Control device for opening and closing open top bodies in industrial vehicles

Control device for both opening and closing the sheets used to cover the open top bodies in the industrial, agricultural and/or similar vehicles. The device is constituted by a telescopic tubular element (9) within which is placed a pair of bevel gears (7a-7b) which move the vertical driving pulleys (6a and 6b) and the rear vertical pulleys (4d-4s) by previous passage through the horizontal pulleys (5d - 5'd and 5s - 5's). One of said cable rings (3d-3s) presents crossed lengths (3c-3f) in order to move in the same direction the upper length of the cable (3a) which, in their turn, pull the centering (21a) solidly fixed on them, The centering (21a) moves the other centerings (21b) in the closing or in the opening position by means of its connection with the sheet (2). The whole is operated by a driving shaft (8) and a crank (81) or by a suitable power device.