ANALYTICAL METHOD FOR DETERMINING DRIVE POWER OF TOOTHED ROTARY CRUSHER
The paper proposes a method for analytical determining the main power parameters of crushing process in a single-rotor toothed grate crusher. Using the basic laws of general mechanics and solid mechanics, mathematical laws are justified to determine the forces of material crushing in the area of receiving table and grate. Based on Poinsot’s theorem, the loads are taking by the bearing supports of the crusher rotor are determined. There have been given the dependences of resisting moments on forces of material crushing in zone of receiving table and grate, on forces of material cake gravity, as well as in bearing supports. Dependence is obtained to determine the required power of crusher drive at steady-state operation. Based on the obtained dependencies, the power parameters of the drive of a single-rotor toothed crusher in the sinter shop of Branch № 12 CJSC «VNESHTORGSERVIS» for various types of rotor were obtained, which allows to increase the technical and economic indicators of the iron-ore sinter crushing process.