摘要
通过设计不同的减摩润滑结构并比较油膜特性,研究不同的减摩润滑结构对伺服液压缸克服径向载荷、减小摩擦的影响,得出减摩润滑结构的最佳形状结构,并进行试验验证。在减摩润滑矩形结构的基础上,提出了工字形结构和梯形结构,并对其进行理论分析和流场模拟,得到了不同减摩润滑结构的压力分布和承载能力特性曲线。梯形的减摩润滑结构可以提供更大的承载能力,油膜温升更小,该减摩润滑结构能有效克服活塞杆上的径向载荷,降低伺服液压缸的摩擦。研究结果表明,不同减摩润滑结构的油膜特性不同,克服偏载能力不同,均能不同程度降低伺服液压缸的摩擦,提高伺服液压缸的控制精度和使用寿命。
By designing different anti-friction lubricating structures and comparing the oil film characteristics,the influence of different anti-friction lubricating structures on the servo hydraulic cylinder to overcome the radial load and reduce the friction is studied,the best shape structure of anti-friction lubricating structure is obtained,and tests are verified.Based on the rectangular structure of anti-friction lubricating,I-shaped structure and trapezoidal structure are proposed.The pressure distribution and bearing capacity characteristic curves of different anti-friction lubricating structures are obtained by theoretical analysis and flow field simulation.The anti-friction lubricating structure of trapezoidal structure can provide more bearing capacity,and the temperature rise of oil film is smaller.The anti-friction lubricating structure can effectively overcome the radial load on the piston rod and reduce the friction of the servo hydraulic cylinder.The results show that the oil film characteristics of different anti-friction lubricating structures are different,which can effectively overcome the partial load,greatly reduce the friction of the servo hydraulic cylinder,and improve the control precision and service life of the servo hydraulic cylinder.
作者
马丽楠
王伟
陈峙
马占江
安高成
MA Li'nan;WANG Wei;CHEN Shi;MA Zhanjiang;AN Gaocheng(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan,Shanxi 030024;State Key Laboratory of Fluid Power&Mechatronic Systems,Zhejiang University,Hangzhou,Zhejiang 310027;Shanxi Pingyang Industry Machinery Co.,Ltd.,Linfen,Shanxi 043003)
出处
《液压与气动》
北大核心
2025年第8期89-103,共15页
Chinese Hydraulics & Pneumatics
基金
全国重点实验室开放基金(GZKF-202322)。
关键词
径向载荷
静压支承
摩擦
油膜
液压缸
radial load
hydrostatic bearing
friction
oil film
hydraulic cylinder
