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毕业设计说明书

设计题目：基于Pro/E的液压挖掘机三维建模与运动仿真

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摘 要

工作装置是液压挖掘机的重要组成部分，为研究工作装置在挖掘机整个作业循环时间里的运动情况，运用Pro/E软件的运动仿真模块对挖掘机工作装置进行运动仿真。采用传统的运动分析方法存在工作量大、不精确和不直观等缺点。利用Pro/E对液压挖掘机反铲工作装置进行建模和装配,首先分析了挖掘机的运动过程和各工况位置,然后用Pro/ E中的Mechanism模块进行了机构运动学仿真,通过对挖掘机各连接轴的设置,找到挖掘机动臂、斗杆和铲斗的各极限位置，以及确定各部件的运动关系和时间安排。结果表明该方法简单、可靠、为挖掘机整机设计及性能评估提供一定的理论依据。

关键字：液压挖掘机；Pro/E；运动仿真

ABSTRACT

The work device is an important part of a hydraulic excavator.To start the motion process of hydraulic excavator work device in the whole operation cycle time, Pro/E sofortware is used to simulat. The traditional design methods to draw the envelope diagram have many shortcomings, such as the heavy workload,imprecision and less intuition. Pro/ E software was used to model and assemble for backhoe working equipment of the hydraulic excavator. Above all , the excavator movement process and work conditions were analyzed. Then mechanism kinematics simulation was carried on by Mechanism module in the Pro/ E software. The limit positionsof movable arm, bucket arm and bucket were found through setting joint shafts of the excavator.

Keywords：excavator；Pro/E；dynamic simulation