基于新国标的液压支架用立柱设计计算及有限元分析

发布时间：2018-05-26 11:50

本文选题：液压支架 + 立柱稳定性　；参考：《郑州大学》2015年硕士论文

【摘要】：立柱是液压支架最重要的支撑部件,其承载能力直接决定着支架的工作性能,大多数的液压支架损坏均和立柱失效有关。随着近几年液压支架工作阻力的大幅度提高,400mm、420mm、450mm、500mm大缸径规格立柱相继研发成功,更高的性能和可靠性成为设计人员设计研究的新目标。国家在2010年制订并发布了GB25974.2-2010煤矿用液压支架第2部分:立柱和千斤顶技术条件,用于替代MT313-1992液压支架立柱技术条件和MT97-1992液压支架千斤顶技术条件,本次新标准在老标准的基础上进行了修改和提高,研究新老标准的异同,使立柱设计能适应新的国家标准是摆在设计人员面前的问题。本文研究分为四个部分,一是新旧国标的对比研究,对比了新旧国标的异同,重点提炼出新国标下立柱设计计算的注意要点;二是新国标下的立柱设计计算研究,分别研究了立柱强度、稳定性、外伸限位和导向环的设计计算方法,并对ZY12000/25/50D型掩护式支架400mm缸径双伸缩立柱进行实例计算研究;三是基于有限元分析的的立柱强度、稳定性、外伸限位和导向环研究,通过对一般计算结果与有限元分析结果进行对比,提出科学合理的立柱设计计算方法;四是针对研究的实例根据计算结果,对其结构尺寸进行优化,比较优化后的立柱参数,并提出优化设计时需要注意的问题。
[Abstract]:Column is the most important supporting part of hydraulic support, its bearing capacity directly determines the working performance of support, most of the damage of hydraulic support is related to column failure. With the great increase of the working resistance of the hydraulic support in recent years, the design and development of 400mm / 420mm / 450mm / 500mm column with large cylinder diameter have been successfully developed, and higher performance and reliability have become a new goal for designers to design and study. In 2010, the country formulated and issued the GB25974.2-2010 coal mine hydraulic support part 2: column and Jack technical condition, used to replace MT313-1992 hydraulic support column technical condition and MT97-1992 hydraulic support Jack technical condition, The new standard has been modified and improved on the basis of the old standard. It is a problem for the designers to study the similarities and differences of the new and old standards so that the column design can adapt to the new national standards. This paper is divided into four parts: the first is the comparative study of the new and the old national standards, the similarities and differences between the new and the old national standards, and the key points for attention in the design and calculation of the columns under the new national standards; the second is the research on the design and calculation of the columns under the new national standards. The design and calculation methods of column strength, stability, extension limit and guide ring are studied respectively, and the examples of ZY12000/25/50D shelter-supported 400mm cylinder diameter double-telescopic column are studied. Third, the strength and stability of column based on finite element analysis. By comparing the general calculation results with the results of finite element analysis, a scientific and reasonable design and calculation method for columns is put forward. Fourth, according to the calculation results, the structural dimensions of the columns are optimized. The parameters of the column after optimization are compared, and the problems needing attention in the optimization design are put forward.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD355.41

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