EP1247899A2 - Kunststoffgleitplatte für Schienenweichen - Google Patents
Kunststoffgleitplatte für Schienenweichen Download PDFInfo
- Publication number
- EP1247899A2 EP1247899A2 EP02003611A EP02003611A EP1247899A2 EP 1247899 A2 EP1247899 A2 EP 1247899A2 EP 02003611 A EP02003611 A EP 02003611A EP 02003611 A EP02003611 A EP 02003611A EP 1247899 A2 EP1247899 A2 EP 1247899A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding plate
- plate according
- sliding
- switch
- plastic material
- 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
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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
- E01B7/00—Switches; Crossings
- E01B7/02—Tongues; Associated constructions
Definitions
- the invention relates to a plastic sliding plate for rail switches, which a switch chair which is interchangeably mounted and a gliding plane defined for a switch tongue.
- Such sliding plates are known for example from DE 26 31 594.
- the sliding plates that were previously only used in part and are still in use today made of metal require regular maintenance, mainly an in certain time intervals to be repeated to lubricate the for the shift the necessary forces resting on the slide plate to keep it as small as possible.
- the lubrication also serves as protection against corrosion the metallic switch slide plates, which are mostly made of steel.
- the applied lubricating film encrusts over time due to environmental influences and thus reduces the operational safety of the switch.
- the crusty greasy film must therefore be removed from time to time with special cleaning devices.
- This regular maintenance and cleaning work requires a considerable amount Personnel and cost expenditure and also pose a significant risk for the maintenance personnel, since they are constantly in the maintenance and cleaning area Trains run on the rails.
- the known plastic sliding plates bring in compared to the metal sliding plates Significant improvement in freedom from maintenance.
- the turnout drives designed for pivoting the switch tongues with only a small reserve so that worn sliding plates or switch tongues sunken into the sliding plates question reliable switch operation. This then means a unacceptable security risk, which can only be avoided by premature Replacing the sliding plates can counteract.
- an extension of the Maintenance and replacement intervals are expected, especially for new build and High-speed routes where the necessary infrastructure (train stations) is far away, extremely long distances for maintenance and repair and the risk for maintenance personnel is particularly high.
- the object of the present invention is therefore that described at the outset To further develop plastic sliding plates so that they meet today's requirements and safe switch operation possible regardless of the season is.
- the slide plate is made of a plastic material, which is a polymer forming a matrix and one dispersed in the matrix Fluorocarbon polymer comprises, the fluorocarbon polymer is chemically coupled to the matrix polymer.
- the matrix polymer can be selected from a wide range of polymers, and the preferred matrix polymers are selected from polyamides, polyesters, in particular polyethylene terephthalates and polybutylene terephthalates, Polyphenylene sulfides, polyacetals, thermoplastic polyurethanes and / or Polyether ether ketones.
- polyamide is used as the matrix polymer and polytetrafluoroethylene is obtained in the coupling of radiation via electron radiation
- Carboxylic acid groups on polytetrafluoroethylene polymers when electron irradiation in the presence of oxygen.
- these carboxylic acid groups have such a reactivity, that by umamidation PTFE-polyamide block copolymers are formed, which in Comparison to material combinations in which unirradiated PTFE and polyamide exist side by side, achieve a much higher level of strength.
- Preferred plastic sliding plates have the proportion of fluorocarbon polymers further reducing sliding friction and wear Additives on.
- MoS 2 graphite, boron nitride, polyimides, polyphenylene sulfones, waxes, oils and fats are preferred among such additives.
- the reinforcing materials are selected from short and / or long fibers made of glass, carbon, Keflar, metal, hemp and flax.
- plastic material of the slide plate according to the invention can also Contain fillers to optimize the material price.
- Suitable fillers for the plastic material of the sliding plate are e.g. B. kaolin, talc, calcium carbonate, silicon carbide, wollastonite, mica or TiO 2 .
- the plastic material of the invention Slide plate additionally impact modifier matched to the matrix polymer includes, which is mainly used when extremely low operating temperatures are to be expected.
- a rail 12 in a conventional manner on sleepers 14 made of wood, concrete or some other material is essential part of the switch 10 .
- a switch tongue 16 which (not.) shown) in a conventional manner, for example with the aid of a drive motor, can be moved back and forth between an open and a closed position is. The closed position is shown in FIG.
- the switch tongue 16 slides on switch chairs 18, each with a plate-shaped attached to the sleepers 14 Pad 20 are connected.
- switch chair 18 and pad 20 made of steel.
- the surface of the switch chair 18, which is the sliding plane for the Defined switch tongue 16 is formed by a plastic covering 22, hereinafter called plastic sliding plate according to the invention.
- the plastic sliding plates 22 are attached to the switch chair 18, as described in detail in DE 26 31 594 B1.
- Figure 2 shows a sectional view of the switch 10 with the rail 12 and Switch tongue 16, mounted on a threshold 24. At the point of the rail switch 10 in the area of the threshold 24, the switch tongue 16 is not on the head the rail 12, but keeps a distance from it. While the sectional view 1 shows the arrangement of the switch tongue 16 compared to the Rail 12 shows in a region of the free end of the switch tongue 16 is the Sectional view of Figure 2 at a point along the length of the switch tongue 16 shown, in which this (also in the closed position of the switch 10) one Keeps distance from the rail 12.
- FIG. 2 also shows how the switch tongue 16 changes due to the Shear forces A can twist, so that no longer the entire lower surface with which the switch tongue 16 rests on the plastic sliding plate 22, but this acts with a lower edge 28 concentrated on the plastic sliding plate 22.
- Figures 3A to 3C show a preferred embodiment of an inventive Slide plate 30, which on two long and a narrow side 32, 33, 34th has chamfered edge regions 36, 37, 38, so that the cross-sectional area is trapezoidal to the longitudinal direction of the slide plate.
- the edge areas 36, 37, 38 engage with play in dovetail grooves of the switch chair.
- the assembly, disassembly or replacement can be designed very simply by simply sliding the plate 30 in the dovetail grooves are inserted or pulled out of them. After the sliding plate 30 is inserted into its seat, it is only on a backing plate (similar to that in Figures 1 and 2 screwed with the reference numeral 27), what an unintentional sliding out of the sliding plate 30 from her Seat, for example by the sliding movement of the switch tongue 16 prevented.
- the slide plate shown in FIGS. 3A to 3C has a special feature the surface 42 forming the sliding plane has a plurality of parallel grooves 44, which are arranged at an acute angle to the longitudinal direction of the sliding plate.
- grooves have the advantage that dirt particles on the switch chair arrive, are pushed from the sliding plane into the grooves 44 and not permanently increase the friction between the slide plate and switch tongue. Because of the special orientation of the grooves 44 becomes that which accumulates there Dirt when moving the switch tongue to the edges of the slide plate 30 and transported out of the grooves 44. So you get during the Operation of a switch automatically self-cleaning in the area of the sliding plate 30th
- the plastic sliding plate shown in the figures consists of a polyamide 6.6 as a matrix polymer in which a polytetrafluoroethylene is dispersed is incorporated.
- the PTFE material is chemically on coupled the matrix polymer polyamide 6.6, which is dependent in FIG advantage shown by the PTFE mass fraction with regard to the increase in relative yield stress (improved mechanical property) results.
- the upper curve shows the chemically coupled material
- the lower curve shows the case in which the polyamide 6.6 and PTFE are present side by side without coupling.
- FIG. 5 shows the development of the elastic modulus in the case with and without chemical coupling of polyamide 6.6 and PTFE in one Range of PTFE mass fractions from 0 to 50% shows.
- a sliding plate with polyamide is used as a matrix polymer in one place, where extremely low ambient temperatures are expected, preference is given to an EPDM material finely dispersed in the matrix as an impact modifier used.
- the proportions of the EPDM impact modifier can be up to 10% by weight. be.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Slide Switches (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Railway Tracks (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
- Figur 1:
- eine schematische Schnittansicht durch eine Weiche mit einem Weichenstuhl mit erfindungsgemäßer Kunststoffgleitplatte;
- Figur 2:
- eine Schnittansicht ähnlich wie Figur 1, jedoch mit einer anderen Stellung der Weichenzunge der Weiche;
- Figur 3A bis 3C:
- eine Draufsicht bzw. Schnittansichten einer bevorzugten Ausführungsform der erfindungsgemäßen Gleitplatte;
- Figur 4:
- ein Diagramm der relative Streckspannung in Prozent gegenüber dem Masseanteil von PTFE in einem Kunststoffmaterial der erfindungsgemäßen Gleitplatte;
- Figur 5:
- ein Diagramm der Entwicklung des E-Moduls in Abhängigkeit des PTFE-Massenanteils (Prozent) in dem Kunststoffmaterial der erfindungsgemäßen Gleitplatte;
- Figur 6:
- ein Diagramm des Verhaltens des Gleitreibungskoeffizienten mit länger werdendem Gleitweg, d.h. länger Betriebsdauer einer erfindungsgemäßen Gleitplatte; und
- Figur 7:
- ein Diagramm betreffend den Verschleiß in Prozent einer erfindungsgemäßen und einer herkömmlichen Gleitplatte bei einem Verschleißweg von 4000 m.
Claims (11)
- Kunststoffgleitplatte für Schienenweichen, welche an einem Weichenstuhl der Weichen auswechselbar montierbar ist und eine Gleitebene für eine Zunge der Weiche definiert, dadurch gekennzeichnet, dass die Gleitplatte aus einem Kunststoffmaterial hergestellt ist, welches ein eine Matrix bildendes Polymer und ein in der Matrix dispergiertes Fluorkohlenwasserstoffpolymer umfasst, wobei das Fluorkohlenwasserstoffpolymer chemisch mit dem Matrixpolymer gekoppelt ist.
- Gleitplatte nach Anspruch 1, dadurch gekennzeichnet, dass die chemische Kopplung der Fluorkohlenwasserstoffpoylmere an das Matrixpolymer mittels Strahlenvernetzung erzeugt ist.
- Gleitplatte nach Anspruch loder 2, dadurch gekennzeichnet, dass das Matrixpolymer ausgewählt ist aus Polyamiden, Polyestern, insbesondere Polyethylenterephthalaten und Polybutylenterephthalaten, Polyphenylensulfiden, Polyacetalen, thermoplastischen Polyurethanen und/oder Polyetheretherketonen.
- Gleitplatte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Kunststoffmaterial der Gleitplatte Gleitreibung und Verschleiß mindernde Additive umfasst.
- Gleitplatte nach Anspruch 4, dadurch gekennzeichnet, dass die Gleitreibung und Verschleiß mindernden Additive ausgewählt sind aus MoS2, Graphit, Bornitrid, Polyimiden, Polyphenylensulfonen, Wachsen, Ölen und Fetten.
- Gleitplatte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Kunststoffmaterial der Gleitplatte festigkeitserhöhende Additive umfasst.
- Gleitplatte nach Anspruch 6, dadurch gekennzeichnet, dass die festigkeitserhöhenden Additive ausgewählt sind aus Kurz- und/oder Langfasern aus Glas, Kohlenstoff, Keflar, Metall, Hanf und Flachs.
- Gleitplatte nach Anspruch 6, dadurch gekennzeichnet, dass die in dem Kunststoffmaterial enthaltenen Fasern eine Vorzugsrichtung aufweisen, welche parallel zu der Bewegungsrichtung der Weichenzunge in der Gleitebene ausgerichtet ist.
- Gleitplatte nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Kunststoffmaterial der Gleitplatte Füllstoffe enthält.
- Gleitplatte nach Anspruch 9, dadurch gekennzeichnet, dass die Füllstoffe ausgewählt sind aus Kaolin, Talkum, Calciumcarbonat, Siliziumcarbid, Wollastonit, Glimmer oder TiO2.
- Gleitplatte nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das Kunststoffmaterial der Gleitplatte einen Schlagzähmodifier umfasst.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10116992A DE10116992C1 (de) | 2001-04-05 | 2001-04-05 | Kunststoffgleitplatte für Schienenweichen |
DE10116992 | 2001-04-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1247899A2 true EP1247899A2 (de) | 2002-10-09 |
EP1247899A3 EP1247899A3 (de) | 2003-09-17 |
EP1247899B1 EP1247899B1 (de) | 2005-05-04 |
Family
ID=7680502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02003611A Expired - Lifetime EP1247899B1 (de) | 2001-04-05 | 2002-02-16 | Kunststoffgleitplatte für Schienenweichen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1247899B1 (de) |
AT (1) | ATE294896T1 (de) |
DE (2) | DE10116992C1 (de) |
DK (1) | DK1247899T3 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013034868A1 (fr) * | 2011-09-08 | 2013-03-14 | Vossloh Cogifer (Société Anonyme) | Dispositif de manoeuvre ferroviaire sans graissage |
CN103741562A (zh) * | 2014-01-09 | 2014-04-23 | 王永升 | 一种铁路高速道岔复合型滑床台板 |
CN105803865A (zh) * | 2016-05-17 | 2016-07-27 | 沈阳鼎然新材料有限公司 | 一种热熔结合的铁路高速道岔复合型滑床台板 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA3137830A1 (en) * | 2020-11-06 | 2022-05-06 | Roller Bearing Company Of America, Inc. | Railway switch with lubricious liner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2631594B1 (de) | 1976-07-14 | 1977-12-29 | Wilfried Ensinger | Kunststoffgleitbelag fuer Schienenweichen |
DE3406726A1 (de) | 1984-02-24 | 1985-08-29 | Wilfried 7031 Nufringen Ensinger | Kunststoffgleitplatte fuer eine schienenweiche |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU75283A1 (de) * | 1976-07-01 | 1978-02-08 | ||
DE4400434A1 (de) * | 1994-01-10 | 1995-07-13 | Continental Ag | Kraftübertragungsriemen aus elastomerem Werkstoff mit günstige Gleiteigenschaften aufweisenden Riemenoberflächen |
-
2001
- 2001-04-05 DE DE10116992A patent/DE10116992C1/de not_active Expired - Fee Related
-
2002
- 2002-02-16 DK DK02003611T patent/DK1247899T3/da active
- 2002-02-16 EP EP02003611A patent/EP1247899B1/de not_active Expired - Lifetime
- 2002-02-16 DE DE50202966T patent/DE50202966D1/de not_active Expired - Lifetime
- 2002-02-16 AT AT02003611T patent/ATE294896T1/de active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2631594B1 (de) | 1976-07-14 | 1977-12-29 | Wilfried Ensinger | Kunststoffgleitbelag fuer Schienenweichen |
DE3406726A1 (de) | 1984-02-24 | 1985-08-29 | Wilfried 7031 Nufringen Ensinger | Kunststoffgleitplatte fuer eine schienenweiche |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013034868A1 (fr) * | 2011-09-08 | 2013-03-14 | Vossloh Cogifer (Société Anonyme) | Dispositif de manoeuvre ferroviaire sans graissage |
FR2979925A1 (fr) * | 2011-09-08 | 2013-03-15 | Vossloh Cogifer | Dispositif de manoeuvre ferroviaire sans graissage |
EA026938B1 (ru) * | 2011-09-08 | 2017-06-30 | Воссло Кожифер С.А. | Компонент железнодорожных путевых спецчастей, используемый без смазки |
AU2012306127B2 (en) * | 2011-09-08 | 2017-07-27 | Vossloh Cogifer (Societe Anonyme) | Lubrication-free railway shunting device |
CN103741562A (zh) * | 2014-01-09 | 2014-04-23 | 王永升 | 一种铁路高速道岔复合型滑床台板 |
CN105803865A (zh) * | 2016-05-17 | 2016-07-27 | 沈阳鼎然新材料有限公司 | 一种热熔结合的铁路高速道岔复合型滑床台板 |
Also Published As
Publication number | Publication date |
---|---|
ATE294896T1 (de) | 2005-05-15 |
DE10116992C1 (de) | 2002-08-29 |
DE50202966D1 (de) | 2005-06-09 |
EP1247899A3 (de) | 2003-09-17 |
DK1247899T3 (da) | 2005-08-29 |
EP1247899B1 (de) | 2005-05-04 |
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