EP1068396B1 - Dispositif de support pour rails de voie ferree - Google Patents
Dispositif de support pour rails de voie ferree Download PDFInfo
- Publication number
- EP1068396B1 EP1068396B1 EP99944178A EP99944178A EP1068396B1 EP 1068396 B1 EP1068396 B1 EP 1068396B1 EP 99944178 A EP99944178 A EP 99944178A EP 99944178 A EP99944178 A EP 99944178A EP 1068396 B1 EP1068396 B1 EP 1068396B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- stiffness
- rail
- plate
- prestressing
- 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
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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
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/62—Rail fastenings incorporating resilient supports
Definitions
- the present invention is in the field of mounting rail tracks. She relates more particularly to a device for fixing the rails in direct laying on a slab or on sleepers.
- Conventional rail fastening devices include at least one sole made of material elastic which gives elasticity to the wheel / rail assembly so that a some isolation from the environment from vibrations produced by stresses dynamics applied to the rails during the passage of vehicles.
- the first bending resonance frequency of the wheel / rail assembly is conditioned by the dynamic stiffness of the soles.
- This resonant frequency is inversely proportional to the anti-vibration performance of the rail fastening system: a low resonant frequency provides better vibration isolation than high resonant frequency.
- the first frequency is reduced resonance of the wheel / rail assembly, which gives good anti-vibration filtration.
- the best filtration is therefore obtained with the lowest dynamic stiffness for the soles.
- Publication WO 97/42376 describes a device for fixing a rail to a saddle metallic with interposition of an anti-vibration sole, the saddle itself being placed on a second anti-vibration sole and being fixed on a support by by means of adjustable fastening means consisting of clamping devices elastic acting directly on the saddle to fix the saddle and the second sole anti-vibration on the support so as to apply to the second anti-vibration sole a predetermined compression force so that it is in a prestressed state.
- This fixing device makes it possible to limit the static deformation of the rail to a value acceptable.
- the object of the present invention is to produce devices for fixing rails in laying direct not only on raft but also on steel or cross on a raft in concrete or in the ballast, which have close anti-vibration insulation performance of those obtained with a floating slab and which at the same time ensure a good stability for rails.
- the rail support device comprises a metal saddle resting on an anti-vibration sole and adjustable fixing means acting directly on the saddle to fix the saddle and the anti-vibration sole on a support structure, the adjustable fixing means comprising at least two elastic devices, each of them comprising a threaded rod and a set of adjustable preload acting vertically.
- the prestressing assembly includes a first spring having a first rigidity, a second spring disposed around the first spring and having a second stiffness higher than that of the first spring, the second spring being longer than the first spring, retaining means for retain the first and second springs so that each of them acts regardless of the other.
- the spring retaining means include a support washer supporting a first end of the first spring, a cap covering the first spring, said cap cooperating with the second end of the first spring and being arranged to further cooperate with a first end of the second spring, and a retaining washer cooperating with the second end of the second spring.
- the adjustable fixing means fix the saddle to the baseplate and pull towards each other.
- the pretension applied to the anti-vibration sole by the arrangement of the two springs maintains the operating point of the anti-vibration sole in the behavior zone quasi-linear of its deflection curve.
- the prestressing force becomes very low during of the wheel arch and the static deflections of the rail are limited while the desired anti-vibration isolation is ensured.
- the device according to the invention ensures thus, for fixing the rail, a high apparent static stiffness combined with a low dynamic stiffness.
- Another application of the device according to the invention is the installation of two curved rails, the invention making it possible to reduce squeal noise.
- a rail support device comprising a plate base 11 fixed in a concrete slab or a crosspiece (not shown) by bolts 12, possibly with an insert having a thickness chosen to allow the Upgrade.
- the interlayer 13 is used to level the head of the fixing nuts 12 and the reliefs of the base plate 11.
- the interlayer 15 serves to cover the openings in the interlayer 13.
- On the interlayer 15 is disposed an anti-vibration sole 17 having dimensions chosen according to the natural frequency of the track and on the anti-vibration sole 17 a saddle 19 is placed intended for fixing the rail.
- the reference sign 14 designates a lateral stop for saddle 19 and the reference sign 16 designates an adjustment element lateral.
- the saddle 19 is fixed to the base plate 11 via bolts, for example hammer head bolts such as bolt 18, and devices prestressing 20 whose function is to put the anti-vibration sole 17 in a state of prestressing.
- bolts for example hammer head bolts such as bolt 18, and devices prestressing 20 whose function is to put the anti-vibration sole 17 in a state of prestressing.
- the aforementioned saddle 19 is fixed in the raft, a cross member or any support structure.
- the prestressing device 20 is shown on a larger scale in FIG. 2.
- this device 20 comprises an integrated set of two springs 21 and 23: the spring 21 is chosen with a lower rigidity than that of the spring 23 which is arranged around the first.
- the spring 21 has for example a rigidity of 1800 N / cm while the spring 23 has for example a rigidity of 50 to 150 kN / cm.
- Spring 21 is wrapped of a sheet metal cap 25 to facilitate the adjustment of the preload and the return of the spring of greater rigidity 23.
- the assembly is retained between two shoulder washers 27 and 29.
- the spring 23 is completely free from prestressing when a wheel passes over the rail. At this time, the spring 23 therefore does not contribute to the dynamic stiffness of the wheel / rail / fixing system assembly.
- the prestressing device is adjusted taking into account firstly performance in anti-vibration isolation (resonant frequency wheel / rail) requested. These performances generally impose a dynamic stiffness low. From this dynamic stiffness we deduce the requested static stiffness, which is a function of the material of which the anti-vibration sole is made. With this stiffness static, we generally obtain static displacements of the important rail, which are not not tolerated.
- the prestressing device is then adjusted so that it applies to the anti-vibration sole preload such as the difference between the displacement of the rail before prestressing and the displacement of the rail after prestressing remains less than rail movement tolerated (generally 3 mm).
- the sole is chosen from way that it works in the quasi-linear area of its deflection curve with the prestress and the additional load applied to it when passing a wheel.
- a dynamic stiffness of the anti-vibration sole in the fastening system of approximately 10 kN / mm (determined by the finite element method). Then using for the anti-vibration sole a product having a static stiffness equal to the dynamic stiffness, with the axle load considered (180 kN), a rail deflection of 4.5 mm is obtained (FIG. 3).
- a quasi-isotropic microcellular product such than polyurethane with a mixed structure.
- the prestressing device 20 is adjusted so as to apply to the anti-vibration soleplate a pre-grass in the order of 30 kN with two springs 23 of 15 kN / mm tablets both of 1 mm, the deflection of the rail when passing a wheel is of the order of 1.5 mm, which is perfectly acceptable. During the passage of the wheel, the two springs 23 no longer exert a prestressing force. Only the springs of recall 21 then exerts a weak prestressing effort and the system remains thus dynamically very flexible.
- FIG. 4 shows a typical loading curve of an anti-vibration sole suitable for an axle load of around 100 to 120 kN, for example.
- the prestress applied by the device 20 is then chosen to be equal to this minimum load.
- the load can vary between 20 and 30 kN.
- the prestress chosen (20 kN per example) sets the minimum operating point of the system, for which a rail deflection of ⁇ 4.5 mm. This prestressing is carried out for example with two springs 23 of 10 kN / mm which are both compressed of 1 mm.
- the two prestressing springs 23 in the prestressing device 20 according to the invention are completely released during the passage of the wheel.
- the invention allows thus achieving optimal operating conditions on anti-vibration supports, that is to say a very low dynamic rigidity while limiting the deflection of the rail to the value tolerated, for example ⁇ 3 mm (instead of ⁇ 8 mm).
- Tests were carried out on a section of rail approximately 6 m long with seven points of fixing fitted with a prestressing device according to the invention in order to check the static and dynamic behavior of the whole.
- the supports used are of the type SYL.S65.XS / 300.180.50.
- the curve of FIG. 5 shows that the static rigidity of the sample below a load of 15.0 kN is on average 3600 N / mm and the deflection under a load of 25 kN is approximately 8 mm.
- the curve of FIG. 6 watch that the dynamic rigidity is of the order of 5600 N / m. Maximum compression force measured is around 25 kN.
- the prestressing has been set at 15 kN.
- FIG. 3 shows in in fact that, for a rise to 25 kN, the deflection is of the order of 3 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
- Vibration Prevention Devices (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Description
Claims (7)
- Dispositif de support de rail pour voie ferrée, comprenant une semelle anti-vibratoire (17) sur laquelle repose une selle métallique (19) pour porter un rail, et des moyen de fixation réglables agissant directement sur la selle pour fixer la selle (19) et la semelle anti-vibratoire (17) sur une structure de support, les moyens de fixation réglables appliquant un effort de précontrainte à la semelle anti-vibratoire (17), caractérisé en ce que les moyens de fixation réglables comprennent au moins deux dispositifs élastiques, chacun d'eux comprenant une tige filetée (18) et un ensemble de précontrainte réglable agissant verticalement (20), ledit ensemble de précontrainte (20) comprenant un premier ressort (21) ayant une première rigidité, un deuxième ressort (23) disposé autour du premier ressort (21) et ayant une deuxième rigidité plus élevée que celle du premier ressort (21), et des moyens de retenue (27, 29) pour retenir lesdits premier et deuxième ressorts de manière que chacun d'eux agisse indépendamment de l'autre.
- Dispositif suivant la revendication 1, caractérisé en ce que les moyens de retenue des ressorts comprennent une rondelle de support (27) supportant une première extrémité du premier ressort (21), une coiffe (25) couvrant le premier ressort (21), ladite coiffe (25) coopérant avec la seconde extrémité du premier ressort (21) et étant agencé pour coopérer en outre avec une première extrémité du deuxième ressort (23), et une rondelle de butée (29) coopérant avec la seconde extrémité du deuxième ressort (23).
- Dispositif suivant l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre une plaque de base (11) disposée en dessous de la semelle anti-vibratoire (17), avec éventuellement interposition d'un intercalaire (13) pour niveler les reliefs, la plaque de base (11) précitée étant destinée à être fixée à une structure de support, les moyens de fixation réglables (18, 20) précités tirant la selle (19) et la plaque de base (11) l'une vers l'autre.
- Dispositif suivant la revendication 3, caractérisé en ce que la plaque de base (11) est fixée à la structure de support avec interposition d'un intercalaire ayant une épaisseur choisie pour mettre la voie à niveau.
- Dispositif suivant l'une quelconque des revendications 3 et 4, caractérisé en ce que la plaque de base (11) présente des saillies latérales et en ce que le dispositif comprend en outre des moyens (14, 16) coopérant avec lesdites saillies latérales pour bloquer et régler latéralement la position de la selle (19) sur la plaque de base (11).
- Dispositif de précontrainte pour la fixation d'un dispositif de support de rail de voie ferrée, caractérisé en ce qu'il comprend une tige filetée (18) et un ensemble de précontrainte réglable (20) agissant verticalement, ledit ensemble de précontrainte (20) comprenant un premier ressort (21) ayant une première rigidité, un deuxième ressort (23) disposé autour du premier ressort et ayant une deuxième rigidité plus élevée que celle du premier ressort (21), et des moyens de retenue (27, 29) pour retenir les premier et deuxième ressorts précités de manière que chacun d'eux agisse indépendamment de l'autre.
- Dispositif de précontrainte suivant la revendication 6, caractérisé en ce que les moyens de retenue des ressorts (21, 23) comprennent une rondelle de support (27) supportant une première extrémité du premier ressort (21), une coiffe (25) couvrant le premier ressort (21), ladite coiffe (25) coopérant avec la seconde extrémité dudit premier ressort (21) et étant agencé pour coopérer en outre avec une première extrémité du deuxième ressort (23), et une rondelle de butée (29) coopérant avec la seconde extrémité du deuxième ressort (23).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE9900083 | 1999-02-05 | ||
BE9900083A BE1012466A5 (fr) | 1999-02-05 | 1999-02-05 | Dispositif de support pour rails de voie ferree. |
PCT/BE1999/000120 WO2000046448A1 (fr) | 1999-02-05 | 1999-09-17 | Dispositif de support pour rails de voie ferree |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1068396A1 EP1068396A1 (fr) | 2001-01-17 |
EP1068396B1 true EP1068396B1 (fr) | 2004-11-17 |
Family
ID=3891744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99944178A Expired - Lifetime EP1068396B1 (fr) | 1999-02-05 | 1999-09-17 | Dispositif de support pour rails de voie ferree |
Country Status (7)
Country | Link |
---|---|
US (1) | US6325301B1 (fr) |
EP (1) | EP1068396B1 (fr) |
AT (1) | ATE282735T1 (fr) |
BE (1) | BE1012466A5 (fr) |
DE (1) | DE69921978T2 (fr) |
ES (1) | ES2230885T3 (fr) |
WO (1) | WO2000046448A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007147581A2 (fr) | 2006-06-20 | 2007-12-27 | Edilon)(Sedra Gmbh | Assiette des rails élastique continue |
DE102006028740B4 (de) * | 2006-06-20 | 2015-02-26 | Sedra Gmbh | Kontinuierliche elastische Schienenlagerung |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10052534A1 (de) * | 2000-10-23 | 2002-04-25 | Hilti Ag | Schienenanbinder |
BE1015814A5 (fr) * | 2003-12-10 | 2005-09-06 | Vanhonacker Patrick | Systeme de pose de voie ferree et traverse pour un tel systeme. |
US20120043698A1 (en) * | 2010-08-18 | 2012-02-23 | Douglas Delmonico | Methods for construction of slab track railroads |
US9151309B2 (en) * | 2010-09-02 | 2015-10-06 | Thomas & Betts International Llc | Expansion clamp |
CN104251238A (zh) * | 2013-06-28 | 2014-12-31 | 鸿富锦精密电子(天津)有限公司 | 风扇模组及其减震件 |
CN109235160A (zh) * | 2018-09-11 | 2019-01-18 | 兰州交通大学 | 一种具有预紧弹性结构的减振轨道 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2421502A (en) * | 1944-01-08 | 1947-06-03 | Vincel Paul Hayes | Concrete spring tie |
DE3512987A1 (de) * | 1985-04-11 | 1986-10-16 | Phoenix Ag, 2100 Hamburg | Elastisches schienenlager |
US4844338A (en) * | 1986-12-05 | 1989-07-04 | Lord Corporation | Rail fastener |
US5314115A (en) * | 1992-05-27 | 1994-05-24 | Bombardier Inc. | Rail cross-tie for LIM transit system |
FR2737511B1 (fr) * | 1995-08-02 | 1997-10-24 | Regie Autonome Transports | Dispositif pour la pose d'un rail sur une assise en beton |
ES2148802T3 (es) * | 1995-10-20 | 2000-10-16 | Butzbacher Weichenbau Gmbh | Construccion de superestructura. |
BE1010283A5 (fr) * | 1996-05-03 | 1998-05-05 | Vanhonacker Patrick | Procede de fixation de rails de voie ferree. |
DE29619480U1 (de) * | 1996-11-11 | 1997-01-09 | Hilti Ag, Schaan | Schienenbefestigung |
-
1999
- 1999-02-05 BE BE9900083A patent/BE1012466A5/fr not_active IP Right Cessation
- 1999-09-17 EP EP99944178A patent/EP1068396B1/fr not_active Expired - Lifetime
- 1999-09-17 ES ES99944178T patent/ES2230885T3/es not_active Expired - Lifetime
- 1999-09-17 WO PCT/BE1999/000120 patent/WO2000046448A1/fr active IP Right Grant
- 1999-09-17 AT AT99944178T patent/ATE282735T1/de not_active IP Right Cessation
- 1999-09-17 DE DE69921978T patent/DE69921978T2/de not_active Expired - Fee Related
-
2000
- 2000-08-31 US US09/652,239 patent/US6325301B1/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007147581A2 (fr) | 2006-06-20 | 2007-12-27 | Edilon)(Sedra Gmbh | Assiette des rails élastique continue |
DE102006028740B4 (de) * | 2006-06-20 | 2015-02-26 | Sedra Gmbh | Kontinuierliche elastische Schienenlagerung |
Also Published As
Publication number | Publication date |
---|---|
ATE282735T1 (de) | 2004-12-15 |
ES2230885T3 (es) | 2005-05-01 |
EP1068396A1 (fr) | 2001-01-17 |
BE1012466A5 (fr) | 2000-11-07 |
US6325301B1 (en) | 2001-12-04 |
DE69921978T2 (de) | 2005-11-24 |
DE69921978D1 (de) | 2004-12-23 |
WO2000046448A1 (fr) | 2000-08-10 |
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