Analysis of Anti-eccentric Load Characteristics of Hydraulic Cylinder Hydrostatic Supports

doi:10.3969/j.issn.1004-132X.2020.18.004

Abstract

Abstract: The anti-eccentric load characteristics of the hydrostatic supports of the hydraulic cylinders were studied, the lubrication performance and leakage characteristics of the hydrostatic support hydraulic cylinders were analyzed, the pressure field characteristics of the oil films were simulated by using FLUENT software, and the anti-eccentric load characteristics of the hydrostatic supports of the hydraulic cylinders were analyzed. The oil film characteristics of the rectangular and I-shaped oil chambers of the hydrostatic bearing guide sleeves were analyzed and compared. The relationship among velocity, eccentricities, inlet flows of the hydraulic cylinders and bearing capacities, leakages and lubrications of the hydrostatic bearing guide sleeves were studied. An experimental platform was built to measure the eccentricity distance of the piston rod by using eddy current sensor, and the anti-eccentric load performance with hydrostatically supported hydraulic cylinders and without hydrostatically supported hydraulic cylinder was compared.

Key words: hydraulic servo, hydraulic cylinder, guide sleeve, hydrostatic bearing, anti-eccentric load

摘要： 对液压缸静压支承抗偏载特性进行了研究，分析静压支承液压缸的润滑性能与泄漏特性，利用FLUENT软件对油膜的压力场特性进行仿真分析，分析液压缸静压支承的抗偏载特性；对静压支承导向套的矩形和工字形油腔的油膜特性进行分析对比，研究液压缸运动速度、偏心量、入口流量与静压支承导向套的承载力和润滑性能之间的关系；搭建实验台，利用电涡流传感器测量活塞杆的偏心距离，对静压支承液压缸与无静压支承液压缸的抗偏载性能进行对比。

关键词: 液压伺服, 液压缸, 导向套, 静压支承, 抗偏载

CLC Number:

TH137.51

SHAO Junpeng；XU Longfei；SUN Guitao. Analysis of Anti-eccentric Load Characteristics of Hydraulic Cylinder Hydrostatic Supports[J]. China Mechanical Engineering, DOI: 10.3969/j.issn.1004-132X.2020.18.004.

邵俊鹏；徐龙飞；孙桂涛. 液压缸静压支承抗偏载特性分析[J]. 中国机械工程, DOI: 10.3969/j.issn.1004-132X.2020.18.004.

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