CH345771A - Shaft bearings in rotary machines - Google Patents
Shaft bearings in rotary machinesInfo
- Publication number
- CH345771A CH345771A CH345771DA CH345771A CH 345771 A CH345771 A CH 345771A CH 345771D A CH345771D A CH 345771DA CH 345771 A CH345771 A CH 345771A
- Authority
- CH
- Switzerland
- Prior art keywords
- elastic carrier
- inner ring
- ring
- rotary machines
- shaft bearings
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
- F16C27/045—Ball or roller bearings, e.g. with resilient rolling bodies with a fluid film, e.g. squeeze film damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
Description
Wellenlagerung in Rotationsmaschinen Bei Maschinen mit starrer Wellenlagerung in Wälzlagern, welche den von aussen bewirkten oder durch mangelnde Auswuchtung des Rotors verur sachten Erschütterungen ausgesetzt sind, tritt oft eine übermässige Abnutzung der Wälzlager oder sogar eine vorzeitige Vernichtung derselben ein.
Die Mängel einer solchen Lagerung werden durch die Lagerung nach der vorliegenden Erfindung be seitigt, wobei das Lager vermittels eines Innenringes auf einem elastischen Träger ruht, der zwischen dem Innenring und einem Aussenring eingelegt ist. Der elastische Träger gestattet eine begrenzte Radial bewegung der Welle und bewirkt eine vollkommene oder teilweise Verhinderung der Übertragung von Stössen auf das Lager. Der Aussenumfang des Innen ringes und der Innenumfang des Aussenringes sind zweckmässig mit Vorsprüngen versehen, die gegen einander um eine halbe Teilung versetzt sind.
Zwischen den Ringen und -dem elastischen Träger befindet sich vorteilhaft eine dünne Ölschicht, deren Dicke sich bei der Deformation des elastischen Trä gers ändert und dadurch eine Abdämpfung .der Vi- brationen bewirkt. Der elastische Träger kann in Form eines offenen oder geschlossenen Kreisringes ausgebildet werden.
Ein Ausführungsbeispiel des Erfindungsgegen standes ist in der Zeichnung veranschaulicht. Das die Welle 5 tragende Kugellager 6 ruht vermittels des Innenringes 1 auf einem elastischen, vorzugsweise aus Stahl bestehenden Träger 2, der zwischen dem Innenring 1 und einem aussen fest gelagerten Aussen ring 3 eingesetzt ist. Der Innenring 1 ist auf dem äussern und der Aussenring 3 ist am innern Umfang mit einigen Vorsprüngen 4 versehen, die gegenein- ander um ihre halbe Teilung versetzt sind. Die Ringe 1 und 3 und der Träger 2 sind gegen wechsel seitige Dreh- und Axialverschiebung gesichert.
Die Vorsprünge 4 an den Ringen 1 und 3 sind so ge wählt, dass die Verformungen des elastischen Trägers durch das Aufsitzen desselben auf den Ringen 1 und 3 zwischen den Vorsprüngen 4 begrenzt werden.
Die von aussen erregten Vibrationen übertragen sich auf den Rotor in verringertem Masse, und bei mangelnder Auswuchtung des Rotors, sei es infolge ursprünglicher unvollkommener Auswägung oder in folge Absetzung von Verunreinigungen, nimmt der Rotor seine Lage nach der neuen freien Achse ein. Bei Verformung des elastischen Trägers ändert sich die Dicke der zwischen dem elastischen Träger, Aussen- und Innenring ausgebildeten Ölschicht und bewirkt dadurch eine Abdämpfung der Schwingun gen. Die Düse 7 sorgt für die Ölzufuhr.
Derartige Wellenlagerungen kommen insbeson dere bei Turboladern und Elektromotoren zur An wendung.
Shaft bearings in rotary machines In machines with rigid shaft bearings in roller bearings, which are exposed to external vibrations or vibrations caused by insufficient rotor balancing, the roller bearings often wear out excessively or even destroy them prematurely.
The shortcomings of such storage are eliminated by the storage according to the present invention, the bearing resting by means of an inner ring on an elastic carrier which is inserted between the inner ring and an outer ring. The elastic support allows a limited radial movement of the shaft and causes a total or partial prevention of the transmission of shocks to the bearing. The outer circumference of the inner ring and the inner circumference of the outer ring are expediently provided with projections which are offset from one another by half a division.
Between the rings and the elastic carrier there is advantageously a thin layer of oil, the thickness of which changes when the elastic carrier is deformed, thereby damping the vibrations. The elastic carrier can be designed in the form of an open or closed circular ring.
An embodiment of the subject matter of the invention is illustrated in the drawing. The ball bearing 6 carrying the shaft 5 rests by means of the inner ring 1 on an elastic carrier 2, preferably made of steel, which is inserted between the inner ring 1 and an outer ring 3 fixedly mounted on the outside. The inner ring 1 is provided on the outer circumference and the outer ring 3 is provided on the inner circumference with a few projections 4 which are offset from one another by half their pitch. The rings 1 and 3 and the carrier 2 are secured against alternating rotational and axial displacement.
The projections 4 on the rings 1 and 3 are selected in such a way that the deformations of the elastic carrier due to its seating on the rings 1 and 3 between the projections 4 are limited.
The externally excited vibrations are transmitted to the rotor to a lesser extent, and if the rotor is not balanced, be it as a result of original imperfect weighing or as a result of the deposition of impurities, the rotor takes its position on the new free axis. When the elastic carrier is deformed, the thickness of the oil layer formed between the elastic carrier and the outer and inner ring changes, thereby damping the vibrations. The nozzle 7 provides the oil supply.
Such shaft bearings are used in particular in turbochargers and electric motors.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS345771X | 1955-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH345771A true CH345771A (en) | 1960-04-15 |
Family
ID=5452334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH345771D CH345771A (en) | 1955-05-04 | 1956-05-03 | Shaft bearings in rotary machines |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH345771A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0205952A1 (en) * | 1985-06-12 | 1986-12-30 | Sulzer-Escher Wyss AG | Processing machine with a rotating drum |
EP0287309A2 (en) * | 1987-04-13 | 1988-10-19 | Skf (U.K.) Limited | A bearing assembly |
WO2003062670A1 (en) * | 2002-01-24 | 2003-07-31 | Torotrak (Development) Ltd. | Improvements relating to continuously variable transmissions |
-
1956
- 1956-05-03 CH CH345771D patent/CH345771A/en unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0205952A1 (en) * | 1985-06-12 | 1986-12-30 | Sulzer-Escher Wyss AG | Processing machine with a rotating drum |
EP0287309A2 (en) * | 1987-04-13 | 1988-10-19 | Skf (U.K.) Limited | A bearing assembly |
EP0287309A3 (en) * | 1987-04-13 | 1989-06-21 | Skf (U.K.) Limited | A bearing assembly |
WO2003062670A1 (en) * | 2002-01-24 | 2003-07-31 | Torotrak (Development) Ltd. | Improvements relating to continuously variable transmissions |
EP1486700A3 (en) * | 2002-01-24 | 2005-06-29 | Torotrak (Development) Limited | Roller and bearing assembly for a rolling-traction continuously variable transmission |
US7632208B2 (en) | 2002-01-24 | 2009-12-15 | Torotrak (Development) Limited | Continuously variable transmissions |
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