中国机械工程2025，Vol.36Issue(11)：2525-2536,12.DOI:10.3969/j.issn.1004-132X.2025.11.007
轴向柱塞泵织构化柱塞副低压程润滑特性研究
Research on Lubrication Characteristics of Textured Piston-cylinder Pairs of Axial Piston Pumps under Low-pressure Stroke
摘要
Abstract
The lubrication states of piston-cylinder pairs were the key to determining the service life of axial piston pumps.Therefore,a textured piston-cylinder pair was proposed to reduce the failure risk of oil film under low-pressure stroke.A textured lubrication model for piston-cylinder pairs was established based on a dynamic node mesh to address the variable support length of piston.Besides,the pressure equa-tion was discretized by using a finite difference method,the pressure and thickness distribution of oil films were obtained by a double-layer cycle of film pressure and eccentricity.The influences of working param-eters and texture parameters on lubrication characteristics were analyzed.The results show that the greater the texture radius and texture area ratio,the better the antifriction effectiveness,and the order of the effect in reducing friction(from high to low)is:texture area ratio,texture radius,texture depth.Both increasing the texture radius and decreasing the texture depth may enhance the bearing capacity of oil film,and a tex-ture area ratio of 30%has higher adaptability.Combined with loading test,the maximum reduction in fric-tion coefficient of textured specimen compared to that of non-textured specimen is as 29.8%.The results may provide some references for frictional design of axial piston pumps.关键词
轴向柱塞泵/织构化柱塞副/润滑特性/低压程/偏心量Key words
axial piston pump/textured piston-cylinder pair/lubrication characteristics/low-pressure stroke/eccentricity分类
机械制造引用本文复制引用
罗刚,何涛,王传礼,赵凯平,郑浩..轴向柱塞泵织构化柱塞副低压程润滑特性研究[J].中国机械工程,2025,36(11):2525-2536,12.基金项目
国家自然科学基金(52205041) （52205041）
安徽省高校优秀青年人才支持计划(gxyq2022017) （gxyq2022017）
矿山智能装备与技术安徽省重点实验室开放基金(ZKSYS202101) （ZKSYS202101）
安徽省矿山智能技术与装备科研创新团队(2022AH010052) （2022AH010052）
安徽省新时代育人质量工程项目(2023cxcysj087,2024xscx074) （2023cxcysj087,2024xscx074）
