UDC 621.852
INTEGRATED APPROACH TO IDENTIFICATION AND ELIMINATION OF VIBRATION DEFECTS
IN V-BELT TRANSMISSION OF INDUSTRIAL EQUIPMENT
S. V. Antonychev, vibration analyst, category II, CEO, Energopromservis LLC, Moscow, Russia;
orcid.org/0000-0000-0000-0000, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A. V. Antsev, Dr. in technical sciences, Associate Professor, Head of the Department, Tula State University,
Tula, Russia;
orcid.org/0000-0002-0923-6285
M. S. Vorotilin, Dr. in technical sciences, Professor, Deputy Rector for Research, Tula State University,
Tula, Russia;
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
E. G. Ezhov, CEO, IS SISTEM LLC, Moscow, Russia;
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
E. I. Minakov, Dr. in technical sciences, Professor, Radio Electronics Department, Tula State University,
Tula, Russia;
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
E. S. Yanov, Dr. in technical sciences, Deputy Director, Tula State University, Tula, Russia;
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The aim of the work is to identify the systemic causes of increased vibration of CTE790–40 V-Belt
transmission and to develop methods to eliminate them. Methods of vibration diagnostics, spectral and temporal analysis, thermal imaging control, and laser angulometry are applied. The main defects were identified: angular misalignment of pulleys (1.25 ° on motor shaft, 1.4 ° on driven shaft), inconsistency in installed belt geometry (B 145 3750 Le/3688 Li instead of standard 3 HB 3750 Ld/3765 La), incorrect tension and imbalance of electric motor rotor. Periodic shock pulses with repetition frequency of 3.79 Hz were detected
in temporary vibration displacement signal, and harmonics that are multiples of belt rotation frequency
(15.16, 30.32, 34.11 Hz) dominate in spectra. Thermal imaging monitoring recorded engine overheating to
68.7 °C at 46 °C. Partial implementation of measures (belt replacement and tension adjustment) reduced the
vibration velocity from 24.4 to 9.9 mm/s, which confirmed the correct diagnosis. A full range of measures is
proposed: balancing, manufacture of a new shaft, alignment of pulleys, tension control. The results can be
used to create an intelligent system for continuous monitoring of cooling tower vibration.
Key words: V-Belt transmission, vibration diagnostics, spectral vibration analysis, thermal imaging control,
angular misalignment of pulleys, electric motor balancing, industrial equipment, cooling tower, vibration
defects, integrated approach