FIELD: construction.
SUBSTANCE: device includes working element and drive mechanism. Working element is arranged in the form of profiled flat spring of thick steel wire with circular turns-loops. Scrapers perpendicular to plane of roof are fixed to turns-loops at sides of spring at its lengthy sides. Scrapers at side of roof edge are equipped with bent "П"-shaped knives, which round edge of roof cornice. Drive mechanism represents a short and long sections of rope. Short section of rope connects one of spring ends to fastening pin installed on roof. Long section of rope is fixed to other end of spring and is inserted into bracket installed on roof. Long section of rope may hang down from building roof to earth. Free hanging end of rope is wound onto coil. At both ends of spring there are plates-wind exciters installed in planes that are vertical and orthogonal to each other. Installation areas are provided at the spring bottom for rolling bearings along roof surface.
EFFECT: improved efficiency, expansion of functional capabilities and simplified operation.
2 dwg
