DE202009014462U1 - System for securing a rail to a solid surface and fastening a rail - Google Patents

Abstract

System for fastening a rail (S) on a solid base (2), comprising the following elements:
A shim (3) made of a plastic material,
- an intermediate layer (4) arranged between the shim (3) and the fixed base (2),
- A between the intermediate layer (4) and the substrate (2) arranged support plate (5),
A spring element (8a, 8b) for holding down the rail (S) to be fastened,
- A clamping screw (10a, 10b) for clamping the spring element (8a, 8b) against the shim (3)
and
- A fastening element (7a-7d) for fixing the shim (3) on the solid surface (2).

Description

The The invention relates to a system for securing a rail on a solid ground, typically through a concrete sleeper or Concrete plate is formed. Such systems should be inexpensive be produced, can be easily mounted and at the same time for as long as possible ensure a safe function.

Out The practice is a "ECF" offered under the name Rail fastening system known in which, the rail on the Footprint of a steel shim stands. At their aligned in the longitudinal direction of the rail to be fastened Long sides is the footprint by each a rib limited, at the side in the assembled state of the rail foot is guided. In addition, the rib serves as a bearing for a clamping screw with its screw head in a molded into the rib receptacle positively sits and with her shaft from the top of the shim groundbreaking the middle loop of a W-shaped tension clamp be upheld. By means of a screwed onto the clamping screw nut is then the tension clamp is clamped against the washer so over the free ends of the spring arms of the tension clamp sufficient Hold-down force exerted on the respective side of the rail foot becomes.

A sufficient compliance of one formed by the ECF system Rail fastening when driving over a rail vehicle is ensured by an elastic intermediate layer, between the shim and one fixed to the respective one Underground lying support plate is arranged.

Around an adjustment of the position of the rail to the respectively required Gauge is in the ECF system in the laterally beyond the footprint Areas of the shim each one from its top their base leading sleeve opening formed, in which a trained as hold-down sleeve Eccentric sleeve is seated. The eccentric sleeve points at its upper end in mounting position a projection in shape one circulating around the peripheral surface of the sleeve Collar on, in assembly position on the top of the shim rests. At the same time, the between the bottom of the collar projection and remaining in the assembly position, the lower end of the eccentric sleeve Height so dimensioned that in the assembled state, the Sleeve stands on the slat. Through the sleeve opening the eccentric sleeve is a screw inserted, the screwed into a dowel embedded in the solid underground is and thus forms a rotation axis for the sleeve. This construction on the one hand ensures that the shim over which acts as a hold-down eccentric sleeve with a defined Hold-down force is braced against the solid ground. on the other hand can the position of the shim and with it the on her standing rail by a rotation of the eccentric sleeve move aligned transversely to the longitudinal extent of the rail, to adjust the position of the rail to the required gauge.

adversely to the known ECF system for fixing a rail is that the shim has a high weight and also the freedom in their design by the one used for their manufacture Steel material is limited.

To avoid the disadvantages of steel shims of the type discussed above, it has been proposed to manufacture such shims from plastic. An example of such a shim is in EP 1 950 347 A2 shown. The backing plate described therein has on its underside associated with the solid ground, a stiffening structure, which is formed of intersecting ribs which define between each unfilled recesses. In addition, through holes are formed in the shim through which a serving as a clamping screw conventionally shaped hexagon screw can be inserted from the underside of the washer forth to clamp a tension clamp against the shim. For the screw head of the clamping screw while a molded into the underside of the shim, also formed hexagonal receptacle is provided in which the screw head sits positively in the assembled state.

The from the EP 1 950 347 A2 known, made of plastic shim is intended to be placed directly on the respective solid surface. In order to allow a sufficiently firm hold, the known shim is provided on its narrow sides with three through holes, through which one in each case screwed into the solid ground fastening screw is inserted. Neither a track width adjustment nor an elastic mounting of the rail are provided.

In front in the background of the prior art described above The object of the invention is to provide a system for securing a Rail and a rail fastening to create, which is easier Mounting a great deal of freedom in the production of the required Components allow and at the same time a high utility value have.

According to the invention, this object is achieved by A system according to claim 1 for securing a rail to a solid ground and a rail attachment made using a system according to the invention. Advantageous embodiments of a system according to the invention are specified in the dependent claims on claim 1 and are explained below.

One Includes rail fastening system according to the invention Accordingly, a made of a plastic material shim. By making the plastic backing plate on the one hand a significant weight saving over the known, made of steel or cast iron existing shims. additionally It allows the use of plastic in a simple way to form the shim molds that are made with steel or similar Do not allow materials to be imaged.

For the invention of particular importance is also that of plastic manufactured shim in mounted state on an intermediate the shim and the solid underground arranged liner stands. This allows the elasticity of a comparable large-volume liner for as possible exactly predictable compliance of the system according to the invention accomplished attachment when driving over a Rail vehicle to use.

Around on the one hand as uniform as possible support to ensure the rail on the firm ground on the other hand, however, the abrasive wear of the elastic Minimizing liner is in an inventive Mounting system additionally one between the liner and to be arranged on the solid surface support plate. These if necessary from comparably thin sheet steel or consist of a sufficiently strong plastic.

additionally belongs to a system according to the invention a spring element, which in a conventional manner to hold down the required to be fastened rail spring force applies. To the Tensioning of the spring element is, as also usual, a clamping screw for clamping the spring element against the shim provided.

After all also includes the system of the invention at least one fastener for securing the shim on the solid ground, usually at least two or four such fasteners are needed to a rail fastening formed according to the invention sufficiently anchored on the respective solid ground.

By the inventive combination of a plastic manufactured underlay plate with a elastic carrying them Lage is thus a rail fastening system or a correspondingly assembled attachment of a rail to Available due to the minimized weight of their Items, especially their underlay, not only on extra easy way to assemble, but also a practical Requirements particularly well-fitting compliant behavior when driving over a rail vehicle shows.

In The shim may be at least one from its top to its Bottom side leading sleeve opening for a hold-down sleeve be formed, in which a hold-down sleeve with sliding seat whose height is greater than the thickness of the shim in the area of its associated Sleeve opening is and one of its peripheral surface having protruding projection, in the assembled state rests on the top of the shim, in which case then the fastener is provided through the sleeve opening the hold-down sleeve to be plugged. The in the sleeve opening inserted hold-down sleeve causes in this embodiment comparable with the prior art explained at the beginning, that the shim only with a given maximum force is charged. In this way, it is sure to prevent the out Plastic existing washer damaged by mounting error becomes. At the same time, the sleeve ensures that the elastic intermediate layer by the fastener only so far as it is for a safe Halt is required. The required elasticity of the elastic intermediate layer is thus also safely available in the assembled state. The sliding seat of the sleeve in its associated opening the shim ensures that the shim each in consequence of the loads when passing over Compression or expansion of the liner can follow unhindered.

In principle, a system according to the invention, just like the prior art, is suitable for track width adjustment accomplished with the aid of an eccentric sleeve. To take advantage of this possibility, the hold-down sleeve can be designed as an eccentric sleeve. In order to enable a particularly simple control of the particular adjustment made on the construction site in each case to make fair conditions, latching marks can be formed on the sleeve opening, taking into account the eccentricity of the axis of rotation of the eccentric sleeve with respect to the central longitudinal axis of the sleeve opening are spaced apart from each other such that upon a rotational adjustment of the eccentric sleeve about its axis of rotation in the sleeve opening by the locking marks rotation positions of the eccentric sleeve are defined, which correspond to a gradual change in position of the shim by a defined amount. By the hold-down sleeve has a compatible to the latching marks of the sleeve opening form element over which the sleeve sleeve in its associated sleeve-down sleeve is positively coupled with each one of the latching marks of the sleeve opening, the position of the shim can be easily understood in an easy for the fitter way adjust so that an optimally tailored track width adjustment without complex measurements is achieved.

The Defining the respective rotational position of the eccentric sleeve Locking the eccentric sleeve with the shim can by means of a formed on the eccentric sleeve, to the Take the form of the catch mark compatible element formula. Dependent from the arrangement of the respective formula element and the shape the eccentric sleeve, the locking marks, for example in the form of surrounding in the sleeve opening Formed edge region of the top of the shim. This may be useful, for example, if the eccentric sleeve designed as a hold-down sleeve is that carries a projection on its peripheral surface, in the assembled state on the top of the shim rests. A particularly safe and wear-resistant Fixation arises, however, when the catch marks in the Peripheral wall of the sleeve opening are formed.

Independently From where they are arranged, the catch marks as be formed groove-shaped recesses.

The Arrangement of the catch marks can be a specific for the respective application case follow favorable pattern. So can it is expedient under certain circumstances be when the set by the distance between two stop marks increment the change in position from Rastmarke to Rastmarke a certain Function increases following. One for the mechanic especially easy to understand and versatile adjustability results however, if the angular distances between each other adjacent stop marks are each dimensioned such that with each Rotary adjustment of sitting in the sleeve opening Eccentric sleeve a same amount Change in position of the shim is associated.

As well it contributes to the ease of handling, if one the stop marks is defined as "zero position", the when mounting a formed using the shim Attaching a rail the starting point for the change in position of Washer forms.

to Saves weight and increases its stiffness it also when in the fixed ground associated with the bottom the shim is formed by a stiffening structure which Ribs and existing between them depressions is formed. It can be characterized by the fact that at least one sufficient Number, in particular all wells of the stiffening structure with a filler are closed to prevent the danger that under load the stiffening structure in the elastic intermediate layer pushes and sustainably damaged. "Closed" means in this regard, any kind of filling the wells, through which ensures that in the fully assembled system in Case of load passing through a fastening point formed by the system Rail vehicle the ribs of the shim at most only push so little into the elastic intermediate layer that there is no permanent damage.

Dependent from the sensitivity and bearing capacity of the elastic It can do this on which the shim is to be placed be expedient, only a part of the wells fill with filler. So it offers itself in Cases in which the wells are regular are arranged, on, between two filled wells leave one or more unfilled, if thereby the for a lasting elastic behavior of the elastic Intermediate layer specified permissible surface loading under load is not exceeded. A particularly simple one Production and particularly safe function, however, results when all the depressions of the stiffening structure of an inventive Washer are filled with molding material.

Dependent the load capacity of the filler may be sufficient if he as a thin layer only in the manner of a lid the respective recess on its associated with the bottom opening closes. In this case, the filler may be for example, be a sufficiently strong foil or plate, which closes the opening of the respective recess.

Should However, a particularly resilient filling of the wells be achieved or filler in addition to Contribute to sound insulation or another additional Function, it may also be appropriate be the wells completely with the filler to fill or respectively so much filler in the To give pits that the filler over protruding the respective depression limiting ribs. Just in the latter case it is particularly certain that in practical use it does not damage the elastic Liner through the ribs comes.

In any case, the filling with the filling fabric, for example, after the production of the shim in a separate step are introduced into the respective recess. For this purpose, the filler can be injected into the depressions in the flowable state or used as a prefabricated molded element.

When Plastic for the production of the shim comes For example, glass fiber reinforced polyamide in question. As filler, however, for example, unreinforced is suitable Polyamide.

An excessive one Compression of the elastic intermediate layer under load can also be prevented by the fact that at the bottom of the Shim at its bottom at least one from the bottom pointing away, designed as a stop serving projection, is limited by the system mounted on the way to the underlay plate when passing over the rail a rail vehicle due to the elasticity of the elastic Liner sinks. The relevant projection can be after Type of apron in the direction of the respective solid ground circulating around the shim so as to be independent of their respective movement on all sides a stop for the Lowering the shim is guaranteed. One such circumferential projection has the additional advantage that he has the elastic intermediate layer against pollution and moisture protects. But that's exactly how it goes without saying also conceivable, in each case a separate lead at certain points to provide for the same purpose.

alternative or additionally, the function described above a formed on the shim projection also on take the support plate trained projection in the mounted state of the support plate in the direction of the shim points and limited by the system mounted on the way is about the the shim when crossing the rail by a rail vehicle as a result of the elasticity of the elastic liner sinks. At the same time can with appropriate Forming by the projection of the support plate a receptacle for be formed the elastic intermediate layer. This is especially true then, if the projection in question at least one sufficient partial length of the circumference of the intermediate layer along its edge or a sufficient number of separate Projections on the support plate is arranged, which is the position the liner.

The Tension of each required to hold down the rail Spring element can also in an inventive System made by placing in the shim one from the top to the bottom of the washer leading through hole is formed by the underside of the clamping screw is pluggable.

Around on the one hand in a simple way a secure hold of the clamping screw to ensure during the tensioning of the spring element and on the other hand, the elastic liner not by a over the underside of the washer protruding screw head can also be loaded on the underside of an inventively designed Shim in the region of the mouth of the through hole be formed a receptacle in the fully assembled state the polygonal, especially hexagonal screw head of the clamping screw sitting.

In order to the seated with her screw head in the receptacle clamping screw also the high torques, which during clamping of the respective spring element can stand up to, without being able to separate Metal elements or the like in the existing plastic Washer must be inserted, beats the invention according to another for the practice important design before that each side surface of the screw head formed on the peripheral wall of the receptacle Attachment surface is assigned. This contact surface extends over a partial length of each associated side surface of the screw head, so that the relevant side surfaces of the screw head in the assembled state supported flat on their respective associated contact surface are.

simultaneously are in this embodiment of the invention, the plant surfaces the peripheral wall spaced from each other, so that between two adjacent contact surfaces each have a recess may be formed in the peripheral wall of the receptacle, in the area in the assembled state no contact between the screw head and the peripheral wall of the receptacle. By such a design The recording is achieved that even under torque load between the load receiving portions of the recording surface contact over which the forces to be absorbed are comparable large area in the recording surrounding sections the shim.

In this way, load peaks are prevented, which occur in conventionally designed recordings, the shape of which corresponds smoothly to the shape of the screw head to be picked up by them. There, due to the inevitable play with which the screw head is seated in the associated receptacle, a narrow line-shaped contact area, on which the entire load is concentrated, regularly results at the edges between the side faces of the screw head. This concentration of force can become so high that the Screw head into the recording surrounding material incorporated and the secure hold of the screw head is no longer guaranteed. Due to the present invention reached flat support of the side surfaces of the screw head this danger no longer occurs.

The provided in a system according to the invention Shim may be based on the model of the prior art their top a footing for the to be fastened Have rail at their in the longitudinal direction of the fastening rail aligned longitudinal sides each support shoulder is limited. In order to tolerances To be able to compensate for the width of the rail foot or additional adjustability of the gauge too allow at least one adapter piece be provided to a in the assembled state between the foot of the to be fastened rail and the respective support shoulder bridge existing distance. For a simple and reliable correct position fixing the adapter piece can be provided on the shim a form element, that in combination with a formed on the adapter piece complementary form a form-fitting Guaranteed hold of the adapter piece on the shim.

Around the rail to be fastened on particularly easy to install and at the same time effective way also against the shim springy elastic support, can on the at the shim existing support surface an elastic intermediate layer be applied. For example, a layer of a elastic molding material sprayed onto the support surface become.

A further minimization of the weight of the shim can thereby be achieved, that the shim viewed in plan view has a constriction in the area of the footprint. The shim has in this embodiment in their mounting position laterally over the rail protruding sections one larger in the longitudinal direction of the rail measured width than in the area located under the rail foot. In this way not only additional weight is saved, but the wider side sections also contribute to one optimized support of the rail against when driving over acting lateral forces at.

The Assembly of the system according to the invention can thereby be simplified, that at least one clip is provided, for mounting one out of the washer, the underneath lying intermediate plate and underlying the intermediate plate Holding plate formed package in preassembled position holds together.

following the invention with reference to an embodiment illustrative drawing explained in more detail. Show it:

1 a system for securing a rail in an exploded view;

2 the system in ready mounted position in plan view;

3 the system in the finished mounted position in a viewed in the longitudinal direction of the rail side view;

4 the system in fully assembled position in a side perspective view;

5 a shim with associated eccentric sleeves in a perspective view from above;

6 the shim with eccentric sleeves inserted therein in a perspective view from below;

7 an eccentric sleeve in a perspective view;

8th a first enlarged detail of the shim in a perspective view from below;

9 a second enlarged section of the shim in a perspective view from below.

The system 1 for fastening a rail S on a solid, here formed by a concrete sleeper, not shown here substrate 2 includes a shim made of a plastic material 3 , one below the shim 3 to be arranged liner 4 made of an elastically yielding material, one below the intermediate layer 4 on the firm ground 2 to be arranged support plate 5 , four eccentric sleeves 6a . 6b . 6c . 6d , which each have a fixing screw serving as a fastening element 7a . 7b . 7c . 7d is assigned, two spring elements 8a . 8b , two adapters 9a . 9b as well as two clamping screws 10a . 10b ,

The existing of a plastic material shim 3 has a bone-like, elongated shape seen in plan view. Their on each one of its narrow sides adjacent outer areas 3a . 3b In this case, have a significantly greater, measured in the direction of the longitudinal extent L of the rail S to be fastened width B, as its central region, wherein the change in the width B from the narrower central region to the adjacent wide lateral regions 3a . 3b one continuous, jump-free course.

In the middle area is on the top O of the shim 3 a standing surface extending in the longitudinal direction L. 3c formed over the respective width B of the middle narrower area of the shim 3 extends and laterally to the narrow sides of the shim 3 through each one shoulder 3d . 3e is limited.

At the footprint 3c associated contact surfaces of the shoulders 3d . 3e is one towards the opposite shoulder 3e . 3d protruding dovetail-like projection 3f educated. On each of these adapter pieces 9a . 9b be set with a complementary shaped recess, if necessary, a distance between the on the stand space 3c set rail foot F of the rail S to bridge and so ensure a secure lateral guidance of the rail S.

In the shoulders 3d . 3e is always close to the stand area 3c and in the middle in relation to the extension of the shoulder in the longitudinal direction L, a passage opening 3g . 3h formed from the top O to the bottom U of the shim 3 leads. Through the passage openings 3g . 3h is from the underside U of the shim 3 each coming from one of the manner of a conventional hexagon screw trained clamping screws 10a . 10b plugged. The screw head 10c the clamping screws 10a . 10b sits in each case in one in the bottom U of the shim 3 formed, in the region of the mouth of the respective passage opening 3g . 3h arranged recording 3i . 3y ,

The pictures 3i . 3y are each from a peripheral wall 3k surround, which is integral with the shim 3 connected is. At her the recordings 3i . 3y each associated peripheral surfaces are on the peripheral walls 3k six each at equal angular intervals around the center of the respective recording 3i . 3y distributed contact surfaces 3l formed, whose in the circumferential direction of the respective recording 3i . 3y measured length La each less than half the length Ls of the side surfaces 10d of the screw head 10c is. Between two adjacent contact surfaces 3l each is a recess 3m in the respective peripheral wall 3k molded, facing the contact surfaces 3l in the peripheral wall 3k flinch. In this case, adjacent to the one is the respective recess 3m each limiting contact surface 3l in each case additionally designed in the manner of a groove relief recess 3n in the peripheral wall 3k molded while the recess 3m to the other limiting contact surface into a relatively flat course.

The regular distribution, the position and the dimensions of the contact surfaces 3l , the recesses 3m and the relief recesses 3n the respective recording 3i . 3y are chosen so that the screw head 10c in ready assembled position ( 8th ) with its side surfaces 10d each at one of the contact surfaces 3l rests and each between two side surfaces 10d existing edges 10e of the screw head 10c in the area of a relief recess 3n is arranged, without contact with the respective peripheral wall 3k to have.

Likewise exists in the area of the recesses 3m no contact between the screw head 10c and the respective peripheral wall 3k , so that alone the contact surfaces 3l during assembly and in practical use on the screw head 10c take effect moments. A cutting of the screw head 10c in the area of its edges 10e in the material of the peripheral wall 3k is prevented in this way as well as their destruction by overloading.

Accordingly, the shim can 3 that when clamping the formed in the manner of a conventional, ω-shaped tension clamp spring elements 8a . 8b easily absorb occurring torques. For clamping the spring elements 8a . 8b These are so on the shim 3 set that their respective assigned clamping screw 10a . 10b with its threaded shaft through the middle loop of the spring element 8a respectively. 8b engages and the free spring arms of the spring element 8a . 8b lie on the rail foot F. Subsequently, by means of a nut screwed onto the threaded shank 12 the middle loop of the spring element 8a . 8b so far against the shim 3 until a sufficient hold-down force is exerted on the rail foot F.

In the area of their corners is in the shim 3 one sleeve opening each 3o formed from the top O to the bottom U of the shim 3 leads.

In each of the four sleeve openings 3o sits one of the one in combination with the material of the shim 3 Well slippery and sufficiently strong material made eccentric sleeves 6a - 6d , These have a passage opening 6e on which eccentric to the center axis Me of the respective eccentric sleeve 6a - 6d is arranged. On the outer peripheral surface of the eccentric sleeves 6a - 6d is in each case an axially parallel to the central axis Me extending, narrow locking projection 6f formed, each extending over the entire height He of the eccentric sleeves 6a - 6d extends. The eccentric sleeves 6a - 6d are designed as hold-down sleeves, to which they at their upper, the top O of the shim 3 associated edge one after the manner of a collar circumferential lead 6g exhibit. In the assembled state is the projection 6g the eccentric sleeves 6a - 6d on the top O of the shim 3 on.

The four sleeve openings 3o are each through a peripheral wall 3p surrounded by the plastic material of the shim 3 is formed. In the peripheral wall 3p are formed at irregular angular intervals α on the type of grooves, axially parallel to the central axis Mh of the respective sleeve opening 3o extending stop marks 3q molded, whose shape is complementary to the shape of the eccentric sleeves 6a - 6d each trained locking projection 6f is.

The rest stops 3q and the sleeve openings 3o are each designed so that their respective associated eccentric sleeve 6a - 6d with her locking projection 6f is positively guided with sliding fit in them so that the rotational position of the eccentric sleeve 6a - 6d in its associated sleeve opening 3o is fixed, but at the same time directed in the direction of the central axis Me relative movement between shim 3 and the respective sleeve 6a - 6d easily possible.

When assembling the system 1 each one of the mounting screws 7a - 7d through the passage opening 6e the respective eccentric sleeve 6a - 6d stuck and in a solid ground 2 embedded plastic dowels 11 screwed. In this way, the fixing screws form 7a - 7d in each case an axis of rotation about which the eccentric sleeve assigned to them 6a - 6d rotatable can. Taking into account the eccentricity of the rotation axis thus created with respect to the central axis Mh of the respective sleeve opening 3o are the angular distances α between the locking marks 3q so dimensioned that with ready mounted shim 3 with each rotational adjustment between two locking marks a transversely to the longitudinal extent of the rail S aligned shift of the shim 3 is accompanied by a magnitude always the same distance. Thus, the angular distances α, for example, be designed so that each rotational adjustment of the eccentric sleeves 6a - 6d the shim 3 for a gauge adjustment shifts by one millimeter.

Around the edge of the shim 3 encircling is a groundbreaking from the bottom U, apron-like projection 3r to the shim 3 formed. The lead 3r serves as a stop for in the direction of the solid ground 2 directed movements, which are the shim 3 performs when the standing on her rail S is driven by a rail vehicle, not shown here.

In the area of the bottom U, not from the sleeve openings 3o with its peripheral wall 3q and not from the recordings 3i . 3y is a stiffening structure 3s in the shim 3 molded, the ribs crossing each other at a right angle 3t and recesses arranged between them 3u are formed. The wells 3u are filled with a lightweight but dimensionally stable molding material T. The molding material T is substantially flush with the free top of the ribs 3t or protrudes with a protrusion of typically at least 2 mm above the top of the ribs so that there are no sharp edges of the ribs 3t stand out more.

To an elastic cushioning of the rail S also directly opposite the shim 3 to accomplish is on the support surface 3c an elastic layer 3v sprayed on, which consists of a permanently elastic plastic. Alternatively, it is also possible the elastic layer 3v through a prefabricated plate of elastic material to form on the support surface 3c placed on and glued to her in particular.

The elastic intermediate layer 4 has a plan view of a shape that of the stiffening structure 3 occupied area corresponds. Accordingly, the stiffening structure covers 3 in the assembled state of the system 1 the liner 4 completely off. The in the wells 3u the stiffening structure 3s Existing Füllstofffüllung T here also ensures under the load of a rail S driving rail vehicle, that the ribs 3t the stiffening structure 3s not in the liner 4 to cut. Instead, the shim is 3 always so large on the elastic liner 4 supported, that permanently optimal spring action is maintained.

The on the solid ground 2 resting thin support plate 5 serves as protection of the elastic intermediate layer against abrasive wear and dirt and ensures a flat bearing surface. To the location of the elastic intermediate layer on the support plate 5 It is on the base plate 3 associated top of the support plate 5 by a projection following the outer shape of the elastic layer 5a a recording formed in the case of fully assembled system 1 the liner 4 sits positively. The lead 5a additionally serves as a stop, through which in the direction of the solid ground 2 directed movements of the shim 3 are limited and excessive compression of the elastic liner 4 is prevented.

The elastic intermediate layer 4 is also protected against excessive compression during assembly, that height He as the Hold-down sleeves designed and in the assembled state on the support plate 5 standing eccentric sleeves 6a - 6d is chosen so that the shim 3 even with firmly tightened mounting screws 7a - 7d only with a defined force against the elastic intermediate layer 4 is pressed. If the force in question is to be very small, then a height He of the eccentric sleeve is selected, that of the thickness of the shim 3 in the area of the sleeve openings 3o plus the thickness of the elastic layer in the relaxed state of installation minus the thickness of the projection 6g equivalent.

α

angular distances

1

system for fastening a rail S

2

underground

3

shim

3a, 3b

outer areas of the base plate 3

3c

Stand surface of the base plate 3

3d, 3e

Shoulders of the base plate 3

3f

head Start

3g, 3h

Through openings

3i, 3y

Recordings of the base plate 3

3k

peripheral wall

3l

contact surface

3m

recess

3n

relief cut

3o

sleeve opening

3p

peripheral wall

3q

Rast brand

3r

head Start

3s

stiffening

3t

rib

3u

deepening

4

elastic liner

5

support plate

5a

head Start

6a-6d

eccentric sleeves

6e

sleeve opening

6f

catch projection

6g

head Start

7a-7d

mounting screws

8a, 8b

spring elements

9a 9b

adapters

10a, 10b

turnbuckles

10c

screw head

10d

Side surface of the screw head 10c

10e

Edge of the screw head 10c

11

Plastic anchors

12

mother

B

respective width of the base plate 3

F

rail

He

height

L

longitudinal direction

me

Central axis of the respective eccentric sleeve 6a - 6d

mh

Central axis of the respective sleeve opening 3o

O

Top of the base plate 3

S

rail

T

molding

U

Bottom of the base plate 3

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 1950347 A2 [0006, 0007]

Claims (14)

System for fastening a rail (S) on a solid foundation ( 2 ), comprising the following elements: a shim made of a plastic material ( 3 ), - one between the shim ( 3 ) and the solid ground ( 2 ) arranged intermediate layer ( 4 ), - one between the intermediate layer ( 4 ) and the underground ( 2 ) arranged support plate ( 5 ), - a spring element ( 8a . 8b ) to hold down the rail to be fastened (S), - a clamping screw ( 10a . 10b ) for bracing the spring element ( 8a . 8b ) against the shim ( 3 ) and - a fastening element ( 7a - 7d ) for fixing the shim ( 3 ) on the solid ground ( 2 ). System according to claim 1, characterized in that in the shim ( 3 ) at least one sleeve opening ( 3o ) is formed in which a hold-down sleeve ( 6a - 6d ) with sliding seat whose height (He) is greater than the thickness of the shim ( 3 ) in the region of its associated sleeve opening ( 3o ) and which has a protrusion protruding from its peripheral surface ( 6g ), which in the assembled state on the top (O) of the shim ( 3 ) rests, and that the fastener ( 7a - 7d ) is intended, through the sleeve opening ( 3o ) the hold-down sleeve ( 6a - 6d ) to be plugged. System according to claim 2, characterized in that the hold-down sleeve as Exzenterhülse ( 6a - 6d ) is formed, that at the sleeve opening ( 3o ) Stop marks ( 3q ) are formed, taking into account the eccentricity of the axis of rotation of the eccentric sleeve ( 6a - 6d ) with respect to the central longitudinal axis (Me) of the sleeve opening ( 3o ) are arranged at such a distance from each other that during a rotational adjustment of the eccentric sleeve ( 6a - 6d ) about its axis of rotation in the sleeve opening ( 3o ) by the locking marks ( 3q ) Rotational positions of the eccentric sleeve ( 6a - 6d ), which correspond to a gradual change in position of the shim ( 3 ) correspond to a defined amount, and that the eccentric sleeve ( 6a - 6d ) one to the latch marks ( 3q ) of the sleeve opening ( 3o ) corresponding form element ( 6f ), over which the in its associated sleeve opening ( 3o ) inserted eccentric sleeve ( 6a - 6d ) positively with in each case one of the latching marks ( 3q ) of the sleeve opening ( 3o ) is coupled. System according to one of the preceding claims, characterized in that in the solid ground ( 2 ) associated underside (U) of the shim ( 3 ) a stiffening structure ( 3s ) formed by ribs ( 3t ) and between them existing depressions ( 3u ), and that depressions ( 3u ) of the stiffening structure ( 3s ) are closed with a filler (T). System according to one of the preceding claims, characterized in that on the underside (U) of the shim ( 3 ) at least one of the bottom (U) facing away projection ( 3r ) is formed, is limited by the system when the system is fully assembled the way by which the shim ( 3 ) when passing over the rail (S) by a rail vehicle as a result of the elasticity of the elastic intermediate layer ( 4 ) sinks. System according to one of the preceding claims, characterized in that on the support plate ( 5 ) in the assembled state of the support plate ( 5 ) in the direction of the shim ( 3 ) leading edge ( 5a ) is formed, is limited by the system when the system is fully assembled the way by which the shim ( 3 ) when passing over the rail (S) by a rail vehicle as a result of the elasticity of the elastic intermediate layer ( 4 ) sinks. System according to claim 6, characterized in that by the projection ( 5a ) of the support plate ( 5 ) a receptacle for the elastic intermediate layer ( 4 ) is formed. System according to one of the preceding claims, characterized in that - in the shim ( 3 ) one from the top (O) to the bottom (U) of the shim ( 3 ) leading through opening ( 3g . 3h ) is formed, through which from the bottom (U) ago the clamping screw ( 10a . 10b ) is pluggable, - that at the bottom (U) of the shim ( 3 ) in the region of the mouth of the passage opening ( 3g . 3h ) a recording ( 3i . 3y ) is formed in the ready assembled state, a multi-edged screw head ( 10c ) of the clamping screw ( 10a . 10b ), and - that each side surface ( 10d ) of the screw head ( 10c ) one on the peripheral wall ( 3r ) of the recording ( 3i . 3y ) formed contact surface ( 3l ) is assigned, which extends over a partial length (La) of the respective side surface ( 10d ) of the screw head ( 10a . 10b ) and on which the relevant side surface ( 10d ) of the screw head ( 10c ) is supported flat in the assembled state, wherein the plant surfaces ( 3l ) of the peripheral wall ( 3r ) are spaced apart from each other and between two adjacent contact surfaces ( 3l ) each have a recess ( 3m ) in the peripheral wall ( 3r ) of the receptacle is formed, in the region in the assembled state, there is no contact between the screw head and the peripheral wall of the receptacle. System according to one of the preceding claims, characterized in that the sub leg plate ( 3 ) has on its upper side a standing surface for the rail (S) to be fastened, which at its longitudinal sides aligned in the longitudinal direction of the rail (S) to be fastened by a respective support shoulder ( 3d . 3e ) is limited. System according to claim 9, characterized in that at least one adapter piece ( 9a . 9b ) is provided to a in the assembled state between the foot (F) of the rail to be fastened (S) and the respective support shoulder ( 3d . 3e ) to bridge existing distance. System according to claim 10, characterized in that the adapter piece ( 9a . 9b ) releasably releasable with their respective associated support shoulder ( 3d . 3e ) can be coupled. System according to one of claims 9 to 11, characterized in that on the footprint ( 3c ) an elastic layer ( 3v ) is applied, on which in the assembled state, the rail (S) is. System according to one of the preceding claims, characterized in that at least one clip is provided, which is suitable for mounting a from the shim ( 3 ), the underlying intermediate plate ( 4 ) and the under the intermediate plate ( 4 ) lying support plate ( 5 ) formed package in pre-assembled position holds together. Fixing a rail (S) formed from a system according to one of the preceding claims ( 1 ).