Structure for the transport and utilisation of portable equipment, said portable equipment including several elements, said structure comprising: - two trays (1, 2), each having a base (8, 32) intended to serve as a support for one or more elements of the equipment, each base (8, 32) having an external face (8a, 32a) and an internal face (8b, 32b) which is intended to be orientated towards said element or elements, - a cover, - means for connecting the cover,with said trays (1, 2), said structure being configurable in at least three configurations, namely: - a configuration, called transport, in which the cover, forms one piece with the two trays (1, 2), and covers each internal face (8b, 32b) of each tray (1, 2), so as to form, with at least each internal face (8b, 32b) of each tray (1, 2), at least two housings (L1, L2) which are adapted to contain the elements of said equipment, and which are in a folded position relative to each other, with the bases (8, 32) of the trays (1, 2) facing each other, - a configuration, called intermediary, in which the cover, forms one piece with the two trays (1, 2) and forms with each tray (1, 2), the same two housings (L1, L2) as for the transport configuration, but in which the trays (1, 2) are positioned relative to each other in such a way that the external faces (8a, 32a) of the bases (8, 32) of the trays (1, 2) may be positioned on the same support plane, and - a configuration, called utilisation, in which the trays (1, 2) are in the same position as for the intermediary configuration, and in which the cover is at least partially disengaged from the two trays in such a way that the internal faces (8b, 32b) of the bases (8, 32) of the trays (1, 2) are uncovered and directly accessible, said structure further permitting, in the three configurations, the passage of one or several connecting cables from one tray to the other for the connection of one or more elements supported by the internal face of the base of the tray with one or several other elements supported by the internal face of the base of the other tray. - two trays (1, 2), each having a base (8, 32) intended to serve as a support for one or more elements of the equipment, each base (8, 32) having an external face (8a, 32a) and an internal face (8b, 32b) which is intended to be orientated towards said element or elements, - a cover, - means for connecting the cover,with said trays (1, 2), - a configuration, called transport, in which the cover, forms one piece with the two trays (1, 2), and covers each internal face (8b, 32b) of each tray (1, 2), so as to form, with at least each internal face (8b, 32b) of each tray (1, 2), at least two housings (L1, L2) which are adapted to contain the elements of said equipment, and which are in a folded position relative to each other, with the bases (8, 32) of the trays (1, 2) facing each other, - a configuration, called intermediary, in which the cover, forms one piece with the two trays (1, 2) and forms with each tray (1, 2), the same two housings (L1, L2) as for the transport configuration, but in which the trays (1, 2) are positioned relative to each other in such a way that the external faces (8a, 32a) of the bases (8, 32) of the trays (1, 2) may be positioned on the same support plane, and - a configuration, called utilisation, in which the trays (1, 2) are in the same position as for the intermediary configuration, and in which the cover is at least partially disengaged from the two trays in such a way that the internal faces (8b, 32b) of the bases (8, 32) of the trays (1, 2) are uncovered and directly accessible,