高强度绳索取芯钻杆接头螺纹强度分析

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英文篇名：Thread Strength Analysis of High Strength Wire-line Coring Drill Rod Joint 作者：魏欢欢 英文作者：Wei Huanhuan;Xi'an Research Institute, China Coal Technology and Engineering Group; 关键词：螺纹强度 ; 绳索取芯 ; 高强度 ; 钻杆 ; 有限元分析 英文关键词：thread strength;;wire-line coring drilling;;high strength;;rod;;finite element analysis 中文刊名：MKJX 英文刊名：Coal Mine Machinery 机构：中煤科工集团西安研究院有限公司; 出版日期：2019-03-15 出版单位：煤矿机械 年：2019 期：v.40;No.373 基金：陕西省科技统筹创新工程计划项目(2016ZX05045001-002) 语种：中文; 页：MKJX201903026 页数：3 CN：03 ISSN：23-1280/TD 分类号：78-80

摘要

绳索取芯钻杆壁薄,坑道水平孔施工时,受重力影响,易振动,钻杆与孔壁摩擦造成钻杆损坏。新研制的高强度绳索取芯钻杆采用杆体与公、母接头焊接的结构形式,公、母接头加厚来提高强度。针对钻杆的接头螺纹部位易损坏的现状,建立公、母接头的轴对称分析模型,经过网格划分、约束、载荷的添加和数据分析,得到钻杆在拉扭、压扭载荷作用下应力分布情况,分析结果显示,钻杆公、母接头强度满足强度要求。
        The wire-line coring drill rod is easy to vibrate under the influence of gravity in tunnel horizontal hole construction because of its thin wall, the friction between rod and hole wall causes the damage to the rod. The newly developed high strength wire line drill rod adopts the structure which welds the rod and the male and female joints and thickens the male and female joints to improve the strength. Aiming at the present situation that the joint threads of rod are easy to be damaged, an axisymmetric analysis model of the joint was established, After meshing, constraint, load addition and data analysis, the stress distribution of the rod under the pull torsion load and compression torsion load was obtained, and the results shows that the strength of the male and female joints of the rod meets the strength demand.

引文

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