毕业设计论文重型自卸车货箱与举升装置设计含全套cad图纸管理资料Word文件下载.docx

1、绍了液压设计的前期准备工作：设计的依据、设计的一般原则和设计步骤。通过 对自卸汽车举升机 构几种方案的比较 ,确定 该车的举升机构的方 案,并对该方案进行了力学分析计算和液压系统设计。设计采用直推式举升机构,具有结构简单,行程长,兼具经济性的特 点。然后对液压缸的 刚度、强度、系统压力、升降时间进行了验算和校核，最终确定了该方案的合理性和安全性。另外，本说明书对取力器和货箱也进行了设计和计算。关键词：自卸汽车，液压系统，举升机构，取力器iHEAVYDUMP TRUCK PACKINGCASEANDTHEDE SIGNOFLIFT INGDEVICEABSTRACTThe dump truck

2、uses the engine power actuation hydr aulic pr ess ure lif tingorganization, packing container incline certain angle, thus serves the pur pos ewhich unloads cargo automatically, and depends upon the packing container deadweight to cause its replacement. The auto- dumping mechanism is mainlyresponsibl

3、e for the lif ting and dumping of the the goods ar e neededto be unloaded, the oper ator will control the handle of the hydraulic valve,andthen the goods are dumped by the series of engines fr om the engine to thegear box,and then to the power-out device driving the liquid pump to give thepower to l

4、iquid tank ,which pushes the compartment to tilt the goods. Thehydraulic pressure lifting or ganization is one of dump trucks impor tant wor ksystems , its str uctur al style, perf or mance quality immediate influence dumptr ucks oper ational perf or mance and safety perf or mance.The content of thi

5、s graduation design has focused on the design of the dumptr uck hydr aulic cylinder and hydr aulic systems,intr oducing the design ofhydraulic des ign pr eparation wor k,and the design basis ,general principles andsteps. Compar ed with the several plans of lifting mechanis m ,we have chosen oneplan

6、finally,f or we have designed the calculation of the mechanical analysis andthe hydr aulic design put to use to keep the push type liftingmechanism,which has simple str uctur e ,long route of tr avel,and economic.Whats more,we alse have checked its stiff ness,strength,systematicpressure,lif ting up

7、and down time,f inally we decided the reasonableness and addition, we alse made the design and calculation of thePower- Take-Off and the goods compartment.Keyword s: dump truck,hydraulic pr ess ure urn design,hydraulic pr essureivsystem,Lif ting mechanis m,Pow er- Take-Of fv第一章前言.1第二章总体方案分析及确定3 自卸汽车

8、的分类.3.总设计内容分析车厢设计.45车厢结构设计车厢选择材料6举升机构分析.液压系统的组成部分及作用自卸汽车举升机构现存方案及其优缺点.7第三章液压举升系统的设计.10举升机构设计中应考虑的问题.爬行现象车厢在最大举升位置时，车厢后地板离地面的高度。.11 液压缸设计时应注意如下问题。 举升参数的确定. 液压缸举升参数的计算. 基本参数和计算方法的选择. 举升油缸直径的计算. 液压性能参数计算. 货箱举升时间的校核. 液压缸基本参数的校核.第四章 液压系统主要元件的设计计算和选择. 系统工作压力. 液压油缸 . 举升油缸的技术参数. 满行程油缸充油量 V.vi121318192223 举升时间.23 动力元件-液压泵的选型与计算.23 阀类元件的确定. 24 选择范类元件应注意的问题. 24 阀类元件的选择.24 管路的选择. 26第五章 取力器的设计计算. 27 取力装置概述.