采用调速阀的速度换接回路实验装置设计论文[带图纸].doc

本科毕业设计(论文)题目：采用调速阀的速度换接回路实验装置设计系别：机电信息系专业：机械设计制造及其自动化班级：学生：学号：指导教师：2013年5月I用调速阀的速度换接回路实验装置设计摘要速度换接回路的功用是使液压执行机构在一个工作循环中从一种运动速度换到另一种运行速度，因而这个转换不仅包括快速转慢速的换接，而且还包括两个慢速之间的换接。实现这些功能的回路应该具有较高的速度换接平稳性。本文阐述了采用调速阀的速度换接回路实验台的设计，主要对工作原理、结构组成、参数计算等发面做了详细的分析与研究，得出一套较为合适的方法来设计实验台。主要通过查阅相关资料，应用相关公式，从而对油箱进行设计，然后来选择液压站的动力装置，确定电机与泵的安装方式，最后再根据原理图以及各项参数来进行管路与管接头的选择，从而完成整个设计。论文首先综述了国内外液压技术的研究进展及研究现状、分析课题的研究背景、阐述课题研究的意义和内容。然后重点从原理设计、各回路的功能分析与选择入手，从而选择液压元件，计算其性能是否符合指标，最后校核温升。关键词：液压基本回路；速度换接回路；实验装置IITheDesignofSwitchingCircuitExperimentDeviceAdoptingtheSpeedRegulatorValveAbstractSpeedexchangecircuitsareusedtomakethehydraulicactuatortochangefromonemotiontoanotherrunningspeedinaworkcycle,sotheconversionincludesnotonlythefastswitchingforslow,butalsoincludestheexchangebetweenthetwoslow.LoopshouldachievethesefunctionswithhighspeedandstabilityThispaperdescribesthedesignofcircuitexperimentplatformforthespeedregulatorvalve,mainlyontheworkingprinciple,structure,parametercalculationetctodoadetailedanalysisandresearch,todesigntheexperimentwhichobtainsasetofsuitablemethod.Throughaccesstorelevantinformation,relatedformulasareused,thusthechoiceoftank,powerplantandthentoselectthehydraulicstation,theinstallationmodeofmotorandpump,finallytopipelineaccordingtotheschematicandthevariousparametersandselectionofpipejoints,soastocompletethewholedesign.Thepaperfirstsummarizestheanalysisofthestatusquo,andresearchprogressofstudyonthehydraulictechnologyathomeandabroadandthesignificanceofresearchbackground,describestheresearchtopics.Thenfocusfromtheprincipleofdesign,functionanalysisandselectionofcircuits,andchoosinghydrauliccomponents,itsperformanceisinlinewiththeindexcalculation,finallythechecktemperaturerise.KeyWords:Hydraulicbasiccircuit；Speedchangeovercircuit；ExperimentalinstallationIII主要符号表qp液压泵得最大流量pp液压泵最大工作压力p1执行元件最大工作压力Δpλ沿程压力损失KL系统的泄漏系数ʋ运动粘度CT油箱散热系数Re管道流动雷诺数IV目录1绪论....................................................................................................................11.1前言.................................................................................................................11.2题目背景及研究意义.....................................................................................21.3课题主要内容.................................................................................................32液压传动综述.................................................................................................42.1液压传动系统的组成.....................................................................................32.2液压传动的优缺点.........................................................................................42.3液压技术的应用和发展状况.........................................................................52.4液压系统设计要求及流程.............................................................................63速度换接回路液压系统的设计................................................................73.1液压系统的工况分析.....................................................................................73.2原理图的拟定.................................................................................................73.2.1确定液压泵类型........................................................................................73.2.2原理图设计................................................................................................73.3液压系统参数的计算及液压元件的选择....................................................113.3.1液压缸主要尺寸的确定...........................................................................113.3.2选择液压泵规格......................................................................................133.3.3液压元件的选择......................................................................................143.3.4确定管路尺寸..........................................................................................154液压油路板的结构与设计.......................................................................164.1液压油路板的结构.......................................................................................164.2液压油路板的设计.......................................................................................164.2.1分析液压系统，确定液压油路板结构..................................................164.2.2液压元件的布局及油孔的位置..............................................................164.2.3绘制液压油路板零件图..........................................................................175液压站的设计..................................................................................185.1液压油箱的设计...........................................................................................185.1.1液压油箱有效容积的确定......................................................................185.1.2液压油箱的外形尺寸..............................................................................195.1.3液压油箱的结构设计..............................................................................195.2液压站的结构设计.......................................................................................225.2.1液压泵的安装方式..................................................................................22