Spring element for rail vehicles

Details Spring element for rail vehicles Spring element for rail vehicles

F - Mech Eng,Light,Heat,Weapons

16

F

F16F 1/376 (2006.01) F16F 1/44 (2006.01)

Patent

CA 2554521

The invention relates to a spring element (2) consisting essentially of an elastic spring body (4) that is fixed between two rigid end parts (6, 8) arranged at a variable distance from each other. Said spring body (4) consisting of rubber or a rubber-type plastic has a rotationally symmetrical cross-section, the longitudinal section having a biconvex surface line. A U- shaped cross-section is formed as a result of a recess (10). The aim of the invention is to reduce the abrasion caused by the introduction of vertical and horizontal forces and to enable a light, horizontal slide. The surface (12) of the spring body (4) is provided with ribs (14; 14a, ...) that are arranged at a distance (A) from each other and are intersected by ribs (16; 16a, ...) or groups of ribs (16, ...) also arranged at a distance (A) from each other. Polygonal fields (18a, ...) are formed on the surface (12) of the spring body (4), in the gaps between the ribs (14, ...; 16, ...), according to the angle of intersection. Instead of the ribbing, or in addition thereto, the spring body (4) and/or the surface of at least one of the end bodies (6 and/or 8) can be provided with a smooth surface. The ribs (14a, ...; 16a, ...) are preferably approximately 2 mm thick and approximately 10 mm apart. The inventive spring element is especially used as an additional spring combined with a pneumatic spring in rail vehicles.

L'invention concerne un élément ressort (2) essentiellement composé d'un corps ressort élastique (4) fixé entre deux corps terminaux rigides (6, 8) dont l'écart varie. Le corps ressort (4) réalisé en caoutchouc ou dans un matériau de type caoutchouc présente une section transversale à symétrie de rotation, la section longitudinale présentant une ligne de surface biconvexe. En raison d'un évidement (10), la section transversale totale est en forme de U. L'invention vise à réduire l'usure provoquée par des forces verticales et horizontales et à permettre un coulissage horizontal aisé. La surface (12) du corps ressort (4) comporte des nervures (14; 14a, ) disposées à un écart (A), coupées par des nervures (16; 16a, ) ou des groupes de nervures (16, ) également disposées à un écart (A). Sur la surface (12) du corps ressort (4), des champs polygonaux (18a, ) sont formés selon l'angle de coupe dans les interstices entre les nervures (14, ...; 16, ...). A la place ou en plus des nervures, le corps ressort (4) et/ou la surface d'au moins un des corps ressort (6 et/ou 8) peuvent comporter une surface lisse. Les nervures (14a, ...; 16a, ...) présentent de préférence une épaisseur d'environ 2 mm et un écart d'environ 10 mm. L'élément ressort selon l'invention est notamment destiné à être employé en tant que ressort supplémentaire en combinaison avec un ressort pneumatique dans des véhicules sur rails.

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