EP4377181A1 - Schienenfahrzeug mit einer wagengelenkvorrichtung - Google Patents
Schienenfahrzeug mit einer wagengelenkvorrichtungInfo
- Publication number
- EP4377181A1 EP4377181A1 EP22789226.2A EP22789226A EP4377181A1 EP 4377181 A1 EP4377181 A1 EP 4377181A1 EP 22789226 A EP22789226 A EP 22789226A EP 4377181 A1 EP4377181 A1 EP 4377181A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carriage
- spring
- angular position
- rail vehicle
- relative
- 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
- B61G5/00—Couplings for special purposes not otherwise provided for
- B61G5/02—Couplings for special purposes not otherwise provided for for coupling articulated trains, locomotives and tenders or the bogies of a vehicle; Coupling by means of a single coupling bar; Couplings preventing or limiting relative lateral movement of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D13/00—Tramway vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D3/00—Wagons or vans
- B61D3/10—Articulated vehicles
-
- 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
- B61F5/38—Arrangements or devices for adjusting or allowing self- adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles
- B61F5/42—Adjustment controlled by buffer or coupling gear
Definitions
- the invention relates to a rail vehicle with at least a first carriage and a second carriage, which are coupled to one another by means of a carriage articulation device, the carriage articulation device having a variable resistance to twisting of the at least first carriage relative to the second carriage.
- multi-articulated low-floor trams with long head car modules and with chassis arranged in the front areas of the head modules in rear areas of the head car modules due to wide doors have car centers of gravity in the head car modules, which are arranged in front of the chassis centers of gravity in the direction of travel. Due to such car centers of gravity, multi-articulated low-floor trams often exhibit cornering behavior in which the end car modules initially push in the direction of the outside of the curve due to centrifugal forces when entering the curve and then, when the running gear begins to follow the curve, are suddenly forced into the curve.
- the stated approach has the disadvantage that it relates to extraordinary scenarios (collision), in which case the stiffness of car joints that increases with increasing speed, for example, is not suitable for increasing the driving safety and driving comfort of the rail vehicle when entering curves increase .
- the invention is therefore based on the object of specifying a rail vehicle that has been developed further than the prior art, the carriage articulation device of which enables a particularly high level of driving safety and a particularly high level of driving comfort, particularly in connection with entry into curved tracks.
- this object is achieved with a rail vehicle according to claim 1, in which a first resistance torque gradient of the carriage articulation device in a first angular position of the at least first carriage relative to the second carriage in a direction of rotation is greater in absolute terms than a second resistance torque gradient of the carriage articulation device in a second angular position of the at least first carriage relative to the second carriage in the same direction of rotation, wherein the first angular position is associated with a smaller rotation of the at least first carriage relative to the second carriage than the second angular position.
- This measure causes a variable rotational resistance of the carriage articulation device, through which, on the one hand, lateral forces from the first carriage can be transmitted not only to a chassis of the first carriage, but also to a certain extent to the second carriage to stabilize the rail vehicle and, on the other hand, when driving into a curve with increasing relative angular position between the first car and the second car decreases in its increase.
- this rotational resistance does not prevent the first car from turning into the curve and does not lead to excessive guiding forces between wheel sets of the running gear and rails of a track.
- Improvements in driving dynamics when driving the rail vehicle into curved tracks are promoted, for example, if a first resistance torque of the carriage articulation device in the first angular position is greater in magnitude than a second resisting torque of the carriage articulation device in a third angular position of the at least first carriage relative to the second carriage in the same direction of rotation, wherein the first angular position is associated with a smaller rotation of the at least first carriage relative to the second carriage than the third angular position.
- the carriage joint device has a maximum amount of third resistance torque in a fourth angular position of the at least first carriage relative to the second carriage between the first angular position and the third angular position in the same direction of rotation.
- a course of a resistance torque over an angular position can be mapped, for example, by a non-linear function of a higher order. Due to the maximum third resistance torque between the first angular position and the third angular position, the carriage articulation device initially stiffens or stiffens at small angular positions. has a stabilizing effect and gives way at larger angular positions, such as those that occur, for example, when the first car is already entering a curve while the second car is still driving on a straight line. This will achieves an improvement in the driving dynamics of the rail vehicle in connection with driving-in processes in curves.
- the carriage articulation device has a fulcrum, a first spring which is connected to at least the first carriage and the second carriage, with a first normal distance between a first spring longitudinal axis of the first spring and the fulcrum being variable, and a second spring, which is connected to at least the first carriage and the second carriage, with a second normal distance between a second spring longitudinal axis of the second spring and the pivot point being variable.
- resistance torques of the carriage articulation device are formed and set by spring forces of the first spring and the second spring and by the first normal distance and the second normal distance, which act as lever arms. Due to the variability of the first normal distance and the second normal distance, resistance torques generated during rotation of the first carriage relative to the second carriage are reduced in terms of magnitude in terms of their gradient as the relative angular position between the first carriage and the second carriage increases. If the gradients change their signs, for example during the twisting, then the resistance torques themselves can also be reduced in terms of absolute value.
- the carriage articulation device has a basic resistance in the direction of translation (eg in the direction of a vehicle longitudinal axis).
- a damping of relative movements between the first carriage and the second carriage is also effected when the first spring with a first damper to a first spring Damper unit is combined and the second spring is combined with a second damper to form a second spring-damper unit.
- the first normal distance is greater in the first angular position than in the second angular position.
- the first normal distance contributes to a reduction in the amount of resistance torque gradients or the resistance torques themselves.
- first roller contacts a first trough of the first mold contour and the second roller contacts a second trough of the second mold contour when the at least first carriage has a neutral angular position of 0° relative to the second carriage.
- the first roller and the second roller are surrounded by the first trough and the second trough.
- resistances have to be overcome.
- first roller and the second roller reach crests of the first shape contour and the second shape contour as the relative angular position between the first carriage and the second carriage increases, a further increase in the angular position can, for example, cause a decreasing resistance torque of the carriage joint device.
- Fig. 1 A schematic plan view of a section of an exemplary first embodiment variant of a rail vehicle according to the invention with a first carriage and a second carriage, the carriage articulation device of which comprises a carriage articulation, a first spring and a second spring,
- Fig. 2 An exemplary embodiment variant of a diagram that shows a course of a resistance torque of a carriage articulation device over an angular position between two carriages of a rail vehicle
- Fig. 3 A schematic plan view of a section of an exemplary second embodiment variant of a rail vehicle according to the invention with a first carriage and a second carriage, the carriage articulation device of which comprises a carriage articulation, a first spring-damper unit and a second spring-damper unit, and
- Fig. 4 A schematic plan view of a section of an exemplary third embodiment variant of a rail vehicle according to the invention with a first carriage and a second carriage, the carriage articulation device of which comprises a carriage articulation, a curved body, a first guide arm with a first roller and a second guide arm with a second roller.
- Fig. 1 shows a schematic plan view of a detail from an exemplary first embodiment variant of a rail vehicle according to the invention with a first carriage 1 and a second carriage 2 .
- the rail vehicle is designed as a low-floor tram.
- the first carriage 1 has a first idler gear 3
- the second carriage 2 has a second idler gear 4 .
- the rail vehicle comprises further chassis and further wagons, which, however, are shown in FIG. 1 are not shown.
- the first carriage 1 and the second carriage 2 are coupled to one another by means of a carriage articulation device 5 , the carriage articulation device 5 having variable resistance to twisting of the first carriage 1 relative to the second carriage 2 .
- This twisting takes place essentially in relation to a parallel to one shown in FIG. 1 projecting appearing vehicle vertical axis 42 of the rail vehicle.
- This parallel acts as the axis of rotation and can move or rotate as the rotation progresses. change .
- the carriage articulation device 5 comprises a carriage articulation 6 , at the center of which is arranged a pivot point 7 of the carriage articulation device 5 , a first spring 8 and a second spring 9 .
- the first spring 8 and the second spring 9 are articulated with the first carriage 1 and the second carriage 2 or . rotatably connected and are designed as preloaded, metallic helical compression springs.
- a first spring longitudinal axis 10 of the first spring 8 and a second spring longitudinal axis 11 of the second spring 9 are in a relative neutral angle position 12 of 0° between the first carriage 1 and the second carriage 2, as shown in FIG. 1 is oriented obliquely with respect to a vehicle longitudinal axis 13 .
- a first normal distance 14 is provided between the first spring longitudinal axis 10 and the pivot point 7
- a second normal distance 15 is provided between the second spring longitudinal axis 11 and the pivot point 7 .
- the first carriage 1 is therefore rotated relative to the second carriage 2 .
- a first spring force of the first spring 8 and a second spring force of the second spring 9 change during rotation between the neutral angular position 12, the first angular position 16, the second angular position 17 and the third angular position 18, since the first spring 8 and the second spring 9 compressed or due to their connections with the first carriage 1 and the second carriage 2 during the twisting. to be stretched .
- the first normal distance 14 and the second normal distance 15 change during the twisting, since the orientations of the first spring longitudinal axis 10 and the second spring longitudinal axis 11 change during the twisting.
- the first spring 8 is compressed and the first spring force is increased, as a result of which the resistance torque between the neutral angular position 12 and the first angular position 16 is increased.
- the first normal distance 14 influences the resistance torque more than the first spring force, which reaches a spring force maximum during the twisting.
- the resistance torque decreases in terms of magnitude after a maximum resistance torque has been reached, which is located between the first angular position 16 and the third angular position 18 .
- the second spring force initially decreases during said torsion and rotates through 180° from a relaxed spring position, ie it changes from a compressive force to a tensile force.
- the second normal distance 15 increases during said twisting, this influences the resistance torque only insignificantly or only slightly due to the second spring force initially decreasing during the twisting and later being rotated by 180°. not in an undesirable way.
- the resistance torque does not change in its tendency to initially increase and then to decrease after the resistance torque maximum has been reached.
- FIG. 2 discloses an exemplary embodiment variant of a diagram which shows a profile of a resistance torque of a carriage articulation device 5 of a rail vehicle, as is shown in FIG. 1 shows an angular position between a first carriage 1 and a second carriage 2 of the rail vehicle.
- the diagram has an abscissa 20 on which the angular position is plotted, and an ordinate 21 on which the resistance torque is plotted.
- the course of the drag torque is non-linear.
- the resistance torque is not equal to zero, since a carriage joint 6 of the carriage joint device 5 has a basic rotational resistance.
- the carriage articulation device 5 At a first angular position 16 between the first carriage 1 and the second carriage 2 in a direction of rotation, which is greater than the neutral angular position 12, the carriage articulation device 5 has a first resistance torque 22 against twisting of the first carriage 1 relative to the second carriage 2, which is greater than the resistance torque in the neutral angle position 12 .
- the carriage articulation assembly 5 also exhibits a first resistance torque gradient 25 .
- the carriage articulation device 5 exhibits a second resistance torque gradient 26 .
- the absolute value of the first resistance torque gradient 25 is greater than that of the second resistance torque gradient 26 . An increase in the resistance torque is therefore reduced, and the course of the resistance torque becomes flatter.
- the carriage articulation device 5 has a second resistance torque 23 against the twisting of the first carriage 1 relative to the second carriage 2 .
- the first carriage 1 is twisted more relative to the second carriage 2 than in the first angular position 16 .
- the absolute value of the first resistance torque 22 is greater than that of the second resistance torque 23 .
- the carriage articulation device 5 has a maximum third resistance torque 24 in terms of absolute value.
- the Drag Torque starting from the resistance torque in the neutral angular position 12, through the first resistance torque 22 in the first angular position 16 to the maximum third resistance torque 24, and then decreases with a further increase in the angular position between the first carriage 1 and the second carriage 2 in the same direction of rotation via the second resistance torque 23 in the third angular position 18 in terms of amount.
- the course of the resistance torque between the first resistance torque 22 and the second resistance torque 23 is influenced by the fact that an example in connection with FIG.
- first normal distance 14 between a first spring longitudinal axis 10 of the first spring 8 and a pivot point 7 of the carriage articulation device 5 is greater in the first angular position 16 than in the second angular position 17 and in the third angular position 18 .
- FIG. 3 shows a schematic plan view of a section of an exemplary second embodiment variant of a rail vehicle according to the invention with a first carriage 1 and a second carriage 2 which are coupled to a carriage articulation 6 via a carriage articulation device 5 .
- This exemplary second embodiment variant is structurally and functionally similar to that exemplary first embodiment variant of a rail vehicle according to the invention, which is shown in FIG. 1 is shown. It are therefore shown in FIG. 3 partially the same reference characters as in FIG. 1 used .
- Fig. 1 has the carriage articulation device 5 according to FIG. 3 a first spring-damper unit and a second spring-damper unit, which are arranged between the first carriage 1 and the second carriage 2 and are articulated to the first carriage 1 and to the second carriage 2.
- a first spring 8 and a first damper 27 are combined to form the first spring-damper unit, and a second spring 9 and a second damper 28 to form the second spring-damper unit.
- the first spring 8 and the second spring 9 are in the form of compression-preloaded helical springs, with the first spring 8 encasing the first damper 27 and the second spring 9 encasing the second damper 28 .
- the first damper 27 and the second damper 28 are designed as hydraulic telescopic dampers.
- a first longitudinal spring axis 10 of the first spring-damper unit and a second longitudinal spring axis 11 of the second spring-damper unit are shown in FIG. 3 shown neutral angle position 12 of 0 ° between the first car 1 and the second car 2 aligned obliquely to a vehicle longitudinal axis 13.
- Fig. 4 shows a schematic plan view of a section from an exemplary third embodiment variant of a rail vehicle according to the invention with a first carriage 1 and a second carriage 2 which are connected to one another by means of a carriage articulation device 5 with a carriage articulation 6 .
- the first carriage 1 has a first idler gear 3
- the second carriage 2 has a second idler gear 4
- the rail vehicle comprises further carriages and further loose wheel bogies which, however, are shown in FIG. 4 are not shown.
- the carriage articulation device 5 further has a multiple counter-curved curved body 29, a first guide arm 30, a first roller 32, which with the first Guide arm 30 is rotatably connected, a second guide arm 31 and a second roller 33 rotatably connected to the second guide arm 31 .
- the first guide arm 30 and the second guide arm 31 are coupled in an articulated manner to the first carriage 1 .
- the cam body 29 is immovable relative to the second carriage 2 connected to the second carriage 2 .
- the first roller 32 and the second roller 33 are coupled to the cam 29 via rolling contacts, i. H . can roll on the curved body 29 .
- the curved shaped body 29 has a wavy first shape contour 34 which contacts the first roller 32 and a wavy second shape contour 35 which contacts the second roller 33 .
- the cam body 29 is in a neutral angle position 12 of 0° between the first carriage 1 and the second carriage 2, as shown in FIG. 4 is shown symmetrically with respect to a vehicle longitudinal axis 13 of the rail vehicle.
- the first guide arm 30 with the first roller 32 and the first contour 34 are arranged above the longitudinal axis 13 of the vehicle, and the second guide arm 31 with the second roller 33 and the second contour 35 are arranged below the longitudinal axis 13 of the vehicle.
- the first roller 32 contacts a first trough 36 of the first contour 34 and the second roller 33 contacts a second trough 37 of the second contour 35 .
- first carriage 1 deflects from the neutral angular position 12 in the direction of rotation to a first angular position 16 during rotation relative to the second carriage 2, the first roller 32 moves out of the first wave trough 36 to a first wave crest 38 of the first contour 34 and the second roller 33 moves out of the second wave trough 37 onto a second wave crest 39 of the second mold contour 35 .
- contact forces between the first roller 32 and the first mold contour 34 and between the second roller 33 and the second mold contour 35 increase.
- a pressure-preloaded first pressure spring 40 is arranged between the first carriage 1 and the first guide arm 30
- a pressure-preloaded second pressure spring 41 is arranged between the first carriage 1 and the second guide arm 31 .
- the first pressure spring 40 presses the first roller 32 against the first contour 34
- the second pressure spring 41 presses the second roller 33 against the second contour 35 .
- the first roller 32 and the second roller 33 are connected via a clasp and thus against the first mold contour 34 or the second mold contour 35 is pressed.
- the first guide arm 30 and the second guide arm 31 themselves have pressing means, for example torsion springs in Joints of the first guide arm 30 and the second guide arm 31 .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Vehicle Body Suspensions (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA50780/2021A AT525097B1 (de) | 2021-09-30 | 2021-09-30 | Schienenfahrzeug |
| PCT/EP2022/076731 WO2023052311A1 (de) | 2021-09-30 | 2022-09-26 | Schienenfahrzeug mit einer wagengelenkvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4377181A1 true EP4377181A1 (de) | 2024-06-05 |
| EP4377181B1 EP4377181B1 (de) | 2026-02-11 |
Family
ID=83690170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22789226.2A Active EP4377181B1 (de) | 2021-09-30 | 2022-09-26 | Schienenfahrzeug mit einer wagengelenkvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20240425092A1 (de) |
| EP (1) | EP4377181B1 (de) |
| AT (1) | AT525097B1 (de) |
| WO (1) | WO2023052311A1 (de) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0774394A2 (de) * | 1995-11-20 | 1997-05-21 | Duewag Aktiengesellschaft | Stadtbahnwagen |
| BRPI0804481A2 (pt) * | 2007-04-02 | 2011-08-30 | Huebner Gmbh | articulação entre dois componentes de veìculo conectados articulados um ao outro, por exemplo, um véiculo que apresenta uma conexão articulada |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2854776A1 (de) * | 1978-12-19 | 1980-07-17 | Maschf Augsburg Nuernberg Ag | Gelenksteuerung fuer schienenfahrzeuge |
| DE3030015A1 (de) * | 1980-08-08 | 1982-04-01 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | Gelenkfahrzeug, insbesondere omnibus |
| DE19654862C2 (de) * | 1996-12-04 | 1999-11-04 | Abb Daimler Benz Transp | Verfahren zur Beeinflussung des Knickwinkels von Schienenfahrzeug-Wagenkästen und Schienenfahrzeug zur Durchführung des Verfahrens |
| DE102007004522A1 (de) * | 2007-01-24 | 2008-07-31 | Bombardier Transportation Gmbh | Mehrgliedriges Fahrzeug |
| DE102008063260A1 (de) * | 2008-12-31 | 2010-09-16 | Bombardier Transportation Gmbh | Fahrzeug mit mehreren gelenkig verbundenen Wagenkästen |
| EP2695790B1 (de) * | 2012-08-06 | 2018-10-03 | ATG Autotechnik GmbH | Dachgelenk für ein mehrgliedriges Fahrzeug |
-
2021
- 2021-09-30 AT ATA50780/2021A patent/AT525097B1/de active
-
2022
- 2022-09-26 US US18/696,727 patent/US20240425092A1/en active Pending
- 2022-09-26 WO PCT/EP2022/076731 patent/WO2023052311A1/de not_active Ceased
- 2022-09-26 EP EP22789226.2A patent/EP4377181B1/de active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0774394A2 (de) * | 1995-11-20 | 1997-05-21 | Duewag Aktiengesellschaft | Stadtbahnwagen |
| BRPI0804481A2 (pt) * | 2007-04-02 | 2011-08-30 | Huebner Gmbh | articulação entre dois componentes de veìculo conectados articulados um ao outro, por exemplo, um véiculo que apresenta uma conexão articulada |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2023052311A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023052311A1 (de) | 2023-04-06 |
| EP4377181B1 (de) | 2026-02-11 |
| AT525097B1 (de) | 2022-12-15 |
| AT525097A4 (de) | 2022-12-15 |
| US20240425092A1 (en) | 2024-12-26 |
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