EP1667883A1 - Elektrischer direktantrieb - Google Patents
Elektrischer direktantriebInfo
- Publication number
- EP1667883A1 EP1667883A1 EP04787054A EP04787054A EP1667883A1 EP 1667883 A1 EP1667883 A1 EP 1667883A1 EP 04787054 A EP04787054 A EP 04787054A EP 04787054 A EP04787054 A EP 04787054A EP 1667883 A1 EP1667883 A1 EP 1667883A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- direct drive
- wheel set
- shaft
- electrical
- 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
Definitions
- the invention relates to an electrical direct drive of a wheel set of a vehicle.
- the vehicle is in particular a rail vehicle such as a train, a railcar, a locomotive or a tram.
- a drive of a wheel set of a vehicle which has two wheels located on a wheel set shaft.
- the wheels can be driven by at least one inner rotor motor comprising the wheelset shaft.
- the internal rotor motor has a stator and a rotor.
- the tubular rotor has permanent magnets on its surface.
- Electric direct drives have an electric motor, which is in particular a synchronous motor or an asynchronous motor.
- Synchronous motors as well as asynchronous motors have losses in the rotor despite their good efficiency. These losses cause the rotor to heat up. The greater the heating of the rotor, the lower the efficiency of the electrical machine, such as the synchronous motor or the asynchronous motor.
- the object of the present invention is to improve an electrical direct drive.
- the improvement relates in particular to the cooling of the electrical direct drive or the protection of a wheel set shaft of the electrical direct drive from damage.
- the object is achieved by an electrical direct drive with the features according to claim 1.
- the subclaims 2 to 10 relate to inventive developments of the electric direct drive.
- an electrical direct drive of a wheel set of a vehicle has a stator and a rotor, the rotor being mechanically coupled to a wheel set shaft. At least the rotor has a cooling device. The runner can be cooled using the cooling device. The performance of the electric direct drive can be improved by cooling the rotor. Losses in the rotor can be dissipated by means of the cooling device, so that the electrical direct drive can be used as well as possible.
- the utilization relates to an electrical machine, the electrical machine being part of the electrical direct drive which, in addition to the electrical machine which has the stator and the rotor, also has at least one wheel set shaft.
- the cooling device has in particular cooling channels, an air inlet and at least one fan.
- the cooling channels advantageously run inside the rotor.
- the fan is used as a fan for the rotor, an advantageous "way this fan is heranziehbar for cooling of the stator.
- the fan is in particular a suction fan or a pressure fan. As the suction fan is the fan the insloesondere an air outlet of the cooling means with out.
- the wheel set shaft between wheels of the wheel set is advantageously completely encased by means of the electrical machine of the electrical direct drive.
- the casing protects the wheelset shaft from damage. Damage to rail vehicles can be caused, for example, by ballast thrown up during the journey or dirt sucked up.
- the electrical direct drive and / or the cooling device has at least one means for protecting the wheel set shaft.
- the electric direct drive as a travel drive for a rail vehicle is mounted directly on a wheelset shaft, then remaining open positions of the wheelset shaft can be protected against damage by means of the electric direct drive or by means of the electric machine of the electric direct drive. Contamination that penetrates into the wheel set shaft area can be traced or deposited in such a way that damage to the wheel set shaft that jeopardizes the function has not occurred or has been reduced.
- the rotor has at least one rotor hub.
- the rotor hub is mechanically coupled to the wheelset shaft, the rotor hub being connected to a rotor reaction part sensor via at least one rotor web.
- the rotor reaction part sensor is provided as a sensor for a rotor reaction part.
- the rotor reaction part has permanent magnets, for example.
- Cooling channels can be formed by forming webs within the rotor. The webs are designed such that an axial channel for guiding cooling air can be formed.
- a fan is attached to one axial end of the rotor, for example, which rotates at the speed of the wheel set. Air can be sucked in by means of the fan through an opening at the other axial end of the rotor.
- This air is directed in particular through an air guiding device in the interior of the rotor to the inner walls of the sensor of the rotor reaction part.
- An air inlet into the rotor is formed, for example, by a standing air inlet that is not moved with the rotor.
- the air inlet can also be designed such that it moves with the rotor.
- the electrical direct drive advantageously has at least least a wheel disc closure, with a wheel disc closure advantageously resting on both wheels of the wheel set.
- the wheel disc end can be designed so that it rotates synchronously with the wheel. This means there is no wear on the wheel disc end or the wheel (wheel disc). This is particularly advantageous if the wheels cannot be moved symmetrically or synchronously with the rotor. This is the case, for example, when the wheelset shaft is subject to bending stress and bends slightly. If this is not to be expected, the wheel disc end can also be coupled to the runner.
- the wheel disc closure can be designed as an independent part or as part of the cooling device or as part of a housing of the electrical direct drive or as part of a housing of the electrical machine.
- the fan is attached to the wheelset shaft. This provides increased protection for the wheel set shaft in the area of the attachment.
- the fan or the air inlet is part of a bearing seal. Improved protection of the bearings of the electric direct drive can thereby be achieved. With the help of the bearings, the rotor can be rotated with respect to the stand.
- the protection of the wheelset shaft against, in particular, dirt or damage can be improved, as already described.
- This can be achieved in particular by designing the fan axially end-side with respect to the rotor and the axially end-side air inlet in such a way that they close as tightly as possible with wheel disks of the wheels of the wheel set.
- the wheel set shaft is thus completely enclosed between the wheels of the wheel set and better protected against damage.
- the means for protecting the wheel set shaft is a catching device, the catching device being in particular part of the fan or part of the air inlet.
- the catching device is designed, for example, as a type of catching channel in the interior of the electric direct drive, in which case coarse dirt can be caught by means of the catching device.
- the catching device is advantageously designed in such a way that coarse dirt or foreign bodies entering it can be led out to the outside, that is to say outside of the electrical direct drive or outside of the electrical machine.
- Additional guiding devices on the inside of the rotor can, for example, additionally ensure that dirt or foreign bodies that nevertheless get inside do not continuously fall back onto the wheelset shaft while it is being moved. Foreign bodies or dirt remain in the interior of the direct electric drive in such a way that the wheelset shaft is not unduly damaged. When cleaning is to be carried out, such foreign bodies or dirt remaining inside the electric direct drive can be removed.
- Inner walls of the rotor in particular inner walls of the rotor reaction part receiver and also walls of the cooling air ducts, are advantageously provided with a dirt-binding surface.
- a dirt-binding surface are rough surfaces or surfaces that have an adhesive.
- Such a dirt-binding surface allows dirt or foreign bodies to be attached to a surface in such a way that the dirt or foreign bodies are no longer freely movable within the electrical direct drive. Freedom of movement could damage the wheelset shaft or the rotor. If the dirt-binding surface is rotated and has a surface normal in the axial direction, the centrifugal force advantageously supports the movement-inhibiting effect of the dirt-binding surface.
- the invention enables rotor cooling for a rotor of an electrical machine of an electrical direct drive for a wheelset shaft, which in addition to cooling also fulfills the task of protecting the wheelset shaft.
- the cooling device for the rotor also has parts which are part of the bearing seal.
- the means for protecting the wheel set shaft is a dirt guide device.
- dirt guide device dirt can be conducted into certain areas inside the direct electric drive, these areas also being able to represent deposition areas for dirt or foreign bodies.
- the air inlet has a rebound wall.
- a rebound wall which has a certain inclination with respect to the expected penetration of foreign bodies, foreign bodies which can penetrate into the interior of the electrical direct drive can be rejected.
- the rebound wall must therefore be designed in such a way that foreign bodies which enter the air inlet bounce out of the opening of the air inlet through this rebound wall.
- the wheelset shaft To protect the wheelset shaft, it has a continuous casing between the wheels of the wheelset. As already described above, this sheathing can be achieved, for example, by a large number of components of the electrical direct drive. Examples of these components are the electrical machine, the cooling device, or wheel disc closures.
- the electrical direct drive 1 shows an electrical direct drive 1.
- the electrical direct drive 1 has an electrical machine 2 on.
- the electrical machine 2 in turn has a stand 7 and a rotor 3.
- a cooling jacket 5 is provided, which has stator cooling channels 6.
- the electrical direct drive has a wheelset shaft 11.
- the wheelset shaft is mechanically coupled to the rotor 3 of the electrical machine 2.
- the mechanical coupling takes place, for example, by shrinking the rotor 3 on the wheel set shaft 11.
- the rotor 3 advantageously has a plurality of cooling channels 22. Openings 23, 25 and 27 are provided in rotor 3 to form cooling channel 22, rotor 3 having webs 20 and 21.
- the openings 23 and 27 are formed by means of the webs 20.
- the opening 23 is formed by means of a rotor web 21.
- the rotor web 21 leads to a rotor hub 19.
- the rotor hub 19 is directly mechanically coupled to the wheelset shaft 11.
- the rotor hub 19 is connected via rotor webs 20, 21 to a sensor 14 for a rotor reaction part 15.
- the rotor reaction part 15 has, for example, permanent magnets.
- the rotor reaction part 15 is protected from the stator 7 by a protective part 17.
- the wheelset shaft 11 is connected to a wheelset 30, the wheelset 30 having wheels 31 and 32.
- the wheels 31, 32 can be braked by means of a schematically indicated brake 47.
- the rotor 3 is movable relative to the stator 7 by means of bearings 43.
- the bearings 43 have a bearing seal 29.
- the rotor 3 can be cooled by means of a fan 9.
- the fan 9 has fan blades 10 for generating an air flow. As a suction fan, the fan 9 sucks, which as a
- Self-ventilator coupled to the rotor 3 is cooling air from an air inlet 37 when the rotor 3 rotates.
- the air inlet 37 is designed, for example, as a nozzle.
- the cooling air shown as arrow 8 runs through the cooling duct 22.
- the air inlet 37 has an air inlet opening 36. Dirt particles, stones, etc. can be disadvantageous via this air inlet opening 36
- Foreign bodies (49) or the like which are thrown up from the floor in the direction of the air inlet 36, in particular when driving, enter the electrical machine 2. Such bodies are prevented by various measures from damaging the wheelset shaft 11 or are prevented from entering the electrical machine 2.
- the slope 38 of the air inlet 37 is a means of preventing damage to the wheelset shaft 11.
- the slope 38 is designed such that foreign bodies can be thrown back by a rebound wall 40. However, if a foreign body 49 gets further into the air inlet 37, the foreign body 49 is prevented from hitting the wheel set shaft 11 by means of a catching device 35.
- the catching device 35 forms a type of channel, the catching device 35 advantageously having a nose 45.
- the nose 45 is provided so that a foreign body 49 can be steered back from this nose 45 to the air inlet opening 36, so that the foreign body 49 leaves the area of the air inlet 37 again through the air inlet opening 36.
- the air inlet 37 advantageously has a wheel disc closure 41.
- the wheel disc termination 41 lies against the wheel 31 or at least close to it, so that foreign particles of this type, which can lead to damage to the wheel set shaft 11, can be prevented from this wheel set shaft 11.
- the fan 9 also advantageously has a wheel disc closure 42.
- the wheel disc termination 42 like the wheel disc termination 41, serves to protect the wheel set shaft 11.
- the cooling channel 22 has, for example, at least one air guiding device 39.
- the air guiding device 39 advantageously serves to guide the cooling air.
- the air guiding device can also be designed in such a way that the wheel set shaft 11 is protected by it.
- the air guiding device 39 has, in particular, a dirt guiding device 33 or is designed such that an air duct and a protective effect for the wheel set shaft can be achieved by one component.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10345888A DE10345888B4 (de) | 2003-09-30 | 2003-09-30 | Elektrischer Direktantrieb |
PCT/EP2004/010901 WO2005032902A1 (de) | 2003-09-30 | 2004-09-29 | Elektrischer direktantrieb |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1667883A1 true EP1667883A1 (de) | 2006-06-14 |
EP1667883B1 EP1667883B1 (de) | 2007-09-19 |
Family
ID=34399189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04787054A Expired - Lifetime EP1667883B1 (de) | 2003-09-30 | 2004-09-29 | Elektrischer direktantrieb |
Country Status (6)
Country | Link |
---|---|
US (1) | US7812486B2 (de) |
EP (1) | EP1667883B1 (de) |
CN (1) | CN100422017C (de) |
AT (1) | ATE373589T1 (de) |
DE (2) | DE10345888B4 (de) |
WO (1) | WO2005032902A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100148602A1 (en) * | 2008-12-12 | 2010-06-17 | Delphi Technologies, Inc. | Oil retainer cooling assembly for an electric motor |
US8159094B2 (en) * | 2009-03-11 | 2012-04-17 | Nidec Motor Corporation | Electric motor having fluid circulation system and methods for cooling an electric motor |
DE102011085786A1 (de) | 2011-11-04 | 2013-05-08 | Siemens Aktiengesellschaft | Rutschkupplung mit automatischem Lösen bei anhaltender Überlast |
CN103112458A (zh) * | 2013-01-05 | 2013-05-22 | 西南交通大学 | 电机刚性抱轴无齿轮传动的电机轮对单元 |
US9973049B2 (en) | 2013-03-15 | 2018-05-15 | Techtronic Industries Co. Ltd. | Electric motor |
US9653967B2 (en) | 2013-03-15 | 2017-05-16 | Techtronic Power Tools Technology Limited | Cooling arrangement for an electric motor |
EP2792567B1 (de) | 2013-04-15 | 2015-06-24 | Siemens Aktiengesellschaft | Elektrische Maschine mit Gehäuse über Teilumfang |
CN104417570B (zh) * | 2013-08-23 | 2016-12-28 | 常州长青交通科技股份有限公司 | 轨道车辆轮对电机直驱系统 |
EP3020611A1 (de) | 2014-11-14 | 2016-05-18 | Siemens Aktiengesellschaft | Bahnantrieb mit Bremseinrichtung |
CN104554296B (zh) * | 2014-12-15 | 2017-06-06 | 中车青岛四方机车车辆股份有限公司 | 一种直驱轮对驱动系统及应用该系统的转向架 |
CN104527660B (zh) * | 2014-12-15 | 2017-04-05 | 中车青岛四方机车车辆股份有限公司 | 一种电机直驱转向架 |
DE102015219075A1 (de) * | 2015-10-02 | 2017-04-06 | Robert Bosch Gmbh | Elektrische Maschine, insbesondere permanent- erregte elektrische Maschine, mit einer adhäsiven Fläche zum Anhaften von Fremdpartikeln |
CN105752090A (zh) * | 2016-02-24 | 2016-07-13 | 上海应用技术学院 | 一种铁路独立车轮转向架电气耦合技术 |
EP3511223A1 (de) | 2018-01-16 | 2019-07-17 | Siemens Aktiengesellschaft | Drehgestell eines schienenfahrzeugs |
DE102018216490A1 (de) * | 2018-09-26 | 2020-03-26 | Siemens Mobility GmbH | Läuferrohr für eine elektrische Maschine eines Fahrzeugs |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
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DE31577C (de) * | a. W. adams in St. Louis, Missouri, V. St. A | Neuerung an Elektromotoren für Eisenbahnwagen | ||
US1238292A (en) * | 1915-08-06 | 1917-08-28 | Westinghouse Electric & Mfg Co | Ventilating construction for dynamo-electric machines. |
CA580492A (en) * | 1956-02-14 | 1959-07-28 | M. Potter Frederick | Dynamoelectric machine |
US2991377A (en) * | 1957-01-28 | 1961-07-04 | Vickers Electrical Co Ltd | Cooling of flame proof motors |
US3701911A (en) * | 1971-05-20 | 1972-10-31 | Skf Ind Trading & Dev | Motor bearing support and cooling means |
US3846651A (en) * | 1973-06-12 | 1974-11-05 | Westinghouse Electric Corp | Dynamoelectric machine ventilating system |
BE809690A (fr) | 1974-01-14 | 1974-07-15 | Acec | Bogie a roues elastiques a grande vitesse. |
US3906265A (en) * | 1974-05-15 | 1975-09-16 | Gen Electric | Honeycomb stator inserts for improved generator cooling |
DE2501136A1 (de) * | 1975-01-14 | 1976-07-15 | Hans Hermann Howe | Spanabhebendes werkzeug |
JPS5728541A (en) * | 1980-07-25 | 1982-02-16 | Toshiba Corp | Rotary electric machine |
US4682064A (en) * | 1986-03-31 | 1987-07-21 | General Electric Company | Coolant gas flow separator baffle for a dynamoelectric machine |
DE4137263A1 (de) * | 1991-11-13 | 1993-05-19 | Abb Patent Gmbh | Antriebseinheit fuer schienentriebfahrzeuge |
JPH0833279A (ja) * | 1994-07-20 | 1996-02-02 | Matsushita Electric Ind Co Ltd | ブラシレスモータ |
DE4427760A1 (de) * | 1994-08-05 | 1996-02-08 | Continental Ag | Wanderwellenmotor mit Zylinderläufer |
CN1128425A (zh) * | 1995-04-19 | 1996-08-07 | 福建省仙游汽车无刷电机总厂 | 一种汽车发电机的转子及其制造方法 |
JP3441242B2 (ja) * | 1995-06-15 | 2003-08-25 | 財団法人鉄道総合技術研究所 | 車輪一体形回転電機 |
US5789833A (en) * | 1995-11-24 | 1998-08-04 | Kabushiki Kaisha Toshiba | Totally-enclosed traction motor for electric railcar |
US6426574B1 (en) * | 1996-12-21 | 2002-07-30 | Alstom | Rotor of a turbogenerator having direct gas cooling incorporating a two-stage flow cascade |
US5757094A (en) * | 1997-03-28 | 1998-05-26 | General Electric Canada Inc. | Ventilation system for an AC machine having overhanging salient poles with juxtaposed shrouds |
JPH11255118A (ja) * | 1998-03-10 | 1999-09-21 | Hitachi Ltd | 鉄道車両用駆動装置 |
JP2000308311A (ja) * | 1999-04-14 | 2000-11-02 | Hitachi Ltd | 回転電機 |
JP2002078292A (ja) * | 2000-08-30 | 2002-03-15 | Toyo Electric Mfg Co Ltd | 車両用主電動機 |
DE10047911A1 (de) * | 2000-09-27 | 2002-04-18 | Siemens Ag | Antrieb eines Radsatzes |
DE10122425B4 (de) * | 2001-05-09 | 2006-06-01 | Siemens Ag | Elektrische Maschine |
-
2003
- 2003-09-30 DE DE10345888A patent/DE10345888B4/de not_active Expired - Fee Related
-
2004
- 2004-09-29 WO PCT/EP2004/010901 patent/WO2005032902A1/de active IP Right Grant
- 2004-09-29 EP EP04787054A patent/EP1667883B1/de not_active Expired - Lifetime
- 2004-09-29 US US10/595,250 patent/US7812486B2/en not_active Expired - Fee Related
- 2004-09-29 CN CNB2004800354941A patent/CN100422017C/zh not_active Expired - Fee Related
- 2004-09-29 DE DE502004005042T patent/DE502004005042D1/de not_active Expired - Lifetime
- 2004-09-29 AT AT04787054T patent/ATE373589T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2005032902A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10345888B4 (de) | 2006-11-23 |
CN1886287A (zh) | 2006-12-27 |
DE10345888A1 (de) | 2005-04-28 |
US7812486B2 (en) | 2010-10-12 |
CN100422017C (zh) | 2008-10-01 |
EP1667883B1 (de) | 2007-09-19 |
DE502004005042D1 (de) | 2007-10-31 |
ATE373589T1 (de) | 2007-10-15 |
US20070120428A1 (en) | 2007-05-31 |
WO2005032902A1 (de) | 2005-04-14 |
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