液压支架底座柱窝结构的失效原因及改进措施

Failure Causes and Improvement Measures of Hydraulic Support Base Column Socket Structure

为了解决液压支架正常工作寿命内由于底座柱窝周围焊缝开裂导致底座柱窝结构失效问题,通过统计某矿区近15 a液压支架质量问题,研究分析了底座柱窝结构失效原因及维修措施,对底座柱窝结构进行了优化及改进,指出底座柱窝增加箱形结构或者增加底座柱窝与主肋的焊缝数量以降低底座底板对柱窝受力的分担比例是提高柱窝结构使用寿命的有效措施,为工作寿命要求高的液压支架底座柱窝结构的设计提供了参考。

In order to solve the failure problem of the base column socket structure caused by the weld cracking around the base column socket during the normal working life of the hydraulic support,the base column socket structure was optimized and improved after the statistical research on the quality problems of the hydraulic support in a mining area in recent 15 years and the analysis on the causes of the failure of the base column socket structure and the maintenance measures.It was pointed out that the effective measures to improve the service life of the column socket structure are to increase the box structure of the base column socket or increase the number of welds between the base column socket and the main reinforcement to reduce the share ratio of the base plate to the column socket force,which provides a reference for the design of the base column socket structure of hydraulic support with high working life requirements.