混凝土泵车支腿部分的设计毕业论文.doc -- 8 元

毕业设计论文混凝土泵车支腿部分的设计DESIGNOFTHECONTRETEPUMPTRUCKSTABILIZER学生姓名学院名称机电工程学院专业名称机械设计制造及其自动化指导教师徐州工程学院毕业设计论文I随着现代科学技术的迅速发展，混凝土泵车在现代化生产过程中应用越来越广。本文首先介绍了混凝土泵车的结构和特点，重点对混凝土泵车支腿各部分进行了设计支腿机构通过水平液压缸和垂直液压缸实现各支腿的收缩动作，采用并联控制系统实现各支腿的同时动作，本文对支腿的液压原理进行了相关设计，并根据需要对一些液压元件进行了选择。具体内容主要包括支腿的选型与跨距的确定,支腿危险截面强度的校核。整车稳定性的计算。支腿液压部分的设计，液压元件的选用。本设计的主要特点是机构简单,节省投资，控制方便。关键词混凝土泵车支腿稳定性徐州工程学院毕业设计论文IIAbstractWiththerapiddevelopmentofthemodernscienceandtechnology.Concretepumpiswidelyusedinthemodernizationproductionprocess.Firstthispaperintroducedconcretepumponthestructureandfeatures,focusingondesigningofthepartsofaconcretepumpstabilizer.Stabilizerbodiesmovethroughthelevelhydrauliccylindersandverticalhydrauliccylindertoachievethecontractionaction,aparallelcontrolsystemisusedtocontrolthemovementofstabilizer.Thehydraulicprincipleofthestabilizerwasdesignedinthispaper.Somehydrauliccomponentswerechosenaccordingtotheneed.ThespecificcontentsincludeSelectionandidentificationthestabilizerspancheckingofthestrengthofthedangeroussectionofstabilizercalculationofthevehiclestabilitydesignofthepartofstabilizerhydraulicselectionofhydrauliccomponents.Themainfeaturesofthedesignaresimpleinstitutionssavingsinvestmenteasytocontrol.Keywordsconcretepumpstabilizerstability徐州工程学院毕业设计论文I目录1绪论......................................................................11.1混凝土泵车的概述......................................................11.2国内外混凝土泵车的发展概况............................................11.3混凝土泵车现代设计方法概述............................................22技术参数确定..............................................................42.1主要性能参数..........................................................42.2混凝土泵车参数的确定..................................................43支腿形式及相关尺寸确定....................................................53.1常见支腿结构形式......................................................53.2回转支承的相关参数....................................................54最小安全跨距的确定........................................................64.1混凝土泵车的最不利工作状况............................................64.2最不利工况时整车合重心范围............................................64.2.1最不利工况时臂架合重心.............................................64.2.2臂架折叠时臂架合重心距离回转中心的距离.............................74.2.3臂架折叠状态下整车的重心...........................................84.2.4最危险工况时重心的范围.............................................94.3泵车支腿长度的确定...................................................105展开角度的优化...........................................................115.1整机重心轨迹方程的确定...............................................115.2泵车整机稳定性的衡量指标.............................................125.3最佳展开角度所在值域区间的判断.......................................135.4求解整机稳定性的最佳支腿展开角度.....................................135.4.1求解过程的注意点..................................................135.4.2稳定性指标的数学表达式............................................135.5确定支腿跨距.........................................................146支腿反力的计算...........................................................166.1数学模型及受力分析...................................................166.2四点支承支腿竖直方向反力计算方法.....................................176.2.1载荷P和G引起的支腿反力..........................................176.2.2力矩M引起的支腿反力..............................................176.3三点支承支腿竖直反力的计算方法.......................................196.4最大竖直反力的求解...................................................206.4.1前支腿最大竖直反力................................................20