本文選題：斗輪堆取料機 + 門座　； 參考：《中南大學(xué)》2011年碩士論文

【摘要】：斗輪堆取料機是一種廣泛應(yīng)用于港口、礦山、電廠等大型料場的高效的、連續(xù)的散裝物料的裝卸輸送成套設(shè)備。懸臂式斗輪堆取料機由于其具有的作業(yè)范圍更廣、工作結(jié)構(gòu)動作較靈活以及對場地要求較低等優(yōu)點,成為目前應(yīng)用最為廣泛的結(jié)構(gòu)形式。它的主要組成部分是斗輪機構(gòu)、前臂架、立柱、平衡機構(gòu)、回轉(zhuǎn)機構(gòu)、門座、走行機構(gòu)和尾車等。由于斗輪機體積龐大,自重非常大,而門座位于斗輪機的底部,承載上部結(jié)構(gòu)所有的載荷,對于整機的安全運行來說十分重要,可以說門座的結(jié)構(gòu)壽命在一定意義上決定了整機的使用壽命。 本文是以DQL1200／1200.35斗輪堆取料機的門座作為研究對象,利用有限元分析軟件ANSYS和Workbench,進行了門座鋼結(jié)構(gòu)的結(jié)構(gòu)強度、瞬態(tài)動力學(xué)和疲勞壽命的分析研究。摒棄了以往憑借設(shè)計經(jīng)驗的傳統(tǒng)設(shè)計方法,針對門座復(fù)雜的受力情況,結(jié)合其自身結(jié)構(gòu)特點,計算并選取適當(dāng)工況進行了有限元靜強度分析,并在分析結(jié)果的基礎(chǔ)上,改進部分設(shè)計參數(shù),解決了應(yīng)力集中超過許用應(yīng)力的問題；根據(jù)門座受載的特點,使用APDL語言編寫72組載荷點回轉(zhuǎn)循環(huán)的命令流程序,實現(xiàn)了模擬門座受動載荷狀態(tài),得到了應(yīng)力載荷譜等為后續(xù)的疲勞壽命分析提供了重要基礎(chǔ),同時也了解了門座結(jié)構(gòu)的局部應(yīng)力和位移隨時間變化的情況,確保了在整個運動周期內(nèi),門座的可靠性；門座的主要失效形式就是疲勞破壞,但由于所受載荷譜計算的復(fù)雜性以及零件S-N曲線未知性,往往忽略門座的疲勞壽命分析,而本文在材料S-N曲線的基礎(chǔ)上,結(jié)合其他影響構(gòu)件疲勞強度的因素,修正得到零件的S-N曲線,結(jié)合瞬態(tài)動力學(xué)分析得到的載荷時間歷程,對門座進行疲勞壽命分析,得到疲勞壽命分布,確保了門座的安全性和可靠性。最后對門座進行了應(yīng)力測試,將結(jié)果和有限元分析結(jié)果進行對比,驗證了文中有限元分析模型的正確性。
[Abstract]:Bucket wheel stacker is widely used in port, mine, power plant and other large-scale material yard, efficient, continuous bulk material handling and transportation complete equipment. The cantilever bucket wheel stacker has become the most widely used structure because of its wide range of work, flexible working structure and low requirements for the site. Its main components are bucket wheel mechanism, forearm frame, column, balance mechanism, rotary mechanism, door seat, running mechanism and rear car. Because the bucket wheel machine is huge in volume and heavy in weight, and the door seat is located at the bottom of the bucket wheel machine, bearing all the loads of the superstructure, it is very important for the safe operation of the whole machine. It can be said that the structural life of the door seat determines the service life of the whole machine in a certain sense. In this paper, the structure strength, transient dynamics and fatigue life of steel structure of DQL1200/1200.35 bucket wheel heap-taker are studied by using finite element analysis software ANSYS and Workbench. The traditional design method based on design experience is abandoned, and the finite element static strength analysis is carried out according to the complicated stress situation of the door seat and its own structural characteristics, and the finite element static strength analysis is carried out under the appropriate working conditions, and on the basis of the results of the analysis, the finite element static strength analysis is carried out. By improving some design parameters, the problem of stress concentration exceeding allowable stress is solved, and according to the characteristics of gate seat load, the command flow program of 72 groups of load point rotary cycle is written by APDL language, and the dynamic load state of door seat is simulated. The stress-load spectrum provides an important basis for the subsequent fatigue life analysis, and at the same time, the variation of local stress and displacement with time is also understood, which ensures the reliability of the gate during the whole motion cycle. The main failure form of the gate seat is fatigue failure. However, due to the complexity of the calculation of the load spectrum and the unknown S-N curve of the parts, the fatigue life analysis of the gate seat is often ignored. Combined with other factors affecting the fatigue strength of the components, the S-N curve of the components was revised, and the fatigue life distribution of the door seat was obtained by the fatigue life analysis of the door seat, combined with the load time history obtained by the transient dynamic analysis. The safety and reliability of the door seat are ensured. Finally, the stress of the door seat is tested, and the results are compared with the results of finite element analysis, which verifies the correctness of the finite element analysis model in this paper.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH237.1

【參考文獻(xiàn)】

中國期刊全文數(shù)據(jù)庫 前9條

1 趙繼俊，張錫清，，關(guān)吉堯;斗輪堆取料機門座架有限元分析[J];哈爾濱電工學(xué)院學(xué)報;1994年04期

2 楊珉;變頻技術(shù)在煤場斗輪堆取料機上的應(yīng)用[J];廣東電力;2004年02期

3 呂明薈;李毅民;;斗輪堆取料機的發(fā)展趨勢[J];港口裝卸;2008年02期

4 何路茵;;臂式斗輪堆取料機取料過程分析[J];機械研究與應(yīng)用;2009年03期

5 王玉興,唐艷芹,魏民祥,諸文農(nóng);懸臂式斗輪堆取料機的發(fā)展及研究動向[J];建筑機械;1999年08期

6 葉阜;張寶國;張起偉;韓剛?cè)A;;基于ANSYS Workbench的斗輪堆取料機關(guān)鍵零部件的有限元分析優(yōu)化[J];起重運輸機械;2008年12期

7 張起偉;王俊華;;斗輪堆取料機3支腿門座架計算與分析[J];起重運輸機械;2010年02期

8 童民慧,沈卓,王悅民;長懸臂斗輪堆取料機俯仰鋼結(jié)構(gòu)動力特性[J];上海海事大學(xué)學(xué)報;2005年01期

9 尹現(xiàn)吉;馬春雨;郝巖;;大型斗輪堆取料機三維有限元分析[J];試驗技術(shù)與試驗機;2006年03期

中國博士學(xué)位論文全文數(shù)據(jù)庫 前1條

1 靳慧;工程機械金屬結(jié)構(gòu)系統(tǒng)疲勞可靠性分析研究[D];西南交通大學(xué);2003年

中國碩士學(xué)位論文全文數(shù)據(jù)庫 前10條

1 王業(yè)文;輕型港口起重機結(jié)構(gòu)的動態(tài)分析[D];同濟大學(xué);2007年

2 耿華;斗輪堆取料機工作裝置動態(tài)特性研究[D];吉林大學(xué);2007年

3 馬春宇;大型斗輪機的結(jié)構(gòu)優(yōu)化及力學(xué)性能測試[D];吉林大學(xué);2007年

4 張玉華;大型斗輪機的振動特性分析及力學(xué)性能測試[D];吉林大學(xué);2007年

5 孫守勝;龍門起重機金屬結(jié)構(gòu)動力學(xué)研究[D];武漢理工大學(xué);2008年

6 沈康;某火炮搖架有限元動力分析與疲勞壽命預(yù)估[D];南京理工大學(xué);2008年

7 曾婷;門座起重機載荷譜及裂紋擴展特性的研究[D];武漢理工大學(xué);2009年

8 廖永亮;鉸接式轉(zhuǎn)向架構(gòu)架疲勞壽命研究[D];西南交通大學(xué);2009年

9 張晉偉;4125A型柴油機曲軸結(jié)構(gòu)有限元動力分析[D];西北農(nóng)林科技大學(xué);2009年

10 黃莉榕;機載環(huán)境下雷達(dá)波導(dǎo)的疲勞特性分析[D];南京理工大學(xué);2010年

本文編號：1811662