EP1982892B1 - Device for storing a coupling arm - Google Patents

Abstract

The central bolt (13) exceeding from the front of the coupling arm (3) is supported against lateral and vertical forces by a carrier (2). An elastic element (6) is positioned between a pressure plate (4) located at the coupling arm (3) and a contact plate (5) at the carrier (2). The elastic element (6) is of a circular shape and thicker in the center (6i) in order to facilitate the adjusting motion between the parts when the carriage is pulled along curved or slightly irregular rails. An independent claim is given for the use of at least one of the units for joining two carriages of a train.

Description

Technical area

• gegen Druck- und Zugbelastung sowie
• gegen horizontale und vertikale Querkräfte,

abstützt, wobei eine am Kupplungsarm angeordnete Druckplatte über mindestens ein elastisches Element gegenüber einer Anlageplatte des Trägers abgestützt ist.The present invention relates to a central buffer coupling with a device for the elastic articulated mounting of a coupling arm of a central buffer coupling on a rail vehicle, wherein a support forming the extension of the coupling arm hinge or central bolt against forces acting in the horizontal plane and / or in the vertical plane forces, in particular

• against pressure and tensile load as well
• against horizontal and vertical shear forces,

supported, wherein a coupling plate arranged on the pressure plate is supported via at least one elastic element against a bearing plate of the carrier.

State of the art

As a matter of principle, it should be stated in the prior art that central buffer couplings are combined buffers and couplings which are mounted centrally on railway vehicles. Modern automatic central buffer clutches can be remotely released or coupled by the driver, while the connection of the brake lines and the electrical lines is made simultaneously. Central buffer couplings are being used more and more often on trainsets, especially for the connection of rarely separate train compositions.

An essential part of conventional central buffer couplings is a stabilizing joint with a flat pressure surface at the end of the coupling arm. With side and / or height offsets between the carriages, the pressure point emanates from the center so that the desired stabilizing effect is achieved. Decisive for the development of the stabilization joint is primarily the stabilizing effect in the horizontal plane. In unfavorable track curves and in relation to wheelbase / overhang unfavorable conditions arise - especially in two-axle vehicles - with longitudinal compressive force between the vehicles outward force components that can lead to derailment in extreme cases. The use of a stabilization joint in this level significantly improves the transmission of forces as well as the danger of derailment.

In the vertical plane, on the other hand, the effect of a stabilization joint is felt when a lighter vehicle is subjected to longitudinal compression force than a more heavily loaded vehicle. Here, the resulting compressive force is deflected by the use of a stabilizing joint so that the easy risk of derailment light car is pushed down.

The basic form of such, provided for connecting individual cars mehrgliedriger rail vehicles hinge device is, for example, by the document DD 90 334 represented from the prior art.

In such a hinge device, as similar to the document EP 1 086 870 A2 can be seen from the prior art, there is a support of the coupling arm relative to the carrier via a spherical surface; For example, the document discloses EP 1 086 870 A2 a train-pressure coupling rod device for rail vehicles with all-round directional joint effect, comprising a support bearing for rigid connection with the undercarriage of the rail vehicle, spring elements for generating a spring travel and a damping and ball joint-like bearing parts for realizing a positive tilting movement of the coupling rod ends between support bearings and coupling rods.

In order to achieve a restoring effect with slightly larger vertical and / or horizontal deflection movements, is already in the document EP 1 407 953 A1 proposed from the prior art, to use damping elements which are surrounded by a support cage, at the outer edges of which are support and tilting points which have a distance to the respective contact surface, that at vertical and / or horizontal deflection after a certain angle a limitation or provision is made.

However, this embodiment is based on the fact that at the contact surfaces between the steel edges of the support cage and the pressure plate results in a metallic contact; However, especially with larger vertical and / or horizontal deflection movements, such a metallic contact leads to a frequently unwanted noise, which affects both the travel pleasure of passengers transported in the rail vehicle and - especially at night - the need for rest of living and / or working in the vicinity of railway lines People counteracts.

The DE-U1-200 09 859 describes a device of the type mentioned. At an open end of the central bolt, an end plate is attached. The abutment plate is a central plate, which is connected to a bearing, so that a pivoting movement of the central plate about a vertical axis is possible. By a conical course of an opening in the central plate is achieved that the central bolt can assume a skewed position within certain limits relative to the intermediate plate. This can be compensated in combination with the bearing relative movements when cornering. On the central bolt annular rubber elastic elements are arranged. There are two such elements between the pressure plate and the intermediate plate and an element between the intermediate plate and the end plate. For tensile loads or compressive loads, the elastic elements are compressed with their entire volume. In tension or compression different elastic elements are claimed, so that a targeted vote is possible. The elastic elements lie with their inner support sections flush with the central bolt. On the outside, the elastic elements are arched. The outer sections are free.

Comparable constructions show and describe the WO 2005/075272 A and EP 1 785 329 A1 ,

Presentation of the present invention: object, solution, advantages

Based on the disadvantages and inadequacies set out above and in appreciation of the outlined prior art, the present invention has the object, a middle buffer coupling with a device of the type mentioned in such a way that at a central buffer coupling a direct metallic contact, especially steel on steel, is avoided and at a certain deflection angle uses an elastic suspension.

This object is achieved by a central buffer coupling with a device having the features specified in claim 1. Advantageous embodiments and expedient developments of the present invention are characterized in the respective subclaims.

• gegen Druck- und Zugbelastung sowie
• gegen horizontale und vertikale Querkräfte

abstützt.The present invention is basically based on a pad linkage with stabilization, that is, that the coupling arm of a central buffer coupling is elastically and / or hinged, wherein a support an extension of the coupling arm forming central pivot pin against deflections in the horizontal plane and / or forces acting in the vertical plane, for example

• against pressure and tensile load as well
• against horizontal and vertical shear forces

supported.

In order to avoid direct metallic contact, in particular steel on steel, and to use an elastic suspension at a certain angle of horizontal deflection and / or vertical deflection, at least one elastic element is provided, which is arranged on the coupling arm pressure plate with respect to a Support plate of the support is supported.

According to the invention, the elastic element has an inner support portion and a narrower than the inner support portion formed, surrounding the inner support portion, outer support portion.

• in Bezug auf die Symmetrieachse des Kupplungsarms im Wesentlichen rotationssymmetrisch ausgebildet sein und/oder
• im Wesentlichen konzentrisch zur Symmetrieachse des Kupplungsarms angeordnet sein.
  Wenn in vorteilhaften, miteinander kombinierbaren oder voneinander unabhängigen Ausführungen der vorliegenden Erfindung
• die Druckplatte mindestens einen an den umlaufenden äußeren Stützabschnitt, insbesondere an den der Druckplatte zugewandten Teil des umlaufenden äußeren Stützabschnitts, anlegbaren umlaufenden Abstützabschnitt aufweist und/oder
• die Anlageplatte mindestens einen an den umlaufenden äußeren Stützabschnitt,

In order to ensure a homogeneous damping and restoring action of the elastic element in any direction of horizontal and / or vertical deflection, the elastic element may be made according to combinable or mutually independent advantageous embodiments of the present invention

• be substantially rotationally symmetrical with respect to the symmetry axis of the coupling arm and / or
• be arranged substantially concentric with the axis of symmetry of the coupling arm.
  When in advantageous, combinable or independent embodiments of the present invention
• the pressure plate has at least one circumferential support section which can be applied to the peripheral outer support section, in particular to the part of the peripheral outer support section facing the pressure plate, and / or
• the abutment plate at least one of the circumferential outer support section,

In particular, on the abutment plate facing part of the peripheral outer support portion, has deployable circumferential support portion, so this narrower outer portion of the elastic element in an appropriate embodiment of the present invention so cooperate with the corresponding configuration of the pressure plate and / or the contact plate that initially a relatively free Deflection and / or a relatively free pivoting is achieved.

Upon contact of the elastic member (the elastic portion) with the support elements of the pressure plate and / or the abutment plate, a restoring moment is then initially generated, which increasingly increases upon further deflection and / or further compression, because the spring travel of the narrower portion of the elastic element then severely limits the deflection or the pivoting.

The advantage of the construction set forth above is that not only relatively simple components can be used, but also a low-noise and space-saving stabilization of the central buffer joint is achieved.

The present invention ensures with its straight-line flow of forces and with its compact design, the full fulfillment of the task and contributes to the fact that even very lightweight cars in train u. a. Requirements with regard to running safety, in particular with regard to derailment safety.

Finally, the present invention relates to the use of at least one device according to the above-described kind for connecting single wagons of multi-unit rail vehicles, in particular railway goods wagon units or railcar units.

Brief description of the drawings

Fig. 1

in schematischer Längsschnittdarstellung ein Ausführungsbeispiel für eine Vorrichtung gemäß der vorliegenden Erfindung; und

Fig. 2

in schematischer Halblängsschnittdarstellung ein Ausführungsbeispiel für eine Vorrichtung gemäß der vorliegenden Erfindung.

As already discussed above, there are various possibilities for embodying and developing the teaching of the present invention in an advantageous manner. For this purpose, reference is made on the one hand to the claims subordinate to claim 1, on the other hand further embodiments, features and advantages of the present invention will be described below with reference to the two Fig. 1 or by Fig. 2 illustrated embodiments explained in more detail. In a purely perspective view:

Fig. 1

a schematic longitudinal sectional view of an embodiment of a device according to the present invention; and

Fig. 2

an embodiment of a device according to the present invention in a schematic half-longitudinal view.

Best way to carry out the present invention

• sowohl auf die in Fig. 1 dargestellte erste exemplarische Ausgestaltung einer Vorrichtung 100 gemäß der vorliegenden Erfindung
• als auch auf die in Fig. 2 dargestellte zweite exemplarische Ausgestaltung einer Vorrichtung 100' gemäß der vorliegenden Erfindung.

In order to avoid unnecessary repetition, the following explanations relate to the embodiments, features and advantages of the present invention (unless stated otherwise).

• both on the in Fig. 1 illustrated first exemplary embodiment of a device 100 according to the present invention
• as well as on in Fig. 2 illustrated second exemplary embodiment of a device 100 'according to the present invention.

The device 100 (cf. Fig. 1 ) or 100 '(see. Fig. 2 ) is used when connecting single cars multi-unit rail vehicles 1 used; Specifically, the device 100 or 100 'in this case for elastic articulated bearing a coupling arm 3 of a central buffer coupling on the rail vehicle 1, in particular on a railway freight wagon or on a railcar, determined.

• gegen Druck- und Zugbelastung sowie
• gegen horizontale und vertikale Querkräfte,

ab.A support 2 supports an extension of the coupling arm 3 forming joint or central pin 13 against deflection in the horizontal plane and / or in the vertical plane acting forces, in particular

• against pressure and tensile load as well
• against horizontal and vertical shear forces,

from.

In order to avoid an immediate metallic contact, especially steel on steel, and at a certain angle α (see. Fig. 1 ) to allow the horizontal deflection and / or the vertical deflection to use elastic cushioning, is arranged on the coupling arm 3 pressure plate 4 via an elastic element 6 (see. Fig. 1 ) or 6 '(cf. Fig. 2 ) supported against a bearing plate 5 of the carrier 2.

• in Bezug auf die Längsrichtung (Symmetrieachse S des Kupplungsarms 3) rotationssymmetrisch ausgebildet und
• konzentrisch zur Längsrichtung (Symmetrieachse S des Kupplungsarms 3) angeordnet.

This elastic element 6 (see. Fig. 1 ) or 6 '(cf. Fig. 2 )

• with respect to the longitudinal direction (symmetry axis S of the coupling arm 3) rotationally symmetrical and
• arranged concentrically to the longitudinal direction (symmetry axis S of the coupling arm 3).

As in particular the enlarged detail view in Fig. 1 is removable in the case of Fig. 1 illustrated first embodiment of the device 100, the elastic member 6 in the middle 6i relatively wide (thick) to achieve a longitudinal suspension, that is in the direction of the axis of symmetry S of the coupling arm 3 and to allow the pivoting by the angle α.

The narrower portion outside (= outer annular or circumferential portion 6a) is designed so that a contact takes place only after a certain pivoting, that is, only at larger deflection angles a. For this purpose, two special support sections 14 and 15 are provided on the pressure plate 4 and on the contact plate 5.

In the case of Fig. 2 illustrated second embodiment of the device 100 ', only one of the pressure plate 4 associated larger support portion 14' is provided, and the elastic member 6 'has so far an asymmetrical profile; as the inner support portion 6i 'surrounding outer support portion 6a' in its contact plate 5 end facing an annular peripheral recess 16 'has.

• bei kleinen Auslenkwinkeln α der Kupplungsarm 3 gegenüber dem Träger 2 relativ frei auslenkbar und relativ frei verschwenkbar ist und
• bei größeren Auslenkwinkeln α, insbesondere bei Kontakt des elastischen Elements 6 bzw. 6'
  • -- mit dem Abstützabschnitt 14 bzw. 14' der Druckplatte 4 (beide Ausführungsbeispiele 100 und 100') und
  • -- mit dem Abstützabschnitt 15 der Anlageplatte 5 (nicht zweites Ausführungsbeispiel 100')
  ein Rückstellmoment entsteht, das sich bei noch größeren Auslenkwinkeln α oder bei Zusammendrücken von Träger 2 und Kupplungsarm 3 zunehmend verstärkt.

Common to both embodiments of the device 100 or 100 ', that the outer support portion 6a and 6a' so together with the pressure plate 4 and / or with the contact plate 5, that

• at small deflection angles α of the coupling arm 3 relative to the carrier 2 relative is freely deflectable and relatively freely swiveling and
• at larger deflection angles α, in particular when the elastic element 6 or 6 'contacts
  • - With the support portion 14 and 14 'of the pressure plate 4 (both embodiments 100 and 100') and
  • with the support section 15 of the abutment plate 5 (not second exemplary embodiment 100 ')
  a restoring torque arises, which is increasingly reinforced at even greater deflection angles α or when compressing the carrier 2 and the coupling arm 3.

LIST OF REFERENCE NUMBERS

100

Device (= first embodiment; Fig. 1 )

100 '

Device (= second embodiment; Fig. 2 )

1

Railway vehicle, in particular railway goods wagon unit or railcar unit

2

carrier

3

coupling arm

13

Joint bolt or central bolt of the coupling arm 3

4

printing plate

14

Supporting section of the pressure plate 4

5

bearing plate

15

Supporting section of the contact plate 5

6

elastic element or elastic section (= first embodiment; Fig. 1 )

6a

outer support portion of the elastic member 6 (= first embodiment; Fig. 1 )

6i

inner support portion of the elastic member 6 (= first embodiment; Fig. 1 )

6 '

elastic element (= second embodiment; Fig. 2 )

6a '

outer support portion of the elastic member 6 '(= second embodiment; Fig. 2 )

16 '

Recess of the outer support portion 6a '(= second embodiment; Fig. 2 )

6i '

inner support portion of the elastic member 6 '(= second embodiment; Fig. 2 )

α

angle of deflection

S

Longitudinal direction or symmetry axis of the coupling arm. 3

Claims (9)

1. Centre buffer having a coupling device (100; 100') for supporting a coupling arm (3) in an elastic, articulated fashion on a rail vehicle (1), wherein a carrier (2) supports a joint bolt or central bolt (13), forming the extension of the coupling arm (3), against forces acting in the event of deflection in the horizontal plane and/or the vertical plane, in particular

   - against compressive loading and tensile loading, and

   - against horizontal and vertical transverse forces, wherein a pressure plate (4) which is arranged on the coupling arm (3) is supported with respect to a bearing plate (5) of the carrier (2) by means of at least one elastic element (6; 6'),

   characterized
   in that the elastic element (6; 6') has

   - an inner support section (6i, 6i') and

   - an outer support section (6a; 6a') which is made narrower compared to the inner support section (6i; 6i') and surrounds the inner support section (bi; bi').
2. Centre buffer coupling having a device according to Claim 1, characterized in that the elastic element (6; 6') is of essentially rotationally symmetrical design with respect to the axis of symmetry (S) of the coupling arm (3).
3. Centre buffer coupling having a device according to Claim 1 or 2, characterized in that the elastic element (6; 6') is arranged essentially concentrically with respect to the axis of symmetry (S) of the coupling arm (3).
4. Centre buffer coupling having a device according to Claim 1, characterized in that the pressure plate (4) has at least one circumferential support section (14; 14') which can be made to abut against the circumferential outer support section (6a; 6a'), in particular against the part of the circumferential outer support section (6a; 6a') facing the pressure plate (4).
5. Centre buffer coupling having a device according to at least one of the preceding claims, characterized in that the bearing plate (5) has at least one circumferential support section (15) which can be made to abut against the circumferential outer support section (6a; 6a'), in particular against the part of the circumferential outer support section (6a; 6a') facing the bearing plate (5).
6. Centre buffer coupling having a device according to at least one of the preceding claims, characterized in that the outer support section (6a; 6a') interacts with the pressure plate (4) and/or with the bearing plate (5) in such a way that

   - at small deflection angles (a) the coupling arm (3) can be deflected relatively freely and/or pivoted relatively freely with respect to the carrier (2), and

   - at relatively large deflection angles (α), in particular when there is contact between the elastic element (6, 6')

   - and the support section (14; 14') of the pressure plate (4) and/or

   - and the support section (15) of the bearing plate (5),

   a restoring torque is produced which becomes increasingly strong at even larger deflection angles (α) and/or when the carrier (2) and coupling arm (3) are pressed together.
7. Centre buffer coupling having a device according to at least one of Claims 1 to 6, characterized in that the elastic element (6') has an asymmetrical profile.
8. Centre buffer coupling having a device according to at least one of Claims 1 to 7, characterized in that the outer support section (6a') which surrounds the inner support section (6i') has a recess (16') which runs around in an annular shape in the end region of said outer support section (6a') facing the bearing plate (5).
9. Use of a centre buffer coupling having at least one device (100; 100') according to at least one of Claims 1 to 8 for connecting individual wagons of multi-component rail vehicles (1), in particular railway goods wagon units or rail car units.

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