Factory-type apparatus for producing prestressed concrete products

A monoblock factory or installation for the manufacture of concrete products, in particular prestressed and/or reinforced concrete products, comprising a rotary supporting housing of a general cylindrical shape having a horizontal axis of rotation, a plurality of working stations mounted on a construction disposed in the interior of said housing, and a plurality of conveying moulds, for the concrete products, disposed on the internal surface of said housing so as to cause these moulds to pass in front of various of said working stations, the said working stations comprising a concrete-casting installation, a heat-treatment installation and a mould-stripping and manufactured products discharge installation, said factory being characterized in that the rotary housing comprises a rotatable circular carrier structure having a horizontal axis and supported by means permitting the rotation of the said carrier structure on its axis, means for rotating said carrier structure and means resistant to longitudinal stresses in a direction parallel to the axis of rotation of the carrier structure, said resistant means being disposed radially inwardly of the carrier structure toward the axis of rotation and being fixed to the carrier structure, and comprising elongate longitudinal extending members defining longitudinal recesses extending parallel to the axis of rotation of the carrier structure and provided around the entire internal periphery of the said carrier structure, the said recesses receiving sets of moulds for the products to be manufactured, the said resistant means comprising at one longitudinal end, means for the attachment of reinforcement wires of the concrete products and, at its other longitudinal end, means for tensioning the reinforcement wires, such that the tensile stresses of these wires are taken up exclusively by the aforesaid resistant means.