Online natural vibration screening device

The utility model belongs to the technical field of material screening, and particularly relates to an online self-vibration screening device which comprises a conveying assembly and a screening box, an opening is formed in the screening box, the conveying assembly partially extends into the opening, a material guide plate is rotatably arranged on the inner wall of the screening box, and the material guide plate is driven by a rotating mechanism to rotate. Two screening assemblies are arranged on the lower wall of the screening box, and the two screening assemblies are arranged in a relatively inclined mode; the lower end of the material guide plate can be in butt joint with any one of the material screening assemblies by rotating the material guide plate. The whole screening process does not need manpower, physical screening can be achieved only through resonance generated by self-weight striking of materials, the crushing efficiency is improved, the load and abrasion of crushing equipment are reduced, and c