本文選題：箕斗 + 結(jié)構(gòu)設(shè)計(jì)　； 參考：《安徽理工大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)煤炭行業(yè)的飛速發(fā)展,礦井年產(chǎn)量不斷增加,對(duì)提升箕斗容量的要求也在不斷提高。然而,國(guó)內(nèi)常用的箕斗額定裝載量偏小,單次運(yùn)輸量少、開(kāi)采效率低,滿足不了現(xiàn)在礦井大型化要求。通過(guò)實(shí)地考察與研究,確定50t箕斗結(jié)構(gòu),運(yùn)用三維軟件完成模型建立,并用有限元分析軟件對(duì)箕斗斗箱進(jìn)行靜力學(xué)和動(dòng)力學(xué)分析。改進(jìn)箕斗易損部件的結(jié)構(gòu),解決了箕斗滯煤、磨損嚴(yán)重的問(wèn)題；研究設(shè)計(jì)了大容量箕斗卸載系統(tǒng),得到曲軌卸載曲線,并對(duì)結(jié)果進(jìn)行驗(yàn)證。 首先,介紹了國(guó)內(nèi)常用的兩類箕斗,通過(guò)比較選取上開(kāi)式曲軌自動(dòng)卸載扇形閘門(mén)箕斗作為研究對(duì)象。以某礦井使用的40t特窄型箕斗為基礎(chǔ),研究設(shè)計(jì)了50t箕斗的結(jié)構(gòu),并用Solidworks軟件進(jìn)行模型的建立。在箕斗力學(xué)理論的基礎(chǔ)上,得到箕斗斗箱壁的受力特性曲線,通過(guò)Ansys Workbench軟件對(duì)箕斗斗箱壁進(jìn)行靜力、模態(tài)和諧響應(yīng)分析,并通過(guò)改變斗箱壁的厚度和加強(qiáng)筋的間距分析比對(duì)確定斗箱設(shè)計(jì)的合理性。 其次,為了防止發(fā)生滯煤現(xiàn)象,提高箕斗的抗砸耐磨能力,對(duì)箕斗底板、抗砸機(jī)構(gòu)和定量斗拆解結(jié)構(gòu)進(jìn)行設(shè)計(jì),使其更符合實(shí)際生產(chǎn)要求。同時(shí)對(duì)箕斗下滾輪罐耳安裝位置進(jìn)行了改進(jìn),通過(guò)了解設(shè)備的腐蝕特點(diǎn),采用了防腐措施,增加了箕斗的使用壽命,降低了成本。 現(xiàn)在使用的大容量箕斗多采用外動(dòng)力卸載,而上開(kāi)式曲軌自動(dòng)卸載卸載速度快且平穩(wěn),整體結(jié)構(gòu)簡(jiǎn)單。因此,本文對(duì)大容量箕斗自動(dòng)卸載技術(shù)進(jìn)行研究,在曲軌卸載理論的基礎(chǔ)上預(yù)測(cè)了卸載時(shí)間,通過(guò)理論計(jì)算得到了50t箕斗曲軌曲線方程,通過(guò)分析計(jì)算確定了設(shè)計(jì)的合理性。
[Abstract]:With the rapid development of coal industry in China, the annual output of coal mine is increasing, and the requirement of raising skip capacity is also increasing. However, the rated load of skip is small, the quantity of single transport is small, and the mining efficiency is low, which can not meet the requirements of large-scale mine. Through field investigation and research, the structure of 50 t skip is determined, and the model is built by using 3D software. The statics and dynamics of skip box are analyzed by finite element analysis software. By improving the structure of the vulnerable parts of the skip, the problem of coal lag and serious wear of the skip is solved, and the unloading system of the large-capacity skip is designed, and the curve of the unloading of the curved rail is obtained, and the results are verified. Firstly, two kinds of skip are introduced, and the fan gate skip is chosen as the research object by comparison. Based on 40t special narrow skip used in a mine, the structure of 50t skip is studied and designed, and the model is built with Solidworks software. Based on the theory of skip mechanics, the stress characteristic curve of skip box wall is obtained. The static force and modal harmonious response of skip box wall are analyzed by Ansys Workbench software. The rationality of bucket box design is determined by changing the thickness of bucket wall and analyzing the distance between reinforcement bars. Secondly, in order to prevent the phenomenon of coal stagnation and improve the anti-abrasion ability of skip, the bottom plate of skip, anti-smashing mechanism and the disassembly structure of quantitative bucket are designed to meet the actual production requirements. At the same time, the installation position of the can ear of the skip lower roller is improved. Through understanding the corrosion characteristics of the equipment, the anticorrosive measures are adopted, which increase the service life of the skip and reduce the cost. Most of the large capacity skips used now use external dynamic unloading, while the automatic unloading speed of the upper open curved rail is fast and stable, and the whole structure is simple. Therefore, in this paper, the automatic unloading technology of large capacity skip is studied, the unloading time is predicted on the basis of the unloading theory of curved rail, the curve equation of 50 t skip curve is obtained by theoretical calculation, and the rationality of design is determined by analysis and calculation.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD531.1

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本文編號(hào)：1957395