RAIL FASTENING Russian patent published in 1999 - IPC

FIELD: railway track construction and maintenance. SUBSTANCE: this relates to rail structure of railway track and is used for fastening rails of jointless track to reinforced concrete base. Located at each side of rail foot are thrust members and electrical insulating members with holes. Coaxially to these holes and to respective depth of recess, concreted in underrail part of concrete sleeper are electrical insulating dowels with threaded fasteners which clamp middle part of spring grip to thrust members. Ends of spring grips which are W-shaped in plan interact with rail foot, and through supporting loops they interact with thrust members. Thrust and electrical insulating members are made in the form of angles. Horizontal flange of these angles with holes is located on upper surface of sleeper. Other flange of these angles interact with inclined wall of recess made in sleeper. Surface of thrust member is coated with layer of material which possesses properties of electric insulation and adhesion to metal and concrete. Angles located at each side of rail are connected to each other with creation of single underrail member of trough shape. This member also functions as adjusting liner. Aforesaid embodiment of rail fastening prolongs its service life. EFFECT: higher efficiency. 4 cl, 4 dwg