3000吨级履带起重机下车结构设计研究

发布时间：2018-02-09 16:51

本文关键词： 履带起重机下车结构有限元法接触计算　出处：《大连理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：履带起重机是当今石化建设、风电安装以及基础设施建设的重要起重设备,而下车结构是其主要组成部分,下车结构设计的优劣直接关系到整机的安全及性能。本文以本课题组与徐工集团建设机械分公司合作设计研发的3000吨级履带起重机项目为背景,对此吨位级别的履带起重机下车结构进行设计研究,并对其中的铰耳销轴连接结构进行基于ANSYS的接触分析,后处理中观察冯氏应力的方法,找出各尺寸参数对应力的影响,以指导工程实际。目前国内对于如此超大吨位级别的履带起重机的设计研究尚属刚刚起步,产品皆处于试制阶段,还没有投入使用,对于下车结构的设计基本采用类比、仿制等手段,理论依据不足。因此对3000吨级履带起重机的下车结构设计研究是非常必要且有实际意义的。 (1)通过归纳、对比分析各吨位级别履带起重机的下车结构形式和优缺点,初步确定本机下车的结构形式,应用有限元软件ANSYS对下车结构进行计算,依据计算结果对下车结构进行改进,并最终确定下车结构设计方案。 (2)对于下车中应力较大并且十分重要的铰耳销轴连接结构,在ANSYS中单独建立实体模型,采用接触对儿连接,进行接触计算,然后在后处理中观察冯氏应力的方法分析,并与理论计算结果进行对比,同时改变各尺寸参数观察其对应力的影响,从而为实际设计提供理论依据和数据支持。 (3)基于C++语言,在Microsoft Visual Studio2005平台上,编写出对话框应用程序。可实现输入一定的参数后,自动调用ANSYS软件,进行铰耳销轴连接结构的建模、接触计算以及保存结果的功能。总之,本文提出的下车设计方法已应用于实际的3000吨级履带起重机项目中,现该产品已进入生产制造阶段。本文为3000吨级履带起重机下车结构及铰耳销轴连接结构的设计奠定了良好的应用基础,并提供了有力的数据支持,具有很好的实际应用价值。
[Abstract]:The crawler crane is an important lifting equipment for petrochemical construction , wind power installation and infrastructure construction , and the off - off structure is its main component , and the excellent and inferior structure design is directly related to the safety and performance of the whole machine . Based on the design and research of the 3000 - tonnage crawler crane project , which is designed and developed in cooperation with Xugong Group Construction Machinery Co . , Ltd . , this paper designs and studies the train - off structure of the crawler crane with the tonnage level , and finds out the influence of the parameters on the stress in the post - treatment to guide the engineering practice . At present , the design of the crawler crane with the super - large - tonnage level has not been put into use , and the theoretical basis is insufficient for the design of the off - off structure . Therefore , it is necessary and practical to study the design of the off - off structure of the 3000 - ton crawler crane . ( 1 ) By summing up , comparing and analyzing the structure form and advantages and disadvantages of each tonnage crawler crane , preliminarily determining the structure form of the off - off structure of the crane , applying the finite element software ANSYS to calculate the vehicle - off structure , improving the vehicle - off structure according to the calculation result , and finally determining the design scheme of the vehicle - off structure . ( 2 ) For the connection structure of hinge lug pin with large stress and very important in getting off , a solid model is established in ANSYS . The contact calculation is used to calculate the contact , then the method of the stress in the post - treatment is compared , and the influence of each dimension parameter on the stress is observed , so as to provide theoretical basis and data support for the actual design . ( 3 ) Based on C ++ language , on the platform of Microsoft Visual Studio 2005 , a dialog box application is written . After inputting certain parameters , ANSYS software is automatically invoked to model , contact calculation and save the result . In conclusion , the design method proposed in this paper has been applied to the actual 3000 - ton crawler crane project , and the product has entered the production and manufacturing stage . This paper lays a good application foundation for the design of the off - off structure of the 3000 - tonnage crawler crane and the joint structure of the hinge lug pin shaft , and provides strong data support , and has good practical application value .

【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH213.7

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