Energy-saving crushing vibrating screen

The utility model discloses an energy-saving crushing vibrating screen, and relates to the field of span processing. The vibrating screen comprises a vibrating screen body and a vibrating containing cavity, a transmission assembly is arranged in the vibrating screen body and comprises a motor, a connecting rod is arranged on the central axis of the vibrating containing cavity, an annular groove is formed in the top of the connecting rod, a rotating mechanism is arranged on the annular groove in a sleeved mode, and the rotating mechanism comprises a lantern ring. Through the annular groove, the lantern ring and the fan blades, the span in the vibration containing cavity is crushed through the eccentric block, meanwhile, the limiting groove limits the output end of the motor to drive the whole vibration containing cavity to do elliptical circular motion, the center shaft of the lantern ring serves as an eccentric shaft, the lantern ring and the annular groove rub back and forth, and therefore the span can be cr