【摘要】：斗輪堆取料機是目前世界通用的大型連續(xù)式散料處理成套設備,由于它屬于連續(xù)生產(chǎn)機械,生產(chǎn)率高,越來越受到世界各國的重視,目前,已廣泛應用于礦山、冶金、電力、交通、建材和化工等領域的大型露天礦儲料場、倉庫、發(fā)電廠、煤氣廠和大型港口碼頭等場所。其中,懸臂式斗輪堆取料機以工作結構動作靈活、作業(yè)范圍廣和對場地要求相對較低等優(yōu)點,成為目前最為常用的結構形式。它是由斗輪機構、前臂架、立柱、平衡機構、回轉機構、門座、走行機構和尾車等組成。其中斗輪機構是其實現(xiàn)取料功能的主要部件,它位于懸臂的最前端,其重量直接影響到整機的重量和平衡,因此它的輕量化對于整機的輕量化設計有著重要意義。本文的目的就在于獲得一個優(yōu)化的斗輪輪體。 本文在有限元分析軟件ansys的平臺上運用漸進拓撲優(yōu)化方法(ESO)對斗輪輪體進行拓撲優(yōu)化,得出最佳的輪體材料分布模型,采用應變能密度作為單元刪除準則,并運用了棋盤格控制方法,取得了較好的結果。接著對拓撲優(yōu)化結果進行簡化,提出了優(yōu)化原始模型——弧形輪輻輪體模型,同時考慮到加工制造問題,并結合以往設計經(jīng)驗,提出另一種模型—直輪輻輪體模型,并利用ansys白帶的尺寸優(yōu)化方法——子問題法,掃描法和一階方法,分別對兩種模型進行優(yōu)化,得出最優(yōu)輪體尺寸,并最終確定直輪輻輪體作為最終優(yōu)化結果。然后利用ansys對輪體進行瞬態(tài)分析和可靠性分析,證明優(yōu)化結果模型能夠滿足使用要求。 最后對斗輪進行了應力測試,將結果和有限元分析結果進行對比,驗證了文中有限元分析的正確性。斗輪優(yōu)化分析結果運用于實際,較相同取料能力機型重量有了大幅減輕,現(xiàn)場斗輪機構運行平穩(wěn),證明了該方法的有效性。
[Abstract]:Bucket wheel stacker-reclaimer is a set of large-scale continuous bulk material handling equipment in the world at present. Because it belongs to continuous production machinery with high productivity, it has been paid more and more attention by all countries in the world. At present, it has been widely used in large open-pit mineral storage yards, warehouses, power plants, gas plants and other fields, such as mining, metallurgy, power, transportation, building materials and chemical industry. Among them, the cantilever bucket wheel stacker and Reclaimer has become the most commonly used structure because of its flexible working structure, wide operating range and relatively low site requirements. Bucket wheel mechanism is the main component to realize the reclaiming function. It is located at the front of the cantilever. Its weight directly affects the weight and balance of the whole machine. Therefore, its lightweight is of great significance to the lightweight design of the whole machine.
In this paper, the progressive topology optimization (ESO) method is used to optimize the topology of bucket wheel on the platform of the finite element analysis software ansys. The optimal material distribution model of bucket wheel is obtained. The strain energy density is used as the deletion criterion of the element, and the checkerboard control method is used. The results of topology optimization are simplified. In this paper, the original optimization model, arc spoke body model, is put forward. Considering the problem of machining and manufacturing, and combining with previous design experience, another model, straight spoke body model, is put forward. The optimum wheel body size is determined as the final optimization result. Then the transient analysis and reliability analysis of the wheel body are carried out by using ansys, which proves that the optimized result model can meet the requirements.
Finally, the stress of bucket wheel is tested, and the results are compared with the results of finite element analysis to verify the correctness of the finite element analysis.
【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH246

【引證文獻】

相關碩士學位論文 前2條

1 李林林;自行火炮身管優(yōu)化方法及應用研究[D];南京理工大學;2013年

2 馮東拴;斗輪堆取料機控制系統(tǒng)優(yōu)化及應用研究[D];燕山大學;2013年

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本文編號：2242605