EP4313719A1 - Automatische mittelpufferkupplung für schienenfahrzeuge sowie hieraus zusammengesetzte kupplungsanordnung - Google Patents
Automatische mittelpufferkupplung für schienenfahrzeuge sowie hieraus zusammengesetzte kupplungsanordnungInfo
- Publication number
- EP4313719A1 EP4313719A1 EP22712579.6A EP22712579A EP4313719A1 EP 4313719 A1 EP4313719 A1 EP 4313719A1 EP 22712579 A EP22712579 A EP 22712579A EP 4313719 A1 EP4313719 A1 EP 4313719A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling
- bolt
- central buffer
- eyelet
- designed
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
- B61G7/14—Safety devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G3/00—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements
- B61G3/16—Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling heads rigidly connected by rotatable hook plates or discs and balancing links, the coupling members forming a parallelogram, e.g. "Scharfenberg" type
Definitions
- the present invention relates to an automatic central buffer coupling for rail vehicles with a coupling head of the Scharfenberg type with a coupling head housing and coupling locking means arranged therein, comprising a main pin, a coupling eyelet, a coupling eyelet bolt and a frog. Furthermore, the invention also relates to a coupling arrangement, consisting of two interconnected central buffer couplings of the aforementioned type.
- the field of application of the invention extends to rail vehicle technology.
- the central buffer couplings of interest here are used to couple individual wagons or partial trains together. They are arranged in the area of the longitudinal axis of the wagon and represent a combination of buffer and coupling. More specifically, the present invention relates to a technical improvement of a central buffer coupling of the Scharfenberg type.
- the coupling heads connected to one another form a rigid connection in order to enable electrical and/or pneumatic connections to be coupled together.
- the couplings are usually fastened in the vehicle underframe and are pivoted vertically and horizontally via their articulation. With this arrangement, compressive forces are transmitted via the coupling head housings that come into contact with one another, whereas the tensile forces are also transmitted via the coupling closure means located on the inside.
- CH 39226 shows a generic center buffer coupling in the Scharfenberg design.
- Each of the coupling head housings of a coupling arrangement with two central buffer couplings that correspond to one another is equipped with a cone and a funnel provided, which are joined together when coupling with the complementary parts of the counter-coupling and thereby lead to an alignment of both coupling heads to each other.
- a coupling eyelet protrudes from an opening in the cone, which dips into the funnel of the counter-coupling with the cone during the coupling process.
- a main bolt is fastened in the coupling head housing, on which a hook disk - the so-called frog - is arranged so that it can rotate.
- the frog carries a coupling eyelet bolt around which the coupling eyelet rotates.
- the frog In the frog there is a hook mouth in the form of an open long hole.
- the central axis of its rounded surface is offset by 180° on the same radius as the coupling eye bolt relative to the main bolt. This is necessary because with different radii of the coupling eye bolt and hook mouth, the frogs connected by the coupling eyes would block each other and no movement would be possible.
- the angular movement of the coupling eye bolt of one frog must be matched by the same angular movement of the other frog.
- one or more tension springs pull the frog into a coupled position against a stop surface on the coupling head housing. When coupling, the coupling eye engages in the hook mouth of the counter-coupling.
- the opening in the cone of the coupling housing is provided with limiting surfaces within which the coupling eyelet can move.
- the coupling closure means form a parallelogram of forces, within which the tensile forces are distributed evenly over the two closure cords. The balance of forces prevents unintentional opening of the locked coupling closure means. While the compressive forces are transmitted via the flat end faces of the coupling head housing, the tensile forces run via the aforesaid parallelogram of forces of the coupling locking means. According to the standard, the coupling head must be designed for a tensile force of 1,000 kN and a compressive force of 1,500 kN, which applies to normal operating conditions.
- the invention includes the technical teaching that for the safety release of a coupling connection when an overloading response force FA is exceeded in the pulling direction, the coupling eyebolt of the coupling locking means is designed as a shear bolt.
- the measure according to the invention is thus aimed at specifying and modifying a specific component of the coupling locking means involved in the flow of clutch force, here the coupling eyebolt.
- the other components, in particular the main bolt, the coupling eyelet, the frog and the coupling head housing can remain unchanged.
- the solution according to the invention is therefore also suitable for retrofitting existing coupling heads of the Scharfenberg type.
- the solution according to the invention is based on the fact that the load paths for compressive and tensile forces in the area of the coupling head are different.
- the coupling locking means essentially consisting of the main pin, coupling eyelet, coupling eyelet bolt and frog, transmit the tensile forces in a sequence appropriate to the flow of force, with the coupling eyelet bolt alone being equipped with at least one predetermined breaking point.
- the coupling eyebolt can fail in a controlled manner from a critical shear load corresponding to an associated response force FA, as a result of which the coupling connection is released. Due to the specific design as a shear bolt, the response force FA can be dimensioned relatively precisely, so that reliable function is guaranteed.
- the coupling eyebolt running between a fork-shaped coupling eyelet at the end and a part of the frog engaging therein is provided with at least one circumferential notch as a predetermined breaking point.
- the shear bolt according to the invention is formed by this external predetermined breaking point.
- the at least one peripheral notch preferably has an acute-angled notch cross-section, which can be produced in a simple manner by cutting a prefabricated metal bolt.
- the notched cross-section can also be provided with radii.
- the at least one circumferential notch preferably runs over the entire circumferential circle of the coupling eyebolt for production reasons. However, it is also conceivable to introduce only a sectional notch as a predetermined breaking point.
- the coupling eye bolt is provided with exactly two peripheral notches, which are arranged at an axial distance from one another that corresponds to the corresponding border area between the frog and the fork-shaped coupling eye.
- two predetermined breaking points are created at the point where the shearing force is applied, which allow a particularly defined component failure, since the circumferential notches run in the shearing planes between the coupling eyelet and frog.
- the coupling eyebolt is preferably designed in the manner of a round bolt, which is secured in the assembly position on the distal end with a snap ring. This allows for easy assembly and disassembly in a functional position.
- the coupling eye bolt designed as a shear bolt has at least one internal lubrication channel running through it, which conducts lubricating oil or lubricating grease from the front side of the coupling eye bolt to the outer lateral surface for lubricating the articulated connection between the coupling eye and frog. Because the lubricating channels run on the inside and do not affect the position and formation of the elm catch notches, the shearing function can be combined with the lubricating function without mutual impairment.
- the two central buffer couplings described above can be combined to form a coupling arrangement, with the associated coupling eye bolts interacting within the framework of the parallelogram lock in such a way that the coupling arrangement is released when a response force FA is exceeded in the pulling direction, which, depending on the application and design of the coupling, ranges from 200 to 2,000 kN, preferably 1,500 kN + 15%. Because the solution according to the invention can be dimensioned both for low tensile forces and for very high tensile forces.
- Both coupling heads of a coupling arrangement are preferably each equipped with a coupling eyelet bolt designed as a shear bolt. If a response force FA of 1,500 kN is to be achieved, this corresponds to a response force of 750 kN for each bolt, given an even distribution of the loads in the parallelogram of forces.
- FIG. 3 shows a longitudinal section through the coupling closure means in the area of the coupling eyebolt.
- a coupling head 1 of an automatic central buffer coupling designed according to the Scharfenberg design for a rail vehicle essentially consists of a funnel 2 on the front side for receiving a cone 6 of the corresponding coupling head (not shown here), which is attached to a coupling head housing 9 are trained.
- the coupling head housing 9 accommodates mechanical coupling locking means, comprising a main bolt 3 for pivoting a frog 4 with a hook mouth on the funnel side.
- a coupling eyelet 5 is articulated on the frog 4 by means of coupling eyelet bolts 8, the distal end of which is arranged in the area of the cone 6 to form a tie rod.
- the frog 4 is turned into a coupled position by one or more tension springs 7 and by the cone of a coupling that dips into the funnel of a counter-coupling the respective release mechanism of the exemplary 2-position lock is pressed.
- the coupling closure means comprise a spring bearing 10 as a release mechanism, which acts on a release plunger 11 with a ratchet rod extending therefrom.
- This release mechanism is used in designs with a 2-position lock design to release the coupling lock from its pretensioned position ready for coupling, so that it can rotate into the coupled position using the force of the tension springs.
- FIG. 2 shows two of the coupling heads 1 and G described above, each with corresponding coupling closure means lying on the inside to form a coupled coupling arrangement.
- Both coupling eye bolts 8 and 8' are designed as shear bolts.
- the coupling eye bolt 8 running between a fork-shaped coupling eyelet 5 and the part of the frog 4 that engages therein is provided with two circumferential notches 12a and 12b arranged at an axial distance from one another, which give the coupling eyelet bolt 8 the property of a shearing bolt in order to Exceeding a response force FA that can be determined via the dimensioning of the interacting components in the direction of pull to bring about a safety release of the coupling connection.
- the coupling eye bolt 8 is designed in the manner of a collar bolt and is secured in the mounting position on the distal end with a snap ring 13 .
- the coupling eyelet pin 8 in this embodiment is traversed by an internal lubrication channel 14, from which at least a transverse section branches off in order to lubricate the articulated connection between the coupling eyelet 5 and frog 4, for example via a front-end grease nipple.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021107936.5A DE102021107936A1 (de) | 2021-03-30 | 2021-03-30 | Automatische Mittelpufferkupplung für Schienenfahrzeuge sowie hieraus zusammengesetzte Kupplungsanordnung |
| PCT/EP2022/056264 WO2022207274A1 (de) | 2021-03-30 | 2022-03-10 | Automatische mittelpufferkupplung für schienenfahrzeuge sowie hieraus zusammengesetzte kupplungsanordnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4313719A1 true EP4313719A1 (de) | 2024-02-07 |
| EP4313719B1 EP4313719B1 (de) | 2025-01-15 |
Family
ID=80937307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22712579.6A Active EP4313719B1 (de) | 2021-03-30 | 2022-03-10 | Automatische mittelpufferkupplung für schienenfahrzeuge sowie hieraus zusammengesetzte kupplungsanordnung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4313719B1 (de) |
| DE (1) | DE102021107936A1 (de) |
| FI (1) | FI4313719T3 (de) |
| PL (1) | PL4313719T3 (de) |
| WO (1) | WO2022207274A1 (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023120894A1 (de) | 2023-08-07 | 2025-02-13 | Voith Patent Gmbh | Automatische Zugkupplung, insbesondere Mittelpufferkupplung, eine Kupplungsanordnung sowie ein Verfahren zum Auslösen einer Notbremsung |
| DE102023131224A1 (de) * | 2023-11-10 | 2025-05-15 | Voith Patent Gmbh | Automatische Zugkupplung |
| SE547463C2 (en) | 2024-02-26 | 2025-09-30 | Dellner Couplers Ab | Freight Coupler and Rail Vehicle |
| CH722114A2 (de) * | 2024-09-09 | 2026-03-31 | Faiveley Transp Schwab Ag | Kupplung für ein Schienenfahrzeug mit einem Kupplungs- und Verriegelungsmechanismus |
| DE102024126939A1 (de) | 2024-09-19 | 2026-03-19 | Voith Patent Gmbh | Kupplungsanordnung und Luftkupplung für eine Kupplungsanordnung |
| DE102025135544A1 (de) | 2024-09-19 | 2026-03-19 | Voith Patent Gmbh | Kupplungsanordnung und Verfahren zur Einleitung einer Notbremsung |
| DE102024127020A1 (de) | 2024-09-19 | 2026-03-19 | Voith Patent Gmbh | Kupplungsanordnung |
| EP4737261A1 (de) | 2024-11-02 | 2026-05-06 | Voith Patent GmbH | Kupplungsanordnung |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH39226A (de) | 1907-03-06 | 1908-02-17 | Karl Scharfenberg | Mittelpufferkupplung mit im Kuppelkopf wagrecht drehbarem und für das Gegenfahrzeug mit Kuppelbügel versehenem Kuppelblock |
| US6499613B1 (en) * | 1999-12-30 | 2002-12-31 | Westinghouse Air Brake Company | Coupler with extended emergency release and towing feature |
| SE534926C2 (sv) * | 2010-06-23 | 2012-02-21 | Ego Int Bv | Energiupptagande koppelhuvud för en draginrättning |
| CN102343918B (zh) * | 2011-07-12 | 2016-08-17 | 中车青岛四方车辆研究所有限公司 | 用于轨道车辆的内拉断式缓冲装置 |
| DE102015005981A1 (de) | 2015-05-08 | 2016-11-10 | Aissa Zouhri | Kupplungsvorrichtung |
| DE102016218054B4 (de) | 2016-09-21 | 2019-10-10 | HYDRO Holding KG | Schleppstange für Flugzeuge |
| DE102019101996A1 (de) | 2019-01-28 | 2020-07-30 | Voith Patent Gmbh | Zugkupplungshälfte und Verfahren zum Erfassen einer Drehposition des Hauptbolzens einer Zugkupplungshälfte |
| DE102019114237A1 (de) | 2019-05-28 | 2020-12-03 | Voith Patent Gmbh | Zugkupplung |
-
2021
- 2021-03-30 DE DE102021107936.5A patent/DE102021107936A1/de active Pending
-
2022
- 2022-03-10 FI FIEP22712579.6T patent/FI4313719T3/fi active
- 2022-03-10 PL PL22712579.6T patent/PL4313719T3/pl unknown
- 2022-03-10 EP EP22712579.6A patent/EP4313719B1/de active Active
- 2022-03-10 WO PCT/EP2022/056264 patent/WO2022207274A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022207274A1 (de) | 2022-10-06 |
| DE102021107936A1 (de) | 2022-10-06 |
| PL4313719T3 (pl) | 2025-04-14 |
| EP4313719B1 (de) | 2025-01-15 |
| FI4313719T3 (fi) | 2025-03-21 |
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