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WO2008101269A1 - Procédé de réalisation d'une semelle pour traverse sur un corps de traverse et traverse - Google Patents

Procédé de réalisation d'une semelle pour traverse sur un corps de traverse et traverse Download PDF

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Publication number
WO2008101269A1
WO2008101269A1 PCT/AT2008/000058 AT2008000058W WO2008101269A1 WO 2008101269 A1 WO2008101269 A1 WO 2008101269A1 AT 2008000058 W AT2008000058 W AT 2008000058W WO 2008101269 A1 WO2008101269 A1 WO 2008101269A1
Authority
WO
WIPO (PCT)
Prior art keywords
threshold
foam
plastic foam
raw material
sleeper
Prior art date
Application number
PCT/AT2008/000058
Other languages
German (de)
English (en)
Inventor
Hermann Gruber
Original Assignee
Ssl-Schwellenwerk Und Steuerungstechnik Linz 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 Ssl-Schwellenwerk Und Steuerungstechnik Linz Gmbh filed Critical Ssl-Schwellenwerk Und Steuerungstechnik Linz Gmbh
Priority to EP08706028A priority Critical patent/EP2126214A1/fr
Publication of WO2008101269A1 publication Critical patent/WO2008101269A1/fr

Links

Classifications

    • 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 invention relates to a method for producing a threshold soling of a threshold at least in regions on at least one in installation position of the threshold down on a ballast bed or a concrete surface facing surface on which optionally at least one further layer is disposed, and a threshold with a threshold body, the one , in installation position of the threshold in the direction down on a ballast bed or a concrete surface facing surface on which optionally a layer, eg a nonwoven layer, is arranged, wherein at least on this surface at least partially a threshold soling is arranged.
  • Concrete sleepers are provided with a so-called soles, because otherwise the gravel grains of a ballast bed formed below would touch the concrete sleepers in the installed state only selectively, so it comes at these contact surfaces by rail vehicles to large local loads.
  • the use of threshold solders can reduce the compressive stress of the ballast because the contact area is increased and the ballast grains can press into the sleeper reinforcement.
  • a sleeper pad usually, as a sleeper pad an elastomer mat is used. To avoid detachment from the threshold, it can be glued to the threshold.
  • threshold shoes are known, which is pulled over the edges of the thresholds.
  • DE 02 15 101 U describes 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 this plastic layer, a fiberglass layer is arranged, which adheres to the concrete of the concrete body and is connected flat to the plastic layer. The fibers of this intermediate layer are used to achieve mechanical anchoring to the concrete sleeper via a microforming connection.
  • DE 10 2004 011 610 A describes a method for producing a composite system between concrete and a high polymer elastic material. This is provided by injection molding or by pressing with a separately prepared geometric surface modification as an original form, which is formed as a knob-shaped and / or rib-shaped elevations. After cooling the master mold, the nub- and / or rib-shaped elevations are shaped with a hot-forming die with slightly pressing pressure into mushroom-shaped and / or T-shaped and / or bent-over elevations. This gives the elevations in the upper area a larger diameter.
  • This object is achieved by forming the sleeper padding from a plastic foam, wherein a raw material for the plastic foam is applied to the at least one surface of the sleeper and then foamed onto the surface of the foam, or independently by a threshold in which the Schwellenhleohlung is formed from a plastic foam, which is at least partially adherent to the threshold body.
  • the threshold soling is generated directly on the threshold, so it does not require separate production of a mat, and that no additional precautions must be taken for the connection with the threshold, since the Adphosi- width of the foam is sufficient to To provide a sufficiently high adhesive strength at least in some areas of the surface of the threshold.
  • in situ foaming is also achieved that surface inaccuracies of the threshold, for example, as a result of air pockets during the production of a concrete sleeper, can be compensated.
  • the threshold insulation on site on a construction site, wherein optionally the unevenness of the substrate can be automatically taken into account, whereby the available for the transmission of power in the ballast bed surface further increased and thus the burden of the ballast bed can be further reduced .
  • the adhesiveness of the foam can be used to at least partially connect the ballast of the ballast bed with the sill via the plastic foam during foaming, whereby the positional stability of the threshold can be increased.
  • the soling of the threshold according to the invention may also be formed as a threshold shoe by the foam is generated not only on the lower surface of the threshold body but also on the side surfaces of the threshold body.
  • the foam is formed as a so-called two-component (2K) foam, d. H. it is made from two components that react with each other.
  • 2K two-component
  • it is thus possible to influence the hardness of the threshold soling by changing the mixing ratio and, as a consequence, also to easily adapt the load capacity of the threshold soling to different load cases.
  • it can also be used to increase the reaction time, which can simplify the handling of the system.
  • the components may be a polyol and an isocyanate to produce a polyurethane foam. It is thus possible to increase the mechanical properties of the threshold soling, e.g. Hardness, Young's modulus, etc., to be varied in a wide range, e.g. the number of compounds between the molecules can be easily varied via a different number of isocyanuric groups or hydroxyl groups.
  • the threshold soling e.g. Hardness, Young's modulus, etc.
  • the foam is foamed to an integral foam.
  • An integral foam is known to be characterized in that its density changes over the course of the cross section.
  • the density of this foam starting from the surface of the sleeper body in the direction repellent, ie in the direction of the ballast bed on which the finished threshold is placed, increases, so that the foam in the ballast bed the Penetration of the ballast opposes a greater resistance, whereas in the region of the surface of the sleeper body, a higher elasticity is possible, whereby the sound insulation properties of the Schwellenhleohlung can be improved by forming a spring-mass system.
  • the seal decreases in the indicated direction, just to the opposite effect, namely the pebble when the penetration is facilitated, for example, in curves where the surface pressures and shearing stresses are higher. Due to the deeper penetration, the positional stability of the threshold can be improved.
  • the density of the foam increases starting from the two surfaces of the foam layer in the direction of a core layer of the foam. Another advantage is that the integral foam can have a closed surface.
  • the raw material for the plastic foam can be applied directly to the at least one surface of the threshold body, so there are no intermediate layers as known from the prior art for the preparation of the connection threshold / Besohlung required.
  • a primer e.g. its so-called primer, for example based on polyurethane or based on silanes, or generally based on dilute synthetic resins, is applied.
  • a reinforcing layer is arranged so that it is enclosed by the foaming of the raw material in the finished plastic foam.
  • This reinforcing layer can be arranged directly adjacent to the surface of the sleeper body, but it is preferably arranged at least partially spaced from this surface, whereby on the one hand the adhesion of the Schwellenhleohlung by a larger surface available between soles and threshold - in comparison to the variant with direct contact - improves, and on the other hand, the effect of the reinforcement layer in the insole is better to advantage.
  • This reinforcing layer may be bonded to, in particular anchored within, the skin prior to application of the foam raw material, thereby contributing to the adhesion of the soling to the sleeper body, particularly where the reinforcement Layer is arranged spaced from the surface, and is thus anchored in the foam over a large area by the foaming.
  • the reinforcing layer can be anchored for example in holes in the sleeper body by frictional engagement or by gluing. It is also possible that, when the sleeper body is cast from concrete, this reinforcing layer is partially concreted in - in the manner of a reinforcement.
  • fibers and / or threads which are mixed into the raw material for the foam and thus distributed in the finished plastic foam.
  • fibers and / or threads e.g. Metal fibers, for example of steel, aluminum, brass, etc., glass fibers, plastic fibers, e.g. Fibers made of polyethylene or polypropylene, polyamide fibers (Kevlar ®), graphite fibers, or mixtures of different materials can be used.
  • the fibers may be present as staple fibers or twisted into filaments. It is also possible that the fibers and / or threads are in the form of fabrics, e.g. be used with canvas or twill weave or Atlasitati, knitted fabrics, etc.
  • At least one further layer can be applied to the raw material and bonded to the foam by foaming, so that a multi-layer structure is formed, wherein preferably a material is used for this further layer, which is different from the plastic foam. It can thus be formed a Schwellenhleohlung whose mechanical and acoustic properties can be adjusted as needed.
  • the at least one surface of the threshold which is provided with the plastic foam roughened before applying the raw material and / or provided with at least one recess, whereby a larger surface for the connection is available or it becomes possible to anchor the plastic foam in addition to the adhesive bond also mechanically in the concrete.
  • the threshold body in the region of the surface at least one
  • Figure 1 shows a section of a track section with soled thresholds in cross section in a ballast bed.
  • Fig. 2 shows a variant of a solitary threshold with a reinforcing layer anchored in the sleeper body
  • FIG. 3 shows a variant embodiment of a solitary sleeper with a reinforcing loop reinforcement reinforced by fibers
  • FIG. 5 shows a threshold in cross-section, in which the threshold insole is formed by an integral foam
  • FIG. 6 shows a cross section through a solitary threshold, wherein a further layer is arranged on the lower surface of the threshold sole;
  • Fig. 7 shows a variant of a solitary threshold.
  • Fig. 1 shows a section of a track section 1. Shown are in cross section two sleepers 2, on which a track 3 in the usual way - as known from the prior art - is arranged.
  • the sleepers 2 are partially embedded in a ballast bed 4, as is also already known from the prior art.
  • a ballast bed 4 a concrete surface, as known per se, be present as a substructure.
  • the sleepers 2 comprise a threshold body 5, on the lower surface 6, ie that threshold surface 7 of the threshold body 5, which faces the ballast bed 4 in the laid state of the threshold 2, a threshold reinforcement 7.
  • said threshold reinforcement 7 is produced from a plastic foam.
  • the threshold body 5 consists in this embodiment of concrete. Likewise, the threshold body 5 but also from other materials, such as wood or the like. Exist.
  • the sleeper body 5 may also be multi-layered, e.g. have a fleece or textile layer.
  • the threshold bodies 5 can be embodied as simple sleepers 2 or as double-crossing sleepers, Y-sleepers, sleepers, crosshead sleepers, etc. Furthermore, the concrete sleepers may be biased, e.g. for laying on a concrete surface.
  • the threshold soling 7, ie the plastic foam, is produced directly on the threshold body 5 by applying a foamable raw material for the plastic foam to the surface 6 of the threshold body 5 and then foaming this raw material.
  • the threshold body can comprise a layer on this surface, so that therefore the surface for the plastic foam is formed by the surface of this layer of the threshold body 5.
  • This layer may be, for example, a nonwoven layer or fabric layer, which is at least partially shaken, for example, in the concrete of a concrete sleeper.
  • the foaming can for example be done by a so-called free foaming, for which no mold is used. This results in a Schwellenhleohlung 7, which may have an irregular shape - viewed in cross section.
  • the threshold soling 7 does not necessarily have to be rectangular in cross-section, as shown in FIG.
  • the threshold body 2 is made of concrete.
  • the mold walls are provided with a release agent, so that during demolding the threshold soling 7 is not damaged by adhesion to these mold walls in the edge region, or demolding is generally facilitated.
  • the foaming can be done without pressure or under pressure, at least approximately smooth surfaces of the foam being achieved by applying pressure.
  • foaming under pressure it may be advantageous that the raw material for the plastic foam, a pore-forming agent or blowing agent - in addition to water in the case of polyurethane foams - is added to avoid the formation of small pores.
  • the raw material for the threshold soling 7 is preferably one which has sufficiently high adhesive properties so that the ready-foamed plastic foam adheres directly to the surface 6 of the threshold of the threshold body 5, in particular the concrete sleeper.
  • a raw material can also be used a so-called one-component or two-component plastic foam.
  • the foaming takes place directly after the application of the raw material from the respective container.
  • a mixture must be prepared from the two components which subsequently foams, if appropriate with the addition of a foaming auxiliary. It can be varied accordingly by varying the mixing ratio, the properties of the plastic foam.
  • a two-component embodiment of the raw material by a polyol and an isocyanate may be for the production of a polyurethane foam which foams with the moisture (water), for example, humidity, as a foaming aid to the finished polyurethane foam.
  • a polyurethane foam which foams with the moisture (water), for example, humidity, as a foaming aid to the finished polyurethane foam.
  • polystyrene resin for example, a polyether or a polyester polyol may be used, as this example are available under the name Lupranol® ® or Lupraphen ® by the company. BASF.
  • the polyester polyols may be aliphatic or aromatic in nature.
  • isocyanate for example, a toluene diisocyanate (TDI) or a Methylenphenyliso- cyanat (MDI) or a Methylendicyclohexylisocyanat (HMDI) or a Hexamethylendiiso- cyanat (HDI) can be used.
  • TDI toluene diisocyanate
  • MDI Methylenphenyliso- cyanat
  • HMDI Methylendicyclohexylisocyanat
  • HDI Hexamethylendiiso- cyanat
  • the two components polyol and isocyanate may e.g. in a ratio selected from a range with a lower limit of 1: 1 and an upper limit of 2: 1 mixed together.
  • the mixing ratio polyol to isocyanate may also be selected from a range with a lower limit of 100: 60 and an upper limit of 100: 40.
  • the threshold insole 7 can also be made of a polyolefin foam, e.g. a polyethylene foam, polystyrene foam, Polyisocyanuratschaum, in particular fexibilinstrument with polyether polyols, or other soft and medium soft foams.
  • a polyolefin foam e.g. a polyethylene foam, polystyrene foam, Polyisocyanuratschaum, in particular fexibilinstrument with polyether polyols, or other soft and medium soft foams.
  • a fiber reinforcement short and / or long fibers
  • the surface 6 itself by appropriate pre-treatment, for example thawing, whereby a larger surface area can be provided for the adhesion.
  • thawing it is possible to produce depressions in the surface, so that an additional mechanical, non-positive anchoring of the plastic foam to the surface 6 is also made possible.
  • the raw material for the plastic foam can be applied on the one hand in the case of a concrete threshold on the still wet concrete, with better adhesion can be achieved if previously a primer layer, such as a primer layer or a Vlis slaughter is arranged.
  • a primer layer such as a primer layer or a Vlis slaughter
  • threshold body 5 itself from concrete and let it set so far that its surface 6 has already hardened. In this case, there is little risk of air cushioning between threshold heel 7 and sleeper body 5.
  • the plastic foam itself can be formed in the context of the invention both open-celled and with closed pores.
  • the open-celledness may impart greater elasticity to the sleeper pad 7, so that the gravel grains of the ballast bed 4 are facilitated from entering the sleeper pad 7.
  • a closed-cell design it is possible, for example, that the water absorption of the threshold soling 7 is reduced and thus the property spectrum of the threshold soling 7 is at least approximately constant over the period of use.
  • the sleeper pad 7 is multi-layered, i. is made of two different plastic foams, for example, the closed-cell layer on the ballast bed 4 facing surface of an open-cell plastic foam, which is connected directly to the threshold body 5.
  • the threshold soling 7 is in a layer thickness selected from a range with a lower limit of 2 mm and an upper limit of 30 mm, in particular selected from a range with a lower limit of 5 mm and an upper limit of 15 mm, produced.
  • this layer thickness is to be interpreted so that it means the average layer thickness, so there may be deviations to larger or smaller values of the layer thickness.
  • Larger layer thicknesses are in particular in the case of training "threshold shoe" or thresholds for placement on hard - different from gravel - substructures, such as concrete, made to improve the effect of the suspension, which in the case of a ballast partially exercised by this becomes.
  • a plastic foam for the threshold soling 7 is preferably prepared, which has a hardness selected from a range with a lower limit of 0.01 N / mm 3 and an upper limit of 2 N / mm 3 , in particular selected from a range with a lower limit of 0.3 N / mm 3 and an upper limit of 1 N / mm 3, an indentation hardness of the plastic foam may in particular be selected from a range with a lower limit of 15 kN / mm and an upper limit of 250 kN / mm , in particular be selected from a range with a lower limit of 35 kN / mm and an upper limit of 70 kN / mm.
  • Fig. 2 shows a variant of an inventive threshold 2 again in cross section.
  • a reinforcing layer 8 is provided in the plastic foam of the threshold soling 7.
  • This reinforcing layer 8 may for example consist of a grid of metal or plastic or a reinforcement, also made of metal or plastic, for example steel.
  • this reinforcing layer 8 is anchored in the sleeper body 5 via end extensions 9.
  • this reinforcing layer 8 - viewed in cross section - bow-shaped, i. approximately at least approximately U-shaped execute, wherein the Endfort instruments 9 protrude into the threshold body 5, in particular already during the manufacture of the threshold body 5 are concreted with.
  • these Endfortaries 9 can be taken in a variant wood threshold in the threshold body 5.
  • the foaming layer 8 is embedded in this by the foaming of the plastic foam for the Schwellenhleohlung.
  • the reinforcing layer 9 for example, from woven or knitted fabrics or through full-surface layers.
  • this amplification layer 8 is not anchored in Schwellenkö ⁇ er 5, that is, for example, only on the surface 6 (Fig. 1) of the threshold body 5 is placed and fixed by the foaming of the plastic foam in this position.
  • FIG. 3 Another variant for reinforcing the threshold soling 7, i. Fig. 3. This is the gain and thus the change in the mechanical properties of the plastic foam via threads 10 and fibers, as already stated above.
  • the threads 10 or fibers can be sprinkled onto the surface 6 of the threshold body 5 and then the raw material can be applied to the plastic foam on these threads. It is also possible that the threads 10 and
  • Fibers are already added to the raw material for the plastic foam, for example according to the so-called LFI process (Long Fiber Injection).
  • the threads 10 or fibers are arranged distributed over the cross section of the plastic foam of the threshold soling 7 in this.
  • the threads 10 or fibers may have a length selected from a range with a lower limit of 10 mm and an upper limit of 150 mm, in particular from a range with a lower limit of 50 mm and an upper limit of 100 mm.
  • FIG. 4 Another variant for improving the adhesion of the threshold soling 7, i. of the plastic foam on the Schwellenkö ⁇ er 5 shows Fig. 4. In this variant is in
  • Sill body 5 at least one recess 11 - preferably several - provided in the surface 6. Due to the foaming of the raw material for the plastic foam of the threshold soling 7 this is allowed to penetrate into this recess 11 and at least approximately fill this cavity thus formed.
  • the recesses 11 may be the longitudinal extension of the Schwellengro ⁇ ers 5 following formed in this; It is also possible for these recesses 11 to extend in the direction of the track 3 (FIG. 1) or to be formed diagonally or at an angle to these directions.
  • the recesses 11 can be channel-like or channel-shaped, or at least one, preferably a plurality of recesses 11, to be arranged only in sections in the surface 6. Moreover, it is possible for these recesses 11 to be provided with undercuts in the region of the surface 6, so that the recesses 11 expand - as viewed in cross-section - so that a mechanically improved anchoring of the threshold insole 7 in the threshold body 5 can be achieved.
  • the threshold reinforcement 7 is formed by an integral foam.
  • the integral foam is in particular designed such that it has relatively large pores in the region of the surface 6 of the threshold body 5. The pore size then decreases in the direction of a surface 12 of the threshold reinforcement 7, which in the installed state of the threshold 2 faces the ballast bed 4, so that in the region of the surface 12 pores with a very small diameter are formed.
  • this surface 12 is preferably formed with a closed skin.
  • the raw material for the plastic foam may also contain other auxiliaries or components, such as e.g. Catalysts for increasing the reaction rate, e.g. Amines or organic tin compounds, UV absorbers, dyes, antimicrobials, anti-aging agents, etc ..
  • auxiliaries or components such as e.g. Catalysts for increasing the reaction rate, e.g. Amines or organic tin compounds, UV absorbers, dyes, antimicrobials, anti-aging agents, etc ..
  • the manufacture of the threshold soling 7 can be carried out, for example, by the so-called RIM process (reaction injection molding) or the RRIM process (reinforced RIM).
  • the outwardly facing surface of the threshold insole 7 may be formed both with a closed skin and open-celled.
  • a further layer 13 is arranged on the surface 12 of the threshold reinforcement 7.
  • this layer is placed on the raw material for the plastic foam during the production of the threshold soling 7, so that this layer 13 is connected to the plastic foam by foaming. So there are no further measures in this embodiment for the connection of the further layer 13 with the plastic foam or Schwellenhleohlung 7 required.
  • this further layer 13 is held at least partially spaced from the surface 6 of the threshold body 5 during the foaming of the raw material, so that the raw material for the plastic foam can foam freely at least over a certain layer thickness.
  • the spaced-apart support can be achieved, for example, via the reinforcement layer 8, for example those embodiments according to FIG. 2.
  • the further layer 13 may be, for example, a nonwoven or a plastic layer, e.g. polyethylene or polypropylene, which makes it possible to provide additional soundproofing in the area of the threshold soling 7. It is thus also a so-called spring-mass training for sound insulation possible, wherein the further layer 13 may have a different density to the plastic foam or the further layer 13 may have a different, in particular higher, mass with respect to the plastic foam.
  • a plastic layer e.g. polyethylene or polypropylene
  • FIG. 7 shows a variant in which the threshold body 5 is formed in the region of the surface 6 with a cross-sectional widening 14, for example in the manner of a foot.
  • the cross-sectional enlargement 14 is designed to encompass the plastic foam, wherein the embracing may on the one hand be such that the threshold soling 7 - seen in cross-section - is trough-shaped or can, as shown in FIG Fig. 7 is shown by dashed lines, this cross-sectional widening 14 be completely enclosed by the plastic foam.

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Abstract

L'invention concerne un procédé permettant de réaliser une semelle (7) pour traverse sur un corps (5) d'une traverse (2) au moins localement sur au moins une surface (6) faisant face à un lit de ballast (4) ou à une surface en béton lorsque le corps (5) de la traverse est positionné vers le bas. Cette semelle (7) pour traverse est constituée d'une mousse plastique, une matière première pour la mousse plastique étant appliquée sur ladite au moins une surface (6) du corps (5) de la traverse puis cette matière première étant expansée en une mousse plastique sur ladite surface (6).
PCT/AT2008/000058 2007-02-22 2008-02-22 Procédé de réalisation d'une semelle pour traverse sur un corps de traverse et traverse WO2008101269A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08706028A EP2126214A1 (fr) 2007-02-22 2008-02-22 Procédé de réalisation d'une semelle pour traverse sur un corps de traverse et traverse

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2722007 2007-02-22
ATA272/2007 2007-02-22

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Publication Number Publication Date
WO2008101269A1 true WO2008101269A1 (fr) 2008-08-28

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AT510274B1 (de) * 2010-10-04 2012-03-15 Getzner Werkstoffe Holding Gmbh Verfahren zum anschäumen einer kunststoffschaumschicht
WO2012139143A1 (fr) * 2011-04-15 2012-10-18 Getzner Werkstoffe Holding Gmbh Traverse de chemin de fer
WO2012122610A3 (fr) * 2011-03-15 2012-11-01 Cdm N.V. Semelle élastique recyclée pour des éléments en béton sous les rails d'une voie de chemin de fer et procédé de fixation de cette semelle
CN108660867A (zh) * 2018-07-26 2018-10-16 铁科腾跃科技有限公司 一种复合型聚氨酯轨枕垫及其制备方法
DE102020115509A1 (de) 2020-06-10 2021-12-16 Het Elastomertechnik Gmbh Schwellenbesohlung für ein Betonbauteil
WO2022051208A1 (fr) 2020-09-01 2022-03-10 Dow Global Technologies Llc Dispositifs de moulage et procédés de fabrication de tampons élastomères destinés à être utilisés en tant que traverses de chemin de fer
AT525444B1 (de) * 2022-01-19 2023-04-15 Getzner Werkstoffe Holding Gmbh Schwellensohle zur Anordnung an einer Unterseite einer Eisenbahnschwelle aus Beton
CN116180509A (zh) * 2023-02-15 2023-05-30 北京铁科首钢轨道技术股份有限公司 一种聚氨酯弹性缓冲垫板及其生产装置和制备方法
EP4386136A1 (fr) * 2022-12-13 2024-06-19 Getzner Werkstoffe Holding GmbH Semelle de seuil
EP4488055A1 (fr) 2023-07-07 2025-01-08 Johanna Sophie Gärlich Support pour un élément en béton à traverses de chemin de fer et procédé de fabrication
US12290826B2 (en) 2020-01-09 2025-05-06 Dow Global Technologies Llc Automated spray system to produce an elastomeric pad on a railroad tie

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JPH1193101A (ja) * 1997-09-16 1999-04-06 Nisshinbo Ind Inc 枕木及びその製造方法
DE20215101U1 (de) 2001-10-01 2003-02-27 RST Rail Systems and Technologies GmbH, 39179 Barleben Bahnschwelle mit unterseitiger Beschichtung
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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
EP1619305A2 (fr) * 2004-07-23 2006-01-25 Frenzel-Bau GmbH Assiette de voie partiellement injectée avec une mousse

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JPH0641901A (ja) * 1992-07-21 1994-02-15 Sekisui Chem Co Ltd 防振枕木
JPH1193101A (ja) * 1997-09-16 1999-04-06 Nisshinbo Ind Inc 枕木及びその製造方法
DE20215101U1 (de) 2001-10-01 2003-02-27 RST Rail Systems and Technologies GmbH, 39179 Barleben Bahnschwelle mit unterseitiger Beschichtung
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AT510274B1 (de) * 2010-10-04 2012-03-15 Getzner Werkstoffe Holding Gmbh Verfahren zum anschäumen einer kunststoffschaumschicht
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CN108660867A (zh) * 2018-07-26 2018-10-16 铁科腾跃科技有限公司 一种复合型聚氨酯轨枕垫及其制备方法
US12290826B2 (en) 2020-01-09 2025-05-06 Dow Global Technologies Llc Automated spray system to produce an elastomeric pad on a railroad tie
DE102020115509A1 (de) 2020-06-10 2021-12-16 Het Elastomertechnik Gmbh Schwellenbesohlung für ein Betonbauteil
WO2022051208A1 (fr) 2020-09-01 2022-03-10 Dow Global Technologies Llc Dispositifs de moulage et procédés de fabrication de tampons élastomères destinés à être utilisés en tant que traverses de chemin de fer
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AT525444A4 (de) * 2022-01-19 2023-04-15 Getzner Werkstoffe Holding Gmbh Schwellensohle zur Anordnung an einer Unterseite einer Eisenbahnschwelle aus Beton
EP4386136A1 (fr) * 2022-12-13 2024-06-19 Getzner Werkstoffe Holding GmbH Semelle de seuil
CN116180509A (zh) * 2023-02-15 2023-05-30 北京铁科首钢轨道技术股份有限公司 一种聚氨酯弹性缓冲垫板及其生产装置和制备方法
EP4488055A1 (fr) 2023-07-07 2025-01-08 Johanna Sophie Gärlich Support pour un élément en béton à traverses de chemin de fer et procédé de fabrication
DE102024118885A1 (de) 2023-07-07 2025-01-09 Johanna Sophie Gärlich Unterlage für einen Bahnschwellen-Betonkörper und Herstellungsverfahren

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