EP0761879B1 - Sound absorption for railway rails - Google Patents
Sound absorption for railway rails Download PDFInfo
- Publication number
- EP0761879B1 EP0761879B1 EP19960401872 EP96401872A EP0761879B1 EP 0761879 B1 EP0761879 B1 EP 0761879B1 EP 19960401872 EP19960401872 EP 19960401872 EP 96401872 A EP96401872 A EP 96401872A EP 0761879 B1 EP0761879 B1 EP 0761879B1
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- EP
- European Patent Office
- Prior art keywords
- sound absorber
- absorber according
- rail
- support
- active mass
- 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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
Definitions
- the present invention relates to a noise for rails of a railway track.
- iron-on-iron contact between the tire bandage of a train and the rails of a railroad is a source of noise resulting from vibratory excitation of wheels and rails. These noises turnover are an important factor overall noises generated when a train passes.
- one solution is to have panels or screens phonic on either side of the track.
- Another solution is to change the profile of the rails of the train tracks and / or train wheels.
- the object of the invention is to design a dynamic noise absorber or damper of a new structure capable of fighting effectively against road noise.
- the invention provides an absorber noise for rails of a railway track, the rails being fixed on sleepers resting on a ballast, this noise absorber being characterized in that it is consisting of an active mass added to the skid of rail with interposition of a resilient element, the noise absorber being positioned in the area of the rail located between two consecutive sleepers.
- the active mass of the noise absorber is constituted by a metallic body of cylindrical shape extending parallel to the rails.
- the resilient element consists of a coating that surrounds the active mass of the absorber noise.
- the coating constituting the resilient element is in the form of a layer which covers the active mass over its entire length.
- the coating forming the element resilient is discontinuous and made in the form regularly spaced rings along the mass active.
- the active mass of the noise absorber is for example made of steel, and the resilient element is made of a plastomer or elastomer material.
- the noise damper is mounted in a housing of a metal support attached to the shoe rail and fixed to it, the support being a block of generally rectangular shape crossed rectangle right through through a central channel forming the housing of the noise absorber.
- the housing of the support which receives the noise absorber leads to the outside of the support through a slot radial whose width is adjustable, by means of screws example, to immobilize the noise absorber in its housing on the one hand, and to adjust the frequency of resonance of the noise absorber on the other hand.
- the noise absorber is previously mounted in a tubular element which is force fitted into the support housing.
- the absorbers of noise can be mounted on either side of each rail of the track, or on one side of the rails.
- noise absorbers are not necessarily mounted between all sleepers but can be mounted than both ties for example.
- noise absorber provides efficiency vibratory both vertically and in the transverse direction, its resonant frequency being much the same in both directions.
- a railway track is consisting of two parallel rails 1 fixed on sleepers 2 resting on a ballast 3.
- the representation of the railway was intentionally limited to a single rail 1 for reasons of simplification.
- a rail 1 is formed by a profile metallic comprising a central core 5, one of which end is extended by a mushroom 6 forming the rolling surface for the tire of the wheels of a train, and the other end of which extends by a foot rail or shoe 7 which extends on either side of the core 5 and is fixed to each cross member 2 by means of lag screw 9, for example.
- a noise absorber or damper 10 according to the invention comprises an active mass 12 of form cylindrical which is surrounded by a resilient element 14 which extends over part or the entire length of the active mass 12.
- resilient element 14 is a covering in the form a layer 15 which coats the active mass 12 over the entire the length of it.
- this coating is discontinuous and split into several rings 16 which are for example regularly spaced along the active mass 12.
- a ring 16 is at least provided at each end of the active mass 12.
- the active mass 12 is metallic, e.g. steel, and the resilient element 14 is made of a polymer or elastomer material, for example example.
- each noise absorber 10 is mounted in a housing 20 of complementary shape which is provided in a support metallic 22 advantageously made of aluminum.
- Each support 22 is a shape block generally rectangular parallelepiped axially pierced by a central channel, of circular cross section, which forms the housing 20 of the noise absorber 10.
- the housing 20 opens radially outward through a slot 24 which extends over the entire length of the support 22.
- Locking means such as screws 25 intended for engage in holes 26, reduce the width of the slot 24 to immobilize the absorber of noise 10 in its housing 20 on the one hand, and to adjust the resonance frequency of the noise absorber 10 on the other hand.
- each support 22 has a cavity 28 which extends over the entire the length of the support and whose profile, in section right, is generally complementary to that of the skate rail 7.
- a hole 29 which is drilled perpendicular to the housing 20 leads to the two front 22c and rear 22d of support 22 for receiving a fixing means, such as a bolt 30 ( Figure 5) to immobilize simultaneously on a pad 7 two supports 22 mounted on either side of a rail 1.
- noise absorbers 10 are reported on rails 1 in space located between two consecutive sleepers 2. More specifically, with particular reference to FIG. 5, noise absorbers 10 are reported on both sides of a rail 1 and their assembly is carried out as explained below.
- Each noise absorber 10 is added by so as to engage the rail shoe 7 in the notch 28 formed on the front side face 22c of the support 22.
- Two noise absorbers 10 are mounted opposite on either side of rail 1 and are joined to each other by the bolt 30 to immobilize them on the pad 7.
- the masses active 12 noise absorbers 10 then extend parallel to rail 1.
- each noise absorber 10 is mounted on one side of the rail 1.
- each noise absorber 10 can be fixed on the rail 1 by wedging the shoe 7 in the notch 28 of the support 22 of each absorber 10.
- each absorber of noise 10 has a resonant or tuning frequency which depends in particular on the thickness of the resilient element 14 and the length over which it covers the mass active 12.
- the screws 25 which allow the noise absorber 10 to be immobilized in the housing 20 of its support 22 as a result of a decrease of the width of the slot 24, also makes it possible to adjust the resonant frequency by varying the width from this slot 24.
- Figure 6 illustrates graphically the variations of the resonant frequency F of a noise absorber as a function of the value of pinch P of slot 24, this pinch value corresponding to the reduction in the width of the slot 24 obtained by means of screws 25.
- Curve C corresponding shows that the resonant frequency increases with the pinch value.
- This curve C has been obtained for a given configuration, this configuration corresponding to an active mass 12 of 200 mm in length and 50 mm in diameter, with one element resilient 14 with a thickness of 4.5 mm covering the active mass 12 over its entire length and consisting of a elastomer having a dynamic modulus of the order of 1.2 MPa (shear modulus).
- a noise damper 10 can have a length between 100 and 300 mm, for example 200 mm, this length being of course less than the distance between two sleepers 2, its diameter is around 50 mm, and the thickness of the resilient element 14 is of the order of 5 mm.
- a noise absorber 10 can be housed in a tubular element 35, and this assembly is mounted at force in the housing 20 of the support 22.
- the slot 24 and the screws 25 are removed, i.e. that it is not possible in this case to be able to adjust the resonance frequency of the noise absorber 10.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Description
La présente invention concerne un absorbeur de bruit pour rails d'une voie ferrée.The present invention relates to a noise for rails of a railway track.
D'une manière générale, le contact fer sur fer entre le bandage des roues d'un train et les rails d'une voie ferrée, est une source de bruit résultant d'une excitation vibratoire des roues et des rails. Ces bruits de roulement sont un facteur important dans l'ensemble des bruits générés au passage d'un train.Generally speaking, iron-on-iron contact between the tire bandage of a train and the rails of a railroad, is a source of noise resulting from vibratory excitation of wheels and rails. These noises turnover are an important factor overall noises generated when a train passes.
Pour lutter contre une telle source de bruit, une solution consiste à disposer des panneaux ou écrans phoniques de part et d'autre de la voie. Une autre solution consiste à modifier le profil des rails de la voie ferrée et/ou des bandages des roues du train.To combat such a source of noise, one solution is to have panels or screens phonic on either side of the track. Another solution is to change the profile of the rails of the train tracks and / or train wheels.
Le but de l'invention est de concevoir un absorbeur ou amortisseur dynamique de bruit d'une structure nouvelle et capable de lutter efficacement contre les bruits de roulement.The object of the invention is to design a dynamic noise absorber or damper of a new structure capable of fighting effectively against road noise.
A cet effet, l'invention propose un absorbeur de bruit pour rails d'une voie ferrée, les rails étant fixés sur des traverses reposant sur un ballast, cet absorbeur de bruit étant caractérisé en ce qu'il est constitué d'une masse active rapportée sur le patin de rail avec interposition d'un élément résilient, l'absorbeur de bruit étant positionné dans la zone du rail située entre deux traverses consécutives.To this end, the invention provides an absorber noise for rails of a railway track, the rails being fixed on sleepers resting on a ballast, this noise absorber being characterized in that it is consisting of an active mass added to the skid of rail with interposition of a resilient element, the noise absorber being positioned in the area of the rail located between two consecutive sleepers.
Selon une autre caractéristique de l'invention, la masse active de l'absorbeur de bruit est constituée par un corps metallique de forme cylindrique s'étendant parallèlement aux rails.According to another characteristic of the invention, the active mass of the noise absorber is constituted by a metallic body of cylindrical shape extending parallel to the rails.
Selon une autre caractéristique de l'invention, l'élément résilient est constitué d'un revêtement qui entoure la masse active de l'absorbeur de bruit.According to another characteristic of the invention, the resilient element consists of a coating that surrounds the active mass of the absorber noise.
Selon un exemple de réalisation, le revêtement constituant l'élément résilient est sous la forme d'une couche qui recouvre la masse active sur toute sa longueur.According to an exemplary embodiment, the coating constituting the resilient element is in the form of a layer which covers the active mass over its entire length.
En variante, le revêtement formant l'élément résilient est discontinu et réalisé sous la forme d'anneaux régulièrement espacés le long de la masse active.Alternatively, the coating forming the element resilient is discontinuous and made in the form regularly spaced rings along the mass active.
La masse active de l'absorbeur de bruit est par exemple réalisée en acier, et l'élément résilient est en un matériau plastomère ou élastomère.The active mass of the noise absorber is for example made of steel, and the resilient element is made of a plastomer or elastomer material.
Selon une autre caractéristique de l'invention, l'amortisseur de bruit est monté dans un logement d'un support métallique rapporté sur le patin de rail et fixé à celui-ci, le support étant un bloc de forme globalement parallélépipédique rectangle traversé de part en part par un canal central formant le logement de l'absorbeur de bruit.According to another characteristic of the invention, the noise damper is mounted in a housing of a metal support attached to the shoe rail and fixed to it, the support being a block of generally rectangular shape crossed rectangle right through through a central channel forming the housing of the noise absorber.
Selon un mode de réalisation, le logement du support qui reçoit l'absorbeur de bruit, débouche à l'extérieur du support par l'intermédiaire d'une fente radiale dont la largeur est réglable, au moyen de vis par exemple, pour immobiliser l'absorbeur de bruit dans son logement d'une part, et pour régler la fréquence de résonance de l'absorbeur de bruit d'autre part.According to one embodiment, the housing of the support which receives the noise absorber, leads to the outside of the support through a slot radial whose width is adjustable, by means of screws example, to immobilize the noise absorber in its housing on the one hand, and to adjust the frequency of resonance of the noise absorber on the other hand.
En variante de ce mode de réalisation, l'absorbeur de bruit est préalablement monté dans un élément tubulaire qui est emmanché à force dans le logement du support.As a variant of this embodiment, the noise absorber is previously mounted in a tubular element which is force fitted into the support housing.
D'une manière générale, les absorbeurs de bruit peuvent être montés de part et d'autre de chaque rail de la voie ferrée, ou d'un seul côté des rails. En outre, les absorbeurs de bruit ne sont pas nécessairement montés entre toutes traverses mais peuvent être montés que toutes les deux traverses par exemple.In general, the absorbers of noise can be mounted on either side of each rail of the track, or on one side of the rails. In in addition, noise absorbers are not necessarily mounted between all sleepers but can be mounted than both ties for example.
Selon un avantage important de l'invention, l'absorbeur de bruit permet d'obtenir une efficacité vibratoire aussi bien dans le sens vertical que dans le sens transversal, sa fréquence de résonance étant sensiblement la même dans ces deux directions.According to an important advantage of the invention, noise absorber provides efficiency vibratory both vertically and in the transverse direction, its resonant frequency being much the same in both directions.
D'autres caractéristiques, avantages et détails de l'invention ressortiront de la description explicative qui va suivre, faite en référence aux dessins annexés donnés à titre d'exemple et dans lesquels :
- la figure 1 est une vue en perspective partielle d'un rail d'une voie ferrée équipé d'absorbeurs de bruit selon l'invention,
- la figure 2 est une vue en coupe longitudinale d'un premier mode de réalisation d'un absorbeur de bruit selon l'invention,
- la figure 3 est une variante de l'absorbeur de bruit illustré à la figure 2,
- la figure 4 est une vue en perspective d'un amortisseur de bruit monté sur son support,
- la figure 5 est une vue en coupe suivant la ligne V-V de la figure 1,
- la figure 6 représente graphiquement les variations de la fréquence de résonance de l'absorbeur de bruit en fonction de la réduction de la largeur d'une fente radiale débouchant dans le logement du support qui reçoit l'absorbeur de bruit, et
- la figure 7 est une vue en coupe longitudinale d'un absorbeur de bruit monté à l'intérieur d'un élément tubulaire destiné à être emmanché à force dans un logement du support de l'absorbeur de bruit.
- FIG. 1 is a partial perspective view of a rail of a railroad track equipped with noise absorbers according to the invention,
- FIG. 2 is a view in longitudinal section of a first embodiment of a noise absorber according to the invention,
- FIG. 3 is a variant of the noise absorber illustrated in FIG. 2,
- FIG. 4 is a perspective view of a noise damper mounted on its support,
- FIG. 5 is a sectional view along the line VV of FIG. 1,
- FIG. 6 graphically represents the variations in the resonance frequency of the noise absorber as a function of the reduction in the width of a radial slot opening into the housing of the support which receives the noise absorber, and
- Figure 7 is a longitudinal sectional view of a noise absorber mounted inside a tubular element intended to be force fitted into a housing of the support of the noise absorber.
D'une manière classique, une voie ferrée est constituée de deux rails parallèles 1 fixés sur des traverses 2 reposant sur un ballast 3. Sur la figure 1, la représentation de la voie ferrée a été volontairement limitée à un seul rail 1 pour des raisons de simplification.In a conventional manner, a railway track is consisting of two parallel rails 1 fixed on sleepers 2 resting on a ballast 3. In FIG. 1, the representation of the railway was intentionally limited to a single rail 1 for reasons of simplification.
Un rail 1 est constitué par un profilé
métallique comprenant une âme centrale 5 dont une
extrémité se prolonge par un champignon 6 formant la
surface de roulement pour le bandage des roues d'un
train, et dont l'autre extrémité se prolonge par un pied
de rail ou patin 7 qui s'étend de part et d'autre de
l'âme 5 et est fixé sur chaque traverse 2 au moyen de
tire-fond 9, par exemple.A rail 1 is formed by a profile
metallic comprising a
D'une manière générale, en se reportant à la
figure 2, un absorbeur ou amortisseur de bruit 10 selon
l'invention comprend une masse active 12 de forme
cylindrique qui est entourée d'un élément résilient 14
qui s'étend sur une partie ou sur toute la longueur de la
masse active 12.Generally speaking, referring to the
Figure 2, a noise absorber or
Dans l'exemple illustré à la figure 2,
l'élément résilient 14 est un revêtement sous la forme
d'une couche 15 qui enrobe la masse active 12 sur toute
la longueur de celle-ci. En variante, comme cela est
illustré à la figure 3, ce revêtement est discontinu et
scindé en plusieurs anneaux 16 qui sont par exemple
régulièrement espacés le long de la masse active 12.
Avantageusement, un anneau 16 est au moins prévu à chaque
extrémité de la masse active 12.In the example shown in Figure 2,
D'une manière générale, la masse active 12 est
métallique, en acier par exemple, et l'élément résilient
14 est en un matériau polymère ou élastomère, par
exemple.Generally, the
En se reportant à la figure 4, chaque
absorbeur de bruit 10 est monté dans un logement 20 de
forme complémentaire qui est ménagé dans un support
métallique 22 avantageusement en aluminium.Referring to Figure 4, each
noise absorber 10 is mounted in a
Chaque support 22 est un bloc de forme
globalement parallélépipédique rectangle percé axialement
par un canal central, à section droite circulaire, qui
forme le logement 20 de l'absorbeur de bruit 10. Le
logement 20 débouche radialement vers l'extérieur par une
fente 24 qui s'étend sur toute la longueur du support 22.
Des moyens de blocage, tels que des vis 25 destinées à
s'engager dans des orifices 26, permettent de réduire la
largeur de la fente 24 pour immobiliser l'absorbeur de
bruit 10 dans son logement 20 d'une part, et pour régler
la fréquence de résonance de l'absorbeur de bruit 10
d'autre part.Each
Pour des raisons qui faciliteront
l'explication du montage des absorbeurs de bruit 10 sur
le patin 7 des rails 1, on distinguera sur le support 22
de la figure 4 : deux faces opposées respectivement
supérieure 22a et inférieure 22b, deux faces latérales
respectivement avant 22c et arrière 22d, et deux faces
d'extrémité 22e.For reasons that will facilitate
the explanation of the installation of the noise absorbers 10 on
the pad 7 of the rails 1, a distinction will be made on the
Dans ces conditions :
- le canal définissant le
logement 20 dusupport 22 débouche aux deux faces d'extrémité 22e, - la
fente 24 débouche à la face arrière 22d dusupport 22, - les
orifices 26 sont ménagées au droit de lafente 24 pour recevoir les vis de blocage et deréglage 25.
- the channel defining the
housing 20 of thesupport 22 opens at the two end faces 22e, - the
slot 24 opens at therear face 22d of thesupport 22, - the
orifices 26 are formed in line with theslot 24 to receive the locking and adjustingscrews 25.
En outre, la face latérale avant 22c de chaque
support 22 présente une cavité 28 qui s'étend sur toute
la longueur du support et dont le profil, en section
droite, est globalement complémentaire de celui du patin
de rail 7. Enfin, un orifice 29 qui est percé
perpendiculairement au logement 20 débouche sur les deux
faces avant 22c et arrière 22d du support 22 pour
recevoir un moyen de fixation, tel qu'un boulon 30
(figure 5) pour immobiliser simultanément sur un patin 7
deux supports 22 montés de part et d'autre d'un rail 1.In addition, the
D'une manière générale, les absorbeurs de
bruit 10 sont rapportés sur les rails 1 dans l'espace
situé entre deux traverses consécutives 2. Plus
précisément, en se reportant notamment à la figure 5, des
absorbeurs de bruit 10 sont rapportés de part et d'autre
d'un rail 1 et leur montage s'effectue comme explicité
ci-après. In general, the absorbers of
Chaque absorbeur de bruit 10 est rapporté de
manière à engager le patin de rail 7 dans l'encoche 28
ménagée à la face latérale avant 22c du support 22. Deux
absorbeurs de bruit 10 sont montés en vis-à-vis de part
et d'autre du rail 1 et sont réunis l'un à l'autre par le
boulon 30 pour les immobiliser sur le patin 7. Les masses
actives 12 des absorbeurs de bruit 10 s'étendent alors
parallèlement au rail 1.Each noise absorber 10 is added by
so as to engage the rail shoe 7 in the
Dans l'exemple de réalisation de la figure 1,
deux absorbeurs de bruit 10 sont montés d'un seul côté du
rail 1. Dans ce cas, chaque absorbeur de bruit 10 peut
être fixé sur le rail 1 par coincement du patin 7 dans
l'encoche 28 du support 22 de chaque absorbeur 10.In the embodiment of Figure 1,
two
D'une manière générale, chaque absorbeur de
bruit 10 a une fréquence de résonance ou d'accord qui
dépend notamment de l'épaisseur de l'élément résilient 14
et de la longueur sur laquelle il recouvre la masse
active 12. Comme indiqué précédemment, les vis 25 qui
permettent d'immobiliser l'absorbeur de bruit 10 dans le
logement 20 de son support 22 par suite d'une diminution
de la largeur de la fente 24, permet également d'ajuster
la fréquence de de résonance en faisant varier la largeur
de cette fente 24.In general, each absorber of
A titre d'exemple, la figure 6 illustre
graphiquement les variations de la fréquence de résonance
F d'un absorbeur de bruit en fonction de la valeur de
pincement P de la fente 24, cette valeur de pincement
correspondant à la diminution de la largeur de la fente
24 obtenue au moyen des vis 25. La courbe C
correspondante montre que la fréquence de résonance
augmente avec la valeur de pincement. Cette courbe C a
été obtenue pour une configuration donnée, cette
configuration correspondant à une masse active 12 de 200
mm de longueur et d'un diamètre de 50 mm, avec un élément
résilient 14 d'une épaisseur de 4,5 mm recouvrant la
masse active 12 sur toute sa longueur et constitué par un
élastomère ayant un module dynamique de l'ordre de 1,2
MPa (module de cisaillement).For example, Figure 6 illustrates
graphically the variations of the resonant frequency
F of a noise absorber as a function of the value of
pinch P of
A titre d'exemple, un amortisseur de bruit 10
peut avoir sur une longueur comprise en 100 et 300 mm,
par exemple 200 mm, cette longueur étant bien entendu
inférieure à la distance séparant deux traverses
consécutives 2, son diamètre est de l'ordre de 50 mm, et
l'épaisseur de l'élément résiliant 14 est de l'ordre de 5
mm.For example, a
Selon une variante de réalisation illustrée à
la figure 7, un absorbeur de bruit 10 peut être logé dans
un élément tubulaire 35, et cet ensemble est monté à
force dans le logement 20 du support 22. Dans ce cas, la
fente 24 et les vis 25 sont supprimées, c'est-à-dire
qu'il n'est pas possible dans ce cas de pouvoir ajuster
la fréquence de résonance de l'absorbeur de bruit 10.According to an alternative embodiment illustrated in
In FIG. 7, a
D'une manière générale, on peut associer sur
un même rail 1 plusieurs absorbeurs de bruit 10 calés sur
des fréquences différentes selon la nature de la voie
ferrée.In general, we can associate on
the same rail 1
Claims (10)
- Sound absorber for the rails (1) of a railway, the rails (1) being fixed to sleepers (2) resting on ballast (3), characterised in that the sound absorber consists of an active mass (12) attached to the rail flange (7) via an interposed resilient member (14), the sound absorber being positioned in the section of the rail (1) located between two consecutive sleepers (2).
- Sound absorber according to claim 1, characterised in that the active mass (12) consists of a cylindrical metal body extending parallel to the rails (1).
- Sound absorber according to claim 2, characterised in that the resilient member (14) consists of a covering (15, 16) which surrounds the active mass (12).
- Sound absorber according to claim 3, characterised in that the covering is in the form of a layer (15) which covers the active mass (12) over its entire length.
- Sound absorber according to claim 3, characterised in that the covering is discontinuous and is in the form of rings (16), which are for example uniformly spaced along the active mass (12).
- Sound absorber according to one of claims 1 to 5, characterised in that the resilient member (14) is made of a plastomeric or elastomeric material.
- Sound absorber according to any one of the preceding claims, characterised in that it is mounted in a recess (20) in a support (22) abutting on the flange (7) and attached thereto, said support (22) being a block the overall shape of which is a rectangular cuboid through which a central channel passes from one side to the other to form said recess (20).
- Sound absorber according to claim 7, characterised in that the recess (20) opens radially outwards through a slot (24) which extends over the entire length of the support (22), and in that screws (25) make it possible to reduce the width of this slot (24) in order to immobilise the sound absorber in its recess (20), on the one hand, and to adjust the resonating frequency of the absorber, on the other hand.
- Sound absorber according to any one of the preceding claims, characterised in that absorbers are mounted on either side of each rail (1), two opposing absorbers being fixedly secured to the flange (7) by attachment means (30) such as a bolt.
- Sound absorber according to any one of claims 1 to 8, characterised in that sound absorbers are mounted on the same side of a rail (1), the support (22) of each absorber being wedged onto the rail flange (7) in order to immobilise it.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9510430 | 1995-09-06 | ||
| FR9510430A FR2738263B1 (en) | 1995-09-06 | 1995-09-06 | NOISE ABSORBER FOR RAILS OF A RAIL TRACK |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0761879A1 EP0761879A1 (en) | 1997-03-12 |
| EP0761879B1 true EP0761879B1 (en) | 2000-06-28 |
Family
ID=9482306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19960401872 Expired - Lifetime EP0761879B1 (en) | 1995-09-06 | 1996-09-02 | Sound absorption for railway rails |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0761879B1 (en) |
| DE (1) | DE69609025T2 (en) |
| FR (1) | FR2738263B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985051B (en) * | 2003-07-11 | 2011-08-17 | 潘得路有限责任公司 | Tuned absorbers for rails |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9719864D0 (en) | 1997-09-19 | 1997-11-19 | Univ Southampton | Rail damper |
| BE1013746A3 (en) | 2000-10-10 | 2002-07-02 | Composite Damping Material Nv | VIBRATION DAMPER FOR rails. |
| GB2399123B (en) * | 2003-03-05 | 2006-03-01 | Corus Uk Ltd | Rail damper |
| GB2404942A (en) * | 2003-07-29 | 2005-02-16 | Corus Uk Ltd | Damping of rail tracks |
| GB2421265A (en) * | 2004-12-16 | 2006-06-21 | Tiflex Ltd | Railway rail with vibration damper |
| WO2009059512A1 (en) | 2007-11-07 | 2009-05-14 | Wai Lun Ho | Tunable vibration absorbing device |
| CN110714372A (en) * | 2019-11-15 | 2020-01-21 | 中铁二院工程集团有限责任公司 | Dynamic vibration absorption and energy consumption device for delaying development of rail corrugation |
| GB2609732A (en) * | 2020-04-28 | 2023-02-15 | Talent Power Ltd | Rail damper mounting apparatus and rail damper systems containing the same |
| WO2022100553A1 (en) * | 2020-11-10 | 2022-05-19 | Wai Tat Innovation Limited | Railway vibration damping device with mirrored oscillation masses |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3631492A1 (en) * | 1986-09-16 | 1988-03-17 | Schwartz Heinz | Reduction of the structure-borne noise on the rails of a railway track |
| DE3939215A1 (en) * | 1989-11-28 | 1991-05-29 | Schwartz Heinz | Reduction of noise of railway traffic - involves two=part longitudinal element of polyurethane and lead fixed to the sides of the rails |
| DE4207334A1 (en) * | 1992-03-07 | 1993-09-23 | Friedrich Ing Grad Schmid | Profiled rail for use in railway line - consists of normal head and foot joined by web but with recess centrally in underside of foot filled with lead |
| NL9300891A (en) * | 1993-05-25 | 1994-12-16 | Edilon Bv | Rail. |
-
1995
- 1995-09-06 FR FR9510430A patent/FR2738263B1/en not_active Expired - Lifetime
-
1996
- 1996-09-02 DE DE1996609025 patent/DE69609025T2/en not_active Expired - Lifetime
- 1996-09-02 EP EP19960401872 patent/EP0761879B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1985051B (en) * | 2003-07-11 | 2011-08-17 | 潘得路有限责任公司 | Tuned absorbers for rails |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2738263A1 (en) | 1997-03-07 |
| FR2738263B1 (en) | 1997-10-31 |
| EP0761879A1 (en) | 1997-03-12 |
| DE69609025D1 (en) | 2000-08-03 |
| DE69609025T2 (en) | 2001-03-08 |
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