Spring element for rail vehicles
A spring element, elastic technology, applied in the field of "laminated spring"
Active Publication Date: 2007-01-31
CONTITECH LUFTFEDERSYST
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Problems solved by technology
The result of these two forces is a relative movement between the rubber and the base, and thus friction and wear of the rubber
Method used
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[0017] The spring element 2 shown in the figure is a so-called "leaf spring", which can be used both as a separate support spring and as an additional spring in combination with a pneumatic spring for supporting the bodywork of a rail vehicle.
[0018] The spring element 2 is essentially formed by an elastic spring body 4 . It is fixed between two rigid end members 6 , 8 arranged at a variable distance from each other.
[0019] The spring body 4 has a rotationally symmetrical cross section. Longitudinal section (Figure 2 and Figure 4 ) represents a generally biconvex surface line. Owing to the cavity 10 overall a U-shaped longitudinal section results.
[0020] The spring body 4 is made of rubber or an elastic material with comparable elasticity.
[0021] Of the rigid end elements 6 , 8 , the "upper" element 6 is designed as a disc and the "lower" element 8 is designed as a ring. That is to say, the "lower" end piece 8 has a hole 8a in the middle, whereby the cavity 10 pr...
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Abstract
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.
Description
[0001] The invention relates to a spring element according to the preamble of claim 1, in particular a so-called "leaf spring" which can be used in rail vehicles alone or in combination with an additional spring and a pneumatic spring. Background technique [0002] Patent document DE 35 09 923 C2 discloses a spring element or spring for a vehicle suspension. The main features of this spring element are explained in the opening paragraphs of the following detailed description. [0003] The outer contour of the rubber body of the known spring element is smooth. The bearing surface of the rubber body is made smaller and larger by means of constantly changing vertical forces. The rubber body rolls on the base by the additionally introduced horizontal force. The result of these two forces is a relative movement between the rubber and the seat, and thus friction and wear of the rubber. Contents of the invention [0004] The spring elements disclosed in the above prior art will ...
Claims
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IPC IPC(8): F16F1/376F16F1/44F16F1/374
CPCF16F2230/02F16F1/376F16F1/44F16F1/374A61P31/04F16F1/36
Inventor G·福尔克A·克罗普夫F·霍普曼
Owner CONTITECH LUFTFEDERSYST