DE102011002633A1 - Roller bearing, particularly cylindrical roller bearing, has inner ring, outer ring and row of rolling bodies arranged between inner ring and outer ring - Google Patents
Roller bearing, particularly cylindrical roller bearing, has inner ring, outer ring and row of rolling bodies arranged between inner ring and outer ring Download PDFInfo
- Publication number
- DE102011002633A1 DE102011002633A1 DE102011002633A DE102011002633A DE102011002633A1 DE 102011002633 A1 DE102011002633 A1 DE 102011002633A1 DE 102011002633 A DE102011002633 A DE 102011002633A DE 102011002633 A DE102011002633 A DE 102011002633A DE 102011002633 A1 DE102011002633 A1 DE 102011002633A1
- Authority
- DE
- Germany
- Prior art keywords
- outer ring
- rolling bearing
- rolling
- ring
- roller bearing
- 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.)
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Classifications
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- 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/004—Electro-dynamic machines, e.g. motors, generators, actuators
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- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
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- 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
- F16C19/24—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 radial load mainly
- F16C19/26—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 radial load mainly with a single row of rollers
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- 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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/30—Electric properties; Magnetic properties
- F16C2202/36—Piezo-electric
Abstract
Description
Die Erfindung betrifft ein Wälzlager, umfassend einen Innenring und einen Außenring, wobei zwischen dem Innenring und dem Außenring mindestens eine Reihe Wälzkörper angeordnet ist, wobei das Wälzlager mindestens ein Generatorelement zur Erzeugung elektrischer Energie umfasst.The invention relates to a rolling bearing comprising an inner ring and an outer ring, wherein between the inner ring and the outer ring at least one row of rolling elements is arranged, wherein the rolling bearing comprises at least one generator element for generating electrical energy.
Ein solches Wälzlager ist beispielsweise aus der
Nachteilig ist bei einer solchen Lösung der relativ hohe apparative Aufwand der Lageranordnung, was entsprechende Kosten verursacht.A disadvantage of such a solution, the relatively high expenditure on equipment of the bearing assembly, which causes corresponding costs.
Der Erfindung liegt daher die Aufgabe zugrunde, ein gattungsgemäßes Wälzlager so auszubilden, dass es möglich wird, in einfacherer und apparativ weniger aufwändiger Weise und somit kostengünstiger eine Möglichkeit zu schaffen, das Lager mit einer elektrischen Generatorfunktion zu versehen.The invention is therefore the object of a generic rolling bearing in such a way that it is possible to provide in a simpler and less expensive apparatus and thus more cost-effective way to provide the bearing with an electric generator function.
Die Lösung dieser Aufgabe durch die Erfindung ist dadurch gekennzeichnet, dass das Generatorelement ein Piezoelement ist, das in einem Bereich des Innen- oder Außenrings platziert ist, der bei bestimmungsgemäßem Gebrauch des Wälzlagers einer wechselnden Materialspannung infolge der Überrollung durch die Wälzkörper unterworfen ist.The solution of this object by the invention is characterized in that the generator element is a piezoelectric element, which is placed in a region of the inner or outer ring, which is subject to the normal use of the rolling bearing of an alternating material tension due to the rolling over by the rolling elements.
Das Piezoelement ist bevorzugt in einer Ausnehmung angeordnet, die in den Innen- oder Außenring eingearbeitet ist. Die Ausnehmung ist besonders bevorzugt eine Nut, insbesondere eine Ringnut, die in eine innen- oder außenzylindrische Fläche des Innen- oder Außenrings eingearbeitet ist, die der Laufbahn für die Wälzkörper gegenüberliegt. Die Ringnut kann im Radialschnitt eine rechteckförmige Kontur aufweisen.The piezoelectric element is preferably arranged in a recess which is incorporated in the inner or outer ring. The recess is particularly preferably a groove, in particular an annular groove, which is incorporated in an inner or outer cylindrical surface of the inner or outer ring, which faces the raceway for the rolling elements. The annular groove may have a rectangular contour in radial section.
Eine Fortbildung sieht vor, dass eine Anzahl von Piezoelementen um den Umfang des Innen- oder Außenrings herum angeordnet ist. Bewährt hat sich die Anordnung von vier Piezoelementen um den Umfang des Innen- oder Außenrings herum; die Piezoelemente sind dabei bevorzugt äquidistant um den Umfang des Innen- oder Außenrings herum angeordnet.A further embodiment provides that a number of piezo elements are arranged around the circumference of the inner or outer ring. The arrangement of four piezo elements around the circumference of the inner or outer ring has proven to be successful; The piezo elements are preferably arranged equidistant around the circumference of the inner or outer ring around.
Das Piezoelement kann am Innen- oder Außenring festgeklebt oder festlötet sein.The piezo element can be glued or soldered to the inner or outer ring.
Bei dem Lager handelt es sich bevorzugt um ein Rollenlager, insbesondere um ein Zylinderrollenlager.The bearing is preferably a roller bearing, in particular a cylindrical roller bearing.
Das zum Einsatz kommende Piezoelement ist ein Bauteil, das den sog. Piezoeffekt ausnutzt, um bei Einwirkung einer mechanischen Kraft eine elektrische Spannung zu erzeugen. Die Piezoelektrizität beschreibt die Änderung der elektrischen Polarisation und somit das Auftreten einer elektrischen Spannung an Festkörpern, wenn sie elastisch verformt werden. Durch die gerichtete Verformung eines piezoelektrischen Materials bilden sich mikroskopische Dipole innerhalb der Elementarzellen (Verschiebung der Ladungs-Schwerpunkte). Die Aufsummierung über das damit verbundene elektrische Feld in allen Elementarzellen des Kristalls führt zu einer makroskopisch messbaren elektrischen Spannung. Dabei bedeutet eine gerichtete Verformung, dass der angelegte Druck nicht von allen Seiten auf den Piezokristall wirkt, sondern beispielsweise nur von gegenüberliegenden Seiten aus.The piezoelectric element used is a component which utilizes the so-called piezo effect in order to generate an electrical voltage when a mechanical force is applied. The piezoelectricity describes the change in the electrical polarization and thus the occurrence of an electrical voltage on solids when they are elastically deformed. Due to the directed deformation of a piezoelectric material, microscopic dipoles form within the unit cells (shift of the charge centers). The summation via the associated electric field in all unit cells of the crystal leads to a macroscopically measurable electrical voltage. In this case, a directed deformation means that the applied pressure does not act on the piezocrystal from all sides, but for example only from opposite sides.
Der Piezoeffekt kann nur in nichtleitenden Materialien auftreten. Weiterhin sind alle nichtleitenden ferroelektrischen Materialien bzw. Materialien mit permanentem elektrischen Dipol auch piezoelektrisch, beispielsweise Bariumtitanat und Blei-Zirkonat-Titanat (PZT).The piezoelectric effect can only occur in non-conductive materials. Furthermore, all non-conductive ferroelectric materials or materials with permanent electric dipole are also piezoelectric, for example barium titanate and lead zirconate titanate (PZT).
Bei Kristallen ist die Kristallsymmetrie ein weiteres Kriterium für das Auftreten der Piezoelektrizität. Die piezoelektrische Polarisation tritt nicht auf, wenn der Kristall ein Inversionszentrum besitzt.For crystals, crystal symmetry is another criterion for the occurrence of piezoelectricity. The piezoelectric polarization does not occur when the crystal has an inversion center.
Das bekannteste Material mit Piezoeigenschaften ist Quarz (SiO2). Technisch genutzte Materialien, die einen stärkeren Piezo-Effekt als Quarz zeigen, leiten sich oft von der sog. Perowskit-Struktur ab, z. B. Bariumtitanat (BaTiO3).The best known material with piezo properties is quartz (SiO 2 ). Technically used materials, which show a stronger piezo effect than quartz, are often derived from the so-called perovskite structure, z. B. barium titanate (BaTiO 3 ).
Mit der vorgeschlagenen Lösung wird es in einfacher und kostengünstiger Weise möglich, in gewissem Umfang elektrische Energie aus der Rotation des Lagers bei seinem bestimmungsgemäßen Gebrauch zu gewinnen. Insoweit kann der insgesamt benötigte Energieverbrauch reduziert werden.With the proposed solution, it is possible in a simple and cost-effective manner to gain some electrical energy from the rotation of the bearing in its intended use. In that regard, the total energy consumption required can be reduced.
Die Erfindung nutzt den Effekt, dass es durch das Abrollen der Wälzkörper auf einem Lagerring zu elastischen Verformungen unterhalb der Laufbahnen der Wälzkörper kommt. Diese Verformungen, d. h. die periodischen mechanischen Dehnungen und Stauchungen, werden als Aktuatorkraft genutzt, um das Piezoelement zu verformen und zur Erzeugung von elektrischer Energie anzuregen.The invention utilizes the effect that it comes through the rolling of the rolling elements on a bearing ring to elastic deformations below the raceways of the rolling elements. These deformations, d. H. the periodic mechanical strains and compressions are used as actuator force to deform the piezoelectric element and to stimulate the generation of electrical energy.
Ein weiterer vorteilhafter Effekt ist, dass die Reibung im Lager reduziert werden kann. Die geringere Reibung wird dadurch erreicht, dass die Werkstoffdämpfung verringert wird.Another beneficial effect is that the friction in the bearing can be reduced. The Lower friction is achieved by reducing the material damping.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawing, an embodiment of the invention is shown. Show it:
In
Das Lager
In
In den Außenumfang des Außenrings
Das Piezoelement
Wird das Lager
Diese zeitveränderliche Spannungsänderung hat entsprechende Verformungen der Lagerringe im Mikrobereich zur Folge, was insbesondere auch für die Materialbereiche gilt, an denen die Piezoelemente
Die so erzeugte (bzw. umgewandelte) elektrische Energie kann beispielsweise genutzt werden, um Stromverbraucher mit elektrischer Energie zu versorgen, die nur einen geringen Energiebedarf haben.The thus generated (or converted) electrical energy can be used, for example, to supply electricity consumers with electrical energy, which have only a low energy consumption.
Infrage kommen hier Elemente, die am oder im Lager benötigt bzw. gewünscht werden (z. B. spezielle Sensoren), und für die eine externe Energieversorgung problematisch bzw. aufwändig wäre. Dem Lager kann durch die Piezoelemente
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Wälzlager (Zylinderrollenlager)Rolling bearings (cylindrical roller bearings)
- 22
- Innenringinner ring
- 33
- Außenringouter ring
- 44
- Wälzkörperrolling elements
- 55
- Generatorelement (Piezoelement)Generator element (piezo element)
- 66
- Ausnehmung (Ringnut)Recess (ring groove)
- 77
- Laufbahncareer
- 88th
- Kabelelectric wire
- 99
- Laufbahncareer
- rr
- radiale Richtungradial direction
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 60121295 T2 [0002] DE 60121295 T2 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011002633A DE102011002633A1 (en) | 2011-01-13 | 2011-01-13 | Roller bearing, particularly cylindrical roller bearing, has inner ring, outer ring and row of rolling bodies arranged between inner ring and outer ring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011002633A DE102011002633A1 (en) | 2011-01-13 | 2011-01-13 | Roller bearing, particularly cylindrical roller bearing, has inner ring, outer ring and row of rolling bodies arranged between inner ring and outer ring |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011002633A1 true DE102011002633A1 (en) | 2012-07-19 |
Family
ID=46510132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102011002633A Withdrawn DE102011002633A1 (en) | 2011-01-13 | 2011-01-13 | Roller bearing, particularly cylindrical roller bearing, has inner ring, outer ring and row of rolling bodies arranged between inner ring and outer ring |
Country Status (1)
Country | Link |
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DE (1) | DE102011002633A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014208597A1 (en) * | 2014-05-08 | 2015-04-16 | Schaeffler Technologies Gmbh & Co. Kg | roller bearing assembly |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4402136A1 (en) * | 1994-01-26 | 1995-07-27 | Telefunken Microelectron | Motor vehicle tyre parameter measuring system |
US5952587A (en) * | 1998-08-06 | 1999-09-14 | The Torrington Company | Imbedded bearing life and load monitor |
DE10017572A1 (en) * | 2000-04-10 | 2001-10-18 | Inst Mikrotechnik Mainz Gmbh | Rolling bearings with remote-sensing registration units |
DE10041097A1 (en) * | 2000-08-22 | 2002-03-21 | Bosch Gmbh Robert | Sensor arrangement in anti-friction roller bearing of vehicles, has sensors that are arranged suitably to generate surface acoustic wave corresponding to mechanical stresses acting on the bearing capsule |
DE10061923A1 (en) * | 2000-12-12 | 2002-06-13 | Feo Elektronik Gmbh | ergometer |
DE10323889A1 (en) * | 2003-05-27 | 2004-12-16 | Ehrfeld Mikrotechnik Ag | Rolling bearings with polymer electronics |
DE102004049724A1 (en) * | 2004-10-11 | 2006-04-20 | Sew-Eurodrive Gmbh & Co. Kg | Sensor especially to determine a physical quantity of a drive component has connection to energy source and contactless transmission to a receiving device |
DE60121295T2 (en) | 2000-01-27 | 2007-06-28 | Skf Engineering And Research Centre B.V. | WAREHOUSE MAINTENANCE |
DE102006051642A1 (en) * | 2006-11-02 | 2008-05-08 | Schaeffler Kg | Roller bearing e.g. linear bearing, has rolling unit arranged between two component parts form of roller, where roller is formed as measuring rolling unit that outputs measurement function apart from load carrying function |
-
2011
- 2011-01-13 DE DE102011002633A patent/DE102011002633A1/en not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4402136A1 (en) * | 1994-01-26 | 1995-07-27 | Telefunken Microelectron | Motor vehicle tyre parameter measuring system |
US5952587A (en) * | 1998-08-06 | 1999-09-14 | The Torrington Company | Imbedded bearing life and load monitor |
DE60121295T2 (en) | 2000-01-27 | 2007-06-28 | Skf Engineering And Research Centre B.V. | WAREHOUSE MAINTENANCE |
DE10017572A1 (en) * | 2000-04-10 | 2001-10-18 | Inst Mikrotechnik Mainz Gmbh | Rolling bearings with remote-sensing registration units |
DE10041097A1 (en) * | 2000-08-22 | 2002-03-21 | Bosch Gmbh Robert | Sensor arrangement in anti-friction roller bearing of vehicles, has sensors that are arranged suitably to generate surface acoustic wave corresponding to mechanical stresses acting on the bearing capsule |
DE10061923A1 (en) * | 2000-12-12 | 2002-06-13 | Feo Elektronik Gmbh | ergometer |
DE10323889A1 (en) * | 2003-05-27 | 2004-12-16 | Ehrfeld Mikrotechnik Ag | Rolling bearings with polymer electronics |
DE102004049724A1 (en) * | 2004-10-11 | 2006-04-20 | Sew-Eurodrive Gmbh & Co. Kg | Sensor especially to determine a physical quantity of a drive component has connection to energy source and contactless transmission to a receiving device |
DE102006051642A1 (en) * | 2006-11-02 | 2008-05-08 | Schaeffler Kg | Roller bearing e.g. linear bearing, has rolling unit arranged between two component parts form of roller, where roller is formed as measuring rolling unit that outputs measurement function apart from load carrying function |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014208597A1 (en) * | 2014-05-08 | 2015-04-16 | Schaeffler Technologies Gmbh & Co. Kg | roller bearing assembly |
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Legal Events
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R016 | Response to examination communication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20130801 |