一机多控转向油泵试验台的研制与开发

发布时间：2019-02-15 08:11

【摘要】：近年来,液压传动技术及液压转向泵被广泛应用于汽车转向系统,通过液压助力大幅降低驾驶员在汽车转向过程中的体力消耗并降低疲劳驾驶风险。液压助力转向泵作为助力转向机构的核心部件,其性能的好坏将直接影响汽车转向操作时的安全性及轻便性,关乎人们的生命财产安全。因而,在液压助力转向泵投入实际应用前需对其进行严格的液压试验来判断其各项性能是否合格。如今借助高性能液压转向泵检测装置对转向泵进行各项性能检测试验已成为保障转向泵性能的重要手段。本文借鉴相关液压转向泵性能检测系统先进设计方案,开展新型转向泵综合性能检测试验台的研制工作。主要内容和成果如下:1)简述齿轮液压泵的工作原理及功能要求,介绍了转向泵性能检测的行业标准及企业标准;制订了试验台的整体结构方案,确定试验台三大系统—机械系统、液压系统及控制系统。2)根据被测泵的规格完成机械系统中电机功率的测算,并完成联轴器、轴承的计算选型及传动轴的设计工作,基于有限元分析软件对传动轴的应力、应变及变形进行分析以验证其性能是否满足工作需要,对传动轴上的A型平键计算分析判断其转矩传递能力是否达标,基于有限元分析对支撑平台的承载能力进行分析判断其十分满足使用要求;完成液压系统的工作原理分析及方案设计,完成液压系统中各液压元件的计算选型工作;此外,为实现液压系统压力的精确调节,设计了一款加载阀来满足试验台的需求。基于Solidworks三维软件绘制试验台机械与液压系统总成图。3)完成试验台控制系统的控制方案设计,完成试验台的功能设计,同时完成了主控制台、操作台硬件及软件方案设计。4)对某型号汽车转向泵进行跑合、安全阀调节、最大流量及半载容积效率检验,四项试验结果表明所研制的一机多控转向油泵性能检测试验台具有操作简单、高精度、高效率及高可靠性等优点,且市场推广前景广泛。
[Abstract]:In recent years, hydraulic transmission technology and hydraulic steering pump are widely used in automobile steering system, through hydraulic power to greatly reduce the driver in the steering process of physical exertion and reduce the risk of fatigue driving. Hydraulic power steering pump as the core component of power steering mechanism, its performance will directly affect the safety and portability of automobile steering operation, and related to the safety of people's lives and property. Therefore, the hydraulic steering pump should be tested strictly before it is put into practical application to judge whether its performance is up to standard. Nowadays, with the help of high performance hydraulic steering pump testing device, the performance test of steering pump has become an important means to ensure the performance of steering pump. Based on the advanced design scheme of hydraulic steering pump performance testing system, this paper develops a new comprehensive performance test rig for steering pump. The main contents and achievements are as follows: 1) the working principle and functional requirements of gear hydraulic pump are briefly described, and the industry standard and enterprise standard of steering pump performance testing are introduced. The whole structure scheme of the test bed is made, and the three systems of the test bed, mechanical system, hydraulic system and control system are determined. 2) according to the specifications of the pump under test, the calculation of the motor power in the mechanical system is completed, and the coupling is completed. Based on the finite element analysis software, the stress, strain and deformation of the drive shaft are analyzed to verify whether its performance meets the needs of the work. Based on finite element analysis, the load capacity of the supporting platform is analyzed and judged to meet the requirements of the use of the load capacity of the supporting platform by calculating and analyzing the A type flat key on the drive shaft to determine whether the torque transfer capacity is up to the standard or not. The working principle analysis and scheme design of the hydraulic system are completed, and the calculation and selection of the hydraulic components in the hydraulic system are completed. In addition, a loading valve is designed to meet the needs of the test bed in order to accurately regulate the pressure of the hydraulic system. Drawing the assembly diagram of mechanical and hydraulic system based on Solidworks software. 3) complete the control scheme design of the test bed control system, complete the function design of the test bed, and complete the main console at the same time, Hardware and software design of operating table. 4) running and closing of steering pump, adjustment of safety valve, maximum flow rate and half load volumetric efficiency inspection, The results of four tests show that the developed test rig has the advantages of simple operation, high precision, high efficiency and high reliability, and has a wide market prospect.
【学位授予单位】：安徽农业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.523

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