矿用可移式救生舱舱体结构设计及强度分析研究

发布时间：2018-03-05 08:30

本文选题：可移式救生舱　切入点：结构设计　出处：《安徽理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：目前,我国煤炭行业矿难频发,死亡人员较多。为减少矿井下人员伤亡,采用救生舱作为井下避难设备十分必要和有效。由于国内外针对矿用可移式救生舱的研究很少,尤其在舱体结构强度分析及舱体热分析上缺乏研究和依据。而安监局及相关部门对救生舱的结构强度有严格的规定,要求必须进行结构强度有限元分析。因此对救生舱的研究、设计改进及结构强度分析是十分迫切和必要的。首先,对现有的可移式救生舱进行研究,对其外观、整体结构和强度进行理论分析,得出现有救生舱存在舱体外形不合理、舱体模块过大、加强筋的选用不合理等缺点和不足,针对这些问题进行结构设计改进。为得出最佳舱体外形,分别对圆形,矩形和拱形三种不同的断面形状的舱体进行详细的参数计算和结构设计,为结构强度分析提供基础和依据。其次,在救生舱强度分析方面,为探索更为方便、快捷、有效的有限元分析方法,节约救生舱的结构强度分析成本。本文试图探究救生舱瓦斯煤尘爆炸瞬态与静态分析之间关系,寻求二者在应力及位移上的比例关系,从而探索用静态分析代替瞬态分析的方法。再次,为了检验所设计的救生舱是否满足国家对救生舱的结构强度要求,并对三种截面进行静态结构强度分析得到应力云图、安全系数云图和位移云图。通过比较三者之间的差异,可以得出圆形,矩形和拱形三种不同的断面形状的救生舱舱体在结构强度上的差异,结合其它因素选出最佳舱体外形。此外,救生舱在爆炸环境下还受到热应力的影响,所以对其进行热分析是十分必要的。为了研究热应力对舱体结构的影响,针对选出的最佳舱体进行热应力分析。虽然最终结果热应力不大,但可以得出救生舱在热应力下的变形趋势和应力较大位置,从而在结构设计上对应力较大位置进行强化设计。综上所述,本文对可移式救生舱进行了结构设计、改进和强度分析。对可移式救生舱在外形,整体结构设计及结构强度分析和热分析等方面起到一定的指导意义,能为相关人员在煤矿可移式救生舱的研究工作上提供一定的借鉴。
[Abstract]:At present, there are frequent mine accidents and many deaths in the coal industry in China. In order to reduce the casualties under the mine, it is necessary and effective to use the lifebuoy as the underground refuge equipment. Especially in the analysis of the structural strength of the cabin and the thermal analysis of the cabin, there is a lack of research and basis. However, the safety supervision bureau and the relevant departments have strict regulations on the structural strength of the lifebuoy, which requires that the finite element analysis of the structural strength must be carried out. Design improvement and structural strength analysis are very urgent and necessary. First of all, the research on the existing movable lifebuoy, the appearance, the overall structure and the strength of the theoretical analysis, it is concluded that the existing lifebuoys exist in the shape of the cabin unreasonable, the module of the cabin is too large, The selection of reinforcement bars is unreasonable, and so on. To solve these problems, the structural design is improved. In order to obtain the best shape of the cabin, respectively, In order to provide the foundation and basis for the analysis of structural strength, the detailed parameter calculation and structural design are carried out for the cabin with three different cross-section shapes of rectangular and arch shapes. Secondly, in the aspect of strength analysis of lifeboat, in order to explore more convenient, fast and effective finite element analysis method, This paper attempts to explore the relationship between the transient and static analysis of gas dust explosion in lifebuoys, and to find out the proportional relationship between the stress and displacement. The method of replacing transient analysis with static analysis is explored. Thirdly, in order to verify whether the designed lifebuoy meets the national requirements for structural strength of the capsule, the stress cloud diagram is obtained by static structural strength analysis of the three sections. Safety factor cloud map and displacement cloud map. By comparing the differences among them, the differences of structural strength of lifebuoys with circular, rectangular and arched shapes can be obtained, and the optimum cabin shape can be selected by combining other factors. In addition, the cabin is also affected by thermal stress in the explosion environment, so it is necessary to conduct thermal analysis. The thermal stress analysis of the selected optimum cabin is carried out. Although the final result of the thermal stress is not large, the deformation trend and stress position of the lifeguard cabin under thermal stress can be obtained, thus strengthening the structural design of the larger stress position. To sum up, the structure design, improvement and strength analysis of movable lifebuoy are carried out in this paper. It plays a certain guiding role in shape, overall structural design, structural strength analysis and thermal analysis, etc. It can provide reference for relevant personnel in the research work of movable lifebuoy in coal mine.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD774

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