Loading hydraulic cranes are working machines designed to lift and move heavy loads within their working area. They consist of several components, which are divided into a load-bearing structure and a hydraulic system. One of the main components is the telescopic swing arm, which, due to the nature of the work, is subjected to various repetitive loads. As a result, these parts are exposed to fatigue injuries.
The thesis deals with the review of key standards for the control and determination of loads of hydraulic loading cranes. A mathematical model of the crank mechanism was developed, which allows the calculation of loads in different positions. With the help of the finite element method, we analyzed the stress state of the existing telescopic arm and, on the basis of the analysis carried out and the obtained results, examined the effects of various shapes of profiles and guide elements.
We proposed three new construction solutions, which we analyzed using the finite element method and compared the results with the analysis of the existing implementation, and also commented on the results. We found that the first proposed solution with the implementation of new guide shapes is the most robust of the three proposed solutions.
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