The load on the supporting structure of the gantry crane during travel along the crane track

The paper presents the analysis of the gantry crane loading when travelling along the crane track, using a 3D model, which was used for the analysis of the gantry crane support construction under the loading. The gantry crane is designed to remove dirt that is in front of the turbine under the water surface. The gantry crane, which travels along a track, was subjected to investigation, and the directional and vertical unevenness at the time of travelling were determined and are given in graphic form in mm] for A track and B track with a total track length of 450 m. Based on the knowledge of the unevenness of the rail track, four random functional dependencies, defining the unevenness of the individual rails, were used as input variables for the kinematic excitation of the individual wheels of the gantry crane. The stress analysis was performed for a travel speed of 30 m/min and a lift of 10 t. The results of the stress analysis are presented in graphic form. In addition to the operating load, the inherent frequencies of the crane construction are also an important factor, which, along with the excitation frequency, can affect the overall global loss of the crane stability. The stability of the crane during its operation is closely related to the load applied to the crane supporting construction. In computer simulations, stability is expressed by a critical force (Fcrit.) and when it is exceeded, local or global stability will be lost. In the paper, the first 10 eigenfrequencies of the crane are given in table form, and the first three eigenshapes are shown in graphic form. The overall loss of crane stability, which is expressed by the critical force (Fcrit.), is also shown in graphic form.

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Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).