EP0607890B1 - Palier élastique pour bras de suspension en forme de bielles pour boîtes d'essieu de véhicules ferroviaire - Google Patents

Palier élastique pour bras de suspension en forme de bielles pour boîtes d'essieu de véhicules ferroviaire Download PDF

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Publication number
EP0607890B1
EP0607890B1 EP94100548A EP94100548A EP0607890B1 EP 0607890 B1 EP0607890 B1 EP 0607890B1 EP 94100548 A EP94100548 A EP 94100548A EP 94100548 A EP94100548 A EP 94100548A EP 0607890 B1 EP0607890 B1 EP 0607890B1
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EP
European Patent Office
Prior art keywords
bearing
resilient
faces
bodies
portions
Prior art date
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Expired - Lifetime
Application number
EP94100548A
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German (de)
English (en)
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EP0607890A1 (fr
Inventor
Bernd Stöter
Joachim Tank
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.)
Continental AG
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Continental AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
    • B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
    • B61F5/32—Guides, e.g. plates, for axle-boxes

Definitions

  • the invention relates to elastic bearings for the connecting rod-type link for axle bearings of the type shown schematically in FIG. 1 of the accompanying drawing on rail vehicles according to the preamble of patent claim 1.
  • Such bearings are widely used for the resiliently vertically movable support of the axles of rail vehicles with respect to the vehicle frame - in particular with respect to the bogie frame of such vehicles.
  • Said connecting rod-like links are responsible, on the one hand, for the stable running of the vehicle axles in the longitudinal and transverse directions, and, on the other hand, they enable their resilient deflection in the vertical direction.
  • the elastic mounting of the connecting rod bearing axles in the connecting rod bearing eyes must be relatively hard with respect to axial and radial deflections and in particular with regard to cardanic deflections around the center of the bearing, but must be as soft as possible with regard to torsional movements.
  • the elastic bearings previously used on the connecting rod-type links in question were only unsatisfactorily able to meet these requirements.
  • the spring elements that determine the elastic properties of the known connecting rod bearings were namely designed as rubber bodies, which are rotationally symmetrical cylindrical or approximately cylindrical between the bearing axis and bearing eye of the connecting rod and were not sufficiently rigid, particularly with regard to cardanic deflections, and no longer met the constantly increasing requirements.
  • Connecting rod-type handlebars with elastic bearings are also known from GB-A-725.914.
  • the inventive approximately double-cone design and arrangement of the rubber-elastic spring bodies and their centering on the center of the bearing ensures that the cardanic deflections, which are particularly difficult to control in conventional bearings, act in the direction of the surface normals on the conical outer surfaces of the rubber-elastic spring bodies and thereby the surface bond between the spring bodies and load the metal parts connected to them evenly over the entire surface. This avoids local increases in load, which can lead to the destruction of the rubber or the loosening of the rubber / metal bond and thus to the defect of the bearing in continuous operation.
  • the apices of the imaginary conical central surfaces of the two rubber-elastic spring bodies lie on the bearing center line corresponding to the axis of rotational symmetry of the bearing no more than 10% of the axial width of the elastic bearing.
  • the two vertices preferably coincide at the center of the bearing.
  • intermediate plates in the form of conical rings which are parallel to the conical inner and outer surfaces of the spring bodies are preferably adhesively embedded in the spring bodies of the bearings according to the invention.
  • the axial width of these rings decreases from the inside to the outside and, like the axial width of the conical outer and inner surfaces of the metallic connecting parts of the spring body, is dimensioned in such a way that the same force-transmitting elements Adhesive surfaces to the adjacent rubber layers of the spring body result, while the thickness of the rubber layers of the spring body produced in this way, decreasing from the inside to the outside, is chosen in particular so that all rubber layers have the same form factor.
  • the wheel axle bearing 4 receiving the wheel axle 3 is supported by springs 5 on the vehicle or bogie frame indicated by hatching.
  • springs 5 On guide the wheel axle bearing 4 in the longitudinal, transverse and vertical directions serve two connecting rod-like links 1, which are each connected via elastic bearings 2 on the one hand to the wheel axle bearing 4 and on the other hand to the vehicle or bogie frame.
  • each of the connecting rod-like links 1 contains two bearing eyes 7, into each of which an elastic bearing 2 according to the invention is inserted.
  • the respective bearing axis 6 is supported by two bearing bushes 8 which are inserted coaxially into the bearing eye 7 and axially preloaded against one another in this in an axially mirror-inverted orientation.
  • the bearing bushes 8 each consist of an inner part 8.1 and an outer part 8.2 and a spring body 8.3, the outer surface 8.11 of the inner part 8.1 and the inner surface 8.21 of the outer part 8.2 are vulcanized together with the spring body 8.3 formed from a rubber-elastic material.
  • the spring bodies 8.3 are conical, and their imaginary central surfaces F1, F2 lie on conical shells, the vertices S1, S2 of which lie after the axial preloading of the bearing bushes in the immediate area of the bearing center point M and which have the same apex angle ⁇ .
  • Figures 3, 4 and 5 do not require any further explanation except for the fact that in Figure 5 the spring bodies 8.3 are divided by vulcanized intermediate plates in the form of conical rings 8.31, which increases their hardness counteracting the cardanic deflections of the bearing axis 6 becomes.
  • the person skilled in the art has it in hand in the usual way - in particular by selecting rubber mixtures suitable for the spring body 8.3 - to the requirements of to adapt to the respective application.
  • Advantageous developments of the invention may consist in not configuring the conical spring bodies 8.3 to be completely rotationally symmetrical, but in such a way that they have different hardnesses and / or damping in sectors depending on the different static or dynamic forces acting on them in the different radial directions.
  • the spring bodies 8.3 can be constructed in sectors from different rubber mixtures, and / or they have a non-rotationally symmetrical, sectorally different spatial shape - in particular with sector-like recesses.
  • an elastic bearing is created which decisively improves the axle bearings according to FIG. 1 of rail vehicles - especially with regard to the perfect axle guidance. But also with regard to the vertical spring behavior in connection with the vehicle springs 5 and thus with regard to the overall suspension comfort of the vehicles as well as the wear resistance and service life of both the bearing itself and the entire axle bearing, considerable improvements are achieved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Springs (AREA)
  • Support Of The Bearing (AREA)

Claims (8)

  1. Palier élastique pour bras du type bielle de supports d'essieu de véhicules ferroviaires comprenant des éléments élastiques coaxiaux à l'axe (6) du palier, disposés entre l'axe (6) du palier et le manchon de palier (7) du bras (1) et donnant appui à ces derniers l'un par rapport à l'autre, caractérisé
    - en ce qu'il est prévu, comme éléments élastiques, deux coussinets (8) caoutchouc/métal,
    - dont chacun comprend une partie intérieure métallique (8.1) et une partie extérieure métallique (8.2) ainsi qu'un corps élastique (8.3) ayant l'élasticité du caoutchouc, qui remplit la fente annulaire formée entre l'élément intérieur et l'élément extérieur, et qui est assemblé à ces éléments,
    - et en ce que ces coussinets (8) sont emboîtés dans le boîtier de palier (7) dans des orientations axiales inverses l'une de l'autre, coaxialement à l'axe du palier, par les deux côtés,
    - et sont assemblés par une liaison bloquée en rotation, par action de force et/ou par sûreté de forme, d'une part, au manchon de palier (7) par leurs éléments extérieurs (8.2) et, d'autre part, à l'axe de palier (6) par leurs éléments intérieurs, et sont précontraints axialement l'un par rapport à l'autre,
    - les surfaces extérieures (8.11) des éléments intérieurs (8.1) et les surfaces intérieures (8.21) des éléments extérieurs (8.2) des coussinets, de même que les surfaces intérieures et extérieures respectivement des corps élastiques (8.3) ayant l'élasticité du caoutchouc qui sont disposés entre ces éléments , étant de configuration conique, de telle manière que leurs rayons croissent proportionnellement à la distance axiale au centre (M) du palier,
    - et les sommets (S1, S2) des surfaces médianes coniques fictives (F1, F2) des deux corps élastiques (8.3) se trouvant sur l'axe géométrique (A) du palier, dans la région du centre (M) du palier.
  2. Palier élastique selon la revendication 1, caractérisé en ce que l'écartement des sommets (S1, S2) des surfaces médianes coniques fictives (M1, M2) sur l'axe géométrique (A) du palier est au maximum de 10 % de la largeur axiale (B) du palier élastique.
  3. Palier élastique selon la revendication 1, caractérisé en ce que les surfaces médianes coniques fictives (F1, F2) des deux corps élastiques (8.3) forment un cône double dont le sommet se trouve au centre (M) du palier.
  4. Palier élastique selon une des revendications 1 à 3, caractérisé en ce que l'angle au sommet (α) des surfaces médianes coniques fictives (F1, F2) des deux corps élastiques (8.3) possède une valeur de 60 à 90°.
  5. Palier élastique selon la revendication 4, caractérisé en ce que l'angle au sommet (α) possède une valeur de 70 à 80°.
  6. Palier élastique selon une des revendications 1 à 5, caractérisé en ce que des tôles intercalaires ayant la forme de bagues coniques (8.31) dont les surfaces sont parallèles aux surfaces coniques (8.11, 8.21) des éléments intérieurs et extérieurs (8.1, 8.2) sont noyées et fixées par adhérence dans les corps élastiques (8.3), ces bagues subdivisant les corps élastiques (8.3) en plusieurs couches de caoutchouc, la largeur axiale de ces bagues (8.31) et celle des corps élastiques (8.3) décroissant de l'intérieur vers l'extérieur et étant calculée, de même que la largeur axiale des surfaces coniques extérieures et intérieures (8.11, 8.21) qui appartiennent respectivement aux éléments intérieurs et extérieurs (8.1, 8.2), de manière qu'on obtienne des aires identiques pour les surfaces d'adhérence qui assurent la transmission des efforts aux couches de caoutchouc adjacentes du corps élastique (8.3) et l'épaisseur des couches de caoutchouc des corps élastiques (8.3), qui sont ainsi obtenues,étant décroissante de l'intérieur vers l'extérieur, en particulier de manière que toutes les couches de caoutchouc présentent le même coefficient de forme.
  7. Palier élastique selon une des revendications 1 à 6, caractérisé en ce que les corps élastiques (8.3) sont réalisés avec une raideur et/ou un amortissement qui varient par secteurs en fonction de forces statiques ou dynamiques qui agissent sur ces corps élastiques dans la direction radiale.
  8. Palier élastique selon la revendication 7, caractérisé en ce que les corps élastiques (8.3) présentent des évidements en forme de secteurs.
EP94100548A 1993-01-22 1994-01-15 Palier élastique pour bras de suspension en forme de bielles pour boîtes d'essieu de véhicules ferroviaire Expired - Lifetime EP0607890B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4301652A DE4301652C1 (de) 1993-01-22 1993-01-22 Elastisches Lager für pleuelartige Lenker an Achslagerungen von Schienenfahrzeugen
DE4301652 1993-01-22

Publications (2)

Publication Number Publication Date
EP0607890A1 EP0607890A1 (fr) 1994-07-27
EP0607890B1 true EP0607890B1 (fr) 1997-05-14

Family

ID=6478701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100548A Expired - Lifetime EP0607890B1 (fr) 1993-01-22 1994-01-15 Palier élastique pour bras de suspension en forme de bielles pour boîtes d'essieu de véhicules ferroviaire

Country Status (3)

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EP (1) EP0607890B1 (fr)
DE (2) DE4301652C1 (fr)
ES (1) ES2102077T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431379C2 (de) * 1994-08-26 1998-02-12 Deutsche Waggonbau Ag Laufwerk für Schienenfahrzeuge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746640C (de) * 1939-03-09 1944-08-18 Continental Gummi Werke Ag Achsbuchsfuehrung fuer Schienenfahrzeuge mittels Gummifedern
GB725914A (en) * 1953-01-20 1955-03-09 Vickers Electrical Co Ltd Improvements relating to axle box arrangements for railway vehicles
DE2029329B2 (de) * 1970-06-13 1976-05-06 Rheinstahl Ag Transporttechnik, 3500 Kassel Achslagerfuehrung fuer schienenfahrzeuge, insbesondere fuer drehgestell-lokomotiven
IT1248852B (it) * 1990-06-14 1995-01-30 Pirelli Sistemi Antivibranti Snodo elastico

Also Published As

Publication number Publication date
DE4301652C1 (de) 1994-01-27
ES2102077T3 (es) 1997-07-16
DE59402686D1 (de) 1997-06-19
EP0607890A1 (fr) 1994-07-27

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