Eccentric block exciter type complex-frequency vibrating screen

The utility model relates to an eccentric block vibration exciter type complex frequency net-vibrating screen, belonging to screening machinery. The machine consists of a screen box, a main vibration exciter, an auxiliary vibration exciter, a rubber damping spring and a machine frame, wherein, the screen box connected on the machine frame through the rubber damping spring; the main vibration exciter comprises two eccentric block vibration exciters of the same specification and is crossly consolidated above the screen box, and the two eccentric block vibration exciters are respectively connected with two motors through an automobile transmission shaft; the outer wall of the screen box is simultaneously provided with a high frequency electromagnetic vibration exciter which is connected with the transverse shaft arranged below a screen mesh through a force transmission bolt and a driving vibration bar; a vibration arm is arranged on the transverse shaft; a rubber cap is arranged on the vibration arm; the rubber