液压缸导向套间隙密封仿真分析
Simulation and analysis on gap seal of the hydraulic cylinder support guide bush
曾永龙 1姚成君 2陈奎生 3邓攀1
作者信息
- 1. 武汉科技大学机械自动化学院,武汉 430080;武钢研究院,武汉 430080
- 2. 武钢研究院,武汉 430080
- 3. 武汉科技大学机械自动化学院,武汉 430080
- 折叠
摘要
研究了在液压缸活塞导向套内开3个支承油槽的间隙密封技术,支承油槽采用工字腔与环形槽相结合的结构.利用Proe和Fluent软件对支承油槽的流场特性进行仿真,从理论计算、仿真分析2方面对导向套支承油膜的压力分布、泄漏量和摩擦力特性进行了分析.通过与矩形静压油腔对比,采用工字形腔和环形槽可使活塞杆360度均有静压支承油液,实现活塞杆的自纠偏,有利于提高活塞杆的对中性能;同时在相同的条件下,工字形油腔可获得较小的摩擦力和泄漏量,有利于提高液压缸的动态性能.
Abstract
A new type of guide bush for hydraulic cylinder piston was designed,which consisted of three hydrostatic Support oil tanks inside by using the gap seal.The oil tank was composed of I-shaped cavity and the annular groove.From two aspects of theoretical calculation and simulation analysis, the pressure distribution, leakage and friction characteristics of hydrostatic supporting oil film were analyzed by using fluid simulation software.Compared with a rectangular structure oil cavity, the annular groove could make the piston rod 360 degrees around the static pressure bearing oil, and the I-shaped cavity could make the piston rod self-correcting.At the same time, the I-shaped cavity could obtain a small amount of friction and leakage under the same conditions, which was more conducive to improve the system dynamic performance.
关键词
导向套/静压支承/间隙密封Key words
guide bush/hydrostatic Support/gap seal引用本文复制引用
出版年
2017
NETL
NSTL
维普
万方数据