履带吊管机总体结构优化方案的研究

发布时间：2018-01-02 07:25

本文关键词：履带吊管机总体结构优化方案的研究　出处：《河南科技大学》2011年硕士论文　论文类型：学位论文

【摘要】：履带吊管机属于大中型管线施工专用起重机械设备,它主要具有起重量较大、工作范围广、接地比压小并且可添加其它附加设备实现多用途等特点。随着我国大中型石油和天然气管线的新建,对吊管机的需求量逐年增加,对其性能的要求也越来越高。吊臂是吊管机上的重要结构件,主要起着支撑和变幅作用。在吊管机的整机重量当中,吊臂的重量占据了较大比重,且其重量还是影响起重能力的主要因素之一。因此,合理设计吊臂的结构,提高吊臂单位重量的起重量也就成为总体结构优化设计的重要环节,这就对吊臂的设计提出了更为严格的要求,即在保证吊臂有足够的强度和刚度的同时又要有较轻的质量。本论文针对某公司生产的DG45型履带吊管机作为研究对象,利用ANSYS workbench软件建立吊管机吊臂的三维数字模型和有限元参数化模型。运用有限元软件,对三种基本工况下的吊臂进行静强度和静刚度分析,得到应力和应变分布等数据。然后,在优化分析模块中对吊管机吊臂进行优化设计,通过优化设计得到吊臂较为合理的主弦杆几何尺寸,并对优化后的吊臂进行验算,由验算的结果可知,优化后的吊臂满足使用性能要求,从而验证了优化结果的可行性。在优化吊臂的基础上提出吊管机总体结构优化方案,优化方案主要通过优化吊臂重量和改变吊管机液压绞车的安装位置来实现,改变液压绞车安装位置时又对配重装置进行了简单的结构优化。吊管机总体结构优化方案在不改变吊管机机体的情况下,根据力矩法校核起重机抗倾覆稳定性,对吊管机总体结构优化后的稳定性进行分析和对比。本论文履带吊管机吊臂有限元分析结果表明:用ANSYS workbench进行有限元分析既可以节省设计开发时间,又可以有比较高的模拟精度,对于工程实际具有重要指导意义。同时还可以提高相似机械结构的设计水平,使其结构更加合理,以满足当今社会不断发展的需要。对吊管机总体结构稳定性分析结果表明:对吊管机总体结构优化后,在吊管机起吊性能不变的情况下,其稳定性得到了提高。在吊管机起吊性能和稳定性都不变的情况下,吊管机的整机重量得到了减轻。该吊管机总体结构优化方案的研究可为类似产品的设计提供具有参考价值的理论依据。
[Abstract]:Crawler pipe crane belongs to large and medium-sized pipeline construction of special lifting equipment, it mainly has the weight of large, wide working range, the characteristics of ground pressure and small can add other additional equipment to achieve multi-purpose. With China's large and medium-sized oil and gas pipeline construction, demand for sideboom year by year increase on the performance requirements are increasingly high.
The boom is an important structure of pipe crane machine, mainly plays a supporting role in weight. And the amplitude of pipe crane, the crane's weight occupies a large proportion, and the weight or influence is one of the main factors of heavy capacity. Therefore, reasonable structure design of the jib crane, improve unit the weight of the weight has become an important part of the design optimization of the overall structure, the design of the jib puts forward more strict requirements, that is to ensure that the crane has enough strength and rigidity and lightweight. The DG45 track for a company's production of pipe crane as the research object, the establishment of a three-dimensional digital model of the pipe crane arm and parametric finite element model using ANSYS workbench software. By using the finite element software analysis and static stiffness on static strength of the crane three basic conditions, get the stress and strain distribution The data. Then, the optimization analysis module of the pipe crane arm is optimized, by optimizing the design of main chord geometry of the boom is more reasonable, and the checking of the optimized boom, by checking the results, the optimized boom to meet the performance requirements, in order to verify the feasibility the optimization results.
Based on the optimization of the boom on the pipe crane scheme optimization of overall structure, the optimization scheme mainly through the optimization of the boom weight and change the pipe crane installation position of hydraulic winch to realize changing the installation position of the hydraulic winch and counterweight device structure optimization is simple. The pipe crane does not change in the overall structure optimization scheme pipe crane body, torque according to the method of checking the crane anti overturning stability, analysis and comparison on the stability of the pipe crane structure after optimization.
The crawler pipe crane arm finite element analysis results show that the finite element analysis using ANSYS and workbench can not only save the design time, but also has higher simulation precision, has the important guiding significance for engineering practice. At the same time also can improve the design level of similar mechanical structure, the structure is more reasonable, to to meet the needs of the development of the society. The stability of the pipe crane machine overall structure analysis shows that the pipe crane structure after optimization in pipe crane hoist constant performance, its stability is improved. The pipe crane lifting performance and stability are unchanged, the weight lifting machine has been reduced. The pipe crane overall structure optimization research can provide a theoretical basis with reference value for the similar product design.

【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH21

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