A fastening and tightening device for a side insulating canvas in conveying vehicles.

A fastening and tightening device for a side curtain or canvas in a transport vehicle or towing car, formed by an axletree (2) on the lower side of the platform (1) of the transport vehicle that runs along the entire length of this area, next to the side where the curtain or canvas (7) is located. The rotation of the axletree (2) is activated by an endless screw (6), preferably located in the middle of the axle. The latter is equipped with a longitudinal lug (3) or plate that extends tangentially from it and faces the direction opposite that of the canvas (7). A series of hooks (9) on the lower part of the canvas can be attached to the lug (3). The hooks are connected to the canvas by short, flexible straps (10) and the lower edge of the canvas is protected by a longitudinal strengthening band.