EP4146946A1 - 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 - Google Patents

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

Info

Publication number
EP4146946A1
EP4146946A1 EP21725438.2A EP21725438A EP4146946A1 EP 4146946 A1 EP4146946 A1 EP 4146946A1 EP 21725438 A EP21725438 A EP 21725438A EP 4146946 A1 EP4146946 A1 EP 4146946A1
Authority
EP
European Patent Office
Prior art keywords
component
connecting element
component connection
connection according
notch
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
EP21725438.2A
Other languages
German (de)
English (en)
Inventor
Christoph Nikolaus
Eckart JÄDE
Arthur Kontetzki
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.)
Voith Patent GmbH
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 EP4146946A1 publication Critical patent/EP4146946A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread

Definitions

  • the present invention relates to a form-fitting component connection, a connecting element for such a component connection and a rail vehicle coupling with at least one form-fitting component connection for connecting at least two components.
  • predetermined component connections fail in a controlled manner when a specified failure load is reached in order to avoid overloads in other areas of the construction having the form-fitting component connection or to enable alternative load paths.
  • Conventional form-fitting component connections have at least one first component and at least one second component as well as a connection element that connects the first component with the second component in a form-fitting manner and is designed, for example, as a screw.
  • the screw has a specific cross-sectional weakening due to a circumferential groove made in its surface. Depending on its geometry, this circumferential groove sets the desired failure load at which the screw shank shears off.
  • the present invention is based on the object of specifying a form-fitting component connection, for example in an energy dissipation device of a rail vehicle coupling, the component connection withstanding load conditions up to an exactly adjustable failure load and at the same time having a comparatively high fatigue strength. Furthermore, if possible, the component connection should also be suitable for component connections that are characterized by two or more interfaces.
  • a connecting element for a form-fitting component connection is characterized by claim 13, a rail vehicle coupling with such a component connection by claim 14.
  • the dependent claims describe advantageous and particularly useful configurations of the component connection and
  • Rail vehicle coupling in particular an energy dissipation device of a rail vehicle coupling with such a form-fitting component connection.
  • the form-fitting component connection has at least one first component and at least one second component as well as a connection element that connects the first component to the second component in a form-fitting manner.
  • the connecting element is inserted through a hole penetrating the first component and the second component along an axis.
  • the connecting element has a hollow core extending along the axis.
  • the connecting element in addition to the hollow core, has at least one notch along its outer circumference, the notch preferably extending over the entire circumference, although a partial circumferential notch is also possible.
  • the hollow core which can extend concentrically to the axis, for example, allows a significantly higher fatigue strength of the connecting element to be achieved because the section modulus increases considerably compared to that of the known connecting elements. As a result, a significantly higher fatigue strength can be achieved with an identical given failure load.
  • the failure load can be precisely adjusted with a notch, since the notch represents a corresponding cross-sectional weakening and creates a notch effect.
  • the cross-sectional shape of the notch can be angular and / or round.
  • the combination of hollow core and notch thus offers the advantage of a very precise setting of the maximum possible transferable forces and thus a predefined failure load at which the connection is canceled by failure of the connecting element.
  • the component connection can be designed as a pre-stressed or non-pre-stressed connection.
  • a pre-tensioned design different variants are possible as to how the pre-tension is applied, for example by means of a screw connection or a plug connection with a counter element.
  • various drives are possible on the connecting element and / or on a counter element, such as external drives, for example external hexagon, or internal drives, for example with a hexagon socket or with a star shape.
  • the connecting element has a cylindrical, inside the bore through the first component and the second component extending shaft.
  • a shaft is particularly easy to manufacture and can easily be introduced into the components, for example through a correspondingly circular bore.
  • the hollow core within the connecting element is designed as a blind bore extending along the axis.
  • an area of the connecting element bearing a thread can be embodied without a core, that is to say solid.
  • the core is designed as a through hole through the connecting element. In this way, a particularly uniform section modulus can be achieved along the axis.
  • At least two or more filling elements are arranged in the hollow core, the extension of which ends in the area of the notches when viewed in the direction of the longitudinal axis.
  • the core filled in this way has a parting plane in the area of the shear plane, the rigidity of the overall system being higher at the same time.
  • the connecting element is manufactured as a 3D printed component and at least one, preferably a plurality of the cores are provided, which are arranged and designed in the interior of the connecting element in order to create recesses or recesses extending in the longitudinal direction of the connecting element in the area of the notch To form cavities.
  • the hollow cross section is thus only provided in the area of the actual shear surface.
  • the advantage of such a design consists in a considerable stiffening of the connecting element and thereby possibly a shorter path to total failure.
  • the individual core can be cylindrical, which makes it particularly easy to manufacture. However, other cross-sectional shapes, for example a star shape or a polygon shape, are also possible. An elliptical shape or other arched shapes are also possible in principle.
  • the connecting element is preferably designed as a screw. Accordingly, the connecting element can have a screw head and a thread onto which a counter element, for example a nut, is screwed or into which a counter element is screwed.
  • the screw head and / or the counter element can, as explained, have a corresponding drive, internal drive and / or external drive.
  • the first component and the second component are preferably prestressed against one another along the axis by the connecting element.
  • the connecting element is designed as a screw, it is preferably installed with a predetermined tightening torque. This allows a failure load to be set exactly.
  • the connecting element has a notch along its outer circumference in the region of at least one interface between the first component and the second component.
  • the notch extends in particular at least partially, preferably completely in the circumferential direction around the axis of the connecting element.
  • the notch is preferably arranged and aligned in a plane which is aligned perpendicular to a plane that can be written on through the axis of the connecting element and a perpendicular to this plane.
  • the invention can be used both with single-layer component connections and with multi-layer component connections.
  • a single-shear connection there is a single interface between the first component and the second component.
  • multi-tier connections there are at least two Interfaces between the first component and the second component.
  • more than two components can also be connected to one another with the connecting element, with a correspondingly increased number of interfaces between the components.
  • At least one corresponding notch is preferably provided for each interface on the outer circumference of the connecting element, which is advantageously positioned directly in the region of the interface.
  • Component connections of this type can be used particularly advantageously in connections in rail vehicle couplings in which a targeted failure of the connection element is to be brought about when a predefined load is exceeded.
  • a rail vehicle coupling according to the invention therefore has at least one form-fitting component connection of the type shown.
  • the use of such connecting elements in an energy dissipation device of a rail vehicle coupling and / or the linkage or support on a car body is particularly advantageous.
  • a form-fitting component connection is designed according to one of claims 1 to 12 on a predefined failure load as a function of the dimensioning of the hollow core and at least one of the following parameters or the group of parameters:
  • the maximum permissible force up to failure within the connection can be set locally in a targeted manner.
  • FIG. 1a shows, by way of example, a first embodiment of a form-fitting component connection
  • FIG. 1b shows, by way of example, a second embodiment of a form-fitting component connection
  • FIG. 2 shows a further development of a form-fitting component connection according to FIG. 1a;
  • FIG. 3 shows, by way of example, a further embodiment of a form-fitting component connection
  • FIG. 4 shows an example of an application of a form-fitting connection according to the invention in a rail vehicle coupling.
  • a form-fitting component connection according to the invention is shown, which is, for example, part of an energy dissipation device of a rail vehicle coupling.
  • the interlocking component connection has at least one first component 1 and at least one second component 2.
  • the component connection is designed in two sections with a first interface I and a second interface II. However, this is not mandatory.
  • a bore 4 is made through the two components 1, 2 and extends along the X axis.
  • a connecting element 3 is inserted into the bore 4, which in the exemplary embodiment shown, but not necessarily, extends beyond both axial ends of the bore 4.
  • the connecting element 3 could also be screwed into one of the components 1, 2 or otherwise fastened in the component 1, 2, for example with a form-fitting and / or frictional connection.
  • the connecting element 3 is characterized by an extension in the longitudinal direction and has a hollow core 5 which, viewed in the connection situation, extends along the axis X. The extension thus also takes place in the longitudinal direction of the connecting element 3.
  • the hollow core 5 extends in the direction of the longitudinal axis and also the axis X.
  • the hollow core 5 can be designed, for example, as a blind hole as in FIG. 1a, or as a through-hole, as shown in FIG. 1b.
  • the connecting element 3 is designed as a screw which has a screw head 7 resting on the first component 1, an adjoining shaft 8 and an external thread 9, onto which a nut 10, which is also supported on the first component 1 via a washer 11, is screwed is. If a single-shear connection were provided, the nut 10 would correspondingly be supported on the second component 2.
  • the connecting element 3 is characterized by an extension in the longitudinal direction, the longitudinal axis coinciding with the X axis.
  • a notch 6 is provided in the outer surface of the shaft 8, which extends along the circumference of the connecting element 3 and, in the exemplary embodiment shown, is positioned exactly in the area of the respective interface I, II. However, a different positioning could also be selected.
  • the notch 6 can have a round and / or angled cross section.
  • FIG. 2 shows a further development of how this can be used for the embodiments according to FIGS. 1a and 1b.
  • FIG. 2 shows a further development of the embodiment according to FIG. 1a.
  • the hollow core 5, designed as a blind bore according to FIG. 1a is filled by means of filling elements 18.1 to 18.3, in the illustrated case in the form of fully cylindrical elements.
  • the design according to Figure 2 is also suitable for through-holes, in which case the through-hole, viewed in the longitudinal direction of its course, is characterized by different cross-sectional areas in order to ensure support for the filling elements 18.1 to 18.3, in particular the fully cylindrical elements, and to prevent them from falling out.
  • FIG. 3 shows an example of a connection situation as shown in FIGS. 1 and 2, an alternative embodiment of a connection element 3 as a 3D printed component.
  • this one or more hollow cores 5 are provided, which are arranged within the connecting element 3, the arrangement and alignment being carried out in such a way that, viewed in the longitudinal direction of the connecting element 3, they are arranged in the region of the notches 6 and are arranged in the longitudinal direction via a Partial area of the extension of the connecting element 3 extending recess or cavity 12.1 to 12.3 are formed.
  • the cross-section of the individual cavity corresponds, viewed transversely to the longitudinal direction of the connecting element 3, with regard to the selected Basic geometry preferably that of the connecting element, but with smaller dimensions.
  • Figure 4 shows an example of an application of a component connection according to the invention in a rail vehicle coupling 13 Coupling head 14 with coupling rod 15 on the car body takes place via a linkage 16.
  • component connection according to the invention in a linkage 16 on the car body, for example in the form of shear bolts between the joint and the bearing or the bearing and the car body, etc.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Dowels (AREA)

Abstract

L'invention concerne une liaison par complémentarité de forme comportant au moins un premier composant et au moins un deuxième composant ; un élément de liaison qui relie le premier composant par complémentarité de forme au second composant, et qui est inséré à travers un trou traversant le premier composant et le second composant le long d'un axe. La liaison par complémentarité de forme selon l'invention est caractérisée en ce que l'élément de liaison présente un coeur creux qui s'étend le long de l'axe.
EP21725438.2A 2020-05-06 2021-05-05 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 Pending EP4146946A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020112157.1A DE102020112157A1 (de) 2020-05-06 2020-05-06 Formschlüssige Bauteilverbindung und Energieverzehrvorrichtung einer Schienenfahrzeugkupplung mit einer solchen Bauteilverbindung
PCT/EP2021/061806 WO2021224305A1 (fr) 2020-05-06 2021-05-05 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

Publications (1)

Publication Number Publication Date
EP4146946A1 true EP4146946A1 (fr) 2023-03-15

Family

ID=75914495

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21725438.2A Pending EP4146946A1 (fr) 2020-05-06 2021-05-05 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

Country Status (4)

Country Link
EP (1) EP4146946A1 (fr)
CN (1) CN115485482A (fr)
DE (1) DE102020112157A1 (fr)
WO (1) WO2021224305A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024037882A1 (fr) 2022-08-15 2024-02-22 Voith Patent Gmbh Élément de fermeture mécanique d'accouplement par traction et accouplement par traction comportant un tel élément de fermeture mécanique d'accouplement par traction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9404979D0 (en) * 1994-03-15 1994-04-27 Sicame Electrical Dev Ltd Improvements relating to clamping screws
GB0021277D0 (en) * 2000-08-31 2000-10-18 B & H Nottingham Ltd Shearable fastener
US6981599B2 (en) 2003-08-08 2006-01-03 Westinghouse Air Brake Technologies Corporation High capacity shear mechanism
US7766177B2 (en) 2006-12-08 2010-08-03 Wabtec Holding Corp. Fatigue-resistant emergency release device for rail transit vehicle coupler
JP6226325B2 (ja) * 2014-01-31 2017-11-08 飛栄建設株式会社 破壊検知センサ、破壊検知システムおよび構造物
EP3283777A4 (fr) * 2015-04-17 2018-12-05 NMC Group, Inc. Dispositif de fixation d'écrou à séparation hybride métal-composite
DE102016218054B4 (de) * 2016-09-21 2019-10-10 HYDRO Holding KG Schleppstange für Flugzeuge

Also Published As

Publication number Publication date
WO2021224305A1 (fr) 2021-11-11
DE102020112157A1 (de) 2021-11-11
CN115485482A (zh) 2022-12-16

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