| 摘要 |
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.
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