HIGH-STRENGTH INSULATED RAIL JOINT Russian patent published in 2006 - IPC E01B11/54 

FIELD: railway transport; permanent way.

SUBSTANCE: invention can be used in insulated rail joints with fishplates made of composite material. Proposed insulated rail joint contains fishplates made on composite material arranged at both sides of rails, pressure strips, bolts with nuts. Bolts are provided with oval neck and increased section of part in horizontal plane from neck to thread. Every other hole in paired pressure strips installed asymmetrically relative to rail are made oval to receive bolt necks. Moreover, joint is provided with disk springs arranged between pressure strips and nuts, installed in pairs, one in the other, and heat insulator is fitted in butt joint gap.

EFFECT: reduced clearances between bodies of bolts and holes in rails and fishplates, increased shear strength of joint, no easily breakable members, improved electric insulation, facilitated assembling , provision of higher preliminary tightening of bolts and their constant stressed stage.

5 dwg