Open AccessThe dynamic loads, which arise in main beam of bridge crane
Author(s) -
Nataliia Fidrovska,
Oleksandr S. Chernyshenko,
Ihor Perevoznyk,
Viktoriia Nesterenko
Publication year - 2021
Publication title -
vestnik harʹkovskogo nacionalʹnogo avtomobilʹno-dorožnogo universiteta
Language(s) - English
Resource type - Journals
eISSN - 2521-1773
pISSN - 2219-5548
DOI - 10.30977/bul.2219-5548.2021.92.1.188
Subject(s) - bridge (graph theory) , beam (structure) , vibration , structural engineering , span (engineering) , process (computing) , mechanism (biology) , displacement (psychology) , computer science , engineering , physics , acoustics , medicine , psychology , quantum mechanics , psychotherapist , operating system
Install, what about 80 % rejections of contemporary weight-lifting machines bond with dynamic loading, which bring to higher shabby surface of frictionless, tiredness destriction hardware and details of mechanism, appearance inadmissible residual strains. That witness about important dynamic calculations, without which impossible create of machines with elevated degree technique – economical index. The questions reduce hardware of bridge cranes are rather actual, therefore elaboration methods calculations of metallic constructions bridge of cranes have important meaning. The dynamic process which arise in metallic constructions of cranes considerable increase strain conditions of beams and due take into consideration at calculations. On the article consideration questions vibrations in main beam of bridge crane, which appears during the moving through the bridge of carry cart. It is taken as a condition, that mass which equally distributed on the whole of the length of the beam, is concentrated in three points, that are in the middle of a span and two border points. Follow the calculations with take into consideration conditionally placing of rail on crane bridge and the law distribution of loading from motion wheels which motion on beam. In this take into consideration characters of beam that is her span, hard of section and intensive distribution of mass in main beam. It is made a conclusion about the influence of characteristic of beam on the resonance regime of vibration.