钻探工程2025，Vol.52Issue(4)：75-80,6.DOI:10.12143/j.ztgc.2025.04.010
中空螺杆取心钻具中空万向节力学分析
Mechanical analysis of hollow universal joint in hollow screw core drilling tool
摘要
Abstract
The hollow universal joint is one of the vulnerable components in hollow screw coring drill tools,directly affecting their service life.Based on the traditional solid flexible shaft universal joint,a hollow design was implemented.Finite element software was employed to conduct mechanical analysis of the hollow universal joint,investigating the influences of mechanical and geometric parameters on its mechanical performance.Results showed that compared to conventional flexible shaft universal joints,the hollow universal joint with grouting holes exhibited higher stress and strain at the grouting hole locations,making them prone to damage and failure.The stress distribution in other regions remained consistent with hollow universal joints of the same dimensions without grouting holes,indicating that grouting holes did not alter stress conditions in non-hole areas.Stress demonstrated a proportional relationship with torque,while strain increased with torque but exhibited a diminishing growth rate as torque rose,following a nonlinear pattern.When the grouting hole was positioned 250 mm from the end face,both stress and strain reached minimum values,identifying this configuration as the optimal design.These findings establish a foundation for subsequent development of high-performance hollow universal joints.关键词
中空螺杆/取心钻具/中空万向节/力学分析/优化设计Key words
hollow screw/core drilling tools/hollow universal joint/mechanical analysis/optimal design分类
地质学引用本文复制引用
韩泽龙,赵明,张欣,田英英,王林浩,陈晓君..中空螺杆取心钻具中空万向节力学分析[J].钻探工程,2025,52(4):75-80,6.基金项目
中国地质调查局地质调查项目"深海钻探工程关键技术支撑"(编号:DD20221721) （编号:DD20221721）
