CLAMP-AND-BOLT FASTENING FOR RAILS Russian patent published in 1998 - IPC

FIELD: railway construction and repair technology. SUBSTANCE: this relates to construction of jointless railway track based on reinforced concrete sleepers and novel fastening. Clamp-and-bolt fastening incorporates rail installed on liner in recess of reinforced concrete sleeper which is made with lateral incline. Liner is secured on reinforced concrete sleeper by means of embedded bolts. Rail foot is pressed against liner by clamps and clamp bolts. Placed between sleeper and liner is over-sleeper interlayer made of rubber, and placed between rail and liner in liner recess is under-rail interlayer also made of rubber. Under-rail interlayer is made with through-holes which are connected by lateral grooves over lower side which faces interlayer. Number of through-holes in under-rail interlayer is increased from center to periphery of interlayer in lateral direction and can be varied. Made in sides of under-rail interlayer are longitudinal grooves going in surface which faces rail and also in surface which faces liner, and they are interconnected by vertical passages. This arrangement gives improved design of rail fastening. EFFECT: higher efficiency. 2 cl, 4 dwg