本文選題：重型板式給料機　切入點：驅動功率　出處：《吉林大學》2015年碩士論文　論文類型：學位論文

【摘要】：重型板式給料機是金屬和非金屬礦山物料轉載運輸自動化的關鍵設備,其性能直接影響到礦山開采運輸?shù)纳a效率和安全性。本論文結合國內重型板式給料機研發(fā)課題,對其在不同工況下的電機功率、動態(tài)性能以及關鍵零部件的結構強度進行了分析計算。首先,根據(jù)鏈條傳動原理,給出了驅動鏈輪所受總阻力的計算方法,在此基礎上得到了驅動鏈輪在滿載和空載工況下運行所需的功率。其次,運用多體動力學軟件RecurDyn中的履帶模塊建立了板式給料機的虛擬樣機模型,分析了重型板式給料機在空載和滿載啟動、穩(wěn)定運行和制動三個階段的電機功率,并且與理論計算結果進行對比,進一步驗證了理論計算的合理性。然后,建立了驅動軸的剛柔耦合模型,以得到的驅動功率為加載條件,分析了驅動軸在不同工況下的動態(tài)強度,提取了危險位置節(jié)點應力的實時變化情況,在此基礎上評價了驅動軸的可靠性。最后,建立了支架、驅動軸和鏈板等關鍵零部件的有限元模型,分析了危險工況下各關鍵零部件的強度和剛度,另外,對支架進行了模態(tài)分析,通過振型得到支架的薄弱部位,為改進設計提供指導。 本論文給出的重型板式給料機的電機驅動功率計算方法、虛擬樣機動力學仿真以及關鍵零部件的剛柔耦合模型建立過程和分析方法,為重型板式給料機的設計提供了參考。
[Abstract]:Heavy plate feeder is the key equipment for the automation of material transfer and transportation in metal and non-metal mines, and its performance directly affects the production efficiency and safety of mining and transportation. The motor power, dynamic performance and structural strength of key parts are analyzed and calculated under different working conditions. Firstly, according to the principle of chain transmission, the method of calculating the total resistance of driving sprocket is given. On this basis, the required power of driving sprocket under full load and no-load conditions is obtained. Secondly, the virtual prototype model of plate feeder is established by using the crawler module of multi-body dynamics software RecurDyn. The motor power of heavy-duty plate feeder in the three stages of no-load and full-load start-up, steady operation and braking is analyzed, and compared with the theoretical calculation results, the rationality of the theoretical calculation is further verified. The rigid-flexible coupling model of the driving shaft is established. The dynamic strength of the driving shaft under different working conditions is analyzed with the driving power as the loading condition, and the real-time variation of the node stress at the dangerous position is extracted. On this basis, the reliability of the drive shaft is evaluated. Finally, the finite element model of the key parts, such as the bracket, the drive shaft and the chain plate, is established, and the strength and stiffness of the key parts under dangerous working conditions are analyzed. Modal analysis was carried out to obtain the weak position of the support by vibration mode, which provided guidance for improving the design. In this paper, the calculation method of motor driving power of heavy plate feeder, the dynamic simulation of virtual prototype and the establishment and analysis method of rigid-flexible coupling model of key parts are presented, which provides a reference for the design of heavy plate feeder.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD634

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本文編號：1631053