EP4558374A1 - Schienenfahrzeug mit erhöhter seitenwindstabilität - Google Patents
Schienenfahrzeug mit erhöhter seitenwindstabilitätInfo
- Publication number
- EP4558374A1 EP4558374A1 EP23745082.0A EP23745082A EP4558374A1 EP 4558374 A1 EP4558374 A1 EP 4558374A1 EP 23745082 A EP23745082 A EP 23745082A EP 4558374 A1 EP4558374 A1 EP 4558374A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- bogie
- leading
- rail vehicle
- trailing
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/22—Guiding of the vehicle underframes with respect to the bogies
- B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F3/00—Types of bogies
- B61F3/14—Types of bogies specially modified for reducing air resistance
Definitions
- the invention relates to a rail vehicle according to the preamble f f of claim 1.
- a rail vehicle for which a direction of travel is specified and that a leading bogie at a front end of the rail vehicle in the direction of travel has a trailing bogie at the end of the rail vehicle opposite the direction of travel, the leading bogie and the trailing bogie each having a Roll supports are equipped.
- High-speed trains in particular are characterized by long car bodies that are aerodynamically optimized in terms of their driving resistance and are particularly lightweight.
- the aerodynamic properties in combination with the lightweight construction lead to great sensitivity to crosswinds, particularly in end cars.
- the invention is based on the object of further developing a rail vehicle of the type mentioned above, which is used in particular as the leading end car of a multi-part train, in such a way that increased stability is achieved when the rail vehicle is subjected to crosswinds.
- the rail vehicle described at the beginning is characterized in that the roll stiffness of the roll supports of the leading bogie and the trailing bogie are selected so differently that when the rail vehicle is subjected to crosswinds, unequal wheel relief on the leading and trailing bogies is counteracted.
- the technical measures of claim 1 are based on the knowledge that exposing the rail vehicle to crosswinds leads to different levels of wheel relief on the front and rear bogies.
- the design of the roll supports of the leading and trailing bogie ensures that the wheel reliefs mentioned differ less from one another than if both bogies were designed with the same roll stiffness.
- the anti-roll supports of the leading and trailing bogie are designed asymmetrically, i.e. H . They have different roll stiffnesses, which keep differences in the wheel relief of the leading and trailing bogies to a minimum.
- the roll stiffness of the roll supports of the leading and trailing bogie are preferably selected such that when the rail vehicle is subjected to crosswinds, wheel relief on the leading and trailing bogie is minimal. In this way, the effects of exposure of the rail vehicle to crosswinds on the driving characteristics of the rail vehicle are minimized.
- the leading bogie and the trailing bogie can in particular be designed as internally mounted bogies.
- the ratio of the roll stiffness of the roll supports of the leading and trailing bogie depends on how much the wheel relief between the front and rear bogie in the event of lateral incidence z.
- B. a gust of wind is unequal.
- a greater redistribution is required than e.g. B. at 90% relative wheel relief at the front and 85% relative wheel relief at the rear.
- the redistribution also depends on the aerodynamic properties (aerodynamic yaw or pitching moment and the position of the center of gravity of the rail vehicle in the longitudinal direction.
- the unequal distribution of the wheel relief between the leading and trailing bogie is relatively constant over the speed of the rail vehicle, so that with the help of the different Roll stiffness redistribution between the leading and trailing bogie works across the entire speed range of the vehicle. In practice, it will be optimized to the speed at which the rail vehicle, especially used as the leading end car of a train, is most critical in terms of crosswinds.
- the roll stiffness of the roll support of the leading bogie is preferably lower than the roll stiffness of the roll support of the trailing bogie. This measure is based on the knowledge that the leading bogie is more critical than the trailing bogie in terms of its wheel relief from crosswinds. In particular, it can be observed that a critical mean wheel relief of 90% is achieved on the leading bogie at significantly lower wind speeds than on the trailing bogie. The reasons for this finding will be discussed in more detail later.
- the roll supports with different roll stiffness can in principle be either primary roll supports (arranged between wheel sets and bogie frames) or secondary roll supports.
- the roll supports of the leading and trailing bogies are preferably each designed as secondary roll supports, which are located between a car body of the Rail vehicle and a respective bogie, in particular its bogie frame, arranged are not.
- secondary roll supports are preferred, since if the primary roll supports of both wheel sets on a two-axle bogie were to be stiffened, the twisting of the wheel sets relative to one another would be made more difficult, which can have a negative effect on the driving characteristics of the rail vehicle. This negative effect that results from the stiffening of anti-roll supports does not occur in the same way with secondary anti-roll supports.
- the different roll stiffnesses of the roll supports of the leading or trailing bogie can be realized by using torsion bars with different torsional stiffness in the roll supports of the leading and trailing bogie.
- the different roll stiffness of the roll supports of the leading and trailing bogie can also be realized by using levers of different lengths between the torsion bar and the bogie frame in the roll supports.
- a total roll stiffness of the roll supports of the leading and trailing bogie corresponds to a total roll stiffness of the leading and trailing bogie of identical roll stiffness, taking into account the impact of crosswind on the rail vehicle.
- This has the advantage that a tilt coefficient (roll angle of the car body of the rail vehicle relative to the wheelsets in relation to the roll angle of the wheelsets; defined in EN 14363) of the rail vehicle compared to a rail vehicle that is not improved in terms of its side wall stability in the manner described here is, remains unchanged.
- the required overall roll stiffness is derived from the clearance profile to be maintained.
- Figure 1 is a perspective view of a car body of a rail vehicle
- Figure 2 is a perspective view of a leading bogie of the rail vehicle according to Figure 1,
- Figure 3 is a perspective view of a trailing bogie of the rail vehicle from Figure 1,
- Figure 4 is a side view of the leading bogie of the rail vehicle according to Figure 1,
- Figure 5 is a view from above of the bogie according to Figure
- Figure 6 is a perspective view of part of a roll support of one of the bogies of the rail vehicle according to Figure 1 and
- Figure 7 is a perspective view of a handlebar of the roll support from Figure 6.
- 1 shows, as an example of a rail vehicle with improved crosswind stability, a leading/leading end car of a multi-part train, with a car body 1, a leading bogie 2 and a trailing bogie 3, both bogies being designed as internally mounted bogies.
- 1 also shows the forces and moments acting on the car body 1, which are generated when the car body 1 is subjected to a crosswind, for example a gust of wind falling from the side.
- a lateral force FW, y acts at a height on the upper edge of the rail and thus causes a torque with respect to the wheel positions of the bogies 2, 3.
- the gust of wind also creates a rolling moment MW, x (rotation around the longitudinal axis of the vehicle). This rolling moment MW, x relieves the load on the windward wheels of the bogies 2, 3.
- a direction of travel of the rail vehicle is illustrated by an arrow R.
- a vertical force FW, z resulting from the application of crosswind causes the car body 1 to be lifted and, associated with this, an additional relief of the load on all the wheels of the bogies 2, 3.
- the wind attacking the side of the car body 1 also causes a significant moment MW, z about the vertical axis of the car body 1.
- This yaw moment MW, z, which acts on the car body 1, must be balanced by, compare Figures 2 and 3, a pair of forces FMz, h and FMz, v at a connection of the car body 1 to the bogies 2, 3.
- the bogies 2, 3 differ in their roll stiffness in order to achieve improved crosswind stability of the car body 1. This will be explained in more detail later.
- the bogies 2, 3 are each equipped with a roll support 4, 5.
- the roll support 4 of the leading bogie 2 differs in its rigidity from the roll support 5 of the trailing bogie 3 in that that it is lower than the roll stiffness of the roll support 5 of the trailing bogie 3.
- the anti-roll supports 4, 5 are so-called. secondary roll supports, which are articulated on the one hand on the car body 1 of the rail vehicle and on the other hand on a bogie frame 6 of the bogie 2.
- Figures 4 and 5 show, for example, the leading bogie 2, the roll support 4 of which basically functions in the same way as the roll support 5 of the trailing bogie 3.
- measures have only been taken to realize different roll stiffnesses of the anti-roll supports 4, 5, without the anti-roll supports 4, 5 differing in their basic structure.
- the roll support 4 has a torsion bar 7, the torsion bar 7 is rotatably mounted on the car body, with the help of two pivot bearings 8, which are attached to an underside of the car body 1.
- the torsion bar 7 is articulated to the bogie frame 6 via a bearing 11 on the bogie side via horizontal links 9 and vertical links 10.
- the torsion bar 7 rotates within the bearings 8 and no moment is built up. If a rolling movement occurs for the car body 1, d. H . However, a rotation of the car body 1 about its longitudinal axis results in uneven deflection on both sides of the car body 1. This causes the torsion bar 7 to twist and thus counteracts the rolling movement of the car body 1 that occurs.
- c T is a torsional rigidity of the torsion bar 7 and ⁇ p w is the roll angle of the car body 1. It is assumed that the car body 1 is torsionally rigid, so that the roll angle n w is the same on both bogies 2, 3.
- c T a torsional rigidity of the torsion bar 7
- ⁇ p w the roll angle of the car body 1. It is assumed that the car body 1 is torsionally rigid, so that the roll angle n w is the same on both bogies 2, 3.
- c T By modifying the torsional rigidity c T , different rolling moments can be achieved on the leading and trailing bogie. Due to a higher roll stiffness on the rear roll support 5 than on the front roll support 4, the rolling moment MW,x, compare FIG. 1, is supported more strongly on the trailing bogie 3.
- Wheel relief is redistributed from the leading bogie 2 to the trailing bogie 3, while the overall relief of all windward wheels of the bogies 2, 3 remains the same.
- the stiffness of the roll supports 4, 5 are adjusted so that wheel relief on the leading and trailing bogies is the same and both bogies 2, 3 are therefore used optimally with regard to increasing the crosswind stability of the car body 1.
- a required increase or decrease in the torsional rigidity for one of the torsion bars 7 can be achieved via an increased or reduced diameter of the torsion bar 7 in question.
- Shortening or lengthening the lever length 1 represents an effective method for modifying the roll stiffness of the roll supports 4 or 5, since the lever length 1 is squarely included in the roll stiffness.
- the interaction with the lifting of the car body 1 results in a further positive effect:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022207371.1A DE102022207371B4 (de) | 2022-07-19 | 2022-07-19 | Schienenfahrzeug mit erhöhter Seitenwindstabilität |
| PCT/EP2023/068564 WO2024017644A1 (de) | 2022-07-19 | 2023-07-05 | Schienenfahrzeug mit erhöhter seitenwindstabilität |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4558374A1 true EP4558374A1 (de) | 2025-05-28 |
Family
ID=87468444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23745082.0A Pending EP4558374A1 (de) | 2022-07-19 | 2023-07-05 | Schienenfahrzeug mit erhöhter seitenwindstabilität |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20260021834A1 (de) |
| EP (1) | EP4558374A1 (de) |
| DE (1) | DE102022207371B4 (de) |
| WO (1) | WO2024017644A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12479667B1 (en) | 2024-07-26 | 2025-11-25 | Anatoli Eduardovich Unitsky | Cargo transport complex |
| US12534300B1 (en) * | 2024-07-26 | 2026-01-27 | Anatoli Eduardovich Unitsky | Cargo transport complex |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH692695A5 (de) * | 1997-09-22 | 2002-09-30 | Fiat Sig Schienenfahrzeuge Ag | Schienenfahrzeug. |
| DE10316297A1 (de) * | 2003-04-08 | 2004-11-18 | Db Netz Ag | Abgestimmte Wankstützen und Torsionsmoment übertragende Kopplung zur Verbesserung der Seitenwindstabilität eines Fahrzeuges |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005041162A1 (de) | 2005-08-16 | 2007-02-22 | Bombardier Transportation Gmbh | Fahrzeug mit Wankstützen |
| DE102005041163A1 (de) | 2005-08-16 | 2007-02-22 | Bombardier Transportation Gmbh | Fahrzeug mit Wankstützen |
| DE102007008444A1 (de) | 2007-02-19 | 2008-08-28 | Bombardier Transportation Gmbh | Fahrzeug mit einer Wankstütze |
| ES2768258T3 (es) * | 2013-08-28 | 2020-06-22 | Bombardier Transp Gmbh | Vehículo que tiene compensación del efecto de viento lateral |
| CN114056368B (zh) * | 2021-12-15 | 2024-07-02 | 西南交通大学 | 一种用于高速列车的主动抗侧风系统及其方法 |
-
2022
- 2022-07-19 DE DE102022207371.1A patent/DE102022207371B4/de active Active
-
2023
- 2023-07-05 US US18/997,227 patent/US20260021834A1/en active Pending
- 2023-07-05 EP EP23745082.0A patent/EP4558374A1/de active Pending
- 2023-07-05 WO PCT/EP2023/068564 patent/WO2024017644A1/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH692695A5 (de) * | 1997-09-22 | 2002-09-30 | Fiat Sig Schienenfahrzeuge Ag | Schienenfahrzeug. |
| DE10316297A1 (de) * | 2003-04-08 | 2004-11-18 | Db Netz Ag | Abgestimmte Wankstützen und Torsionsmoment übertragende Kopplung zur Verbesserung der Seitenwindstabilität eines Fahrzeuges |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022207371B4 (de) | 2024-02-08 |
| DE102022207371A1 (de) | 2024-01-25 |
| US20260021834A1 (en) | 2026-01-22 |
| WO2024017644A1 (de) | 2024-01-25 |
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Legal Events
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Owner name: SIEMENS MOBILITY GMBH |
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| DAX | Request for extension of the european patent (deleted) | ||
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