EP2390157B1 - Appareil pour lubrifier des rails à gorge pour materiel ferroviaire de type tramway - Google Patents

Appareil pour lubrifier des rails à gorge pour materiel ferroviaire de type tramway Download PDF

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Publication number
EP2390157B1
EP2390157B1 EP11164197.3A EP11164197A EP2390157B1 EP 2390157 B1 EP2390157 B1 EP 2390157B1 EP 11164197 A EP11164197 A EP 11164197A EP 2390157 B1 EP2390157 B1 EP 2390157B1
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EP
European Patent Office
Prior art keywords
grease
spraying
rail
dispensing
feed means
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Application number
EP11164197.3A
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German (de)
English (en)
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EP2390157A3 (fr
EP2390157A2 (fr
Inventor
Graziado Mazzi
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.)
Mazzi Tecnology Srl
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Mazzi Tecnology Srl
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K3/00—Wetting or lubricating rails or wheel flanges

Definitions

  • This invention relates to a lubricator device for grooved railway and tram rails, that is to say, rails in which the in wheel of the train runs inside an upper longitudinal channel (the cross-section of a typical grooved rail is visible in Figures 3 and 4 ). Such rails are usually used for tram lines.
  • this invention relates to a device able to apply grease in the groove.
  • a problem particularly felt in the railway sector is that of wear on the rails following the passage of vehicles on them (whether they are trains, trams or other vehicles). That problem manifests itself in particular at curved stretches where the lateral thrust of the wheel on the rail is particularly high and, therefore, where friction between the two is at its maximum.
  • the first automatic lubricating devices were devices able to apply lubricating oil. In most cases they were mounted close to the rail, at a distance allowing the train wheel to pass, and applied the oil by spraying it onto the rail.
  • the main disadvantage of that type of device is that it cannot guarantee an adequate lubricating effect because the oil, having a low viscosity, tends to run down the side of the rail and is wasted.
  • each wall of the groove is lubricated by a device which feeds grease to through holes made through the rail and which lead to each wall of the groove. Said through holes are made both through the head of the raid and through the check rail.
  • the installation of such a device is not without disadvantages both because it requires the ability to access both sides of the rail, and because it always requires drilling of holes in the head and the web of the rail, something which, in some cases, may have a negative impact on the mechanical performance of the rail.
  • the technical purpose which forms the basis of this invention is to provide a lubricator device for grooved railway and tram rails which overcomes the above-mentioned disadvantages.
  • the technical purpose of this invention is to provide a lubricator device for grooved railway and tram rails which allows the application of grease on both sides of the groove.
  • the numeral 1 denotes in its entirety a lubricator device for grooved railway and tram rails 2 in accordance with this invention.
  • Figure 1 the device 1 is deliberately illustrated schematically with the various parts arranged in such a way as to allow an improved understanding of the drawing.
  • that layout, as well as the size of the various parts relative to each other does not correspond to the actual layout, as will also become more apparent from the description which follows.
  • Figure 2 shows how in practice some of the various parts of the device 1 made according to the preferred method may be arranged relative to each other as well as relative to the grooved rail 2.
  • grooved rails 2 that is to say, a rail 2 in which (with reference to its cross-section) the flange 3 and the web 4 are similar to those of a conventional rail 2 and in which the upper head 5 has one side (on the right in the accompanying drawings) similar to that of conventional rails 2, and the other modified and coupled with an outer wing 6 which is curved upwards in such a way as to form with it the groove 7 in which the wheel will run.
  • the groove 7 has a substantially symmetrical cross-section and is delimited by two substantially flat portions of the surface of the rail 2, which converge slightly downwards.
  • the lubricator device 1 comprises first, means 8 for dispensing grease and means 9 for spraying grease, both of which can be connected to respective through holes 10 made through a part of the rail 2 which delimits the groove 7 and which extend from the outside of the rail 2 and lead into the groove 7, as illustrated in Figures 3 and 4 .
  • the dispensing means 8 (visible in Figure 4 ) are designed to dispense, during operation, the grease on a part of the surface of the groove 7 of the rail 2 which is close to the through hole 10 and generally mainly positioned just below the through hole 10, where the grease clings thanks to its adhesive properties.
  • the spraying means 9 are designed to spray, during operation, the grease onto the surface of the groove 7 of the rail 2 opposite the through hole 10.
  • the dispensing means 8 are designed to make the grease come out in a fluid fashion without sudden variations in the thrust pressure (so that, in a certain sense, the grease is poured into the groove 7), whilst the spraying means 9 are designed to make the grease come out after a sudden increase in its upstream pressure.
  • the grease applied in the groove is represented by the two irregular black shapes 11.
  • all of the through holes 10 are illustrated as being made in the part of the rail 2 formed by the curved wing 6, that is to say, in the check rail. However, in other embodiments, all or only some of the holes may even be made through the head 5 of the rail 2.
  • the embodiment illustrated there are seven through holes 10.
  • the seven through holes 10 illustrated three are used by the dispensing means 8, four by the spraying means 9. Those use by the dispensing means 8 are alternated with the others.
  • the dispensing means 8 and the spraying means 9 comprise respectively at least one pipe 12 for the grease having a first end 13 directly or indirectly connected to first grease feed means 14, and a second end 15 connectable to the respective through hole 10 during operation.
  • the expression connected/connectable to the through holes 10 refers both to the case in which each pipe 12, as in Figures 3 and 4 , is connected to the through hole 10 in such a way that the hole is a continuation of the pipe, and the case in which the pipe 12 is simply inserted in the through hole 10 so that it gives onto the groove 7 directly.
  • the first feed means 14 feed grease both to the dispensing means 8 and to the spraying means 9, and advantageously may comprise at least one tank 16 for the grease, a pump 17 for moving the grease which has a suction connection to the tank 16 and, if necessary, a first on-off solenoid valve 18 on the pump 17 delivery side. Feeding of the grease to the dispensing means 8 and to the spraying means 9 may be controlled by opening and closing the first on-off solenoid valve 18 and by controlling activation of the pump 17 for example (in a way which is known in grease lubrication plants) by means of a pressure switch mounted on the pump 17 delivery side upstream or downstream of the solenoid valve.
  • the first feed means 14 also comprise at least one element 19 for distributing the grease amongst the various pipes, whose operation may be active or passive.
  • a progressive distributor that is to say, a piston-operated doser with one or more outlets able to guarantee the dispensing of the same quantity of grease with each cycle in each outlet, whilst in the latter case a simple manifold may be used.
  • the device 1 also comprises second feed means 20 for feeding a pressurised thrust fluid to the spraying means 9, to cause activation of the spraying means and the consequent spraying of grease from the through holes 10 towards the groove 7.
  • the pressurised fluid is air and the second feed means 20 comprise at least one compressor 21 and at least a second on-off solenoid valve 22 (preferably one for each through hole 10 to which the spraying means 9 are connected).
  • the compressor 21 may also be used for feeding pressurised fluid to the pump 17 of the first feed means 14 if it is a pneumatic feed pump 17.
  • the second feed means 20 feed the pressurised fluid to at least one grease spraying device 23, which is part of the spraying means 9 and is connected between the first feed means 14 and the first end 13 of the respective pipe 12.
  • the spraying device 23 on one side has an inlet 24 and an outlet 25 for the grease, and on the other side it has at least one entry opening 26 for the pressurised thrust fluid.
  • the interaction between the air and the grease may be either direct or by means of a mobile element such as a piston or a membrane/diaphragm.
  • a mobile element such as a piston or a membrane/diaphragm.
  • spraying devices 23 which are controlled (which allow spraying only after a command has been received), or, preferably, passive, allowing spraying as soon as the pressurised fluid arrives.
  • the progressive distributor which feeds the grease to the spraying device 23.
  • Figure 4 shows a pipe 12 directly connected to the progressive distributor, and which is part of the dispensing means 8.
  • control unit 27 which is operatively connected at least to the first feed means 14 and to the second feed means 20.
  • the control unit may be a simple PLC or even more complex electronic devices.
  • the control unit 27 is programmed to carry out, during operation, a set of functions which guarantee correct operation of the device 1.
  • First in general it is programmed to activate the first feed means 14 both for feeding grease to the dispensing means 8 and to the spraying means 9 until the through holes 10 are full, and for causing the grease to be dispensed through the dispensing means 8.
  • control unit 27 is also programmed in such a way that it activates the second feed means 20, for causing the grease to be sprayed by the spraying means once the grease has been fed to the spraying means 9.
  • control unit 27 is programmed first to operate the first feed means 14 until all of the through holes 10 are full of grease. Then it activates the second feed means 20, for causing the grease to be sprayed by the spraying means 9. Once the spraying has ended, it reactivates the first feed means 14 so that at the same time the grease previously sprayed by the spraying means 9 is replaced and a new dose of grease is dispensed by the dispensing means 8.
  • the spraying means 9 may also form the dispensing means 8.
  • the same means may be used both as the spraying means 9 and as the dispensing means 8.
  • the grease comes out by using the spraying device 23, whilst in the latter case it comes out thanks to the action of the first feed means 14.
  • programming of the control unit 27 also varies. Once the grease has been sprayed by the spraying means 9, the control unit inhibits operation of the second feed means 20, whilst it activates only the first feed means 14 for longer, so that, first, the grease just sprayed is replaced, and then it causes the dispensing of a predetermined quantity of grease by the spraying means 9 which act as the dispensing means 8.
  • control unit 27 may be programmed to repeat the various dispending and spraying steps if different circumstances arise. In the simplest embodiment, it may be programmed to repeat the various steps after a predetermined time interval. In contrast, in the preferred embodiment, it may be programmed to repeat the various steps before and/or after and/or during the transit of a vehicle on the rail 2.
  • the various steps may be repeated several times so as to take advantage of the passage of the various wheels to distribute a greater quantity of grease along a longer stretch of rail 2.
  • the device 1 comprises a suitable detector sensor 28 connected to the control unit 27, which can therefore be programmed to activate grease dispensing and spraying depending on the sensor reading (in any case, if necessary there may be an additional timed dispensing action).
  • the sensor may be a sensor 28 for detecting the vibrations induced by the vehicle on the rail 2, an electromagnetic sensor, an optical sensor or another type.
  • the device 1 With regard to device 1 installation, in the preferred embodiments this is carried out by dividing the device 1 into two operating units, a first operating unit which, during operation, can be positioned close to a railway line but at a predetermined distance from the rail 2, and a second operating unit which, during operation, can be mounted at the side of the rail 2 to be greased.
  • the first operating unit comprises at least part of the first feed means and the second feed means 20, and more particularly the tank 16, the pump 17 and the compressor 21, as well as the control unit 27, whilst the second operating unit comprises all of the other elements, and in particular at least the dispensing means 8 and the spraying means.
  • the second operating unit may be inserted at least partly in the empty space along the web 4 of the rail 2 above the flange 3 and it may be covered by a specific covering guard 29 (just as the first operating unit may comprise its own containment box, not illustrated).
  • a specific covering guard 29 even as the first operating unit may comprise its own containment box, not illustrated.
  • this invention also relates to a railway line with grooved rails 2, in which at least one of the grooved rails 2 is equipped with one or more through holes 10 made through a part of the rail 2 delimiting the groove 7 and leading into the groove 7, and is equipped with at least one lubricator device 1 of the type described above whose dispensing means 8 and spraying means are connected to said one or more through holes 10.
  • This invention brings important advantages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soft Magnetic Materials (AREA)
  • Coating Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (12)

  1. Une ligne de chemin de fer avec des rails à gorge (2) dans laquelle au moins un des rails à gorge (2) est doté d'un ou de plusieurs trous débouchants (10) qui sont réalisés à travers une partie dudit rail (2) délimitant la gorge (7) et qui débouchent dans ladite gorge (7), la ligne comprenant au moins un dispositif de lubrification (1) comprenant à son tour :
    des moyens de distribution de graisse (8) qui sont reliés à au moins un trou débouchant (10), lesdits moyens de distribution (8) étant destinés à distribuer, en fonctionnement, la graisse sur une surface de la gorge (7) du rail (2) qui est proche du trou débouchant (10) ; et
    des premiers moyens d'alimentation (14) pour alimenter de la graisse aux moyens de distribution (8) ; caractérisée en ce que le dispositif de lubrification (1) comprend aussi :
    des moyens de pulvérisation de graisse (9) reliés à au moins un trou débouchant (10), lesdits moyens de pulvérisation (9) étant destinés à pulvériser, en fonctionnement, la graisse sur une surface de la gorge (7) du rail (2) qui est opposée au trou débouchant (10) ; les premiers moyens d'alimentation (14) alimentant également la graisse aux moyens de pulvérisation (9) ;
    des deuxièmes moyens d'alimentation (20) pour alimenter un fluide de poussée sous pression aux moyens de pulvérisation (9) pour les activer ; et
    au moins une unité de commande (27) opérationnellement reliée au moins aux premiers moyens d'alimentation (14) et aux deuxièmes moyens d'alimentation (20), et programmée pour, en fonctionnement :
    activer les premiers moyens d'alimentation (14) pour alimenter de la graisse aux moyens de distribution (8) et aux moyens de pulvérisation (9) et pour que la graisse soit distribuée à travers les moyens de distribution (8) ; et
    une fois que la graisse a été alimentée aux moyens de pulvérisation (9), activer les deuxièmes moyens d'alimentation (20) pour que la graisse soit pulvérisée par les moyens de pulvérisation (9).
  2. La ligne selon la revendication 1, caractérisée en ce que les moyens de distribution (8) et les moyens de pulvérisation (9) comprennent respectivement au moins un conduit (12) pour la graisse comprenant une première extrémité (13) qui est directement ou indirectement reliée aux premiers moyens d'alimentation (14), et une deuxième extrémité (15) reliée au trou débouchant (10).
  3. La ligne selon la revendication 2, caractérisée en ce que les moyens de pulvérisation (9) comprennent au moins un dispositif de pulvérisation de graisse (23) relié entre les premiers moyens d'alimentation (14) et la première extrémité (13) dudit au moins un conduit (12) respectif, et comprenant aussi au moins une ouverture d'entrée (26) pour le fluide de poussée sous pression.
  4. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce que les premiers moyens d'alimentation (14) comprennent au moins un réservoir (16) pour la graisse, une pompe (17) pour le transport de la graisse et si nécessaire une première électrovanne marche-arrêt (18).
  5. La ligne selon les revendications 2 et 4, caractérisée en ce que les premiers moyens d'alimentation (14) comprennent aussi au moins un élément (19) pour la distribution de la graisse entre les différents conduits, le fonctionnement dudit élément étant actif ou passif.
  6. La ligne selon la revendication 5, caractérisée en ce que l'élément de distribution (19) est un distributeur progressif.
  7. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce que les deuxièmes moyens d'alimentation (20) comprennent au moins un compresseur (21) et au moins une deuxième électrovanne marche-arrêt (22).
  8. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend aussi un capteur (28) pour détecter le passage d'un véhicule sur le rail (2), le capteur étant relié à l'unité de commande (27), et étant aussi caractérisée en ce que l'unité de commande (27) est programmée pour activer la distribution et la pulvérisation de la graisse au moins en fonction de ce que le capteur détecte.
  9. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce que l'unité de commande (27) est programmée pour activer la distribution et la pulvérisation de la graisse de façon temporisée selon des intervalles prédéfinis qui, le cas échéant, peuvent être programmables.
  10. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce que les moyens de pulvérisation (9) forment aussi les moyens de distribution (8), et étant aussi caractérisée en ce que l'unité de commande (27) est programmée pour activer uniquement les premiers moyens d'alimentation (14) pour que les moyens de pulvérisation (9) fonctionnent comme les moyens de distribution (8), et pour activer aussi les deuxièmes moyens d'alimentation (20) pour que les moyens de pulvérisation (9) fonctionnent comme moyens de pulvérisation proprement dits.
  11. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend deux unités opérationnelles, une première unité opérationnelle comprenant au moins une partie des premiers moyens d'alimentation et des deuxièmes moyens d'alimentation (20) et l'unité de commande (27), et qui, en fonctionnement, est placée à proximité d'une ligne de chemin de fer, et une deuxième unité opérationnelle comprenant au moins les moyens de distribution (8) et les moyens de pulvérisation qui est montée sur le côté du rail (2) à graisser.
  12. La ligne selon l'une quelconque des revendications précédentes, caractérisée en ce que les trous débouchants (10) sont réalisés uniquement dans le contre-rail.
EP11164197.3A 2010-05-28 2011-04-28 Appareil pour lubrifier des rails à gorge pour materiel ferroviaire de type tramway Active EP2390157B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITVR2010A000112A IT1400633B1 (it) 2010-05-28 2010-05-28 Dispositivo ingrassatore per rotaie ferro-tramviarie a gola

Publications (3)

Publication Number Publication Date
EP2390157A2 EP2390157A2 (fr) 2011-11-30
EP2390157A3 EP2390157A3 (fr) 2012-01-25
EP2390157B1 true EP2390157B1 (fr) 2015-06-03

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EP11164197.3A Active EP2390157B1 (fr) 2010-05-28 2011-04-28 Appareil pour lubrifier des rails à gorge pour materiel ferroviaire de type tramway

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EP (1) EP2390157B1 (fr)
IT (1) IT1400633B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2665098C1 (ru) * 2017-08-21 2018-08-28 Кирилл Николаевич Войнов Рельсо-гребнесмазывающее устройство

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2498385B (en) * 2012-01-13 2018-08-29 Rowe Hankins Ltd Apparatus and method for applying lubricant to railway vehicle wheels
CN109987115A (zh) * 2018-12-29 2019-07-09 宁波宝鑫铁路信号设备制造有限公司 一种槽型轨导油板、涂油器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2173654A (en) * 1936-01-11 1939-09-19 Chester F Gailor Track lubricating apparatus
DE1455331A1 (de) * 1964-10-24 1969-05-08 Limon Fluhme & Co De Schmiereinrichtung fuer Kurven von Eisenbahnschienen
IT1289070B1 (it) 1996-01-31 1998-09-25 Graziadio Mazzi Dispositivo per spruzzare grasso lubrificante sulla parete laterale di rotaie ferroviarie
NL1027894C2 (nl) * 2004-12-27 2006-06-28 Rail Partner Schweiz Ag Spoorstaafsmeersysteem.
US7735607B2 (en) * 2005-01-24 2010-06-15 Tranergy Corporation Gage side or field side top-of-rail plus gage corner lubrication system
ATE439288T1 (de) 2006-03-28 2009-08-15 Mazzi Tecnology S R L Schmiervorrichtung für eisenbahnschienen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2665098C1 (ru) * 2017-08-21 2018-08-28 Кирилл Николаевич Войнов Рельсо-гребнесмазывающее устройство

Also Published As

Publication number Publication date
EP2390157A3 (fr) 2012-01-25
ITVR20100112A1 (it) 2011-11-29
EP2390157A2 (fr) 2011-11-30
IT1400633B1 (it) 2013-06-14

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