Fifthwheel coupling

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 53/08 (2006.01)

Patent

CA 2324342

Fifthwheel couplings are used to form an articulated connection between a fifthwheel tractor and a semitrailer. They usually have a fifthwheel coupling plate which is fixed on the fifthwheel tractor by bearing elements (5, 10) and which has a V-shaped recess (2) with a central cavity (3) and a lock for receiving and locking in a kingpin which is mounted on the semitrailer in the middle of an upper plate in such a way that it is fixed. The fifthwheel coupling plate also has an anti-attrition sliding layer (4a, b) on the side facing the upper plate. The inventive fifthwheel coupling plate consists of two separate components which can be mechanically interconnected, i.e. an upper bearing component (1a) which interacts with the upper plate and which is provided with the sliding layer (4a, b), and a lower supposing component (1b) on which the central recess (3) is provided with the engaging lock.

Les sellettes servent à relier de manière articulée un tracteur à une remorque. Elles présentent de manière générale une plaque d'accouplement, maintenue par des éléments de palier (5, 10) sur le tracteur et comportant une découpe (2) en V avec un évidement (3) central et une serrure pour loger un maître-tourillon monté fixe sur la remorque, au milieu d'une plaque d'attelage, de manière qu'il soit bloqué. La plaque de la sellette comprend en outre sur le côté qui fait face à la plaque d'attelage, une couche de glissement (4a, b) réduisant le frottement. La plaque de la sellette réalisée selon l'invention comprend deux éléments (1, 1b) séparés interconnectables mécaniquement, comportant une partie supérieure d'appui (1a) qui coopère avec la plaque d'attelage et est munie de la couche de glissement (4a, b), ainsi qu'une partie inférieure support (1b) dans laquelle est pratiquée l'évidement (3) central muni de la serrure à effet bloquant.

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