EP1354778B1 - Procédé d'application des disques de tampon fabriqués de plastique sur les têtes des tampons des véhicules ferroviaires et dispositif pour metttre en oeuvre ce tel procédé et tampon fabriqué par ce tel procédé - Google Patents

Procédé d'application des disques de tampon fabriqués de plastique sur les têtes des tampons des véhicules ferroviaires et dispositif pour metttre en oeuvre ce tel procédé et tampon fabriqué par ce tel procédé Download PDF

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Publication number
EP1354778B1
EP1354778B1 EP03405166A EP03405166A EP1354778B1 EP 1354778 B1 EP1354778 B1 EP 1354778B1 EP 03405166 A EP03405166 A EP 03405166A EP 03405166 A EP03405166 A EP 03405166A EP 1354778 B1 EP1354778 B1 EP 1354778B1
Authority
EP
European Patent Office
Prior art keywords
buffer
buffer plate
recess
sleeve
panel
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
Application number
EP03405166A
Other languages
German (de)
English (en)
Other versions
EP1354778A1 (fr
Inventor
Peter Kofmel
Otto Ziegler
Peter Schönenberger
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.)
Schwab Verkehrstechnik AG
Original Assignee
Schwab Verkehrstechnik AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schwab Verkehrstechnik AG filed Critical Schwab Verkehrstechnik AG
Publication of EP1354778A1 publication Critical patent/EP1354778A1/fr
Application granted granted Critical
Publication of EP1354778B1 publication Critical patent/EP1354778B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G11/00—Buffers
    • B61G11/18—Details

Definitions

  • the invention relates to a method for attaching plastic buffer plates to buffer plates provided with buffer plates of rail vehicles according to the preamble of claim 1, a method for renovating worn buffers of rail vehicles the preamble of claim 5, an apparatus for performing the method according to the claim 8 and a buffer prepared by the method according to claim 10.
  • a buffer for rail vehicles in which the buffer plate is provided with a layer of thermosetting, fiber-reinforced plastic. This layer is either connected by gluing to the buffer plate, or it is provided with metal discs, which serve as an abutment for bolts.
  • a buffer with an impact surface formed by a plastic buffer plate known.
  • the buffer plate is provided along the edge with a plurality of mounting holes, in which screws are inserted, by means of which the buffer plate is attached to the buffer head.
  • a buffer for railway vehicles in which the center of the buffer plate is provided with a plastic insert.
  • the fixing of the plastic insert can be done in two ways: In one case, the plastic insert is inserted from behind into a forward tapered against the abutment recess in the buffer plate and the buffer plate then secured by rivets on the shaft of the buffer.
  • the plastic insert is provided with a central bore and a continuous slot. On the back of this hole is also a groove at right angles to the slot in the plastic insert embedded.
  • For mounting of the plastic insert is provided with a T-shaped head pull rod of a fastening tool passed this hole and then rotated by 90 °, so that the T-shaped head engages in the groove.
  • the plastic insert is deformed by the pull rod concave so far that it can be inserted into the recess in the buffer plate. Subsequently, the pull rod is removed by turning them again by 90 ° and the T-shaped head can be pulled over the groove to the outside.
  • a fundamental disadvantage is that the plastic insert must be provided with a central bore and a continuous slot. This is particularly disadvantageous, since the bore and the slot are in the central region, in which the greatest wear occurs and dirt can begin.
  • the object of the invention is to improve the method defined in the preamble of claim 1 such that the existing plastic buffer plate can be easily and quickly fixed to the buffer head, without the buffer plate must be perforated.
  • a further object of the invention is to propose a method for the renovation of worn buffer plates according to the preamble of claim 5, which is easy to carry out, wherein a reduction of the frictional forces occurring at the buffer plate is to be aimed at the renovated buffer, by a significant reduction of the on the buffer acting transverse and vertical forces is achieved.
  • This object is achieved by the method steps indicated in the characterizing part of claim 5.
  • Another object of the invention is to propose an apparatus for carrying out the method according to claim 1 or 5.
  • a device is proposed which has the features defined in the characterizing part of claim 8.
  • a further object of the invention is to propose a buffer for rail vehicles, the buffer plate was provided according to one of the circumscribed in the claims 1 to 7 method with a plastic buffer plate.
  • a buffer has the features cited in the characterizing part of claim 10.
  • FIG. 1 showing a longitudinal section through the apparatus for attaching the buffer plate in the initial state, the basic structure of the device is explained in detail.
  • the device consists of a first outer sleeve 1, a further inner sleeve 2 and a pressure-stamp 3.
  • the two sleeves 1, 2 are coaxially arranged one inside the other and displaceable relative to each other.
  • the on the buffer plate 8 of a buffer 13 ( Fig. 8 ) to be attached buffer plate 4 rests on the top of the inner sleeve 2.
  • the buffer plate 4 is round and made of plastic, preferably polyamide.
  • the inner sleeve 2 is provided on the upper side with a bevelled and rounded support surface 5, which is adapted to the coming to rest on the front side 4a of the buffer plate 4, as shown in particular in the enlarged view Fig. 1a is apparent.
  • the inner diameter of the outer sleeve 1 is slightly larger than the outer diameter of the inner sleeve 2, so that the outer sleeve 1 can be displaced in the axial direction relative to the inner sleeve 2.
  • the outer sleeve 1 has an annular circumferential, inner shoulder 6, which has only a small height and a small width of about 0.5-1 mm.
  • the outer sleeve 1 has a serving as a support surface 7 end face, as will be explained in more detail below.
  • the resting on the back of the buffer plate 4 punch 3 is cylindrical and can be moved in the vertical direction.
  • Fig. 2 shows the device according to Fig. 1 in a first phase in the elastic deformation of the buffer plate 4.
  • the punch 3 was pressed in the center of the buffer plate 4 down, so that the buffer plate 4 bends downwards.
  • the punch 3 is moved downwards until the outer diameter d1 of the buffer plate 4 is smaller than or equal to the inner diameter of the outer sleeve 1.
  • the outer sleeve 1 is raised, as can be seen from the Fig. 3 is apparent.
  • the punch 3 is moved upward, so that the buffer plate 4 relieved, wherein the buffer plate 4 now rests with its outer edge on the inside of the outer sleeve 1 and remains in the deformed state.
  • the outer sleeve 1 with the buffer plate 4 and the inner sleeve 2 by 180 ° in the in the Fig. 4 rotated position shown.
  • the two sleeves 1, 2 are now placed together with the buffer plate 4 on a provided with a recess 9 buffer plate 8 ( Fig. 5 ).
  • the annular shoulder 6 of the outer sleeve 1 serves as a centering, by this on upper edge of the recess 9 in the buffer plate 8 applies, as shown in the enlarged illustration Fig. 5a evident.
  • the edge region 10 of the buffer plate 4 has a shape corresponding to the recess 9 in the buffer plate 8.
  • a cylindrical stop surface 11 is provided, whose height is adapted to the height of the annular shoulder 6 of the outer sleeve 1 and therefore also only about 0.5-1mm.
  • the buffer plate 4 As soon as the buffer plate 4 has been moved beyond the lower edge of the outer sleeve 1, it relaxes in the recess 9 and thereby returns to its original shape ( Fig. 6 ). Due to the dovetail-shaped configuration of the recess, the buffer plate 4 is centered in the recess and pulls itself into it, so that it is ultimately received positively in it. Thereafter, the two sleeves 1, 2 can be removed again from the buffer plate 8, as shown in the Fig. 7 is shown.
  • Fig. 8 shows a perspective view of a buffer 13 with inserted into the buffer plate 8 buffer plate 4.
  • a round buffer plate 4 is used, which is received in a corresponding recess 9 in the buffer plate 8.
  • Fig. 9 shows a buffer 13a with an alternative embodiment of a buffer plate 4a.
  • the buffer plate 8a is provided with a recess 9a, whose diameter is greater than the height of the buffer plate 8a.
  • the inserted into the recess 9a buffer plate 4a is flattened on the top and bottom 15, 16.
  • elements 17 can be mounted on the top and bottom of the buffer plate 8 a.
  • the buffer plate 4 a can also be provided with bores 18 into which, for example, tensioning pins or screws are inserted or screwed.
  • the described method is suitable both for attaching plastic buffer plates to new buffer plates, as well as for renovating existing buffers of rail vehicles.
  • the buffer plate is clamped on a lathe and produces the preferably dovetail-shaped recess by unscrewing the buffer plate.
  • a wood screw (not shown) are screwed into the buffer plate 4, 4a, which lifts the buffer plate 4, 4a from the bottom of the recess 9, 9a and pushes out of this.
  • buffer plates could be used, which are provided with a domed or domed bottom, in which case the bottom of the recess to the Form would have to be adjusted.
  • the proposed buffers which are provided with a buffer plate made of plastic to form the buffer surface, a reduction of the frictional forces on the buffer plate of cooperating buffers can be effected.
  • a significant reduction in the transverse and vertical forces on the entire tensile and impact device can be achieved.
  • lower lateral thrust forces occur on the wheelsets of the rail vehicles when they are reloaded, which on the one hand increases the risk of derailment and, on the other hand, counteracts a bearing warm-up effect. It is even then causes a reduction in the frictional forces on the buffer plates of cooperating buffers, if only one buffer of a buffer pairing is provided with a buffer plate made of plastic. In this sense, not only the buffer is being renovated with the described refurbishment of worn steel buffer plates, but a refurbished buffer provided with a plastic plate also has significant advantages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Memory System Of A Hierarchy Structure (AREA)
  • Connection Of Plates (AREA)

Claims (13)

  1. Procédé d'application de disques de tampon (4) en plastique sur les têtes (8) des tampons des véhicules ferroviaires, la tête de tampon (8) étant pourvue d'un évidement (9) pour recevoir le disque de tampon (4) et le disque de tampon (4) étant déformé élastiquement jusqu'à ce qu'il puisse être inséré dans l'évidement (9) afin de s'y fixer ensuite par correspondance de formes en utilisant son élasticité de matériau lors de la détente, caractérisé en ce que le disque de tampon (4) est déformé élastiquement par une charge de pression puis est fixé le long de sa périphérie dans la position déformée au moyen d'une première douille (1), en ce que la première douille (1) est ensuite placée et alignée sur l'évidement (9) de la tête de tampon (8), et en ce que le disque de tampon (4) est ensuite enfoncé dans l'évidement (9).
  2. Procédé selon la revendication 1, caractérisé en ce que le disque de tampon (4) est déformé élastiquement par une force agissant essentiellement au centre et est enfoncé dans l'évidement (9) de la tête de tampon (8) par une force agissant essentiellement le long de sa périphérie.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le disque de tampon (4) est posé sur une autre douille (2) et est déformé élastiquement au moyen d'un poinçon (3) agissant au centre jusqu'à ce que son diamètre externe (d1) soit inférieur au diamètre interne de la première douille (1), en ce que la première douille (1) est ensuite poussée sur le disque de tampon (4), son diamètre interne étant légèrement supérieur au diamètre externe de l'autre douille (2), en ce qu'ensuite, le disque de tampon (4) est déchargé, de sorte que celui-ci repose en serrage sur le côté intérieur de la première douille (1) et en ce que la première douille (1) est ensuite placée sur l'évidement (9) de la tête de tampon (8) et le disque de tampon (4) est enfoncé dans l'évidement (9).
  4. Procédé selon la revendication 3, caractérisé en ce que le disque de tampon (4) est enfoncé dans l'évidement (9) de la tête de tampon (8) au moyen de l'autre douille (2).
  5. Procédé de rénovation de têtes de tampon en métal de véhicules ferroviaires, caractérisé en ce que la tête de tampon (8) est pourvue d'un évidement (9) circulaire pour la réception par correspondance de formes d'un disque de tampon (4) en plastique, en ce que le disque de tampon (4) est déformé élastiquement pour l'insertion dans l'évidement (9) par une charge de pression jusqu'à ce que son diamètre externe (d1) soit inférieur au diamètre de l'évidement (9), le disque de tampon (4) déformé élastiquement de la sorte étant fixé le long de son bord extérieur au moyen d'une première douille (1) et la première douille (1) étant ensuite placée et alignée sur l'évidement (9) de la tête de tampon (8) et le disque de tampon (4) étant ensuite enfoncé dans l'évidement (9).
  6. Procédé selon la revendication 5, caractérisé en ce que la tête de tampon (8) est montée sur un tour et l'évidement (9) est généré par évidage au tour de la tête de tampon (8).
  7. Procédé selon la revendication 4 ou 5, caractérisé en ce que la tête de tampon (8) est pourvue d'un évidement (9) rond qui s'étend coniquement vers le fond.
  8. Dispositif de réalisation du procédé selon la revendication 1 ou 5, caractérisé en ce que le dispositif présente une première douille (1) externe et une autre douille (2) interne, lesdites deux douilles (1,2) sont disposées coaxialement et peuvent être déplacées l'une par rapport à l'autre, le diamètre externe de la douille interne (2) étant inférieur au diamètre externe du disque de tampon (4) à l'état déchargé et la douille interne (2) étant pourvue d'une surface d'appui (5) pour l'appui du disque de tampon (4) pendant la déformation élastique de celui-ci et le diamètre interne de la douille externe (1) étant seulement un petit peu plus grand que le diamètre externe de la douille interne (2).
  9. Dispositif selon la revendication 8, caractérisé en ce que la douille externe (1) est pourvue sur le côté avant d'un décrochement (6) annulaire ou de plusieurs décrochements en forme de segment d'anneau, dont la/les dimension(s) est/sont adaptée(s) à la dimension de l'évidement (9) dans la tête de tampon (8), et en ce que la douille externe (1) peut être alignée par le décrochement (6) ou les décrochements dans l'évidement (9) de la tête de tampon (8).
  10. Tampon (13) pour véhicules ferroviaires, doté d'une tête de tampon (8) qui a été pourvue selon l'un des procédés décrits dans les revendications 1 à 7 d'un disque de tampon (4) en plastique, caractérisé en ce que le disque de tampon (4) n'est pas perforé au moins dans sa zone centrale.
  11. Tampon (13) selon la revendication 10, caractérisé en ce que le disque de tampon (4) est réalisé de manière ronde.
  12. Tampon selon la revendication 10, caractérisé en ce que le disque de tampon (4a) est réalisé aplati sur le côté supérieur et/ou inférieur (15, 16), le/les côté(s) longitudinal/aux (15, 16) aplati(s) s'étendant jusque sur le côté supérieur et inférieur de la tête de tampon (8a), et des moyens (17, 18) étant prévus, lesquels fixent le disque de tampon (4a) sans possibilité de rotation sur la tête de tampon (8a).
  13. Tampon (13) selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le disque de tampon (4) est fixé par correspondance de formes dans l'évidement (9) dans la tête de tampon (8).
EP03405166A 2002-04-17 2003-03-11 Procédé d'application des disques de tampon fabriqués de plastique sur les têtes des tampons des véhicules ferroviaires et dispositif pour metttre en oeuvre ce tel procédé et tampon fabriqué par ce tel procédé Expired - Lifetime EP1354778B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6432002 2002-04-17
CH20020643 2002-04-17

Publications (2)

Publication Number Publication Date
EP1354778A1 EP1354778A1 (fr) 2003-10-22
EP1354778B1 true EP1354778B1 (fr) 2008-04-09

Family

ID=4525582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405166A Expired - Lifetime EP1354778B1 (fr) 2002-04-17 2003-03-11 Procédé d'application des disques de tampon fabriqués de plastique sur les têtes des tampons des véhicules ferroviaires et dispositif pour metttre en oeuvre ce tel procédé et tampon fabriqué par ce tel procédé

Country Status (5)

Country Link
EP (1) EP1354778B1 (fr)
AT (1) ATE391653T1 (fr)
DE (1) DE50309564D1 (fr)
ES (1) ES2303886T3 (fr)
NO (1) NO20031764L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH701575B1 (de) 2005-12-22 2011-02-15 Schwab Verkehrstechnik Ag Pufferkopf für Schienenfahrzeuge sowie Verfahren zur Herstellung des Pufferkopfs.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB809137A (en) * 1956-07-21 1959-02-18 John Henry Onions Improvements in or relating to plastic inserts for railway buffer heads

Also Published As

Publication number Publication date
ES2303886T3 (es) 2008-09-01
ATE391653T1 (de) 2008-04-15
DE50309564D1 (de) 2008-05-21
NO20031764D0 (no) 2003-04-15
NO20031764L (no) 2003-10-20
EP1354778A1 (fr) 2003-10-22

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