Rail clip

摘要

A rail clip for fastening railway rails to rail ties. The clip consists of U-shaped member formed from metal plate having a base with a free end and the other end curving upwards with an internal radius of 18 mm or less and a short straight section followed by a second curve and two tapered arms extending therefrom or beyond the curve, said base adapted to be secured to said tie outwardly spaced from the foot of said rail, said arms being bent downwards in a third curve beyond said base and finally the tip portion of said arms being bent backwards in a forth curve toward and short of said base to form toes which are orientated for contact with the top surface of the rail base such that said arms and toes are deflected upwards relative to said rail to develop downward clamping forces at the said toes which hold the said rail on the said tie to restrain longitudinal, lateral and vertical movement; after the said clip is formed it is hardened and tempered and then cold set by loading it in the same manner as occurs in track but the applied load is increased until the yield is passed and the clip is permanently deformed, the load is then removed & the process is repeated at least once.

主权项

1. A rail clip configured to hold down a rail to a rail tie, the rail clip comprising a base section formed from a metal plate, the base section having a first end which is free and a second end followed by a first curved section which curves upwards from the base section and has an internal radius of curvature of up to 18 mm, the first curved section followed by a short straight section, which is followed by a second curved section, the second curved section consisting of two tapered arms extending from one of the first curved section or the short straight section, the base section configured to be secured to a rail toe outwardly spaced from a foot of the rail, each tapered arm extending beyond the first end of the base section and being bent downwards in a third curved section, then bent back toward and short of the base section in a fourth curved section to form a toe, the toe of each tapered arm oriented for contact with a top surface of a rail base of the rail, wherein the rail clip is subjected to a cold setting process after being heat treated, thereby improving resistance to damage during fitting.