EP1800987B1 - Attelage à tampon central pour véhicules ferroviaires - Google Patents

Attelage à tampon central pour véhicules ferroviaires Download PDF

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Publication number
EP1800987B1
EP1800987B1 EP06405446A EP06405446A EP1800987B1 EP 1800987 B1 EP1800987 B1 EP 1800987B1 EP 06405446 A EP06405446 A EP 06405446A EP 06405446 A EP06405446 A EP 06405446A EP 1800987 B1 EP1800987 B1 EP 1800987B1
Authority
EP
European Patent Office
Prior art keywords
sealing
sealing body
coupling
closure member
line
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.)
Active
Application number
EP06405446A
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German (de)
English (en)
Other versions
EP1800987A1 (fr
Inventor
Markus Jahns
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
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Publication of EP1800987A1 publication Critical patent/EP1800987A1/fr
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Publication of EP1800987B1 publication Critical patent/EP1800987B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G5/00—Couplings for special purposes not otherwise provided for
    • B61G5/06—Couplings for special purposes not otherwise provided for for, or combined with, couplings or connectors for fluid conduits or electric cables
    • B61G5/08—Couplings for special purposes not otherwise provided for for, or combined with, couplings or connectors for fluid conduits or electric cables for fluid conduits

Definitions

  • the invention relates to a central buffer coupling for rail vehicles according to the preamble of claim 1.
  • Such a clutch is out of the EP 1 300 315 known.
  • the invention aims to develop a central buffer coupling for rail vehicles such that the coupling head is compact, in particular the closure member should be compact and lightweight together with the associated sealing body and the closure member and / or the sealing body should be easy to operate and work reliably have to.
  • a central buffer coupling according to claim 1 is provided according to the invention.
  • the sealing element is formed in a preferred embodiment as an annular circumferential sealing lip which is elastically resilient at least in the radial direction and designed such that it applies by the pressure prevailing in the line form-fitting manner on the closure part of the closure member.
  • This design increases the reliability of the assembly by utilizing the pressure prevailing in the conduit to reliably seal the conduit.
  • the Fig. 1 shows a perspective view of the coupling head 1 of a central buffer coupling. Since the basic structure and the basic mode of action of such a central buffer coupling are known, in particular only some of the elements of the central buffer coupling which are essential in connection with the invention are discussed below.
  • the coupling head 1 shown in the uncoupled state is provided with a coupling plate 2, the plane front side of which forms the actual coupling or impact surface 3.
  • the coupling plate 2 is provided with a round centering opening 4 and a dome 5 which is intended to engage in the centering opening of the counter-coupling (not shown).
  • From the underside of the coupling plate 2 is an angled Leitarm 6, which serves in the coupling process precentering the two coupling heads to be joined together.
  • the coupling head 1 is further provided with a pneumatic brake line 8 and a pneumatic supply line 9, which are each provided with a coupling or sealing body 10, 11 projecting in the uncoupled state via the coupling surface 3 of the coupling plate 2.
  • the respective sealing body 10, 11 is displaceable in the axial direction.
  • the Fig. 2 shows the coupling head 1 in longitudinal section, which is shown in simplified form and is discussed only on individual elements. Also in this case, the coupling head 1 is shown in the uncoupled state.
  • the pneumatic brake line 8 with the brake line of the counter-coupling, this is provided in the region of the mouth of the coupling plate 2 with the axially displaceable sealing body 10, which has an axial passage opening and is provided on its front side with an annular sealing surface 12.
  • the first portion of the brake pipe 8 extends at a right angle to the coupling surface 3. Behind the coupling plate 2, the brake pipe 8 has a substantially radially opening into the first section 14 channel.
  • an axially displaceable closure piston 15 is arranged, which has a closure part 16 which rests in the active position on the inside of a sealing lip of the sealing body 10 to seal the brake line 8 to the outside.
  • a compression spring 17 loading the sealing body 10 in the extension direction is supported between the sealing body 10 and an annular shoulder surface of the closure piston 15.
  • a mechanical actuating mechanism is provided which, inter alia, has a cam body 37 driven by a shaft 36 with a cam 38.
  • the extending at a right angle to the coupling surface 3 supply line 9 also opens into a substantially radially thereto extending channel 21.
  • an axially displaceable sealing body 11 is provided which has an axial passage opening and is provided on its front side with an annular sealing surface 13.
  • a stationary, ie non-movable closure piston 22 is provided, which is provided with a cylindrically shaped closure member 23 which on the inside of a sealing lip of the sealing body 11 applies and thus the supply line 9 seals to the outside.
  • a compression spring 24 is provided in order to push the sealing body 11 in the rest position shown here, in which it projects beyond the coupling surface 3.
  • the supply line 9 first runs at a right angle to the coupling surface 3, in order then to open into a substantially radially extending channel 21.
  • the two sealing bodies 10, 11 are in any case arranged such that their longitudinal central axes extend at least approximately perpendicular to the coupling surface 3.
  • the Fig. 3 shows a longitudinal section through the enlarged illustrated sealing body 10, which is formed substantially hollow cylindrical.
  • the preferably made of polyurethane sealing body 10 is provided with an annular sealing surface 12 which rises from the outside inwards.
  • an annular recess 26 is provided, through which an annular sealing lip 27 is provided, which is elastically yielding in the axial direction.
  • elastically yielding sealing lip 28 is arranged, which is designed and dimensioned such that it rests sealingly on the lateral surface of the closure part of the closure piston located in the operative position.
  • a recess 29 is arranged, which on the one hand is intended to ensure the elastic resilience of the sealing lip 28 in the radial direction. On the other hand, it should be ensured by the shape of this recess 29 and the sealing lip 28 that this applies by the prevailing in the respective pipe air pressure form fit with a sealing edge on the outside of the lateral surface of the closure part of the closure piston. If the pressure in the line increases, the contact pressure of the sealing lip 28 on the closure part also increases.
  • an annular circumferential stop surface 30 is also arranged, which limits the extension of the sealing body 10 under the action of the compression spring and the air pressure by applying to a snap ring, as will be explained in more detail below.
  • sealing body 10 On the inside of the sealing body 10 is finally provided with a recess 31, which is particularly important in connection with the closure piston of the supply line of importance.
  • the sealing body 10 shown here for both lines 8, 9 is used in identical form both in the brake line 8 as well as in the supply line 9. If in each case an operative position is mentioned in connection with the closure member or the sealing body, then its closing position is to be understood thereby, in which the sealing lip rests in a sealing manner on the closure part of the closure piston. Under rest position is to be understood in each case the open position in which the sealing lip is not applied to the closure part of the closure piston.
  • the Fig. 4 shows the sealing body in a perspective view from which in particular the annular sealing surface 12 and the annular circumferential stop surface 30 can be seen.
  • Fig. 5 shows the supply line 9 in the region of the coupling plate 2 together with the sealing body 11 in the initial state.
  • the sealing body 11 is located by the action of the compression spring 25 in its extended state in which it projects beyond the coupling surface 3.
  • the ejection of the sealing body 11 is limited by acting as a stopper snap ring 33 to which the sealing body 11 rests with its annular stop surface 30.
  • the closure member 23 applies to the inside on the sealing lip 32 of the sealing body 11 and seals the supply line 9 to the outside.
  • On the back of the closure member 23 is provided with a chamfer 24, which is to help in a forward relative movement between the sealing body 11 and the closure member 23 of the closure piston 22 to push the sealing lip 32 in the radial direction to the outside.
  • the prevailing in the supply line 9 air pressure and the formation of the sealing lip 32 is ensured in the initial state shown here that the sealing lip 32 forms a form-fitting manner on the outside of the lateral surface of the closure part 23 of the closure piston 22.
  • Fig. 6 shows a view of the supply line in the region of the coupling plate together with the sealing body 11 in the open position.
  • the sealing body 11 is pushed by the counter-coupling (not shown) against the force of the spring 25 and the air pressure inward.
  • the sealing lip 32 lifts off from the closure part 23 of the sealing body 11, so that a passage between the radial air line 21 and the supply line 9 of the counter-coupling is created and the latter is opened relative to the counter-coupling.
  • the compressed air as indicated by an arrow 34, flow past the radial feed line 21 on the outside of the closure part 23 and leave the sealing body 11 in the axial direction or flow in the opposite direction.
  • the sealing body 11 assumes this position in the normal case only when the two coupling heads of two central buffer couplings to be joined together mechanically rest on one another.
  • Fig. 7 From the Fig. 7 is the brake line 8 in the region of the coupling plate together with the sealing body 10 in the initial state, ie in the closed position (active position) can be seen.
  • the closure piston 15 is displaced by the cam 38 in its front operative position or is held there, so that the sealing lip 28th sealing on the outside of the closure part 16 applies.
  • the closure part 16 of the closure piston 15 is provided on its front side with an outer circumferential phase 18, which is to ensure that the sealing lip 28 is pressed outwardly in the radial direction when the closure member 23 of the closure piston 22 from the rear open to the front closed position is pushed.
  • connection of the brake line 8 of a coupling head 1 with the brake line of the counter-coupling is based on the FIGS. 8 to 11 shown in different phases. Corresponding parts of the counter-coupling are provided with the same reference numerals and additionally an "a".
  • the respective sealing body 10, 10a under the action of the respective compression spring 17, 17a on the coupling surface 3, 3a before.
  • the closure piston 15, 15a is pushed by the cam 38, 38a in the front operative position or held in the front operative position in which he closes the respective brake line 8, 8a, so that it is sealed to the outside.
  • the closure part 16, 16a of the closure piston 15, 15a rests against the inside on the sealing lip 28, 28a of the respective sealing body 10, 10a.
  • the sealing lips 28, 28a engage positively under the effect of the air pressure P prevailing in the brake line 8, 8a on the outside of the closure part 16, 16a. If the pressure P increases in the brake line 8, the contact pressure of the sealing lip 28, 28a on the lateral surface of the closure part 16, 16a also increases.
  • the Fig. 9 shows a phase during the approach of the two coupling heads.
  • the two annular end faces of the respective sealing body 10, 10 a touch.
  • the two sealing bodies 10, 10a begin to mutually shift in the direction of the head inner part against the force of the respective compression spring until they finally flush with the coupling surface, as in the Fig. 10 is shown.
  • the two sealing bodies 10, 10a with your Rear on a rear stop to the plant.
  • Between the two coupling heads now only a very small gap, which is largely canceled after the complete coupling of the two coupling heads.
  • the two annular end faces of the respective sealing body 10, 10a begin to deform elastically, so that they come to lie flat against each other and a tight connection between the two sealing bodies 10, 10a is formed.
  • the cam 38, 38a and the closure piston 15, 15a are designed and matched to one another that the axial stroke of the closure piston 15, 15a is greater than the axial displacement path of the sealing body 10, 10a, so that the closure member 16, 16a of the closure piston 15th , 15a moved away in its rearward movement despite the insertion movement of the sealing body 10, 10a of the sealing lip.
  • An inventive designed coupling head is compact, lightweight and can be produced inexpensively. By the previously specified design in particular of the sealing body can be ensured that the pneumatic lines can be safely, quickly and reliably connected to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Seal Device For Vehicle (AREA)
  • Sealing Devices (AREA)
  • Memory System Of A Hierarchy Structure (AREA)

Claims (11)

  1. Attelage à tampon central pour véhicules ferroviaires, comprenant une tête d'attelage (1) pourvue d'au moins une conduite de frein (8) et/ou d'une conduite d'alimentation (9) pneumatique, laquelle tête est pourvue d'un organe de fermeture (15, 22) destiné à fermer et/ou ouvrir la conduite (8, 9) respective, caractérisé en ce que la conduite (8, 9) est pourvue dans la zone du plan d'attelage (3) d'un corps d'étanchéité (10, 11) comprenant une surface d'étanchéité frontale (12, 13), lequel corps comprend une ouverture de passage dans laquelle est disposé un élément d'étanchéité, lequel s'appuie dans la position de fonctionnement de manière étanche contre une partie de fermeture (16, 23) de l'organe de fermeture (15, 22) et ferme la conduite (8, 9).
  2. Attelage à tampon central selon la revendication 1, caractérisé en ce que le corps d'étanchéité (10, 11) peut être déplacé axialement.
  3. Attelage à tampon central selon la revendication 1 ou 2, caractérisé en ce que l'élément d'étanchéité est conçu comme une lèvre d'étanchéité (28, 32) annulairement circulaire, laquelle est conçue de façon élastiquement flexible au moins dans la direction radiale et de telle sorte qu'elle s'appuie, du fait de la pression régnant dans la conduite (8, 9) et/ou du fait de la précontrainte particulière dans la direction radiale par coopération de formes contre la partie de fermeture (16, 23) de l'organe de fermeture (15, 22).
  4. Attelage à tampon central selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps d'étanchéité (10, 11) est sollicité au moyen d'un ressort de compression (17, 25) de telle sorte qu'il dépasse de la surface d'attelage (3) dans la position de repos, une butée (33, 35) étant prévue, qui limite le déplacement d'extension du corps d'étanchéité (10, 11).
  5. Attelage à tampon central selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps d'étanchéité (10, 11) et/ou l'organe de fermeture (15, 22), pendant le processus d'attelage, est/sont déplacé(s) de telle sorte qu'un passage pour l'air comprimé est établi entre la lèvre d'étanchéité (28, 32) du corps d'étanchéité (10, 11) et la partie de fermeture (16, 23) de l'organe de fermeture (15, 22).
  6. Attelage à tampon central selon l'une quelconque des revendications 3 à 5, caractérisé en ce que la partie de fermeture (16, 23) de l'organe de fermeture (15, 22) est conçue au moins en partie de manière cylindrique, le diamètre extérieur de la section cylindrique de la partie de fermeture (16, 23) étant adapté à la lèvre d'étanchéité annulairement circulaire (28, 32) de telle sorte que la lèvre d'étanchéité (28, 32) s'appuie contre la surface périphérique de la section cylindrique de la partie de fermeture (28, 32) située dans la position de fonctionnement, un déplacement relatif axial entre le corps d'étanchéité (10, 11) et l'organe de fermeture (15, 22) ayant lieu lors du processus d'attelage, en ce que le corps d'étanchéité (10, 11) est déplacé par rapport à l'organe de fermeture (15, 22) et/ou l'organe de fermeture (15, 22) est déplacé par rapport au corps d'étanchéité (10, 11) jusqu'à ce que la partie de fermeture (28, 32) s'éloigne de la lèvre d'étanchéité (28, 32) et/ou que la lèvre d'étanchéité (28, 32) s'éloigne de la partie de fermeture (28, 32).
  7. Attelage à tampon central selon l'une quelconque des revendications précédentes, caractérisé en ce que le corps d'étanchéité (10, 11) est conçu de manière sensiblement cylindrique et creuse et est pourvu sur le côté opposé à la tête d'attelage (1) d'une surface d'étanchéité d'extrémité (12, 13), laquelle est élastiquement souple dans la direction axiale.
  8. Attelage à tampon central selon la revendication 7, caractérisé en ce que la surface d'étanchéité (12, 13) est conçue de façon annulaire et augmente de l'extérieur vers l'intérieur.
  9. Attelage à tampon central selon l'une quelconque des revendications précédentes, caractérisé en ce que l'axe longitudinal médian du corps d'étanchéité (10, 11) s'étend au moins presque perpendiculairement à la surface d'attelage (3).
  10. Attelage à tampon central selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe de fermeture (15) est maintenu par un élément d'actionnement mécanique (37) dans la position de fonctionnement dans laquelle il ferme la conduite (8), et en ce que l'organe de fermeture (15), après l'attelage mécanique de la tête d'attelage (1), est libéré de l'élément d'actionnement mécanique (37), de sorte qu'il peut être déplacé dans la position ouverte par la pression régnant dans la conduite (8).
  11. Attelage à tampon central selon la revendication 10, caractérisé en ce que la poussée axiale de l'organe de fermeture (15) est supérieure au trajet de déplacement axial du corps d'étanchéité (10).
EP06405446A 2005-12-23 2006-10-23 Attelage à tampon central pour véhicules ferroviaires Active EP1800987B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH02056/05A CH703159B1 (de) 2005-12-23 2005-12-23 Mittelpufferkupplung für Schienenfahrzeuge.

Publications (2)

Publication Number Publication Date
EP1800987A1 EP1800987A1 (fr) 2007-06-27
EP1800987B1 true EP1800987B1 (fr) 2008-12-03

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EP06405446A Active EP1800987B1 (fr) 2005-12-23 2006-10-23 Attelage à tampon central pour véhicules ferroviaires

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EP (1) EP1800987B1 (fr)
AT (1) ATE416113T1 (fr)
CH (1) CH703159B1 (fr)
DE (1) DE502006002248D1 (fr)
ES (1) ES2317479T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486122A (zh) * 2013-09-30 2014-01-01 江苏海鹏特种车辆有限公司 一种定位夹紧浮动销孔机构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH719144A2 (de) 2021-11-15 2023-05-31 Faiveley Transp Schwab Ag Kupplungskopf für eine Kupplung eines Schienenfahrzeugs.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4108221C2 (de) * 1991-03-14 1998-09-03 Festo Ag & Co Dichtring
US5240271A (en) * 1991-11-07 1993-08-31 Midland Brake, Inc. Tractor-mounted integrated gladhand and quick-release valve for tractor-trailer highway vehicles
EP1300315B1 (fr) * 2001-10-04 2007-01-03 Schwab Verkehrstechnik AG Système d'attelage pour véhicules ferroviaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486122A (zh) * 2013-09-30 2014-01-01 江苏海鹏特种车辆有限公司 一种定位夹紧浮动销孔机构

Also Published As

Publication number Publication date
ES2317479T3 (es) 2009-04-16
EP1800987A1 (fr) 2007-06-27
DE502006002248D1 (de) 2009-01-15
ATE416113T1 (de) 2008-12-15
CH703159B1 (de) 2011-11-30

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