EP4061687A1 - Antriebseinheit für ein schienenfahrzeug, sowie hohlwelle für eine solche - Google Patents
Antriebseinheit für ein schienenfahrzeug, sowie hohlwelle für eine solcheInfo
- Publication number
- EP4061687A1 EP4061687A1 EP20803784.6A EP20803784A EP4061687A1 EP 4061687 A1 EP4061687 A1 EP 4061687A1 EP 20803784 A EP20803784 A EP 20803784A EP 4061687 A1 EP4061687 A1 EP 4061687A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive unit
- coupling
- gear
- drive
- support element
- 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
- 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 a drive unit for a rail vehicle comprising a drive motor, a gear set and a connecting coupling for transmitting drive torque to a gear set shaft, the gear set being connected to the drive motor to form a motor-gear unit, and a hollow shaft as a gear hub for a gear wheel Has gear set.
- the invention also relates to a hollow shaft for such a drive unit.
- Drive units for rail vehicles are known, for example, from DE 19719746 C1.
- the drive unit described therein consisting of the motor and final drive, supports its weight via three suspensions on the bogie frame.
- the connecting coupling for transmitting the drive torque to the wheelset shaft is designed as a separate hollow coupling shaft with two curved tooth connections.
- the gearbox hollow shaft which carries the output gear of the final drive, is connected to external teeth. This is in engagement with the first internally toothed coupling sleeve of the separate coupling hollow shaft.
- the torque is transmitted to an external toothing on the wheelset shaft via another coupling sleeve, which is also internally toothed on the other side of the coupling hollow shaft.
- drive units are known in which rubber package couplings are used as connecting couplings.
- the object of the invention is now to further develop the drive unit in such a way that less installation space is required.
- the object is achieved by a drive unit according to claim 1. Further advantageous features are mentioned in the dependent claims.
- the drive unit is characterized in that the connecting coupling is designed as a toothed coupling, in such a way that an internally toothed coupling sleeve, which is rigidly connected or made in one piece with the hollow shaft, and an externally toothed output hub, which can be rigidly connected to a wheelset shaft, have a toothing are in engagement, so that the drive torque can be transmitted via it, and that a separate support element is present, which supports part of the weight of the motor-gear unit outside of the toothing on the output hub.
- a major advantage of the design according to the invention is that, due to the one-piece or rigidly connected design of the hollow shaft of the transmission with the internally toothed coupling sleeve and the support via a support element on the wheelset shaft, the connecting coupling requires significantly less installation space than previously known solutions.
- Another advantage is that the weight support and torque transmission functions are performed by separate components in the connecting coupling. It is thus easily possible to replace the separate support element when it is worn, without affecting the toothing of the connecting coupling.
- the separate support element can be made of a different material than the internally toothed coupling sleeve.
- the respective material can thus be better optimized for the different tasks.
- the support element is preferably designed as a ring. Alternatively, it can also be made from several individual segments, in particular from ring segments. In order to reduce the friction between the output hub and the support element and to enable a deflection of the connecting coupling, it is advantageous to design the support element with an arcuate contact surface to the output hub. Alternatively or additionally, it is advantageous to design the support surface on the output hub, which is in contact with the support element, in an arc shape.
- the connecting coupling preferably has a cover which is rigidly connected to the coupling sleeve and which closes the connecting coupling.
- a seal for the wheelset shaft is provided on the cover.
- the rigid connection can be implemented, for example, by means of screw connections. Centering should be provided on the cover and the coupling sleeve.
- the cover carries the separate support element.
- the coupling sleeve has an area which carries the separate support element, this area being arranged outside of the toothing.
- a further internal toothing can be provided on the cover, which engages in a further external toothing which is present on the output hub.
- the separate support element is thus arranged between the two toothings.
- the external diameter of the further external toothing on the output hub should preferably be smaller than the internal diameter of the support element. In this way, the support element can be removed beyond the additional external toothing for replacement, without the output hub having to be removed from the wheelset shaft.
- the internal teeth of the coupling sleeve and the external teeth of the output hub and / or the further internal teeth of the cover and the further external teeth are arcuate.
- the connecting coupling is designed as a so-called curved tooth coupling and can thus compensate for displacements and deflections.
- the drive unit preferably only has two connection pins on the drive side of the motor-gear unit, which are intended to attach the drive unit to a bogie frame of the rail vehicle. The fact that only two additional connections are required to support the weight saves additional installation space.
- the embodiment according to the invention can be used for drive units with single-stage or two-stage gear sets and for both spur gears and bevel gears.
- the invention also relates to a hollow shaft according to the independent claim.
- the hollow shaft according to the invention is characterized in that it forms the gear hub for receiving a gear wheel of a gear set and is rigidly connected or made in one piece with an internally toothed coupling sleeve, the internal toothing being suitable for transmitting drive torque in engagement with an externally toothed output hub on a wheelset shaft.
- the rigidly connected or one-piece design of the hollow shaft creates an integral component that includes both the gear hub of the gear set and the coupling sleeve of the connecting coupling.
- the drive unit can thus be designed to be very space-saving.
- the rigid connection can be made, for example, by screw connections.
- the hollow shaft can have an area on the coupling sleeve that can carry a separate support element that can transfer part of the weight of the drive unit to the wheelset shaft.
- FIG. 1 shows a schematic representation of a drive unit according to the invention
- FIG. 1 shows a drive unit according to the invention for a rail vehicle, comprising the drive motor 1, the wheel set 4 including the hollow shaft 3 with its gear hub 3.1, as well as the connecting coupling that is connected by the coupling sleeve 3.2 of the hollow shaft and the cover 3.3 and the output hub, which is not visible here is formed.
- the axis line of the drive 30 and the axis line of the output 40 are also shown.
- the hollow shaft 30 is arranged concentrically to the axis line of the output 40.
- This example shows a single-stage gear unit with a spur gear design.
- the invention can also be used advantageously with two-stage gear units or gear units with a bevel gear design.
- the drive unit is attached to the bogie frame 20 only via the two connections 21 and 22 and is also supported on the wheelset shaft 2 of the rail vehicle.
- the bogie frame 20 and the wheelset shaft 2 are not part of the drive unit.
- the output hub 11 is pressed onto the wheelset shaft 2 and is thus rigidly and non-rotatably connected to it.
- the output hub 11 has an external toothing 11.1 and a separate support area 11.3.
- the flea shaft 3 can be seen, which comprises a coupling sleeve 3.2 with the internal toothing 3.2a. This internal toothing 3.2a engages in the external toothing 11.1 and thus the drive torque can be transmitted from the flea shaft 3 to the wheelset shaft 2.
- the coupling sleeve 3.2 is made in one piece with the gear hub 3.1, which carries the gear 7.
- the gear 7 is the large gear of the final drive. It can, for example, be pressed onto the gear hub 3.1 or attached to it via a flange connection.
- the bearings 5 and 6 support the hollow shaft 3 concentrically to the wheelset shaft 2 in the gear housing (not shown).
- a cover 3.3 is present, which closes the connection coupling - formed from coupling sleeve 3.2 and output hub 11.
- the sealing of the cover 3.3 against the wheelset shaft 2 is not shown.
- the cover 3 carries the separate support element 12, which supports part of the weight of the drive unit on the wheelset shaft 2. It can be clearly seen that the support element 12 can simply be removed in the event of wear after the rail wheels, not shown, have been pulled off the wheelset shaft. For this, the output hub 11 does not have to be pulled off the wheelset shaft.
- the support element can be designed as a one-piece ring or as multi-part segments, in particular also as multi-part ring segments.
- the connecting coupling is a so-called curved tooth coupling and can compensate for axial and angular displacements of the wheelset shaft or deflection.
- FIG. 3a and 3b show variants for the execution of the connecting coupling in detail.
- a first variant is shown in Fig.3a and corresponds to that in Fig.2 described execution.
- the cover 3.3 is rigidly connected to the coupling sleeve 3.2 via the screw connection 10.
- the centering collar on the cover 3.3 can also be seen, which engages in a similar centering on the coupling sleeve 3.2.
- the support element 12 is carried by the cover. In the embodiment shown, both the contact surface of the support element 12 to the output hub and the contact surface of the support area 11.3 of the output hub are arcuate in order to enable optimal mobility in the support.
- FIG. 3b shows a further variant.
- the support element 12 is carried by the coupling sleeve 3.2.
- the teeth 3.2a, 11.1 are made somewhat shorter.
- the cover 3.3 is rigidly screwed to the coupling sleeve 3.2; again, the centering collar can be seen, which here simultaneously serves to fix the separate support element 12.
- a further internal toothing 3.3a is incorporated in the cover 3.3, which engages in a further external toothing 11.2 on the output hub. In this way, the drive torque can be transmitted to the wheelset shaft 2 via both gears.
- the support element 12 is located between the two toothings.
- One or both toothings are formed in an arc shape.
- the contact surfaces on the support element 12 and on the support area 11.3 are also designed to be curved. In this way, axial and angular displacements of the wheelset shaft 2 or deflections can be compensated for.
- the support element 12 has a larger inside diameter than the outside diameter of the further external toothing 11.2. In this way, the support element 12 can be removed without the output hub 11 having to be removed from the wheelset shaft 2.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019131157.8A DE102019131157A1 (de) | 2019-11-19 | 2019-11-19 | Antriebseinheit für ein Schienenfahrzeug, sowie Hohlwelle für eine solche |
| PCT/EP2020/081238 WO2021099141A1 (de) | 2019-11-19 | 2020-11-06 | Antriebseinheit für ein schienenfahrzeug, sowie hohlwelle für eine solche |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4061687A1 true EP4061687A1 (de) | 2022-09-28 |
| EP4061687B1 EP4061687B1 (de) | 2024-12-04 |
Family
ID=73198287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20803784.6A Active EP4061687B1 (de) | 2019-11-19 | 2020-11-06 | Antriebseinheit für ein schienenfahrzeug, sowie hohlwelle für eine solche |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4061687B1 (de) |
| DE (1) | DE102019131157A1 (de) |
| PL (1) | PL4061687T3 (de) |
| WO (1) | WO2021099141A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8412522U1 (de) * | 1984-04-21 | 1985-01-10 | Carl Hurth Maschinen- und Zahnradfabrik GmbH & Co, 8000 München | Antriebsaggregat fuer schienenfahrzeuge |
| DE59806145D1 (de) * | 1997-05-09 | 2002-12-12 | Siemens Ag | Antriebseinheit für Schienenfahrzeuge |
| DE19719746C1 (de) * | 1997-05-09 | 1998-08-20 | Siemens Ag | Antriebseinheit für Schienenfahrzeuge |
| ES2427846T3 (es) * | 2010-11-29 | 2013-11-04 | Siemens Aktiengesellschaft | Dispositivo de acoplamiento |
| DE102011086020A1 (de) * | 2011-11-09 | 2013-05-16 | Zf Friedrichshafen Ag | Getriebeeinheit |
| DE102015222125A1 (de) * | 2015-11-10 | 2017-05-11 | Bombardier Transportation Gmbh | Antriebsanordnung für ein Schienenfahrzeug, Schienenfahrzeug mit der Antriebsanordnung und Verfahren zur Herstellung |
| DE102018203073A1 (de) * | 2018-03-01 | 2019-09-05 | Zf Friedrichshafen Ag | Antriebsanordnung für ein Schienenfahrzeug |
-
2019
- 2019-11-19 DE DE102019131157.8A patent/DE102019131157A1/de active Pending
-
2020
- 2020-11-06 PL PL20803784.6T patent/PL4061687T3/pl unknown
- 2020-11-06 EP EP20803784.6A patent/EP4061687B1/de active Active
- 2020-11-06 WO PCT/EP2020/081238 patent/WO2021099141A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021099141A1 (de) | 2021-05-27 |
| EP4061687B1 (de) | 2024-12-04 |
| DE102019131157A1 (de) | 2021-05-20 |
| PL4061687T3 (pl) | 2025-04-22 |
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