EP0095210A1 - Organe d'attache pour rails de chemin de fer et méthode pour la fabrication d'un tel organe - Google Patents
Organe d'attache pour rails de chemin de fer et méthode pour la fabrication d'un tel organe Download PDFInfo
- Publication number
- EP0095210A1 EP0095210A1 EP83200696A EP83200696A EP0095210A1 EP 0095210 A1 EP0095210 A1 EP 0095210A1 EP 83200696 A EP83200696 A EP 83200696A EP 83200696 A EP83200696 A EP 83200696A EP 0095210 A1 EP0095210 A1 EP 0095210A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- members
- chair
- envelope
- sole plate
- injection
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
- E01B9/14—Plugs, sleeves, thread linings, or other inserts for holes in sleepers
- E01B9/18—Plugs, sleeves, thread linings, or other inserts for holes in sleepers for concrete sleepers
Definitions
- the invention relates to a chair for attaching a railroad rail to a sleeper, comprising a sole plate with clips on one side for holding the rail and with one or more members projecting from the other side to be embedded in the sleeper, said member or members and said other side of the sole plate being encased in an electrically non-conductive envelope.
- the invention also relates to a method of manufacturing a chair for the attachment of a railroad rail.
- An envelope generally used consists of a glass-fibre re-inforced polyester material.
- the envelope is cast around the relevant parts of the chair by means of a solvent casting process.
- the known chair has members which are to be enveloped and which are angular in cross-section.
- a casting material and a solvent casting process have been chosen so as not to damage the glass fibres during the formation of the envelope. Damage to the glass fibres leads to reduction in the strength of the envelope.
- Solvent casting processes have the disadvantage of being time-consuming and being less suitable from a point of view of environmental pollution due to the use of solvents.
- the invention is based on the discovery that a sufficiently strong envelope can also be obtained by a varied geometry of the chair in combination with injection moulding.
- the chair according to the invention is characterized in that the cros-section of said member or each of said members (3) in a direction transverse to the direction in which the member projects from the sole plate has a curved circumference and the envelope is made of a glass-fibre-reinforced polyester injection-moulding material.
- the method according to the invention is characterized in that the member or members (3) projecting from the sole plate and the side of this plate from which said member or member projects or project are arranged in an injection mould and a glass-fibre-reinforced polyester envelope is injection moulded around said member or members (3) and on the side of the sole plate (1) from which the member or members (3) projects or project.
- Injection moulding is to be understood herein to mean a method in which the injection moulding material is injected at a pressure of 2 200 kg or more per cm .
- the or each projecting member preferably has circumferential ridges.
- a particularly practical construction of the method in accordance with the invention is characterized in that the sole plate of the tie-plate is used as a boundary surface of the mould.
- the chair shown in Fig. 1 comprises a sole plate (1), on one side of which are formed two clips (2) for holding a railroad rail.
- the rail which is not shown in the drawing, is clamped between the clips (2).
- Elongate members (3) project from the other side of the plate (1). These members are embedded in a sleeper, not shown, to attach the chair to the sleeper.
- the members (3) may comprise circumferential ridges (5).
- the sleeper may be manufactured from concrete.
- the members (3) can be moulded into the concrete during the manufacture of the sleeper. Alternatively, they may be inserted afterwards in holes which are provided in the sleepers.
- the sole plate (1), clips (2) and members (3) are usually manufactured from metal, for example by casting or forging or combinations thereof.
- Fig. 2a shows the transverse of a member (3).
- Figs. 2b and 2c show, by way of example, other possible transverse cross-sections of the members (3). According to the invention it is essential for the transverse cross-section of each of the members (3) to have a curved circumference so that the members have no sharp edges.
- Reference numeral (4) in Fig. 1 and Figs. 2a, 2b and 2c denotes an injection-moulded envelope of a glass-l'ibre-reinforced polyester resin.
- the envelope may have a thickness of from 0.5 to 10 mm; a thickness of 3 mm gives good results.
- the envelope usually comprises fillers, dyes, hardener and catalyst.
- Fig. 1 shows a chair having two members (3).
- Other constructions are also possible in which, for example, a single U-shaped member is used; such a member may be considered as being constituted by two members similar to the two members (3) shown in Fig. 1, interconnected by a cross-piece.
- the moulding material can best be injected at the ends of the members (3).
- an injection mould in which the two members (3) fit with a small clearance (corresponding to the desired thickness of the envelope).
- This mould is sealed at one end by the sole plate (1), which is pressed against the mould by means of a clamp.
- the injection-moulding material is injected into the mould via an aperture.
- This aperture is preferably located near the free ends of the members (3), i.e., the ends remote from the sole plate (1).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Body Structure For Vehicles (AREA)
- Railway Tracks (AREA)
- Seats For Vehicles (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83200696T ATE14903T1 (de) | 1982-05-21 | 1983-05-17 | Vorrichtung zum befestigen von eisenbahnschienen und verfahren zum herstellen dieser vorrichtung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8202093 | 1982-05-21 | ||
NL8202093A NL8202093A (nl) | 1982-05-21 | 1982-05-21 | Klem voor het bevestigen van spoorrails, werkwijze voor het vervaardigen van een klem. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0095210A1 true EP0095210A1 (fr) | 1983-11-30 |
EP0095210B1 EP0095210B1 (fr) | 1985-08-14 |
Family
ID=19839768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83200696A Expired EP0095210B1 (fr) | 1982-05-21 | 1983-05-17 | Organe d'attache pour rails de chemin de fer et méthode pour la fabrication d'un tel organe |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0095210B1 (fr) |
JP (1) | JPS58207401A (fr) |
AT (1) | ATE14903T1 (fr) |
DE (1) | DE3360562D1 (fr) |
NL (1) | NL8202093A (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0181607A1 (fr) * | 1984-11-08 | 1986-05-21 | Preussag Stahl Aktiengesellschaft | Dispositif pour la fixation des rails de chemin de fer sur des traverses en acier en forme d'Y |
DE3521673A1 (de) * | 1984-11-08 | 1986-05-22 | Stahlwerke Peine-Salzgitter Ag, 3320 Salzgitter | Vorrichtung zur befestigung von schienen einer eisenbahn auf stahlschwellen, insbesondere auf y-stahlschwellen |
US4718604A (en) * | 1985-03-15 | 1988-01-12 | Vossloh-Werke Gmbh | Clamp and fastening arrangement for rails |
US4913343A (en) * | 1987-10-19 | 1990-04-03 | Pandrol Limited | Electrical insulator for insulating a railway rail-fastening clip from a retaining member for it |
BE1003927A3 (nl) * | 1990-10-31 | 1992-07-14 | Betonkonstruktie V D Hemiksem | Verbeterd element voor het bevestigen van een rail op een betonnen dwarsligger. |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0434162Y2 (fr) * | 1986-04-28 | 1992-08-14 | ||
DE3728304A1 (de) * | 1987-08-25 | 1989-03-16 | Strabag Bau Ag | Eisenbahnschwelle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1108300A (fr) * | 1953-09-18 | 1956-01-11 | Everts & Van Der Weyden N V | Traverse en béton à trous tamponnés pour la fixation de rails |
GB865120A (en) * | 1958-05-07 | 1961-04-12 | Samuel Tippett | Improvements relating to the holding down of rails on sleepers |
FR1296107A (fr) * | 1961-05-06 | 1962-06-15 | Querne & Cie E | Procédé pour la consolidation des tire-fonds, notamment des tire-fonds des traverses de chemin de fer |
GB961876A (en) * | 1961-12-15 | 1964-06-24 | Samuel Tippett | Improvements relating to sleeves for use in holding down railway lines on sleepers |
FR2315568A1 (fr) * | 1975-06-25 | 1977-01-21 | Vape Sa Ets | Dispositif de fixation a vis dans un element de construction en matiere agglomeree |
-
1982
- 1982-05-21 NL NL8202093A patent/NL8202093A/nl not_active Application Discontinuation
-
1983
- 1983-05-17 DE DE8383200696T patent/DE3360562D1/de not_active Expired
- 1983-05-17 AT AT83200696T patent/ATE14903T1/de not_active IP Right Cessation
- 1983-05-17 EP EP83200696A patent/EP0095210B1/fr not_active Expired
- 1983-05-19 JP JP58086747A patent/JPS58207401A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1108300A (fr) * | 1953-09-18 | 1956-01-11 | Everts & Van Der Weyden N V | Traverse en béton à trous tamponnés pour la fixation de rails |
GB865120A (en) * | 1958-05-07 | 1961-04-12 | Samuel Tippett | Improvements relating to the holding down of rails on sleepers |
FR1296107A (fr) * | 1961-05-06 | 1962-06-15 | Querne & Cie E | Procédé pour la consolidation des tire-fonds, notamment des tire-fonds des traverses de chemin de fer |
GB961876A (en) * | 1961-12-15 | 1964-06-24 | Samuel Tippett | Improvements relating to sleeves for use in holding down railway lines on sleepers |
FR2315568A1 (fr) * | 1975-06-25 | 1977-01-21 | Vape Sa Ets | Dispositif de fixation a vis dans un element de construction en matiere agglomeree |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0181607A1 (fr) * | 1984-11-08 | 1986-05-21 | Preussag Stahl Aktiengesellschaft | Dispositif pour la fixation des rails de chemin de fer sur des traverses en acier en forme d'Y |
DE3521673A1 (de) * | 1984-11-08 | 1986-05-22 | Stahlwerke Peine-Salzgitter Ag, 3320 Salzgitter | Vorrichtung zur befestigung von schienen einer eisenbahn auf stahlschwellen, insbesondere auf y-stahlschwellen |
US4718604A (en) * | 1985-03-15 | 1988-01-12 | Vossloh-Werke Gmbh | Clamp and fastening arrangement for rails |
US4913343A (en) * | 1987-10-19 | 1990-04-03 | Pandrol Limited | Electrical insulator for insulating a railway rail-fastening clip from a retaining member for it |
BE1003927A3 (nl) * | 1990-10-31 | 1992-07-14 | Betonkonstruktie V D Hemiksem | Verbeterd element voor het bevestigen van een rail op een betonnen dwarsligger. |
Also Published As
Publication number | Publication date |
---|---|
ATE14903T1 (de) | 1985-08-15 |
NL8202093A (nl) | 1983-12-16 |
EP0095210B1 (fr) | 1985-08-14 |
DE3360562D1 (en) | 1985-09-19 |
JPS58207401A (ja) | 1983-12-02 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19831220 |
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ITF | It: translation for a ep patent filed |
Owner name: ING. C. GREGORJ S.P.A. |
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