Abstract: The present loading wharf comprises a compact structure (1) secured to the perimeter of the opening providing access to the vessel which defines, between the inner and outer faces of the wall, an intermediate space (2) for the placing of the protective means (4,5) and the folding ramp (7), with the possibility of movement between an operational position in which said means and ramp project from said intermediate space (2) towards the outside, in order to interact with the body or trailer of the vehicle to be loaded or unloaded, and a non-operational position in which said means and ramp are positioned inside said intermediate space (2) and are oriented vertically. Said compact structure comprises, corresponding to the outer and inner faces of the wall, frames (1a, 1b) for the mounting of an exterior closure door (3a) and of an interior door (3b) which is preferably of the raid-opening type.

Abstract: The present invention comprises two sheets of canvas fabric or curtains and means for rolling up vertical strips or bands connected to intermediate crosspieces that move along guides when the strips are taken up. The crosspieces have a hollow cross section with an upper ridge and a lower ridge with holes for the strips to pass through. The crosspieces have, on the outer lateral faces, at least one groove for the fastening, by means of a bead, of bands for joining to the adjacent curtain. The inner faces of the crosspiece have one or more rounded longitudinal projections for guiding the displacement strips. The crosspieces comprise shock-proof elastic element arranged on the upper and/or lower ridge.

Abstract: This door comprises a structure with pillars and/or longitudinal members, two or more parallel drums for winding up respective closure elements, and guides for the parallel, guided displacement of said closure elements. The openings of the guides are arranged in a stepped fashion for the insertion of the closure elements in a consecutive position in accordance with the sequence of arrangement of the respective drums.

Abstract: This system is comprised of an insulated access door (6), which makes for the closure of the cold room (4) in coming into contact with the door frame (1) fixed onto the entrance (2) of said cold room (4), and a quick opening door made up of a moveable sheet (8) and the corresponding means of activation (9, 10). These means of activation are to be fixed to the exterior of the cold room (4). There is also a longitudinal slit (7) fixed onto the door frame (1) so that the sheet (8) can pass, this sheet (8) being able to effect the closure either in front of or behind the insulated door (6). The system includes a stopper device (7) which can close the slit (7) in order to minimize the temperature loss through same, and some means (71 and 161) of heating the slit (7) and some guides (16) on which the sheet (8) moves to its open or closed position.