EP3330153A1 - Rail vehicle with grounding flaps - Google Patents

Rail vehicle with grounding flaps Download PDF

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Publication number
EP3330153A1
EP3330153A1 EP17002072.1A EP17002072A EP3330153A1 EP 3330153 A1 EP3330153 A1 EP 3330153A1 EP 17002072 A EP17002072 A EP 17002072A EP 3330153 A1 EP3330153 A1 EP 3330153A1
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EP
European Patent Office
Prior art keywords
conductor
eyelet
lug
cable lug
rail vehicle
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.)
Withdrawn
Application number
EP17002072.1A
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German (de)
French (fr)
Inventor
Stefan Baumann
Bruno Gebhard
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.)
Siemens Mobility GmbH
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP3330153A1 publication Critical patent/EP3330153A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D17/00—Construction details of vehicle bodies
    • B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
    • B61D17/041—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures with bodies characterised by use of light metal, e.g. aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors
    • H01R4/625—Soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0207—Ultrasonic-, H.F.-, cold- or impact welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail

Definitions

  • the invention relates to a rail vehicle with a Aluminiumrohbau and ground straps, each comprising a cable lug and a conductor, wherein the cable lug is attached to the aluminum shell.
  • earthing straps consisting of a tinned copper composite material to which a ground wire is connected and aluminum welded to the aluminum car body.
  • the structure of such a grounding tab is in Fig. 5-7 disclosed.
  • the rectangular, tinned copper is pressed around the rod-shaped aluminum.
  • the starting material is delivered in poles.
  • To make a grounding lug it is cut to size, drilled, mechanically machined and deburred all around. In this case, a residue-free mechanical processing is necessary because copper residues on aluminum can lead to increased corrosion.
  • the object of the invention is to reduce the manufacturing cost of such grounding straps.
  • a railway vehicle according to the invention in particular passenger transport, comprises an aluminum shell construction and cable lugs attached to the aluminum shell according to the invention, in particular of copper, as ground lugs.
  • the aluminum shell has correspondingly shaped conductors which are attached to the aluminum shell or are formed without joints from the aluminum shell.
  • the conductor is made of aluminum or an aluminum alloy.
  • the cable lug is made of copper or a copper alloy.
  • the cable lug and the conductor are joined together, in particular welded, wherein the joint connection, or the welded joint, by means of electromagnetic pulse forming technology is available.
  • the earthing strap is produced by inserting the conductor into a conductor receptacle of the cable lug and then welding it to the cable lug, in particular with its conductor receptacle, by means of electromagnetic pulse-forming technology. It can be adapted by mechanical deformation of the inner contour of the conductor receiving a inserted into the conductor receptacle of the cable lug end of the conductor before insertion into the conductor receiving the lug, for example, be flattened to be complementary to this, in particular so that the inner cross section of Conductor receptacle and the outer cross section of the conductor undergo a transition fit to fit the conductor in a conductor receptacle of the cable lug.
  • EMPT electromagnetic pulse forming technology
  • a mechanical reworking or special preparation of the cable lug and / or the conductor, e.g. the removal of an aluminum oxide layer is not required.
  • the electrical contact resistance between the cable lug and the conductor is within the range of one measure of a conventionally crimped ground wire by influencing predetermined, adjustable parameters of the EMPT method.
  • the cable lug on a closed, sleeve-shaped conductor receiving in which the conductor is welded.
  • such cable lugs are referred to as compression cable lugs.
  • the conductor receptacle is welded to the conductor.
  • the conductor is an aluminum rod, which forms a transition or press fit with the sleeve-shaped conductor receiving.
  • the aluminum rod has a larger cross section than the sleeve-shaped conductor receiving, in which case the conductor further educated at its inserted into the conductor receiving the cable lug end, in particular by mechanical deformation, can be adapted to the inner contour of the conductor receiving, for example, is flattened, and thus to this is designed complementary.
  • the grounding tab is an eyelet or a fork for attaching the grounding strap, for example with other cable lugs, and a base, which base forms an end face of the conductor receptacle and thus also the grounding tab, the grounding tab being designed to taper from the base to the eyelet.
  • a thickness of the base is thus greater than a thickness of the eyelet or fork.
  • a grounding connection comprises a grounding lug according to the invention and another grounding lug, in particular galvanically connected, which is, for example, identical to the lug of the grounding lug, the further lug being an eyelet or a fork and one in the region of the eyelet or the fork has a substantially constant thickness, and wherein the further cable lug has a thickening, for example for receiving a conductor, wherein the grounding lug according to the invention comprises an eyelet or a fork and in the region of the eyelet or the fork has a substantially constant thickness, and extending in an angular range of at least 120 °, in particular at least 180 °, about a center of the eye or the fork, in particular pointing away from the base, at most to a degree about the center, which is smaller than a distance from a center of the eyelet Furthermore Cable lug to the thickening of the other cable lug. Two similar or even identically designed cable lugs can
  • the earthing tab has an eyelet or a fork and a conductor receptacle, which eyelet or fork at an angle greater than 30 ° and less than 60 °, in particular at an angle of approximately 45 °, to a longitudinal axis of the Ladder receptacle is inclined.
  • Fig. 1 and Fig. 2 is a grounding tab 1 according to the invention in a front view and in a side view each shown partially cut. It has a cable lug 2 and a conductor 3, which are interconnected. The connection is made using electromagnetic pulse forming technology.
  • the conductor 3 is inserted into a conductor receptacle 4 of the cable lug 2. Since the cable lug 2 is in particular a standardized purchased part known from the prior art, the conductor 3 is formed correspondingly complementary to the conductor receptacle 4. Here it is adapted by a pinch as mechanical deformation of the inner contour of the conductor receptacle 4.
  • the conductor receptacle 4 is sleeve-shaped and encloses the conductor 3. It has a constant internal and external cross-section over the length of the conductor receptacle 4.
  • a base 5 forms a first end face of the cable lug 2. It also has this constant inner and outer cross-section.
  • the cable lug 2 comprises an eyelet 6.
  • the eyelet 6 is here designed as a bore with a bore longitudinal axis as the axis 7 of the eyelet 6.
  • To eyelet 6 toward the cable lug 2 tapers the grounding lug 1.
  • the axis 7 forms in front view the center of the eyelet 6 in the plane from.
  • the grounding tab 1 has a substantially constant thickness.
  • the base 5 opposite end face in an angular range ⁇ from here about 270 ° about a center 7 of the eyelet 6, a distance from a grounding tab 1 limiting contour to the center 7 of the eyelet 6 which is smaller than a distance from a center of an eyelet of another cable lug to the thickening of the further cable lug.
  • the cable lug 2 of the grounding lug 1 expands at most within the predetermined angular range about the center 7 of its lug 6, as the distance between the center 7 of the lug 6 and the conductor receptacle 4 has.
  • the area in the predetermined angular range constant thickness.
  • the conductor receptacle 4 has a greater thickness.
  • the range in the predetermined angular range for example, formed semicircular.
  • the angular range of 270 ° is to be regarded as exemplary only. Even smaller angular ranges, for example 180 ° and correspondingly parallel to the base 5 and the axis 7 cutting, are conceivable.
  • the axis 7 of the eyelet 6 intersects in this embodiment, a longitudinal axis 8 of the conductor receiving 4 vertically.
  • the eyelet 6 of in FIG. 3 and FIG. 4 On the other hand, the earthing strap illustrated has an angle of approximately 45 ° to a longitudinal axis 8 of the conductor receiving means 4.
  • the eyelet 6 is a bore in a plane of constant thickness of the cable lug 2, which plane is inclined to the longitudinal axis 8 of the conductor receptacle 4.
  • An eyelet 6 with an axis parallel to the longitudinal axis 8 of the conductor receptacle 4 is not shown here in the drawing.
  • the conductor 3 is in both outlined embodiments, a rod made of aluminum, which is welded to a Aluminiumrohbau a rail vehicle, indicated by the weld 9.
  • the conductor 3 in a suitable manner cohesively connected to the shell, so that a contact resistance between conductors and shell construction is low.
  • the cable lug 2 and the conductor 3 are connected by means of electromagnetic pulse forming technology, in particular so that a contact resistance between the conductor and cable lug 2 is low.
  • FIG. 5 a grounding tab of the prior art is shown.
  • a rectangular aluminum rod of height h and width b is pressed into a tinned copper sleeve of width B and height H.
  • the aluminum rod stands with a length 1 of the copper sleeve over.
  • the grounding tab has the length L and is provided with a bore of diameter D.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Multi-Conductor Connections (AREA)

Abstract

Die Erfindung betrifft ein Schienenfahrzeug mit einem Aluminiumrohbau und an dem Aluminiumrohbau angefügten Kabelschuhen als Erdungslaschen (1), jeweils umfassend einen Kabelschuh (2) und einen Leiter (3), wobei der Kabelschuh (2) und der Leiter (3) miteinander verschweißt sind, wobei die Schweißverbindung mittels elektromagnetischer Pulsumformtechnologie hergestellt ist, wobei die Leiter (3) Aluminiumleiter sind, welche an den Aluminiumrohbau angefügt sind oder aus dem Aluminiumrohbau fügestellenfrei ausgeformt sind.The invention relates to a rail vehicle having an aluminum shell construction and cable lugs attached to the aluminum shell as ground lugs (1), each comprising a cable lug (2) and a conductor (3), wherein the lug (2) and the conductor (3) are welded together, wherein the welded connection is produced by means of electromagnetic pulse-forming technology, wherein the conductors (3) are aluminum conductors, which are attached to the aluminum shell or are formed from the aluminum shell without a joint.

Description

Die Erfindung betrifft ein Schienenfahrzeug mit einem Aluminiumrohbau und Erdungslaschen, jeweils umfassend einen Kabelschuh und einen Leiter, wobei der Kabelschuh an den Aluminiumrohbau angefügt ist.The invention relates to a rail vehicle with a Aluminiumrohbau and ground straps, each comprising a cable lug and a conductor, wherein the cable lug is attached to the aluminum shell.

Die Erdung von Schienenfahrzeug-Komponenten an Aluminium-Wagenkästen erfolgt bei höheren Strömen mit Hilfe von Erdungslaschen, welche aus einem Verbund-Werkstoff aus verzinntem Kupfer, an welchem ein Erdungsseil angeschlossen ist, und Aluminium, welches an den Aluminium-Wagenkasten angeschweißt ist, bestehen. Der Aufbau einer solchen Erdungslasche ist in Fig. 5-7 offenbart. Das rechteckige, verzinnte Kupfer ist dabei um das stangenförmige Aluminium verpresst. Das Ausgangsmaterial wird in Stangen angeliefert. Zum Herstellen einer Erdungslasche wird es zugeschnitten, abgebohrt, rundum mechanisch bearbeitet und entgratet. Dabei ist eine rückstandsfreie mechanische Bearbeitung notwendig, da Kupferrückstände an Aluminium zu erhöhter Korrosion führen können.The earthing of rail vehicle components on aluminum car bodies is carried out at higher currents by means of earthing straps consisting of a tinned copper composite material to which a ground wire is connected and aluminum welded to the aluminum car body. The structure of such a grounding tab is in Fig. 5-7 disclosed. The rectangular, tinned copper is pressed around the rod-shaped aluminum. The starting material is delivered in poles. To make a grounding lug, it is cut to size, drilled, mechanically machined and deburred all around. In this case, a residue-free mechanical processing is necessary because copper residues on aluminum can lead to increased corrosion.

Dokumente WO 2005/055371 A1 , DE 200 18 287 U1 sowie US 5,824,998 A offenbaren Kabelschuhe für Rundkabel aus einzelnen Litzendrähten. Bei der WO 2005/055371 A1 bestehen diese aus verzinntem Aluminium. Gemäß der US 5,824,998 A wird der Kabelschuh mit dem Kabel mittels elektromagnetischer Pulsumformtechnologie verschweißt.Documents WO 2005/055371 A1 . DE 200 18 287 U1 such as US 5,824,998 A reveal cable lugs for round cables made of single stranded wires. In the WO 2005/055371 A1 These are made of tinned aluminum. According to the US 5,824,998 A the cable lug is welded to the cable using electromagnetic pulse forming technology.

Aufgabe der Erfindung ist, die Herstellungskosten für solche Erdungslaschen zu senken.The object of the invention is to reduce the manufacturing cost of such grounding straps.

Gelöst wird die Aufgabe durch den Gegenstand des unabhängigen Patentanspruchs 1. Weiterbildungen und Ausgestaltungen der Erfindung finden sich in den Merkmalen der abhängigen Patentansprüche wieder.The object is achieved by the subject matter of independent claim 1. Further developments and refinements of the invention can be found in the features of the dependent claims again.

Ein erfindungsgemäßes Schienenfahrzeug, insbesondere des Personenverkehrs, umfasst einen Aluminiumrohbau und an dem Aluminiumrohbau erfindungsgemäß angefügte Kabelschuhe, insbesondere aus Kupfer, als Erdungslaschen. Um die Kabelschuhe anzufügen weist der Aluminiumrohbau entsprechend ausgeformte Leiter auf, welche an den Aluminiumrohbau angefügt sind oder aus dem Aluminiumrohbau fügestellenfrei ausgeformt sind. Der Leiter ist aus Aluminium oder aus einer Aluminium-Legierung hergestellt.A railway vehicle according to the invention, in particular passenger transport, comprises an aluminum shell construction and cable lugs attached to the aluminum shell according to the invention, in particular of copper, as ground lugs. In order to attach the cable lugs, the aluminum shell has correspondingly shaped conductors which are attached to the aluminum shell or are formed without joints from the aluminum shell. The conductor is made of aluminum or an aluminum alloy.

Beispielsweise ist der Kabelschuh aus Kupfer oder aus einer Kupfer-Legierung hergestellt. Weiterhin sind der Kabelschuh und der Leiter miteinander gefügt, insbesondere verschweißt, wobei die Fügeverbindung, bzw. die Schweißverbindung, mittels elektromagnetischer Pulsumformtechnologie erhältlich ist.For example, the cable lug is made of copper or a copper alloy. Furthermore, the cable lug and the conductor are joined together, in particular welded, wherein the joint connection, or the welded joint, by means of electromagnetic pulse forming technology is available.

Erfindungsgemäß wird die Erdungslasche hergestellt indem der Leiter in eine Leiteraufnahme des Kabelschuhs eingeführt wird und anschließend mit dem Kabelschuh, insbesondere mit dessen Leiteraufnahme, mittels elektromagnetischer Pulsumformtechnologie verschweißt wird. Es kann ein in die Leiteraufnahme des Kabelschuhs eingeführtes Ende des Leiters vor dem Einführen in die Leiteraufnahme des Kabelschuhs durch mechanische Umformung an die Innenkontur der Leiteraufnahme angepasst werden, beispielsweise flachgedrückt werden, um zu dieser komplementär ausgebildet zu sein, insbesondere so, dass der Innenquerschnitt der Leiteraufnahme und der Außenquerschnitt des Leiters eine Übergangspassung eingehen, um den Leiter in eine Leiteraufnahme des Kabelschuhs einzupassen.According to the invention, the earthing strap is produced by inserting the conductor into a conductor receptacle of the cable lug and then welding it to the cable lug, in particular with its conductor receptacle, by means of electromagnetic pulse-forming technology. It can be adapted by mechanical deformation of the inner contour of the conductor receiving a inserted into the conductor receptacle of the cable lug end of the conductor before insertion into the conductor receiving the lug, for example, be flattened to be complementary to this, in particular so that the inner cross section of Conductor receptacle and the outer cross section of the conductor undergo a transition fit to fit the conductor in a conductor receptacle of the cable lug.

Mittels der Elektromagnetischen Pulsumformtechnologie (EMPT) ist eine stoffschlüssige Verbindung metallischer Komponenten ohne Zuführung von thermischer Energie möglich, durch Aufbau einer metallischen Bindung. "Hierzu erfolgt eine gezielte Beschleunigung der zu verbindenden Bauteile durch ein gepulstes, hochenergetisches Magnetfeld. Im Gegensatz zum thermischen Schweißen tritt keine Gefügebeeinflussung durch Wärmeeinwirkung auf. Darüber hinaus ist mit Hilfe des EMPT-Schweißens auch die stoffschlüssige Verbindung ungleicher und konventionell nicht schweißbarer Materialpaarungen, wie z. B. Aluminium und Stahl, möglich" [http://www.ptu.tudarmstadt.de/mu_forschung/mu_triboligieundoberflaechentechnick/m enu_aktuelleforschungsprojekte/grundlagen_und_mechanismen_des _empt_schweissens/index.de.jsp, abgerufen am 15.03.2012].By means of electromagnetic pulse forming technology (EMPT), a cohesive connection of metallic components without the application of thermal energy is possible by building up a metallic bond. "For this purpose, a targeted acceleration of the components to be connected by a pulsed, high-energy magnetic field., In contrast to the thermal welding occurs no structural influence by heat on .In addition, by means of the EMPT welding also the cohesive connection of unequal and conventionally not weldable material pairings, such. Aluminum and steel, possible "[http://www.ptu.tudarmstadt.de/mu_forschung/mu_triboligieundoberflaechentechnick/m enu_aktuelleforschungsprojekte / grundlagen_und_mechanismen_des_empt_schweissens / index.de.jsp, retrieved on 15.03.2012].

Eine mechanische Nacharbeit oder eine spezielle Vorbereitung des Kabelschuhs und/oder des Leiters, z.B. das Entfernen einer Aluminiumoxidschicht, ist nicht erforderlich. Der elektrische Übergangswiderstand zwischen Kabelschuh und Leiter liegt durch Beeinflussung von vorgegebenen, einstellbaren Parametern des EMPT-Verfahrens im Bereich eines Maßes einer konventionell gecrimpten Erdungsseils.A mechanical reworking or special preparation of the cable lug and / or the conductor, e.g. the removal of an aluminum oxide layer is not required. The electrical contact resistance between the cable lug and the conductor is within the range of one measure of a conventionally crimped ground wire by influencing predetermined, adjustable parameters of the EMPT method.

Unter anderem, um die Bauhöhe der Erfindung zu begrenzen, sind verschiedene Ausführungsformen von Kabelschuhen verwendbar.Among other things, in order to limit the height of the invention, various embodiments of cable lugs can be used.

Gemäß einer Weiterbildung weist der Kabelschuh eine geschlossene, hülsenförmige Leiteraufnahme auf, in welche der Leiter eingeschweißt ist. Herkömmlicherweise werden solche Kabelschuhe als Presskabelschuhe bezeichnet. Hier wird die Leiteraufnahme jedoch mit dem Leiter verschweißt. Insbesondere ist der Leiter eine Aluminiumstange, welche mit der hülsenförmigen Leiteraufnahme eine Übergangs- oder Presspassung bildet. Alternativ weist die Aluminiumstange einen größeren Querschnitt als die hülsenförmige Leiteraufnahme auf, wobei dann der Leiter weitergebildet an seinem in die Leiteraufnahme des Kabelschuhs eingeführten Ende, insbesondere durch mechanische Umformung, an die Innenkontur der Leiteraufnahme angepasst sein kann, beispielsweise flachgedrückt ist, und somit zu dieser komplementär ausgestaltet ist.According to one embodiment, the cable lug on a closed, sleeve-shaped conductor receiving, in which the conductor is welded. Conventionally, such cable lugs are referred to as compression cable lugs. Here, however, the conductor receptacle is welded to the conductor. In particular, the conductor is an aluminum rod, which forms a transition or press fit with the sleeve-shaped conductor receiving. Alternatively, the aluminum rod has a larger cross section than the sleeve-shaped conductor receiving, in which case the conductor further educated at its inserted into the conductor receiving the cable lug end, in particular by mechanical deformation, can be adapted to the inner contour of the conductor receiving, for example, is flattened, and thus to this is designed complementary.

Eine weitere Weiterbildung der Erfindung sieht vor, dass die Erdungslasche eine Öse oder eine Gabel zur Befestigung der Erdungslasche, beispielsweise mit weiteren Kabelschuhen, und eine Basis aufweist, welche Basis eine Stirnseite der Leiteraufnahme und damit auch der Erdungslasche bildet, wobei die Erdungslasche von der Basis zur Öse sich verjüngend ausgestaltet ist. Eine Dicke der Basis ist somit größer als eine Dicke der Öse oder der Gabel.A further development of the invention provides that the grounding tab is an eyelet or a fork for attaching the grounding strap, for example with other cable lugs, and a base, which base forms an end face of the conductor receptacle and thus also the grounding tab, the grounding tab being designed to taper from the base to the eyelet. A thickness of the base is thus greater than a thickness of the eyelet or fork.

In einer weiteren Weiterbildung der erfindungsgemäßen Lösung umfasst ein Erdungsanschluss eine erfindungsgemäße Erdungslasche und einen mit der Erdungslasche, insbesondere galvanisch verbundenen, weiteren Kabelschuh welcher beispielsweise baugleich mit dem Kabelschuh der Erdungslasche ist, wobei der weitere Kabelschuh eine Öse oder eine Gabel und eine im Bereich der Öse oder der Gabel im Wesentlichen konstante Dicke aufweist, und wobei der weitere Kabelschuh eine Verdickung, beispielsweise zur Aufnahme eines Leiters, aufweist, wobei die erfindungsgemäße Erdungslasche eine Öse oder eine Gabel und im Bereich der Öse oder der Gabel eine im Wesentlichen konstante Dicke aufweist, und sich in einem Winkelbereich von zumindest 120°, insbesondere von zumindest 180°, um einen Mittelpunkt der Öse oder der Gabel, insbesondere von der Basis wegweisend, höchstens in einem Maß um den Mittelpunkt ausdehnt, welches kleiner ist als ein Abstand von einem Mittelpunkt der Öse des weiteren Kabelschuhs zu der Verdickung des weiteren Kabelschuhs. Zwei ähnlich oder gar gleich ausgestaltete Kabelschuhe lassen sich somit um die gemeinsame Achse ihrer Ösen, durch welche sie miteinander in Verbindung stehen, in einem weiten Winkelbereich proportional zum angegebenen Winkelbereich gegeneinander verdrehen.In a further development of the solution according to the invention, a grounding connection comprises a grounding lug according to the invention and another grounding lug, in particular galvanically connected, which is, for example, identical to the lug of the grounding lug, the further lug being an eyelet or a fork and one in the region of the eyelet or the fork has a substantially constant thickness, and wherein the further cable lug has a thickening, for example for receiving a conductor, wherein the grounding lug according to the invention comprises an eyelet or a fork and in the region of the eyelet or the fork has a substantially constant thickness, and extending in an angular range of at least 120 °, in particular at least 180 °, about a center of the eye or the fork, in particular pointing away from the base, at most to a degree about the center, which is smaller than a distance from a center of the eyelet Furthermore Cable lug to the thickening of the other cable lug. Two similar or even identically designed cable lugs can thus be rotated about the common axis of their eyes, through which they communicate with each other, in a wide angular range proportional to the specified angular range against each other.

Eine Weiterbildung der Lösung ist darin zu sehen, dass die Erdungslasche eine Öse oder eine Gabel und eine Leiteraufnahme aufweist, welche Öse oder Gabel in einem Winkel größer 30° und kleiner 60°, insbesondere in einem Winkel von näherungsweise 45°, zu einer Längsachse der Leiteraufnahme geneigt ist.A further development of the solution is the fact that the earthing tab has an eyelet or a fork and a conductor receptacle, which eyelet or fork at an angle greater than 30 ° and less than 60 °, in particular at an angle of approximately 45 °, to a longitudinal axis of the Ladder receptacle is inclined.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Sie wird anhand der nachfolgenden Figuren näher erläutert, in denen jeweils ein Ausgestaltungsbeispiel dargestellt ist. Gleiche Elemente in den Figuren sind mit gleichen Bezugszeichen versehen.

Fig. 1
zeigt ein erstes Ausführungsbeispiel einer erfindungsgemäßen Erdungslasche in einer Draufsicht,
Fig. 2
zeigt die Erdungslasche aus Fig. 1 in einer Seitenansicht,
Fig. 3
zeigt ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Erdungslasche in einer Draufsicht,
Fig. 4
zeigt die Erdungslasche aus Fig. 3 in einer Seitenansicht,
Fig. 5
zeigt eine Erdungslasche des Stands der Technik in einer ersten Sicht,
Fig. 6
zeigt die Erdungslasche aus Fig. 5 in einer zweiten Sicht,
Fig. 7
zeigt die Erdungslasche aus Fig. 5 in einer dritten Sicht.
The invention allows numerous embodiments. It will be explained in more detail with reference to the following figures in which in each case a design example is shown. Identical elements in the figures are provided with the same reference numerals.
Fig. 1
shows a first embodiment of a grounding tab according to the invention in a plan view,
Fig. 2
shows the grounding tab Fig. 1 in a side view,
Fig. 3
shows a further embodiment of a grounding tab according to the invention in a plan view,
Fig. 4
shows the grounding tab Fig. 3 in a side view,
Fig. 5
shows a grounding tab of the prior art in a first view,
Fig. 6
shows the grounding tab Fig. 5 in a second view,
Fig. 7
shows the grounding tab Fig. 5 in a third view.

In Fig. 1 und Fig. 2 ist eine erfindungsgemäße Erdungslasche 1 in einer Vorderansicht und in einer Seitenansicht jeweils teilgeschnitten dargestellt. Sie weist einen Kabelschuh 2 und einen Leiter 3 auf, welche miteinander verbunden sind. Die Verbindung ist mittels elektromagnetischer Pulsumformtechnologie hergestellt. Dazu ist der Leiter 3 in eine Leiteraufnahme 4 des Kabelschuhs 2 eingeführt. Da der Kabelschuh 2 insbesondere ein aus dem Stand der Technik bekanntes, standardisiertes Zukaufteil ist, ist der Leiter 3 entsprechend komplementär zur Leiteraufnahme 4 ausgeformt. Hier ist er durch eine Quetschung als mechanische Umformung an die Innenkontur der Leiteraufnahme 4 angepasst.In Fig. 1 and Fig. 2 is a grounding tab 1 according to the invention in a front view and in a side view each shown partially cut. It has a cable lug 2 and a conductor 3, which are interconnected. The connection is made using electromagnetic pulse forming technology. For this purpose, the conductor 3 is inserted into a conductor receptacle 4 of the cable lug 2. Since the cable lug 2 is in particular a standardized purchased part known from the prior art, the conductor 3 is formed correspondingly complementary to the conductor receptacle 4. Here it is adapted by a pinch as mechanical deformation of the inner contour of the conductor receptacle 4.

Die Leiteraufnahme 4 ist dagegen hülsenförmig ausgestaltet und umschließt den Leiter 3. Sie weist hier einen über die Länge der Leiteraufnahme 4 konstanten Innen- und Außenquerschnitt auf. Eine Basis 5 bildet eine erste Stirnseite des Kabelschuhs 2. Auch sie weist diesen konstanten Innen- und Außenquerschnitt auf. Des Weiteren umfasst der Kabelschuh 2 eine Öse 6. Die Öse 6 ist hier als Bohrung ausgestaltet mit einer Bohrungslängsachse als Achse 7 der Öse 6. Zur Öse 6 hin verjüngt sich der Kabelschuh 2 der Erdungslasche 1. Die Achse 7 bildet in der Vorderansicht den Mittelpunkt der Öse 6 in der Zeichenebene ab.On the other hand, the conductor receptacle 4 is sleeve-shaped and encloses the conductor 3. It has a constant internal and external cross-section over the length of the conductor receptacle 4. A base 5 forms a first end face of the cable lug 2. It also has this constant inner and outer cross-section. Furthermore, the cable lug 2 comprises an eyelet 6. The eyelet 6 is here designed as a bore with a bore longitudinal axis as the axis 7 of the eyelet 6. To eyelet 6 toward the cable lug 2 tapers the grounding lug 1. The axis 7 forms in front view the center of the eyelet 6 in the plane from.

Im Bereich der Öse 6 weist die Erdungslasche 1 eine im Wesentlichen konstante Dicke auf. Darüber hinaus weist sie, hier im Bereich einer zweiten, der Basis 5 gegenüberliegenden Stirnseite, in einem Winkelbereich α von hier ungefähr 270° um einen Mittelpunkt 7 der Öse 6, einen Abstand von einer die Erdungslasche 1 begrenzenden Kontur zum Mittelpunkt 7 der Öse 6 auf, welcher kleiner ist als ein Abstand von einem Mittelpunkt einer Öse eines weiteren Kabelschuhs zu der Verdickung des weiteren Kabelschuhs. Da der weitere Kabelschuh insbesondere baugleich ausgestaltet ist, dehnt sich der Kabelschuh 2 der erfindungsgemäßen Erdungslasche 1 im vorgegebenen Winkelbereich somit höchstens soweit um den Mittelpunkt 7 seiner Öse 6 aus, wie der Abstand des Mittelpunkts 7 der Öse 6 zur Leiteraufnahme 4 aufweist. Dabei weist der Bereich im vorgegebenen Winkelbereich konstante Dicke auf. Die Leiteraufnahme 4 hingegen weist eine größere Dicke auf. Darüber hinaus ist der Bereich im vorgegebenen Winkelbereich beispielsweise halbkreisförmig ausgeformt. Der Winkelbereich von 270° ist lediglich als Beispielhaft anzusehen. Auch kleinere Winkelbereiche, beispielsweise 180° und entsprechend parallel zur Basis 5 und die Achse 7 schneidend, sind denkbar.In the region of the eyelet 6, the grounding tab 1 has a substantially constant thickness. In addition, it has, here in the region of a second, the base 5 opposite end face, in an angular range α from here about 270 ° about a center 7 of the eyelet 6, a distance from a grounding tab 1 limiting contour to the center 7 of the eyelet 6 which is smaller than a distance from a center of an eyelet of another cable lug to the thickening of the further cable lug. Since the other cable lug is configured in a particularly identical manner, the cable lug 2 of the grounding lug 1 according to the invention expands at most within the predetermined angular range about the center 7 of its lug 6, as the distance between the center 7 of the lug 6 and the conductor receptacle 4 has. In this case, the area in the predetermined angular range constant thickness. The conductor receptacle 4, however, has a greater thickness. In addition, the range in the predetermined angular range, for example, formed semicircular. The angular range of 270 ° is to be regarded as exemplary only. Even smaller angular ranges, for example 180 ° and correspondingly parallel to the base 5 and the axis 7 cutting, are conceivable.

Die Achse 7 der Öse 6 schneidet in diesem Ausführungsbeispiel eine Längsachse 8 der Leiteraufnahme 4 senkrecht. Die Öse 6 der in Fig. 3 und Fig. 4 veranschaulichten Erdungslasche weist hingegen einen Winkel von näherungsweise 45° zu einer Längsachse 8 der Leiteraufnahme 4 auf. Die Öse 6 ist eine Bohrung in einer Ebene konstanter Dicke des Kabelschuhs 2, welche Ebene zur Längsachse 8 der Leiteraufnahme 4 geneigt ist. Eine Öse 6 mit einer Achse parallel zur Längsachse 8 der Leiteraufnahme 4 ist hier nicht zeichnerisch ausgeführt.The axis 7 of the eyelet 6 intersects in this embodiment, a longitudinal axis 8 of the conductor receiving 4 vertically. The eyelet 6 of in FIG. 3 and FIG. 4 On the other hand, the earthing strap illustrated has an angle of approximately 45 ° to a longitudinal axis 8 of the conductor receiving means 4. The eyelet 6 is a bore in a plane of constant thickness of the cable lug 2, which plane is inclined to the longitudinal axis 8 of the conductor receptacle 4. An eyelet 6 with an axis parallel to the longitudinal axis 8 of the conductor receptacle 4 is not shown here in the drawing.

Der Leiter 3 ist in beiden skizzierten Ausführungsbeispielen eine Stange aus Aluminium, welche an einen Aluminiumrohbau eines Schienenfahrzeugs angeschweißt ist, angedeutet durch die Schweißnaht 9. Alternativ ist der Leiter 3 in geeigneter Art und Weise mit dem Rohbau stoffschlüssig verbunden, so dass ein Übergangswiderstand zwischen Leiter und Rohbau gering ist.The conductor 3 is in both outlined embodiments, a rod made of aluminum, which is welded to a Aluminiumrohbau a rail vehicle, indicated by the weld 9. Alternatively, the conductor 3 in a suitable manner cohesively connected to the shell, so that a contact resistance between conductors and shell construction is low.

Auch hier sind der Kabelschuh 2 und der Leiter 3 mit Hilfe der Elektromagnetischen Pulsumformtechnologie verbunden, insbesondere damit ein Übergangswiderstand zwischen Leiter und Kabelschuh 2 gering ist.Again, the cable lug 2 and the conductor 3 are connected by means of electromagnetic pulse forming technology, in particular so that a contact resistance between the conductor and cable lug 2 is low.

In den Fig. 5, Fig. 6 und Fig. 7 ist eine Erdungslasche aus dem Stand der Technik dargestellt. Ein rechteckförmige Stange aus Aluminium mit der Höhe h und der Breite b ist in eine Hülse aus verzinntem Kupfer mit der Breite B und der Höhe H verpresst. Die Aluminiumstange steht dabei mit einer Länge 1 aus der Kupferhülse über. Die Erdungslasche weist die Länge L auf und ist mit einer Bohrung mit dem Durchmesser D versehen.In the Fig. 5, Fig. 6 and Fig. 7 a grounding tab of the prior art is shown. A rectangular aluminum rod of height h and width b is pressed into a tinned copper sleeve of width B and height H. The aluminum rod stands with a length 1 of the copper sleeve over. The grounding tab has the length L and is provided with a bore of diameter D.

Claims (7)

Schienenfahrzeug mit einem Aluminiumrohbau und an den Aluminiumrohbau angefügten Kabelschuhen als Erdungslaschen (1), jeweils umfassend einen Kabelschuh (2) und einen Leiter (3), dadurch gekennzeichnet, dass der Kabelschuh (2) und der Leiter (3) miteinander verschweißt sind, wobei die Schweißverbindung mittels elektromagnetischer Pulsumformtechnologie hergestellt ist, wobei die Leiter (3) Aluminiumleiter sind, welche an den Aluminiumrohbau angefügt sind oder aus dem Aluminiumrohbau fügestellenfrei ausgeformt sind.Rail vehicle with an aluminum shell construction and cable lugs attached to the aluminum shell as ground straps (1), each comprising a cable lug (2) and a conductor (3), characterized in that the lug (2) and the conductor (3) are welded together the welded connection is produced by means of electromagnetic pulse-forming technology, wherein the conductors (3) are aluminum conductors which are attached to the aluminum shell or are formed free of joints from the aluminum shell. Schienenfahrzeug nach Anspruch 1, dadurch gekennzeichnet, dass der Kabelschuh (2) Kupfer umfasst.Rail vehicle according to claim 1, characterized in that the cable lug (2) comprises copper. Schienenfahrzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Kabelschuh (2) eine einseitig geschlossene, hülsenförmige Leiteraufnahme (4) aufweist, in welche der Leiter (3) eingeführt und mit welcher der Leiter (3) verschweißt ist.Rail vehicle according to one of claims 1 or 2, characterized in that the cable lug (2) has a sleeve-shaped conductor receptacle (4) closed on one side, into which the conductor (3) is inserted and to which the conductor (3) is welded. Schienenfahrzeug nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Leiter (3) an einem in die Leiteraufnahme (4) des Kabelschuhs (2) eingeführten Ende, insbesondere durch mechanische Umformung, an die Innenkontur der Leiteraufnahme (4) angepasst ist.Rail vehicle according to one of claims 1 to 3, characterized in that the conductor (3) is adapted to a in the conductor receptacle (4) of the cable lug (2) inserted end, in particular by mechanical deformation, to the inner contour of the conductor receptacle (4). Schienenfahrzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie eine Öse (6) aufweist, welche in einem Winkel größer 30° und kleiner 60° zu einer Längsachse der Leiteraufnahme (4) geneigt ist.Rail vehicle according to one of claims 1 to 4, characterized in that it comprises an eyelet (6) which is inclined at an angle greater than 30 ° and less than 60 ° to a longitudinal axis of the conductor receptacle (4). Schienenfahrzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie eine Öse (6) und eine Basis (5) aufweist, welche Basis (5) eine Stirnseite der Leiteraufnahme (4) bildet, wobei sich die Erdungslasche (1) von der Basis (4) bis zur Öse (6) verjüngt.Rail vehicle according to one of claims 1 to 5, characterized in that it comprises an eyelet (6) and a base (5), which base (5) forms an end face of the conductor receptacle (4), wherein the grounding tab (1) of the Base (4) to the eyelet (6) tapers. Schienenfahrzeug nach einem der Ansprüche 1 bis 6 und einem mit der Erdungslasche (1) verbundenen, weiteren Kabelschuh, dadurch gekennzeichnet, dass der weitere Kabelschuh eine Öse und eine im Bereich der Öse im Wesentlichen konstante Dicke aufweist, und dass der weitere Kabelschuh eine Verdickung in einem Bereich einer Leiteraufnahme aufweist, und dass die Erdungslasche (1) eine Öse (6) und im Bereich der Öse (6) eine im Wesentlichen konstante Dicke aufweist, und sich in einem Winkelbereich von zumindest 120° um einen Mittelpunkt der Öse (6) höchstens in einem Maß um den Mittelpunkt ausdehnt, welches kleiner ist als ein Abstand von einem Mittelpunkt der Öse des weiteren Kabelschuhs zu der Verdickung des weiteren Kabelschuhs (2).Rail vehicle according to one of Claims 1 to 6 and a further cable lug connected to the grounding lug (1), characterized in that the further cable lug has an eyelet and a substantially constant thickness in the region of the eyelet, and in that the further cable lug has a thickening in a region of a conductor receptacle, and that the grounding tab (1) has an eyelet (6) and in the region of the eyelet (6) has a substantially constant thickness, and in an angular range of at least 120 ° about a center of the eyelet (6) at the most to a degree about the center expands, which is smaller than a distance from a center of the eye of the further cable lug to the thickening of the further cable lug (2).
EP17002072.1A 2012-09-05 2013-09-03 Rail vehicle with grounding flaps Withdrawn EP3330153A1 (en)

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DE102012215720.4A DE102012215720A1 (en) 2012-09-05 2012-09-05 ground strap
EP13182781.8A EP2705996A3 (en) 2012-09-05 2013-09-03 Grounding tab

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AT518144B1 (en) * 2015-12-16 2019-04-15 Siemens Ag Oesterreich Rail vehicle car box with a ground connection
DE102016218862B3 (en) 2016-09-29 2018-03-29 Siemens Aktiengesellschaft Stud-welded grounding tab
CN107123867B (en) * 2017-06-05 2019-05-10 吉林省中赢高科技有限公司 A kind of connector and its magnetic induction welding method of copper tip and aluminum conductor
DE102017212558A1 (en) * 2017-07-21 2019-01-24 Siemens Aktiengesellschaft Grounding device for vehicles
DE102018220737A1 (en) * 2018-11-30 2020-01-02 Siemens Mobility GmbH Grounding strap, method of making an grounding strap and rail vehicle

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