WO2005106266A1 - Oil film bearing for roller pins with hydrostatic support - Google Patents

Oil film bearing for roller pins with hydrostatic support Download PDF

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Publication number
WO2005106266A1
WO2005106266A1 PCT/EP2005/004164 EP2005004164W WO2005106266A1 WO 2005106266 A1 WO2005106266 A1 WO 2005106266A1 EP 2005004164 W EP2005004164 W EP 2005004164W WO 2005106266 A1 WO2005106266 A1 WO 2005106266A1
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WO
WIPO (PCT)
Prior art keywords
oil film
film bearing
bearing according
internal thread
throttle
Prior art date
Application number
PCT/EP2005/004164
Other languages
German (de)
French (fr)
Inventor
Karl Keller
Uwe Plociennik
Original Assignee
Sms Demag 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 Sms Demag Ag filed Critical Sms Demag Ag
Publication of WO2005106266A1 publication Critical patent/WO2005106266A1/en

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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
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/06—Bearings 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
    • F16C32/0603—Bearings 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
    • F16C32/0614—Bearings 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
    • F16C32/0622—Bearings 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0226—Bearings
    • 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
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings

Definitions

  • the invention relates to an oil film bearing for roller journals, which, or the journal bushing mounted thereon, is surrounded by a bearing bush arranged in an installation piece, the bearing bushing having at least two internal hydrostatic pockets, which are arranged essentially in a common axial line and have an internal Check valve and can be fed with a pressure medium via bores running in the bearing bush, and throttles in the bores ensure optimal hydrostatic bearing, even when the roller journal or the journal bush in the bearing bush is skewed.
  • Such oil film bearings are known. As a rule, they have two pressure zones in a bearing bush, which are offset by 180 degrees. Two hydrostatic pockets are axially offset in each of these pressure zones. The hydrostatic pockets of a pressure zone are used in operation until the optimal hydrostatic properties are no longer guaranteed due to wear in the area of the pressure zone. The bearing bush in the chock can then be turned 180 degrees so that the two other hydrostatic pockets in the second pressure zone can be used. Throttles are used in the four holes for the two hydrostatic pockets in each of the two pressure zones. These are very delicate because of the small wall thickness of the bearing bushes and the resulting very small diameter of the holes. They are used to distribute the pressure medium coming from a pressure connection with pressure medium at approx.
  • the chokes are e.g. B. has become known as "Axial Visco Jets". They have a disc in a channel with a directed opening, via the pressure medium z. B. can be placed in a left-hand rotation. A pressure medium rotation reversal is achieved in the area of a disc with a central bore in the flow direction, and the pressure medium leaves the throttle through a third disc with an opposite opening.
  • the resistance of the throttle is influenced by a laminar or turbulent flow.
  • the openings of the throttle washers are very delicate, they can easily become blocked, especially if the incoming oil is not sufficiently filtered.
  • the invention has for its object to replace the expensive, failure-prone chokes by inexpensive, less prone to chokes.
  • the throttle be formed by an internal thread into which a bolt with an external thread is screwed, with at least the external diameter of the external thread being shortened compared to the internal diameter of the internal thread.
  • the resistance of the choke can be determined by the length and / or the cross section of the coiled channel and by the flow velocity of the pressure medium.
  • the respective diameters are preferably shortened by approximately the same amount, so that the same resistances result in both coiled channels of a throttle. However, there is also the possibility that the diameters are shortened differently, which would result in different resistances.
  • a throttle is formed by simply screwing in the bolt.
  • the resistance of the throttle can be optimally adjusted if the length of the bolt screwed into the internal thread is variably adjustable. Another option for setting the resistance, which can be used alone or together with other setting options, is given by the choice of the thread diameter.
  • determining the resistance consist in the fact that the twist-off dimension can be specified on the bolt and / or on the internal thread.
  • Another option for setting the resistance of the choke is that a choke element is connected in series. device and / or parallel connection with other throttle elements results in an adjustable resistance in its entirety.
  • Figure 1 shows the section of a bearing bush or a connection block 1, in which the holes 3, 3 'are provided for receiving the throttle.
  • the connection block 1 has an oil inlet opening 2, which communicates with two bores 3, 3 '(see also FIG. 2). Internal threads 4, 4 'are arranged in the bores 3, 3'. Oil outlet openings 5, 5 'are provided at the end of the bores 3, 3' (see also FIG. 3).
  • Bolts 6, 6 'with an external thread 7, 7' are screwed into the bore 3, 3 ', the external diameter of which is shortened compared to the internal diameter of the internal thread 4, 4'.
  • Figure 4 shows the bolt 6 in the bore 3, which is provided with the internal thread 4.
  • the external thread 7 of the bolt 6 is shortened in diameter compared to the internal thread 4.
  • a coiled channel 8 is formed between the internal thread 4 and the external thread 7, the length and cross-sectional dimensions of which determine the resistance of the throttle.
  • Fig. 5 shows the oil film bearing 9 according to the invention, which is installed in a chock 10 and consists of a pin bush 11 which is arranged on a roller pin 12, and a bearing bush 13 which is seated in the chock 10.
  • a bearing bush 13 Arranged in the bearing bush 13 are two bores 14, 14 ', which lie partially one behind the other, which run from the outer edge 15 of the bearing bush 13 to radial bores 16, 16' which end in hydrostatic pockets 17, 17 '.
  • High-pressure connections are provided on the bearing bush 13, on which fixed lines 18, 18 'are mounted, which lead to a connection block 1 and are also fastened here by high-pressure connections.
  • the connection block 1 is fixed, for example, by screws on the chock 10.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The invention relates to an oil film bearing, for roller pins, which is, or the pin bush fixed thereon, is enclosed by a bearing bush, arranged in a modular piece, whereby the bearing bush comprises at least two internal hydrostatic pockets, arranged essentially along a common axial line, supplied with a pressure medium via a non-return valve and a drilling, running through the bearing bush with throttles in the drilling, providing an optimal hydrostatic bearing even with an off-axis positioning of the roller pin, or the pin bush in the bearing bush. According to the invention the above may be improved such that expensive, unreliable throttles may be replaced by cheaper more reliable throttles, whereby the throttle is embodied with an internal thread (4, 4'), applied to a bolt (6, 6') with external thread (7, 7'), whereby at least the outer diameter of the external thread (7, 7') is reduced relative to the inner diameter of the internal thread (4, 4').

Description

Ölfilmlager für Walzenzapfen mit hydrostatischer UnterstützungOil film bearings for roller journals with hydrostatic support
Die Erfindung betrifft ein Ölfilmlager für Walzenzapfen, der, bzw. dessen auf ihn aufgezogene Zapfenbuchse, von einer in einem Einbaustück angeordneten Lagerbuchse umgeben ist, wobei die Lagerbuchse mindestens zwei im Wesentlichen in einer gemeinsamen axialen Linie angeordnete, innen liegende Hydrostatiktaschen aufweist, die über ein Rückschlagventil und über in der Lager- buchse verlaufende Bohrungen mit einem Druckmittel speisbar sind, und wobei Drosseln in den Bohrungen eine optimale hydrostatische Lagerung, auch bei einer Schieflage des Walzenzapfens bzw. der Zapfenbuchse in der Lagerbuchse gewährleisten.The invention relates to an oil film bearing for roller journals, which, or the journal bushing mounted thereon, is surrounded by a bearing bush arranged in an installation piece, the bearing bushing having at least two internal hydrostatic pockets, which are arranged essentially in a common axial line and have an internal Check valve and can be fed with a pressure medium via bores running in the bearing bush, and throttles in the bores ensure optimal hydrostatic bearing, even when the roller journal or the journal bush in the bearing bush is skewed.
Derartige Ölfilmlager sind bekannt. Sie weisen in der Regel in einer Lagerbuchse zwei Druckzonen auf, die um 180 Grad versetzt sind. In jeder dieser Druckzonen sind zwei Hydrostatiktaschen axial versetzt angeordnet. Dabei werden die Hydrostatiktaschen einer Druckzone im Betrieb so lange verwendet, bis durch einen Verschleiß im Bereich der Druckzone die optimalen Hydrostatikei- genschaften nicht mehr gewährleistet sind. Im Anschluss daran lässt sich die Lagerbuchse im Einbaustück um 180 Grad drehen, so dass die beiden weiteren Hydrostatiktaschen der zweiten Druckzone zum Einsatz kommen können. In den vier Bohrungen zu den jeweils zwei Hydrostatiktaschen der beiden Druckzonen sind Drosseln eingesetzt. Diese sind wegen der geringen Wanddicke der Lagerbuchsen und der dadurch gegebenen sehr kleinen Durchmesser der Bohrungen sehr filigran gearbeitet. Sie dienen dazu, das von einem Druckan- schluss, an dem Druckmittel mit ca. 200 bis 2000 bar ansteht, kommende Druckmedium möglichst gleichmäßig auf die beiden Hydrostatiktaschen einer Druckzone zu verteilen. Wird durch eine Schieflage der Zapfenbuchse in der Lagerbuchse eine der Hydrostati Waschen der Druckzone halbwegs freigelegt, so kann aus der freigelegten Hydrostatiktasche vergleichsweise mehr Druckmedium strömen. Dadurch würde in dieser Hydrostatiktasche ein großer Druckabfall entstehen. Die Drosseln bewirken, dass sich der Druckabfall in dieser Lagetasche in Grenzen hält. Durch den entstehenden Differenzdruck zwischen den beiden Hydrostatiktaschen wird ein Korrekturmoment gebildet, welches der Schieflage entgegenwirkt.Such oil film bearings are known. As a rule, they have two pressure zones in a bearing bush, which are offset by 180 degrees. Two hydrostatic pockets are axially offset in each of these pressure zones. The hydrostatic pockets of a pressure zone are used in operation until the optimal hydrostatic properties are no longer guaranteed due to wear in the area of the pressure zone. The bearing bush in the chock can then be turned 180 degrees so that the two other hydrostatic pockets in the second pressure zone can be used. Throttles are used in the four holes for the two hydrostatic pockets in each of the two pressure zones. These are very delicate because of the small wall thickness of the bearing bushes and the resulting very small diameter of the holes. They are used to distribute the pressure medium coming from a pressure connection with pressure medium at approx. 200 to 2000 bar as evenly as possible over the two hydrostatic pockets of a pressure zone. If one of the hydrostatic washing of the pressure zone is partially exposed due to the skewed position of the journal bushing in the bearing bushing, comparatively more pressure medium can flow from the exposed hydrostatic pocket. This would result in a large drop in pressure in this hydrostatic bag. The throttles ensure that the pressure drop in this layer pocket is limited. The resulting differential pressure between the two hydrostatic pockets creates a correction torque that counteracts the skew.
Bei gattungsgemäßen Ölfilmlagern sind vier derartiger Drosseln in einer Lager- buchse untergebracht. Die Drosseln sind z. B. unter der Bezeichnung "Axial Visco Jets" bekannt geworden. Sie weisen in einem Kanal eine Scheibe mit einer gerichteten Öffnung auf, über die Druckmittel z. B. in eine links gerichtete Rotation versetzt werden kann. Im Bereich einer im Kanal in Fließrichtung folgenden Scheibe mit einer Zentralbohrung wird eine Druckmittelrotationsumkehr erreicht und durch eine dritte Scheibe mit einer entgegengerichteten Öffnung verlässt das Druckmittel die Drossel. Durch eine laminare oder hier turbulente Strömung wird der Widerstand der Drossel beeinflusst.In the case of generic oil film bearings, four such throttles are accommodated in a bearing bush. The chokes are e.g. B. has become known as "Axial Visco Jets". They have a disc in a channel with a directed opening, via the pressure medium z. B. can be placed in a left-hand rotation. A pressure medium rotation reversal is achieved in the area of a disc with a central bore in the flow direction, and the pressure medium leaves the throttle through a third disc with an opposite opening. The resistance of the throttle is influenced by a laminar or turbulent flow.
Da die Öffnungen der Scheiben der Drossel sehr filigran gearbeitet sind, kön- nen sie leicht verstopfen, insbesondere dann, wenn das zulaufende Öl nicht ausreichend gefiltert ist.Since the openings of the throttle washers are very delicate, they can easily become blocked, especially if the incoming oil is not sufficiently filtered.
Der Erfindung liegt die Aufgabe zugrunde, die teueren, störanfälligen Drosseln durch kostengünstige, weniger störanfällige Drosseln zu ersetzen.The invention has for its object to replace the expensive, failure-prone chokes by inexpensive, less prone to chokes.
Dazu wird vorgeschlagen, dass die Drossel durch ein Innengewinde gebildet ist, in das ein Bolzen mit Außengewinde eingeschraubt ist, wobei zumindest der Außendurchmesser des Außengewindes gegenüber dem Innendurchmesser des Innengewindes gekürzt ist. Dadurch entsteht ein gewendelter Kanal mit dreieckigem Querschnitt, über den das Druckmittel durch die Drossel fließt. Der Widerstand der Drossel lässt sich durch die Länge und/oder den Querschnitt des gewendelten Kanals sowie durch die Strömungsgeschwindigkeit des Druckmediums beeinflussen.For this purpose, it is proposed that the throttle be formed by an internal thread into which a bolt with an external thread is screwed, with at least the external diameter of the external thread being shortened compared to the internal diameter of the internal thread. This creates a spiral channel with a triangular cross section, through which the pressure medium flows through the throttle. The resistance of the choke can be determined by the length and / or the cross section of the coiled channel and by the flow velocity of the pressure medium.
Es besteht auch die Möglichkeit, dass der Innendurchmesser des Innengewindes gegenüber dem Innendurchmesser des Außengewindes gekürzt ist. Wird dieses Merkmal zusätzlich angewandt, so ergeben sich zwei gewendelte Kanäle mit dreieckigem Querschnitt, die z. B. in Parallelschaltung angesteuert werden können. Es besteht jedoch auch die Möglichkeit, dass jeder der gewendelten Kanäle für eine der Hydrostatiktaschen vorgesehen ist.There is also the possibility that the inside diameter of the internal thread is shortened compared to the inside diameter of the external thread. If this feature is used in addition, there are two spiral channels with a triangular cross section, which, for. B. can be controlled in parallel. However, there is also the possibility that each of the coiled channels is intended for one of the hydrostatic pockets.
Vorzugsweise sind die entsprechenden Durchmesser um jeweils ein annähernd gleiches Maß gekürzt, so dass sich in beiden gewendelten Kanälen einer Drossel gleiche Widerstände ergeben. Es besteht jedoch auch die Möglichkeit, dass die Durchmesser unterschiedlich gekürzt sind, wodurch sich unterschiedliche Widerstände ergeben würden.The respective diameters are preferably shortened by approximately the same amount, so that the same resistances result in both coiled channels of a throttle. However, there is also the possibility that the diameters are shortened differently, which would result in different resistances.
Von Vorteil ist, dass das Innengewinde in der Bohrung vorgesehen ist. Durch einfaches Einschrauben des Bolzens wird damit eine Drossel gebildet.It is advantageous that the internal thread is provided in the bore. A throttle is formed by simply screwing in the bolt.
Möglich ist, dass das Innengewinde in einer Hülse vorgesehen ist, die in die Bohrung einsetzbar ist. Damit ist die Drossel leicht komplett austauschbar.It is possible that the internal thread is provided in a sleeve that can be inserted into the bore. The throttle is therefore easily completely replaceable.
Der Widerstand der Drossel lässt sich optimal einstellen, wenn die Länge des in das Innengewinde eingedrehten Bolzens variabel einstellbar ist. Eine weitere Möglichkeit, den Widerstand einzustellen, die alleine oder auch mit anderen Einstellmöglichkeiten zusammen verwendet werden kann, ist durch die Wahl des Gewindedurchmessers gegeben.The resistance of the throttle can be optimally adjusted if the length of the bolt screwed into the internal thread is variably adjustable. Another option for setting the resistance, which can be used alone or together with other setting options, is given by the choice of the thread diameter.
Weitere einzeln bzw. kumulativ verwendbare. Merkmale zur Bestimmung des Widerstandes bestehen darin, dass das Abdrehmaß am Bolzen und/oder am Innengewinde vorgebbar ist. Eine weitere Möglichkeit zur Einstellung des Widerstands der Drossel besteht darin, dass ein Drosselelement in Reihenschal- tung und/oder Parallelschaltung mit anderen Drosselelementen einen in ihrer Gesamtheit einstellbaren Widerstand ergibt.More individually or cumulatively usable. Features for determining the resistance consist in the fact that the twist-off dimension can be specified on the bolt and / or on the internal thread. Another option for setting the resistance of the choke is that a choke element is connected in series. device and / or parallel connection with other throttle elements results in an adjustable resistance in its entirety.
Die Erfindung wird anhand einer Zeichnung näher erläutert. Dabei zeigtThe invention is explained in more detail with reference to a drawing. It shows
Fig.1 in schematischer Darstellung zwei erfindungsgemäße Drosseln,1 shows a schematic representation of two chokes according to the invention,
Fig.2 einen Schnitt entlang der Linie A - A,2 shows a section along the line A - A,
Fig.3 einen Schnitt entlang der Linie B - B,3 shows a section along the line B - B,
Fig.4 den Ausschnitt X in vergrößerter Darstellung, und4 shows the detail X in an enlarged view, and
Fig.5 das erfindungsgemäße Ölfilmlager.5 the oil film bearing according to the invention.
Figur 1 zeigt den Ausschnitt aus einer Lagerbuchse oder aber eines Anschlussblocks 1 , in dem die Bohrungen 3, 3' zur Aufnahme der Drossel vorgesehen sind. Der Anschlussblock 1 weist eine Öleintrittsöffnung 2 auf, die mit zwei Bohrungen 3, 3' kommuniziert (siehe auch Fig. 2). In den Bohrungen 3, 3' sind Innengewinde 4, 4' angeordnet. Am Ende der Bohrungen 3, 3' sind Ölaustritts- öffnungen 5, 5' vorgesehen (siehe auch Fig. 3). In die Bohrung 3, 3' sind Bolzen 6, 6' mit einem Außengewinde 7, 7' eingedreht, dessen Außendurchmesser gegenüber dem Innendurchmesser des Innengewindes 4, 4' gekürzt ist.Figure 1 shows the section of a bearing bush or a connection block 1, in which the holes 3, 3 'are provided for receiving the throttle. The connection block 1 has an oil inlet opening 2, which communicates with two bores 3, 3 '(see also FIG. 2). Internal threads 4, 4 'are arranged in the bores 3, 3'. Oil outlet openings 5, 5 'are provided at the end of the bores 3, 3' (see also FIG. 3). Bolts 6, 6 'with an external thread 7, 7' are screwed into the bore 3, 3 ', the external diameter of which is shortened compared to the internal diameter of the internal thread 4, 4'.
Figur 4 zeigt den Bolzen 6 in der Bohrung 3, die mit dem Innengewinde 4 versehen ist. Das Außengewinde 7 des Bolzens 6 ist gegenüber dem Innengewinde 4 im Durchmesser gekürzt. Zwischen dem Innengewinde 4 und dem Außengewinde 7 bildet sich ein gewendelter Kanal 8, dessen Länge und dessen Querschnitts- Abmessungen den Widerstand der Drossel bestimmen.Figure 4 shows the bolt 6 in the bore 3, which is provided with the internal thread 4. The external thread 7 of the bolt 6 is shortened in diameter compared to the internal thread 4. A coiled channel 8 is formed between the internal thread 4 and the external thread 7, the length and cross-sectional dimensions of which determine the resistance of the throttle.
Fig. 5 zeigt das erfindungsgemäße Ölfilmlager 9, das in ein Einbaustück 10 eingebaut ist und aus einer Zapfenbuchse 11 die auf einem Walzenzapfen 12 angeordnet ist, und einer Lagerbuchse 13 die im Einbaustück 10 sitzt, besteht. In der Lagerbuchse 13 sind zwei Bohrungen 14,14' die teilweise hintereinander liegen, angeordnet, die vom äußeren Rand 15 der Lagerbuchse 13 zu Radialbohrungen 16, 16' verlaufen, die in Hydrostatiktaschen 17, 17' enden.Fig. 5 shows the oil film bearing 9 according to the invention, which is installed in a chock 10 and consists of a pin bush 11 which is arranged on a roller pin 12, and a bearing bush 13 which is seated in the chock 10. Arranged in the bearing bush 13 are two bores 14, 14 ', which lie partially one behind the other, which run from the outer edge 15 of the bearing bush 13 to radial bores 16, 16' which end in hydrostatic pockets 17, 17 '.
An der Lagerbuchse 13 sind Hochdruckanschlüsse vorgesehen, an denen feste Leitungen 18, 18' montiert sind, die zu einem Anschlußblock 1 führen und hier ebenfalls durch Hochdruckanschlüsse befestigt sind. Der Anschlußblock 1 ist z.B. über Schrauben am Einbaustück 10 festgelegt. High-pressure connections are provided on the bearing bush 13, on which fixed lines 18, 18 'are mounted, which lead to a connection block 1 and are also fastened here by high-pressure connections. The connection block 1 is fixed, for example, by screws on the chock 10.
BezugszeichenübersichtReference numeral Overview
1. Anschlussblock1. Terminal block
2. Öleintrittsöffnung2. Oil inlet opening
3. Bohrung3rd hole
4. Innengewinde4. Internal thread
5. Ölaustrittsöffnung5. Oil outlet opening
6. Bolzen6. Bolt
7. Außengewinde7. Male thread
8. gewendelter Kanal8th spiral channel
9. Ölfilmlager9. Oil film bearing
10. Einbaustück10. Installation piece
11. Zapfenbuchse11. Pin bushing
12. Walzenzapfen12. Roll neck
13. Lagerbuchse13. Bearing bush
14. Bohrung14. Hole
15. Rand15. Edge
16. Radialbohrung16. Radial bore
17 Hydrostatiktasche17 hydrostatic bag
18 Leitung 18 management

Claims

Patenansprüche patent claims
1. Ölfilmlager (9) für Walzenzapfen (12), der, bzw. dessen auf ihn aufgezogene Zapfenbuchse (11) von einer in einem Einbaustück (10) angeordneten Lagerbuchse (13) umgeben ist, wobei die Lagerbuchse (13) mindestens zwei im Wesentlichen in einer gemeinsamen axialen Linie angeordnete, innen liegende Hydrostatiktaschen (17, 17') aufweist, die über ein Rückschlagventil und über in der Lagerbuchse (13) verlaufende Bohrungen (14, 14') mit einem Druckmittel speisbar sind, und wobei Drosseln in den Bohrungen (14, 14') eine optimale hydrostatische Lagerung, auch bei einer Schieflage des Walzenzapfens (12) bzw. der Zapfenbuchse (11) in der Lagerbuchse (13) gewährleisten, dadurch gekennzeichnet, dass die Drossel durch ein Innengewinde (4, 4') gebildet ist, in das ein Bolzen (6, 6') mit Außengewinde (7, 7') eingesetzt ist, wobei zumindest der Außendurchmesser des Außengewindes (7, 7') gegenüber dem Innendurchmesser des Innengewindes (4, 4') gekürzt ist.1. Oil film bearing (9) for roller journals (12) which, or the journal bushing (11) mounted thereon, is surrounded by a bearing bushing (13) arranged in a chock (10), the bearing bushing (13) at least two essentially Has internal hydrostatic pockets (17, 17 ') arranged in a common axial line, which can be fed with a pressure medium via a check valve and bores (14, 14') running in the bearing bush (13), and throttles in the bores (14, 14 ') ensure optimal hydrostatic support, even if the roller journal (12) or the journal bushing (11) is skewed in the bearing bushing (13), characterized in that the throttle is provided by an internal thread (4, 4') is formed, in which a bolt (6, 6 ') with an external thread (7, 7') is inserted, at least the outside diameter of the external thread (7, 7 ') being shortened compared to the inside diameter of the internal thread (4, 4').
2. Ölfilmlager nach Anspruch 1 , dadurch gekennzeichnet, dass der Innendurchmesser des Innengewindes (4, 4') gegenüber dem Innendurchmesser des Außengewindes (7, 7') gekürzt ist.2. Oil film bearing according to claim 1, characterized in that the inside diameter of the internal thread (4, 4 ') is shortened compared to the inside diameter of the external thread (7, 7').
3. Ölfilmlager nach Anspruch 2, dadurch gekennzeichnet, dass die Durchmesser in gleichem Maß gekürzt sind. 3. Oil film bearing according to claim 2, characterized in that the diameters are shortened to the same extent.
4. Ölfilmlager nach Anspruch 2, dadurch gekennzeichnet, dass die Durchmesser in unterschiedlichem Maß gekürzt sind.4. Oil film bearing according to claim 2, characterized in that the diameters are shortened to different degrees.
5. Ölfilmlager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Innengewinde (4, 4') in den Bohrungen (14, 14') vorgesehen ist.5. Oil film bearing according to one of claims 1 to 4, characterized in that the internal thread (4, 4 ') is provided in the bores (14, 14').
6. Ölfilmlager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Innengewinde (4, 4') in Bohrungen von festen Hochdruckleitungen (18, 18') vorgesehen ist.6. Oil film bearing according to one of claims 1 to 4, characterized in that the internal thread (4, 4 ') is provided in bores of fixed high-pressure lines (18, 18').
7. Ölfilmlager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Innengewinde (4, 4') in den Bohrungen (3, 3') eines Anschlussblocks (1 ) vorgesehen ist.7. Oil film bearing according to one of claims 1 to 4, characterized in that the internal thread (4, 4 ') in the bores (3, 3') of a connection block (1) is provided.
8. Ölfilmlager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Innengewinde (4, 4') in einer Hülse vorgesehen sind, die in die Bohrungen (14, 14') bzw. (3, 3') einsetzbar sind.8. Oil film bearing according to one of claims 1 to 4, characterized in that the internal threads (4, 4 ') are provided in a sleeve which can be inserted into the bores (14, 14') or (3, 3 ').
9. Ölfilmlager nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Widerstand der Drossel durch die Länge des in das Innengewinde (4, 4') eingedrehten Bolzens (6, 6') variabel einstellbar ist.9. Oil film bearing according to one of claims 1 to 8, characterized in that the resistance of the throttle is variably adjustable by the length of the bolt (6, 6 ') screwed into the internal thread (4, 4').
10. Ölfilmlager nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass der Widerstand der Drossel durch die Wahl der Gewindedurchmesser bestimmbar ist. 10. Oil film bearing according to one of claims 1 to 9, characterized in that the resistance of the throttle can be determined by the choice of the thread diameter.
11. Ölfilmlager nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Widerstand der Drossel durch das Abdrehmaß am Bolzen und/oder am Innengewinde bestimmbar ist.11. Oil film bearing according to one of claims 1 to 10, characterized in that the resistance of the throttle can be determined by the degree of calibration on the bolt and / or on the internal thread.
12. Ölfilmlager nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Widerstand der Drossel durch die Reihenschaltung und/oder Parallelschaltung von einzelnen entsprechend in ihren Widerständen eingestel- Iten Drosselelementen bestimmbar ist. 12. Oil film bearing according to one of claims 1 to 11, characterized in that the resistance of the throttle can be determined by the series connection and / or parallel connection of individual throttle elements set accordingly in their resistances.
PCT/EP2005/004164 2004-05-04 2005-04-19 Oil film bearing for roller pins with hydrostatic support WO2005106266A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410022287 DE102004022287A1 (en) 2004-05-04 2004-05-04 Oil film bearing for roll neck with hydrostatic support
DE102004022287.8 2004-05-04

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103246786A (en) * 2013-05-24 2013-08-14 哈尔滨理工大学 Method for building lubricating oil film model after thermal mechanical coupling deformation of hydrostatic thrust bearing
CN103593537A (en) * 2013-11-27 2014-02-19 哈尔滨理工大学 Method for building lubricating oil film model after thermal coupling deformation of static pressure center frame
CN105069213A (en) * 2015-07-31 2015-11-18 北京工业大学 Mixed preloaded bearing rigidity calculation method considering main shaft-bearing coupling

Citations (4)

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Publication number Priority date Publication date Assignee Title
US3453031A (en) * 1967-04-06 1969-07-01 Morgan Construction Co Bearing assembly
DD108577A1 (en) * 1973-12-04 1974-09-20
CH574041A5 (en) * 1973-12-19 1976-03-31 Bosch Gmbh Robert Sliding shoe for radial piston engine - is stabilised against tilting by symmetrical pockets connected with restrictors
JPH11210905A (en) * 1998-01-26 1999-08-06 Toshiba Mach Co Ltd Throttle valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453031A (en) * 1967-04-06 1969-07-01 Morgan Construction Co Bearing assembly
DD108577A1 (en) * 1973-12-04 1974-09-20
CH574041A5 (en) * 1973-12-19 1976-03-31 Bosch Gmbh Robert Sliding shoe for radial piston engine - is stabilised against tilting by symmetrical pockets connected with restrictors
JPH11210905A (en) * 1998-01-26 1999-08-06 Toshiba Mach Co Ltd Throttle valve

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103246786A (en) * 2013-05-24 2013-08-14 哈尔滨理工大学 Method for building lubricating oil film model after thermal mechanical coupling deformation of hydrostatic thrust bearing
CN103593537A (en) * 2013-11-27 2014-02-19 哈尔滨理工大学 Method for building lubricating oil film model after thermal coupling deformation of static pressure center frame
CN105069213A (en) * 2015-07-31 2015-11-18 北京工业大学 Mixed preloaded bearing rigidity calculation method considering main shaft-bearing coupling

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