Fastening rail in railway slide chair assembly

Details Fastening rail in railway slide chair assembly Fastening rail in railway slide chair assembly

E - Fixed Constructions

01

B

E01B 9/54 (2006.01) E01B 9/58 (2006.01)

Patent

CA 2570006

A rail fastening apparatus for fastening an inner stock rail (2) in a railway slide chair assembly comprises a baseplate (100) having on one face thereof a rail seat region (110) on which the inner stock rail (2) sits when the slide chair assembly is in use, a resilient rail fastening clip (7) for restraining such an inner stock rail (2), the clip (7) comprising an elongate member having at one end a toe portion (71) for bearing on the rail (2) and at its other end a heel portion (72), first locating means (101) for locating the rail fastening clip (7) in the apparatus in a first position, which means (101) comprise a first abutment surface (101a), positioned on the baseplate (100) in a second region (120) spaced from the rail seat region (110), against which surface the heel portion (72) of the clip (7) abuts when the apparatus is in use to inhibit withdrawal of the clip (7) from the rail (2), and loading means (9) for vertically deflecting the clip (7) so as to produce a load in the toe portion (71). The loading means (9) comprise a ramp (9) provided adjacent to the rail seat region (110), whereby the clip (7) can be installed in the apparatus by hammer-driving the heel portion (72) of 25 the clip (7) towards the rail seat region (110) until the toe portion (71) slides up the ramp (9) onto the rail (2) and the heel portion (72) comes into contact with the first abutment surface (101a). Second locating means (102) are provided for locating the rail fastening clip (7) in the apparatus in a second position, different from the first, into which the clip can be driven such that the toe portion of the clip sits on the ramp (9) in a pre-load condition in which the clip does not bear on the rail.

L'invention porte sur un dispositif de fixation du rail de contre-aiguille (2) intérieur dans un coussinet de glissement, comportant: (i) une plaque d'assise (100) présentant une face d'appui (110) sur laquelle repose le rail (2) lorsque le coussinet de glissement est utilisé; (ii) un crapaud élastique (7) de fixation du rail (2), consistant en un élément allongé présentant une pointe (71) portant sur le rail (2) et un talon (72); (iii) un premier moyen (101) de positionnement du crapaud (7) dans une première position, ledit moyen comprenant: (a) une première surface de butée (101a) située sur la plaque d'assise (100) dans une deuxième zone (120) distante de la face d'appui (110) sur laquelle butte le talon (72) du crapaud (7) lorsque le dispositif fonctionne, et empêchant le crapaud (7) de quitter le rail (2); et (b) un moyen de mise en charge (9) défléchissant verticalement le crapaud (7) en produisant une charge sur le talon (71), et comprenant lui-même une rampe (9) jouxtant la face d'appui (110), le crapaud pouvant se monter sur le dispositif en en martelant la pointe (72) vers la face d'appui (110) jusqu'à ce que la pointe monte sur la rampe (9) et que le talon bute sur la surface de butée (101a); et (iv) un deuxième moyen (102) de positionnement du crapaud (7) dans une deuxième position, différente de la première, où le crapaud (7) est amené sur la rampe (9) dans une position de précharge où il ne porte pas sur le rail (2).

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