• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a fixing element (11) for fixing the rotor shaft (4) of an electric machine (1) to the stator (6), with a punch (12) for pressing against the rotor shaft (4), which punch (12) of thermoplastic Plastic exists. The invention further relates to an electric machine (1), in particular an electric traction machine, for arrangement in a bogie (2) of a rail vehicle (3), having a rotor (5), which is connected in a rotationally fixed manner to a rotor shaft (4), a stator (6). and bearing shields (7, 8) arranged on both sides, comprising bearings (9, 10) for rotatably receiving the rotor shaft (4) with at least one such fixing element (11). The punch (12) consists of a deformable below 100 ° C plastic, so that rotation of the rotor shaft (4) relative to the stator (6) is made possible against resistance.
    公开号:AT520949A1
    申请号:T50183/2018
    申请日:2018-03-06
    公开日:2019-09-15
    发明作者:
    申请人:Traktionssysteme Austria Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a fixing element for fixing the rotor shaft of an electrical machine, in particular an electrical traction machine, to its stator.
    The present invention also relates to an electrical machine, in particular an electrical traction machine, for arrangement in a bogie of a rail vehicle, with a rotor connected in a rotationally fixed manner to a rotor shaft, a stator and bearing plates arranged on both sides containing the bearings for the rotatable reception of the rotor shaft.
    When electrical machines are transported, vibrations of the stationary rotor in relation to the stator can result in minor damage to the bearings, which are referred to as so-called standstill marks. While minor damage caused by the impact of the rolling element on the bearing ring has no or only minor effects, larger or many such standstill marks can lead to noise development or even damage or even total failure of the bearing. The replacement of the shaft bearings requires corresponding maintenance work during which the electrical machine or the device equipped with the electrical machine is not available.
    Particularly in the case of traction machines for rail vehicles, the electrical machine can be transported to the place of manufacture where it is installed in a bogie, and when the bogie is transported to the place where the bogie is installed in the vehicle body, and when the finished rail vehicle is transported the respective location of such bearing damage. To avoid bearing damage, fixing screws are used, which prevent the rotor shaft from moving relative to the stator. A disadvantage of such fixing screws is that manipulation, for example a movement of the bogie or the finished rail vehicle, is only possible after the fixing screws have been loosened, since otherwise the electrical machine will be blocked. The solution to the fixation is particularly complex, time-consuming and costly, in particular when the electrical machine is already installed in the bogie or when the bogie is already mounted in the rail vehicle. For this reason, the / 16
    Provision of a transport lock during the manufacturing process in a vehicle is dispensed with, which in turn can lead to the bearing damage mentioned above.
    The object is to provide an above-mentioned fixing element and an electrical machine with such a fixing element, through which the highest possible protection of the bearings can be achieved when transporting the stationary electrical machine, but at the same time manipulating the electrical machine of a bogie with such electrical machines or a rail vehicle with such bogies is facilitated or enabled. The effort for the assembly of the fixing element should be as low as possible. Disadvantages of known devices should be avoided or at least reduced.
    The object according to the invention is achieved by an above-mentioned fixing element, a stamp being provided for pressing against the rotor shaft, which stamp is made of thermoplastic material. This measure ensures that, on the one hand, the rotor shaft can be adequately fixed with respect to the stator by applying appropriate force to the rotor shaft via the stamp of the fixing element. On the other hand, the use of the thermoplastic material for the stamp enables the rotor shaft to rotate with respect to the stator against resistance. Finally, the thermoplastic deformation of the stamp leads to an automatic release of the fixing element when the rotor shaft rotates relative to the stator when the bogie or rail vehicle is moving. Due to this quasi-automatic resolution of the stamp of the fixing element when the electrical machine moves against the resistance of the fixing element, it is not absolutely necessary to remove the fixing element before the rail vehicle is put into operation, and it is always possible to provide optimum protection for the electrical machine or its bearings while at the same time Prevention of damage can be achieved by fixing elements that have not been removed.
    The stamp preferably consists of plastic which is deformable below 100 ° C. The use of such plastics ensures that if the electrical machine is manipulated by the friction between the stamp and the rotor shaft, the deformation temperature at which the stamp is deformed is quickly achieved. Deformation of the rotor shaft, which is usually made of steel, is prevented.
    The stamp preferably consists of a non-toxic and essentially residue-free meltable material. This can lead to a residue-free dissolution of the stamp if the bogie or the rail vehicle is moved after the electrical machine has been installed.
    If the stamp is adapted to the shape of that part of the rotor shaft to which the stamp can be pressed, the force required for fixing the rotor shaft in relation to the stator can be optimally transmitted. When the fixing element is used in the radial direction on the jacket of the rotor shaft, the stamp can have a partially cylindrical shape, whereas if the stamp is used axially at the end of the rotor shaft, a flat surface of the stamp will be advantageous.
    The stamp can be produced in a 3D printing process. In this way, the stamp can be easily and inexpensively formed as part of the fixing element.
    The fixing element is formed, for example, by a screw with a lock nut, on the free end of which the stamp is arranged. The screw with lock nut is attached to a suitable point on the electrical machine, for example on the end shield or on other components.
    The object according to the invention is also achieved by an electrical machine mentioned above, in which at least one fixing element described above is arranged between the stator and the rotor shaft. For the advantages that can be achieved in this way, reference is made to the above description in connection with the fixing element.
    For example, at least one fixing element is arranged radially so that the stamp can be pressed onto the jacket of the rotor shaft. In this case, the stamp will be adapted to the shape and location at which it is pressed against the rotor shaft, e.g. have a partially cylindrical shape.
    Alternatively or in addition, at least one fixing element can also be arranged axially, so that the plunger can be pressed onto an axial end of the rotor shaft. The advantage of the axial arrangement of the fixing element is the simpler assembly and disassembly, since the axial ends of the electrical machine are usually more easily accessible than is the case with a radial arrangement.
    According to one embodiment of the electrical machine, two fixing elements are arranged axially on both sides of the rotor shaft, so that the punches can be pressed onto both axial ends of the rotor shaft. This measure results in an even better fixation of the rotor shaft with respect to the stator to protect the bearings during the transport of the non-rotating electrical machine.
    The present invention is explained in more detail with reference to the accompanying drawings. Show in it
    1 shows a schematic diagram of a rail vehicle with bogies and electrical machines arranged therein;
    2 shows a sectional view through an electrical machine with an embodiment of a transport lock according to the invention in the form of a fixing element;
    3 shows a detailed view of an embodiment of the fixing element in an enlarged representation; and
    Fig. 4 is a detailed view of another embodiment of a fixing element in an enlarged view.
    1 shows a basic illustration of a rail vehicle 3 with a bogie 2 and electrical machines 1 arranged therein. A fixing element 11 is arranged in the electrical machine 1, which fixes the rotor shaft 4 of the electrical machine 1 relative to the stator 6 around the bearing 9 the drive side AS and the bearing 10 on the non-drive side NAS / 16 from damage. This makes it possible to safely transport the electrical machine 1 to the place of installation in a bogie and finally to the place of installation of the bogie 2 with the built-in electrical machine 1 in the rail vehicle. If you forget to loosen the fixing elements 11 in the electrical machines 1 before the start of the rail vehicle 3 or the movement of the bogies 2 or if this is done deliberately, the fixing is automatically released by the plastic deformation of the stamp 12 of the fixing element 11, and the movement of the bogie 2 or the rail vehicle 3 against the resistance of the fixing element 11.
    2 shows a sectional view through an electrical machine 1 with an embodiment of a transport lock according to the invention in the form of a fixing element 11. The electrical machine 1 contains a rotor shaft 4, which is connected in a rotationally fixed manner to the rotor 5, which rotates with respect to the stator 6. Corresponding bearings 9 and 10 for rotatably receiving the rotor shaft 4 are arranged on both sides of the rotor shaft 4 in the bearing plate 7 on the drive side AS and bearing plate 8 on the non-drive side NAS. If the electrical machine 1 is transported with the rotor 5 at a standstill, vibrations and impacts of the rotor shaft 4 with respect to the stator 6 can damage the bearings 9, 10, which cause a change in the surface structure of the bearings 9, 10. Such standstill marks in the bearings 9, 10 can result in noise, bearing damage or even total engine damage.
    According to the invention, a fixing element 11 is provided for fixing the rotor shaft 4 of the electrical machine 1 relative to its stator 6, which has a stamp 12 for pressing against the rotor shaft 4, which is made of thermoplastic material. The stamp 12 is preferably formed from a plastic that is deformable below 100 ° C., preferably polylactate. The fixing element 11 can include a screw 13 and a lock nut 14, on the free end 15 of which the stamp 12 is arranged. The fixing element 11 is fastened to the bearing plate 8 by means of the screw 13 and the lock nut 14. The plunger 12 made of thermoplastic material is pressed against the axial end / 16 of the rotor shaft 4. If the rotor shaft 4 is now rotated against the resistance of the fixing element 11 with respect to the stator 6, the friction between the axial end 16 of the rotor shaft 4 and the plunger 12 leads to heat which leads to a deformation of the plunger 12 and preferably to a residue-free one Melting the material of the stamp 12 leads. Damage to the electrical machine 1 can thereby also be prevented if it is forgotten to loosen the fixing element 11 or this is even done consciously.
    The stamp 12 can be adapted to the shape of the part of the rotor shaft 4 to which the stamp 12 is pressed. The stamp 12 is preferably produced from the suitable thermoplastic material in a 3D printing process.
    Of course, a transport fixation can also be carried out with a plurality of fixing elements 11, for example fixing elements 11 arranged axially on both sides, on the drive side AS and non-drive side NAS of the electrical machine 1.
    3 shows a detailed view of an embodiment of the fixing element 11 in an enlarged view. In this illustration, as described in FIG. 2, the plunger 12 of the fixing element 11 is pressed against the axial end 16 of the rotor shaft 4 or against a corresponding element connected to the end 16 of the rotor shaft 4, and the rotor shaft 4 is thereby fixed against one another the stator 6 and protection of the bearing 10 causes.
    Finally, FIG. 4 shows a detailed view of a further embodiment of a fixing element in an enlarged view. In this embodiment variant, the fixing element 11 is arranged in such a way that the plunger 12 can be pressed against the outer surface of the rotor shaft 4 at its end and the rotor shaft 4 can be fixed relative to the stator 6 and thus protection of the bearing 10 can be achieved. As already in the exemplary embodiments according to FIGS. 2 and 3, the fixing element 11 also includes a screw 13 and a lock nut 14, the punch 12 being arranged at the free end 15 of the screw 13.
    / 16
    The present invention is characterized by particular simplicity but at the same time optimal protection of the electrical machine 1 against bearing damage.
    / 16
    claims:
    1. Fixing element (11) for fixing the rotor shaft (4) of an electrical machine (1) to its stator (6), characterized in that a stamp (12) for pressing against the rotor shaft (4) is provided, which stamp (12 ) consists of thermoplastic.
    2. Fixing element (11) according to claim 1, characterized in that the stamp (12) consists of plastic deformable below 100 ° C.
    3. Fixing element (11) according to claim 1 or 2, characterized in that the stamp (12) consists of a non-toxic and essentially residue-free meltable material.
    4. Fixing element (11) according to one of claims 1 to 3, characterized in that the stamp (12) is adapted to the shape of that part of the rotor shaft (4) to which the stamp (12) can be pressed.
    5. Fixing element (11) according to one of claims 1 to 4, characterized in that the stamp (12) is produced in the 3D printing process.
    6. Fixing element (11) according to one of claims 1 to 5, characterized by a screw (13) with lock nut (14), at the free end (15) of which the stamp (12) is arranged.
    7. Electrical machine (1), in particular electrical traction machine for arrangement in a bogie (2) of a rail vehicle (3), with a rotor (5) non-rotatably connected to a rotor shaft (4), a stator (6) and arranged on both sides Bearing shields (7, 8) containing the bearings (9, 10) for rotatably receiving the rotor shaft (4), characterized in that at least one fixing element (11) according to one of claims 1 to 6 between the stator (6) and the rotor shaft (4 ) is arranged.
    8. Electrical machine (1) according to claim 7, characterized in that at least one fixing element (11) is arranged radially / 16 net, so that the stamp (12) can be pressed onto the jacket of the rotor shaft (4).
    9. Electrical machine (1) according to claim 7 or 8, characterized in that at least one fixing element (11) is arranged axially, so that the plunger (12) can be pressed onto an axial end (16) of the rotor shaft (4).
    10. Electrical machine (1) according to one of claims 7 to 9, characterized in that on both sides of the rotor shaft (4) two fixing elements (11) are arranged axially, so that the stamp (12) on both axial ends (16, 16 ') the rotor shaft (4) can be pressed.
    / 16
    1.3
    / 16
    2.3
    12/16
    3/3 /
    Fig. 3 /
    / 16
    Search report for A 50183/2018 Austrian Patent Office
    Classification of the subject of the application according to IPC:Fl6C 41/04 (2006.01); H02K 7/102 (2006.01); H02P3 / 04 (2006.01) Classification of the application according to CPC:F16C 41/04 (2017.08); F16D 2200/0034 (2013.01); H02K 7/102 (2013.01); H02P3 / 04 (2013.01) Researched test substance (classification):F16C, H02K, H02P, F16D Y10T403 / 1608, 3J217 / JC03 Consulted online database:EPODOC, FULLTEXT, PATENW, PATDEW This search report was prepared for claims 1-10 filed on March 6, 2018. Category*) Title of the publication:Country code, publication number, document type (applicant), publication date, text or figure if necessary Concerningclaim XAXAAAAA EP 2743510 Al (MITSUBISHI HEAVY IND COMPRESSOR CORP)June 18, 2014 (June 18, 2014)Fig. 8, paragraphs [0003], [0023], [0061], [0062]JP 2003090366 A (TOYOTA MOTOR CORP) March 28, 2003 (March 28, 2003)1, abstract, paragraphs [0002], [0005], [0011], [0019]DE 202015107053 Ul (DEWERTOKIN GMBH) February 01, 2016 (February 01, 2016)Fig. Lb, 3c, 7, paragraphs [0003], [0010], [0038] - [0040],[0045], [PE46], [0048], [0051], [0053], claims 1,10EP 1093214 A2 (DEWERT ANTRIEBS SYSTEMTECH) April 18, 2001 (April 18, 2001)2, summary, paragraphs [0002] - [0004], [0011],[0013]JP S60131045 A (CANON KK) July 12, 1985 (July 12, 1985)Fig. 3-8, figure description: elastic body 13e ... such as rubber, tip 20a ... rubberCN 106059189 A (CRRC YONGJI ELECTRIC CO LTD) October 26, 2016 (October 26, 2016)Fig. 2, paragraph [0014]JP 2014204594 A (TOSHIBA MITSUBISHI ELEC INC)October 27, 2014 (October 27, 2014)Fig. 1, 2, abstractDE 1167967 B (BBC BROWN BOVERI) April 16, 1964 (April 16, 1964)Figures, column 2, lines 45-52 (using an intermediate layer), claims 1, 3 1, 3-62, 31, 3-5, 7, 81, 4, 7, 81, 7, 97, 81, 6-81, 7, 8 Date of completion of the search: "... , Auditors (in):19.10.2018 be Ί from Ί EHRENDORFER Kurt *> Categories of the listed documents: A publication that defines the general state of the art.X Publication of special importance: the application P document that is of importance (categories X or Y), but afterobject cannot be published as new or published on the priority date of the registration solely due to this publication,inventive activity can be considered based. E Document of particular importance (Category X) from whichY Publication of importance: the subject of the application may not result in an "older right" (earlier filing date, howevernovelty would be considered as based on inventive step, if the republished, protection is possible in AustriaMake publication with one or more other publications),is associated with this category and this connection for & publication which is a member of the same patent family.is obvious to a specialist.
    14/16
    权利要求:
    Claims (8)
    [1]
    claims:
    1. Fixing element (11) for fixing the rotor shaft (4) of an electrical machine (1) to its stator (6), with a stamp (12) for pressing against the rotor shaft (4), which stamp (12) consists of thermoplastic material , characterized in that the plunger (12) consists of plastic which can be deformed below 100 ° C., so that rotation of the rotor shaft (4) relative to the stator (6) against resistance is made possible.
    [2]
    2. Fixing element (11) according to claim 1, characterized in that the stamp (12) is adapted to the shape of that part of the rotor shaft (4) to which the stamp (12) can be pressed.
    [3]
    3. Fixing element (11) according to claim 1 or 2, characterized in that the stamp (12) is produced in the 3D printing process.
    [4]
    4. Fixing element (11) according to one of claims 1 to 3, characterized by a screw (13) with a lock nut (14), the stamp (12) being arranged at the free end (15) of the screw (13).
    [5]
    5. Electrical machine (1), in particular electrical traction machine for arrangement in a bogie (2) of a rail vehicle (3), with a rotor (5) connected in a rotationally fixed manner to a rotor shaft (4), a stator (6) and arranged on both sides Bearing shields (7, 8) containing the bearings (9, 10) for rotatably receiving the rotor shaft (4), characterized in that at least one fixing element (11) according to one of Claims 1 to 4 between the stator (6) and the rotor shaft (4 ) is arranged.
    [6]
    6. Electrical machine (1) according to claim 5, characterized in that at least one fixing element (11) is arranged radially, so that the plunger (12) can be pressed onto the jacket of the rotor shaft (4).
    [7]
    7. Electrical machine (1) according to claim 5 or 6, characterized in that at least one fixing element (11) is arranged axially, so that the stamp (12) on an axial end (16) [LAST CLAIMS].
    15/16
    A 50183/2018 the rotor shaft (4) can be pressed.
    [8]
    8. Electrical machine (1) according to one of claims 5 to 7, characterized in that on both sides of the rotor shaft (4) two fixing elements (11) are arranged axially, so that the stamp (12) on both axial ends (16, 16 ') the rotor shaft (4) can be pressed.
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    同族专利:
    公开号 | 公开日
    EP3537573A1|2019-09-11|
    AT520949B1|2019-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1167967B|1962-06-08|1964-04-16|Bbc Brown Boveri & Cie|Device for protecting roller bearings of electrical machines against damage in transit by means of a bracket|
    JPS60131045A|1983-12-20|1985-07-12|Canon Inc|Motor unit having dynamic fluid bearing|
    EP1093214A2|1999-10-15|2001-04-18|Dewert Antriebs- und Systemtechnik GmbH & Co. KG|Linear drive|
    JP2003090366A|2001-09-20|2003-03-28|Toyota Motor Corp|Disc brake rotor|
    EP2743510A1|2011-08-08|2014-06-18|Mitsubishi Heavy Industries Compressor Corporation|Jig used in rotary machine and method for transporting rotary machine|
    JP2014204594A|2013-04-08|2014-10-27|東芝三菱電機産業システム株式会社|Motor and transport protection device and transport protection method thereof|
    DE202015107053U1|2015-07-28|2016-02-01|Dewertokin Gmbh|Braking device for an electric drive motor|
    CN106059189A|2016-07-27|2016-10-26|中车永济电机有限公司|Single bearing structured heavy-duty locomotive traction motor|DE102020124151A1|2020-09-16|2022-03-17|Schaeffler Technologies AG & Co. KG|Electrical machine and method for manufacturing and assembling an electrical machine|DE1114576B|1959-08-18|1961-10-05|Continental Elektro Ind Ag|Protection of roller bearings of electrical machines during transport and during long breaks|
    DE1166350B|1962-06-08|1964-03-26|Bbc Brown Boveri & Cie|Arrangement for the protection of roller bearings of electrical machines against damage during transport by means of a clamping ring|
    DE1933812A1|1969-06-27|1971-03-11|Licentia Gmbh|Transport lock for rotating machines|
    DE19836191B4|1998-08-10|2004-10-14|Ina-Schaeffler Kg|Fastening device for a pulley|
    US7857578B2|2007-07-13|2010-12-28|Pratt & Whitney Canada Corp.|Preloading brace for gas turbine engine transportation|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT501832018A|AT520949B1|2018-03-06|2018-03-06|Fixing element for fixing the rotor shaft of an electric machine to the stator, and electric machine with such a fixing element|AT501832018A| AT520949B1|2018-03-06|2018-03-06|Fixing element for fixing the rotor shaft of an electric machine to the stator, and electric machine with such a fixing element|
    EP19160734.0A| EP3537573A1|2018-03-06|2019-03-05|Fixing element for fixing the rotor shaft of an electric machine to the stator and electric machine comprising such a fixing element|
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