电液伺服摆动马达密封结构研究  

Research on Sealing Structure of Electro-hydraulic Servo Swing Motor

作　　者：李阁强[1] 赵巧莉 李跃松[1] 郭冰菁[1] 

机构地区：[1]河南科技大学机械装备先进制造河南省协同创新中心,河南洛阳471003

出　　处：《润滑与密封》2015年第4期9-13,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(51175148)

摘　　要：为研究电液伺服摆动马达密封结构的性能,建立其密封件的有限元仿真模型,在相同预压缩量、不同介质压力条件下,对矩形密封结构、梯形密封结构、星形密封结构进行仿真分析,根据仿真结果比较3种密封结构的密封效果。结果表明,星形密封结构因其截面有4个密封唇,在沟槽中不易产生扭曲,耐压力较强,其密封有效性优于矩形密封结构,更适合用于大功率液压密封系统;梯形密封结构在靠近流体端具有较陡的压力梯度,在一端具有较缓的压力梯度,可以减小油膜厚度,从而减少泄漏量,因而其密封效果优于星形和矩形密封。The finite element simulation model of the sealing structure of electro-hydraulic servo swing motor was established to study the performance of sealing structure. Three kinds of sealing structures, the rectangular sealing structure, the trapezoidal sealing structure, the star sealing structure were investigated by simulation method under the conditions of the same pre-compression and different medium pressure, and the sealing effect of three kinds of sealing structures were compared according to the results of simulation analysis. The results show that the star seal structure has four sealing lips on the cross-section and can avoid the distortion of seal structure in the groove, its sealing effectiveness is better than the rec- tangular seal structure and it is more suitable for high-power hydraulic sealing system. For the trapezoidal seal structure has a steeper pressure gradient near the fluid end and a moderate pressure gradient at one end, the leakage is reduced, and good sealing effect is achieved compared with the star and rectangular seal structure.

关 键 词：矩形密封 梯形密封 星形密封 电液伺服马达 

分 类 号：TH136[机械工程—机械制造及自动化]