DE933162C - Bearings for electrical machines - Google Patents
Bearings for electrical machinesInfo
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/173—Means 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
- H02K5/1732—Means 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)
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)
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)
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 |
-
1937
- 1937-06-08 DE DES4404D patent/DE933162C/en not_active Expired
Patent Citations (4)
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)
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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