The gyratory crusher is composed of a base, an eccentric sleeve, a broken cone, a middle frame, a crossbeam, an oil cylinder, a hydraulic pressure, a pulley, an electric control, a dry, a thin oil lubrication, etc.. The motor drives the eccentric sleeve through the belt pulley and the bevel gear, and when the eccentric sleeve rotates, the crushing cone is driven to rotate around the center of the crusher. So that the broken cone surface sometimes close to and sometimes leave the fixed cone surface, so that the material into the crushing cavity is constantly squeezed and bent and broken. The crushed material is discharged from the bottom of the crushing chamber by weight.