Shock absorber component for railway track having pourous rubber particle core enclosed by cover layer

#The invention relates to a shock absorber component in the form of a flatly placeable strip or plate such as (but not exclusively) for use in the support of track structures for railroads. The shock absorber component can be placed, for example, between the superstructure and the roadbed of the track. The shock absorber component comprises a core layer having bonded rubber particles and a cover layer made of flexible material.

#A shock absorber of the kind referred to above is disclosed in German patent publication 2,911,319.

#This known shock absorber component made of elastomeric material is characterized in that the elastomeric material comprises a mixture of compact material held together by a binding agent. The compact material is, for example, rubber or polyurethane with particles of a porous material such as flexible plastic foam or other porous materials such as microcellular rubber pieces.

#The invention will now be described with reference to the drawings wherein:

#FIG. 1 is a vertical section of a shock absorber component arranged between the superstructure and the roadbed of the track of a railroad with the shock absorber component being laid flat as a strip or plate; and,

#FIG. 2 shows a detail II of the shock absorber component of FIG. 1 placed flat as a strip, plate or mat.

#In FIG. 1 of the drawing, a track structure of a railroad is shown in vertical section. The superstructure 2 is supported on a roadbed 1 such as a concrete plate of a bridge or of a tunnel. The superstructure 2, in turn, comprises the ballast 3 and the ties 4 resting therein and the rails 5 of the track 6 which are carried by the ties 4.

#A shock absorber component 7 is mounted between the upper surface of the roadbed 1 and the superstructure 2, namely, below the ballast 3. The shock absorber component is in the form of a flatly placed strip, plate or mat and runs parallel to the longitudinal direction of the track 6 and extends over a width which is at least equal to or preferably somewhat larger than the length of the ties 4.

#Shock-like loads go into the ballast 3 from the rail 6 via the ties 4 and then into the roadbed 1. The shock absorber component 7 has the task to avoid or at least weaken the transmission of shock-like loads so that the resulting effects and damages to the roadbed 1 do not occur.