EP4434843A1 - Dispositif de tamponnement et de traction, notamment pour attelage central - Google Patents

Dispositif de tamponnement et de traction, notamment pour attelage central Download PDF

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Publication number
EP4434843A1
EP4434843A1 EP24163296.7A EP24163296A EP4434843A1 EP 4434843 A1 EP4434843 A1 EP 4434843A1 EP 24163296 A EP24163296 A EP 24163296A EP 4434843 A1 EP4434843 A1 EP 4434843A1
Authority
EP
European Patent Office
Prior art keywords
spring mechanism
pulling
wedge
longitudinal member
vehicle structure
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.)
Pending
Application number
EP24163296.7A
Other languages
German (de)
English (en)
Inventor
Mark Radnoti
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.)
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Schienenfahrzeuge 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 Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Publication of EP4434843A1 publication Critical patent/EP4434843A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
    • B61G9/00—Draw-gear
    • B61G9/04—Draw-gear combined with buffing appliances
    • B61G9/06—Draw-gear combined with buffing appliances with rubber springs

Definitions

  • the present invention relates to a pulling and buffering device for a freight train coupling, in particular a central buffer coupling, comprising a spring mechanism for absorbing compressive forces which act from a front spring mechanism housing for the articulated attachment of a coupling shaft via the spring mechanism to a rear longitudinal member for transmitting compressive forces to a vehicle structure, wherein tensioning means are provided for applying a pre-tensioning force to the spring mechanism.
  • the invention also relates to a modular system for such a pulling and buffering device and to a freight wagon which is equipped with a pulling and buffering device according to the invention.
  • the field of application of the invention extends to rail vehicle technology, in particular to freight train couplings.
  • the central buffer couplings of primary interest here are arranged centrally on the longitudinal axis of a wagon and transmit the tensile and compressive forces that occur in rail vehicle traffic between wagons coupled to one another.
  • the tensile and compressive force device requires a so-called spring mechanism to absorb compressive forces in order to avoid damage to the vehicle structure of a wagon due to high pressure pulses.
  • a conventional traction and buffer device is produced, which is particularly suitable for central buffer couplings.
  • a coupling shaft of a central buffer coupling can be attached horizontally pivoting via the front part of a spring mechanism housing.
  • the forces acting on the traction and buffer device are transmitted via a pressure plate to a spring mechanism, which comprises a compression spring and a hydraulic and/or pneumatic damper.
  • a spring mechanism which comprises a compression spring and a hydraulic and/or pneumatic damper.
  • another pressure plate which enables a cushioned introduction of force into the vehicle structure.
  • the vehicle structure includes a so-called installation pocket, which accommodates the components of the drawbar and buffer device described above as a pre-assembled unit.
  • Such installation pockets are standardized in terms of their structural design, in particular their geometric dimensions, in the international standard UIC 530-1.
  • the WO 2019/240 660 A1 discloses a technical solution for a simplified assembly and disassembly of a traction and buffing device within a standardized installation pocket of a freight wagon, which does not require additional auxiliary tools for compressing the spring mechanism. Instead, this traction and buffing device comprises integrated wedge clamping devices for generating a preload of the spring mechanism. When two tensioning screws are tightened evenly, these integrated wedge clamping devices ensure that the traction and buffing device is extended due to the convergence of inclined planes of various wedge elements in order to fit it into a standardized installation pocket.
  • the said wedge clamping devices can be arranged at different positions along the force flow of the traction and buffing device.
  • the wedge clamping devices In the first case, it is proposed to arrange the wedge clamping devices between a front holding arrangement and an anchor. According to a second alternative, the wedge clamping devices can be integrated between the anchor and a spring mechanism. According to the third alternative, integration is also disclosed between the spring mechanism and a rear holding arrangement. The integration always takes place between components of the traction and buffing device that are adjacent to one another in the longitudinal direction.
  • the wedge clamping means themselves are designed in at least three parts and comprise a first wedge piece with a first inclined plane and a second wedge piece with a second inclined plane, which interacts with the first inclined plane for longitudinal adjustment.
  • the arrangement is supplemented by a third contact element without an inclined plane.
  • the first and third elements form the outer components for enclosing the second, middle element.
  • the third element can also be provided with an inclined plane similar to the first element in order to achieve a doubling of the longitudinal adjustment compared to the first embodiment with the same adjustment path of the transverse adjusting screw.
  • the invention includes the technical teaching that the rear end face of a rear longitudinal member of a traction and impact device as an integral component of the wedge clamping means runs at an acute angle ⁇ with respect to a transverse plane Q directed at right angles to the longitudinal axis L, against which a pre-tensioning wedge comes into contact, the rear side of which is designed to run parallel to the transverse plane Q for direct contact with the vehicle structure.
  • the rear longitudinal member forms a distance-bridging component between a Spring mechanism and a vehicle structure preferably formed by a standardized installation pocket.
  • one of the inclined planes of the wedge clamping means is an integral part of a rear longitudinal member, which primarily performs the function of a supporting distance bridging element for the purpose of adapting the shape to a standardized installation pocket.
  • the wedge clamping means according to the invention comprise at least one clamping screw arranged in the transverse direction between the pre-tensioning wedge and the rear longitudinal member in order to achieve an extension when screwed in to generate the desired pre-tensioning force on the spring mechanism relative to the vehicle structure.
  • two clamping screws arranged parallel and spaced apart from one another are provided for this purpose, which also increases the release security of the wedge clamping means.
  • the pre-tensioning wedge of the wedge clamping means be H-shaped in shape and function to match the preferably two clamping screws.
  • it is composed in one piece from two wedge leg sections connected to one another in parallel via a transverse section.
  • the wedge leg sections should preferably have an angled or groove-shaped cross section in order to form a sliding guide for the wedge clamping means in conjunction with a corresponding shape on the front side of the longitudinal member.
  • the positive connection can thus ensure that the wedge clamping means slide evenly onto one another by tightening the at least one clamping screw.
  • the spring mechanism housing is provided with an integrated bolt joint for the horizontally pivotable attachment of a coupling shaft.
  • the bolt joint is displaceable in the direction of action of the spring mechanism.
  • a spring mechanism used in connection with the pulling and pushing device according to the invention comprises at least one compression spring designed as a polymer spring, which can be combined with a hydraulic or hydrostatic damper unit connected in parallel to ensure a damped extension in the pulling direction that protects the components.
  • the spring mechanism housing which at least largely protects the spring mechanism, can also have several stop sections running in the direction of the longitudinal beam, which come into contact with the longitudinal beam with the distal end in order to form an end stop for the compressed spring mechanism.
  • the end stop for the compressed spring mechanism is preferably a pull rod arranged coaxially to the spring mechanism, which in conjunction with the spring mechanism housing and the longitudinal beam defines the extended end position of the spring mechanism.
  • the spring mechanism in different spring strengths to adapt to different loads while keeping the overall length as constant as possible.
  • the spring mechanism can also be provided in different stroke lengths to adapt to different energy absorption strengths, which is preferably achieved by varying the number of Polymer pads.
  • Fig.1 is a draw and buffer device 1 of a central buffer coupling on a vehicle structure 2 of a - not further shown - freight wagon of a Rail vehicle.
  • a coupling shaft 3 of a central buffer coupling is pivotably connected horizontally to the traction and buffering device 1.
  • a coupling head 4 is arranged on the distal end of the coupling shaft 3 for preferably automatic coupling with a corresponding central buffer coupling of an opposite wagon.
  • FIG. 2 There is a box-shaped installation pocket 5 in the vehicle structure 2 of the car to accommodate the drawbar and buffer device 1.
  • the installation pocket 5 is designed in a standardized manner in accordance with the UIC 530 standard.
  • the drawbar and buffer device 1 is installed in the installation pocket 5 from below.
  • the component connection is made detachable using a screw connection.
  • the pulling and pushing device 1 essentially consists of a front spring mechanism housing 10, which is equipped with a hinge pin 11 for the horizontally articulated attachment of the coupling shaft (not shown here), which, together with a pressure plate 12, can be moved longitudinally relative to the front spring mechanism housing 10 in order to apply compressive forces to a spring mechanism 13 connected to it.
  • the spring mechanism 13 is also provided on a rear longitudinal member 14 for transmitting compressive forces to the vehicle structure (not shown here) via end-side wedge clamping means 15.
  • the rear end face 16 of the rear longitudinal member 14, as a component of the wedge clamping means, is directed obliquely to the transverse plane, on which an H-shaped pre-tensioning wedge 17 can slide for longitudinal adjustment.
  • the spring mechanism housing 10 also has a plurality of outer stop sections 10a to 10d running in the direction of the longitudinal beam 14, which form an end stop for the compressed spring mechanism 13 when they come into contact with the longitudinal beam 14.
  • An end stop for the rebound spring mechanism 13 is formed by a pull rod 20 arranged coaxially thereto.
  • Fig.4 The longitudinal adjustment is carried out via two parallel clamping screws 18a and 18b arranged at a distance from each other, the uniform screwing of which after placement in the installation pocket creates an extension of the longitudinal member 14 to produce a pre-tensioning force is exerted on the spring mechanism 13 relative to the vehicle structure.
  • the pulling and pushing device can be screwed to the vehicle structure (not shown here) via a lower support plate 19.
  • the pre-tensioning wedge 17 is adjustable in the transverse direction via two tensioning screws 18a and 18b spaced parallel to one another in order to produce an extension in cooperation with the longitudinal member 14.
  • the rear end face 16 of the rear longitudinal member 14 runs at an acute clamping angle ⁇ with respect to a transverse plane Q directed at right angles to the longitudinal axis L, which, according to the alternating angle relationship, also forms the plane of the rear face 21 of the pre-tensioning wedge 17.
  • the acute clamping angle ⁇ is preferably in a range between 5° and 20° in order to realize sufficient longitudinal adjustment with clamping screw actuation that is as free from inhibition as possible.
  • the H-shaped pre-tensioning wedge 17 consists of two wedge leg sections 23a and 23b connected to one another in parallel via a transverse section 22.
  • the wedge leg sections 23a and 23 have a mirror-image groove-shaped cross section 24a and 24b to form sliding guides relative to the longitudinal beam 14.
  • the wedge clamping means can also be designed to be divided lengthwise or crosswise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)
EP24163296.7A 2023-03-20 2024-03-13 Dispositif de tamponnement et de traction, notamment pour attelage central Pending EP4434843A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023106959.4A DE102023106959A1 (de) 2023-03-20 2023-03-20 Zug- und Stoßeinrichtung, insbesondere für eine Mittelpufferkupplung

Publications (1)

Publication Number Publication Date
EP4434843A1 true EP4434843A1 (fr) 2024-09-25

Family

ID=90365121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24163296.7A Pending EP4434843A1 (fr) 2023-03-20 2024-03-13 Dispositif de tamponnement et de traction, notamment pour attelage central

Country Status (2)

Country Link
EP (1) EP4434843A1 (fr)
DE (1) DE102023106959A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019240660A1 (fr) 2018-06-14 2019-12-19 Dellner Couplers Ab Agencement d'attelage de train à module d'expansion axiale
EP3792137A1 (fr) * 2019-09-12 2021-03-17 Faiveley Transport Schwab AG Dispositif pour le maintien d'une direction de traction et de poussée d'un accouplement, en particulier d'un véhicule ferroviaire
DE102022109045A1 (de) 2021-04-19 2022-10-20 Voith Patent Gmbh Zug- und Stoßeinrichtung für eine Zugkupplung und Zugkupplung
EP4339064A1 (fr) * 2022-09-13 2024-03-20 Faiveley Transport Schwab AG Dispositif avec un support d'un dispositif de traction et de poussée d'un système d'attelage pour un véhicule ferroviaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019240660A1 (fr) 2018-06-14 2019-12-19 Dellner Couplers Ab Agencement d'attelage de train à module d'expansion axiale
EP3792137A1 (fr) * 2019-09-12 2021-03-17 Faiveley Transport Schwab AG Dispositif pour le maintien d'une direction de traction et de poussée d'un accouplement, en particulier d'un véhicule ferroviaire
DE102022109045A1 (de) 2021-04-19 2022-10-20 Voith Patent Gmbh Zug- und Stoßeinrichtung für eine Zugkupplung und Zugkupplung
EP4339064A1 (fr) * 2022-09-13 2024-03-20 Faiveley Transport Schwab AG Dispositif avec un support d'un dispositif de traction et de poussée d'un système d'attelage pour un véhicule ferroviaire

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Publication number Publication date
DE102023106959A1 (de) 2024-09-26

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