動臂塔式起重機防后傾裝置的研究
[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.
【學位授予單位】:大連理工大學
【學位級別】:碩士
【學位授予年份】:2012
【分類號】:TH213.3
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