Selected aspects involved in the optimization of cranes with pivoting booms

Stefan Chwastek

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Abstract

Certain crane operations – hoisting/lowering the payload connected to a slewing jib – require a nonlinear description to take Euler and Coriolis forces into account, the impacts of which should already be minimised at the stage of selection of the system parameters and mechanism structure. Optimal sets of parameters for the crane mechanisms thus obtained were optimised for the full range of slewing motion. It is demonstrated that the selection of the geometric dimensions of the structural elements of the hoisting mechanisms, i.e. the slewing system and counterbalances, enables the horizontal track error load to be minimised whilst the forces acting on the mechanism and inducing its vertical movement can be reduced. Thus, for the assumed lifting capacity and distance jaunt we get the structure of the crane mechanism that guarantees the minimal consumption of energy.

Keywords

cranes, counterbalance, pivoting jib, slewing system, Euler's forces, Coriolis forces, energy consumption, nonlinear and non-stationary differential equations of motion, vibration, parametric optimisation, horizontal track error load, one-link jib crane

References

[1] Chwastek S., Optimisation of Crane Mechanisms – Selected Problems, Key Engineering Materials, Vol. 542, Feb. 2013.
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[5] Zrnić M., Gaši V. Bošnjak S. Đorđević M., Moving Loads in Structural Dynamics of Cranes: Bridging the Gap Between Theoretical and Practical Researches, FME Transactions, 292, VOL. 41, No 4. 2013.
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[7] Dong Soo Kim, Jongsoo Lee, Structual Design of a Level-Luffing Crane Through Trajectory Optimization and Strength-based Sized Optimization. Structural and Multidisciplinary Optimization, Struct. Multidisc Optim., 2015, 515–531, DOI 10.1007/s00158-014-1139-2.

Information

Information: Technical Transactions, 2018, Volume 4 Year 2018 (115), pp. 159 - 171

DOI: https://doi.org/10.4467/2353737XCT.18.064.8376

Article type: Original article

Titles:

Polish:

Selected aspects involved in the optimization of cranes with pivoting booms

English:

Selected aspects involved in the optimization of cranes with pivoting booms

Authors

Stefan Chwastek

Faculty of Mechanical Engineering, Cracow University of Technology

Published at: 27.04.2018

Article status: Open

Licence: None

Percentage share of authors:

Stefan Chwastek (Author) - 100%

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English

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