ZL50装载机总体及行星变速箱毕业设计（中间轴及齿轮）.doc

本科毕业设计（论文）ZL50装载机总体及行星变速箱设计（中间轴及齿轮）摘要ZL50装载机是我国轮式装载机系列中的中型产品，该机是一种较大型的以装卸散状物料为主的工程机械，广泛应用于矿山、基建、道路修筑、港口、货场、煤场等地进行装载、推土、铲挖、起重、牵引等作业。ZL50装载机属于ZL系列，采用轮式行走系，液力机械传动系，铰接式车架，工作装置采用液压操纵。所以该机具有机动性好、转向灵活、生产率高、操纵轻便等优点，另外，该机后桥布置为摆动桥，增加了整机的稳定性，所以该机的安全性好。ZL50装载机采用液力变矩器、动力换档变速箱、四轮驱动、液压转向、嵌盘式制动器、铰接式车架的先进结构，具有牵引力大、操作方便、转弯半径小、作业效率高等优点。本设计中采用行星式动力换档变速箱，它具有3个离合器和3根轴，且轴安装在壳体内，使变速箱结构简单、便于维修。变速箱具有两个前进档和一个后退档，可以产生3个速度。本设计中采用了有限元分析方法。在设计变速箱中间轴时，首先用传统方法进行计算并校核其强度、刚度等。然后用Pro/ENGINEER软件进行建模，并用Pro/MECHANICA分析方法对其进行有限元分析，分析其强度。关键词： 装载机 液力机械传动系统 行星式动力换档变速箱 有限元分析方法燕山大学本科生毕业设计（论文）PAGE IVAbstractThe loader ZL50 is wheel type and it is more bigger among the series made in our country .It is suitable for loading discharging materials and it applies for mine、capital construction 、road building、port、field、coal field and carries loading、pushing dust、 diging、rising weight、.The loader ZL50 is ZL series .It adopts whell type system、liquid engine driving system、ream meet vehicle type、,working set of hydraulic pressure controlling.So it has good flexibility、turning agility、high productivity、controlling handiness ets.Its back bridge is swing bridge ,so increases the stability of whole machine,and it has a good security.Being quipped with advanced devices such as hydraulic torque conventer、 power shift gearbox、four wheel driving 、hydraulic steeringgear、chuck disk break and artiallated frame.So the loader model ZL50 is featured with high pulling capacity、small turning radius.all of which make it possible for easy_operation.thus resulting in the high efficiency of our product.In my design,I adopt counter_shaft、power_shift transmission.It is equipped with one church and four axles.The axles is placed in room,so the transmission’s construction is simple and maincenance is easy.the transmission has two forward and one reverse gear,it can provide threeSpeeds. Finite element analysis method is adopted in this design.When designning the axis of the gear-box,first I carry through accounting using trad