EP2672007B1 - Guide plate for fixing rails for rail vehicles - Google Patents

Description

The invention relates to a guide plate for the attachment of rails for rail vehicles.

In addition to a guide plate of the type in question here, a system for fastening rails usually comprises at least one spring element and a clamping element for bracing the spring element against the respective substrate on which an attachment point for the respective rail is to be formed by means of the system.

In the assembly position, the guide plate is located with a contact surface, which is formed on a longitudinal side of the guide plate, laterally on the foot of the rail to be fastened.

The substrate on which the guide plate is mounted is typically a threshold made, for example, of concrete, wood or other suitable material. On the ground in one embodiment, a support shoulder is present, which may be made by a corresponding shape of the substrate or by an additional element. At the Supporting shoulder is supported in the assembled system, the guide plate with a support surface which is provided on the longitudinal side of the guide plate, which is opposite to the provided with the contact surface longitudinal side. Alternatively, the guide plate can be held firmly by a separate fastener to the respective substrate.

In practical use, the guide plate fulfills a dual function. On the one hand, it guides the rail sideways and ensures its correct longitudinal alignment. In this case, when the platform is mounted in the track, it diverts the lateral forces that occur when the supported rail is passed over in the respective attachment point into the ground. On the other hand, a spring element is supported and guided on the guide plates when the rail fastening system is completely assembled. This spring element exerts an elastic hold-down force by which the rail is held pressed against the respective ground.

In the case that the guide plate is designed as a so-called "angled guide plate", a paragraph extending in the longitudinal direction of the guide plate is formed on the respective substrate on the underside of the guide plate, which sits positively in the mounting position in a correspondingly shaped recess of the substrate. In this way, in addition to the support on the respective support shoulder, the position of the guide plate is additionally secured transversely to the longitudinal extent of the rail.

In order to clamp the arranged on the guide plate spring against the ground, is usually formed from the top to the bottom leading through hole in the guide plate. Through this passage opening the clamping element required for clamping the respective spring element is inserted, which is coupled to the rail supporting the substrate. As a rule, serves as a clamping element, a screw or a bolt, which are screwed into a dowel inserted into the ground. So that the spring element is held securely in the respectively prescribed position even under the forces acting in the fully assembled state, form elements, such as projections or depressions, may be formed on the upper side of the guide plate, in or on which the spring element is supported with one section each.

The spring element used to hold down the rail typically has a fastening portion and at least one arm portion extending from the fastening portion, which, when fully assembled, presses with its free end onto the rail.

Examples of guide plates of the type discussed above and fastening systems or rail attachment points formed using such guide plates are shown in FIGS DE 102 54 679 B4 , of the DE 41 01 198 C1 , of the DE 20 2004 020 816 U1 , of the WO 2011/110454 A1 or the DE 20 2009 004 399 U1 represented and used in practice in a large number of variants.

Guide plates of the type described above are usually made of highly durable plastics. In order to be able to endure the loads acting on them in practical use, older designs would generally be solid. The recently emerging demand for a weight reduction could be met by recesses have been formed in the guide plate at a suitable location. So are in the in the DE 102 54 670 B4 described guide plate in the areas that are needed neither for supporting the spring element nor for discharging passing on the guide plate liquid, formed both from the top and from the bottom recesses in the angled guide plate. The shape of the recesses and the shape and orientation of the remaining between them wall portions of the guide plate are chosen so that on the one hand ensures a high dimensional stability of the guide plate and on the other hand a significant weight reduction is achieved.

In addition to its supporting and guiding function, a guide plate of the type in question is also intended to ensure a good electrical insulation of the components mounted on it and coming into contact with them against the ground. To meet this requirement, for example, in the WO 2011/110454 A1 has been proposed to surround the passage opening of the guide plate with a circumferential collar. The collar prevents in the manner of a protective dam penetration of water into the opening. At the same time the collar can be used with appropriate shaping of the spring element as a guide for the spring element.

Although the guide plates formed in the above-described manner have optimized performance characteristics with reduced weight, in practice, the object has been to provide a high-load guide plate with further reduced weight.

This object has been achieved by a guide plate having the features specified in claim 1.

Advantageous embodiments of the invention are specified in the dependent claims and are explained below as the general inventive concept in detail.

A guide plate according to the invention for the attachment of rails for rail vehicles has, in accordance with the above-described prior art at least one of the underside, on which the guide plate is in mounting position forth in the guide plate molded recess, formed on the top of the guide plate support surface for a provided for holding down the rail to be fastened spring element, and formed on an end face of the guide plate bearing surface which extends in the longitudinal direction of the guide plate and on which the rail to be fastened is guided laterally in the assembled position.

According to the invention, at least one reinforcing rib which rises above the supporting surface and extends transversely to the contact surface is formed on the upper side of the guide plate. At the same time, the recess formed in the guide plate from the underside extends into the region of the guide plate in which the reinforcing rib is formed.

A guide plate according to the invention has on its provided with the support surface for each supported on the guide plate spring element top at least one rib, which increases the stiffness of the guide plate in the manner of a stiffening rib or vault rib. This allows the recess molded into the guide plate from the bottom to also expand into the volume area of the guide plate over which the reinforcing rib extends. Since a small wall thickness is sufficient for the stiffening effect of the reinforcing rib, in this way the reinforcing rib itself can be formed largely hollowed out. Overall, it is possible to further reduce the material volume of the guide plate and, consequently, its weight, without having to accept losses in terms of load capacity and other mechanical properties.

Depending on the configuration of the adjacent shape elements of the guide plate, the shape of the portion of the guide plate engaging in the area swept by the reinforcing rib corresponds to the portion of the recess formed in the guide plate. He optimally follows the shape of the reinforcing rib in her Longitudinal and transverse directions such that the reinforcing rib is hollow except for the wall thickness required to form its side walls and its roof.

A guide plate according to the invention can be used in the same way as the above-explained, known from the prior art guide plates. Accordingly, a guide plate according to the invention also typically has a through opening leading from the top to the underside of the guide plate, through which a clamping element provided for tensioning the spring element can be inserted. In order to prevent in this way, based on the prior art, that water or other liquids reaching the guide plate penetrate into the passage opening, the mouth of the passage opening assigned at least in sections to the support surface can, as in the prior art, rise above the support surface Circling collar. This can also serve as a guide for a portion of a correspondingly shaped, to be mounted on the guide plate spring element. An optimal stiffening and at the same time manufacture technically easy to design a guide plate according to the invention results in this context, when the reinforcing rib is connected to the collar. The connection of the reinforcing rib to the collar can be formed continuously, so that there is an optimum flow of force and causes the collar as a continuation of the reinforcing rib stiffening of the guide plate over its entire width.

In addition to the already mentioned, a barrier against the penetration of liquid into the through hole forming collar can be formed in a conventional manner to the support surface of the guide plate further form elements for guiding the spring element. These shaped elements may be, for example, stops on which in each case a portion of the spring element abuts in the assembly position, or a groove in which the spring element sits in the assembled position with another section. Also, it may be in the relevant form elements to a concavity shallow depth, by which a pre-assembly is defined in which the spring element is held pre-assembled under slight bias until the rail is set to its intended position and the spring element are pushed into its final position can.

In the support surface of the guide plate two extending in the longitudinal direction of the guide plate grooves may be formed, in which the spring element is supported in the assembled position, each with at least one section. The grooves can be arranged so that they are separated from each other by the present invention formed on the top of the guide plate reinforcing rib. The reinforcing rib can thus extend over the entire width of the guide plate despite the grooves and exert their reinforcing function. With a corresponding shaping of the spring element, the reinforcing rib can additionally serve as a guide or support for the respective section seated in the groove in the mounting position. To make sure that there are no bigger ones Accumulate amounts of liquid in the region of the grooves, the grooves may at least partially fall in the direction of their end facing away from the reinforcing rib end. In this way, liquid entering the grooves may laterally exit the grooves.

Of course, if this is expedient, for example, from a production point of view or for static reasons, two or more recesses may be formed from the bottom in the guide plate. Adjacent recesses may be limited by webs, which are arranged in the manner of a truss and thus have optimum capacity with minimized material volume.

In the event that the respective recess extends over a large volume of the guide plate, it may also be expedient, for example, to form at least one vault rib on the roof covering the respective recess to the top of the guide plate, which also acts as a stiffener. It is also possible to mold recesses into the guide plate from the top in order to save material. Alternatively, it is also conceivable for the same purpose to introduce breakthroughs that lead from the top to bottom of the guide plate. The respective apertures may be designed such that they open in the recess formed from the underside into the guide plate.

A guide plate according to the invention typically has an elongated, cuboid basic shape, whose in Mounting position aligned parallel to the rail to be fastened longitudinal sides are longer than their transversely arranged narrow sides.

The protection of the guide plate according to the invention against impending liquid, especially water, which collects in the rain in the vicinity of the guide plate, and thus their insulating effect can be increased, that the guide plate in a conventional manner laterally from her protruding projections, whose Bottom of the guide plate associated surfaces form a continuation of the formed on the underside of the guide plate contact surface with which the guide plate is in the mounting position on the respective ground.

The projections may extend along the narrow sides and along the longitudinal side of the guide plate, which lies opposite the contact surface. On the respective longitudinal side can also be formed in a likewise known manner, a support surface with which the guide plate is supported in the mounting position on a shoulder of the substrate on which the guide plate is mounted. The projections may be formed in the manner of thin lobes, which lie in the mounting position close to the top of the substrate. For this purpose, it is sufficient if the thickness of the projections have only a small fraction of the main body of the guide plate to which they are integrally formed.

The inventive design of a guide plate is particularly suitable for this purpose, made of a plastic to be manufactured. Thus, the reinforcing rib provided according to the invention can be easily manufactured in a conventional manufacturing process from plastics, which are already used today for the production of guide plates.

The advantages of the invention have the same effect in conventional, provided for mounting on a flat surface guide plates as well as designed in the form of angled guide plates guide plates, for their assembly on the respective underground a depression must be provided in which the associated angle section of the guide plates sits positively in mounting position.

Fig. 1

einen Befestigungspunkt für eine Schiene in einer seitlichen teilgeschnittenen Ansicht;

Fig. 2

eine Spannklemme in perspektivischer Ansicht;

Fig. 3

eine in dem System gemäß Fig. 1 eingesetzte Führungsplatte in einer perspektivischen Ansicht von oben;

Fig. 4

die Führungsplatten in einer perspektivischen Ansicht von unten.

The invention will be explained in more detail by means of exemplary embodiments. Each show schematically:

Fig. 1

an attachment point for a rail in a side partially sectioned view;

Fig. 2

a tension clamp in perspective view;

Fig. 3

one in the system according to Fig. 1 inserted guide plate in a perspective view from above;

Fig. 4

the guide plates in a perspective view from below.

In the in Fig. 1 illustrated fastening point B is a rail S on a here only partially shown, cast concrete concrete threshold U attached, which forms a solid, the rail S supporting ground. In the transverse to the longitudinal extent of the rail S arranged threshold U is formed in a conventional manner, a flat contact surface U1, which is bounded on its narrow sides by a respective shoulder U2, U3. In the region of the transition from the contact surface U1 to the respective shoulder U2, U3, a groove-like depression U4, U5 is formed in the threshold U, which extends over the width of the threshold U measured in the longitudinal direction of the rail S to be fastened and when fully assembled Fixing point B is aligned parallel to the rail S.

The attachment point B is formed from a system for fastening the rail S, the two clamping elements 1, 2 serving as spring elements, two guide plates 3, 2 clamping screws 5, 6 required as tensioning means for tensioning the respective tensioning clamp 1, 2 and a shim 7 includes.

As in Fig. 2 illustrated by the clamp 1, the identically shaped clamps 1.2 are formed in a conventional manner W-shaped and each have a middle loop 1a, the legs 1b, 1c at one end via a semicircle spanning arc 1d are interconnected and at its other end in each case in an outwardly directed torsion 1e, 1f pass, to which in each case an upwardly curved spring arm 1g, 1h followed. The spring arms 1g, 1h each go into an end portion 1i, 1j, which points in the direction of the middle loop 1a, that the ends of the end portions 1i, 1j are directed against each other. With its end portions 1i, 1j, the tension clamp presses on its associated side of the foot F of the rail S when fully assembled.

In each case one of the clamping clamps 1,2, one of the guide plates 3,4 and one of the clamping screws 5,6 are arranged on one of the longitudinal sides of the rail S, while the shim 7 is located between the guide plates 3,4 and on the contact surface U1 of the threshold U is located. On the shim 7 is the rail S with her foot F.

The guide plates 3,4 are here formed in the manner of angled guide plates and have on their the threshold U associated underside extending over its measured in the longitudinal direction of the rail S width extending paragraph, in each case in the assembly position befindliches guide plate 3 in the associated, corresponding shaped depression U4, U5 of the threshold U sits. In addition, the guide plates 3, 4 in the assembly position are each supported by a support surface 8 formed on their longitudinal side facing away from the rail S on the associated shoulder U2, U3 of the threshold U. At its opposite, the rail foot F associated, an end face of the guide plate 3 performing longitudinal side, the guide plates 3.4 each have a contact surface 9 against which the rail foot F is supported with its longitudinal edge. From the rail S when driving over a not shown here Rail vehicle resulting transverse forces Q are so picked up by the guide plates 3,4 and discharged into the threshold U.

The identical design of the guide plates 3.4 is the example of the in the Figures 3 and 4 illustrated guide plate 3 explained.

In the guide plate 3 is formed from its top 10 to the opposite, the contact surface U1 of the threshold U associated bottom 11 leading formed as a slot through hole 12 formed, based on the length L of the guide plate 3.4 centered and in the direction of the Contact surface 9 provided longitudinal side of the guide plate 3.4 is arranged offset. Through the through hole 12, the associated clamping screw 5 is inserted during assembly of the attachment point B for clamping the arranged on the guide plate 3 clamp 1, which is then screwed into a recessed into the threshold U, not visible here dowel.

At the top 10 of the guide plate 3, a support surface 13 is formed, on which the associated tension clamp 1 is supported in the mounting position. The support surface 13 is not flat, but has various form elements that serve for guiding and supporting the tension clamp 1. These include two in the direction of the bearing surface 9 provided with the longitudinal side of the guide plate 3 rising and adjacent to this longitudinal side contact surfaces 14,15, each of which seen in the longitudinal direction laterally on each side of the Through opening 12 is arranged. In addition, two stops 16, 17 are provided on the support surface 13, one of which is assigned to the contact surfaces 14, 15. The stops 16,17 together with the contact surfaces 14,15 a seat in which the end portions 1i, 1j of the tension clamp 1 are provisionally held in a preassembly until they after positioning the rail S to the finished assembly on the contact surfaces 14,15 be pushed onto the foot F of the rail S.

Furthermore, a collar 18 that runs around the mouth of the passage opening 12 is formed on the support surface 13. This collar 18 prevents on the one hand, that liquids that reach the support surface 13, penetrate into the through hole 12. The collar 18 in this case has a thin-walled elevation 18a, which serves to additionally protect the internal thread of the respective tightening screw 5, 6 lying below the level of the supporting surface 13 in mounting position against dirt and at the same time to increase the electrical resistance. On the other hand, the collar 18 serves in its elevated, provided with the contact surface 9 longitudinal side of the guide plate 3 area as a guide for the bow 1d of the tension clamp. 1

In addition, two grooves 19,20 are formed in the support surface 13, which are arranged in the longitudinal direction in alignment with each other and adjacent to the longitudinal surface provided with the support surface 8 and parallel to this. In this case, the grooves 19,20 each terminate at their associated narrow side 3a, 3b of the guide plate 3. At the same time they are in the direction of their respective narrow side 3a, 3b sloping sloping each associated end, so that in the grooves reaching liquid, such as water, runs laterally over the narrow sides of the grooves 19,20.

By a reinforcing rib 21, which is aligned with respect to the length L centered on the support surface 13 and extending in the width direction of the guide plate 3 transversely to the provided with the support surface 8 and the abutment surface 9 longitudinal sides of the guide plate 3, the grooves 19,20 from each other separated. Starting from the provided with the support surface 8 longitudinal side of the guide plate 3, the reinforcing rib 21 runs on the collar 18 surrounding the mouth of the through hole 12. In this case, the width of the reinforcing rib 21 in the direction of the collar 18 decreases steadily until it merges with its side surfaces 22,23 in a rounding in the respective associated peripheral surface 24,25 of the collar 18. The collar 18 thus forms a continuation of the reinforcing rib 21 and complements the stiffening effect of the reinforcing rib 21 in the region of the edge of the guide plate 3 surrounding the through-opening 12.

At the narrow sides 3a, 3b and provided with the support surface 8 longitudinal side of the guide plate 3 tab-like projections 26,27,28 are formed, which protrude laterally from the guide plate 3 and hang in the mounting position on the guide plate 3 surrounding portions of the threshold U. In this way, the shield of the top of the guide plate 3 is raised against at or on the threshold U pending water. The thickness D 'of the projections 26-28 is a maximum of one Tenth of the thickness D "of the main body 29 of the guide plate. 3

From its underside 11 forth in the guide plate 3, a larger number of recesses 30,31,32,33,34 are formed. The one recess 30 is formed in the region in the guide plate 3, in which on the top 10, the reinforcing rib 21 is formed. The shape of the recess 30 associated with the reinforcing rib 21 is adapted to the shape of the reinforcing rib 21. Accordingly, the recess 30, starting from its broad, associated with the support surface 8 longitudinal edge associated in the direction of the passage opening 12 until between the recess 30 and the through hole 12, only a thin web 35 is present. In this way, the reinforcing rib 21 is hollowed out on its side 11 associated with the bottom side except for a thin wall thickness.

The other recesses 31-34 are arranged mirror-symmetrically to the center of the guide plate 3 viewed in the longitudinal direction. In this case, adjacent recesses 31-34 are separated from each other by webs, which are each aligned in the manner of truss braces so that the guide plate 3 has a high rigidity even in its provided with the recesses 31-34 area.

By the reinforcing rib 21 and the molded-in recess 30 thus the condition is created that the identically shaped guide plates 3,4 with minimal material volume and accordingly minimum weight can be produced and at the same time the requirements placed on the capacity of such guide plates 3,4 are reliably met.

The decrease in rigidity resulting from the material savings has been compensated by the reinforcing rib 21, which greatly increases the area moment of inertia in the central area of the respective guide plate 3, 4 provided with the reinforcing rib 21. In this way, the guide plates 3,4 are stiffened and achieve a generally greater load capacity. In order to guide the power flow around the through hole 12 formed as a slot, the widened collar 18 is pulled around the slot, which merges fluently into the reinforcing rib 21. For plastic-friendly design contributes that the reinforcing rib 21 is hollowed out from the bottom 11 and in the region of the reinforcing rib 21 is ensured a constant wall thickness.

REFERENCE NUMBERS

B

attachment point

D '

Thickness of the protrusions 26-28

D "

Thickness of the main body 29

F

Foot of the rail S

L

Length of the guide plate 3

Q

transverse forces

S

rail

U

threshold

U1

Riot area of the threshold U

U2, U3

Shoulders of the threshold U

U4, U5

Depressions of the threshold U

1a

Middle loop of the tension clamp 1

1b, 1c

Leg of the middle loop 1a

1d

Arch of middle loop 1a

1e, 1f

Torsion sections of the tension clamp 1

1g, 1h

Spring arm of the tension clamp 1

1i, 1y

End sections of the tension clamp 1

1, 2

Clamps (spring element)

3, 4

guide plates

3a, 3b

Narrow sides of the guide plate 3

5, 6

turnbuckles

7

shim

8th

support surface

9

contact surface

10

Top of the guide plate 3

11

Bottom of the guide plate 3

12

Through opening of the guide plate. 3

13

Support surface of the guide plate 3

14, 15

Contact surfaces of the guide plate 3

16, 17

Attacks of the guide plate 3

18

Collar of the guide plate 3

18a

Increase of the collar 18

19, 20

Grooving the guide plate 3

21

Rib of the guide plate 3

22, 23

Side surfaces of the reinforcing rib 21

24, 25

Peripheral surfaces of the collar 18

26, 27, 28

projections

29

main body

30-34

recesses

35

web

Claims (12)

1. Guide plate for the attachment of rails (S) for rail vehicles,

   - with at least one recess (30-24) moulded into it from the underside (11) on which the guide plate (3) stands in the assembly position,

   - with a support surface (13) constructed on the upper side (10) of the guide plate (3) for a spring element (1, 2) envisaged for holding down the rail (S) to be attached, and

   - with a contact surface (9) provided on one face of the guide plate (3) which extends in the longitudinal direction of the guide plate (3) and on which contact surface (9) the rail (S) to be attached is, in the assembly position, guided laterally ,

   characterised in that on the upper side (10) of the guide plate (3), at least one reinforcing rib (21) is provided which rises above the support surface (13) and extends crosswise to the contact surface (9) and that the recess (30) moulded into the guide plate (3) from the underside (11) extends into the area of the guide plate (3) in which the reinforcing rib is provided (21).
2. Guide plate according to Claim 1, characterised in that it has an aperture (12) that leads from the upper side (10) to the underside (11) of the guide plate (3) through which a tensioning element (5,6) envisaged for the tensioning of the spring element (1,2) can be pushed through, that the 'mouth' of the aperture (12) assigned to the support surface (13) is, at least in sections, encircled by a collar (18) that rises above the support surface (13), and that the reinforcing rib (21) is connected to the collar (18).
3. Guide plate according to any one of the preceding claims, characterised in that on the support surface (13) shaped elements are provided for the guiding of the spring element (1,2).
4. Guide plate according to Claim 2 and 3, characterised in that a section of the collar (18) is constructed in such a way as to guide a loop (1a) of the spring element (1,2) that encircles the section in the assembly position.
5. Guide plate according to any one of Claims 3 or 4, characterised in that two grooves (19,20) are moulded into the support surface (13) which extend in the longitudinal direction of the guide plate (3) and in which at least one section (1e, 1f) of the spring element (1,2) is supported in the assembly position and that the grooves (19,20) are separated from one another through the reinforcing rib (21).
6. Guide plate according to Claim 5, characterised in that the grooves (19,20) slope away, at least in sections, in the direction of their end which is facing away from the reinforcing rib (21).
7. Guide plate according to any one of the preceding claims, characterised in that more than two recesses (30-34) are moulded into the guide plate (3) from the underside (11).
8. Guide plate according to Claim 7 characterised in that adjacently positioned recesses (30-34) are limited by crosspieces (35) which are arranged in the manner of a truss.
9. Guide plate according to any one of the preceding claims, characterised in that it has projections (26-28) sticking out from it to the side whose surfaces assigned to the underside (11) of the guide plate (3) form a continuation of the contact area (U1) formed on the underside (11) of the guide plate (3) with which the guide plate (3) stands, in the assembly position, on the particular base.
10. Guide plate according to any one of the preceding claims, characterised in that the projections (26-28) extend along the narrow sides (3a,3b) and along the long side of the guide plate (3) which is opposite to the contact surface (13).
11. Guide plate according to Claim 9 or 10, characterised in that the projections (26-28) have a smaller thickness (D') than the main body (29) of the guide plate (3).
12. Guide plate according to any one of the preceding claims, characterised in that it is made from a plastic.

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