【摘要】：大型動(dòng)臂塔式起重機(jī)廣泛應(yīng)用于建筑施工中,特別是在高層建筑施工中,其幅度利用率比其他類型起重機(jī)高。大型動(dòng)臂塔式起重機(jī)在較小工作幅度突然卸載時(shí),由于變幅拉板的彈性作用力,若無可靠的防后傾裝置保護(hù),容易導(dǎo)致臂架后傾,甚至整機(jī)傾翻的危險(xiǎn)事故。因此,對防后傾裝置設(shè)計(jì)的研究具有重要意義。 本文以1600t·m超大型動(dòng)臂塔式起重機(jī)作為研究對象,采用虛擬樣機(jī)技術(shù)對大型動(dòng)臂塔式起重機(jī)防后傾裝置進(jìn)行研究,主要完成的內(nèi)容： (1)應(yīng)用Ansys有限元軟件建立臂架、人字架、塔身的柔性體模型,應(yīng)用Pro/E三維造型軟件建立回轉(zhuǎn)支座和平衡臂的剛性體模型,應(yīng)用ADAMS軟件建立變幅拉板和防后傾裝置,最后,在ADAMS軟件中組裝成完整的虛擬樣機(jī)模型。 (2)對按照經(jīng)驗(yàn)設(shè)計(jì)的防后傾裝置進(jìn)行仿真,分析防后傾裝置作用的效果。選擇78m臂長模型作為分析對象,并分析整機(jī)動(dòng)態(tài)性能。 (3)研究主要參數(shù)的改變,如防后傾彈簧的剛度、防后傾裝置鉸點(diǎn)的位置,對臂架后傾效果影響的規(guī)律,找到防后傾效果最好的參數(shù)組合,并和按照經(jīng)驗(yàn)設(shè)計(jì)的防后傾裝置的防后傾效果進(jìn)行對比分析,為防后傾裝置的設(shè)計(jì)提供參考。
[Abstract]:Large jib tower cranes are widely used in building construction, especially in high-rise building construction, its amplitude utilization ratio is higher than other types of cranes. When the large jib tower crane suddenly unloads in a small working range, because of the elastic force of the variable amplitude pulling plate, if there is no reliable protection against the backward tilting device, it is easy to lead to the dangerous accident of the arm frame tilting backward, even the whole machine overturning. Therefore, it is of great significance to study the design of anti-tilting device. In this paper, 1600t m super-large cantilever tower crane is used as the research object, virtual prototype technology is used to study the anti-tilting device of the large-sized bobbin crane. The main contents are as follows: (1) using the Ansys finite element software to build the boom. The flexible body model of the herringbone frame, the tower body, the rigid body model of the rotary support and the balance arm by using Pro/E 3D modeling software, and the variable amplitude drawing plate and the anti-backward tilting device with the ADAMS software, finally, A complete virtual prototype model is assembled in ADAMS software. (2) the anti-tilting device designed according to experience is simulated and the effect of anti-tilting device is analyzed. The 78m arm length model is selected as the analysis object, and the dynamic performance of the whole machine is analyzed. (3) the changes of main parameters, such as the stiffness of the anti-tilting spring, the position of the pivot point of the anti-tilting device, and the law of the influence on the backward tilting effect of the arm are studied. The best combination of parameters is found and compared with that of the anti-backward tilting device designed according to the experience, which provides a reference for the design of the anti-tilting device.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH213.3

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