DE933162C - Bearings for electrical machines - Google Patents

Bearings for electrical machines

Info

Publication number
DE933162C
DE933162C DES4404D DES0004404D DE933162C DE 933162 C DE933162 C DE 933162C DE S4404 D DES4404 D DE S4404D DE S0004404 D DES0004404 D DE S0004404D DE 933162 C DE933162 C DE 933162C
Authority
DE
Germany
Prior art keywords
bearing
bearings
electrical machines
insulation
housing
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.)
Expired
Application number
DES4404D
Other languages
German (de)
Inventor
Hubert Sichting
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DES4404D priority Critical patent/DE933162C/en
Application granted granted Critical
Publication of DE933162C publication Critical patent/DE933162C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Description

Bel einem bekannten Lager für elektrische Mascahinen wird die im Lagergehäuse eingebaute Lagerbuchse zum Schutz gegen Lagerströme außen von Isolation umgeben. Bei einer solchen Anordnung der Isolation ist wegen der Nachgiebigkeit der Isolation ein schlechter Sitz der Lagerbuchse die Folge. Insbesondere liegt keine ausreichende Sicherheit gegen Schub in axialer Richtung vor.Bel a well-known bearing for electric mascahinen is the one in the bearing housing Built-in bearing bush to protect against bearing currents surrounded by insulation on the outside. Such an arrangement of the insulation is due to the flexibility of the insulation a poor fit of the bearing bush is the result. In particular, there is not a sufficient one Security against thrust in the axial direction.

Diese Mängel werden gemäß der Erfindung dadurch behoben, daß die Isolation zwischen dem Lagergehäuse und dem dieses. tragenden Lagerschild fest angeordnet wird.These deficiencies are remedied according to the invention in that the insulation between the bearing housing and this. bearing end shield firmly arranged will.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, wobei Fig. I ein Lager im Schitt und Fig. 2 von der Innenseite der Maschine aus gesehen zeigen. Die Welle I einer elektrischen Maschine läuft im Wälzlager :2, das in einem besonderen, z. B. aus, Aluminium bestehenden Gehäuse 3 sitzt. Dieses Gehäuse ist am Lagerschild 4 durch Schrauben befestigt Im vorliegenden Fall ist an das Lagerschild eine Stahleinlage 6 angeschweißt, die dieselbe Form wie das Gehäuse 5 besitzt. Die Stahleinlage ist also im wesentlichen in ihrem Querschnitt kreisförmig. Sie besitzt unten einem durch Rippen 8 gestützten Trager 7, auf welchem der Fuß 9 des Gehäuses 3 ruht. Auf diesem Träger kann das Lager in axialer Richtung verschoben werden, so däß die magnetische Mitte des Läufers genau mit der magnetischen, Mitte des Ständers in Übereinstimmung gebracht werden kann. Durch unter den Fuß 9 gelegte Zwischenstücke kann das Lager in radialer Richtung verstellt und damit eine genaue Zentrierung der Welle erreicht werden. Gemäß der Erfindung ist zwischen dem Gehäuse 3 und dem Lagerschild 4 eine elektrischer Isodierkörper I o bzw. I I vorgesehen, um zu verhindern, daß Lagerströme vom Lager zum Lagerschild fließen. Trotz der Verwendung einer Isolation gegen Lagerströme wird also hier eine ausreichende Sicherung des Lagers, insbesondere des äußeren Laufringes des Wälzlagers, erreicht.In the drawing, an embodiment of the invention is shown, FIG. 1 showing a bearing in section and FIG. 2 showing the inside of the machine seen show. The shaft I of an electrical machine runs in the roller bearing: 2, that in a special, z. B. from, aluminum existing housing 3 sits. This case is attached to the end shield 4 by screws. In the present case, it is attached to the end shield a steel insert 6 welded on, which has the same shape as the housing 5. the Steel insert is therefore essentially circular in cross section. she owns below a support 7 supported by ribs 8, on which the foot 9 of the housing 3 rests. The bearing can be moved in the axial direction on this carrier, so that the magnetic center of the rotor exactly matches the magnetic center of the stator can be reconciled. Through intermediate pieces placed under the foot 9 the bearing can be adjusted in the radial direction and thus precise centering of the wave can be achieved. According to the invention is between the housing 3 and the End shield 4 an electrical insulating body I o or I I is provided to prevent that bearing currents flow from the bearing to the end shield. Despite the use of insulation A sufficient safeguard of the bearing, in particular, is thus provided here against bearing currents of the outer race of the rolling bearing.

Claims (1)

PATENTANSPRUCH: Lager für elektrische Maschinen mit einer Iso laition gegen Lagerströme, dadurch gekennzeichnet, daß die Isolation zviischen dem Lagergehäuse (3) und denn, dieses. tragenden Lagerschild (4) fest angeordnet ist. Angezogene .Druckschriften: Deutsche Patentschriften Nr. 404 188, 420 401, 718 216; schweizerische Patentschrift Nr. 196 445.PATENT CLAIM: Bearings for electrical machines with an insulation against bearing currents, characterized in that the insulation between the bearing housing (3) and then, this. bearing end shield (4) is fixedly arranged. Dressed .Druckschriften: German Patent Nos. 404 188, 420 401, 718 216; Swiss Patent No. 196 445.
DES4404D 1937-06-08 1937-06-08 Bearings for electrical machines Expired DE933162C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES4404D DE933162C (en) 1937-06-08 1937-06-08 Bearings for electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES4404D DE933162C (en) 1937-06-08 1937-06-08 Bearings for electrical machines

Publications (1)

Publication Number Publication Date
DE933162C true DE933162C (en) 1955-09-22

Family

ID=7470699

Family Applications (1)

Application Number Title Priority Date Filing Date
DES4404D Expired DE933162C (en) 1937-06-08 1937-06-08 Bearings for electrical machines

Country Status (1)

Country Link
DE (1) DE933162C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178144B (en) * 1962-02-16 1964-09-17 Licentia Gmbh Arrangement for preventing bearing currents in high-performance electrical machines, especially in connection with piston machines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE404188C (en) * 1924-10-13 Siemens Schuckertwerke G M B H Centering of a bearing plate of an electrical machine that is insulated from the bearing housing
DE420401C (en) * 1921-12-23 1925-10-23 Friedrich August Becker Dipl I DC or AC machine of unipolar design that can be used as a generator, motor, converter and voltage divider
CH196445A (en) * 1936-07-13 1938-03-15 Siemens Ag Noise and current insulated rolling bearings for electrical machines.
DE718216C (en) * 1939-06-24 1942-03-06 Himmelwerk Ag Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE404188C (en) * 1924-10-13 Siemens Schuckertwerke G M B H Centering of a bearing plate of an electrical machine that is insulated from the bearing housing
DE420401C (en) * 1921-12-23 1925-10-23 Friedrich August Becker Dipl I DC or AC machine of unipolar design that can be used as a generator, motor, converter and voltage divider
CH196445A (en) * 1936-07-13 1938-03-15 Siemens Ag Noise and current insulated rolling bearings for electrical machines.
DE718216C (en) * 1939-06-24 1942-03-06 Himmelwerk Ag Device to prevent the lowering of the useful brush voltage of DC cross-field machines when idling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1178144B (en) * 1962-02-16 1964-09-17 Licentia Gmbh Arrangement for preventing bearing currents in high-performance electrical machines, especially in connection with piston machines

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