RAIL FASTENING DEVICE Russian patent published in 2002 - IPC

FIELD: railway transport; permanent way. SUBSTANCE: proposed fastening device includes, in additional to vignoles rail, railway bed with integrated slot in which rail is installed, base section and two side sections made of electric insulating elastomer material, and envelope of tension bar to keep width of gauge. Base section has flanges which completely or partially enclose rail foot. Base section has several channels of rhombic cross-section passing length wise the rail. Cross-section of channels in both extreme areas of base section is smaller than cross-section of channels in its middle areas to increase rigidly of base section in outward direction. Invention is aimed at creating device for fastening rails with provision of springing up to 1.5 mm at operation of municipal transport, reducing possibility of side turning over of rail, providing movability of tension bar for keeping width of gauge, reducing current leaks and corrosion under voltage. EFFECT: improved fastening device. 13 cl, 1 dwg