EP4143070A1 - Anordnung für ein schienenfahrzeug - Google Patents
Anordnung für ein schienenfahrzeugInfo
- Publication number
- EP4143070A1 EP4143070A1 EP21762391.7A EP21762391A EP4143070A1 EP 4143070 A1 EP4143070 A1 EP 4143070A1 EP 21762391 A EP21762391 A EP 21762391A EP 4143070 A1 EP4143070 A1 EP 4143070A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- protective
- shaft
- arrangement
- wheelset
- 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
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C3/00—Electric locomotives or railcars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
- B61C9/44—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with hollow transmission shaft concentric with wheel axis
Definitions
- the invention relates to an arrangement for a rail vehicle, a hollow shaft motor with a corresponding arrangement, and a rail vehicle.
- Hollow shaft motors can be used as drive motors in rail vehicles, for example. These can be used as a so-called direct drive, in which a wheel set shaft extends through the rotor of the hollow shaft motor and the wheel set shaft is driven directly by the rotor.
- the hollow shaft motor is held at a radial distance from the axle by means of a motor attachment.
- the invention is based on the object of specifying an arrangement in which, in the event of a failure of the motor attachment of the hollow shaft motor, damage to the motor and the risk of accidents and in particular the risk to persons are reduced.
- a protective material is arranged in the area of the radial air gap between the rotor and the wheelset shaft, which separates the rotor from the wheelset shaft in the event of a failure of the motor attachment of the hollow shaft motor and subsequent support of the rotor on the wheelset shaft, the protective material softer than the material of the axle and softer than at least one material of the rotor.
- the protective material forms at least one protective ring, which is arranged on the inside of the hollow rotor and has a smaller inner diameter than the rotor, with the at least protective ring resting on the wheel set shaft in the event of a failure of the motor attachment, or arranged on the outside of the wheel set shaft , has a larger outer diameter than the wheelset shaft and supports the rotor in the event of a failure of the engine mount .
- the protective material forms at least one protective tube, which is arranged on the inside of the hollow rotor and has a smaller inner diameter than the rotor, with the at least one protective tube resting on the wheelset shaft in the event of a failure of the motor attachment, or on on the outside of the wheelset shaft, has a larger outer diameter than the wheelset shaft and supports the rotor in the event of a failure of the motor mounting.
- the protective material forms at least two protective rings, which are each arranged on the inside of the hollow rotor, have a smaller inner diameter than the rotor and are spaced apart axially, with one of the protective rings in the area of one axial end of the rotor and the other protective ring are arranged in the region of the other axial end of the rotor.
- the two axially spaced protective rings consist of materials of different hardness.
- a radially inner rotor tube is arranged between the two axially spaced protective rings and is fixed axially by at least one of the protective rings.
- Such an inner rotor tube can advantageously shield cavities in the rotor from the wheelset shaft, for example.
- the rotor comprises ferrous laminated cores and the protective material is softer than the material of the ferrous laminated cores.
- the at least one protective ring and/or the at least one protective tube is mounted as a separate part on the inner surface of the rotor or on the outer surface of the wheelset shaft or applied by a coating process.
- the protective material is iron-free.
- the protective material has aluminum and/or copper or consists of these.
- the protective material has or consists of rubber, for example specifically acrylonitrile-butadiene rubber and/or natural rubber.
- the protective material has a maximum yield point of 200 N/mm 2 .
- the hollow shaft motor is held by a chassis or frame of a vehicle and the wheel set shaft is rotatably mounted by means of bearings attached to the chassis or the frame.
- the rotor is rotationally connected at one of its two rotor ends by means of an axially and/or radially movable connecting device to the wheel set shaft, the connecting device enabling an axial and/or radial relative movement between the rotor end and the wheel set shaft.
- a protective ring close to the connecting device is softer than a protective ring further away from the connecting device.
- Such a difference in hardness of the protective material is possible because a mechanical stress on the near protective ring is smaller than that on the far protective ring in the event of a failure of the engine mount.
- the protective material forms at least two protective rings, which are each arranged on the outside of the wheelset axle, have a larger outer diameter than the wheelset axle and are spaced apart axially, with one of the protective rings in the area of one axial end of the rotor and the other protective ring in the area of the other axial end of the rotor is mounted on the wheelset shaft.
- the object is also achieved by a hollow shaft motor which has an arrangement according to the invention.
- a rail vehicle with at least one arrangement according to the invention or at least one hollow shaft motor according to the invention.
- the rail vehicle can be, for example, a rail vehicle powered externally via current collectors, a battery-operated rail vehicle, a rail vehicle equipped with fuel cells, or a hybrid rail vehicle.
- FIG. 1 shows an exemplary embodiment of an arrangement according to the invention, which forms part of a vehicle (not shown in detail), in particular a rail vehicle, with a hollow shaft motor being held in its normal position by a motor attachment,
- FIG. 2 shows the arrangement according to FIG.
- FIG. 3 shows an exemplary embodiment of an arrangement according to the invention, in which the protective material forms an inner protective tube
- FIG. 4 shows an exemplary embodiment of an arrangement according to the invention, in which a radially inner rotor tube is arranged between two axially spaced protective rings, and
- FIG. 5 shows an exemplary embodiment of an arrangement according to the invention, in which protective rings are arranged on the axle.
- FIG. 1 shows an exemplary embodiment of an arrangement 5 according to the invention, which forms part of a vehicle (not shown in detail), in particular a rail vehicle.
- the arrangement 5 comprises a hollow shaft motor 10 which has an outer stator 11 and an inner, hollow rotor 12 .
- the rotor 12 comprises ferrous laminated cores through which magnetic fields generated by the stator 11 pass during operation of the hollow shaft motor 10 .
- the stator 11 is held by a housing 13 of the hollow shaft motor 10, which in turn is held by a motor attachment 14, which is only indicated, on a chassis or frame of the vehicle which is not shown in any more detail.
- a wheelset shaft 20 extends through the rotor 12 , which is hollow on the inside, and a vehicle wheel 30 of the vehicle is attached to each shaft end.
- Wheelset shaft 20 is rotatably mounted on the chassis or frame of the vehicle by means of bearings, which are also not shown in FIG. 1 for reasons of clarity.
- the rotor 12 is rotatably connected to the wheel set shaft 20 by means of a connecting device 40, which is preferably axially and radially movable and allows a certain axial and radial relative movement between the rotor 12 and the wheel set shaft 20, for example to absorb vibrations of the wheel set shaft 20 while driving be able .
- a connecting device 40 which is preferably axially and radially movable and allows a certain axial and radial relative movement between the rotor 12 and the wheel set shaft 20, for example to absorb vibrations of the wheel set shaft 20 while driving be able .
- the motor attachment 14 keeps the hollow shaft motor 10 and thus also the rotor 12 separate from the wheelset shaft 20 while forming a radial air gap 50 .
- the air gap 50 contains two protective rings 60 and 70 which are attached to the inside 12a of the hollow rotor 12 and have a smaller inside diameter than the rotor 12 .
- the function of the guard rings 60 and 70 is to form a protective material that will keep the rotor 12 separate from the axle 20 in the event of a failure of the engine mount 14 . If the motor attachment 14 fails, the hollow shaft motor 10 will fall down in the direction of the arrow Z. In this case, the protective rings 60 and 70 prevent the rotor 12 from hitting the wheelset axle 20 and damaging it.
- the guard rings 60 and 70 are facing the mentioned protective effect of a material that is softer than the material of the wheelset shaft 20 , which is preferably made of steel, and softer than the material of the ferrous laminated cores of the rotor 12 .
- FIG. 2 shows the arrangement 5 according to FIG. 1 after failure of the engine attachment 14 . It can be seen that the hollow shaft motor 10 has lowered and the protective rings 60 and 70 are supported on the wheelset shaft 20 . The rotor 12 remains separated from the axle 20 by the protective rings 60 and 70 so that it cannot damage it.
- the two protective rings 60 and 70 are preferably made of aluminum, copper, rubber or caoutchouc. It is particularly advantageous if the protective ring 60 close to the connecting device 40 consists of a softer material than the protective ring 70 further away from the connecting device 40 .
- FIG. 3 shows a further exemplary embodiment of an arrangement in which a protective material is arranged between the rotor 12 and the wheelset axle 20 .
- the protective material forms a protective tube 80 which bears against the inside 12a of the rotor 12 and is firmly connected to the rotor 12 .
- the protective tube 80 can be a separate part that is inserted into the rotor 12; alternatively, the protective tube 80 can also have been applied to the inside 12a of the rotor 12 as part of a coating process, for example by cold gas spraying.
- the protective tube 80 separates the rotor 12 from the wheelset shaft 20, as was explained above in connection with the protective rings 60 and 70 in the exemplary embodiment according to FIGS.
- FIG. 4 shows a third exemplary embodiment from an arrangement according to the invention, in which between the rotor 12 and Axle 20 protective material is present.
- the two protective rings 60 and 70 perform a double function.
- they serve, as explained in connection with FIGS. 1 and 2, to keep the rotor 12 separate from the wheelset shaft 20 in the event of a failure of the motor attachment 14;
- they serve to axially fix a rotor tube 90 lying radially on the inside, which separates cavities 91 within the rotor 12 from the wheelset shaft 20 .
- Cavities 91 within the rotor 12 can advantageously be provided in order to achieve a large rotor diameter with the lowest possible overall weight with a view to a high torque of the hollow shaft motor 10 .
- FIG. 5 shows a fourth exemplary embodiment of an arrangement according to the invention, in which protective material is provided between wheel set axle 20 and rotor 12 .
- the protective material is provided on the wheel set shaft 20 in the arrangement according to FIG.
- the protective effect of the protective rings 60 and 70 the above statements in connection with FIGS. 1 and 2 apply accordingly.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020210211.2A DE102020210211A1 (de) | 2020-08-12 | 2020-08-12 | Anordnung mit Hohlwellenmotor |
| PCT/EP2021/072076 WO2022033989A1 (de) | 2020-08-12 | 2021-08-06 | Anordnung für ein schienenfahrzeug |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4143070A1 true EP4143070A1 (de) | 2023-03-08 |
| EP4143070C0 EP4143070C0 (de) | 2024-04-10 |
| EP4143070B1 EP4143070B1 (de) | 2024-04-10 |
Family
ID=77520715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21762391.7A Active EP4143070B1 (de) | 2020-08-12 | 2021-08-06 | Anordnung für ein schienenfahrzeug |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11845474B2 (de) |
| EP (1) | EP4143070B1 (de) |
| DE (1) | DE102020210211A1 (de) |
| ES (1) | ES2992811T3 (de) |
| WO (1) | WO2022033989A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110943555A (zh) * | 2019-11-21 | 2020-03-31 | 新疆金风科技股份有限公司 | 具有定子和转子的装置及风力发电机组 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1107692B (de) * | 1955-08-17 | 1961-05-31 | Krauss Maffei Ag | Achsantriebseinheit fuer Schienentriebfahrzeuge, insbesondere fuer Diesellokomotiven |
| DE3479992D1 (en) * | 1983-10-17 | 1989-11-09 | Hurth Masch Zahnrad Carl | Drive unit for railway vehicles |
| CA2847390C (en) | 2011-09-13 | 2020-08-04 | Rolls-Royce Ab | A method of and a device for protecting a motor in a pod against shaft bending shocks |
| EP3185403A1 (de) | 2015-12-23 | 2017-06-28 | Siemens Aktiengesellschaft | Permanenterregte synchronmaschine mit automatischer rotorentkopplung im wicklungskurzschluss |
| EP3470288B1 (de) | 2017-10-10 | 2021-02-03 | Siemens Mobility GmbH | Schienenfahrzeug mit kompaktem direktantrieb |
| CN107776587A (zh) * | 2017-11-17 | 2018-03-09 | 大连交通大学 | 空心轴式轨道车辆永磁直驱牵引传动装置 |
| CN108099926A (zh) * | 2018-01-26 | 2018-06-01 | 大连交通大学 | 双空心轴式轨道车辆永磁直驱全悬挂牵引传动装置 |
| DE102018216490A1 (de) | 2018-09-26 | 2020-03-26 | Siemens Mobility GmbH | Läuferrohr für eine elektrische Maschine eines Fahrzeugs |
-
2020
- 2020-08-12 DE DE102020210211.2A patent/DE102020210211A1/de not_active Withdrawn
-
2021
- 2021-08-06 ES ES21762391T patent/ES2992811T3/es active Active
- 2021-08-06 EP EP21762391.7A patent/EP4143070B1/de active Active
- 2021-08-06 WO PCT/EP2021/072076 patent/WO2022033989A1/de not_active Ceased
- 2021-08-06 US US18/013,027 patent/US11845474B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020210211A1 (de) | 2022-02-17 |
| EP4143070C0 (de) | 2024-04-10 |
| ES2992811T3 (en) | 2024-12-18 |
| EP4143070B1 (de) | 2024-04-10 |
| US20230211812A1 (en) | 2023-07-06 |
| US11845474B2 (en) | 2023-12-19 |
| WO2022033989A1 (de) | 2022-02-17 |
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