Schwingsieb

A vibrating screen comprising a base (2), an upper vibrating structure (3), a plurality of elastic elements (4) interposed between the base (2) and the vibrating structure (3) for connecting them and allowing the vibrating structure (3) to elastically oscillate relative to the base (2), and at least one vibrating unit (5) mounted on the vibrating structure (3); the vibrating structure (3) comprising a supporting frame (6) on which a plurality of screening elements (7) is mounted and which comprises two lateral walls (11) and, for each lateral wall (11), at least one box-shaped reinforcing structure (16) applied to said wall; the lateral walls (11) each comprising an inner main surface (12) facing the other lateral wall (11) and an outer main surface (13) positioned on the opposite side to the inner main surface (12), the screening elements (7) being positioned between the inner main surfaces (12); and each box-shaped reinforcing structure (16) being hollow inside and being applied to the outer main surface (13) of the related lateral wall (11).