EP0569867B2 - Rail construction - Google Patents

Abstract

The invention relates to a rail construction consisting of the rail track (1) with fastening means (2), sleepers (3) made of wood, concrete or the like as well as the ballast bed (4), on which the sleepers are mounted. The essential feature of the invention consists in that there is arranged on the underside (8) of the sleepers an elastic base (5) which essentially consists of two layers (6, 7), the layer (6) facing the underside (8) of the sleepers being an elastomeric material, while the layer (7) surrounded by the ballast bed (4) is a fleece material. <IMAGE>

Description

The invention relates to a rail arrangement from a track with fasteners: Sleepers made of wood, concrete or the like; one Ballast bed on which the sleepers are stored: and from one arranged on the underside of the sleepers elastic pad, which is essentially consists of two layers, the bottom of which an elastomeric layer facing the sleepers Material.

Various rail arrangements are known. some of which are presented below.

DE-C-31 47 387 and US-A-4 494 695 described a rail arrangement in which between the rail foot and the base plate made of steel or concrete is an elastic intermediate layer. Also in the area of the rail fastening there are elastic ones Elements arranged.

From EP-B-0 198 158 there is also an elastic one Rail bearings known consisting of a top plate and steel base plate and one between them arranged rubber plate with top and bottom plate through several bolts and arranged on them Rubber rings under variable preload are settable. The rail foot itself is in anchored to the top plate.

A mat is also known from EP-A-0 192 983 elastic material known for ballast bedding, with a layer on the top which is formed from a fleece

Finally, in US-A-4 609 144 a rail assembly presented, for example, the Threshold made of concrete in corresponding recesses the track bed foundation, which is also made of concrete, sits. Between the thresholds and the surrounding Track bed foundation is a sleeper shoe arranged from elastomeric material, the inside grooves (i.e. towards the threshold). Between the bottom the threshold and the threshold shoe floor there is also an elastic insert.

The object of the invention is now to a generic rail arrangement in which the sleepers are stored on a ballast bed. the Reduce structure-borne noise, especially in the frame retrofitting existing lines without a time-consuming gravel removal takes place.

According to the invention, this object is achieved by that the layer surrounded by the ballast bed is a nonwoven and the layer of elastomeric material to the bottom (i.e. to the nonwoven side) with a Reinforcement insert is provided, wherein the layer (6) made of elastomeric material and the layer (7,7 ') made of nonwoven fabric are each flat and in one piece.

Fig. 1

eine Schienenanordnung mit dem zweischichtigen Aufbau der elastischen Unterlage;

Fig. 2

eine Schicht aus elastomerem Werkstoff mit einreihiger Anordnung von Kanälen;

Fig. 3

eine Schicht aus elastomerem Werkstoff mit einreihiger Anordnung von Kanälen und einer Verstärkungseinlage;

Fig. 4

eine Schicht aus elastomerem Werkstoff mit zweireihiger Anordnung von Kanälen;

Fig. 5

eine Schienenanordnung mit dem Zweischichtigen Aufbau der elastischen Unterlage unter gleichzeitiger Bildung eines Schwellenschuhes;

Fig. 6

einen Schichtenaufbau der elastischen Unterlage. bei der die Schicht aus Vliesstoff breiter ist als die Schicht aus elastomerem Werkstoff;

Fig. 7

eine dreidimensionale Darstellung des Schichtenaufbaus gemäß Fig 6;

Fig. 8

ein Schwellenschuh im gefalteten Zustand.

The invention will now be explained on the basis of exemplary embodiments with reference to schematic drawings, in which:

Fig. 1

a rail arrangement with the two-layer structure of the elastic base;

Fig. 2

a layer of elastomeric material with a single row arrangement of channels;

Fig. 3

a layer of elastomeric material with a single row arrangement of channels and a reinforcing insert;

Fig. 4

a layer of elastomeric material with a two-row arrangement of channels;

Fig. 5

a rail arrangement with the two-layer structure of the elastic base while simultaneously forming a sleeper shoe;

Fig. 6

a layer structure of the elastic base. in which the layer of nonwoven is wider than the layer of elastomeric material;

Fig. 7

a three-dimensional representation of the layer structure according to FIG. 6;

Fig. 8

a swell shoe when folded.

Fig. 1 shows a rail arrangement consisting from the rail track (1) with fasteners (2), the sleepers (3), the ballast bed (4) and the elastic Underlay (5). The pad (5) of two layers (6, 7), the underside (8) the threshold facing layer (6) is an elastomer Material (rubber or rubber-like material) is. while the layer surrounded by the ballast bed (4) (7) is a nonwoven (e.g. geotextile). Both layers (6, 7) are each formed flat and in one piece as well as the same width, the width of which is the threshold (3) adapts.

According to FIG. 2, the layer (6) has channels (9). the run in the longitudinal direction of the sleepers and are arranged in a row, the channels here in essentially have a rhombic cross-sectional shape.

Fig. 3 shows essentially the same layer (6) as shown in Fig. 2, but with the difference. that an additional reinforcement insert (10) is present here (embedded), which is to the bottom (i.e. to the Nonwoven side) is arranged.

Fig. 4 now shows a layer (6) with a two-row arrangement of channels (11, 12) with simultaneous formation a lattice structure (i.e. offset principle). The canals have a circular cross-sectional shape here on.

The channels (9, 11, 12) are expediently Figs. 2. 3 and 4 - at the ends of the layer (6), i.e. in the Area of the threshold ends, closed.

The layer (6) made of elastomeric material with a A minimum thickness of 8 mm preferably has one Shore A hardness from 50 to 60 °. The one below Layer (7) of nonwoven has a minimum thickness of 2 mm.

Fig. 5 now shows a rail arrangement with the 1, only with the difference, that here the surrounding of the ballast bed (4) Layer (7 ') of nonwoven fabric as a threshold shoe (17 - Fig. 8) is formed, the formation of the threshold shoe is described in more detail below.

6 there is the elastic pad (5 ') from the layer (6) made of elastomeric material with a 4 and the layer (7 ') made of nonwoven fabric The width b of the layer (7 ') is greater than the width a of the layer (6), which in turn is essentially corresponds to the threshold width.

FIG. 7 now shows the construction principle according to FIG. 6 in three-dimensional representation This clarifies. that the layer (7 ') is also even longer than the layer (6), which is essentially the same length has like the threshold. Folding the side stripes (13. 14 15. 16) in the direction of the arrow is the swell shoe (17) - Fig. 8.

The layer (6) made of elastomeric material expediently with the layer (7, 7 ') made of nonwoven fabric glued. In addition, it can be beneficial. in particular in connection with a rail arrangement according to Fig. 1, the layer (6) with the underside (8) of the Glue thresholds (3) as well.

In the case of threshold shoe training, there is Possibility of nailing on wooden sleepers (Position 18 - Fig 8).

Claims (13)

1. Rail arrangement consisting of

   a length of rail (1) with fastening means (2),

   sleepers (3) made of wood, concrete or the like,

   a ballast bed (4) on which the sleepers are supported,

   and of an elastic underlay (5, 5') which is arranged on the underside (8) of the sleepers and essentially consists of two layers (6, 7, 7'), the layer (6) facing the underside (8) of the sleepers being an elastomer material,

   characterised in that

   the layer (7, 7') surrounded by the ballast bed (4) is a fleece material and the layer (6) of elastomer material is provided with a reinforcing inlay (10) on the underside, i.e. on the fleece side, the layer (6) of elastomer material and the layer (7, 7') of fleece material each being formed in one piece with a flat surface.
2. Rail arrangement according to claim 1, characterised in that the layer (6) of elastomer material exhibits channels (9, 11, 12) which are arranged in one or more rows.
3. Rail arrangement according to claim 2, characterised in that the channels (9, 11, 12) run in lines in the longitudinal direction of the sleepers (3).
4. Rail arrangement according to claim 2 or 3, characterised in that the channels (9, 11, 12) are closed at the ends of the layer (6).
5. Rail arrangement according to one of claims 1 to 4, characterised in that the layer (6) of elastomer material has a Shore A hardness of 50 to 60°.
6. Rail arrangement according to one of claims 1 to 5, characterised in that the layer (6) of elastomer material has a minimum thickness of 8 mm.
7. Rail arrangement according to one of claims 1 to 6, characterised in that the layer (7, 7') of fleece material has a minimum thickness of 2 mm.
8. Rail arrangement according to one of claims 1 to 7, characterised in that the layer (6) of elastomer material essentially has the same breadth as the sleepers (3).
9. Rail arrangement according to claim 8, characterised in that the layer (7) of fleece material essentially has the same breadth as the layer (6).
10. Rail arrangement according to one of claims 1 to 8, characterised in that the breadth b of the layer (7') of fleece material is greater than the breadth a of the layer (6) of elastomer material.
11. Rail arrangement according to claim 10, characterised in that the length of the layer (7') is greater than the length of the layer (6).
12. Rail arrangement according to claim 10 and 11, characterised in that the layer (7') of fleece material is folded forming the strips (13, 14, 15, 16) at the sides (forming a sleeper shoe 17).
13. Rail arrangement according to one of claims 1 to 12, characterised in that the layer (6) of elastomer material is glued to the underside (8) of the sleepers and to the layer (7, 7') of fleece material.

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