Schwihag Ag

Erik Danneberg

Roland Buda

Stefan Lienhard

Daniel Walter

Frank Meyer

Tilman Peter Ruetzel

Michael König

The invention relates to a rail attachment system () for attaching a rail () to a concrete support slab () or a concrete sleeper () or to a steel structure comprising an intermediate plate (), a rail attachment plate () with angle guide plates () arranged thereon, at least two first tensioning clamps () for clamping the rail foot () to the rail attachment plate () as well as screws () and/or ankle bolts () and at least two second tensioning clamps for screwing the rail attachment system () to the underlying surface, characterized in that an elastic intermediate layer () is arranged between the rail () and the rail attachment plate (), and the intermediate plate () is composed of a highly elastic material and/or comprises a steel plate (), at least two second tensioning clamps () for clamping the rail attachment plate () to the substructure, preferably via the intermediate plate (), wherein the first and second tensioning clamps () are embodied in a highly elastic fashion with a high tensioning force, are provided, and at least one upper sliding plate () is arranged between the rail foot () and a first tensioning clamp (), and at least one lower sliding plate () is arranged between the rail foot () and the elastic intermediate layer () and is attached by means of a steel support () in the case of a steel substructure.

Rail attachment system for junction areas

Rail-fastening system for the non-positive resilient fastening of a rail () on a sleeper () of a railway track installation, comprising at least one angle guide plate (), which can be fixed to the sleeper () with at least one screw (), and at least one clamp (), characterized in that the bending radii of the clamp arms () of the clamp () preferably lie in the range from 18-70 mm, wherein the ratio of mutually adjacent bending radii within each clamping arm is &#x2266;1.9 and the ratio of the greatest to the smallest bending radius thereof is &#x2266;3.8, and in that the ratio of weight to width of the angle guide plate is &#x3c;1.3 g/mm, preferably about 1.25 g/mm.

Rail-fastening system

The invention relates to a plastic screw plug () for attaching a rail to a sleeper, in particular concrete sleeper, having an essentially cylindrical plug body which has at the head end a stem region () which preferably adjoins a plug crown () toward the bottom, and in the continuation of which stem region () has an outer thread () with which it can be turned out of or into the sleeper, and is provided with an inner thread () underneath the stem region () in order to receive a sleeper screw. The intention is to improve such a plastic screw plug, in particular, with regard to its operating properties such as uniform application of force into the sleeper, simpler mounting and replaceability, reduction of the risk of fracturing, and additionally to permit it to be used in a variable way. For this purpose, the stem region () has on the inside, in the junction with the inner thread (), a shoulder () which reduces the internal diameter over part of the length of the stem region () and extends in a spiral shape over at least part of the circumference.

Growing community of inventors

Taegerwilen, Switzerland

Erik Danneberg