US 6,471,139 B1Granted

Rail arrangement

AssigneePhoenix Aktiengesellschaft

InventorsMichael Bruder, Michail Rabkin, Karl-Heinz Krause, Edgar Böhm, Gerhard Merkmann, Peter Schwob, Klaus Tübel

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Abstract

The invention relates to a rail arrangement for a rail superstucture such as a fixed railroad, comprising an elastic intermediate plate (3) which is located between the rail foot and a hard support (6) in the form of a concrete tie and has two through holes for the screws (7) to fasten the rails. For series mounting, which is the solution of choice, the elastic intermediate plate (3) is combined with an elastic intermediate layer (1) in such a way that the additional intermediate layer rests above the intermediate plate directly below the rail foot, whereby the intermediate layer (1) is separated from the intermediate plate (3) by a metal base plate (2) which serves to fasten the rail. According to the invention, the intermediate plate (3) consists of a single-piece vulcanisate made of a rubber mixture and has three structural zones related to a novel arrangement of protrusions (active surfaces) and recesses (inactive surfaces), whereby the inactive surfaces in the central zone are deeper than those in the two side zones. The invention also relates to other constructional features of the elastic intermediate plate (3).

Claims31

Dependent claims

An elastic intermediate plate positioned between a rail base and a hard support of a rail track having a plurality of rails, which comprises:

a single-piece vulcanized material produced from a rubber mixture selected from the group consisting of natural rubber (NR), epoxidized natural rubber (ENR), isoprene rubber (IR), butadiene rubber (BR), acrylate rubber (ACM), styrene-butadiene rubber (SBR), and mixtures thereof, said rubber mixture containing mixing ingredients selected from the group consisting of fillers, plasticizers, and anti-aging agents;
said elastic intermediate plate having a substantially planar top side, and a bottom side having a surrounding edge and a plurality of protrusions and recesses formed on a surface of said bottom side within the surrounding edge;
said bottom side having a center zone and two side zones, each of said side zones having an identical arrangement of said protrusions and recesses with respect to the other and a different arrangement of said protrusions and recesses with respect to the center zone, the center zone having greater rubber-elastic deformability than the two side zones;
said recesses forming inactive surfaces disposed at a substantially constant depth within each zone, the inactive surfaces within the center zone being disposed deeper than the inactive surfaces within the two side zones;
said protrusions forming active surfaces within each zone, the active surfaces of the protrusions within the center zone having a smaller overall surface area than the protrusions in each side zone;
and
each side zone having a larger surface area than the center zone.

4 more elements

A series mounting assembly comprising an elastic intermediate plate positioned between a rail base and a hard support of a rail track having a plurality of rails, a metal base plate for fastening the rail track, and an elastic intermediate layer positioned above said elastic intermediate plate directly below the rail base and separated from said elastic intermediate plate by said base plate, said elastic intermediate plate comprising:

a single-piece vulcanized material produced from a rubber mixture selected from the group consisting of natural rubber (NR), epoxidized natural rubber (ENR), isoprene rubber (IR), butadiene rubber (BR), acrylate rubber (ACM), styrene-butadiene rubber (SBR), and mixtures thereof, said rubber mixture containing mixing ingredients selected from the group consisting of fillers, plasticizers, and anti-aging agents;
said elastic intermediate plate having a substantially planar top side, and a bottom side having a surrounding edge and a plurality of protrusions and recesses formed on a surface of said bottom side within the surrounding edge;
said bottom side having a center zone and two side zones, each of said side zones having an identical arrangement of said protrusions and recesses with respect to the other and a different arrangement of said protrusions and recesses with respect to the center zone, the center zone having greater rubber-elastic deformability than the two side zones;
said recesses forming inactive surfaces disposed at a substantially constant depth within each zone, the inactive surfaces within the center zone being disposed deeper than the inactive surfaces within the two side zones;
said protrusions forming active surfaces within each zone, the active surfaces of the protrusions within the center zone having a smaller overall surface area than the protrusions in each side zone;
and each side zone having a larger surface area than the center zone.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/445,840Filed 14 Dec 1999
Priority: DE 197 25 63818 Jun 1997
Granted: 29 Oct 2002
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

E01B 9/681
Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair: characterised by the material
E01B 9/62
Fastening rails on sleepers, or the like: rail fastenings incorporating resilient supports
E01B 9/68
Fastening rails on sleepers, or the like: pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
E01B 9/683
Characterised by the material: layered or composite