Abstract
The acoustic system of the overhead traveling cranes includes the following diverse sources of acoustical radiation: rails, wheel sets, a base frame, gears and motors of the lifting and moving mechanisms. The acoustic characteristics of the motors do not exceed the maximum permissible sound pressure levels. The gearboxes as the sources of noise and vibration are the most complicated units; moreover, they arrive at the manufacturing factories already being assembled. Therefore, when assessing the sound pressure levels of the cranes in whole, it is advisable to use the experimental data of the noise and gearbox vibration spectra.
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