Rail fastening system

Abstract

A rail-mounting assembly (S) for fastening a rail (3) to a fixed substrate (5) with an intermediate construction (2) between the rail (3) and the fixed substrate (5) that operatively connects the rail (3) to the fixed substrate (5) in an elastic manner, and the intermediate construction (2) comprises only a elastic intermediate layer element (1; 101) that has a variable elasticity distribution across its cross-section (6) in the direction (7A) of its longitudinal extension (8) and/or in the direction (7B) transverse to its longitudinal extension (8).

Claims

1. A rail-mounting assembly for fastening a rail to a fixed substrate including polyvalent sleepers, the assembly being between the rail and the fixed substrate operatively connected to the fixed substrate in an elastic manner, and comprising a single elastic intermediate layer element having a variable elasticity distribution across its cross-section in the direction of its longitudinal extension and/or in the direction transverse to its longitudinal extension; and a hard intermediate element having a trapezoidal part and lying between the elastic intermediate layer element and the fixed substrate.

2. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element bears directly against a lower face of the rail.

3. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element has an elastically deformable inner region that is completely spaced from edges of the elastic intermediate layer element, and the spacing from the edges is smaller than 30 mm.

4. The rail-mounting assembly according to claim 3, wherein the elastic intermediate layer element has an outer region that completely surrounds the elastically deformable inner region and that is less elastic than the elastically deformable inner region.

5. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element has an elastically deformable inner region that is concentric to a center point of the elastic intermediate layer element.

6. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element has a circular, elliptical or oval elastic inner region that is more elastically deformable than a less elastically deformable outer region surrounding the circular, elliptical or oval elastic inner region.

7. The rail-mounting assembly according to claim 6, wherein the elastically deformable inner region is thinner than an adjacent less elastically deformable outer region of the elastic intermediate layer element.

8. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element is made from microcellular rubber or polyurethane.

9. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element has an elongated notch on each of two of its edges.

10. The rail-mounting assembly according to claim 9, wherein the elongated notch extends in a direction of a long side edge of the elastic intermediate layer element.

11. The rail-mounting assembly according to claim 1, wherein the elastic intermediate layer element has two projecting teeth on each of two of its edges.

12. The rail-mounting assembly according to claim 1, wherein the hard intermediate layer element is fixed to the fixed substrate by lateral angle guide plates.

13. The rail-mounting assembly according to claim 1, wherein the trapezoidal part of the hard intermediate layer element extends toward the fixed substrate.

14. The rail-mounting assembly according to claim 1, wherein the trapezoidal part is below the rail.

15. The rail-mounting assembly according to claim 1, wherein the trapezoidal part is tubular.

16. A rail-mounting assembly for fastening a rail to a fixed substrate including polyvalent sleepers, the assembly being between the rail and the fixed substrate operatively connected to the fixed substrate in an elastic manner, and comprising a single elastic intermediate layer element having a variable elasticity distribution across its cross-section in the direction of its longitudinal extension and/or in the direction transverse to its longitudinal extension; and a hard intermediate element having a trapezoidal part and lying between the elastic intermediate layer element and the fixed substrate, the trapezoidal part is formed by a plurality of cross ribs reinforced by a central web part.

17. A rail-mounting assembly for fastening a rail to a fixed substrate including polyvalent sleepers, the assembly being between the rail and the fixed substrate operatively connected to the fixed substrate in an elastic manner, and comprising: a single elastic intermediate layer element having a variable elasticity distribution across its cross-section in the direction of its longitudinal extension and/or in the direction transverse to its longitudinal extension; and a hard intermediate element having a tubular trapezoidal part and lying between the elastic intermediate layer element and the fixed substrate, the tubular trapezoidal part a two-part cavity that is spatially divided by a transverse inner web.

18. A rail-mounting assembly for fastening a rail to a fixed substrate including polyvalent sleepers, the assembly being between the rail and the fixed substrate operatively connected to the fixed substrate in an elastic manner, and comprising: a single elastic intermediate layer element having a variable elasticity distribution across its cross-section in the direction of its longitudinal extension and/or in the direction transverse to its longitudinal extension; and a hard intermediate element having a trapezoidal part, lying between the elastic intermediate layer element and the fixed substrate, and having an elongated notch on each of two of its edges.

19. The rail-mounting assembly according to claim 18, wherein each elongated notch extends in the direction of longitudinal extension of the hard intermediate layer element.

20. A rail-mounting assembly for fastening a rail to a fixed substrate including polyvalent sleepers, the assembly being between the rail and the fixed substrate operatively connected to the fixed substrate in an elastic manner, and comprising a single elastic intermediate layer element having a variable elasticity distribution across its cross-section in the direction of its longitudinal extension and/or in the direction transverse to its longitudinal extension; and a hard intermediate element having a trapezoidal part, lying between the elastic intermediate layer element and the fixed substrate, and having two projecting teeth on each of two of its edges.

21. The rail-mounting assembly according to claim 20, further comprising: an angle guide plate that has two recesses on an end of the plate for receiving the teeth.

22. The rail-mounting assembly according to claim 21, wherein the two recesses are both on a long side of the angle guide plate.

23. The rail-mounting assembly according to claim 21, wherein the two recesses are both at corners of the angle guide plate.

24. The rail-mounting assembly according to claim 21, wherein the recesses only extend partially through a thickness of the angle guide plate.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) Further features, effects and advantages of the present invention will be described in more detail with reference to the attached drawings, in which exemplary components of an inventive rail-mounting assembly are represented and described.

(2) Components in the individual figures that at least substantially correspond with respect to their function may hereby be identified by the same reference characters, and the components need not be numbered and described in all figures.

(3) FIG. 1A is a schematic top view of a elastic intermediate layer element of a rail-mounting assembly having an elasticity distribution that varies across the cross-section;

(4) FIG. 1B is a schematic cross section through the intermediate layer element from FIG. 1A along section line A-A;

(5) FIG. 1C is a schematic perspective top view of the single elastic intermediate element of FIGS. 1A and 1B;

(6) FIG. 1D is a schematic perspective bottom view of the intermediate layer element of FIGS. 1A to 1C;

(7) FIG. 2A is a schematic perspective top view of a hard trapezoidal intermediate layer element of a rail-mounting assembly having a trapezoidal part;

(8) FIG. 2B is a schematic top view of the hard trapezoidal intermediate layer element of FIG. 2A;

(9) FIG. 2C is a schematic longitudinal side view of the hard trapezoidal intermediate layer element of FIGS. 2A and 2B;

(10) FIG. 2D is a schematic transverse view of the hard trapezoidal intermediate layer element of FIGS. 2A to 2C;

(11) FIG. 3A is a schematic perspective top view of an alternative hard trapezoidal intermediate layer element of a rail-mounting assembly having a trapezoidal part;

(12) FIG. 3B is a schematic top view of the alternative hard trapezoidal intermediate layer element of FIG. 3A;

(13) FIG. 3C is a schematic longitudinal side view of the alternative hard trapezoidal intermediate layer element of FIGS. 3A and 3B;

(14) FIG. 4A is a schematic perspective top view of a further alternative hard trapezoidal intermediate layer element of a rail-mounting assembly having a tubular part of trapezoidal section;

(15) FIG. 4B is a schematic longitudinal view of the further alternative trapezoidal intermediate layer element of FIG. 4A;

(16) FIG. 4C is a schematic transversely sectioned detail view of the tubular part of trapezoidal section of the further alternative hard trapezoidal intermediate layer element of FIGS. 4A and 4B;

(17) FIG. 4D is a schematic longitudinally sectioned detail view of the tubular part of trapezoidal section of the further alternative hard trapezoidal intermediate layer element of FIGS. 4A to 4C;

(18) FIG. 5A is a schematic bottom view of an angle guide plate of a rail-mounting assembly having two recesses for receiving projecting teeth on at least two plate ends;

(19) FIG. 5B is a schematic longitudinal view of the angle guide plate of FIG. 5A;

(20) FIG. 5C is a schematic top view of the angle guide plate of FIGS. 5A and 5B;

(21) FIG. 5D is a schematic transverse view of the angle guide plate of FIGS. 5A to 5C; and

(22) FIG. 6 is a schematic top view of an example of a rail-mounting assembly.

SPECIFIC DESCRIPTION OF THE INVENTION

(23) The first possible single intermediate layer element 1 shown in FIGS. 1A to 1D may be the single elastic intermediate element 1 of an intermediate construction 2 of an exemplary rail-mounting assembly S (see FIG. 6) for fastening a rail 3 to a concrete sleeper 4 of a fixed substrate 5 of an unillustrated track bed in which the intermediate layer element 1, viewed across its cross-section 6 (see also FIG. 1B), has a variable elasticity distribution both in the longitudinal direction 7A of its longitudinal extension 8 and in the transverse direction 7B transverse to its longitudinal extension 8 (transverse extension).

(24) This intermediate layer element 1 sits directly under a foot 9 of the rail 3 and thus to a lower face 10 of the rail 3 (see also FIG. 6).

(25) The elastic intermediate layer element 1 has two zones of different elasticity, specifically a circular inner region 15 and a less elastically deformable outer region 16, and in corresponding embodiments of the intermediate layer element 1, this inner region 15 may alternatively also be elliptical or oval.

(26) The elastic circular inner region 15 extends concentrically about a center point 17 of the intermediate layer element 1 and in the intermediate layer element 1 it is fully offset from the peripheral sides or edges 18, 19, 20, and 21 of the intermediate layer element 1.

(27) As can be seen particularly well in FIGS. 1A and 1C, the less elastically deformable outer region 16 completely surrounds the elastic circular inner region 15.

(28) The elastic circular inner region 15 has a diameter D of 80 mm.

(29) Here, the elastic circular inner region 15 has a minimum spacing from all edges 18 to 21 of 20 mm, in order to ensure a sufficient overall stability of the intermediate layer element 1 for the long term.

(30) The intermediate layer element 1 is thinner in the elastic circular inner region 15 than in the less elastically deformable outer region 16, and at least in the illustrated embodiment the elasticity distribution that varies across the cross-section 6 can be easily structurally created and adjusted.

(31) In the elastic circular inner region 15, the intermediate layer element 1 only has a thickness d of 5.5 mm, whereas in the less elastically deformable outer region 16, it has a thickness or height h of 10 mm.

(32) Furthermore, the intermediate layer element 1 in this embodiment has a body 22 made of ethylene propylene diene rubber, EPDM for short.

(33) The intermediate layer element 1 has a static spring rate of 35 kn/mm, a dynamic spring rate of <45 kN/mm and thus a stiffening factor <1.3 with respect to the relationship between dynamic spring rate and static spring rate.

(34) Further, the intermediate layer element 1 has elongated notches 23 or 24 on its long side edges 18 and 20 whose length (not separately numbered) extends in the direction 7A of the longitudinal extension 8 of the intermediate layer element 1.

(35) Due to these elongated notches 23 and 24, the intermediate layer element 1 has two teeth 25 and 26 or 27 and 28 projecting from each of its long side edges 18 and 20, and the intermediate layer element 1 can be positively interlocked particularly well on its long side edges 18 and 20 with a further component of the rail-mounting assembly S, such as an angle guide plate 90 (see in particular FIGS. 5A to 5D) of the rail-mounting assembly S, for example to improve a flow of forces within the rail-mounting assembly S. The projecting teeth 25 and 26 or 27 and 28 project here past the respective notches 23 and 24.

(36) The intermediate layer element 1 with its elasticity distribution that varies across the cross-section 6 is simply constructed in that the elastic circular inner region 15 is created by a correspondingly large circular recess 30 formed centrally in the intermediate layer element 1. This circular recess 30 is centered on the center point 17 of the intermediate layer element 1.

(37) While the intermediate layer element 1 has this circular recess 30 on its upper face 31, its lower face 32 is completely planar.

(38) Since the intermediate layer element 1 is only about half as thin in the elastic circular inner region 15 due to the circular recess 30 than in the less elastically deformable outer region 16, the variable elasticity distribution of the intermediate layer element 1 in the direction 7 of the longitudinal extension 8 does not change continuously, but rather it changes abruptly at the edge 33 of the circular recess 30.

(39) Through the circular recess 30, not only the elastic circular inner region 15 is created, but also the less elastically deformable outer region 16.

(40) In addition to the intermediate layer element 1, the first possible hard trapezoidal intermediate layer element 40 shown in FIGS. 2A to 2D may be the single further component of the intermediate construction 2 of the rail-mounting assembly S shown by way of example in FIG. 6 for fastening the rail 3 to the concrete sleeper 4 of the fixed substrate 5.

(41) The hard trapezoidal intermediate layer element 40 is characterized in particular by a part 41 of trapezoidal section that is formed complementarily to a groove 42 of trapezoidal section in the concrete sleeper 4 (see for example FIG. 6) and that can be inserted into this trapezoidal groove 42. As a result, the hard trapezoidal intermediate layer element 40 can conduct or transfer forces acting on the rail 4 directly into the fixed substrate 5 or into the concrete sleeper 4 by the intermediate construction 2.

(42) The hard trapezoidal intermediate layer element 40 is between the intermediate layer element 1 and the concrete sleeper 4 of the fixed substrate 5 under the rail 4 (see for example FIG. 6) in such a way that in particular the trapezoidal part 41 can be fitted into the trapezoidal groove 42 under the rail 4. Hence the trapezoidal part 41 is below the rail 4.

(43) The hard trapezoidal intermediate layer element 40 is flat except for the trapezoidal part 41, and has elongated notches 45 and 46 on its two long side edges 43 and 44, and these notches 45 and 46 extend in the direction 47 of the longitudinal extension 48 of the hard trapezoidal intermediate layer element 40.

(44) The hard trapezoidal intermediate layer element 40 has two further projecting teeth 49 and 50 or 51 and 52 on each of its long side edges 43 and 44, and the hard trapezoidal intermediate layer element 40 can also be positively interlocked particularly closely on its long side edges 43 and 44 with a further component of the rail-mounting assembly S, such as an angle guide plate 90 (see in particular FIGS. 5A to 5D) of the rail-mounting assembly S, for example to improve force distribution in the rail-mounting assembly S. The teeth 49 and 50 or 51 and 52 project here past the respective notches 45 or 46.

(45) The trapezoidal part 41 extends in its longitudinal extension direction 54 from a first short side edge 55 to a second short side edge 56 of the hard trapezoidal intermediate layer element 40 and thus also in the direction 47 of the longitudinal extension 48 of the hard trapezoidal intermediate layer element 40 such that the trapezoidal part 41 is set off-center on the hard trapezoidal intermediate layer element, as can be seen particularly well in FIG. 2B.

(46) In this embodiment, the trapezoidal part 41 consists of a plurality of cross ribs 57 (only numbered by way of example) extending transversely of the trapezoidal part longitudinal extension 54, which cross ribs 57 form a trapezoidal passage 59 on of the roughly 3 mm thick flat base body 58 of the trapezoidal part 41 the hard trapezoidal intermediate layer element 40.

(47) The cross ribs 57 extend in a row 60 at a spacing 61 from one another of 3 mm. Here, the cross ribs 57 have legs 62 approximately 5 mm thick that extend from the base body 58 of the hard trapezoidal intermediate layer element 40.

(48) The cross ribs 57 project from approximately 5 mm thick inner ends 62 a total of approximately 18 mm above the flat base body 58, and have a thickness of 3 mm at their respective outer ends 63. Thus narrowly tapering narrowly adjacent cross ribs 57 enclose an angle 64 of 6 with one another.

(49) The cross ribs 57 converge to their outer ends 63 spaced approximately 10 mm apart, and their respective two legs 65 and 66 enclose a flank angle 67 with one another of 60.

(50) In addition to the intermediate layer element 1, the alternative possible hard trapezoidal intermediate layer element 140 shown in FIGS. 3A to 3C may likewise be the single further component of the intermediate construction 2 of the rail-mounting assembly S shown by way of example in FIG. 6 for fastening the rail 3 to the concrete sleeper 4 of the fixed substrate 5.

(51) The alternative hard trapezoidal intermediate layer element 140 has a trapezoidal part 141 that is complementary to a trapezoidal groove 42 present in the concrete sleeper 4 (see for example FIG. 6), so that, also the alternative hard trapezoidal intermediate layer element 140 can conduct or transverse forces acting on the rail 4 directly into the fixed substrate 5 or into the respective concrete sleeper 4 by means of the intermediate construction 2. The hard trapezoidal intermediate layer element 140 is between the intermediate layer element 1 and the concrete sleeper 4 of the fixed substrate 5 under the rail 4 (see for example FIG. 6) in such a way that in particular the trapezoidal part 141 can be placed in a trapezoidal groove 42 located under the rail 4.

(52) With its flat base body 158, the alternative hard trapezoidal intermediate layer element 140 is flat except for the trapezoidal part 141, and has an elongated notch 145 or 146 on each of its two long side edges 143 and 144 that extend in the direction 147 of the longitudinal extension 148 of the hard trapezoidal intermediate layer element 140.

(53) On the two long side edges 143 and 144, the alternative hard trapezoidal intermediate layer element 140 also has two projecting teeth 149 and 150 or 151 and 152. Here, too, the projecting teeth 149 and 150 or 151 and 152 project past the respective notch 145 or 146.

(54) With its trapezoidal longitudinal extension 154, the trapezoidal part 141 extends from a first short side edge 155 to a second short side edge 156 of the alternative hard trapezoidal intermediate layer element 140 and thus also in the direction 147 of the longitudinal extension 148 of the alternative hard trapezoidal intermediate layer element 140.

(55) In this alternative embodiment, the trapezoidal part 141 also consists of a plurality of cross ribs 157 (only numbered by way of example) extending transversely with respect to the trapezoidal part longitudinal extension 154, which cross ribs 57 form a trapezoidal body 59 of the trapezoidal part 159 on the flat base body 58 of the alternative hard trapezoidal intermediate layer element 140.

(56) The cross ribs 157 are next to one another in a row 160 and spaced apart from one another, and the individual cross-rib members 157 are also interconnected by a central web part 170. As a result, the stability of the trapezoidal part 141 is significantly increased.

(57) Except for the central web part 170, the alternative hard trapezoidal intermediate layer element 140 of FIGS. 3A to 3C is identical to the hard trapezoidal intermediate layer element 40 shown in FIGS. 2A to 2D. In this respect, reference is also made to the description thereof.

(58) In addition to the intermediate layer element 1, the further possible hard trapezoidal intermediate layer element 240 shown in FIGS. 4A to 4D may likewise be the single further component of the intermediate construction 2 of the rail-mounting assembly S shown by way of example in FIG. 6 for fastening the rail 3 to the concrete sleeper 4 of the fixed substrate 5.

(59) Except for its trapezoidal part 241, the further hard trapezoidal intermediate layer element 240 is substantially identical to the previously described hard trapezoidal intermediate layer elements 40 (FIGS. 2A to 2D) and 140 (FIGS. 3A to 3C). In this respect, only the differently designed trapezoidal part 241 will be discussed, and reference is made to the above description with respect to the remaining structure of the further hard trapezoidal intermediate layer element 240, in order to avoid repetitions.

(60) The trapezoidal part 241 of the further hard trapezoidal intermediate layer element 240 is characterized by a tubular body 275 that has a two-part cavity 276 subdivided by a stabilizing transverse inner web 277. Because of the tubular body 275, the trapezoidal part 241 is constructed with less material and the further trapezoidal intermediate layer element 240 is correspondingly light. Here, the two hollow chambers 278 and 279 of the two-part cavity 276 are of frustoconical shape and formed by reinforced wall portions 280 (only numbered by way of example), so that the trapezoidal part 241 is very stable in spite of the tubular body 275.

(61) FIGS. 5A to 5D show a first angled guide plate 90 of the rail-mounting assembly S (see FIG. 6) that fastens a rail 3 to a concrete sleeper 4 of the fixed substrate 5 of a track bed (not shown) and that has at one end 91 two recesses 92 and 93, in which the described projecting teeth 25, 26 or 27, 28 and 49, 50 or 51, 52 or 149, 150 or 151, 152 and the corresponding components of the intermediate construction 2 couple with the angle guide plate 90 positively and in particular closely with one another.

(62) Here, the two recesses 92 and 93 are on a long side 94 of the angle guide plate 90 and also in the corners 95 and 96 of the long side 94, so that the projecting teeth 25, 26 or 27, 28 and 49, 50 or 51, 52 or 149 150 or 151, 152 formed complementarily thereto can engage accurately in the respective recesses 92 and 93.

(63) The angle guide plate 90 has a trapezoidal wedge element 97, by means of which it can engage in a further trapezoidal groove 98 (see FIG. 6) of the fixed substrate 5.

(64) The rail-mounting assembly S shown by way of example in FIG. 6 has the present advantageous intermediate construction 2, composed only of an inventive single elastic intermediate element 101 of a hard trapezoidal intermediate layer element 340 inventively comprising a trapezoidal part 341 (see FIGS. 1 to 4).

(65) The hard trapezoidal intermediate layer element 340 is fixed in the trapezoidal groove 42 of the concrete sleeper 4 by means of its trapezoidal part 341, as has previously been described in detail.

(66) This intermediate layer element 101 and this hard trapezoidal intermediate layer element 340 are also positively interlinked with the angle guide plates 190 in the manner described above (see FIG. 5).

(67) Both the rail foot 9 and the respective angle guide plates 190 are hereby clamped against the concrete sleeper 4 by means of a conventional tension clip 11 (only numbered by way of example)

(68) For this purpose, the tension clamp 11 (only numbered by way of example) is held down by a screw 13 (only numbered by way of example) that is screwed into an anchor fitting 12 (only numbered by way of example), introduced in the concrete sleeper 4, with inner and outer threads in a known manner.

(69) At this point, it should be explicitly pointed out that the features of the solution described above or in the claims and/or in the figures may optionally also be combined in order to make use of or achieve the explained features, effects and advantages in a correspondingly cumulative manner.

(70) It is understood that the illustrated embodiments detailed above are merely first embodiments. In this respect, the embodiment of the invention is not limited to these embodiments.