摩擦试验机样机设计说明书.doc

摘要
本论文分析了摩擦试验机的现状和发展方向,详细介绍了摩擦实验机的工作原理以及在我国材料工程发展中的重要意义。
本次设计的摩擦试验机是模拟高速铁路运行时轮轨摩擦磨损的试验机。它是对环块式摩擦试验机的改进,主要有正压力加载系统、传动系统、控制系统三部分组成。本文将着重介绍其中的传动系统和压力加载系统。主机除了保留环块摩擦试验机的优点外,采用了更为稳定可靠的液压系统来进行正压力的加载,通过电动机带动主轴上的车轮旋转。压力是由液压系统通过液体工作介质驱动液压缸对试样加载压力。
该试验机能够在不同压力,不同速度情况下对摩擦材料的摩擦磨损性能进行试验。因此它将会是一些企业和科研机构对材料性能进行测试、产品性能检验的重要实验工具。
关键词:摩擦试验机;液压加载;加载系统;传动系统
ABSTRACT
This paper analyzes the present situation and the developing direction of friction testing machine, friction testing machine was introduced in detail the working principle and important significance in the development of materials engineering in our country.
The friction tester of this design is a test machine that simulates the friction wear of high-speed railway. It is an improvement of the ring friction test machine, which mainly consists of three parts of the positive pressure loading system, transmission system and control system. This article focuses on the transmission system and the pressure loading system. Host in addition to the advantages of retaining ring piece of friction testing machine, have adopted a more stable and reliable hydraulic system for positive pressure load, through the motor drives the wheels on the spindle rotation. The pressure is driven by the hydraulic system through the liquid working medium and the hydraulic cylinder is applied to the sample loading pressure.
The test machine can test the friction wear properties of the friction material under different pressure and speed. Therefore, it will be an important laboratory tool for the testing and testing of material performance by some enterprises and scientific institutions.
keywords:Friction tester; Hydraulic loading; loading system; transmission system
目录
1 绪论 1
选题背景及意义 1
摩擦试验机及其分类 1
摩擦试验机发展现状 2
本论文主要研究内容 3
2 总体方案的设计 4
设计要求 4
主要设计参数 4
摩擦试验机的总体方案的设计 5
3 试验机主要系统的设计 5
传动系统的设计 5
传动系统的确定 6
加载系统的设计 6
加载系统的确定 7
4 摩擦试验机的设计计算 7
传动系统 7
工作压力的计算 7
试验机电机选择 9