EP0531771B1 - Y-sleeper for rack railways - Google Patents

Y-sleeper for rack railways Download PDF

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Publication number
EP0531771B1
EP0531771B1 EP92114259A EP92114259A EP0531771B1 EP 0531771 B1 EP0531771 B1 EP 0531771B1 EP 92114259 A EP92114259 A EP 92114259A EP 92114259 A EP92114259 A EP 92114259A EP 0531771 B1 EP0531771 B1 EP 0531771B1
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EP
European Patent Office
Prior art keywords
sleeper
rack
double
track
shaped
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
EP92114259A
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German (de)
French (fr)
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EP0531771A1 (en
Inventor
Klaus Meurer
Günter Fasterding
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.)
Preussag Stahl AG
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Preussag Stahl AG
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Publication date
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Publication of EP0531771A1 publication Critical patent/EP0531771A1/en
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/16—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from steel
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E01B25/02—Tracks for rack railways

Definitions

  • the invention relates to a Y-shaped steel sleeper for rails of a railroad track.
  • Y-shaped steel sleepers are already known, for example from EP-A1-0 298 904.
  • a Y-sleeper for railroad tracks in ballast beds is disclosed, each of which has, under its sleeper ends, a positional safety device for the sleeper, which unites the steel sleepers gives increased lateral displacement resistance.
  • Each threshold has three threshold ends, each consisting of two interconnected double T-beams. The threshold ends are connected by two curved double T-beams. It is known to arrange a rack on the sleepers on tracks for rack and pinion tracks, which have to negotiate steep slopes on mountain slopes, into which complementary gear wheels of the motor vehicle of the rack and pinion track can engage.
  • the invention is based on the problem of finding a particularly safe, long-lasting track shape for a rack and pinion railway.
  • Y-shaped steel sleepers are a suitable track element under the special conditions for such cogwheel railways because they are adapted to the loads that occur.
  • the invention therefore proposes a Y-shaped steel sleeper, with three sleeper ends each consisting of two interconnected double-T beams and at least two curved double T-beams connecting the sleeper ends, at least one of which is connected on its upper side to a holder for a toothed rack arranged approximately in the middle of the track.
  • the bracket for the rack of the rack railway which is exposed to high forces, can be welded onto the threshold. This counteracts the problem of rotting wooden sleepers or concrete sleepers and the resulting loosening of the holder for the rack.
  • Steel is also extremely rigid and suitable to absorb large forces; this results in a second criterion for the use of a steel sleeper for mountain railways in order to take the safety aspect into account.
  • Y-shaped steel sleepers are to be used because it is known that they ensure a smoother train than other types of sleepers.
  • This advantage also has an effect on the reduction in wear on the toothed elements, so that there is a further improvement in economy and smooth running for the cogwheel train.
  • the holder can be welded onto both curved double T-beams. This measure results in an additional stiffening of the sleeper element, since the sleeper ends are not arranged axially parallel, as in the case of conventional simple rod-shaped transverse sleepers, but are offset in a triangular manner with respect to one another.
  • the bracket has a further attachment point per threshold.
  • the known position securing of the sleepers for a railroad track in the ballast bed should also be applied to a rack railway.
  • the position securing devices designed as profile steel should not only be arranged under the threshold ends, but also connect the threshold ends arranged at the fork spacing of the Y-threshold. This has the advantage that a further stiffening of the track element and theoretically possible spreading forces acting on the fork end of the Y threshold cannot be transferred to the fastening of the holder for the rack.
  • the securing of the position with its high resistance to lateral displacement naturally also ensures the positional accuracy of the track body, which is particularly important for mountain railways, due to the risk of the train otherwise falling or the risk of collision with the rock walls directly next to the gauge of the railroad.
  • the Y-shaped steel sleeper according to FIG. 1 has three sleeper ends 1, 2, 3, which consist of double T-beams arranged side by side.
  • two curved double-T beams form on the one hand the sleeper end 1 and on the other hand, together with short double-T support pieces 6, 7 arranged in parallel, also the sleeper ends 2 and 3 the upper chords welded together.
  • the rail can be stored between the bars 15 shown.
  • L-shaped profiles 10, 9 are arranged below the rail supports, which give the sleeper an increased positional security, in particular an increased lateral displacement resistance.
  • the position securing device 9 is designed as a connecting element between the threshold ends 2 and 3.
  • the holder 8 with the supports 11, 12 for the two parallel racks 13, 14 is welded onto the upper side of the threshold, approximately in the middle of the track.
  • the racks can be connected to the bracket 8 by screwing 16.
  • such Y-shaped steel sleepers are arranged one behind the other in an alternating position in such a way that a sleeper end 3, the sleeper end 2 and then the sleeper end 1 are followed by the next Y sleeper and serve as bearings for a rail.
  • the support sequence is corresponding: threshold end 1, threshold end 2, threshold end 3.
  • the support for the rails is designed as a double bearing due to the parallel arrangement of the double-T beams per sleeper ends 1, 2, 3, which means that the rack railway runs even more smoothly.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Railway Tracks (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Ticket-Dispensing Machines (AREA)
  • Inorganic Insulating Materials (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

The invention relates to a y-shaped sleeper for rails of rack railways. For a particularly safe, durable track shape, a y-shaped steel sleeper is provided, with three sleeper ends (1, 2, 3) consisting in each case of two interconnected double-T supports (4, 5; 4, 6 or 5, 7) and at least two curved double-T supports (4, 5) which connect the sleeper ends and at least one of which is connected on its upper side to a holding device (8), arranged approximately in the track centre, for a rack. <IMAGE>

Description

Die Erfindung betrifft eine Y-förmige Stahlschwelle für Schienen eines Bahngleises.The invention relates to a Y-shaped steel sleeper for rails of a railroad track.

Y-förmige Stahlschwellen sind bereits bekannt, beispielsweise aus der EP-A1-0 298 904. Dort ist eine Y-Schwelle für Bahngleise in Schotterbetten offenbart, die jeweils unter ihren Schwellenenden eine aus Profilstahl bestehende Lagesicherung für die Schwelle aufweisen, die den Stahlschwellen einen erhöhten Querverschiebewiderstand verleiht. Jede Schwelle weist drei Schwellenenden auf, die jeweils aus zwei miteinander verbundenen Doppel-T-Trägern bestehen. Die Schwellenenden sind durch zwei gebogene Doppel-T-Träger verbunden. Es ist bekannt, auf Gleisen für Zahnradbahnen, die an Berghängen große Steigungen überwinden müssen, eine Zahnstange auf den Schwellen anzuordnen, in die komplementäre Zahnräder des Triebfahrzeuges der Zahnradbahn eingreifen können.Y-shaped steel sleepers are already known, for example from EP-A1-0 298 904. There, a Y-sleeper for railroad tracks in ballast beds is disclosed, each of which has, under its sleeper ends, a positional safety device for the sleeper, which unites the steel sleepers gives increased lateral displacement resistance. Each threshold has three threshold ends, each consisting of two interconnected double T-beams. The threshold ends are connected by two curved double T-beams. It is known to arrange a rack on the sleepers on tracks for rack and pinion tracks, which have to negotiate steep slopes on mountain slopes, into which complementary gear wheels of the motor vehicle of the rack and pinion track can engage.

Ausgehend von diesem Stand der Technik liegt der Erfindung das Problem zugrunde, eine besonders sichere langlebige Gleisform für eine Zahnradbahn zu finden.Starting from this prior art, the invention is based on the problem of finding a particularly safe, long-lasting track shape for a rack and pinion railway.

Das Problem wird durch Anspruch 1 gelöst. Weiterbildungen der Erfindungen sind in den Unteransprüchen erfaßt.The problem is solved by claim 1. Further developments of the inventions are covered in the subclaims.

Es wurde gefunden, daß Y-förmige Stahlschwellen unter den besonderen Bedingungen für derartige Zahnradbahnen ein geeignetes Gleiselement sind, weil sie den auftretenden Belastungen angepaßt sind.It has been found that Y-shaped steel sleepers are a suitable track element under the special conditions for such cogwheel railways because they are adapted to the loads that occur.

Die Erfindung schlägt daher eine Y-fömige Stahlschwelle vor, mit drei Schwellenenden aus je zwei miteinander verbundenen Doppel-T-Trägern und mindestens zwei die Schwellenenden verbindenen gebogenen Doppel-T-Trägern, von denen mindestens einer auf seiner Oberseite mit einer etwa in Gleismitte angeordneten Halterung für eine Zahnstange verbunden ist.The invention therefore proposes a Y-shaped steel sleeper, with three sleeper ends each consisting of two interconnected double-T beams and at least two curved double T-beams connecting the sleeper ends, at least one of which is connected on its upper side to a holder for a toothed rack arranged approximately in the middle of the track.

Die Verlegung von Bahngleisen für Bergbahnen ist außerordentlich aufwendig aufgrund der Geländegegebenheiten und der zu fordernden Sicherheit für die zu befördernden Lasten bzw. Personen.The laying of railroad tracks for mountain railways is extremely complex due to the terrain and the required security for the loads or people to be transported.

Von daher bietet es sich bereits an, eine Stahlschwelle zu verwenden. Bei Stahlschwellen ist bekannt, daß sie - allerdings in Trogform - seit fast 100 Jahren zumindest auf wenig befahrenen Strecken, im Einsatz sind.It is therefore advisable to use a steel sleeper. Steel sleepers are known to have been in use - albeit in trough form - for almost 100 years, at least on routes with little traffic.

Bedingt durch die Materialart läßt sich die großen Kräften ausgesetzte Halterung für die Zahnstange der Zahnradbahn auf der Schwelle festschweißen. Damit wird dem Problem der Verrottung von Holzschwellen oder Betonschwellen und der dadurch gegebenen Lockerung der Halterung für die Zahnstange begegnet.
Stahl ist darüberhinaus außerordentlich biegesteif und geeignet große Kräfte aufzunehmen; dadurch ergibt sich ein zweites Kriterium für die Anwendung einer Stahlschwelle für Bergbahnen, um dem Sicherheitsaspekt Rechnung zu tragen.Due to the type of material, the bracket for the rack of the rack railway, which is exposed to high forces, can be welded onto the threshold. This counteracts the problem of rotting wooden sleepers or concrete sleepers and the resulting loosening of the holder for the rack.
Steel is also extremely rigid and suitable to absorb large forces; this results in a second criterion for the use of a steel sleeper for mountain railways in order to take the safety aspect into account.

Ein weiteres Problem ergibt sich aus der mangelnden Laufruhe wegen der geringen Spurbreite bei Zahnradbahnen. Erfindungsgemäß sollen daher Y-förmige Stahlschwellen eingesetzt werden, weil bekannt ist, daß diese einen ruhigeren Zuglauf gewährleisten als andere Schwellentypen. Dieser Vorteil wirkt sich auch auf die Verschleißminderung bei den Zahnelementen aus, so daß eine weitere Verbesserung der Wirtschaftlichkeit und der Laufruhe für die Zahnradbahn gegeben ist.Another problem arises from the lack of smoothness due to the narrow track width on cogwheels. According to the invention, therefore, Y-shaped steel sleepers are to be used because it is known that they ensure a smoother train than other types of sleepers. This advantage also has an effect on the reduction in wear on the toothed elements, so that there is a further improvement in economy and smooth running for the cogwheel train.

Erfindungsgemäß kann die Halterung auf beiden gebogenen Doppel-T-Trägern aufgeschweißt sein. Durch diese Maßnahme ergibt sich eine zusätzliche Versteifung des Schwellenelementes, da die Schwellenenden nicht - wie bei üblichen einfachen stabförmigen Querschwellen - achsparallel angeordnet sind, sondern dreieckförmig zueinander versetzt liegen. Außerdem hat selbstverständlich dadurch die Halterung einen weiteren Befestigungspunkt pro Schwelle.According to the invention, the holder can be welded onto both curved double T-beams. This measure results in an additional stiffening of the sleeper element, since the sleeper ends are not arranged axially parallel, as in the case of conventional simple rod-shaped transverse sleepers, but are offset in a triangular manner with respect to one another. In addition, of course, the bracket has a further attachment point per threshold.

In Weiterentwicklung des Erfindungsgedankens sollen die für sich bekannten Lagesicherungen der Schwellen für ein Bahngleis im Schotterbett auch bei einer Zahnradbahn angewendet werden. In Ergänzung der bekannten Elemente sollen die als Profilstahl ausgebildeten Lagesicherungen nicht nur unter den Schwellenenden angeordnet sein, sondern auch die im Gabelabstand der Y-Schwelle angeordneten Schwellenenden miteinander verbinden. Dies hat den Vorteil, einer weiteren Versteifung des Gleiselementes und theoretisch mögliche, auf das Gabelende der Y-Schwelle wirkende Spreizkräfte können nicht auf die Befestigung der Halterung für die Zahnstange übertragen werden.
Die Lagesicherung mit ihrem hohen Querverschiebewiderstand sorgt natürlich auch für die bei Bergbahnen besonders zu fordernde Lagetreue des Gleiskörpers wegen der sonst gegebenen Absturzgefahr des Zuges oder Kollisionsgefahr mit den unmittelbar neben dem Lichtraumprofil der Bahn anzutreffenden Felswänden.In a further development of the concept of the invention, the known position securing of the sleepers for a railroad track in the ballast bed should also be applied to a rack railway. In addition to the known elements, the position securing devices designed as profile steel should not only be arranged under the threshold ends, but also connect the threshold ends arranged at the fork spacing of the Y-threshold. This has the advantage that a further stiffening of the track element and theoretically possible spreading forces acting on the fork end of the Y threshold cannot be transferred to the fastening of the holder for the rack.
The securing of the position with its high resistance to lateral displacement naturally also ensures the positional accuracy of the track body, which is particularly important for mountain railways, due to the risk of the train otherwise falling or the risk of collision with the rock walls directly next to the gauge of the railroad.

Schließlich wird vorgeschlagen, an der Halterung Stützen in vertikaler Richtung anzubringen, damit die Zahnstange stets auf gleicher Höhe gehalten werden. Dadurch läßt sich die Eingriffslinie des Zahnrades relativ zur Zahnstange gut positionieren.Finally, it is proposed to attach supports to the bracket in the vertical direction so that the rack is always kept at the same height. This allows the line of engagement of the gear to be positioned well relative to the rack.

Anhand zweier schematischer Zeichnungen soll die Erfindung näher erläutert werden. Es zeigen:

Figur 1
eine Y-förmige Stahlschwelle für eine Zahnradbahn in Draufsicht,
Figur 2
eine Y-förmige Stahlschwelle für eine Zahnradbahn in Seitenansicht.
The invention will be explained in more detail with the aid of two schematic drawings. Show it:
Figure 1
a Y-shaped steel sleeper for a rack railway in top view,
Figure 2
a Y-shaped steel sleeper for a rack railway in side view.

Die Y-förmige Stahlschwelle gemäß Figur 1 weist drei Schwellenenden 1, 2, 3 auf, die aus nebeneinander angeordneten Doppel-T-Trägern bestehen. Dabei bilden zwei gebogene Doppel-T-Träger zum einen das Schwellenende 1 und zum anderen gemeinsam mit parallel angeordneten kurzen Doppel-T-Trägerstücken 6, 7 auch die Schwellenenden 2 und 3. Die parallel angeordneten Doppel-T-Träger sind durch Riegel 15 auf den Obergurten miteinander verschweißt. Zwischen den dargestellten Riegeln 15 kann die Schiene gelagert werden. Unterhalb der Schienenauflager sind L-förmige Profile 10, 9 angeordnet, die der Schwelle eine erhöhte Lagesicherheit, insbesondere einen erhöhten Querverschiebewiderstand geben. Dabei ist die Lagesicherung 9 als Verbindungselement zwischen den Schwellenenden 2 und 3 ausgebildet. Auf der Oberseite der Schwelle etwa in Gleismitte ist die Halterung 8 mit den Stützen 11, 12 für die beiden parallelen Zahnstangen 13, 14 festgeschweißt. Die Zahnstangen können durch Verschraubung 16 mit der Halterung 8 verbunden werden.The Y-shaped steel sleeper according to FIG. 1 has three sleeper ends 1, 2, 3, which consist of double T-beams arranged side by side. In this case, two curved double-T beams form on the one hand the sleeper end 1 and on the other hand, together with short double-T support pieces 6, 7 arranged in parallel, also the sleeper ends 2 and 3 the upper chords welded together. The rail can be stored between the bars 15 shown. L-shaped profiles 10, 9 are arranged below the rail supports, which give the sleeper an increased positional security, in particular an increased lateral displacement resistance. The position securing device 9 is designed as a connecting element between the threshold ends 2 and 3. The holder 8 with the supports 11, 12 for the two parallel racks 13, 14 is welded onto the upper side of the threshold, approximately in the middle of the track. The racks can be connected to the bracket 8 by screwing 16.

In Gleislängsrichtung sind derartige Y-förmige Stahlschwellen hintereinander in wechselnder Lage derart angeordnet, daß auf ein Schwellenende 3, das Schwellenende 2 und dann Schwellenende 1 der nächsten Y-Schwelle folgt und als Lagerung für eine Schiene dienen. Für die andere Schiene ist die Auflagerfolge entsprechend: Schwellenende 1, Schwellenende 2, Schwellenende 3.In the longitudinal direction of the track, such Y-shaped steel sleepers are arranged one behind the other in an alternating position in such a way that a sleeper end 3, the sleeper end 2 and then the sleeper end 1 are followed by the next Y sleeper and serve as bearings for a rail. For the other rail, the support sequence is corresponding: threshold end 1, threshold end 2, threshold end 3.

Die Auflagerung für die Schienen ist wegen der parallelen Anordnung der Doppel-T-Träger pro Schwellenende 1, 2, 3 als Doppellager ausgeführt, was eine zusätzliche Laufruhe für die Zahnradbahn mit sich bringt.The support for the rails is designed as a double bearing due to the parallel arrangement of the double-T beams per sleeper ends 1, 2, 3, which means that the rack railway runs even more smoothly.

Claims (4)

  1. Y-shaped steel sleeper for rails of a rack railway line, having three sleeper ends (1, 2, 3) each formed from two interconnected double-T-shaped carriers (4, 5, 4, 6 and 5, 7 respectively) and at least two arcuate double-T-shaped carriers (4, 5), which connect the sleeper ends, at least one of said carriers being connected on its upper surface to a holder (8), which is disposed substantially in the centre of the track, for retaining a toothed rack (13, 14).
  2. Steel sleeper according to claim 1, characterised by a holder (8), which is welded on two arcuate double-T-shaped carriers (4, 5).
  3. Steel sleeper according to claim 1 or 2, characterised by a position securing means (9, 10) for securing the steel sleeper, said means connecting the two arcuate double-T-shaped carriers (4, 5) on their underside and being disposed substantially in the region of the mounting for the rails.
  4. Steel sleeper according to one of claims 1 to 3, characterised by at least one support (11, 12) for supporting a toothed rack (13, 14), said support being provided on the holder (8).
EP92114259A 1991-09-12 1992-08-21 Y-sleeper for rack railways Expired - Lifetime EP0531771B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9111363U 1991-09-12
DE9111363U DE9111363U1 (en) 1991-09-12 1991-09-12 Y-sleeper for rack railway

Publications (2)

Publication Number Publication Date
EP0531771A1 EP0531771A1 (en) 1993-03-17
EP0531771B1 true EP0531771B1 (en) 1995-02-01

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Family Applications (1)

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EP92114259A Expired - Lifetime EP0531771B1 (en) 1991-09-12 1992-08-21 Y-sleeper for rack railways

Country Status (3)

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EP (1) EP0531771B1 (en)
AT (1) ATE118048T1 (en)
DE (2) DE9111363U1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU81116A1 (en) * 1979-04-03 1980-04-21 Arbed FASTENING SYSTEM SUITABLE FOR FASTENING RAILWAY RAILS ON STEEL SLEEPERS
DE3722627A1 (en) * 1987-07-09 1989-01-26 Salzgitter Peine Stahlwerke LOCAL SECURITY FOR STEEL SLEEPERS

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DE9111363U1 (en) 1992-11-12
DE59201332D1 (en) 1995-03-16
ATE118048T1 (en) 1995-02-15
EP0531771A1 (en) 1993-03-17

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