Patent Number: 
Section: abstract

A cleaning device includes an external casing (1) forming a suction hood and an upper suction mouth (2) and being provided with drive arrangements arranged on each side and equipped with independent motors and corresponding transmission mechanisms on each side; and cleaning rollers (51, 52, 53, 54); sets of internal cleaning rollers (53, 54) disposed close to the center of the hollow interior of the casing (1) and having a width approximately equal to the distance between the side elements (11) of the casing (1); sets of external cleaning rollers (51, 52) located close to the front and rear edges of the casing (1) of the cleaning device and having a total width slightly greater than the width of the casing; a resilient joint at the support for the external rollers; an adhesion turbine, a suction turbine, and auxiliary drive wheels on the internal cleaning rollers.