WO2011138107A1 - Palier à roulement à garniture d'étanchéité intégrée - Google Patents

Palier à roulement à garniture d'étanchéité intégrée Download PDF

Info

Publication number
WO2011138107A1
WO2011138107A1 PCT/EP2011/055227 EP2011055227W WO2011138107A1 WO 2011138107 A1 WO2011138107 A1 WO 2011138107A1 EP 2011055227 W EP2011055227 W EP 2011055227W WO 2011138107 A1 WO2011138107 A1 WO 2011138107A1
Authority
WO
WIPO (PCT)
Prior art keywords
edge
bearing
sealing
reinforcement
sealing disc
Prior art date
Application number
PCT/EP2011/055227
Other languages
German (de)
English (en)
Inventor
Martin Grehn
Rainer Schröder
Felix Hofbauer
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2011138107A1 publication Critical patent/WO2011138107A1/fr

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller 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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller bearings
    • F16C23/08—Ball or roller bearings self-adjusting
    • F16C23/082—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface
    • F16C23/086—Ball or roller bearings self-adjusting by means of at least one substantially spherical surface forming a track for rolling elements
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/10—Application independent of particular apparatuses related to size
    • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
    • 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
    • F16C2360/31—Wind motors
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/80—Labyrinth sealings

Definitions

  • the invention relates to a roller bearing with integrated seal, this consisting of an annular sealing disc with elastic properties, which is inserted with a first edge in a retaining groove on one of the bearing rings and slidably engages with the other, second edge in a sealing groove on the other bearing ring , Background of the invention
  • Rolling bearings with integrated seal are particularly suitable for bearings where no sufficient effective outer seals can be provided for space or cost reasons.
  • the task of the seals is, on the one hand, to prevent dirt and foreign bodies from penetrating into the bearings and, on the other hand, to hold lubricant present in the bearing, if appropriate over the entire service life of the bearing.
  • Seals with elastic properties are used in particular in angularly adjustable bearings, ie for example in spherical roller bearings or spherical bearings, in which the outer bearing ring relative to the bearing axis is tilted so that the seals can follow these movements and accidental opening of the seals is prevented.
  • Elastic seals are also able to compensate for an axial and / or radial clearance between the bearing rings.
  • the roller ring consisting of the rollers and the cage which accommodates the latter and also leads can axially approach the sealing disks and deform them outwardly.
  • the seals can bulge outwards even under the high internal lubricant pressure, which builds up in particular at high rotational speeds as a result of the centrifugal forces acting on the lubricant.
  • the sealing lips abutting the bearing ring lift off and open.
  • the invention has for its object to provide a rolling bearing with integrated seal referred to in the preamble of claim 1, in which a deformation of the sealing rings is avoided under the loads occurring during operation, wherein the sealing rings should also be able to swing out the bearing and an axial and / or radial clearance of the bearing rings to follow each other.
  • the invention is based on the finding that the desired properties of the sealing rings, namely resistance to deformation on the one hand and flexibility on the other hand can be achieved by arming a portion of the sealing rings.
  • the invention is therefore based on a rolling bearing with integrated seal, consisting of an annular sealing disc with elastic properties, which is inserted with a first edge in a retaining groove on one of the bearing rings and engages with the other, second edge slidably in a Dichtnutan extract on the other bearing ring ,
  • the invention provides that the sealing disc is reinforced and stiffened in an adjoining the first edge edge region by a reinforcement, while the remaining region of the sealing ring is formed elastically.
  • the flexible second region ensures that the sealing ring can follow a tilting movement of the outer bearing ring and relative movements of the bearing rings against each other as a result of axial and / or radial play.
  • the reinforcement is designed so that it reliably prevents deformation of the sealing disk, for example, beyond the axial dimensions of the bearing predetermined by the bearing rings during start-up of the roller ring and under the action of an internal lubricant pressure, and ensures lasting engagement of the sealing edge in the associated sealing groove arrangement.
  • the sealing disc is formed of an elastomeric material in which the reinforcement is embedded.
  • the reinforcement is preferably made of a sheet metal material.
  • the remaining region which is not stiffened by a reinforcement, is preferably formed like a bellows, this region forming in cross-section, for example, a single or multiple corrugated profile.
  • the seal according to the invention is particularly suitable for large spherical roller bearings or spherical roller bearings with an outer bearing ring which can be tilted relative to the bearing axis.
  • the sealing disk is inserted into a retaining groove formed on the inner circumference of the outer bearing ring, and that the connecting piece adjoins the outer edge.
  • de outer edge region is reinforced and stiffened by a reinforcement, wherein the remaining region is formed elastically.
  • the load caused by an axial start-up of the roller collar has an effect on the outer edge region, so that an arming of this outer edge region offers the desired anti-fade protection.
  • the reinforced by a reinforcement edge region may extend over a range of 5% to 90% of the radial sealing disc width depending on bearing design and bearing use.
  • FIG. 1 is a partial longitudinal section through a spherical roller bearing with a sealing washer according to the invention
  • FIG. 2 is a view similar to FIG. 1 with another embodiment of the sealing disc
  • FIG. 3 is an enlarged view of a sealing lip arrangement sliding against the inner bearing ring
  • FIG. 4 shows another embodiment of a sealing lip arrangement.
  • the spherical roller bearing 2 shown in Fig. 1 comprises an outer bearing ring 4, an inner bearing ring 6 and two rows between the bearing rings 4, 6 arranged rolling elements 8.
  • the existing between the outer bearing ring 4 and the inner bearing ring 6 annular gap with the gap width a is sealed by means of an integrated sealing washer 10.
  • the sealing disk 10 consists essentially of an elastomer material or the like, in which a reinforcement 12, for example of a metal sheet metal or a plastic disk, is embedded.
  • the sealing disc 10 is fixedly inserted with a first, radially outer edge 14 in a formed on the inner circumference of the outer bearing ring 4 retaining groove 16.
  • the other, second edge 18 of the sealing washer 10 slidably engages in a Dichtnutan extract 20 on the inner bearing ring 6 a.
  • the reinforcement 12 is designed such that the sealing disk 10, for example, when the rolling elements 8 or a cage receiving them, not shown, create the pressure on the sealing disk 10 when the bearing 2 is pivoted through a certain angle, and withstands the pressure not deformed.
  • the reinforcement extends in the example shown approximately over about 66% of the gap width a and thus forms a reinforced and stiffened edge region b.
  • the remaining region c is formed from the elastic base material of the sealing disc 10 and has a simple, in the axial direction of the bearing 2 wavy profile in a tilting movement of the outer bearing ring 4 relative to the inner bearing ring 6 or in an axial and / or radial play allows the two bearing rings against each other a balance without the second edge 18 is pulled out of the Dichtnutan ever and the sealing effect is lost.
  • a sealing lip arrangement is provided on the edge 18, which sealingly bears against an associated wall surface of the sealing groove arrangement, as will be explained in more detail below.
  • FIG. 2 shows an arrangement similar to Fig. 1, of which only in it differs that the non-reinforced, elastically remaining edge region c of the sealing disc 22 has a multiple corrugated in the axial direction of the bearing 2 profile and thus an improved elasticity.
  • FIG. 3 shows a detail view of the inner edge 26 of a sealing washer 28 engaging in a sealing groove arrangement 24.
  • two sealing lips 30, 32 are arranged, which abut against associated wall surfaces 34, 36 in such a way that they engage in one another Bearing inside prevailing pressure can be lifted and so excess lubricant can flow to the outside.
  • FIG. 4 shows an arrangement similar to FIG. 3 in a simplified embodiment, wherein a single sealing lip 42 is arranged on the inner edge 38 of the sealing disk 40 and, in the manner described with reference to FIG. 3, adjoins an associated wall surface 44 in such a way that it allows excess, under a certain internal pressure lubricant to flow outward.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un palier à roulement (2) avec une garniture d'étanchéité intégrée qui est constituée d'une rondelle d'étanchéité annulaire (10) à propriétés élastiques. La rondelle d'étanchéité est insérée par un premier bord (14) dans une rainure de maintien (16) sur l'une (4) des bagues de roulement, et elle s'engage par l'autre ou second bord (18) en glissement dans un agencement de rainure d'étanchéité (20) sur l'autre bague de roulement (6). L'invention vise à empêcher la déformation de la rondelle d'étanchéité (10) tout en lui laissant des propriétés élastiques lui permettant, en particulier pour des paliers à réglage angulaire, de suivre un mouvement de basculement de la bague de roulement extérieure ainsi que, le cas échéant, un jeu axial et/ou radial des bagues de roulement l'une par rapport à l'autre. A cet effet, la rondelle d'étanchéité (10) est, dans une région de bord (b) se raccordant au premier bord (14) renforcée et rigidifiée par une armature (12), tandis que la région restante (c) de la bague d'étanchéité (10) est réalisée de manière élastique.
PCT/EP2011/055227 2010-05-05 2011-04-05 Palier à roulement à garniture d'étanchéité intégrée WO2011138107A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019442.5 2010-05-05
DE102010019442A DE102010019442A1 (de) 2010-05-05 2010-05-05 Wälzlager mit integrierter Abdichtung

Publications (1)

Publication Number Publication Date
WO2011138107A1 true WO2011138107A1 (fr) 2011-11-10

Family

ID=43982410

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/055227 WO2011138107A1 (fr) 2010-05-05 2011-04-05 Palier à roulement à garniture d'étanchéité intégrée

Country Status (2)

Country Link
DE (1) DE102010019442A1 (fr)
WO (1) WO2011138107A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140011622A1 (en) * 2011-03-22 2014-01-09 Katsunori Sone Rolling bearing and a travel unit including rolling bearings
EP2808570A1 (fr) 2013-05-31 2014-12-03 NTN-SNR Roulements Roulement muni d'un système d'étanchéité
US20150176651A1 (en) * 2013-12-19 2015-06-25 Aktiebolaget Skf Seal unit for rolling-element bearing and rolling-element bearing including the seal unit
EP3029344A1 (fr) 2014-12-01 2016-06-08 NTN-SNR Roulements Pièce et système d'étanchéité pour roulements, et roulement muni de tels pièces et systèmes
CN114729669A (zh) * 2020-02-13 2022-07-08 舍弗勒技术股份两合公司 具有密封件的滚动轴承

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012223903A1 (de) * 2012-12-20 2014-06-26 Schaeffler Technologies Gmbh & Co. Kg Dichtung für ein Wälzlager und Wälzlager
DE102013208203A1 (de) * 2013-05-06 2014-11-06 Aktiebolaget Skf Wälzlager
DE102014209234A1 (de) 2014-05-15 2015-11-19 Schaeffler Technologies AG & Co. KG Dichtungsanordnung
FR3035930A1 (fr) * 2015-05-04 2016-11-11 Skf Ab Palier comprenant un flasque d'etancheite
DE102018101879A1 (de) * 2018-01-29 2019-08-01 Schaeffler Technologies AG & Co. KG Pendelrollenlager
DE102018107873B4 (de) 2018-04-04 2020-09-03 Schaeffler Technologies AG & Co. KG Anordnung mit Maschinenelementen und Dichtungsanordnung hierfür
EP4030073B1 (fr) 2021-01-19 2023-09-20 Siemens Gamesa Renewable Energy A/S Unité de palier pour une unité de rotor d'une éolienne et éolienne
EP4379209A1 (fr) 2022-11-30 2024-06-05 Siemens Gamesa Renewable Energy A/S Joint axial pour un rotor de générateur d'une éolienne

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203740A (en) * 1963-04-15 1965-08-31 Federal Mogul Bower Bearings Bearing seal
DE3721819A1 (de) * 1986-07-11 1988-01-21 Riv Officine Di Villar Perosa Waelzlager mit dichtungseinrichtung
US5119446A (en) * 1990-04-18 1992-06-02 Ab Skf Sealed spherical rolling bearing
WO2006019347A1 (fr) 2004-08-19 2006-02-23 Aktiebolaget Skf Roulement etanche
US20060153484A1 (en) * 2002-07-12 2006-07-13 Nsk Ltd. Pulley support double row ball bearing
EP1698790A2 (fr) * 2005-03-01 2006-09-06 NTN Corporation Palier de roulement avec une garniture d'étancheité
DE102007022675A1 (de) 2007-05-15 2008-11-20 Schaeffler Kg Dichtungsanordnung für ein Wälzlager
DE102007036891A1 (de) 2007-08-04 2009-02-19 Ab Skf Lagerung einer Hauptwelle einer Windkraftanlage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3203740A (en) * 1963-04-15 1965-08-31 Federal Mogul Bower Bearings Bearing seal
DE3721819A1 (de) * 1986-07-11 1988-01-21 Riv Officine Di Villar Perosa Waelzlager mit dichtungseinrichtung
US5119446A (en) * 1990-04-18 1992-06-02 Ab Skf Sealed spherical rolling bearing
US20060153484A1 (en) * 2002-07-12 2006-07-13 Nsk Ltd. Pulley support double row ball bearing
WO2006019347A1 (fr) 2004-08-19 2006-02-23 Aktiebolaget Skf Roulement etanche
EP1698790A2 (fr) * 2005-03-01 2006-09-06 NTN Corporation Palier de roulement avec une garniture d'étancheité
DE102007022675A1 (de) 2007-05-15 2008-11-20 Schaeffler Kg Dichtungsanordnung für ein Wälzlager
DE102007036891A1 (de) 2007-08-04 2009-02-19 Ab Skf Lagerung einer Hauptwelle einer Windkraftanlage

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140011622A1 (en) * 2011-03-22 2014-01-09 Katsunori Sone Rolling bearing and a travel unit including rolling bearings
US9506554B2 (en) * 2011-03-22 2016-11-29 Ntn Corporation Rolling bearing and a travel unit including rolling bearings
US10302132B2 (en) 2011-03-22 2019-05-28 Ntn Corporation Rolling bearing and a travel unit including rolling bearings
EP2808570A1 (fr) 2013-05-31 2014-12-03 NTN-SNR Roulements Roulement muni d'un système d'étanchéité
US20150176651A1 (en) * 2013-12-19 2015-06-25 Aktiebolaget Skf Seal unit for rolling-element bearing and rolling-element bearing including the seal unit
US9546684B2 (en) * 2013-12-19 2017-01-17 Aktiebolaget Skf Seal unit for rolling-element bearing and rolling-element bearing including the seal unit
EP3029344A1 (fr) 2014-12-01 2016-06-08 NTN-SNR Roulements Pièce et système d'étanchéité pour roulements, et roulement muni de tels pièces et systèmes
CN114729669A (zh) * 2020-02-13 2022-07-08 舍弗勒技术股份两合公司 具有密封件的滚动轴承

Also Published As

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