Holding and tensioning device for an isothermal curtain for carrier vehicles

HOLDING AND TENSIONING DEVICE OF AN ISOTHERMAL CURTAIN FOR CARRIER VEHICLES comprising a shaft arranged at the side lower portion of the loading platform of a refrigerator vehicle or trailer, and all along and close to the side where a vertically-overhead external insulating curtain (11) is provided. Said shaft (5) having a plurality of supports (3, 4) and an endless screw providing the shaft with a rotating motion by means of a handle or electric motor couplable to a head (2). All along the shaft (5) a plurality of regularly distributed webbings (6) joined with a flatbar (7) arranged proximate to the platform side edge are located and secured by two U-shaped supports (10) mating with respective horizontal sliders whereon said flatbar (7) can be moved as stretched by the webbings when screwing up or unscrewing down on the shaft (5). The flatbar (7) is suitable for being fitted to a plurality of flat hooks (12) arranged at the curtain lower selvedge for the curtain pulling and tautening, a longitudinal backup (13) at said curtain (11) selvedge is also provided.