WO2024037882A1 - Élément de fermeture mécanique d'accouplement par traction et accouplement par traction comportant un tel élément de fermeture mécanique d'accouplement par traction - Google Patents

Élément de fermeture mécanique d'accouplement par traction et accouplement par traction comportant un tel élément de fermeture mécanique d'accouplement par traction Download PDF

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Publication number
WO2024037882A1
WO2024037882A1 PCT/EP2023/071499 EP2023071499W WO2024037882A1 WO 2024037882 A1 WO2024037882 A1 WO 2024037882A1 EP 2023071499 W EP2023071499 W EP 2023071499W WO 2024037882 A1 WO2024037882 A1 WO 2024037882A1
Authority
WO
WIPO (PCT)
Prior art keywords
main bolt
coupling
mechanical
center piece
recess
Prior art date
Application number
PCT/EP2023/071499
Other languages
German (de)
English (en)
Inventor
Andreas Schwinning
Diogenes JERKE
Original Assignee
Voith Patent Gmbh
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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2024037882A1 publication Critical patent/WO2024037882A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
    • B61G3/16—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads rigidly connected by rotatable hook plates or discs and balancing links, the coupling members forming a parallelogram, e.g. "Scharfenberg" type

Definitions

  • the present invention relates to a mechanical train coupling lock for a train coupling, in particular a center buffer coupling, according to the preamble of claim 1 and a train coupling with a coupling head which has such a mechanical train coupling lock.
  • Mechanical pull coupling locks have a center piece that is rotatable about a main axis and has a mouth for receiving a coupling eyelet.
  • the coupling head of which each has such a mechanical tension coupling lock the coupling eyes, which are each rotatably connected to the frog, are inserted with their free ends into the mouth of the opposite frog, thereby rotating the frog together with the main bolt by one Main axis and thereby lock the two pull couplings together because the two frogs are mechanically locked together with the coupling eyes.
  • a positive connection is created between the center piece and the main bolt using a so-called feather key connection.
  • a so-called feather key connection is shown, for example, in DE 10 2021132 991 A1.
  • a corresponding feather key is inserted in a form-fitting manner into two opposing recesses, one in the centerpiece and one in the main bolt, and must be glued there.
  • the recess is created as a so-called fitting spring by butting.
  • the feather key glued in this butted keyway must be subjected to a quality inspection.
  • the production of the positive connection between the center piece and the main bolt is therefore time-consuming.
  • Another disadvantage is that it may be necessary to dismantle the center piece, feather key and main bolt for maintenance purposes and reassemble them. This is not possible in the field and requires finding appropriately equipped workshops.
  • a positive component connection in an energy dissipation device of a rail vehicle coupling is disclosed in WO 2021/224305 A1.
  • the present invention is based on the object of specifying a mechanical pull coupling lock with a frog and a main bolt, whereby a positive connection between the frog and the main bolt can be reliably established in a short amount of time and can also be dissolved, in particular for repair purposes.
  • a mechanical train coupling closure with the features of claim 1.
  • the dependent claims describe advantageous and particularly useful embodiments of the invention.
  • a train coupling according to the invention in particular a center buffer coupling, is specified with a coupling head which has a mechanical train coupling lock according to the invention.
  • the mechanical train coupling lock according to the invention has a center piece that can be rotated about a main axis and has a mouth for receiving a coupling eyelet.
  • a coupling eyelet is also advantageously connected to the centerpiece in an articulated manner, so that this coupling eyelet can be inserted with its free end into the mouth of a centerpiece of a counter-similar train coupling lock.
  • the mechanical pull coupling lock according to the invention has a main bolt on which the center piece is mounted in a rotationally fixed manner. This means that rotational movements of the main bolt are transferred to the center piece and vice versa.
  • a positive connection is provided between the center piece and the main bolt, which comprises a connecting element which is inserted in a form-fitting manner into two opposing recesses in the center piece and in the main bolt.
  • the two opposing recesses, one in the centerpiece and one in the main bolt open at the edge and facing each other, so that together they form a hole or a recess cross-section.
  • the recess in the centerpiece together with the recess in the main bolt, forms an at least substantially circular or (completely) circular recess cross-section or elliptical recess cross-section and the connecting element is a pin element, in particular a cylindrical pin if the recess cross-section is circular or a pin element if the recess cross-section is elliptical with an elliptical cross section, which is inserted in a form-fitting manner into this common recess cross section.
  • the design with a circular recess cross-section is viewed as a particularly preferred design.
  • the solution according to the invention offers the advantage of significantly reducing the work steps for producing the positive connection, in particular the provision of the connecting means and the conditions in the connection area on the individual components, and thus making the connection more cost-effective and time-saving overall.
  • Another advantage is the simple, time-saving and precise assembly of the center piece and main bolt of a mechanical pull coupling lock, especially if these have to be assembled in large numbers or replaced in the field. There is also no need for the time-consuming testing that is required after gluing the feather key connection. It is also advantageous to have increased component strength of the center piece due to the elimination of the fitting springs that have a notch effect.
  • the manufacturing effort for the required grooves on the center piece and bolts is therefore further reduced compared to versions with several such connecting elements.
  • the core is only weakened in one place.
  • the connecting element in particular a cylindrical pin, can preferably be a solid cylindrical pin, that is, a cylindrical pin that is not hollow and does not have a longitudinal bore.
  • a partially or completely hollow design of the cylinder pin is also conceivable. In this case it has a longitudinal bore.
  • the two recesses on the centerpiece and main bolt have cross-sections of different sizes.
  • the cross section of the recess in the centerpiece is larger than the cross section of the recess in the main bolt.
  • the connecting element in particular in the case of a circular cross section, the cylinder pin can be arranged with a cylinder pin center axis outside the main bolt in the center piece and is therefore enclosed by the center piece along its outer circumference, seen in a cross section perpendicular to the cylinder pin center axis, over a larger section than by the main bolt.
  • the cylinder pin center axis is therefore located outside a flight circle of the main bolt in a cross section through the recess. This allows the cylindrical pin to hold itself in the centerpiece, which means that gluing is no longer necessary.
  • the cylinder pin extends parallel to the main bolt, i.e. the cylinder pin center axis is parallel to the main axis.
  • the invention eliminates the notch effect of a keyway, which has a positive effect on the component strength of both the core and the main bolt.
  • advantages can be achieved in the maintenance of the pull coupling lock because the cylindrical pin can be easily removed in order to eliminate the positive connection between the centerpiece and the main bolt.
  • the cylinder pin is preferably inserted into the centerpiece and/or the main bolt with a transition fit or even a clearance fit. In order to achieve a particularly secure fit of the cylinder pin, it can be inserted into the center piece and/or the main bolt with a press fit.
  • the cylinder pin is only inserted with a press fit in the center piece and without a press fit in the main bolt.
  • a clearance fit can therefore be provided in the main bolt, which in particular has at least almost zero clearance.
  • the cylinder pin can be inserted into a blind hole in the centerpiece, so that a corresponding peripheral projection in the centerpiece forms the bottom of the blind hole.
  • a through hole in the centerpiece is also possible.
  • the blind hole offers the advantage that the cylinder pin does not simply fall out when dismantling. This is a significant advantage, particularly when carrying out replacement work in the field, as it prevents the track from falling into the track bed.
  • the combination of blind hole and enlarged design of the recess on the center piece compared to the recess on the main bolt is particularly advantageous.
  • the recess on the centerpiece encompasses the connecting element up to its central area, which means that it cannot fall out either when viewed in the longitudinal direction of the main bolt or across the recess on the centerpiece (off-center recess).
  • a train coupling according to the invention has a coupling head which includes a mechanical train coupling lock of the type shown here.
  • the train coupling is designed in particular as a center buffer coupling.
  • Figure 1 shows an exemplary embodiment of a mechanical train coupling closure according to the present invention in a plan view obliquely from above;
  • Figure 2 shows an axial section through the main bolt of the mechanical pull coupling lock from Figure 1;
  • Figure 3 is an enlarged sectional view of the positive connection between the center piece and the main bolt.
  • FIG. 1 shows an exemplary embodiment of a mechanical pull coupling closure according to the invention, comprising a core piece 1 which is mounted on a main bolt 2 with a positive connection.
  • the centerpiece 1 can be rotated together with the main bolt 2 about a main axis 6 and has a mouth 5 for receiving a coupling eyelet (not shown).
  • a connection 10 is provided for a coupling eyelet, not shown here, with a corresponding axis of rotation of the connection 10 being parallel to the main axis 6.
  • a recess 7 is made in the centerpiece 1 and a recess 8 is made in the main bolt 2.
  • the two recesses can be seen particularly in Figures 2 and 3.
  • the two recesses 7, 8 are directly opposite each other and together form a circular recess cross section, seen in a cross section perpendicular to the main axis 6.
  • a cylindrical pin 3 is inserted into this common recess cross section as a connecting element.
  • the cylinder pin center axis 4 which extends through the center of the common recess, is offset in the direction of the center piece 1, so that the cross section of the recess 7 in the center piece 1 is larger than the cross section of the recess 8 in the main bolt 2 is.
  • the recess 7 in the center piece 1 is preferably made by a blind hole 9 into which the cylinder pin 3 is inserted.
  • this offers the advantage that the cylinder pin is held captively even when the main bolt is dismantled.
  • a through hole could also be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L'invention concerne un élément de fermeture mécanique d'accouplement par traction comprenant une pièce centrale qui peut tourner autour d'un axe principal et qui comporte une embouchure pour recevoir une patte d'accouplement ; un boulon principal sur lequel la pièce centrale est montée à demeure en rotation ; une liaison de verrouillage entre la pièce centrale et le boulon principal, la liaison comprenant un élément de liaison qui est inséré par verrouillage dans deux découpes opposées dans la pièce centrale et dans le boulon principal. L'élément de fermeture mécanique d'accouplement par traction selon l'invention est caractérisé en ce que la découpe dans la pièce centrale et la découpe dans le boulon principal forment ensemble une section transversale de découpe au moins sensiblement circulaire, et l'élément de liaison est une broche cylindrique.
PCT/EP2023/071499 2022-08-15 2023-08-03 Élément de fermeture mécanique d'accouplement par traction et accouplement par traction comportant un tel élément de fermeture mécanique d'accouplement par traction WO2024037882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022120503 2022-08-15
DE102022120503.7 2022-08-15

Publications (1)

Publication Number Publication Date
WO2024037882A1 true WO2024037882A1 (fr) 2024-02-22

Family

ID=87567385

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/071499 WO2024037882A1 (fr) 2022-08-15 2023-08-03 Élément de fermeture mécanique d'accouplement par traction et accouplement par traction comportant un tel élément de fermeture mécanique d'accouplement par traction

Country Status (2)

Country Link
DE (1) DE102023120578A1 (fr)
WO (1) WO2024037882A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10435046B2 (en) * 2017-04-18 2019-10-08 Qingdao Sri Technology Co., Ltd. Coupler uncoupling control mechanism
WO2021071416A1 (fr) * 2019-10-08 2021-04-15 Dellner Couplers Ab Clef de plaque à crochet, ensemble à plaque à crochet comprenant une clef, et procédés de fabrication et de montage d'une clef de plaque à crochet
WO2021224305A1 (fr) 2020-05-06 2021-11-11 Voith Patent Gmbh Liaison de composants par complémentarité de forme, élément de liaison et accouplement de véhicule ferroviaire comportant une telle liaison de composants pour lier au moins deux composants
DE102021132991A1 (de) 2020-12-15 2022-06-15 Voith Patent Gmbh Automatische Zugkupplung und Verfahren zum Entkuppeln einer automatischen Zugkupplung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10435046B2 (en) * 2017-04-18 2019-10-08 Qingdao Sri Technology Co., Ltd. Coupler uncoupling control mechanism
WO2021071416A1 (fr) * 2019-10-08 2021-04-15 Dellner Couplers Ab Clef de plaque à crochet, ensemble à plaque à crochet comprenant une clef, et procédés de fabrication et de montage d'une clef de plaque à crochet
WO2021224305A1 (fr) 2020-05-06 2021-11-11 Voith Patent Gmbh Liaison de composants par complémentarité de forme, élément de liaison et accouplement de véhicule ferroviaire comportant une telle liaison de composants pour lier au moins deux composants
DE102021132991A1 (de) 2020-12-15 2022-06-15 Voith Patent Gmbh Automatische Zugkupplung und Verfahren zum Entkuppeln einer automatischen Zugkupplung

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
BURGTORF, U.; GARZKE, M.; SCHÄFER, G.: "Spielbehaftete Längsstift-Verbindungen - eine unterschätzte Welle-Nabe-Verbindung ?", MITTEILUNGEN AUS DEM INSTITUT FÜR MASCHINENWESEN DER TECHNISCHEN UNIVERSITÄT CLAUSTHAL NR. 22 (NOVEMBER 1997), 1 November 1997 (1997-11-01), pages 19 - 24, XP093092470, ISSN: 0947-2274, Retrieved from the Internet <URL:https://old.imw.tu-clausthal.de/fileadmin/Bilder/Forschung/Publikationen/Mitt_1997/97_03.pdf> [retrieved on 20231017] *
BURGTORF, UGARZKE, MSCHÄFER, G: "Spielbehaftetes Längsstiftverbindungen - eine unterschätzte Welle-Nabe-Verbindung?", MITTEILUNGEN AUS DEM INSTITUT FÜR MASCHINENWESEN DER TECHNISCHEN UNIVERSITÄT CLAUSTHAL, no. 22, 1997, pages 19 - 24
KORTE, T: "Gestaltfestigkeit von Längsstiftverbindungen", MITTEILUNGEN AUS DEM INSTITUT FÜR MASCHINENWESEN DER TECHNISCHEN UNIVERSITÄT CLAUSTHAL, no. 33, 2008, pages 17 - 22
SCHÄFER, G.; KORTE, T: " Längsstifte als kerbarme Welle-Nabe-Verbindung", MITTEILUNGEN AUS DEM INSTITUT FÜR MASCHINENWESEN DER TECHNISCHEN UNIVERSITÄT CLAUSTHAL, vol. 43, 2018, pages 23 - 24

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Publication number Publication date
DE102023120578A1 (de) 2024-02-15

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