Machinery & Energetics

The paper is devoted to solving a practical problem of the crank-rocker swing mechanism optimization of the radial-rotary conveyor, which is used for the distribution of bulk materials along the radial arc. Optimization in this case means the selection of such dimensions of the mechanisms elements, in which the moment of the resistance forces, reduced to the first element and caused mainly inertial loads arising from the swing motion of the platform with a conveyor mounted on it, are minimal. To solve this problem, first of all a kinematic synthesis of the crank-rocker swing mechanism is perform, which consists in finding the dimensions of the mechanisms elements under the conditions of synthesis (implementation of the desired motion). Next step is kinematic analysis, which determines the acceleration of the mechanisms elements on which the forces of inertia directly depend. Finally, the force analysis is perform, as a result of which the moment of the acting forces, reduced to the first element of the mechanism, is defined. On the basis of the carried-out calculations the variant of the mechanism with such sizes of elements at which the consolidated moment of resistance is minimum is chosen. As a result of optimization due to the choice of rational sizes of mechanisms elements the resistance of movement decreases and the required capacity of the conveyor swing mechanism drive is reduced.

mechanisms optimization, crank-rocker mechanism, mechanisms synthesis, inertial loads