毕业设计---伺服阀试验台设计

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1、 I 摘要 随着液压工业的发展，液压技术在各种机械中发挥着越来越重要的作用。由 于液压系统的组成、功能日益复杂，因而发生故障的机率也随之增多。液压缸的 研究、设计、生产、使用与维修都离不开对其进行试验；设计一种能满足各种类 型液压缸试验要求， 并能以最少的资金和占用最小的场地解决实际问题的通用液 压缸试验台已势在必行。 本课题在设计出的试验台液压原理图的基础上， 借助先进的测量系统和经典 的电气控制系统来实现液压缸的动静态特性测试。 其主要的测试项目的为液压缸 的气密性、排量、容积效率、总效率等特性测试。本课题所设计的液压缸动静态 特性试验台最大压力达到 31.5MPa，最大流量达到 250L

2、/min；能够满足缸径在 200mm、行程在 1500mm 以下的液压缸的试验要求。本系统的特点是：效率高、精 度高、噪声小、泄露小、操作人性化等特点。本系统还选用了一些先进的电子元 件，系统稳定可靠、使用寿命长。 关键词 液压技术，液压系统，液压缸试验台 ABSTRACT With the development of industrial hydraulic, hydraulic technology in the machinery to play an increasingly important role. As the hydraulic system of the composi

3、tion, function increasingly complex and thus the failure rate also will increase. Cylinder research, design, production, use and maintenance can not be separated from its test; design a hydraulic cylinder to meet the test requirements of various types, and are able to at least the capital and occupi

4、ed the smallest venue to solve practical problems Universal hydraulic cylinder test bed it is imperative. This topic in designs in the test platform hydraulic pressure schematic diagrams foundation, realizes the hydraulic cylinder with the aid of the advanced measurement system and the classics electric control system to move the static characteristic test. What its main test item is characteristic tests and so on hydraulic cylinders gas tightness, displacement, volumetric efficiency, ove