On the question of determining the vibration exciter power

Abstract

At the moment, vibration exciters of different designs are widely used for all kinds of technological operations. The use of vibration makes it possible to reduce labor intensity and the cost price of manufacturing costs. This paper presents the results of a study of the mechanism of excitation of vibrational motion, from which it is obvious that the size of the body, the runner and the adopted eccentricity affect the value of the power of the vibration exciter. The results on the size of the body, the eccentricity and the value of the unbalanced mass - a runner - moving on the inner surface of the cylindrical body and exciting vibration oscillations during movement are presented. The maximum power of the vibration exciter, depending on whether the runner will be pressed by centrifugal force to the cylindrical outer surface of the vibration exciter over the entire length of the surface, is determined. If the runner cannot be pressed to the cylindrical surface of the vibrator by centrifugal force, then at the working speeds of the PTO (750 and 1000 rpm) there will be areas of the surface where the runner will be pressed against the surface and exert vibratory oscillations. On the remaining surface, the runner will slip past the cylindrical surface, causing a knock, and will not excite vibratory oscillations. The surface areas where the runner will not excite vibratory oscillations were determined. The knock refers to the vibratory oscillations of the runner. The knocking occurs in a runner who has not gained maximum speed and therefore is not pressed against a cylindrical shaped body. Transmission of vibration energy to the vibrator body comes from the energy of the runner. The runner, touching the hull, experiences the impact of inertial forces on the hull. The runner excites external forces that transfer vibration energy to the vibration exciter.