WO2013123987A1

WO2013123987A1 - Plate component for a system for attaching a rail, attachment point for a rail, and method for producing a plate component

Info

Publication number: WO2013123987A1
Application number: PCT/EP2012/053028
Authority: WO
Inventors: Werner Koch; Marc KAUFMANN
Original assignee: Vossloh-Werke Gmbh
Priority date: 2012-02-22
Filing date: 2012-02-22
Publication date: 2013-08-29
Also published as: JP2015508133A; JP6021950B2

Abstract

The invention relates to a plate component (7, 20) for a system for attaching a rail (S) to a subsoil (U) and to a method for producing such a plate component (7, 20), wherein the plate component (7, 20) comprises at least two layers (10a, 10b; 21a, 21b) that are stacked one on top of the other and non-detachably interconnected, the first layer (10a; 21a) of which consists of a first material and the second layer of which consists of a material that differs in at least one mechanical property from the material of the first layer (10a; 21a), wherein an intermediate layer (10c; 21c) that has been at least partially melted by exposure to heat is present between the layers (10a, 10b; 21a, 21b), the at least partially molten material of which intermediate layer is bonded to the material of the two layers (10a, 10b; 21a, 21b) abutting against said intermediate layer.

Description

Panel component for a system for fastening a rail, attachment point for a rail and method for producing a panel component

The invention relates to a plate component for a system for fastening a rail to a substrate, wherein the plate component comprises at least two mutually stacked, non-releasably interconnected layers, of which the first layer of a first material and second layer consists of a material which is in distinguishes at least one mechanical property of the material of the first layer.

Moreover, the invention relates to a formed using such a plate member

Attachment point in which a rail on a

Ground is attached.

Finally, the invention relates to a method for

Production of a panel component according to the invention and its application.

Panel members of the type in question are used in rail fastening systems to form the one formed using such a system

Attachment point a defined elastic

To give flexibility in the direction of gravity. In As a result of their elastic support, the rail can move when crossing the respective attachment point in

Heavy-duty loads over a long life cycle can be reliably absorbed even if the ground has no or at most a minimum

Has yielding. Such relationships are

typically in so-called "fixed lanes" where the rails are mounted on concrete sleepers that are either immediately part of larger ones

Concrete slabs are or stand on such slabs.

The loads to which plate components used to support rails for railway vehicles are subjected are considerable. For example, due to the relative movements which inevitably occur there, the plate component in the area of its supporting surface on which the rail rests with its rail foot bears the risk of high levels of abrasive wear. At the same time, on the one hand, an optimal permanent elasticity of the plate component

demanded and on the other hand demands that the of the

Rail outgoing loads as evenly as possible be distributed to the elastic layer of the plate component.

In order to meet these different loads and requirements, plate components have been developed, which consist of at least two layers with different

Properties exist. While one location the

Ensures required wear resistance and dimensional stability, the other layer is optimized in terms of their permanent elasticity. By the layers are inextricably linked together, the known plate components can be easily despite their multi-layered assemble. The permanent connection between the layers is usually produced by the fact that the mutually associated surfaces of the layers of the

Plate component coated flat with a suitable adhesive and then placed on each other so that they stick together firmly.

Problems arise in the known plate components of the type described above, when exposed to unfavorable weather conditions or shear forces, which can occur in unfavorable installation situations or as a result of high shear forces. Such lateral forces can be particularly in the range of curved sections

occur, which are traversed at high speed.

As a result of the weather or shear loads, it may happen that shear the layers of the plate member from each other. This can go so far that the layers first completely separate from each other and then begin to wander under the dynamic forces acting in the attachment point, until they in passing the attachment point in consequence of this also

occurring air movement with high kinetic energy are thrown away from the attachment point. This can be particularly dangerous if one of the layers consists of a hard, dimensionally stable material.

Against the background of the prior art described above, the object of the invention was to provide a plate component for a sliding attachment and

Attachment point for a rail to create that can produce inexpensive and at the same time with high security is ensured that the layers of the plate component even under unfavorable

Operating conditions remain connected. Similarly, a procedure should be specified that the

cost-effective production of such plate components

allows.

With regard to the plate component, this object has been achieved according to the invention that the

Plate element having the features specified in claim 1.

With respect to the attachment point for a rail, the solution to the above object is that the attachment point is made using a plate member according to the invention.

The cost-effective production of a

Inventive board component according to the invention

at least to be completed steps are in

Claim 11 specified.

A panel component according to the invention for a system for fastening a rail to a substrate comprises at least two stacked, insoluble

interconnected layers, of which the first layer of a first material and second layer consists of a material which is in at least one mechanical

Property differs from the material of the first layer. In particular, the material of the second layer has a higher wear resistance or strength and

Dimensional stability as the material of the first layer. According to the invention is between the layers of the

Plattenbauelements a by heat at least melted intermediate layer present, the at least molten material cohesively with the

Material of the two adjacent to them has connected layers.

Unlike in the prior art, in which the superimposed layers of the plate member are glued together, in a panel component according to the invention, the layers stacked on each other in the manner of a weld inextricably bonded together. The

Welding takes place by supplying heat and with the aid of a film which is arranged between the layers of the plate component. The film acts like a welding additive. It melts at least partially due to the added heat and thus establishes the connection between the layers.

The produced by such a weld

Connection between the individual layers of the

Panel component proves both under unfavorable weather conditions as well as under unfavorable

dynamic loads much more durable and durable than a conventional bonding. The welding according to the invention allows the material forming the intermediate layer to be attached to the

Materials of the layers to be joined together

that a relationship between the substances in question or the conformity of certain constituents forms between the materials of the layers and the intermediate layer.

A particular advantage of the invention is that welding of the layers of the plate component produced according to the invention with the aid of a deliberately introduced intermediate layer can easily connect materials which have different properties optimally adapted to the respective functions. Thus, with the invention, plate components can readily be made available, in which one layer is elastically yielding, while the other layer is dimensionally stable and hard, so that it consequently has a high resistance to abrasive wear. For this purpose, the the

dimensionally stable position be made for example of a hard plastic. This can additionally be fiber-reinforced to ensure the required load capacity. As for the dimensionally stable position suitable plastics polyamide, polyethylene or polypropylene plastics have proven, if necessary, reinforced by glass fibers or high-performance fibers.

Alternatively or additionally, it is also possible to use one of the layers of a panel component according to the invention

To produce metal material. Thus, in practice exposed to abrasive wear, the foot of the rail associated position of a plate member according to the invention may be formed, for example, of a steel sheet material.

Of course, the number of layers is one

plate component according to the invention not to two

limited. Rather, an inventive Plate component comprise three or more layers. Also in this case, at least two of these layers are in

according to the invention with each other by a

Welded intermediate layer, wherein optimally each of the layers with the voltage applied to her by a

Interlayer is welded in accordance with the invention.

The elastic layer may for example consist of an ethylene-propylene-diene monomer ("EPDM") of sufficiently fine porosity. Likewise, for example, the

elastic layer of natural rubber ("NR"),

Nitrile rubber ("NBR"), chloroprene rubber ("CR"), polyurethane - ("PU") and the like.

The for welding the layers of the invention

Plate component used film and, consequently, the existing in a finished plate component

Interlayer can consist of a polyethylene material.

The permanently fixed connection of the layers of a

Plate component according to the invention can be supported by the fact that the layers in addition to the cohesive connection form-fitting or non-positively with each other

are coupled. A positive connection can be created for example by the fact that the one layer has at least one portion which rests laterally against the respective other layer. In practice, it proves to be advantageous if the one layer has a number of such sections, which is sufficient to the position of the one layer with respect to the other layer at least in two

Define degrees of freedom. According to the above explanations, an attachment point according to the invention for fastening a rail to a substrate comprises at least one

Plate component according to the invention, which is located between the

Subsurface and the foot of the rail to be fastened is arranged. Particularly suitable is such

Attachment point according to the invention for fastening a rail on a fixed track, in which the attachment to a concrete or a comparable solid

Material existing threshold or plate takes place.

The inventive method for producing a panel component according to the invention comprises the following

Steps:

- Stacking the first and second layer and a film, which consists of a heat-melting, adhering in the molten state to the layers of material, to a stack in which the film between the two layers is located; and

- Heating the stack to a temperature at which the film at least melts under formation of the intermediate layer, the insoluble cohesively with the on the film

connected to adjacent layers.

The way in which heat is supplied by which the film lying between the layers to be joined is melted can in itself

be known manner matched to the respective processed materials. Here are all conventional Procedure in question, ensuring a sufficient temperature supply with sufficiently uniform contact between the layers and the film.

In particular, in the case that the one layer of EPDM material and the other layer consists of a polyamide, is suitable for welding the layers of a plate member according to the invention, a film which consists of a polyethylene material, because polyethylene is part of EPDM.

To those made by the invention

To optimize welding produced connection, the layers to be joined together can be subjected to a pretreatment, at least at their mutually associated surfaces in which the surfaces are roughened. The roughening can be chemical or

physically, for example by a mechanical

Processing, be generated. Likewise it is conceivable already in the tool, in which the relevant situation

is prepared to set specific roughness in the area of the respective surface. The roughening of the surface increases the attack surface for the weld, so that a total of

improved connection of the respective situation to the

Intermediate layer and concomitantly to the other position is achieved.

Basically, it may be for the inventive

Welding the layers of the plate member sufficient if the intermediate layer forming film is only melted, so not completely due to the heat supply melts. In this case, the respective heat input or the degree of melting over the heating time and temperature can be controlled. This can

Of course, if necessary, be dimensioned such that the film completely melts and forms an intermediate layer which completely from the

Material of the film and optionally also

melted material of the adjacent layers of the

Plate component consists.

The uniformity of the cohesive connection of the layers of a film which takes place via the film

Inventive board component together

additionally be supported by the fact that the

Panel forming stack during heating with a normal to the plane in which the film is located

is subjected to aligned pressure load. The

Depending on the shape of the component, pressure distribution optimally takes place in such a way that the

Compressive load extends evenly over the entire surface of the film.

The invention is based on

Embodiments explained in more detail. Show it:

1 shows an attachment point for a rail in a side, partially sectioned view.

Fig. 2 is a plate member in a perspective

View ; FIG. 3 shows a stack prepared for producing the panel component shown in FIG. 2 in a partially cut-away perspective view; FIG.

Fig. 4 shows the stack of FIG. 3 in one

Exploded view;

Fig. 5 shows an alternative embodiment of a

Plate component in perspective view.

The fastening point B shown in FIG. 1, in which the rail S is fastened on a threshold forming a solid base U, comprises two tensioning clamps 1, 2, two guide plates 3, 2, two required as tensioning means for tensioning the respective tensioning clamp 1, 2 Tightening screws 5.6 and a substantially rectangular in plan view formed, used as a shim

Plate component 7.

The plate member 7 has adjacent to its

Narrow sides in the direction of its longitudinal sides projecting portions, so that the plate member 7 in plan view has the shape of an "I" or double-T's.

Each one of the clamps 1.2, one of

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 plate member 7 between the foot F of the rail S and the substrate U is located. The rail S is

Accordingly, with her foot F on the associated top 8 of the plate member 7, with his

Bottom 9 is on the flat AufStandfläche the substrate U. The guide plates 3, 4 are here designed in the manner of conventional angled guide plates and have on their subsurface U associated underside an over their longitudinal direction of the rail S measured width extending paragraph, which in befindlichem in assembly position guide plates 3 each in an associated, corresponding sits in the underground U molded groove. In addition, the

Guide plates 3.4 are supported in the assembled position, each with their back facing away from the rail S back on a likewise formed on the substrate U shoulder. At its the rail foot F assigned, opposite the

Rear widened front side have the

Guide plates 3.4 each have a contact surface against which the rail foot F is supported with its longitudinal edge. From the rail S when passing through a rail vehicle not shown here transverse forces Q are received by the guide plate 3.4 and directed laterally directed against the respective shoulder in the substrate U.

At their tops, the guide plates 3,4 here not shown in detail form elements for guiding the mounted on the respective guide plate 3.4 respectively mounted tension clamp 1.2 and here also not visible, from the top to the ground U leading

Through opening through which the tensioning screw 5,6 used in each case for tensioning the respective tensioning clamp 1,2 is inserted. The clamping screw 5.6 is in each case screwed into a submerged in the underground Ü, not visible here dowels. The inserted in the attachment point B as Unterlegplatte plate member 7 provides a defined elastic

Compliance of the attachment point B in the vertical direction V sure. For this purpose, this includes

Plate member 7, a first layer 10a, the in

Mounting position lies on the substrate U and consists of a permanently elastic compressible, fine-pored EPDM material.

On the first layer 10a is a second layer 10b, which consists of a glass fiber reinforced polyamide and has such a high dimensional stability that they are in the

Passing through the attachment point B by a

Rail vehicle occurring, acting in the direction of gravity loads safely and evenly distributed to the elastic first layer 10 a. In this case, the second layer 10b has a high resistance to abrasive wear, so that any relative movements between the second layer 10b and the rail foot F, in the

Attachment point B is on her, the longevity of the second layer 10b does not affect.

Between the first layer 10a and the second layer 10b of the plate member 7, an intermediate layer 10c is provided, via which the two layers 10a, 10b are non-detachably welded together in a materially bonded manner.

The intermediate layer 10c is formed by a film 11 which has been placed in the production of the plate member 7 between the layers 10a, 10b. The film 11 is made of a polyethylene material. In order to assist the welding of the layers 10a, 10b with the film 11, the layers are 10a, 10b have been roughened on their surface lOd, loO associated with the foil.

For welding, a stack 12 is formed from the layers 10a, 10b and the film 11, in which the film 11 lies between the layers 10a, 10b. The shape of the film 11 corresponds exactly to the shape of its associated surfaces 10d, 10e of the layers 10a, 10b, so that the surfaces 10d, 10e of the layers 10a, 10b are completely covered by the film 11.

After stacking, the stack 12 is placed in a pressing device, not shown here, in which the stack 12 is held under a certain pressure from a direction N which is normal to the film 11. This one is like this

set that elastic first layer only

is slightly compressed, but the two layers 10a, 10b are held over the entire surface in contact with the film 11. In the pressing device, the stack 12 is then brought to a temperature in which the film 11

melts. At this temperature, the stack 12th

held until the film 11 is completely melted and the material of the film 11 is a cohesive

Connection with the adjacent surfaces 10d, 10e of the layers 10a, 10b is received.

After cooling of the stack 12, the intermediate length 10c is present between the layers 10a, 10b, via which the layers 10a, 10b are firmly and non-detachably connected to one another.

The illustrated in Fig. 5 alternative embodiment also as a shim for the attachment point B. usable plate member 20 is the same as that

Plate component 7 of two layers 21a, 21b and a

Liner 21c has been made. The intermediate layer 21c, like the intermediate layer 10c, has been produced from a film placed between the layers 21a, 21b.

The substrate 21 associated with the first layer 21a is made of the same material as the first layer 10a of

Plate member 7. In contrast to the plate member 7, however, the second layer 21b is formed of sheet steel in the plate member 20.

The plate member 20 has in its four corner regions as the plate member 7 adjacent to its narrow sides and in the direction of its longitudinal sides projecting portions 22 which are equally present in the first layer 21a and the second layer 21b. In the upper second layer 21b, lateral edge regions 23, 24 each depend on these sections 22. These are folded down in the direction of the first layer 21a so that they rest with laterally on the narrow sides of the protruding portions 22 of the first layer 21a. In this way, on the upper second layer 21b is a kind of recording

formed in which the lower first layer 21a is held positively.

By bending the edge regions 23, 24 into the lower first layer 21 a beyond an angle of 90 °, the lower first layer 21 a can additionally be clamped to the upper second layer 21 b. In this case, the layers 21a, 21b of the plate member 20 are cohesively through the intermediate layer 21c and over the first Position 21a at least partially enclosing

Edge regions 23,24 of the upper layer additionally positively and non-positively connected to each other.

REFERENCE NUMBERS

1.2 tension clamps

3,4 guide plates

5.6 clamping screw

7 plate component

8 top of the plate member 7th

9 underside of the plate member 7th

10 a first position of the plate component. 7

10b second position of the plate member. 7

10 c intermediate layer of the plate component 7

11 foil

12 piles

20 plate component

21 a first position of the plate component 20

21b second position of the plate member 20th

21 c intermediate layer of the plate component 20

22 laterally projecting portions of the plate member 20th

23,24 edge regions of the second layer 21b

B attachment point

F foot of the rail

N direction normal to the film 11th

Q lateral forces

S rail

Underground

V vertical direction

Claims

P A T E N T A N S P R E C H E

A panel component for a system for securing a rail (S) to a substrate (U), the panel component (7; 20) comprising at least two layers (10a, 10b; 21a, 21b) stacked on top of each other, of which the first 21a) consists of a first material and a second layer of a material which differs in at least one mechanical property from the material of the first layer (10a, 21a), characterized in that between the layers (10a, 10b; 21b), the at least molten material of which has bonded materially to the material of the two layers (10a, 10b, 21a, 21b) adjoining it.

A panel component according to claim 1, characterized in that the one layer (10a; 21a) is elastically yielding while the other layer (10b; 21b) is dimensionally rigid.

3. panel component according to claim 2, d a d u c h e c e s n e c e s, d a s s

dimensionally stable layer (10b; 21b) consists of a fiber-reinforced hard plastic.

4. plate component according to claim 3, d a d u r c h

g e n c i n e s, the s

Hart kunststof f is a polyamide material.

5. panel component according to claim 2, d a d u r c h

e n c ia n, the s

dimensionally stable layer (10b, 21b) consists of a metallic material.

6. The panel component according to claim 2, wherein the elastic layer (10a, 21a) consists of a fine-pored ethylene-propylene-diene monomer.

7. panel component according to one of the preceding

Claims, d a d u r c h

e n c ia n, the s

Intermediate layer (10c, 21c) consists of a polyethylene material.

8. plate component according to one of the preceding

Claims, d a d u r c h

characterized in that the layers (10a, 10b, 21a, 21b) are positively or non-positively coupled to each other in addition to the cohesive connection.

9. plate component according to one of the preceding

Claims, d a d u r c h

In other words, one layer (21b) has at least one section (23, 24) which rests laterally against the respective other layer (10a, 21a).

10. Attachment point for a rail (S) on one

Underground (U), with one according to one of

trained above claims

Plate component (7; 20) which is arranged between the base (U) and the foot (F) of the rail (S) to be fastened.

11. A method for producing a according to one of

trained above claims

Plate component (7; 21) comprising the following

Work steps:

Stack the first and second layers

(10a, 10b, 21a, 21b) and a film (11), which consists of a heat-melting, in the molten state at the layers

(10a, 10b, 21a, 21b) adhering material to a stack (12), wherein the film (11) lies between the two layers (10a, 10b, 21a, 21b); Heating the stack (12) to a temperature at which the film (11) at least melts and forms an intermediate layer (10c, 21c) which is non-releasably bonded to the film (11)

adjacent layers (10a, 10b, 21a, 21b) is connected.

12. The method of claim 11, d a d u r c h

The positions are not the same

(10a, 10b, 21a, 21b) are grayed at least on their surface facing the film (11) before stacking.

13. The method of claim 11 or 12, d a d u c e c e c e n e c e s, d a s s

Heating duration and temperature is such that the film (11) completely melts.

14. The method according to any one of claims 11 to 13,

The stack is aligned during heating of a normal to the plane in which the film lies

Pressure load is exposed.