摘要丧动是指液压缸在安装长度的基础上随着驾驶室悬置上下浮动而自由浮动的一种现象，是影响液压快插产品使用寿命的重要因素之一。本次毕业设计课题是设计一个快插产品丧动寿命试验机。本课题涉及到的快插产品是指用于驾驶室液压翻转系统的液压快速接头。液压快速接头是容易损坏的部件，从可靠性和经济性方面来讲，通常成为限制性部件，会影响到液压设备的整体性能和使用成本。进行液压快速接头寿命测试可以对其使用性能进行鉴定，了解液压快速接头的设计缺陷，为产品的使用以及改进提供重要依据。因此，根据液压设备使用的实际需求，进行快插产品寿命试验机的机械设计，可以为液压设备性能测试提供可靠的试验工具，具有较高的理论和实际的应用价值。丧动寿命试验机可以设定设定四项参数，分别为测试压力、测试角度、测试频率、循环次数。试验过程中通过改变不同的参数，来研究各因素对快插产品寿命的影响。82700

毕业论文关键词：丧动；试验机；装置设计

Abstract The lost motion is a phenomenon that the hydraulic cylinder is floating on the basis of the installation length of the hydraulic cylinder with the floating of the cab。It is one of the important factors that affect the service life of hydraulic quick insert product。 The topic of graduation design is the design of quick insert product lost motion testing machine。The quick insert products this topic referring to is the hydraulic quick joint used in cab hydraulic turning system。 Hydraulic quick joint is a vulnerable part, from the reliability and economic terms,it often becomes a restricted component and will affect the overall performance and cost of the hydraulic equipment。 The life testing of the hydraulic quick joint can be used to identify the performance of the hydraulic quick joint, and to understand the design defects of the hydraulic quick joint, which provides an important basis for the use and improvement of the product。 Therefore, according to actual needs of the use of hydraulic equipment,it is necessary to design a quick insert product testing machine which provides a reliable test tool for the performance test of hydraulic equipment and has high theoretical and practical application value。This testing machine can set four parameters which are test pressure, test angle, test frequency and number of cycles respectively。 During the experiment,we can study the influence of various factors on the service life of quick insert product by changing the parameters。

Keywords: lost motion; testing machine; mechanical design

目 录

第一章  绪论 1

1。1 课题研究背景 1

1。2 选题的目的和意义 1

1。3 国内外研究现状及存在问题 1

第二章  总体方案设计 3

2。1 设计要求 3

2。2 方案拟定 4

第三章  试验机装置设计 5

3。1 电机 6

3。1。1电机的选型 6

3。1。2 电机的安装 7

3。2 齿轮齿条 8

3。2。1 齿轮齿条的选型 8

3。2。2 齿轮齿条的安装 9

3。3 曲柄滑块机构 9

3。3。1 可调偏心装置设计