DE1059096B - Shaft feed-through for flameproof electrical machines - Google Patents
Shaft feed-through for flameproof electrical machinesInfo
- Publication number
- DE1059096B DE1059096B DES58592A DES0058592A DE1059096B DE 1059096 B DE1059096 B DE 1059096B DE S58592 A DES58592 A DE S58592A DE S0058592 A DES0058592 A DE S0058592A DE 1059096 B DE1059096 B DE 1059096B
- Authority
- DE
- Germany
- Prior art keywords
- shaft
- shaft bushing
- intermediate ring
- bushing according
- sleeve
- 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.)
- Pending
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
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/136—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas explosion-proof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/24—Protection against failure of cooling arrangements, e.g. due to loss of cooling medium or due to interruption of the circulation of cooling medium
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Support Of The Bearing (AREA)
Description
Wellendurchführung für druckfest gekapselte elektrische Maschinen Bei druckfest gekapselten elektrischen Maschinen muß die Herausführung der Welle aus dem Gehäuse so beschaffen sein, daß sich eine im Gehäuse stattfindende Explosion nicht nach außen fortpflanzen kann. Der Spalt an der Durchführungsstelle muß daher eine bestimmte Länge haben und darf eine bestimmte Weite nicht überschreiten. Meist wird dieser Spalt durch einen Lagerdeckel oder durch eine an einem festen Gehäuseteil zentrierte Büchse und die Welle gebildet. Infolge der verhältnismäßig großen Länge und der sehr kleinen Weite des Spaltes treten schon bei sehr geringen Ungenauigkeiten der Bearbeitung leicht Verklemmungen ein, außerdem ist die Montage dieser Durchführungen sehr schwierig.Shaft bushing for flameproof electrical machines In the case of flameproof encapsulated electrical machines, the shaft must from the housing must be such that an explosion takes place in the housing cannot reproduce externally. The gap at the implementation point must therefore have a certain length and must not exceed a certain width. Most of time this gap is created by a bearing cover or by a fixed part of the housing centered sleeve and the shaft formed. Due to the relatively great length and the very small width of the gap occur even with very minor inaccuracies the processing easily jamming, and the assembly of these bushings very difficult.
Die Erfindung beseitigt diese Schwierigkeiten. Erfindungsgemäß ist die Welle von einer nicht umlaufenden Büchse umschlossen, die mit zwei sehr schmalen Ringflächen auf der Welle zentriert und am Maschinengehäuse derart befestigt ist, daß sie sich sowohl in einer Ebene senkrecht zur Wellenachse frei einstellen als auch um einen Punkt der Wellenachse frei drehen kann. Eine zweckmäßige Ausführung ergibt sich, wenn die Wellenbüchse mit einer kugeligen Außenfläche in einem Zwischenring sitzt, der sich mit einer seiner Stirnseite an eine mit dem Motorgehäuse fest verbundenen Platte anlegt.The invention overcomes these difficulties. Is according to the invention the shaft enclosed by a non-rotating sleeve, the two with two very narrow ones Ring surfaces centered on the shaft and attached to the machine housing in such a way that that they adjust freely both in a plane perpendicular to the shaft axis as can also rotate freely around a point on the shaft axis. An expedient execution arises when the shaft sleeve with a spherical outer surface in an intermediate ring sits, which is firmly connected with one of its front side to a with the motor housing Plate in place.
Es ist bei Lagern an sich bekannt, die Lagerbuchsen mit einer kugeligen Außenfläche auszuführen, um eine Selbsteinstellung der Lager zu ermöglichen.It is known in the case of bearings that the bearing bushes have a spherical shape Execute outer surface to enable self-adjustment of the bearings.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Sie zeigt das Lager einer druckfest gekapselten elektrischen Maschine im Längsschnitt.An embodiment of the invention is shown in the drawing. It shows the bearing of a flameproof electrical machine in a longitudinal section.
Die Welle 1 ist mittels des Kugellagers 2 in dem Lagerschild 3 gelagert. Nach außen ist der Lagerraum durch den äußeren Lagerdeckel 4 abgeschlossen. Auf der dem Maschineninneren zugekehrten Seite des Lagers ist eine Durchführungsbüchse 5 aus Bronze angeordnet, die mittels zweier sehr schmaler Ringflächen 6 auf der Welle 1 zentriert sind. Zwischen diesen beiden Ringflächen bildet die Büchse mit der Welle einen Luftspalt 7, der etwa 0,1 mm beträgt. Die Außenfläche 8 der Büchse ist nach einer Kugel geformt, deren Mittelpunkt im Schnittpunkt einer durch die Stirnfläche 9 der Büchse gelegten Ebene mit der Achse 10 der Welle liegt. Die Durchführungsbüchse 5 ist von einem Zwischenring 11 umgeben, der eine entsprechende kugelige Bohrung 12 besitzt. Diese innere Büchse liegt an dem inneren Lagerdeckel 13 an, an dem ein Abschlußdeckel 14 befestigt ist. Zwischen diesem Abschlußdeckel 14 und dem Zwischenring 11 sind, am Umfang gleichmäßig verteilt, Federn 15 und zwischen dem Abschlußdeckel 14 und der inneren Büchse 5, ebenfalls am Umfang gleichmäßig verteilt, Federn 16 angeordnet. Außerdem ist die Büchse 5 an im Abschlußdeckel 14 befestigten Bolzen 17 geführt.The shaft 1 is mounted in the end shield 3 by means of the ball bearing 2. The storage space is closed to the outside by the outer bearing cover 4. on the side of the bearing facing the inside of the machine is a bushing 5 arranged made of bronze, which by means of two very narrow annular surfaces 6 on the Shaft 1 are centered. The bushing forms between these two ring surfaces the shaft an air gap 7, which is about 0.1 mm. The outer surface 8 of the can is shaped like a sphere, the center of which is at the intersection of a through the End face 9 of the sleeve laid plane with the axis 10 of the shaft. The bushing 5 is surrounded by an intermediate ring 11 which has a corresponding spherical bore 12 owns. This inner sleeve rests against the inner bearing cap 13 on which a End cover 14 is attached. Between this cover 14 and the intermediate ring 11 are, evenly distributed around the circumference, springs 15 and between the cover plate 14 and the inner sleeve 5, also evenly distributed around the circumference, springs 16 arranged. In addition, the sleeve 5 is fastened to bolts in the end cover 14 17 led.
Dadurch, daß die Durchführungsbüchse mittels sehr schmaler Ringflächen auf der Welle zentriert ist, stellt sie sich bei der Montage von selbst in die richtige Lage ein, so daß zeitraubende Montagearbeiten und Verklemmungen vermieden werden. Nach einer entsprechenden Laufzeit werden sich die die schmalen Ringflächen bildenden Ansätze der Büchse abschleifen und wird sich ein durchgehender Spalt bilden.The fact that the bushing by means of very narrow annular surfaces is centered on the shaft, it will position itself in the correct position during assembly Position so that time-consuming assembly work and deadlocks are avoided. After a corresponding period of time, the narrow ring surfaces will be formed Sand off the shoulders of the liner and a continuous gap will form.
Claims (5)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES58592A DE1059096B (en) | 1958-06-13 | 1958-06-13 | Shaft feed-through for flameproof electrical machines |
| CH7392959A CH376995A (en) | 1958-06-13 | 1959-06-03 | Bushing on the shaft bearing of an encapsulated electrical machine |
| BE579610A BE579610A (en) | 1958-06-13 | 1959-06-12 | Feed-through for the passage of the shaft in the explosion-proof shielded electrical machines. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES58592A DE1059096B (en) | 1958-06-13 | 1958-06-13 | Shaft feed-through for flameproof electrical machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1059096B true DE1059096B (en) | 1959-06-11 |
Family
ID=7492652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES58592A Pending DE1059096B (en) | 1958-06-13 | 1958-06-13 | Shaft feed-through for flameproof electrical machines |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1059096B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1418658A2 (en) | 2002-11-09 | 2004-05-12 | Ab Skf | Explosion-proof housing |
| CN108616188A (en) * | 2016-12-12 | 2018-10-02 | 西门子公司 | Explosion separation motor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1799071A (en) * | 1928-04-27 | 1931-03-31 | Allis Louis Co | Dynamo-electric machine |
| DE611681C (en) * | 1935-04-02 | Sachsenwerk Licht & Kraft Ag | Labyrinth-like gap seal between the encapsulation of electrical machines or devices, in which sparks can be generated during operation, and the shaft leading out of this capsule | |
| DE679655C (en) * | 1937-11-25 | 1939-08-10 | Sachsenwerk Licht & Kraft Ag | Explosive, flameproof encapsulated electrical machine |
| FR919854A (en) * | 1946-01-08 | 1947-03-20 | Electrolux Ab | Improvements to bearings for electric motor rotor shafts and other applications |
| DE830365C (en) * | 1948-10-02 | 1952-02-04 | Siemens Schuckertwerke A G | Self-aligning plain bearings for electrical machines |
| AT170767B (en) * | 1945-04-23 | 1952-03-25 | Singer Mfg Co | Electric motor |
| US2644099A (en) * | 1946-08-15 | 1953-06-30 | Westinghouse Electric Corp | Explosion-resistant motor |
| DE939882C (en) * | 1953-10-17 | 1956-03-08 | Steidinger K G Geb | Housing for electric motors |
| CH324513A (en) * | 1953-12-18 | 1957-09-30 | Stamicarbon | Electric motor built into an explosion-proof housing |
-
1958
- 1958-06-13 DE DES58592A patent/DE1059096B/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE611681C (en) * | 1935-04-02 | Sachsenwerk Licht & Kraft Ag | Labyrinth-like gap seal between the encapsulation of electrical machines or devices, in which sparks can be generated during operation, and the shaft leading out of this capsule | |
| US1799071A (en) * | 1928-04-27 | 1931-03-31 | Allis Louis Co | Dynamo-electric machine |
| DE679655C (en) * | 1937-11-25 | 1939-08-10 | Sachsenwerk Licht & Kraft Ag | Explosive, flameproof encapsulated electrical machine |
| AT170767B (en) * | 1945-04-23 | 1952-03-25 | Singer Mfg Co | Electric motor |
| FR919854A (en) * | 1946-01-08 | 1947-03-20 | Electrolux Ab | Improvements to bearings for electric motor rotor shafts and other applications |
| US2644099A (en) * | 1946-08-15 | 1953-06-30 | Westinghouse Electric Corp | Explosion-resistant motor |
| DE830365C (en) * | 1948-10-02 | 1952-02-04 | Siemens Schuckertwerke A G | Self-aligning plain bearings for electrical machines |
| DE939882C (en) * | 1953-10-17 | 1956-03-08 | Steidinger K G Geb | Housing for electric motors |
| CH324513A (en) * | 1953-12-18 | 1957-09-30 | Stamicarbon | Electric motor built into an explosion-proof housing |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1418658A2 (en) | 2002-11-09 | 2004-05-12 | Ab Skf | Explosion-proof housing |
| EP1418658A3 (en) * | 2002-11-09 | 2006-09-06 | Ab Skf | Explosion-proof housing |
| CN108616188A (en) * | 2016-12-12 | 2018-10-02 | 西门子公司 | Explosion separation motor |
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