EP2998437A1 - Semelle sous traverse et dispositif et procede de production d'une semelle sous traverse - Google Patents

Semelle sous traverse et dispositif et procede de production d'une semelle sous traverse Download PDF

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Publication number
EP2998437A1
EP2998437A1 EP15181332.6A EP15181332A EP2998437A1 EP 2998437 A1 EP2998437 A1 EP 2998437A1 EP 15181332 A EP15181332 A EP 15181332A EP 2998437 A1 EP2998437 A1 EP 2998437A1
Authority
EP
European Patent Office
Prior art keywords
layer
sill
sleeper
sole
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP15181332.6A
Other languages
German (de)
English (en)
Inventor
Detlef Fiedler
Eberhard Prof. Dr.-Ing. Wegener
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gkt Gummi- und Kunststofftechnik Fuerstenwalde GmbH
Original Assignee
Gkt Gummi- und Kunststofftechnik Fuerstenwalde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gkt Gummi- und Kunststofftechnik Fuerstenwalde GmbH filed Critical Gkt Gummi- und Kunststofftechnik Fuerstenwalde GmbH
Publication of EP2998437A1 publication Critical patent/EP2998437A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
    • E01B1/005—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with sleeper shoes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/46—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from different materials

Definitions

  • the present invention relates to a threshold sole for a railway sleeper, in particular a sleeper sole with a carrier layer made of elastic polymer material and a connecting layer connected to the carrier layer for connecting the sleeper sole with a railway sleeper.
  • a sill As Schwellensohle or Schwellenhleohlung an arranged on a railroad sleeper below the elastic layer is called. According to the purpose of use, a sill must have sufficient resistance to breakage and shearing. Furthermore, a resistance to weathering, such as moisture or low temperatures, against aging and against flames is necessary. In addition, the sill soles must not be damaged by penetrating points or edges of crushed stone of a ballast bed in which a concrete sleeper is supported.
  • the gravel underneath can basically be spared and the track stability can be increased. Furthermore, the elastic storage of railway sleepers leads to a reduction of body and airborne noise and reduces the overall maintenance costs of the rail system.
  • a threshold sole can be placed in the production process of a railway sleepers when concreting a body of the railway sleeper in the not yet hardened concrete. With a suitable surface structure of the sill sole, this results in a positive and non-positive connection of the sill sole with the concrete sleeper.
  • the threshold sole can be subsequently glued to the underside of the concrete sleeper.
  • the sill In the event that the sill for joining with the railway sleeper is applied to the not yet hardened concrete of the railway sleeper, the sill usually includes on the side, which is in contact with the railway sleeper comes, a spatially modified surface structure, which is suitable to penetrate into the not yet hardened concrete of the railway sleeper. In this way, the mentioned positive and positive connection between the Schwellensohle and the railway sleeper can be made. It is known to form such a surface structure in one piece with the elastic layer of the threshold sole, for example in the form of knobs or the like. As a result, recesses or depressions in the surface of the threshold sole can be formed, in which the not yet hardened concrete can penetrate.
  • the height of the protrusions or the depth of the recesses then determine the maximum penetration depth for the concrete.
  • a bonding layer between an elastic layer of the sill and the railway sleeper, a scrim layer or the like.
  • a fiber layer forms cavities in a suitable manner, in which not yet hardened concrete can penetrate.
  • Such a bonding layer is usually adhered to an elastic layer of the threshold sole. It is also possible to press the fiber layer, in a separate process step, into a still flowable elastic layer.
  • sill soles are relatively complex, in particular as a rule, in addition to the step of producing the elastic support layer, a step of producing a connection structure, for example the aforementioned nubs, or a step of applying a separate connection layer, for example, said random fiber layer on which elastic carrier layer is necessary, either by gluing or by pressing into a still flowable carrier layer.
  • Object of the present invention is therefore to propose a simple and inexpensive method for producing a threshold sole for a railway sleeper and a corresponding threshold sole.
  • a preferred embodiment of a threshold sole for a railway sleeper comprises a carrier layer of elastic polymer material and a connecting layer connected to the carrier layer for connecting the sleeper sole to a railway sleeper.
  • the bonding layer is generally set up to allow concrete of a concrete railway sleeper, which has not yet hardened, to penetrate into the bonding layer, and is further configured to allow flowable polymer material to penetrate into the bonding layer.
  • the connecting layer in the region of a first surface of the connecting layer, for joining the threshold soleplate with the railway sleeper, is adapted to penetrate into a concrete of the railway sleeper which has not yet set so that the concrete in turn can penetrate into the connecting layer to a predetermined penetration depth.
  • the connecting layer in the region of the first surface comprises a suitable spatial surface structuring.
  • the bonding layer is further configured to allow the flow of the polymer material to penetrate into the bonding layer to a predetermined penetration depth in the area of a second surface of the bonding layer opposite the first surface.
  • the connecting layer in the region of the second surface also comprises a suitable spatial surface structuring.
  • the threshold sole is characterized in that the carrier layer is formed as a back-injection layer of the connection layer.
  • the connection between the connection layer and the carrier layer is produced by the carrier layer being injection-molded onto the rear side of the connection layer.
  • the term "back-injection” means that the molded-on Side of a molded part in the final state on the rear side of the molding is arranged.
  • the first surface of the tie layer which is adapted to contact the concrete sill, is considered to be the front of the sill sole.
  • the back-injection layer ie the carrier layer, forms the rear side of the threshold sole and is accordingly arranged on the rear side of the connection layer.
  • a method for producing such a threshold sole with a carrier layer made of elastic polymer material and a connecting layer connected to the carrier layer for connecting the sill plate to a railway sleeper therefore comprises, on the one hand, the step of providing the above-described tie layer. Furthermore, the method comprises the step essential to the invention of back-injection of the bonding layer with the carrier layer.
  • the back side of the bonding layer is molded on the rear side with the elastic polymer material forming the backing layer.
  • the carrier layer penetrates, preferably over the entire surface, into the bonding layer up to a predetermined penetration depth.
  • the present method allows a simple and inexpensive manufacturing of the threshold sole. This is especially true, since a separate step of applying, in particular the sticking or indentation, the bonding layer on the carrier layer and a subsequent punching of the threshold sole can be omitted.
  • the threshold sole i. the backing layer together with the bonding layer can be produced according to the invention in one process step.
  • the bonding layer in the step of back injection for example, as a roll, be performed on a suitably equipped injection tool over.
  • the connecting layer can be inserted in the step of the back injection, for example as an insert, in a suitably configured injection mold.
  • the step of back injection is preferably carried out as part of a thermoplastic injection molding process.
  • a connection of the carrier layer to the connecting layer is already produced simultaneously in the step of producing the carrier layer.
  • a suitably produced Schwellensohle has in addition to the advantage that their production can be done effectively and inexpensively, on other benefits. Characterized in that the material of the carrier layer penetrates in the step of the back injection under easy-to-control conditions usually uniform, full surface and up to a predetermined penetration into the bonding layer, there is a positive and non-positive connection of the carrier layer with the connecting layer, which is very stable and very even. Unevenness, for example, which occurs when a connecting layer is applied manually or mechanically to a carrier layer, e.g. can occur when connecting the layers via an adhesion promoter or when pressed into the carrier layer, can be avoided according to the invention.
  • the connecting layer when injecting the connecting layer with the carrier layer, due to the high injection pressure of, for example, about 2000 bar, not only a penetration of the material of the carrier layer in the connecting layer - ie Form and force closure - but in conjunction with the correspondingly high temperatures also at the same time a welding of the materials, ie the elastic polymer material of the carrier layer and based on at least a similar material basis material of the connecting layer, carried out - ie a material connection.
  • the connection between the bonding layer and the backing layer is even more stable and durable than, for example, in the case that the bonding layer is merely pressed into a still flowable backing layer.
  • the improved nature of the compound is clearly visible, at least at the microscopic level.
  • the sill sole is produced by means of an injection molding process, i. As injection molding, is produced, there are many other advantages over the prior art.
  • the threshold sole can be produced in a production step as a three-dimensional injection-molded part. While conventional sill soles, which are produced by extrusion and subsequent blanking, apart from a substantially constant thickness in the z-direction, are present as two-dimensional objects, which can be designed in terms of their shape in the x and y direction, injection molded parts can be completely three-dimensional ie In particular, with variable surface structure in the z direction can be generated. This makes it possible to provide the threshold sole with comparatively fine and complex three-dimensional surface structures (depressions, protrusions).
  • Recesses and / or protrusions in the threshold sole preferably in the z-direction, ie, as structuring of one of the two surfaces of the flat-shaped soleplate, can also be used for information coding, ie in particular for inscription of the threshold sole (eg with regard to production date, material, identification number, etc.), can be produced and used in a simple manner.
  • a preferred shape of the side edge of the sill with a step-shaped bevel which will be described in more detail below, can be made by injection molding simple, effective and accurately dimensioned.
  • a transponder or the like can be embedded. This may alternatively or in addition to a label information about the threshold sole - contactlessly readable and / or programmable - store, such. Manufacturing and embedding date, maintenance parameters and the like.
  • a sill with hinterspritzter connection layer in the injection molding process can be made significantly less time consuming than by extrusion and then placing the compound layer. This results in significant cost advantages in the production.
  • both the carrier layer and the connecting layer are provided on the same material basis, for example as propylene-bonded materials.
  • the two layers are also welded in the step of back injection, in addition to the force and form closure obtained, whereby a material bond is achieved, which further enhances the connection between the layers.
  • the complete sill sole, ie carrier layer including bonding layer is completely recyclable and can be returned to the recycling cycle, also for the production of high-quality products.
  • the inventive method is not only effective and inexpensive, but also environmentally friendly. The latter also applies because in the production of the sleeper sole in the injection molding process, with the exception of the cut when cutting the tie layer, no waste is produced. When punching a carrier layer which has been produced by extrusion, this is not true.
  • the elastic polymer material of which the carrier layer is formed comprises a thermoplastic material.
  • the tie layer may comprise a fibrous structure.
  • the fiber structure may be disordered, such as a random fiber structure.
  • the fibrous structure may also be ordered, such as a fabric.
  • a felt and / or a nonwoven layer can be used as the bonding layer.
  • both the tie layer e.g. a random fiber layer
  • the carrier layer on the same material basis.
  • the carrier layer and the connecting layer are each made of materials of the same material base, which are adapted to be welded together under the influence of pressure and heat.
  • the support layer of the threshold sole at the laterally encircling edge of the carrier layer at least one Comprise positioning element.
  • a positioning element is preferably formed in the form of a projection. The positioning element serves to position the sill sole in a concrete sill mold box when connecting the sill sole to the railway sill.
  • the support layer on the laterally encircling edge can be formed, at least in sections, in the direction of the surface of the support layer facing away from the connecting layer, in the form of a terrace or staircase. It has been found that such a shape of the sill sole, in comparison with conventional sill soles in plate form, i. having a rectangular cross-section, due to the surface enlargement achieved by the step-shaped beveling, leads to improved frost and deafness resistance.
  • a preferred embodiment of a concrete track sill comprises a sill sole described above.
  • the sill sole is connected by means of the bonding layer with the concrete material of the concrete railway sleeper, as already stated above.
  • FIG. 1 and 2 a preferred embodiment of a threshold sole 10 of a railway sleeper is shown.
  • FIG. 1 shows a plan view of a threshold sole 10, which is made half-sided with respect to the concrete sleeper length. That is, at a railway sleeper then two such half-side sills 10 are attached. It is also possible to produce sleeper pads that occupy the entire length of a railway sleeper.
  • the sill 10 includes a backing layer 20 and a tie layer 30 bonded to the backing layer 20.
  • the tie layer 30 is back-injected with the backing layer 20, i. the carrier layer 20 is present as a back-injection layer of the connection layer 30.
  • the connecting layer 30 is injection-molded in behind with the carrier layer 20
  • the rear side of the connecting layer 30 is injection-molded with the polymer material forming the carrier layer 20.
  • the carrier layer 20 is formed and at the same time, in the same method step, connected to the connection layer 30.
  • the rear side of the connecting layer 30 is considered to be that side of the connecting layer 30 which is opposite to the side which comes into contact with the railway sleeper for connecting the threshold sole 10 to the railway sleeper 100, i. in the not yet set concrete of the railway sleeper 100 is launched.
  • the injection-molding of the bonding layer 30 with the carrier layer 20 can take place, for example, in such a way that the bonding layer 30, preferably as a roll, is guided past an injection tool and back-injected.
  • the connection layer 30, preferably in the form of an insert can be inserted into an injection mold for injection molding.
  • the injection molding of the connecting layer 30, that is, the injection molding of the carrier layer 20 to the back of the connecting layer 30, takes place as a rule over the entire surface.
  • the material of the carrier layer 20 penetrates, as in FIG. 2 shown, according to a predetermined penetration depth d1 in the connecting layer 30 a.
  • the bonding layer 30 is configured to allow flowable polymer material to penetrate into the bonding layer. The result is a positive and positive connection between the carrier layer 20 and compound layer 30.
  • a welding of the carrier layer 20 with the connection layer 30 arise, ie a material connection.
  • tie layer 30 and the backing layer 20 Suitable materials and arrangements for forming the tie layer 30 and the backing layer 20 will be described in detail below.
  • the connecting layer 30 is further adapted to penetrate into the not yet hardened concrete of a concrete sleeper 100 in the region of a first surface, which is opposite to the carrier layer 20, when the threshold sole 10 is placed on the railway sleeper for connecting the same to the concrete railway sleeper.
  • the not yet connected concrete penetrates into the connecting layer 30 according to a predetermined penetration depth d2 (cf. FIG. 3 ). After setting of the concrete, this results in a positive and shear strength connection between the concrete of the railway sleeper 100 and the threshold sole 10th
  • FIG. 3 shows a concrete railway sleeper 100 with a arranged in the manner described above sole plate 10, wherein the railway sleeper 100 is embedded together with the sill 10 in a ballast bed 200.
  • the threshold sole 10 comprises positioning elements 50 (cf. Fig. 1 ).
  • the positioning elements are, as well as in FIG. 2 represented, arranged on the carrier layer 10.
  • the positioning elements 50 are formed integrally with the carrier layer 20.
  • a positioning element 50 forms a projection which protrudes substantially perpendicularly from the carrier layer.
  • the positioning elements 50 serve to clearly position the sleeper sole 10 in a concrete sleeper mold box when connecting the sleeper sole 10 to the railway sleeper 100.
  • the support layer 20 is formed on the laterally peripheral edge in the direction of the connecting layer 30 facing away from the surface terraced or staircase-shaped bevelled.
  • a better weather resistance in particular a achieved better frost and dew resistance.
  • the reason for this is the increased surface area resulting from the bevel shown.
  • the Schwellensohle reduces the risk of damage to the threshold sole, in particular a risk of partial tearing of the threshold sole of the railway sleeper, when plugging the ballast of the ballast bed, in which the railway sleeper is embedded.
  • the connecting layer 30 is designed such that it can produce a positive and non-positive connection with the not yet set concrete of a railway sleeper 100; namely, by the connecting layer 30 is placed in the not yet hardened concrete of the railway sleeper 100, concrete penetrates to a predetermined penetration depth d2 in the connecting layer 30 and then sets.
  • connection layer 30 may comprise a fiber structure or be formed as a fiber structure layer. Such a fiber structure is suitable for producing a stable connection to the concrete.
  • the tie layer 30 may comprise an ordered fibrous structure, such as a woven fabric.
  • the connection layer 30 may comprise a disordered fiber structure, for example a random fiber structure.
  • a random fiber structure generally comprises disordered fibers of a fiber structure, which may be interwoven, swirled or confused.
  • Suitable layers are, for example, felt or nonwoven layers, geotextile layers, glass fiber trades or carbon fiber trades or suitable mixtures of the materials mentioned by way of example. Such materials are environmentally friendly and offer good weather resistance.
  • materials suitable for producing the fiber structure are used on the same material basis, which are also used for the production of the carrier layer, and which are specified more precisely below by way of example. The materials are arranged such that in the step of the back injection of the bonding layer with the carrier layer, a welding of the two Materials, ie a material bond between the bonding layer and backing layer is achieved.
  • the tie layer 30 may comprise a metal mesh or an expanded metal mat.
  • the connecting layer 30 may also be mat-like and, for example, have bedding elements, such as gravel or split. Such litter elements may protrude at least partially from the main plane of such a connection layer 30 and thereby form a spatially structured surface which serves as a contact surface for connection to the railway sleeper.
  • the carrier layer 20 comprises an elastic, thermally deformable polymer material.
  • materials are used which can be easily and inexpensively injected back.
  • the backing layer 30 may include, for example, one or more thermoplastic elastomers (TPE), NR (natural rubber, natural rubber), SBR (styrene-butadiene rubber), EPDM (ethylene-propylene-diene monomer), NBR (nitrile-butadiene rubber), EVA (Ethylene vinyl acetate) or SEBS (styrene-ethylene-butylene-styrene).
  • TPE thermoplastic elastomers
  • NR natural rubber, natural rubber
  • SBR styrene-butadiene rubber
  • EPDM ethylene-propylene-diene monomer
  • NBR nitrile-butadiene rubber
  • EVA Ethylene vinyl acetate
  • SEBS styrene-ethylene-butylene-styrene
  • the elastic polymer material may comprise at least one filler and / or at least one additive.
  • the polymer material may alternatively or additionally be accompanied by at least one filler and / or at least one additive.
  • a filler rubber recycling material rubber granules, rubber dust or rubber fibers may be provided, for example. Mixtures of at least two such materials can also be used as filler.
  • an additive for example talc, wood flour, one or more mineral flours, metal powder, stone powder or rock wool may be provided, as well as any suitable mixtures of such or similar materials.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP15181332.6A 2014-08-27 2015-08-18 Semelle sous traverse et dispositif et procede de production d'une semelle sous traverse Withdrawn EP2998437A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014112326.3A DE102014112326A1 (de) 2014-08-27 2014-08-27 Schwellensohle und Verfahren zur Herstellung einer Schwellensohle

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EP2998437A1 true EP2998437A1 (fr) 2016-03-23

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EP15181332.6A Withdrawn EP2998437A1 (fr) 2014-08-27 2015-08-18 Semelle sous traverse et dispositif et procede de production d'une semelle sous traverse

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DE (1) DE102014112326A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT523977A1 (de) * 2020-07-02 2022-01-15 Getzner Werkstoffe Holding Gmbh Verfahren zur Herstellung von Bauteilen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU209419U1 (ru) * 2021-10-22 2022-03-16 Акционерное общество "БетЭлТранс" Железобетонная шпала с упругой подшпальной прокладкой

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445378A2 (fr) * 2003-02-05 2004-08-11 RST-Rail Systems and Technologies GmbH Traverse avec revêtement sur le dessous et test d'arrachement d'un tel revêtement
DE102004011610A1 (de) * 2004-03-10 2005-09-29 Spreepolymer Gleistechnik Gmbh Verfahren zur Herstellung eines Verbundsystems zwischen Beton und einem hochpolymeren elastischen Material sowie ein nach diesem Verfahren hergestelltes Verbindungsmittel und dessen Verwendung
US20120091287A1 (en) * 2009-12-30 2012-04-19 Torben Djerf Structure for railroad ties having data acquisition, processing and transmission means
WO2012139142A1 (fr) * 2011-04-15 2012-10-18 Getzner Werkstoffe Holding Gmbh Traverse de chemin de fer
DE102011086084A1 (de) * 2011-11-10 2013-05-16 Semperit Ag Holding Schwellenbesohlung mit reibungsreduzierender Beschichtung für eine Gleisschwelle sowie Gleisschwelle mit einer solchen Schwellenbesohlung

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DK1298252T4 (da) * 2001-10-01 2011-09-05 Rst Rail Systems And Technologies Gmbh Jernbanesvelle med belægning på undersiden
AT505180B1 (de) * 2007-04-06 2009-03-15 Semperit Ag Holding Belagsmaterial zur direkten anbindung an ein betonbauteil
RS53765B1 (en) * 2010-03-12 2015-06-30 Rst-Rail Systems And Technologies Gmbh CONCRETE ELEMENT WITH PLASTIC TILE LOWER
AT12923U1 (de) * 2011-04-15 2013-02-15 Getzner Werkstoffe Holding Gmbh Bahnschwelle
DE102013209495B4 (de) * 2013-05-22 2017-02-16 GKT Gummi- und Kunststofftechnik Fürstenwalde GmbH Schwellensohle für eine Bahnschwelle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1445378A2 (fr) * 2003-02-05 2004-08-11 RST-Rail Systems and Technologies GmbH Traverse avec revêtement sur le dessous et test d'arrachement d'un tel revêtement
DE102004011610A1 (de) * 2004-03-10 2005-09-29 Spreepolymer Gleistechnik Gmbh Verfahren zur Herstellung eines Verbundsystems zwischen Beton und einem hochpolymeren elastischen Material sowie ein nach diesem Verfahren hergestelltes Verbindungsmittel und dessen Verwendung
US20120091287A1 (en) * 2009-12-30 2012-04-19 Torben Djerf Structure for railroad ties having data acquisition, processing and transmission means
WO2012139142A1 (fr) * 2011-04-15 2012-10-18 Getzner Werkstoffe Holding Gmbh Traverse de chemin de fer
DE102011086084A1 (de) * 2011-11-10 2013-05-16 Semperit Ag Holding Schwellenbesohlung mit reibungsreduzierender Beschichtung für eine Gleisschwelle sowie Gleisschwelle mit einer solchen Schwellenbesohlung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT523977A1 (de) * 2020-07-02 2022-01-15 Getzner Werkstoffe Holding Gmbh Verfahren zur Herstellung von Bauteilen

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