Support device, of the drop head type, for supporting beams of formworks for floor slabs, apparatus comprising such device and supporting beam to be associated with the device

A support device, of the drop head type, for supporting beams of formworks for floor slabs, which comprises an upright, a supporting head coupled to said upright, and a lower shank, said supporting head in turn comprising:

• two plates which are arranged mirror-symmetrically and laterally adjacent to mutually opposite sides of said upright,
• at least two mirror-symmetrical recesses, each one obtained on a respective one of said plates,
• wherein said lower shank, which protrudes from a shank plate at a lower end of said upright, is open on opposite sides and wherein inside said lower shank there is an engagement element with which elastic means are associated and which can rotate about an axis which is transverse to said lower shank, from a first configuration to a second configuration for which it is adapted to protrude with a hook-shaped portion from a hole provided in the upright above said shank plate, said engagement element being pushed so as to rotate by the elastic means,
• said device being provided with resting regions, of which one resting region is for resting the end of a supporting beam against a lateral part of said upright and two are a pair of mirror-symmetrical resting regions on said at least two recesses, each one of said recesses being substantially V-shaped with at least one of the side walls being planar and inclined by an extent such as to define a variable resting along said side wall.