Two-way shifting device for tables

In a table, in particular for camper vans or other vehicles for recreational activities, a support device having linear guides allows to move the top of the table in two directions orthogonal to each other and lying in the plane parallel to the top of the table. A device for locking the sliding movement includes brake assemblies associated to the guides, all of them operated by a single actuating means, associated to one of the brake assemblies.