Fastening system for fastening a rail

Abstract

A fastening system for fastening a rail for rolling stocks such as trains, including a base plate, an elastic material and a rigid casing, wherein the base plate is embedded in the elastic material and the elastic material is arranged, at least partially, between the base plate and the rigid casing.

Claims

1. A fastening system for fastening a rail for rolling stocks, comprising a base plate, an elastic material comprising at least two zones including a first zone that is at or closer to an inner side of the fastening system, and a second zone that is at or closer to an outer side of the fastening system, the first zone having a lower e-modulus than the second zone, and a rigid casing, wherein: the base plate is embedded in the elastic material, and the elastic material is arranged, at least partially, between the base plate and the rigid casing.

2. The fastening system of claim 1, wherein the rigid casing comprises at least one of: a rigid bottom surface, a first rigid frame part encasing a first edge portion of the base plate, and a second frame part encasing a second edge portion of the base plate.

3. The fastening system of claim 1, wherein the elastic material comprises at least one of: an elastic bottom surface, a first elastic frame part encasing a first edge portion of the base plate, and a second elastic frame part encasing a second edge portion of the base plate.

4. The fastening system of claim 1, wherein the elastic material covers at least one of: a lower surface of the base plate, one or two longitudinal edges of the base plate, one or more portions of one or two transversal edges of the base plate, and one or two portions of an upper surface of the base plate.

5. The fastening system of claim 1, wherein the rigid casing covers at least one of: a lower surface of the base plate, one or two longitudinal edges of the base plate, one or more portions of one or two transversal edges of the base plate, and one or two portions of an upper surface of the base plate.

6. The fastening system of claim 1, wherein the rigid casing covers at least one of: a lower surface of the elastic material, one or two longitudinal edges of the elastic material, one or more portions of one or two transversal edges of the elastic material, and one or two portions of an upper surface of the elastic material.

7. A fastening and support system for fastening and supporting a rail for rolling stocks, comprising the fastening system of claim 1 and a support structure.

8. The fastening and support system of claim 7, wherein the rigid casing is glued onto a surface of the support structure and/or the rigid casing is embedded in the support structure.

9. The fastening and support system of claim 7, wherein the fastening system is fixed to the support structure via at least one anchoring device.

10. A method of producing the fastening and support system according to claim 7, the method comprising: embedding the base plate in the elastic material and arranging the elastic material, at least partially, between the base plate and the rigid casing, and connecting the fastening system to the support structure.

11. A method of producing a rail system comprising: performing the method according to claim 10, and arranging at least one rail on the fastening system.

12. A method for fastening and supporting a rail for rolling stocks, the method comprising: fastening and supporting the rail for rolling stocks with the fastening and support system according to claim 7.

13. A rail system comprising the fastening system according to claim 1, and at least one rail.

14. The rail system according to claim 13, wherein the rail system comprises the support structure.

15. A method of producing the fastening system according to claim 1, the method comprising: embedding the base plate in the elastic material and arranging the elastic material, at least partially, between the base plate and the rigid casing.

16. A method for fastening a rail for rolling stocks, the method comprising: fastening the rail for rolling stocks with the fastening system of claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following, preferred embodiments of the present invention are described with reference to the drawings. These show:

(2) FIG. 1 A schematic cross-section of a rail system according to the invention;

(3) FIG. 2 An upper view of the rail system of FIG. 1;

(4) FIG. 3 A cross-section of an alternative embodiment of a rail system;

(5) FIG. 4 A cross-section of a further alternative embodiment of the rail system.

(6) FIG. 5 A cross-section of an embodiment of the fastening system.

DETAILED DESCRIPTION OF THE EMBODIMENT

(7) FIG. 1 shows a rail system comprising a rail 10 fastened via a fastening system 11 to a support structure 12. The fastening system 11 comprises a base plate 13 (preferably of steel), an elastic material 14 (preferably based on polyurethane) and a solid casing 15 (preferably of steel). The solid casing 15 comprises a bottom plate 16 and a first rigid frame part 17 and a second rigid frame part 18. In the (transversal) cross-section of FIG. 1, first and second rigid frame part 17, 18 have an L-shape with one leg 19 perpendicular to the bottom plate 16 and one leg 20 in parallel to the bottom plate 16 and extending inwardly (in the direction of rail 10). A first edge portion 21 adjacent to a first edge 22 of the base plate 13 is encased by the first rigid frame part 17. In particular, the first edge 22, an upper surface 23 and a lower surface 24 face the first frame part 17 or the bottom plate 16, respectively. Moreover, (see FIG. 2) transversal edge portions 25a and 25b face the first rigid frame part 17 (or second rigid frame part 18, respectively).

(8) Altogether, the first rigid frame part 17 comprises three walls 26a, 26b and 26c (having a rectangle between each other) and a cover wall 27. The second rigid frame part and the corresponding portions of the base plate and the elastic material may be structured as the first rigid frame part (mirrored).

(9) Between the base plate 13 and the solid casing 15, the elastic material 14 is provided. The elastic material 14 contacts the (inner) surfaces of the solid casing 15 facing the base plate 13. Moreover, the elastic material 14 contacts the portions of the base plate 13 facing the solid casing 15. As a result, the outer surface of the elastic material 14 corresponds with the inner surface of the solid casing 15.

(10) In the cross-section of FIG. 1 (transversal cross-section), the bottom plate 16 may have extensions 28 (on both sides) which extend beyond the first and second rigid frame part 17, 18, respectively. Moreover (see FIG. 2), the bottom plate 16 comprises extensions 29 which extend (in the longitudinal direction) beyond the first and second rigid frame part 17, 18, respectively. The bottom plate 16 (see FIG. 2) may have the form of a parallelogram (optionally with two cuts in two corners). Alternatively (which is indicated by the dotted lines), the bottom plate 16 may have the shape of a rectangle (again, optionally, with cuts in two corners). Between the rail and the base plate (see FIG. 1) a pad 30 can be provided. The rail 10 is connected with the base plate 13 via anchors 31, 32. Moreover, the rail 10 may be inclined (slightly) towards an inner (gauge) side 33.

(11) In the embodiment of FIGS. 1 and 2, the solid casing 15 is connected with a support structure 12 via anchor devices 34 (which may comprise anchor screws).

(12) In the embodiment of FIG. 3, the fastening system 11 and rail 10 of FIGS. 1 and 2 is shown. In contrast to the embodiment of FIGS. 1 and 2, the fastening system is not connected via anchor devices to the support structure 12 (which may be, however 14, the case) but embedded in the support structure 12 (being preferably of concrete).

(13) FIG. 4 shows the fastening system 11 and rail 10 of FIGS. 1, 2 and 3. In the embodiment of FIG. 4, the fastening system 11 (namely the solid casing 15) is glued onto the support structure 12 via an adhesive 36.

(14) In all embodiments, the elastic material 14 may comprise different zones 37a, 37b having a different e-modulus. In particular, the (in the figures white) zone 37b may have a lower e-modulus than the (in the figures black) zone 37a. Thereby, a non-linear support can be provided. Both portions 37a, 37b may extend over at least 25% of a bottom surface 38 of the elastic material 14. In the embodiments, the zone 37b is larger than the zone 37a (which is optional).

(15) FIG. 5 shows a cross-section of an embodiment of the fastening system. This embodiment corresponds with the embodiments of FIGS. 1 to 4 except for an additional sealing material 40 at vertical sides 39. This embodiment is preferably embedded within concrete in order to seal a vertical connection of the fastening system and the concrete (against moisture; approx. 18′000 N/mm2 (Compressive) (According to ASTM D695-96) Tolerance of parameters +/−20%). The material 40 forms preferably an epoxy grouting system.

REFERENCE SIGNS

(16) 10 Rail 11 Fastening system 12 Support structure 13 Base plate 14 Elastic material 15 Solid casing 16 Bottom plate 17 First rigid frame part 18 Second rigid frame part 19 Leg 20 Leg 21 First edge portion 22 First edge 23 Upper surface 24 Lower surface 25a Transversal edge portion 25b Transversal edge portion 26a Wall 26b Wall 26c Wall 27 Cover wall 28 Extension 29 Extension 30 Pad 31 Anchor 32 Anchor 33 Inner side 34 Anchor device 36 Adhesive 37a Zone 37b Zone 38 Bottom surface 39 Vertical side 40 Sealing material