The operation of any machine includes three periods of operation: start and acceleration, steady motion, braking and stopping. During periods of start-up and braking, large dynamic loads occur, adversely affecting the strength of machine elements and the overloading of the drive source. The purpose of the study is to determine the dynamic loads during the start-up of the machine and to find options for reducing them. The mathematical values of dynamic loads are determined by the example of a spatial mixer from rotating elements of the drive. It has been established that the dynamic moments from the rotating elements of the drive are several times greater than those from static loads. Practical methods are shown to reduce these loads using an elastic coupling, removing the coupling from the structure, manufacturing it from composite materials, and increasing the start-up time of the electric motor. The significance of the results obtained for machines using transmissions through couplings consists in a substantial reduction of the influence of dynamic loads during start-up on the elements and source of the drive and an increase in the service life and productivity of the machines as a whole.
Verification for the simulation model of submersible electric motor with downhole compensator based on the bench tests results
