毕业论文__反铲液压挖掘机工作机构设计.docVIP

本科毕业设计(论文) 题目：反铲液压挖掘机工作机构设计 教学单位： 机电工程系 专 业： 机械设计制造及其自动化 学 号： 0912010339 姓 名： 刘寄吧 指导教师： 2012年 6月 摘 要 液压挖掘机是一种重要的工程机械，它的广泛应用对于减轻劳动量，保证工程质量，加快工程进度，提高劳动生产率起了巨大的作用。反铲工作装置由动臂，斗杆，动臂液压缸，斗杆液压缸和铲斗液压缸组成。 本文根据液压挖掘机反铲装置的结构特点和工作原理，对其各主要机构进行了运动学分析。并在此基础上，根据任务书的设计要求，结合各机构的工作特点和设计要求，在对各机构分析计算的同时，结合构件已知尺寸参数，算出各机构中构件的其它参数，为各构件的结构设计提供数据支撑。 挖掘力是衡量挖掘机挖掘能力的重要参数，挖掘力是由各液压缸中的油液压力提供的，是主动力。最大挖掘力的实现受诸多因素的制约，它是工作装置各铰点受力分析的基础。挖掘阻力不仅与铲斗的尺寸形状有关，还与挖掘对象有关，是两者的综合反映。 关键字： 液压挖掘机 反铲装置 运动分析 参数设计 力学分析Abstract Hydraulic excavator is an important engineering machinery.Its wide application played a tremendous role to reducing the volume of labor and to ensuring project quality and to accelerating progress and to increasing productivity.Backhoe working devices is made up of a moving arm and a fighting pole and shovel and a hydraulic tank of moving arm and a hydraulic tank of fighting pole and a hydraulic tank of shovel. Based on the hydraulic excavator backhoe device characteristics and the structure of principle,to all the major institutions of the kinematic analysis.On this basis,in accordance with the design specification design requirements,with the bodies of the characteristics and design requirements,in terms of the various agencies at the same time,combining elements of known size parameters,calculated in the component agencies of other parameters,for various components,The shape of design data support. Mining is a measure of the ability of excavators digging the important parameters.Mining is done by the hydraulic cylinder of the pressure on the oil,is initiative, the largest excavation of the realization by many factors, it is also working device to hinge point Analysis of the foundation.Mining resistance not only reflect the size of bucket shape,but also with the excavation of the object,is a comprehensive reflection of the two. Keywords： hydraulic excavatorbackhoe device;motion anal