EP2643519B1 - Guide plate for laterally guiding a rail and system for attaching a rail - Google Patents

Description

The invention relates to a guide plate for laterally guiding a rail on an abutment, which is formed on a base having a footprint on which the guide plate is in the fully assembled state, wherein the guide plate has a counter-bearing associated support portion with a support surface, with the guide plate in the assembled state is supported on the counter bearing.

Moreover, the invention relates to a system for fastening a rail, in which a guide plate of the type specified above is used.

As explained in the brochure published by the applicant "Rail fastening systems for concrete sleepers - system W 14" guide plates and fastening systems of the type in question are used in the attachment of rails on a solid surface, for example, by a concrete sleeper or a concrete slab can be formed. The rail to be fastened usually stands on an elastic intermediate layer directly on the solid ground. Laterally, the rail is guided by guide plates, the pairs in between form a track-accurate rail channel.

In the known fastening systems of the aforementioned type, the forces introduced via the rail are guided via the guide plate directly into the substrate supporting the rail. For this purpose, a shoulder is formed on the respective substrate for each of the guide plates, on which the associated guide plate is supported.

On the guide plate, a ω-shaped tension clamp is usually mounted, which presses in the assembled state with the free end portions of their spring arms on the free top of the rail of the rail to be fastened. At one of their free end portion respectively opposite, curved and supported on the guide plate support portion, the spring arms of the tension clamp go into an over-center loop, which is braced by means of a clamping screw against the solid ground.

In addition to the above-described prior art is in the DE 41 01 198 C1 an angled guide plate of the type described above, which is intended for fastening a rail by means of a ω-shaped clamp. In the known angle guide plate recesses are provided, in which after assembly of the U-shaped bent middle part of the clamp is located. In addition, the known angle guide plate has a groove which extends in the mounting position parallel to the rail. In this groove are after assembly the outwardly leading portions of the tension clamp longitudinally and transversely supported to be fastened rail.

To improve their permanent electrical insulation, the known angle guide plate laterally integrally formed on them sections whose surface is inclined so that water reaching them is directed away from the angled guide plate. However, this only applies to the water reaching the lateral sections. On the other hand, in the central region of the angled guide plate, water accumulations can continue to form which, on the one hand, causes corrosion of the parts of the respective clamping element which are in the accumulation of water and, on the other hand, impairs the electrical insulation of the clamping element and, concomitantly, the insulation of the rail in electrically conductive contact with the clamping element can be.

In the DE 102 54 679 B4 has been proposed to eliminate this disadvantage, even in the central region of the surface of the angled guide plate form at least one drainage surface, which derives at least partially reaching the surface liquid from the relevant section. By suitable arrangement of the drainage surfaces can be prevented, for example, collect rainwater or other liquids on the angled guide plate. In order to protect in particular the opening for performing the fastening screw against the ingress of water, according to the invention adjoins the drainage surface to the opening so that in the region of the opening liquid reaching is passed away from the opening. For this purpose, the drainage surface in question as the opening at least partially be formed surrounding collar. This collar can serve at the same time to fix the position of the fastening portion on the angled guide plate by forming a stop against which the inside of the mounting portion of the spring element in the mounting position positively rests.

In the case of an angled guide plate according to the invention, the upper side can be designed so that a conventionally designed spring element mounted on the angled guide plate is laterally guided in the region of at least one of its sections extending transversely to the rail in the assembled state. In this way, can be safely prevent the spreading of the spring element due to higher clamping forces, which are required to apply the high, required for a permanently secure attachment of highly loaded rails holding forces.

In addition to the above-described prior art is from the WO 97/32083 A1 and the DE 20 2007 018 500 U1 in each case a guide plate for laterally guiding a rail on an abutment known, which is formed by a molded into a threshold shoulder. The threshold forms a base, which has a footprint on which the guide plate is in the assembled state. In this case, the guide plate has a support bearing associated with the support portion with a support surface with which the guide plate is supported in the assembled state on the abutment. At the same time, a shoulder is formed on the support portion, through which the abutment associated end face the support surface of the Support section is extended. Finally, the maximum height of the shoulder over the footprint of the ground associated bearing surface of the guide plate is greater than the maximum height of the guide plate in the assembled state supporting abutment on the footprint of the ground. Accordingly, the shoulder is in the assembled state at a considerable distance above the ground. In this way, the shoulder provides a barrier to liquids that may accumulate on the ground or the guide plate, for example in heavy rain. However, there is the problem that moisture in the assembled guide plate passes into the gap, which is inevitably present between the substrate and the guide plate in the region of the anvil and the shoulder of the guide plate.

Despite the measures described above for improving the electrical insulation, the requirement has arisen in practice to further improve the protection of the rail against electrically conductive contact with the substrate supporting the rail.

Against this background, the task has been found to provide a guide plate and such a guide plate comprehensive system for securing a rail in which fastened with simple means and minimal effort the security against electrical contact with a such guide plate or the system concerned Rail with the supporting surface is further optimized.

A solving this problem guide plate according to the invention has the features specified in claim 1.

With regard to the system, the solution according to the invention of the above-stated object is that such a system is designed according to claim 8.

A guide plate according to the invention for laterally guiding a rail on an abutment, which is formed on a substrate having a footprint on which the guide plate is in the fully assembled state, in accordance with the above-mentioned prior art with the abutment associated support portion a support surface with which the guide plate is supported in the assembled state on the anvil. In this case, a shoulder is formed on the support portion, by which the abutment associated end face, the support surface of the support portion is extended. In this way, the maximum height of the shoulder over the footprint of the ground associated bearing surface of the guide plate is greater than the maximum height of the guide plate in the assembled state supporting abutment on the footprint of the ground.

In a guide plate according to the invention, therefore, the shoulder formed on the support portion is dimensioned so that it protrudes upwards over the abutment when the guide plate is assembled. The thus formed shoulder accordingly forms, as in the above-mentioned prior art, a barrier to moisture which collects in practical use on the guide plate and at conventional guide plates due to surface tension and adhesive or cohesive forces as a thin film on the surface of the conventional guide plates also in places where there is no immediate increase in fluid accumulation. By inventively provided shoulder of relevant for the electrical insulation creepage path is extended, so that in a guide plate according to the invention, the resistance to the formation of leakage currents, which overcome the support portion and the counter bearing or the guide plate supporting ground penetrating leakage currents is increased.

At the same time, the shoulder provided according to the invention reduces the risk of penetration of liquid into the unavoidable gap between guide plate and counter-bearing in the mounted state. Accordingly, in a guide plate according to the invention, the possibility inherent in the capillary effect basically of the penetration of larger amounts of liquid in the relevant gap is significantly reduced, otherwise the formation of electrical bridges could be favored. Thus, the inventively increased shoulder also forms a barrier to moisture that would otherwise pass over the anvil on the guide plate and there could affect the electrical insulation of the clamping element or the rail used or cause corrosion.

The inventive design of a guide plate is as simple as possible means an effective improvement of the electrical insulation on and on the Guide plate supported, consisting of a conductive material components causes.

In principle, the advantageous effect of the shoulder formed on a guide plate according to the invention already occurs when the shoulder formed on the support section rises so high above the support section that, in the assembled state, it is above the guide plate associated abutment upwards without its abutment associated with the end face rests against the abutment.

In addition, is protected by the inventive design of a guide plate existing in the assembled state between abutment and guide plate gap against ingress of liquid and dirt by the shape of the abutment associated end face of the shoulder is adapted to the shape of the thrust bearing that the end face of the Shoulder with fully assembled shoulder tight and positive fit against the anvil.

According to the invention, the shoulder of the guide plate is shaped in such a way that it acts with slight pressure on the counter bearing when the guide plate is tensioned on the substrate so that the sealing action of the end face of the shoulder then resting on the counter bearing is additionally supported. For this purpose, the shoulder is formed protruding in the direction of its end face associated with the counter bearing. This embodiment of the invention allows in practice the further advantage that the guide plate in the assembled state not only aligned in a transverse to be fastened rail horizontal direction, but also in a direction that has a vertical component can be supported on the anvil.

In order to optimize the fit of the present invention provided on the shoulder end face to its associated contact surface of the thrust bearing, the abutment associated end face of the shoulder and at least adjacent to it area of the support surface of the support portion is also arched like a throat.

A guide plate according to the invention is in practice as the well-known guide plates of the type mentioned on its side facing away from its support surface top a support surface for a aufbringendes to hold down the rail to be fastened spring element, which is bounded in the direction of the shoulder by a groove in the sitting at ready mounted guide plate a Torsionsabschnitt of the spring element. Additional protection against accumulating on the guide plate water can be achieved in accordance with a further embodiment of the invention, characterized in that the groove is open at least one of its ends and the bottom of the groove is designed sloping towards this end. Liquid entering the groove can thus flow off laterally across the open end of the groove. Likewise, it is of course possible to provide a separate outflow opening in the region of the groove, to which the beveled bottom section leads and can flow off via the liquid.

A particularly simple and at the same time effective variant of the invention is characterized in this context characterized in that the groove is open at both ends thereof and in each case a portion of the bottom of the groove is sloping towards one of these ends. If a ω-shaped tension clamp is used in combination with a guide plate according to the invention as spring element, the mutual insulation of the torsion sections of the tension clamp sitting in the groove when the tension clamp is mounted on the guide plate can be improved by forming a transverse direction between the respective sections of the groove Is formed longitudinally of the groove-aligned web, which separates the sections from each other. The web can also act as a guide, which additionally secures the proper position of the tension clamp on the guide plate.

Usually for tightening the seated on the guide plate spring element clamping screws are screwed by a molded into the guide plate, leading from its top to its bottom through hole in a dowel inserted into the ground. By at the top of the guide plate around the respective passage opening circulating, is formed over the support surface for the spring element elevating collar can prevent that on the guide plate collecting liquids get into the through hole and jam there. In this way, the usually made of a conductive material, provided for bracing the spring element clamping means is securely protected against corrosive attack. In addition, the risk is minimized by standing in the through hole Fluid an electrically conductive contact between the rail and the substrate is formed.

In order to minimize the weight of the guide plate according to the invention, at least one recess may be formed in it from its underside.

In accordance with the above explanations, a system according to the invention for fastening a rail to a substrate on which an abutment in the form of a shoulder rising above a support surface is formed comprises a guide plate designed according to the invention, wherein the shoulder formed on the guide plate is finished mounted state on the one hand with its end face is assigned to the counter bearing and is arranged with its free upper edge above the thrust bearing.

A particularly advantageous embodiment of a system according to the invention for practical use, which additionally has the advantage of a particularly accurate, positionally secure positioning of the guide plate, is that a depression is formed in the area of the transition to the abutment between the contact surface and the abutment in the assembled state, a projection formed on the underside of the guide plate is seated. The guide plate is formed in this so in the manner of a known angle guide plate of the type specified, which sits in a practical use in a well-formed in a known manner underground.

Fig. 1

eine Führungsplatte in perspektivischer Ansicht;

Fig. 2

die Führungsplatte in seitlicher Ansicht;

Fig. 3

die einem Gegenlager zugeordnete Stirnseite der Führungsplatte in einer frontalen Ansicht;

Fig. 4

einen Befestigungspunkt für eine Schiene in einer seitlichen teilgeschnittenen Teilansicht.

The invention will be explained in more detail by means of exemplary embodiments. Show it:

Fig. 1

a guide plate in perspective view;

Fig. 2

the guide plate in lateral view;

Fig. 3

the end face of the guide plate associated with an abutment in a frontal view;

Fig. 4

an attachment point for a rail in a partial side partial view.

In Fig. 4 For example, a system S1 for securing a rail S to a subsurface U formed by a concrete sill is shown. The system S1 forms together with a second, not visible here, identically constructed and fixed on the opposite side of the rail S system an attachment point in which the rail S is held elastically on the substrate U.

The system S1 comprises a guide plate 1, an ω-shaped tension clamp 2 and a tensioning screw 3 for tightening the tension clamp 2 against the ground U.

The one-piece made of a plastic or other sufficiently solid material made guide plate 1 has the basic shape of a conventional angled guide plate and has an end face 4 with a support surface 5 through which the guide plate 1 in ready assembled state ( Fig. 4 ) is supported on an abutment G formed on the solid substrate U.

The abutment G has the shape of a shoulder shoulder extending over the width of the base U designed as a threshold, on which an abutment surface 6 assigned to the guide plate 1 and running obliquely downwards is formed. The abutment surface 6 merges into a rounded edge 7 in the flat, horizontally oriented top 8 of the thrust bearing G.

Furthermore, the guide plate 1 has a second end face 9 with a contact surface 10 on which, when the guide plate 1 is completely assembled, the rail foot F of the rail S to be fastened rests.

On the underside 11 of the guide plate 1, a support surface 12 is formed, with which the guide plate 1 is seated in the mounting position on the guide plate 1 associated contact surface of the flat surface U. In the direction of the first end face 4, the bearing surface 12 is bounded by a projection 13 which extends over the length L1 of the guide plate 1 and which is seated in a manner known per se with the guide plate 1 assembled in a correspondingly shaped groove 14 between the abutments G and G the contact surface of the substrate U is formed in the substrate U.

Starting from the bearing surface 12 1 recesses 15 are formed to minimize the weight and the material required for the production of material in the guide plate, which up to the contact surface 10 of the second Front page 9 are enough. In this case, the guide plate 1 is stiffened in the region of the recesses 15, inter alia by transversely to the end faces 4.9 aligned ribs 16 in the manner of a vault structure, so that with minimized material requirements optimal dimensional stability is secured.

Starting from its free surface 17, a through hole 18 leading to the underside 11 is formed in the guide plate 1, through which the clamping screw 3 is inserted in the assembly of the system S1 in a conventional manner to them to clamp the clamp 2 in one not here visible, screwed into the underground U plastic anchors to screw.

To optimize the electrical insulation, the passage opening 18 is surrounded on the surface 17 by a circumferential collar 19. This prevents accumulating liquid in the passage opening 18 on the surface 17 and there forms an electrically conductive bridge to the substrate U. At the same time, the circumferential collar 19 serves as a guide and support for the middle loop 20 of the tensioning clamp 2 to be mounted on the guide plate 1.

In order to prevent liquid from passing through the tensioning clamp 2 into the passage opening 18, drainage slopes, not shown here, can be formed on the collar 19. These can, starting from the inner edge of the collar 19 in the direction of each one of the lateral, extending between the end faces 4.9 extending side walls 21,22 of the guide plate 1 sloping, so that water or other liquid there from the tension clamp. 2 reaches the guide plate 1, is derived laterally on the surface 17 of the guide plate 1. The surface 17 itself may also be slightly sloping in the direction of the first end face 4 beveled so that liquid reaching them can flow away in the direction of the relevant end face 4.

In the direction of the first end face 4, the surface 17 of the guide plate 1 is bounded by a groove 23 extending in the longitudinal direction L in which the torsion sections 24 of the ω-shaped tensioning clamp 2 are seated in a manner also known per se in the fully assembled state, of which FIG Fig. 4 only one torsion section 24 is visible due to the cutting guide and side view selected there.

Also, the bottom of the grooves 23 at its side walls 21,22 associated open groove 23 may be divided, starting from the center of the groove 23 in two inclined surfaces 25,26, one of which in the direction of one wall 21 and the other in the direction of the other wall 22 drops.

In the middle of the groove 23, a web 27 is formed, which extends transversely to the longitudinal direction L via the groove 23 and the two inclined surfaces 25,26 separated from each other. The height and the length L of the web 27 measured in the longitudinal direction L are dimensioned such that when the system S1 is completely assembled, the web 27 keeps the torsion sections 24 of the ω-shaped tensioning clamp 2 insulated from each other at a defined distance.

The groove 23 is followed in the direction of the first end wall 4 by a support section 28 which forms the end of the guide plate 1 in the direction of the first end face 4 and on which the support surface 5 is formed. The support section 28 carries a shoulder 29 which extends over its length L28 and which on the one hand protrudes upward beyond the surface 17 of the guide plate 1 and on the other hand projects in the direction of the end face 4. The height H29 of the upper free edge 30 on the support surface 12 of the guide plate 1 is in relation to the height HG, with the top 8 of the abutment G is disposed over the contact surface of the substrate U, so dimensioned that the shoulder 29 when finished mounted guide plate 1, the abutment G surmounted. At the same time assigned to the abutment G end face 31 of the shoulder 29 is so vaulted adapted to the shape of the rounded edge 7 of the abutment G that the end face 31 as an extension of the support surface 5 of the guide plate 1 at ready assembled guide plate 1 with its face 31 and flat lies close to the counter bearing G. By the shoulder 29 of the guide plate 1 is fully assembled between the abutment G and the support portion 28 unavoidable joint gap 32 is covered so that from the guide plate 1 ago no liquid can penetrate into it.

The shoulder 29 thus forms an effective barrier against the otherwise by the capillary effect favored penetration of liquid into the joint gap 32 or the porous material of the substrate U. In this way, the shoulder 29 for optimized insulation of the existing usually made of electrically conductive steel tension clamp 2 and, accordingly, also out electrically conductive steel existing rail S against the underground U at. At the same time, the shoulder 29 stabilizes the position of the guide plate 1 on the abutment G by the guide plate 1 not only via its support surface 5 in a direction transverse to the longitudinal extent L of the rail S direction Q, but also in the direction V, which has a vertical component, is supported on the abutment G.

REFERENCE NUMBERS

1

guide plate

2

ω-shaped tension clamp

3

clamping screw

4

the abutment G associated end face of the guide plate. 1

5

Support surface on the front side 4

6

Counter bearing surface of the counter bearing G

7

Edge of the anvil G

8th

Top of the anvil G

9

the rail foot F associated end face of the guide plate. 1

10

Contact surface on the front 9

11

Bottom of the guide plate 1

12

Support surface on the bottom 11

13

head Start

14

groove formed in the underground U

15

Recesses of the guide plate 1

16

Ripping the guide plate 1

17

at the top of the guide plate 1 existing surface

18

Through opening

19

collar

20

Middle loop of the tension clamp 2

21.22

Side walls of the guide plate 1

23

Groove of the guide plate 1

24

Torsion section of the tension clamp 2

25.26

Sloping surfaces at the bottom of the groove 23

27

web

28

Support section of the guide plate 1

29

shoulder

30

edge

31

the abutment G associated end face of the shoulder 29th

32

joining gap

H29

Height of the upper free edge 30 on the support surface 12 of the guide plate. 1

HG

Height of the top 8 of the abutment G on the footprint of the underground U

L

longitudinal extension

L1

Length of the guide plate 1

L28

Length of the support section 28

Q

oriented transversely to the longitudinal extent L direction

S

rail

S1

System for fastening the rail S

U

substrate formed by a concrete sleeper

V

Direction with a vertical component

Claims (10)

1. Guide plate for the lateral guidance of a rail (S) on a counter bearing (G), which is formed on a base, which has a contact area, on which the guide plate (1) stands in the completely assembled state, the guide plate (1) having a support portion (28), which is associated with the counter bearing (G), with a support face (25), with which the guide plate (1) is supported, in the completely assembled state, on the counter bearing (G), wherein a shoulder (29), by means of the end face (31) of which, associated with the counter bearing (G), the support face (5) of the support portion (28) is extended, is formed on the support portion (28), characterised in that the shoulder (29) is configured projecting in the direction of its end face (4) associated with the counter bearing (G) and in that the end face (31) of the shoulder (29) associated with the counter bearing (G) and at least the region adjoining it of the support face (5) of the support portion (28) is curved in in the manner of a groove.
2. Guide plate according to claim 1, characterised in that on its upper side remote from its bearing face (12), it has a surface (17) for a spring element (3) applied to hold down the rail (S) to be fastened, which surface is limited in the direction of the shoulder (29) by a channel (23), in which a torsional portion (24) of the spring element (3) is seated when the guide plate (1) is completely assembled.
3. Guide plate according to claim 2, characterised in that at least one opening is provided in the region of the channel (23) and the base of the channel (23) is formed sloping in the direction of this opening.
4. Guide plate according to claim 3, characterised in that the channel (23) is open at its two ends and a portion (25, 26) of the base of the channel (23) is formed sloping in the direction (L) of one of these ends, in each case.
5. Guide plate according to claim 4, characterised in that a web (27) oriented transverse to the longitudinal direction (L) of the channel (23), which web separates the portions (25, 26) from one another, is formed between the portions (25, 26) of the channel (23).
6. Guide plate according to any one of the preceding claims, characterised in that it has a through-opening (18), which leads from the upper side of the guide plate (1) to the lower side (11) thereof, on which the bearing face (12) is formed, and in that a collar (19) rising over the surface (17) and running around the through-opening (18) is formed on the surface (17) of the guide plate (1).
7. Guide plate according to any one of the preceding claims, characterised in that at least one recess (15) is formed into it from its lower side (11).
8. System for fastening a rail (S) on a base (U), on which a counter bearing (G) in the form of a shoulder (29) rising over a contact area formed on the base (U) is formed, with a guide plate (1), which is formed according to any one of claims 1 to 7, the shoulder (29) formed on the guide plate (1) being associated, in the completely assembled state, by its end face (4) with the counter bearing (G) and, with its free upper edge (30), being arranged above the counter bearing (G).
9. System according to claim 8, characterised in that the support face (5) of the support portion (28) of the guide plate (1) and the end face (31) of the shoulder (29) of the guide plate (1) rest positively on the counter bearing (G).
10. System according to any one of the preceding claims, characterised in that a depression (14), in which, in the completely assembled state, a projection (13) formed on the lower side (11) of the guide plate (1) is seated, is formed in the region of the transition to the counter bearing (G) between the contact area and the counter bearing (G).

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