DE1575653A1 - Hydrostatic or aerostatic bearing - Google Patents

Hydrostatic or aerostatic bearing

Info

Publication number
DE1575653A1
DE1575653A1 DE19661575653 DE1575653A DE1575653A1 DE 1575653 A1 DE1575653 A1 DE 1575653A1 DE 19661575653 DE19661575653 DE 19661575653 DE 1575653 A DE1575653 A DE 1575653A DE 1575653 A1 DE1575653 A1 DE 1575653A1
Authority
DE
Germany
Prior art keywords
bearing
lubricant
hydrostatic
aerostatic bearing
nozzles
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
Application number
DE19661575653
Other languages
German (de)
Inventor
Tondl Dr-Ing Ales
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.)
SVU PRO STAVBU STROJU
Original Assignee
SVU PRO STAVBU STROJU
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 SVU PRO STAVBU STROJU filed Critical SVU PRO STAVBU STROJU
Publication of DE1575653A1 publication Critical patent/DE1575653A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0629Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
    • F16C32/064Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion the liquid being supplied under pressure
    • F16C32/0651Details of the bearing area per se
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00Bearings not otherwise provided for
    • F16C32/06Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
    • F16C32/0603Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion
    • F16C32/0614Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings
    • F16C32/0622Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a gas cushion, e.g. an air cushion the gas being supplied under pressure, e.g. aerostatic bearings via nozzles, restrictors

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Support Of The Bearing (AREA)

Description

H-=drostatisches oder aerostatisches Lager a ewn:staad der Erfindung bildet ein iyc.rostatisches oder .er östa tiscb:e,s Zager mit einem, unter Druck zugeführten @c@ru:r@c@it tel o ' den bisher bekannten hydrostatischen und aerostati- - _ schen- Lagern, wird das Schmiermittel wie in, Pig.1. dargestellt unter Druck zugeführt, meist mit Hilfe von Düsen 2, deren sclise radial zu#:# Lt:geiza@f eil c-erichtet , ist. 2enn- derartige Lag;-zr für die Lagerung elastischer oder starrer Läufer mit, hoher Drehzahl verwendet werden, entstehen in dem Schmier- iait-4el durüh Eintirkung der Viskositätskräfte,selbsterregte c@_wingungen vom ähnlichen Charakter wie bei den hydrodyna=- . mischen bzwo aerodynamischen Lagern. Die Ursache der-Ent- stehung derartiger Schwingungen ist der Charakter der dyna- ?@iscren Komponente der Tragkraft, gegeben durch die Strömung des Schmiermittels in dem Lagerspiel. - Die Erfindung beeinflußt durch'hre Einwirkung den Charakter der ächmiermittelströmung in dem Lagerspiel und beseitigt den erwähnten Nachteil dadurch, daß für die Zuführung. dew . - Schmiermittels, am Lagerumfang Zuführungsöffnungen.. zoBa, Düsen angeordnet sind, deren Achsen zumindest in ihren - Endbereichen schräg,. vorzugsweise tangential Zur-Oberfläche-'- des Lagerzapfens angeordnet sind. - `Der Zweck einer. derartigen Anordnung des Lagers ist die Sicherstellung des zwangsläufigen Schmiermittel-Umlauf s in dem Lagerspiel, ohne Rücksicht auf de Drehrichtung des Lagerzapfens. Dieser zwangäläufige Umlauf beeinflußt die Ver- teilung der Schmiermit tel-Strömungsgesahwindigkeit im Radial-- schnitt des Lagerspiels, was eine Charakter:deg der Tragkraft.des Lagers zur 2olge hatte Ein wesentlicher Vorteil ist die bedeutende Erhöhäuag der Ent--- - stehungsgrenze selbsterregter Schwing°angen, zoBa bei. der praktischen Anwendung bei einer elastischen Welle t l#-aft- geschmierten Lagern wurde mindestens das 43,5 -fäche der ersten kritischen Drehzahlunter Beibehaltung einer sehr :guten Tragkraft der Zager erzielt: Jedoch auch nach Über- schreitüng dieser Grenze war die Intensität der selbst- erregten ßchwingungen, im Hinblick auf die hishe.r-i g n Aus- führungsarten, unwesentlich. Die wirksame Dämpfung selbst- erregter Schwingungen -wird zugleich durch die Größe di ser Amplitude günstig beeinflußt, insbesondere bei der kritischen Drehzahl. Das Lager wurde sowohl für die lagerung eines steifen, als auch eines elastischen Rotors erprob t. - Ausführungsbeispiele der Erfindung sind in den 1ia,. 2 und 3 . der Zeichnung dargestellt. In Fig. 2 ist das Lager eines Rotors. dargestellt,s@@:-e`1 Achsrichtung der Zuführungsöffnungen, z. B' der @fsen für die: Schmiermttelzufirung, schräg, vorzugsweise ta..ng,ential zur Oberfläche des Lagerzapfens verläuft. In Fig. 3 ist eine Ausführung dargestellt. bei der die Düsen 2 für die Schmiermittelzuführung gleichfalls schräg ,vorzugs- weise tangential zur Oberfläche des lagerz@,pfens angeordnet sind, wobei. jedoch der eigentliche Körper 1- einer jede-n Düse 2, radial angeordnet ist. H- = static or aerostatic bearing a ewn: staad of the invention forms a static or static .er östa tiscb: e, s Zager with one, fed under pressure @ c @ ru: r @ c @ it tel o ' the previously known hydrostatic and aerostatic - _- bearings, the lubricant is used as in, Pig.1. shown fed under pressure, usually with the help of nozzles 2, whose sclise radial to #: # Lt: geiza @ f eil c-erected, is. 2enn- such Lag; -zr for the storage of elastic or rigid runners with, high speed are used, arise in the lubricant iait-4el due to the effect of the viscosity forces, self-excited c @ _vibrations of a similar character to the hydrodyna = -. mix or aerodynamic bearings. The cause of the such vibrations is the character of the dynamic ? @iscren component of the load-bearing capacity, given by the flow of the lubricant in the bearing clearance. - The invention influences the character through its influence the lubricant flow in the bearing clearance and eliminated the disadvantage mentioned in that for the feed. dew. - Lubricant, feed openings on the circumference of the bearing .. zoBa, Nozzles are arranged, the axes of which at least in their - End areas at an angle. preferably tangential to the surface -'- of the journal are arranged. - `The purpose of one. such arrangement of the camp is the Ensuring the unavoidable circulation of lubricant in the bearing play, regardless of the direction of rotation of the Journal. This inevitable circulation influences the division of the lubricant flow velocity in the radial cut of the camp game what a character: deg the Bearing capacity of the camp A major advantage is the significant increase in the ent --- - limit of self-excited oscillation ° assumed, zoBa at. the practical application with an elastic wave tl # -aft- lubricated bearings was at least 43.5 times the first critical speed while maintaining a very : good load-bearing capacity achieved by the Zager: However, even after beyond this limit was the intensity of the self- excited vibrations, with regard to the hishe.ri gn types of management, insignificant. The effective cushioning itself excited vibrations - is at the same time due to the size of this Affected amplitude favorably, especially in the critical Rotational speed. The warehouse was used for both the storage of a stiff, as well as an elastic rotor. - Embodiments of the invention are shown in FIGS. 2 and 3. shown in the drawing. In Fig. 2 the bearing is a rotor. shown, s @@: - e`1 Axial direction of the feed openings, e.g. B 'the @fsen for die: lubricant feed, oblique, preferably ta..ng, ential runs to the surface of the journal. In Fig. 3 an embodiment is shown. at which the nozzles 2 for the lubricant feed also at an angle, preferably arranged tangentially to the surface of the bearing pin are, where. however the actual body 1- each-n nozzle 2, is arranged radially.

Claims (1)

PA i E --N T A. X S B -H U 0:H gyrdrostatsehes oder aerostatisches Lager, dadurch gekenn- ieiehnet, daß für die -Sehmiermt .-elzuführung am Lager- --umfang Eimlase.äffnun-_en z. B. Düsen. angeordnet sind, deren Achse. zdest in ihren Enbbereichen schräg, vorzugs- weise tageaat3.al zur Oberfläche des lagerzäpfens angeord- net -.-Sind-.
PA i E --NT A. X S B -HU 0: H gyrdrostatsehes or aerostatic bearing, thus marked iiehnet that for the -Sehmiermt. -elzuführ at the warehouse- - scope of Eimlase.äffnun-_en z. B. Nozzles. are arranged, whose Axis. zdest inclined in their end areas, preferably wise tageaat3.al arranged to the surface of the bearing journal n e t -. -Are-.
DE19661575653 1965-12-17 1966-11-23 Hydrostatic or aerostatic bearing Pending DE1575653A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS758065 1965-12-17

Publications (1)

Publication Number Publication Date
DE1575653A1 true DE1575653A1 (en) 1970-01-29

Family

ID=5425228

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19661575653 Pending DE1575653A1 (en) 1965-12-17 1966-11-23 Hydrostatic or aerostatic bearing

Country Status (2)

Country Link
DE (1) DE1575653A1 (en)
GB (1) GB1149425A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570045A (en) * 1984-03-08 1986-02-11 Jeppson Morris R Conveyorized microwave heating chamber with dielectric wall structure
GB8421142D0 (en) * 1984-08-20 1984-09-26 Brown R D Damping device
US5466071A (en) * 1994-03-10 1995-11-14 Advanced Engineering Systems, Operations & Products, Inc. High speed hydrostatic spindle design
US6053636A (en) * 1998-11-10 2000-04-25 United Technologies Corporation Hydrostatic bearing with compensatory fluid injection
CN101691879B (en) * 2009-10-09 2011-02-02 大连理工大学 Dynamic and static pressure composite gas bearing with internal pi shaped air wedge groove

Also Published As

Publication number Publication date
GB1149425A (en) 1969-04-23

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