Device for securing stock rails in railway switches

E - Fixed Constructions – 01 – B

Patent

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Details

E01B 7/22 (2006.01) E01B 7/02 (2006.01)

Patent

CA 2223297

Disclosed is a device for securing a stock rail in a railway switch, the device comprising a bearing plate for receiving a foot portion of a stock rail, a slide-chair portion of a blade of a railway switch, the slide-chair portion being provided with a tunnel-shaped recess. The device also comprises a spring element positioned within the recess, the spring element including a first free end resting on the foot portion of the stock rail, and a second free end having a projection which rests on the bearing plate at a location spaced from the foot portion. The spring element also includes a central region located intermediate the free ends and having a cross-section which is tapered in the direction of the free ends, the cross- section of the central region having a height greater than a cross-sectional height of the second free end of the spring adjacent the projection and having a still greater height than a cross-sectional height of the first free end of the spring element resting on the foot portion. The device further comprises a clamping wedge inserted within the recess between the slide-chair portion of the switch blade and the spring element, for securing the stock rail on the bearing plate.

L'invention concerne un dispositif servant à fixer des contre-aiguilles dans des aiguilles, qui comporte une plaque d'assise (2) pour la contre-aiguille (1), un coussinet de glissement (3) pour la lame d'aiguille et un élément faisant ressort (6) allongé, destiné à maintenir le patin de rail (1) en place. L'élément faisant ressort (6) peut être inséré dans une cavité (5) en forme de tunnel du coussinet de glissement (3), à une tension insuffisante pour maintenir le patin de rail (1) en place ou sans tension, et peut être tendu contre le patin de rail (1) et la plaque d'assise (2) à l'aide d'un coin de serrage (10) isolé qui s'étend transversalement à l'élément faisant ressort (6). Ce dernier (6) présente une section transversale qui varie sur sa longueur et s'amenuise à partir d'une zone médiane dans laquelle il coopère avec le coin transversal (10), jusqu'aux deux extrémités libres, et qui, au niveau de son extrémité libre (9) faisant face au patin de rail (1), fait saillie en direction de la plaque d'assise (2).

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