В.А. Подгорбунский, Н.А. Орехов, В.И. Сероштан
12
Evaluation of hoisting machines performance
in the presence of fatigue cracks
© V.A. Podgorbunskiy, N.A. Orehov, V.I. Seroshtan
Kaluga Branch of Bauman Moscow State Technical University, Kaluga 248000, Russia
The article deals with theoretical contributions of assessing stress-strain state of metal
elements of hoisting machines (PMG) in the presence of such damages as fatigue cracks.
We assessed the operability of the damaged crane fabricated metals and presented the
results of this analytical research analysis. The findings of the research provide us with a
technique of assessing hoisting machine operability when detecting fatigue cracks in
their fabricated metals. The research has focused on actions for extending the service life
of the crane fabricated metals having fatigue cracks, including repair work for strength-
ening the damaged parts of hoisting machines by filling-in cracks in vertical plates of
beams, in cord plates and in plates of fastening ally arms. We offer a checking calcula-
tion method for fabricated metals, taking into account repair work done.
Keywords
: framed metals, hoisting machines, checking calculations, fatigue cracks, per-
formance assessment.
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