Rail Fastening System

Abstract

Rail fastening system for fastening at least one rail (2) to a rail substrate, preferably a solid travel path, which comprises: a rail support plate (1) arranged for holding the rail (2), wherein the rail (2) in the mounted state is in contact with the rail support plate and is fastened thereto by a rail mount (1a, 1b, 1c); a base plate (3) arranged for fastening the rail support plate (1) on the rail substrate, wherein the rail support plate (1) in the mounted state is fastened on the base plate (3) by way of one or more, preferably two, retaining elements (6) and the base plate (3) is in contact with the rail substrate; wherein the base plate (3) is of multi-part, preferably two-part, construction so that this is adjustable to different dimensions of the rail support plate (1).

Claims

1. A rail fastening system for fastening at least one rail (2) to a rail substrate, comprising: a rail support plate (1) arranged for holding the rail (2), wherein the rail (2) is in contact with the rail support plate and is fastened thereto by a rail mount (1a, 1b, 1c); and a base plate (3) arranged for fastening the rail support plate (1) on the rail substrate, wherein the rail support plate (1) is fastened on the base plate (3) by one or more retaining elements (6) and the base plate (3) is in contact with the rail substrate, wherein the base plate (3) is of multi-part construction and thereby adjustable to different dimensions of the rail support plate (1).

2. The rail fastening system according to claim 1, further comprising at least one intermediate plate (4) of a flexible material, wherein the intermediate plate (4) is arranged between the base plate (3) and the rail support plate (1).

3. The rail fastening system according to claim 2, wherein the at least one intermediate plate (4) of a flexible material has a static stiffness of 200 kN/mm or less.

4. The rail fastening system according to claim 1, further comprising at least one spacer plate (5) which is arranged between the base plate (3) and the rail support plate (1), wherein the spacer plate (5) is of multi-part construction and thereby adjustable to different dimensions of the rail support plate (1).

5. The rail fastening system according to claim 1, wherein the retaining elements (6) each comprise one or more tightening clamps (7) arranged so as to press the rail support plate (1) with a defined force onto the base plate (3).

6. The rail fastening system according to claim 5, wherein the retaining elements (6) each comprise an angle guide plate (8) arranged for defined fixing of an orientation and a position as well as for supporting an associated tightening clamp (7).

7. The rail fastening system according to claim 6, wherein the angle guide plates (8) are of T-shaped construction so that a projection thereof engages in a corresponding recess at an end face of the rail support plate (1), whereby contacting end faces of the rail support plate (1) and the angle guide plates (8) enter into an interlocking connection.

8. The rail fastening system according to claim 1, wherein the retaining elements (6) are so arranged that they are positioned in a transverse direction respectively in flush abutting contact with an end face of the rail support plate (1), and wherein contacting end faces of the rail support plate (1) and the retaining elements (6) are so arranged that they enter into an interlocking connection.

9. The rail fastening system according to claim 1, wherein the retaining elements (6) each comprise a peg (10) and a screw-shaped fastening element (9) anchored by the peg (10) in the rail substrate.

10. The rail fastening system according to claim 9, wherein the retaining elements (6) are so arranged that (10) when the base plate (3) is mounted can be turned from above out of the rail substrate.

11. The rail fastening system according to claim 1, wherein the base plate (3) has at two end sections in transverse direction substitute shoulders (3e) arranged to stabilize the rail support plate (1) in transverse direction.

12. The rail fastening system according to claim 1, wherein an underside (3d) of the base plate (3) comprises a structure of elevations and depressions arranged to indent with the rail substrate.

13. The rail fastening system according to claim 12, wherein the structure of elevations and depressions is a chamber structure.

14. The rail fastening system according to claim 1, wherein the rail substrate is a solid travel path.

15. The rail fastening system according to claim 1, wherein the rail support plate is fastened on the base plate (3) by two retaining elements.

16. The rail fastening system according to claim 1, wherein the base plate (3) is of two-part construction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a perspective exploded view showing a rail fastening system and a rail to be fastened by that to a solid travel path.

[0024] FIG. 2 is a schematic cross-sectional view of the rail fastening system.

[0025] FIG. 3 shows the rail fastening system, obliquely from below, in the mounted state.

DETAILED DESCRIPTION

[0026] Preferred embodiments are described in the following on the basis of the figures. In that case the same, similar or equivalent elements are provided in the figures with identical reference numerals and repeated description of these elements is partly dispensed with so as to avoid redundancies.

[0027] The rail fastening system, illustrated in FIGS. 1 to 3, comprises a rail support plate 1 for holding a rail 2 to be mounted thereon. The rail support plate 1 is, for example, a shaped part of steel.

[0028] In the present embodiment, the rail 2 is located in the region of points. For this reason, a further rail section 2 is shown in FIGS. 1 to 3. The rail section 2 rests on a corresponding section of the rail support plate 1 and is adjustable in transverse direction (the lefthand direction/righthand direction in the illustration of FIG. 2). It may be mentioned that the rail fastening system is also usable apart from points, i.e. in the normal track region. The exact form of the rail support plate 1 can in that case be adapted to the respective use environment.

[0029] The rail support plate 1 has a rail holding section 1a which determines the position of the rail 2 on the rail support plate and contributes to holding the rail 2. The rail 2 is additionally tightened by one or more rail tightening clamps 1b and/or rail clamping yokes 1c against the rail support plate 1. The rail holding section 1a, the rail tightening clamps 1b and the rail clamping yokes 1c form an exemplifying realization for a rail mount equipped for fastening the rail 2 to the rail support plate 1.

[0030] An intermediate plate 4, which is part of the rail fastening system, of a flexible material can be arranged between the rail support plate 1 and a base plate 3 (described in detail further below). The intermediate plate is, for example, a highly resilient plate of an elastomer and preferably has a static stiffness of approximately 200 kN/mm or less. The intermediate plate 4 guarantees optimum mounting of the rail support plate 1 and serves for shock and sound decoupling between the rail 2 and a rail substrate, which is not shown in FIGS. 1 to 3.

[0031] In addition, the rail fastening system can comprise a spacer plate 5, which is disposed below the intermediate plate 4, to provide compensation for possible height tolerances of the rail substrate. The spacer plate 5 can be made from a metal or a plastics material. According to the present embodiment the spacer plate 5 is similarly of two-part construction, with a first spacer plate section 5a and a second spacer plate section 5b.

[0032] The rail fastening system further comprises a base plate 3, to which the rail support plate 1, the optional intermediate plate 4 and the optional spacer plate 5 are fastened. The base plate 3 ensures connection of the rail fastening system with the rail substrate. In the present example the base plate 3 has at the two end sections in transverse direction substitute shoulders 3e arranged to stabilize the rail support plate 1 in transverse direction.

[0033] The base plate 3 is of multi-part construction, in the present embodiment two-part construction, with a first base plate section 3a and a second base plate section 3b. In this way the base plate 3 can be adapted to different rail support plates 1, for example in the blade, intermediate-rail and frog region of points.

[0034] The rail support plate 1 is fixed in its position on the base plate 3 by way of two retaining elements 6. A respective one of the retaining elements 6 (more precisely, the angle guide plates 8 thereof described further below) is positioned on each side in transverse direction to be flushly abutting in front of an end face of the rail support plate 1. The contacting end faces of the rail support plate 1 and the retaining element 6 can have co-operating shapes (projections, depressions, etc.) so as to realize a mechanically positive connection. In this way, longitudinal migration of the rail support plate 1 is precluded. The retaining elements 6 and/or the rail support plate 1 can have different or further means for mechanically positive and/or frictional connection so as to ensure secure mounting of the rail support plate on the base plate 3.

[0035] The retaining elements 6 each comprise a respective tightening clamp 7, which clamps engage over the ends of the rail support plate 1 and urge this by a defined force against the base plate 3. The rail support plate 1 is held in height direction in this way. The tightening clamps 7 are constructed with an optimum clamping force and a high vertical fatigue limit, wherein the exact shape, material strength and spring constant can vary depending on the respective use.

[0036] The retaining elements 6 each further comprise a respective angle guide plate 8, the undersides of the plates being formed as defined pressure surfaces 8a for support on the base plate 3. The angle guide plates 8 are preferably of T-shaped construction so as to realize the above-mentioned mechanically positive mounting of the retaining elements 6. The angle guide plates 8 serve for defined guidance and support of the tightening clamps 7.

[0037] The angle guide plates 8 each have a passage opening 8b which is penetrated by a fastening element 9. The fastening element 9 in the present embodiment is constructed as a screw, which is anchored by way of a peg 10 in the rail substrate. The spacer plate 5 as well as the base plate 3 for this purpose similarly have passage openings 5c, 3c so that all components of the rail fastening system can be not only tightened relative to one another by tightening the screw-shaped fastening elements, but also fastened to the rail substrate.

[0038] In the present embodiment the angle guide plate 8 is in direct contact with the rail support plate 1. Alternatively, the angle guide plate 8 can be inserted into a frame (not shown) provided for that purpose, for example in order to be able to in this way equip the rail fastening system in modular manner with different types of angle guide plates 8.

[0039] The underside 3d of the base plate is, as evident from FIG. 3, preferably of chamber-like construction, whereby this indents with the rail substrate. In this way, wheel forces which occur can be conducted away into the rail substrate with particular reliability.

[0040] The above-mentioned rail fastening system is particularly suitable for mounting on a solid travel path constructed from concrete, in which case the pegs 10 are embedded in the concrete and at any time after installation can be rotated upwardly out of the base plate 3 without demounting this and can be exchanged. All components are thus exchangeable in simple manner.

[0041] While the present invention has been described with reference to exemplary embodiments, it will be readily apparent to those skilled in the art that the invention is not limited to the disclosed or illustrated embodiments but, on the contrary, is intended to cover numerous other modifications, substitutions, variations and broad equivalent arrangements that are included within the spirit and scope of the following claims.

REFERENCE NUMERAL LIST

[0042] 1 rail support plate [0043] 1a rail holding section [0044] 1b rail tightening clamp [0045] 1c rail clamping yoke [0046] 2 rail [0047] 2 rail section [0048] 3 base plate [0049] 3a first base plate section [0050] 3b second base plate section [0051] 3c passage opening [0052] 3d underside [0053] 3e substitute shoulder [0054] 4 intermediate plate [0055] 5 spacer plate [0056] 5a first spacer plate section [0057] 5b second spacer plate section [0058] 5c passage opening [0059] 6 retaining element [0060] 7 tightening clamp [0061] 8 angle guide plate [0062] 8a pressure surface [0063] 8b passage opening [0064] 9 fastening element [0065] 10 peg