The dynamic analysis of the joint trolley movement and hoisting mechanism in the tower crane

Authors

DOI:

https://doi.org/10.32347/2410-2547.2022.108.267-282

Keywords:

dynamic, analysis, tower crane, joint movement, hoisting mechanism, hook blocks, load, optimization

Abstract

The task of this paper is to research the simultaneous use of trolley and hoisting mechanism by the tower crane with a beam jib. To conduct research, a dynamic model of joint movement of mechanisms has been developed, which takes into account the main movement of drive mechanisms and oscillating movement of the load on a flexible suspension and links of mechanisms with elastic properties. A mathematical model of the motion of mechanisms is constructed on the basis of a dynamic model with the help of Lagrange equations of the second kind. For a specific jib system of the tower crane, dynamic calculations were performed using the developed mathematical model. According to the results of the calculations, a dynamic analysis of the joint movement of trolley and hoisting mechanism was carried out. The analysis revealed significant dynamic and energy overloads of mechanisms during transients (start, braking) and the presence of high-frequency oscillations in the links with elastic properties and low-frequency oscillations of the load on a flexible suspension.

To reduce the overload of crane mechanisms in the areas of transients and eliminate oscillations during steady traffic, it is recommended to optimize traffic modes and develop drive control systems to implement the desired traffic modes.

Author Biographies

Viacheslav Loveikin, National University of Life and Environmental Sciences of Ukraine

Doctor of Technical Science, Professor, Head of the Department of Machine and Equipment Design

Yurii Romasevich, National University of Life and Environmental Sciences of Ukraine

Doctor of Technical Science, Associate Professor, Professor of the Department of Machine and Equipment Design

Liubov Shymko, National University of Life and Environmental Sciences of Ukraine

Candidate of Technical Science, Associate Professor, Department of Technical Service and Engineering Management

Yurii Loveikin, Taras Shevchenko National University of Kyiv

Candidate of Physical and Mathematical Science, Associate Professor of Differential and Integral Equations

Kostiantyn Pochka, Kyiv National University of Construction and Architecture

Doctor of Technical Science, Professor, Head of the Department of Vocational Education

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Loveikin V. S., Pochka K. I., Prystailo M. О., Balaka M. M., Pochka O. B. Impact of cranks displacement angle on the motion non-uniformity of roller forming unit with energy-balanced drive. Strength of Materials and Theory of Structures. 2021. Issue 106. P. 141–155. DOI: 10.32347/2410-2547.2021.106.141-155.

Loveikin V. S., Pochka K. I., Prystailo M. О., Balaka M. M., Pochka O. B. Impact of cranks displacement angle on the motion non-uniformity of roller forming unit with energy-balanced drive. Strength of Materials and Theory of Structures. 2021. Issue 106. P. 141–155. DOI: 10.32347/2410-2547.2021.106.141-155.

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Published

2022-05-30

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