EP2776626B1 - Undersleeper pad with friction-reducing coating for a track sleeper and track sleeper with such an undersleeper pad - Google Patents
Undersleeper pad with friction-reducing coating for a track sleeper and track sleeper with such an undersleeper pad Download PDFInfo
- Publication number
- EP2776626B1 EP2776626B1 EP12784539.4A EP12784539A EP2776626B1 EP 2776626 B1 EP2776626 B1 EP 2776626B1 EP 12784539 A EP12784539 A EP 12784539A EP 2776626 B1 EP2776626 B1 EP 2776626B1
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- EP
- European Patent Office
- Prior art keywords
- pad
- undersleeper
- coating
- sleeper
- threshold
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/001—Track with ballast
Definitions
- the invention relates to a Schwellenhleohlung of an elastic and especially hard-elastic material for a track bed carried in the ballast track.
- the invention further relates to a system of a track sleeper with such a threshold soling.
- this track threshold is a cross-threshold for a railway or tram track system.
- a threshold soling is known, which is arranged with respect to the installation position of a track threshold on the underside or can be arranged.
- z. B. on the DE 10 2009 038 414 A1 directed.
- An elastic sleeper padding allows adaptation to the ballast bed, resulting in an increase in the wing area and a reduction in the stress on the ballast or ballast grains. Furthermore, the sound transmission is reduced.
- the EP 0 467 863 A1 discloses a rail track damper comprising a layer of elastomeric material having a plurality of openings through which the thickness of the layer is different, whereby a material having different stiffness values can be provided.
- the EP 0 569 867 A1 relates to a rail assembly consisting of a rail track with fasteners, sleepers made of wood, concrete or the like. And the ballast bed on which the thresholds are stored. On the underside of the thresholds, an elastic pad is arranged, which essentially consists of two layers, wherein the layer facing the underside of the sleepers is an elastomeric material, while the layer surrounding the ballast bed is a nonwoven fabric.
- the FR 2 935 399 discloses a sill which is locatable between a concrete sleeper and a railway embankment, the sleeper sole having fibers disposed within the concrete sleeper, and wherein the sleeper sole is of a viscoelastic material.
- the WO 2009/108972 A1 discloses a sill rail for a railway sleeper having at least a first elastic layer and at least a second elastic layer, wherein a reinforcing layer is embedded between the first elastic layer and the second elastic layer, the second elastic layer forming an outer surface of the sill and the reinforcing layer is fibrous material having.
- the FR 2 740 788 relates to a railway sleeper comprising a concrete body having a lower surface for placement on a receptacle, and an upper surface for arranging a track, and having side surfaces provided with a cushioning shroud.
- the EP 1 298 252 A2 discloses a railway sleeper with a concrete body and at least one elastic plastic layer arranged on the underside of the concrete body. Between the concrete body and the at least one elastic plastic layer, a fiberglass layer is arranged, which adheres to the concrete of the concrete body and is connected flat to the at least one elastic plastic layer.
- the EP 0 440 597 relates to a track upper and -unterbau rail-ne vehicles, rails with the rail or medium, or directly, with threshold are releasably connected, wherein the concrete sleeper are each connected to at least two rails and rest over a ballast bed on the ground, the Concrete sleepers have on their acted upon with the ballast bed surfaces at least one coating, which is constructed with rubber-elastic materials and is at least partially adhesively bonded to the surface of the concrete sleeper.
- the threshold soling according to the invention which may be embodied in one piece or possibly also in several pieces, is characterized in that it is provided with a coating at least regionally and in particular over the whole area, by means of which the friction with the ballast grain or with the ballast grains of the ballast bed is reduced.
- the material of the threshold soling, on which the coating is arranged is particularly advantageously homogeneous, d.
- the sleeper padding preferably consists of only two different components, namely the coating and the material of the threshold padding on which the coating is arranged.
- the friction conditions between the sleeper padding and the ballast grains according to the invention are influenced or the friction coefficient between the sleeper padding and the ballast grains is reduced such that the ballast blocks move after the sleepering due to the vibrations introduced by the train passages (or the like) can, what was previously not possible due to the high friction coefficients.
- the friction between the track sill or its Schwellen Cosmeticsohlohlung and the gravel grains is a complex process.
- the invention also provides the potential for reducing manufacturing costs, since as a result of the proposed coating a more cost-effective material and / or a lower soling thickness than hitherto customary can be selected.
- the ratio of the thickness of the coating to the thickness of the threshold anneal is in the range of 0.005 to 0.6, preferably 0.03 to 0.3, and most preferably 0.1 to 0.2.
- the thickness is in this case defined substantially at right angles to the longitudinal extent of the threshold soling or track sleeper and the rail.
- the threshold anneal may have a thickness of about 3 mm to 20 mm, preferably about 5 mm to 12 mm.
- the thickness of the coating is advantageously in the range of about 0.1 mm to 5 mm, advantageously about 0.1 mm to 2 mm.
- the coating is a plastic coating or a metal coating or a composite coating.
- the thickness of a plate material may be between 0.5 mm and 5.0 mm, preferably between 0.8 mm and 3.5 mm, and particularly preferably between 1 mm and 2.5 mm.
- the thickness of a sheet material may be between 0.05 mm and 0.5 mm, preferably between 0.1 mm and 0.35 mm, and more preferably between 0.15 mm and 0.25 mm. As a film comes z. As a coex film into consideration.
- the coating which is in particular in the form of a film, may preferably be made of ultrahigh molecular weight polyethylene (PE-UHMW), polyamide (PA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT).
- a positive connection can, for. B. be a rivet, nail or screw.
- a microforming connection can be produced, for example, in a spraying process or in a multi-component injection molding process. It is therefore preferably provided that the threshold soling according to the invention is designed together with a suitable plastic coating as a multi-component injection-molded part. Further preferably, the coating is vulcanized to the Schwellenhleohlung.
- the metal coating may be a metal foil or a metal sheet (eg of a stainless steel material).
- the metal foil or the metal sheet may, for example, be connected in a form-fitting manner and, in particular, in a materially bonded manner to the material of the threshold soling.
- the thickness of a metal foil may be between 0.05 mm and 0.3 mm.
- the thickness of a metal sheet may be between 0.3 mm and 2.0 mm.
- a fabric coating can, for. B. be formed of a textile material.
- a textile material may, for example, contain natural fibers or synthetic fibers, which are combined in an ordered or disordered manner (random fiber textile).
- the textile material is in particular materially connected to the material of the threshold soling.
- Particularly suitable materials are polyamide (PA) and / or polyester (PE).
- a composite coating may, for. B. be formed of a laminate composite material or fiber composite material. This may be a plate or a foil (for which the above explanations regarding a plastic or hard rubber coating apply analogously).
- the composite material is in particular materially connected to the material of the threshold soling.
- the threshold soling can alternatively or additionally be designed such that its surface is modified or changed by deliberately induced efflorescence.
- a lubricant may already be integrated in the original material of the threshold soling, which preferably diffuses out continuously at or over the surface.
- the material of the threshold annealing, on which the coating is arranged has a Shore A hardness of 40 to 80, preferably 60 to 70.
- the padding is formed of natural rubber (NR), styrene-butadiene rubber (SBR), ethylene-propylene-diene rubber (EPDM), polyurethane (PUR), or a mixture thereof at least in the region where the coating is disposed.
- the material of the soling, on which the coating is arranged can also be foamed, but is particularly preferably not foamed.
- the threshold soling has a modulus of settling in the range of 0.05 N / mm 3 to 0.5 N / mm 3 , preferably 0.1 N / mm 3 to 0.3 N / mm 3 .
- a Schwellenhleohlung is provided which ensures a particularly optimal ratio of compliance (the surface) of the Schwellenhleohlung and low friction to the ground.
- the threshold insole according to the invention is formed substantially flat and / or plate-like and can be fastened to the underside of a track sleeper, such that it covers in particular the entire base area of the relevant threshold base body.
- the threshold soling according to the invention can be designed in the form of a shoe (or cup or cup shape).
- a shoe-like sleeper or threshold shoe
- Such a shoe-like sleeper padding can virtually be slipped over from below over the threshold base body and thus covers both its entire base surface and at least partially the side surfaces.
- the side wall or the lateral sections of the shoe-like sleeper padding are also at least partially provided with a coating according to the preceding and / or following explanations, by which the friction with the Gravel grains is reduced.
- the shoe-like sleeper padding is formed integrally and dimensionally stable.
- the threshold soling can also be designed in several parts. Otherwise, the preceding and following explanations apply analogously.
- a system comprising a threshold base body for a track carried in the ballast bed and a sleeper padding comprising a threshold base body, which is formed in particular from a concrete material, and a threshold soling according to the invention, wherein the track sill and the threshold insole are formed such that the threshold insole, in particular directly or directly, can be arranged or arranged on an underside of the threshold main body.
- the threshold basic body lies directly on the threshold insole or contacted directly or directly without intermediate elements, such as reinforcing plates.
- a sleeper for a track carried in the ballast track system with a threshold base body, which is formed in particular of a concrete material, and a arranged on the underside of the threshold base Sch manleohlung.
- the solution of the problem thus also extends to a sleeper, in particular a cross sleeper, for a railway track carried in a ballast, which is in particular a railway or tram track system.
- the claimed cross sleeper comprises a threshold main body, which is formed in particular from a concrete material, and a threshold filing according to the invention arranged at least on the underside of this threshold main body.
- Fig. 1 shows a total of 100 designated track threshold (cross threshold).
- the track sill 100 includes an approximately cuboid sleeper base 110 supported by a ballast bed 200 having a plurality of ballast grains 201. At the top of the main body 110, two rails 300 are fixed in a manner known per se.
- the track sill 100 is formed with a threshold reinforcement 120, which, preferably solid, made of an elastic and in particular hard-elastic material (such as. Rubber or hard rubber) is formed and arranged on the underside of the threshold base body 120 and in particular also attached thereto.
- a threshold reinforcement 120 which, preferably solid, made of an elastic and in particular hard-elastic material (such as. Rubber or hard rubber) is formed and arranged on the underside of the threshold base body 120 and in particular also attached thereto.
- the threshold reinforcement 120 has a functional coating 130 on its underside or outer side facing away from the threshold base body 110 and facing the ballast grains 201, by which a special ballast contact surface is formed to reduce the effective friction between the bottomed threshold bottom and the ballast grains 201.
- the coating 130 is z.
- a plastic coating, a hard rubber coating, a metal coating, a fabric coating or a composite coating as discussed above.
- the coating 130 leads to improved friction conditions, so that the ballast grains 201 can move successively during operation due to the vibrations introduced by the train passages.
- the aerofoil portion is increased and the local pressure loads caused by individual crushed grains 201 on the solitary threshold underside are reduced, as already explained above.
- damage to the Schwellenhleohlung 120 can be avoided.
- the function of the system of track sleepers, sleeper padding and ballast can be improved.
- the coating 130 may, for example, be formed as a plate or as a film.
- the plate or foil 130 can be held or fastened to the threshold insole 120 in a form-fitting manner, for example by screwing or riveting, and in particular by material bonding, such as by gluing or integral production.
- the sleeper pad 120 including the coating 130 thereon, may be formed as a boot, for which reference is made to the above explanations.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Description
Die Erfindung betrifft eine Schwellenbesohlung aus einem elastischen und insbesondere hartelastischen Material für eine im Schotterbett getragene Gleisschwelle. Die Erfindung betrifft ferner ein System aus einer Gleisschwelle mit einer solchen Schwellenbesohlung. Bei dieser Gleisschwelle handelt es sich insbesondere um eine Querschwelle für eine Eisenbahn- oder Straßenbahngleisanlage.The invention relates to a Schwellenhleohlung of an elastic and especially hard-elastic material for a track bed carried in the ballast track. The invention further relates to a system of a track sleeper with such a threshold soling. In particular, this track threshold is a cross-threshold for a railway or tram track system.
Aus dem Stand der Technik ist eine Schwellenbesohlung bekannt, die bezüglich der Einbaulage einer Gleisschwelle an deren Unterseite angeordnet wird bzw. anordenbar ist. Diesbezüglich wird z. B. auf die
Die
Die
Die
Die
Die
Die
Die
Es hat sich jedoch gezeigt, dass die aus dem Stand der Technik bekannten Schwellenbesohlungen im Betrieb durch spitzkantige Schotterkörner beschädigt werden können, was die Funktion des Systems aus Gleisschwelle, Schwellenbesohlung und Schotterkorn beeinträchtigt und die Nutzungsdauer reduziert.However, it has been found that the prior art threshold solders can be damaged in operation by sharp-edged gravel grains, which compromises the function of the system of sleeper, sleeper and gravel and reduces the useful life.
Es ist daher eine Aufgabe der vorliegenden Erfindung, eine Schwellenbesohlung der eingangs genannten Art anzugeben, die die mit dem Stand der Technik einhergehenden Nachteile nicht oder zumindest nur im verminderten Umfang aufweist.It is therefore an object of the present invention to provide a Schwellenfersohlung of the type mentioned, which does not have the disadvantages associated with the prior art, or at least only to a lesser extent.
Diese Aufgabe wird gelöst von einer erfindungsgemäßen Schwellenbesohlung mit den Merkmalen des Anspruchs 1. Bevorzugte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Schwellenbesohlung ergeben sich aus den abhängigen Ansprüchen.This object is achieved by a threshold soling according to the invention having the features of claim 1. Preferred embodiments and further developments of the inventive threshold soling result from the dependent claims.
Die erfindungsgemäße Schwellenbesohlung, die einstückig oder gegebenenfalls auch mehrstückig ausgebildet sein kann, zeichnet sich dadurch aus, dass diese zumindest bereichsweise und insbesondere vollflächig mit einer Beschichtung versehen ist, durch welche die Reibung mit dem Schotterkorn bzw. mit den Schotterkörnern des Schotterbetts verringert wird. Das Material der Schwellenbesohlung, an welcher die Beschichtung angeordnet ist, ist besonders vorteilhaft homogen ausgebildet, d. h. die Schwellenbesohlung besteht bevorzugt aus nur zwei verschiedenen Komponenten, nämlich der Beschichtung und dem Material der Schwellenbesohlung, an welcher die Beschichtung angeordnet ist.The threshold soling according to the invention, which may be embodied in one piece or possibly also in several pieces, is characterized in that it is provided with a coating at least regionally and in particular over the whole area, by means of which the friction with the ballast grain or with the ballast grains of the ballast bed is reduced. The material of the threshold soling, on which the coating is arranged, is particularly advantageously homogeneous, d. H. the sleeper padding preferably consists of only two different components, namely the coating and the material of the threshold padding on which the coating is arranged.
Durch die reibungsreduzierende Beschichtung werden die zwischen der erfindungsgemäßen Schwellenbesohlung und den Schotterkörnern gegebenen Reibungsverhältnisse derart beeinflusst bzw. der zwischen der Schwellenbesohlung und den Schotterkörnern bestehende Reibungskoeffizient derart verringert, dass sich die Schotterkörner nach der Schwellenverlegung aufgrund der durch die Zugüberfahrten (oder dergleichen) eingebrachten Schwingungen umlegen können, was bislang aufgrund der hohen Reibwerte nicht möglich war. Hierzu ist anzumerken, dass die Reibung zwischen der Gleisschwelle bzw. deren Schwellenbesohlung und den Schotterkörnern ein komplexer Vorgang ist.Due to the friction-reducing coating, the friction conditions between the sleeper padding and the ballast grains according to the invention are influenced or the friction coefficient between the sleeper padding and the ballast grains is reduced such that the ballast blocks move after the sleepering due to the vibrations introduced by the train passages (or the like) can, what was previously not possible due to the high friction coefficients. It should be noted that the friction between the track sill or its Schwellenigungsohlohlung and the gravel grains is a complex process.
Durch das Umlegen der Schotterkörner und insbesondere der spitzkantigen Schotterkörner wird der Tragflächenanteil erhöht und die durch einzelne Schotterkörner verursachten lokalen Druckbelastungen auf die Schwellenbesohlung, die zu Beschädigungen führen können, werden reduziert. Durch den erhöhten Tragflächenanteil reduziert sich ferner auch die Gesamteinsenkung der Gleisschwelle in das Schotterbett. Dadurch verlängert sich die Standzeit bzw. die Nutzungsdauer des Systems aus Gleisschwelle, Schwellenbesohlung und Schotterkorn. Trotz der erfindungsgemäß vorgeschlagenen Beschichtung bleibt die Funktionsfähigkeit der Schwellenbesohlung im vollen Umfang erhalten oder kann mit den erfindungsgemäßen Maßnahmen sogar noch optimiert werden.By transferring the gravel grains and in particular the sharp-edged gravel grains of the wing area is increased and by individual Gravel grains are causing localized pressure loads on the sleeper pad, which can cause damage. Due to the increased wing area also reduces the total reduction of the track threshold in the ballast bed. This prolongs the service life or the service life of the system consisting of track sleeper, sleeper padding and gravel grain. Despite the coating proposed according to the invention, the functionality of the threshold soling remains intact or can even be optimized with the measures according to the invention.
Die erfindungsgemäße Schwellenbesohlung bietet auch das Potential zur Reduktion der Herstellungskosten, da infolge der vorgeschlagenen Beschichtung ein kostengünstigeres Material und/oder eine geringere Besohlungsdicke als bislang üblich gewählt werden kann.The invention also provides the potential for reducing manufacturing costs, since as a result of the proposed coating a more cost-effective material and / or a lower soling thickness than hitherto customary can be selected.
Vorteilhafterweise beträgt das Verhältnis der Dicke der Beschichtung zur Dicke der Schwellenbesohlung im Bereich von 0,005 bis 0,6, vorzugsweise von 0,03 bis 0,3 und besonders vorzugsweise von 0,1 bis 0,2. Die Dicke wird hierbei im wesentlichen rechtwinklig zur Längserstreckung der Schwellenbesohlung bzw. Gleisschwelle sowie der Schiene definiert. Die Schwellenbesohlung kann eine Dicke von etwa 3 mm bis 20 mm, vorzugsweise etwa 5 mm bis 12 mm, aufweisen. Die Dicke der Beschichtung liegt vorteilhafterweise im Bereich von etwa 0,1 mm bis 5 mm, vorteilhafterweise etwa 0,1 mm bis 2 mm.Advantageously, the ratio of the thickness of the coating to the thickness of the threshold anneal is in the range of 0.005 to 0.6, preferably 0.03 to 0.3, and most preferably 0.1 to 0.2. The thickness is in this case defined substantially at right angles to the longitudinal extent of the threshold soling or track sleeper and the rail. The threshold anneal may have a thickness of about 3 mm to 20 mm, preferably about 5 mm to 12 mm. The thickness of the coating is advantageously in the range of about 0.1 mm to 5 mm, advantageously about 0.1 mm to 2 mm.
Erfindungsgemäß ist vorgesehen, dass es sich bei der Beschichtung um eine Kunststoffbeschichtung um eine Metallbeschichtung oder um eine Verbundbeschichtung handelt.According to the invention, it is provided that the coating is a plastic coating or a metal coating or a composite coating.
Bei der Kunststoffbeschichtung (wobei diese auch aus einem synthetischen Hartgummimaterial bestehen kann) handelt es sich erfindungsgemäß um eine Platte oder um eine Folie, die bspw.
formschlüssig und insbesondere stoffschlüssig mit dem Material der Schwellenbesohlung verbunden
und auf diese Weise befestigt ist. Die Dicke eines Plattenmaterials kann zwischen 0,5 mm und 5,0 mm, vorzugsweise zwischen 0,8 mm und 3,5 mm und besonders vorzugsweise zwischen 1 mm und 2,5 mm betragen. Die Dicke eines Folienmaterials kann zwischen 0,05 mm und 0,5 mm, vorzugsweise zwischen 0,1 mm und 0,35 mm und besonders vorzugsweise zwischen 0,15 mm und 0,25 mm betragen. Als Folie kommt z. B. eine Coex-Folie in Betracht. Die insbesondere als Folie ausgebildete Beschichtung kann vorzugsweise aus Ultrahochmolekularem Polyethylen (PE-UHMW), Polyamid (PA), Polyethylenterephthalat (PET), Polybutylenterephthalat (PBT). Eine Formschlussverbindung kann z. B. eine Niet-, Nagel- oder Schraubverbindung sein.When the plastic coating (which may also consist of a synthetic hard rubber material) is according to the invention to a plate or a film, the example.
positively and in particular materially connected to the material of the Schwellenhleohlung
and attached in this way. The thickness of a plate material may be between 0.5 mm and 5.0 mm, preferably between 0.8 mm and 3.5 mm, and particularly preferably between 1 mm and 2.5 mm. The thickness of a sheet material may be between 0.05 mm and 0.5 mm, preferably between 0.1 mm and 0.35 mm, and more preferably between 0.15 mm and 0.25 mm. As a film comes z. As a coex film into consideration. The coating, which is in particular in the form of a film, may preferably be made of ultrahigh molecular weight polyethylene (PE-UHMW), polyamide (PA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT). A positive connection can, for. B. be a rivet, nail or screw.
Unter einer stoffschlüssigen Verbindung wird z. B. eine durch Verklebung und/oder durch Mikroformschluss herbeigeführte und insbesondere nicht lösbare Verbindung verstanden. Ein Mikroformschluss kann bspw. in einem Aufspritzverfahren oder in einem Mehrkomponenten-Spritzgießverfahren erzeugt werden. Bevorzugt ist daher vorgesehen, dass die erfindungsgemäße Schwellenbesohlung zusammen mit einer geeigneten Kunststoffbeschichtung als Mehrkomponenten-Spritzgussteil ausgebildet ist. Weiterhin bevorzugt ist die Beschichtung an der Schwellenbesohlung anvulkanisiert.Under a cohesive connection z. Example, a brought about by bonding and / or by microforming and in particular unsoluble compound understood. A microforming connection can be produced, for example, in a spraying process or in a multi-component injection molding process. It is therefore preferably provided that the threshold soling according to the invention is designed together with a suitable plastic coating as a multi-component injection-molded part. Further preferably, the coating is vulcanized to the Schwellenhleohlung.
Bei der Metallbeschichtung kann es sich um eine Metallfolie oder um ein Metallblech (bspw. aus einem Edelstahlmaterial) handeln. Die Metallfolie oder das Metallblech kann bspw. formschlüssig und insbesondere stoffschlüssig mit dem Material der Schwellenbesohlung verbunden sein. Die Dicke einer Metallfolie kann zwischen 0,05 mm und 0,3 mm betragen. Die Dicke eines Metallblechs kann zwischen 0,3 mm und 2,0 mm betragen.The metal coating may be a metal foil or a metal sheet (eg of a stainless steel material). The metal foil or the metal sheet may, for example, be connected in a form-fitting manner and, in particular, in a materially bonded manner to the material of the threshold soling. The thickness of a metal foil may be between 0.05 mm and 0.3 mm. The thickness of a metal sheet may be between 0.3 mm and 2.0 mm.
Eine Gewebebeschichtung kann z. B. aus einem Textilmaterial gebildet sein. Ein derartiges Textilmaterial kann bspw. Naturfasern oder Kunstfasern enthalten, die geordnet oder ungeordnet (Wirrfasertextil) zusammengefasst sind. Das Textilmaterial ist insbesondere stoffschlüssig mit dem Material der Schwellenbesohlung verbunden. Als Materialien eignen sich insbesondere Polyamid (PA) und /oder Polyester (PE). Die reibungsreduzierende Wirkung ergibt sich u. a. dadurch, dass die Gewebebeschichtung das Eindrücken spitzkantiger Schotterkörner in die Schwellenbesohlung verhindert oder zumindest reduziert. Dieser Effekt kann für die anderen Beschichtungen gleichermaßen zutreffen.A fabric coating can, for. B. be formed of a textile material. Such a textile material may, for example, contain natural fibers or synthetic fibers, which are combined in an ordered or disordered manner (random fiber textile). The textile material is in particular materially connected to the material of the threshold soling. Particularly suitable materials are polyamide (PA) and / or polyester (PE). The friction-reducing effect results inter alia, by the fact that the fabric coating prevents or at least reduces the impressions of sharp-edged gravel grains into the threshold soling. This effect may apply equally to the other coatings.
Eine Verbundbeschichtung kann z. B. aus einem Laminat-Verbundmaterial oder Faser-Verbundmaterial gebildet sein. Hierbei kann es sich um eine Platte oder um eine Folie handeln (wofür die obenstehenden Erläuterungen hinsichtlich einer Kunststoff- oder Hartgummibeschichtung analog gelten). Das Verbundmaterial ist insbesondere stoffschlüssig mit dem Material der Schwellenbesohlung verbunden.A composite coating may, for. B. be formed of a laminate composite material or fiber composite material. This may be a plate or a foil (for which the above explanations regarding a plastic or hard rubber coating apply analogously). The composite material is in particular materially connected to the material of the threshold soling.
Zweckmäßigerweise kann die Schwellenbesohlung alternativ oder zusätzlich derart ausgebildet sein, dass deren Oberfläche durch gezielt herbeigeführte Ausblühungen modifiziert bzw. verändert wird. Hierbei kann ein Gleitmittel im ursprünglichen Material der Schwellenbesohlung bereits integriert sein, welches vorzugsweise kontinuierlich an bzw. über die Oberfläche ausdiffundiert.Expediently, the threshold soling can alternatively or additionally be designed such that its surface is modified or changed by deliberately induced efflorescence. In this case, a lubricant may already be integrated in the original material of the threshold soling, which preferably diffuses out continuously at or over the surface.
Vorteilhafterweise weist das Material der Schwellenbesohlung, an welcher die Beschichtung angeordnet ist, eine Shore A Härte von 40 bis 80, vorzugsweise 60 bis 70, auf. Bevorzugterweise ist die Besohlung zumindest in dem Bereich, an welchem die Beschichtung angeordnet ist, aus Naturkautschuk (NR), StyrolButadien-Kautschuk (SBR), Ethylen-Propylen-Dien-Kautschuk (EPDM),Polyurethan (PUR) oder einer Mischung derselben ausgebildet. Das Material der Besohlung, an welcher die Beschichtung angeordnet ist, kann darüber hinaus geschäumt ausgebildet sein, ist jedoch besonders bevorzugt nicht geschäumt.Advantageously, the material of the threshold annealing, on which the coating is arranged, has a Shore A hardness of 40 to 80, preferably 60 to 70. Preferably, the padding is formed of natural rubber (NR), styrene-butadiene rubber (SBR), ethylene-propylene-diene rubber (EPDM), polyurethane (PUR), or a mixture thereof at least in the region where the coating is disposed. The material of the soling, on which the coating is arranged, can also be foamed, but is particularly preferably not foamed.
Vorzugsweise weist die Schwellenbesohlung ein Bettungsmodul im Bereich von 0,05 N/mm3 bis 0,5 N/mm3, vorzugsweise 0,1 N/mm3 bis 0,3 N/mm3, auf. Hierdurch wird eine Schwellenbesohlung vorgesehen, die ein besonders optimales Verhältnis aus Nachgiebigkeit (der Oberfläche) der Schwellenbesohlung und geringer Reibung zum Untergrund gewährleistet.Preferably, the threshold soling has a modulus of settling in the range of 0.05 N / mm 3 to 0.5 N / mm 3 , preferably 0.1 N / mm 3 to 0.3 N / mm 3 . As a result, a Schwellenhleohlung is provided which ensures a particularly optimal ratio of compliance (the surface) of the Schwellenhleohlung and low friction to the ground.
Bevorzugt ist vorgesehen, dass die erfindungsgemäße Schwellenbesohlung im Wesentlichen eben und/oder plattenartig ausgebildet ist und an der Unterseite einer Gleisschwelle befestigbar ist, derart, dass diese insbesondere die gesamte Grundfläche des betreffenden Schwellengrundkörpers überdeckt.It is preferably provided that the threshold insole according to the invention is formed substantially flat and / or plate-like and can be fastened to the underside of a track sleeper, such that it covers in particular the entire base area of the relevant threshold base body.
Alternativ kann die erfindungsgemäße Schwellenbesohlung schuhartig (bzw. becher- bzw. schalen- bzw. napfförmig) ausgebildet sein. Eine solche schuhartige Schwellenbesohlung (bzw. Schwellenschuh) weist einen Boden und eine Seitenwandung, wobei es sich insbesondere um eine umlaufende Seitenwandung handelt, auf, wie in der
Bevorzugt ist vorgesehen, dass die Seitenwandung bzw. die seitlichen Abschnitte der schuhartigen Schwellenbesohlung (auf der vom Schwellengrundkörper abgewandten und dem Schotterkorn zugewandten Seite) ebenfalls zumindest bereichsweise mit einer Beschichtung gemäß den vorausgehenden und/oder nachfolgenden Erläuterungen versehen sind, durch welche die Reibung mit den Schotterkörnern verringert wird. Insbesondere ist vorgesehen, dass die schuhartige Schwellenbesohlung einstückig und formstabil ausgebildet ist. Alternativ kann die Schwellenbesohlung auch mehrteilig ausgebildet sein. Im Übrigen gelten analog die vorausgehenden und nachfolgenden Erläuterungen.It is preferably provided that the side wall or the lateral sections of the shoe-like sleeper padding (on the side facing away from the threshold base body and the gravel grain side) are also at least partially provided with a coating according to the preceding and / or following explanations, by which the friction with the Gravel grains is reduced. In particular, it is provided that the shoe-like sleeper padding is formed integrally and dimensionally stable. Alternatively, the threshold soling can also be designed in several parts. Otherwise, the preceding and following explanations apply analogously.
Weiterhin erfindungsgemäß vorgesehen ist ein System aus einem Schwellengrundkörper für ein im Schotterbett getragenes Gleis und einer Schwellenbesohlung, umfassend
einen Schwellengrundkörper, der insbesondere aus einem Betonmaterial ausgebildet ist, und eine erfindungsgemäße Schwellenbesohlung, wobei die Gleisschwelle und die Schwellenbesohlung derart ausgebildet sind, dass die Schwellenbesohlung, insbesondere unmittelbar bzw. direkt, an einer Unterseite des Schwellengrundkörpers anordenbar oder angeordnet ist. In anderen Worten liegt somit der Schwellengrundkörper direkt auf der Schwellenbesohlung auf bzw. kontaktiert diese direkt bzw. unmittelbar ohne zwischenliegende Elemente, wie Verstärkungsplatten. Vorgesehen ist also eine Gleisschwelle für eine im Schotterbett getragene Gleisanlage, mit einem Schwellengrundkörper, der insbesondere aus einem Betonmaterial gebildet ist, und einer an der Unterseite des Schwellengrundkörpers angeordneten Schwellenbesohlung. Die Lösung der Aufgabe erstreckt sich somit auch auf eine Gleisschwelle, wie insbesondere eine Querschwelle, für eine im Schotterbett getragene Gleisanlage, wobei es sich insbesondere um eine Eisenbahn- oder Straßenbahngleisanlage handelt. Die beanspruchte Querschwelle umfasst einen Schwellengrundkörper, der insbesondere aus einem Betonmaterial gebildet ist, und eine zumindest an der Unterseite dieses Schwellengrundkörpers angeordnete erfindungsgemäße Schwellenbesohlung.Further provided according to the invention is a system comprising a threshold base body for a track carried in the ballast bed and a sleeper padding comprising
a threshold base body, which is formed in particular from a concrete material, and a threshold soling according to the invention, wherein the track sill and the threshold insole are formed such that the threshold insole, in particular directly or directly, can be arranged or arranged on an underside of the threshold main body. In other words, therefore, the threshold basic body lies directly on the threshold insole or contacted directly or directly without intermediate elements, such as reinforcing plates. So provided is a sleeper for a track carried in the ballast track system, with a threshold base body, which is formed in particular of a concrete material, and a arranged on the underside of the threshold base Schießleohlung. The solution of the problem thus also extends to a sleeper, in particular a cross sleeper, for a railway track carried in a ballast, which is in particular a railway or tram track system. The claimed cross sleeper comprises a threshold main body, which is formed in particular from a concrete material, and a threshold filing according to the invention arranged at least on the underside of this threshold main body.
Die Erfindung wird nachfolgend anhand der einzigen Figur beispielhaft und in nicht einschränkender Weise näher erläutert. Die
- Fig. 1
- zeigt in einer schematischen Seiten-/Schnittansicht eine Gleisschwelle mit einer erfindungsgemäßen Schwellenbesohlung.
- Fig. 1
- shows in a schematic side / sectional view of a sill with a Schwellenigungsohlung invention.
Gummi oder Hartgummi) gebildet und an der Unterseite des Schwellengrundkörpers 120 angeordnet und insbesondere auch an diesem befestigt ist.
Rubber or hard rubber) is formed and arranged on the underside of the
Erfindungsgemäß weist die Schwellenbesohlung 120 an ihrer vom Schwellengrundkörper 110 abgewandten und den Schotterkörnern 201 zugewandten Unterseite bzw. Außenseite eine funktionale Beschichtung 130 auf, durch die eine spezielle Schotterkontaktoberfläche ausgebildet ist, um die wirksame Reibung zwischen der besohlten Schwellenunterseite und den Schotterkörnern 201 zu verringern. Bei der Beschichtung 130 handelt es sich z. B. um eine Kunststoffbeschichtung, eine Hartgummibeschichtung, eine Metallbeschichtung, eine Gewebebeschichtung oder eine Verbundbeschichtung, wie obenstehend erläutert.According to the invention, the
Die Beschichtung 130 führt zu verbesserten Reibungsverhältnissen, so dass sich die Schotterkörner 201 im Betrieb aufgrund der durch die Zugüberfahrten eingebrachten Schwingungen sukzessive umlegen können. Dadurch wird der Tragflächenanteil erhöht und die durch einzelne Schotterkörner 201 verursachten lokalen Druckbelastungen auf die besohlte Schwellenunterseite werden abgebaut, wie bereits obenstehend erläutert. Hierdurch können Beschädigungen an der Schwellenbesohlung 120 vermieden werden. Ferner kann die Funktion des Systems aus Gleisschwelle, Schwellenbesohlung und Schotterkorn verbessert werden.The
Die Beschichtung 130 kann bspw. als Platte oder als Folie ausgebildet sein. Die Platte oder Folie 130 kann formschlüssig, bspw. durch Verschraubung oder Vernietung, und insbesondere stoffschlüssig, wie bspw. durch Verklebung oder einstückige Herstellung, an der Schwellenbesohlung 120 gehalten bzw. befestigt sein.The
Die Schwellenbesohlung 120 einschließlich der daran befindlichen Beschichtung 130 kann schuhartig bzw. als Schwellenschuh ausgebildet sein, wozu auf die diesbezüglichen obenstehenden Erläuterungen verwiesen wird.The
Claims (12)
- Undersleeper pad (120) for a track sleeper (100) supported in the ballast bed (200), wherein the undersleeper pad (120) is formed from an elastic, and in particular hard elastic, material, wherein the undersleeper pad (120) is designed to be arrangeable at least on the underside of the track sleeper (100), and wherein the undersleeper pad (120) is provided, at least in certain regions, with a coating (130) by means of which the friction with the ballast grains (201) of the ballast bed (200) is reduced, characterized in that the coating (130) takes the form of a metal coating, a composite coating or a plastic coating, wherein the plastic coating is a sheet or film, and in that the material of the pad on which the coating (130) is arranged has a Shore A hardness of 40 to 80.
- Undersleeper pad (120) according to Claim 1, wherein the ratio of the thickness of the coating (130) to the thickness of the undersleeper pad (120) is in the range from 0.03 to 0.3, and preferably from 0.1 to 0.2.
- Undersleeper pad (120) according to Claim 1, wherein the coating (130) takes the form of a hard rubber coating.
- Undersleeper pad (120) according to Claim 3, wherein the plastic coating or the hard rubber coating takes the form of a sheet or a film which is fastened in an integrally bonded manner.
- Undersleeper pad (120) according to Claim 1, wherein the metal coating takes the form of a metal foil or a metal sheet which is fastened in particular in an integrally bonded manner.
- Undersleeper pad (120) according to Claim 1, wherein, as coating, a woven fabric coating consisting of a textile material is fastened in an integrally bonded manner.
- Undersleeper pad (120) according to Claim 6, wherein the textile material can contain natural fibres or synthetic fibres which are combined in an ordered or unordered manner.
- Undersleeper pad (120) according to Claim 1, wherein the composite coating is formed from a laminate composite material or a fibre composite material which is fastened in particular in an integrally bonded manner.
- Undersleeper pad (120) according to one of the preceding claims, wherein the material of the pad on which the coating (130) is arranged has a Shore A hardness of 60 to 70.
- Undersleeper pad (120) according to one of the preceding claims, wherein it is of planar design.
- Undersleeper pad (120) according to one of Claims 1 to 6, wherein it is of shoe-like design and has a side wall, wherein the side wall is likewise provided, at least in certain regions, with the coating (130) by means of which the friction with the ballast grains (201) is reduced.
- System consisting of a sleeper basic body (110) for a track (300) supported in the ballast bed and of an undersleeper pad (120), comprising a sleeper basic body (110) which is formed in particular from a concrete material, and an undersleeper pad (120) according to one of the preceding claims, wherein the track sleeper (100) and the undersleeper pad (120) are designed in such a way that the undersleeper pad (120) is arranged, in particular directly, on an underside of the sleeper basic body (110).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011086084A DE102011086084A1 (en) | 2011-11-10 | 2011-11-10 | Threshold insole with friction-reducing coating for a track sill as well as track sill with such a threshold insole |
| PCT/EP2012/071358 WO2013068259A1 (en) | 2011-11-10 | 2012-10-29 | Undersleeper pad with friction-reducing coating for a track sleeper and track sleeper with such an undersleeper pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2776626A1 EP2776626A1 (en) | 2014-09-17 |
| EP2776626B1 true EP2776626B1 (en) | 2018-12-19 |
Family
ID=47177966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12784539.4A Not-in-force EP2776626B1 (en) | 2011-11-10 | 2012-10-29 | Undersleeper pad with friction-reducing coating for a track sleeper and track sleeper with such an undersleeper pad |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2776626B1 (en) |
| DE (1) | DE102011086084A1 (en) |
| WO (1) | WO2013068259A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT514671B1 (en) * | 2013-07-26 | 2016-10-15 | Getzner Werkstoffe Holding Gmbh | Rillenfüllkörper |
| DE102014112326A1 (en) * | 2014-08-27 | 2016-03-03 | GKT Gummi- und Kunststofftechnik Fürstenwalde GmbH | Sill and method for making a Schwellensohle |
| DE102016101011A1 (en) * | 2016-01-21 | 2017-07-27 | Semperit Ag Holding | sleeper |
| CN106436494B (en) * | 2016-10-27 | 2018-03-20 | 杭州唐普徕实业有限公司 | Suitable for the combination vibration-damping ballast of urban track traffic high-performance vibration reduction demand |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT405197B (en) * | 1990-01-30 | 1999-06-25 | Porr Allg Bauges | Track and track substructure for rail-bound vehicles |
| IT1249285B (en) * | 1990-07-19 | 1995-02-22 | Fip Ind | ANTI-VIBRATION ELASTIC INSULATION, PARTICULARLY DESIGNED FOR RAILWAY TRACKS |
| ES2094960T5 (en) * | 1992-05-09 | 2002-01-01 | Phoenix Ag | CONSTRUCTION OF A RAIL. |
| FR2740788B1 (en) * | 1995-11-07 | 1998-01-23 | Vagneux Traverses Beton | RAILWAY CROSSING AND COMPONENTS OF SUCH A CROSSING |
| BE1014318A6 (en) * | 2001-07-26 | 2003-08-05 | Vanhonacker Patrick | SUPPORT DEVICE FOR RAIL RAIL ballasted. |
| DE20215101U1 (en) * | 2001-10-01 | 2003-02-27 | Rst Rail Systems And Technolog | Threshold with coating on the underside |
| AT506529B1 (en) * | 2008-03-06 | 2010-05-15 | Getzner Werkstoffe Holding Gmbh | THRESHOLD SOLE |
| FR2935399B1 (en) * | 2008-09-02 | 2012-10-12 | Sateba Systeme Vagneux | VISCOELASTIC SOLE, ASSEMBLY COMPRISING A BLOCK AND AN ABOVE SOLE, AND CORRESPONDING MANUFACTURING METHODS. |
| DE102009000316A1 (en) | 2009-01-20 | 2010-07-22 | Semperit Ag Holding | Threshold shoe for sleepers |
| DE102009038414A1 (en) | 2009-08-21 | 2011-03-03 | Plica, Peter, Dr.-Ing. | Elastic insole for concrete sleepers |
-
2011
- 2011-11-10 DE DE102011086084A patent/DE102011086084A1/en not_active Withdrawn
-
2012
- 2012-10-29 EP EP12784539.4A patent/EP2776626B1/en not_active Not-in-force
- 2012-10-29 WO PCT/EP2012/071358 patent/WO2013068259A1/en active Application Filing
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011086084A1 (en) | 2013-05-16 |
| WO2013068259A1 (en) | 2013-05-16 |
| EP2776626A1 (en) | 2014-09-17 |
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