| 摘要 |
<p>RAILWAY FASTENING ASSEMBLY ?stract of the Disclosure A rail fastening assembly for securing a railway rail to a support therefor, comprising a retaining chair secured to the rail support, such as a tie. The retaining chair includes a head having an inner side and an outer side with a recess formed in the head. An S-shaped torsional spring rail clip having a central leg is received in seating engagement in the recessed head of the retaining chair, with the terminal legs of the clip coacting with respectively a ramp on the retaining chair and a base flange of the railway rail, for establishing a torsional spring force on the central leg of the clip, and securing the railway rail to the support. The recess in the head is disposed on the outer side of the head facing away from the rail. In one embodiment an insulator is disposed intermediate the base flange of the rail and the terminal leg portion of the clip that holds the rail in place, for electrically and mechanically insulating the retaining chair and the rail clip from the rail. In another embodiment the terminal leg of the clip directly engages the rail base flange; an electrical insulating covering may be provided on the retaining device where it is secured to the support for electrically insulating the retaining device from the support. An insulating tie pad is disposed between the base of the rail and the tie in the embodiments illustrated.</p> |
