On preventing resonance condition in operation of rotary excavators

Abstract

The article examines the causes of forced vibrations of the rotor. It was found that the increased tendency of rotary excavators to oscillate is caused by the frequency of scooping, which leads to self-oscillation. The frequencies of natural and forced rotor vibrations during the digging of different soils are determined depending on the speed of rotation of the working body and the depth of digging. The dynamic stability of the movement of the working body under the horizontal elastic pliability of the structure is investigated. The condition of occurrence of resonant phenomena during operation of a trench rotary excavator is determined. © 2020 IOP Publishing Ltd. All rights reserved.