Device for cleaning grooved surfaces such as escalators or gangways

A device for cleaning grooved surfaces, such as moving escalators or gangways, said grooved surfaces having spaces between the grooves where dirt collects, comprising:

• a casing;
• a rotatingly driven roll brush arranged in said casing, said roll brush having bristles and defining a rotation space;
• a spraying device arranged in said casing for spraying cleaning liquid;
• a suction device arranged in close proximity to said roll brush for removing loosened dirt particles from the rotation space of the roll brush;
• and
• a plurality of comb-like devices arranged in front of and behind the roll brush in the direction of movement of the escalator or gangway, said comb-like devices engaging the spaces between the grooves in the escalator or gangway and, in combination with the casing, sealing the rotation space of the roll brush from the outside,
• wherein the spraying device wets the grooved surface, the roll brush loosens dirt on the grooved surface and collects the loosened dirt, and the suction device removes the cleaning liquid and loosened dirt from the roll brush.