EP0486465B1 - Kunststoffschwelle - Google Patents

Kunststoffschwelle Download PDF

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Publication number
EP0486465B1
EP0486465B1 EP91890274A EP91890274A EP0486465B1 EP 0486465 B1 EP0486465 B1 EP 0486465B1 EP 91890274 A EP91890274 A EP 91890274A EP 91890274 A EP91890274 A EP 91890274A EP 0486465 B1 EP0486465 B1 EP 0486465B1
Authority
EP
European Patent Office
Prior art keywords
plastic
profiles
dowels
insert
sleeper
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.)
Expired - Lifetime
Application number
EP91890274A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0486465A1 (de
Inventor
Herbert Dipl.-Ing. Klein
Peter Freitag
Johannes Dipl.-Ing. Blumauer
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.)
Voestalpine Railway Systems GmbH
Original Assignee
Voestalpine VAE GmbH
Voestalpine Weichensysteme 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 Voestalpine VAE GmbH, Voestalpine Weichensysteme GmbH filed Critical Voestalpine VAE GmbH
Publication of EP0486465A1 publication Critical patent/EP0486465A1/de
Application granted granted Critical
Publication of EP0486465B1 publication Critical patent/EP0486465B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
    • E01B3/32—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone with armouring or reinforcement
    • 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
    • E01B3/44—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from other materials only if the material is essential

Definitions

  • the invention relates to a plastic sleeper for the railway superstructure, in which a stiffening insert plate with openings for the anchoring of rail screws is arranged in a plastic, in particular rigid polyurethane foam.
  • Plastic sleepers of the type mentioned at the outset can be found, for example, in AT-B-387 412.
  • chipboard cores are sometimes arranged as inlays, with additional insert plates with a relatively complex shape being used to improve the anchoring of rail screws in the interior of plastic sleepers.
  • From an embodiment of such plastic sleepers known from AT-B-305 330 it has already become known to provide steel reinforcements in those areas in which rails are to be fixed. With such an arrangement of steel reinforcements running in the middle, there is a risk of cracks across the width or height of the polyurethane foam, which adjoins these reinforcements, particularly in the case of particularly high loads and high axle pressures.
  • Such plastic sleepers are usually produced in a molding box, which can be cast with polyurethane after inserting core components. The hardening process increases the volume and the outer contour of such a plastic sleeper is created in accordance with the shape of the molding box.
  • the present invention now aims to develop a plastic sleeper of the type mentioned in such a way that it can withstand higher axle loads with certainty without the risk of cracking, while at the same time a particularly simple manufacture and safe anchoring option for rail screws or the like. is offered.
  • the threshold according to the invention essentially consists in the fact that protruding profiles are connected to the edges of the insert extending in the longitudinal direction of the threshold. Due to the fact that the inserts running in the longitudinal direction of the sleeper are now equipped with an additional profile at their longitudinal edges, which exceeds the height of these inserts, it was surprisingly observed that the formation of cracks on the edges of the insert could no longer be observed even with higher axle loads .
  • the profiles protruding in the height direction above the height of the insert not only improved the rigidity of the insert, but at the same time effectively counteracted the formation of cracks.
  • the design is such that the profiles are designed as U or C profiles, the free legs of one profile facing the free legs of the opposite profile.
  • Such a configuration of the profiles running in the longitudinal direction along the edges of the insert leads to an improvement in the securing of the position of the insert, the inwardly projecting free legs of such U or C profiles having a certain degree of elasticity which further counteracts crack formation.
  • such a profile shape improves the bending stiffness of the sleeper with a low weight of the insert.
  • a further improvement in rigidity in particularly high-stress areas and in particular an exact one Securing the position of the profiles running in the longitudinal direction of the sleeper can be achieved in that the design is such that the profiles in the area below the rail support are connected, in particular welded, to form a box girder via at least two sheets lying one above the other and parallel to the rail support.
  • the box profile designed in this way enables safe anchoring of dowels for the reception of rail screws, whereby the inserts can extend into the hollow box, provided that a corresponding flooding through the plastic material is ensured when foaming in the area of the box profile.
  • the design can preferably be such that the metal sheets have openings for receiving dowels for rail screws, the openings in one direction preferably having a dimension that exceeds the diameter of the dowels.
  • the uniaxial widening of such openings for receiving dowels ensures the penetration of subsequently hardening plastic mass into the area of the dowels or into the interior of the hollow box, which is limited by the mutually parallel surfaces and the profiles, so that the Pull-out strength is improved and the absorption of tilting moments is ensured by such rail screws with a simple construction of the anchoring inserts.
  • the life of the sleepers can be significantly increased by such a design with a particularly low weight.
  • the design is advantageously made such that the inserts within the hollow box formed by the profiles and the sheets in the area of the perforations in the sheets likewise has openings, the clear width of which exceeds the outer diameter of the dowels.
  • a further increase in the service life and in particular an improvement in the stability at particularly high axle loads can be achieved in that the surface of the sheet facing the rail support bears a support made of pressure-distributing material, in particular a grid or knobbed plate made of plastic.
  • a pressure-distributing pad is usually referred to as a "construct material", such a pad not only improving the pressure distribution in the polyurethane, but also improving the anchoring of the polyurethane on the smooth metal surfaces.
  • the inserts can consist of wood, in particular chipboard, whereby particularly cheap construction materials can be used with high strength and secure anchoring of the screws.
  • the training is advantageously made such that the dowels are designed as plastic dowels.
  • FIG. 1 shows a longitudinal section through a plastic sleeper according to the invention with a schematically illustrated rail fastened thereon; 2 shows a plan view in the direction of arrow II of the plastic sleeper according to FIG. 1 without illustration of the rail; 3 shows a section along the line III-III of Figures 1 and 2 in the region of the arrangement of rail screws for fixing a rail on the plastic sleeper according to the invention on an enlarged scale; 4 shows, in a representation similar to FIG. 3, a section along the line IV-IV in FIGS. 1 and 2 in an area outside a rail support; and Fig. 5 in again enlarged scale, a top view of a sheet running essentially parallel to the rail support, which forms a hollow box together with the profiles.
  • 1 denotes a plastic sleeper, in which an insert formed by a particle board core 2 running in the longitudinal direction of the sleeper is arranged.
  • the insert or the core 2 is, as will become clearer from the following figures, delimited by the edges 3 running in the longitudinal direction of the threshold, these profiles projecting beyond the height of the insert 2.
  • the profiles 3 running in the longitudinal direction of the insert 2 are at least two superimposed in the vertical direction , connected to the rail support substantially parallel sheets 8 together.
  • the sheets 8 have recesses or openings 9 for receiving plastic dowels 10 for fixing rail screws. Furthermore, additional openings 11 are indicated in the sheets 8 in FIG. 2 in order to ensure that plastic penetrates into the mold when the sleepers are foamed out, as will be explained in more detail with reference to the following figures.
  • the profiles 3 are formed by U or C profiles, the free legs 12 of which face each other.
  • U or C profiles on the one hand the bending stiffness of the sleeper is increased and, on the other hand, cracking of the sleeper under stresses in the region of the edge of the insert or of the profiles is prevented. It can be clearly seen that the profiles 3 extending in the longitudinal direction protrude above the height of the insert 2.
  • the profiles 3 are connected to one another via the sheets 8 running transversely to the surface of the threshold, in which plastic dowels 10 are in turn used for fixing rail screws.
  • the insert or core 2 also has recesses or openings 13, the clear width of which exceeds the outer diameter of the dowels, so that penetration into the stiffening plates 8 occurs with the formation of the openings 9 shown in FIG and foaming of the hollow box formed by the profiles 3 and the sheets 8 is ensured.
  • a support 14 made of pressure-distributing material for example a “construct material” grid or knob plate made of plastic, is arranged, which results in better pressure distribution in the polyurethane foam.
  • the recesses or openings 9 for the support of the plastic dowels in the direction or axis denoted by 15 have a dimension which exceeds the diameter of the dowels.
  • 5 also shows the additionally provided openings 11 for the penetration of plastic during foaming and a correspondingly secure connection of the plastic with the chipboard core.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Railway Tracks (AREA)
  • Ceramic Products (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Bridges Or Land Bridges (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
EP91890274A 1990-11-14 1991-11-12 Kunststoffschwelle Expired - Lifetime EP0486465B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2297/90 1990-11-14
AT229790 1990-11-14

Publications (2)

Publication Number Publication Date
EP0486465A1 EP0486465A1 (de) 1992-05-20
EP0486465B1 true EP0486465B1 (de) 1994-04-20

Family

ID=3531746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890274A Expired - Lifetime EP0486465B1 (de) 1990-11-14 1991-11-12 Kunststoffschwelle

Country Status (7)

Country Link
EP (1) EP0486465B1 (pt)
JP (1) JPH04285201A (pt)
AT (1) ATE104716T1 (pt)
DE (1) DE59101442D1 (pt)
FI (1) FI915361A (pt)
NO (1) NO914446L (pt)
PT (1) PT99512A (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1009805A5 (fr) * 1995-11-29 1997-08-05 W Lippens S A Nv Traverse pour voie de chemin de fer.
US6179215B1 (en) * 1996-07-29 2001-01-30 Primix International, Llc Composite railroad crosstie
CN1304695C (zh) * 2005-07-21 2007-03-14 袁强 整体包覆式铁路轨枕及其制造方法
US7592059B2 (en) 2005-08-16 2009-09-22 Dustin K. Lane, legal representative Lightweight, composite structural railroad ties

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR320261A (fr) * 1902-04-07 1902-12-05 Doyle John Perfectionnements apportés à la construction des attaches des rails
FR433819A (fr) * 1911-09-01 1912-01-17 John Henry Flood Traverse en béton armé
US1522209A (en) * 1924-07-29 1925-01-06 Ruse Olford Frank Railroad tie
AT305330B (de) * 1971-06-21 1973-02-26 Voest Ag Kunststoff-Gleisschwelle, insbesondere für schotterlosen Oberbau
DE3039931C2 (de) * 1980-10-23 1982-09-16 Dyckerhoff & Widmann AG, 8000 München Dübel für die Befestigung von Schienen auf Spannbetonschwellen
JPS583841U (ja) * 1981-06-30 1983-01-11 東芝設備機器株式会社 厨房家具

Also Published As

Publication number Publication date
JPH04285201A (ja) 1992-10-09
NO914446D0 (no) 1991-11-13
FI915361A0 (fi) 1991-11-13
ATE104716T1 (de) 1994-05-15
DE59101442D1 (de) 1994-05-26
PT99512A (pt) 1993-12-31
FI915361A (fi) 1992-05-15
NO914446L (no) 1992-05-15
EP0486465A1 (de) 1992-05-20

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