本文選題：可移式救生艙　切入點：結(jié)構設計　出處：《安徽理工大學》2013年碩士論文　論文類型：學位論文

【摘要】：目前,我國煤炭行業(yè)礦難頻發(fā),死亡人員較多。為減少礦井下人員傷亡,采用救生艙作為井下避難設備十分必要和有效。由于國內(nèi)外針對礦用可移式救生艙的研究很少,尤其在艙體結(jié)構強度分析及艙體熱分析上缺乏研究和依據(jù)。而安監(jiān)局及相關部門對救生艙的結(jié)構強度有嚴格的規(guī)定,要求必須進行結(jié)構強度有限元分析。因此對救生艙的研究、設計改進及結(jié)構強度分析是十分迫切和必要的。 首先,對現(xiàn)有的可移式救生艙進行研究,對其外觀、整體結(jié)構和強度進行理論分析,得出現(xiàn)有救生艙存在艙體外形不合理、艙體模塊過大、加強筋的選用不合理等缺點和不足,針對這些問題進行結(jié)構設計改進。為得出最佳艙體外形,分別對圓形,矩形和拱形三種不同的斷面形狀的艙體進行詳細的參數(shù)計算和結(jié)構設計,為結(jié)構強度分析提供基礎和依據(jù)。 其次,在救生艙強度分析方面,為探索更為方便、快捷、有效的有限元分析方法,節(jié)約救生艙的結(jié)構強度分析成本。本文試圖探究救生艙瓦斯煤塵爆炸瞬態(tài)與靜態(tài)分析之間關系,尋求二者在應力及位移上的比例關系,從而探索用靜態(tài)分析代替瞬態(tài)分析的方法。 再次,為了檢驗所設計的救生艙是否滿足國家對救生艙的結(jié)構強度要求,并對三種截面進行靜態(tài)結(jié)構強度分析得到應力云圖、安全系數(shù)云圖和位移云圖。通過比較三者之間的差異,可以得出圓形,矩形和拱形三種不同的斷面形狀的救生艙艙體在結(jié)構強度上的差異,結(jié)合其它因素選出最佳艙體外形。 此外,救生艙在爆炸環(huán)境下還受到熱應力的影響,所以對其進行熱分析是十分必要的。為了研究熱應力對艙體結(jié)構的影響,針對選出的最佳艙體進行熱應力分析。雖然最終結(jié)果熱應力不大,但可以得出救生艙在熱應力下的變形趨勢和應力較大位置,從而在結(jié)構設計上對應力較大位置進行強化設計。 綜上所述,本文對可移式救生艙進行了結(jié)構設計、改進和強度分析。對可移式救生艙在外形,整體結(jié)構設計及結(jié)構強度分析和熱分析等方面起到一定的指導意義,能為相關人員在煤礦可移式救生艙的研究工作上提供一定的借鑒。
[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.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TD774

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