СОВЕРШЕНСТВОВАНИЕ МЕТОДОВ ВИБРОДИАГНОСТИКИ ИЗНОСА ЗУБЬЕВ ШЕСТЕРЁН ДИФФЕРЕНЦИАЛЬНОГО РЕДУКТОРА ТУРБОВИНТОВОГО ДВИГАТЕЛЯ

Abstract

In the article presents results of complex research of vibration .state of the differential reducer of turboprop engine on the basis statistics of products with repaired reducers and delivered in for repair. The conducted researches have allowed to establish a source of resonant oscillations of design elements of the compressor, leading to their brea¬kage. It is established that this source is determined by the kinematics of the reducer and is associated with the wear of the teeth of its gears. Based on the work carried out the norms on intensity of the corresponding discrete component of the spectrum of vibration of the reducer and on the amount of permissible wear are substantiated and established. Identified the complex of diagnostic parameters of wear based on intensity components of the auto-spectrum and spec-trum of maxima, the depth of amplitude modulation in some narrow-band processes, their characteristics based on the parameters of the current frequency and mutual characteristics. It is shown that for the whole complex of received diagnostic parameters their dependence on the wear value is satisfactorily approximated by a linear characteristic. The obtained results can serve as a basis for development of complex vibration diagnostic methods of differential reducers.