Abstract
Summary. The article presents the results of numerical analysis whose aim was to compare the basic dynamic and strength parameters of lightweight load-carrying crane structures made of aluminium alloys and steel. The analysis covered the typical construction of workshop cranes with a span of 3 to 5 meters, girders in the form of an Ibeam and maximum load capacities amounting to 5 tons. The values of stresses, deflections and natural frequencies were compared and then matched with the masses of the various structures. In the simulation a girder model was used and computed by the finite element method.
Highlights
Light cranes produced today are used in industry as mobile cargo handling equipment
The construction material mainly used for load-carrying structures is steel, but they are increasingly built from aluminium alloys [1, 2]
In order to analyze the impact of using aluminium alloys for the construction of crane structures in terms of strength parameters, numerical models of the discussed structure were built
Summary
Light cranes produced today are used in industry as mobile cargo handling equipment. From a theoretical point of view, they are among the basic machines that are used in the transport of freight. Mechanical vibrations caused by the intermittent work of enforcement mechanisms cause an induction of dynamic loads in each transshipment cycle, which affects both the construction of the device and its operation [3] Such cranes are easy to transport and install—in most cases human muscle strength without specialized hardware is enough. Another difference from steel load-carrying structures is the method of manufacture. The structure of the analyzed cranes is made of aluminium alloy with magnesium and silicon Such alloys have good mechanical properties and enhanced corrosion resistance, in water and maritime atmospheres. They are mainly used for medium stressed parts of ships and cranes, as well as in the aerospace industry
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