液压传动工作介质抗磨性试验台设计与研究

发布时间：2018-08-20 12:00

【摘要】：液压传动具有功率质量比大、可实现无级调速、操纵控制方便等优点而被广泛应用于工业生产及日常生活领域。液压传动工作介质是液压系统的重要组成部分,它将系统中的各类元件有机的连接起来构成一个整体,实现信号和能量的传递,并具有防锈、冷却、润滑等作用。液压系统能否有效、可靠而且经济地工作,在很大程度上取决于液压传动工作介质的性能。液压传动工作介质不仅要有合适的粘度,良好的防锈性、抗乳化性、氧化稳定性和相容性,更重要的是具有优良的抗磨性能,以最大程度地减少液压系统中元件摩擦副的磨损,延长液压元件及系统的使用寿命,提高液压系统的能源利用率。随着液压系统工作压力的不断提高和新型液压传动工作介质的不断应用,传统液压油抗磨性试验台已不能满足液压传动技术快速发展需要。本论文在传统液压油抗磨性试验台的基础上,采用高压液压泵构建高压抗磨性试验系统并充分考虑新型液压传动工作介质的物理化学特性,分析其抗磨性产生的机理,重点对试验台的液压控制系统、数据采集系统和测试系统的界面进行了分析和设计。本论文首先介绍了液压传动工作介质的分类和常用抗磨性试验装置及要求,针对传统液压油的抗磨性试验台,分析指出了其存在的问题。其次简述了试验泵的磨损系统及摩擦副的磨损形式,并针对不同种类的液压传动工作介质及其添加剂进行抗磨性机理分析。然后根据液压传动技术的最新发展对试验液压泵、加载阀、传感器、数据采集仪、工控机、开关电源等元件进行选型,从而构建试验台的液压控制系统和数据采集系统。最后采用图形化编程软件LabVIEW对测试系统进行软件设计。
[Abstract]:Hydraulic transmission is widely used in industrial production and daily life due to its advantages of high power mass ratio, stepless speed regulation and convenient operation and control. The working medium of hydraulic transmission is an important part of hydraulic system, which organically connects all kinds of components in the system to form a whole, realizes the transmission of signal and energy, and has the functions of rust prevention, cooling, lubrication and so on. Whether the hydraulic system can work effectively, reliably and economically depends to a great extent on the performance of the hydraulic transmission working medium. The working medium of hydraulic transmission should not only have proper viscosity, good anti-rust, anti-emulsification, oxidation stability and compatibility, but also have excellent anti-wear performance, so as to minimize the wear of friction pairs of components in hydraulic system. Prolong the service life of hydraulic components and systems and improve the energy efficiency of hydraulic systems. With the continuous improvement of the working pressure of hydraulic system and the continuous application of new hydraulic transmission working medium, the traditional hydraulic oil anti-wear test bench can not meet the rapid development of hydraulic transmission technology. On the basis of the traditional hydraulic oil antiwear test bench, the high pressure hydraulic pump is used to construct the high pressure antiwear test system, and the physical and chemical characteristics of the new hydraulic transmission working medium are fully considered, and the mechanism of its anti-wear property is analyzed. The interface of hydraulic control system, data acquisition system and test system is analyzed and designed. This paper first introduces the classification of working medium of hydraulic transmission, the commonly used anti-wear test equipment and its requirements, and points out the existing problems in view of the anti-wear test bench of traditional hydraulic oil. Secondly, the wear system of the test pump and the wear form of the friction pair are briefly introduced, and the anti-wear mechanism of different kinds of working media and additives of hydraulic transmission is analyzed. Then according to the latest development of hydraulic transmission technology, the hydraulic pump, loading valve, sensor, data acquisition instrument, industrial control computer, switching power supply and other components are selected to build the hydraulic control system and data acquisition system of the test bed. Finally, the software design of the test system is carried out by using the graphical programming software LabVIEW.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137

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