Bolting operability in fasteners of tilting support device cranes
DOI:
https://doi.org/10.33408/2519-237X.2026.10-1.118Keywords:
crane, rotary support device, bolting, loss of operability, ANSYS simulation, tightening torque, corrosionAbstract
Purpose. Improving the operability of bolted connections of support and turning devices of cranes by early detection of defects based on a system analysis of factors (causes) affecting the failure of fasteners.
Methods. Analysis of the results of theoretical and experimental studies of the reliability of fasteners of flange connections, taking into account dynamic loads; modeling of the process of loss of functional capability of a bolted connection taking into account load redistribution.
Findings. The main reasons for the failure of bolt assemblies of lifting cranes in the form of non-cyclic dynamics of functional loads, combined impact of various types of loading, which is not taken into account in the design calculation of the thread diameter, as well as the direct influence of subjective factors, have been identified. The recommendations are formulated on the control of bolt connections (in accordance with the Rules for ensuring the industrial safety of lifting cranes), which substantiate and specify the operations for checking: tightening torque, the presence of defects (cracks) in the bolt body, surface areas affected by corrosion.
Application field of research. Installation and operation of lifting cranes equipped with a flange-type rotary support device with bolting.
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Copyright (c) 2026 Smillovenko O.O., Martynenko T.M., Losik S.A., Poluyan A.I., Kazutin E.G.
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