结构刚度,运用主动钻杆的弯曲变形与弹性垫片压缩引起的钻杆端部变形实现同轴度误差补偿,并给出垫片厚度的计算公式。试验结果表明,运用该方法后主动钻杆的螺纹寿命得到有效延长。Because of coaxiality error between active drill pipe and working drill pipe,thread wear of active drill pipe is fast and its service life is short.Reducing the coaxiality error or compensating the coaxiality error can reduce the thread wear in the process of fastening.Because of its manufacturing and using characteristics,the cost of reducing coaxiality error by improving accuracy is high,which is not suitable for engineering application.The coaxiality error compensation was realized by increasing the elastic gasket to reduce the structural stiffness,using the bending deformation of the active drill pipe and the deformation of the end of the drill pipe caused by the compression of the elastic gasket,and the calculation formula of the thickness of the gasket was given.The experimental results show that the threading life of the active drill pipe can be effectively prolonged by using this method.

关 键 词：钻杆 同轴度误差 自动接扣 刚度 变形 

分 类 号：TD41[矿业工程—矿山机电]