DE10324924B4 - Method for determining a load absorbed by a plain bearing with spherical or cylindrical bearing surfaces - Google Patents
Method for determining a load absorbed by a plain bearing with spherical or cylindrical bearing surfaces Download PDFInfo
- Publication number
- DE10324924B4 DE10324924B4 DE10324924.9A DE10324924A DE10324924B4 DE 10324924 B4 DE10324924 B4 DE 10324924B4 DE 10324924 A DE10324924 A DE 10324924A DE 10324924 B4 DE10324924 B4 DE 10324924B4
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- load
- sliding
- sensor
- plain 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.)
- Expired - Lifetime
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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
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
- F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
- F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
Verfahren zum Ermitteln einer von einem Gleitlager aufgenommenen Last (L), wobei das Gleitlager einen Gleitbelag (3) aufweist, der zwischen zwei Lagerringen (1, 2) des Gleitlagers mit sphärisch oder zylindrisch ausgebildeten Lagerflächen (4, 5) angeordnet ist, dadurch gekennzeichnet, dass ein Sensorsignal ausgewertet wird, das vom Abstand der beiden Lagerflächen (4, 5) voneinander abhängt und von wenigstens einem Sensor (8) erzeugt wird, der an einem der beiden Lagerringe (1, 2) befestigt ist.A method for determining a load (L) absorbed by a sliding bearing, the sliding bearing having a sliding coating (3) which is arranged between two bearing rings (1, 2) of the sliding bearing with spherical or cylindrical bearing surfaces (4, 5), characterized in that that a sensor signal is evaluated which depends on the distance between the two bearing surfaces (4, 5) and is generated by at least one sensor (8) which is attached to one of the two bearing rings (1, 2).
Description
Die Erfindung betrifft ein Verfahren zur Ermittlung einer von einem Gleitlager mit sphärisch oder zylindrisch ausgebildeten Lagerflächen aufgenommenen Last.The invention relates to a method for determining a load absorbed by a plain bearing with spherical or cylindrical bearing surfaces.
Gleitlager mit sphärischen oder zylindrischen Lagerflächen sind bereits vielfältig bekannt und zeichnen sich in der Regel dadurch aus, dass zwischen den aus einem harten und verschleißfesten Material bestehenden Lagerflächen ein Gleitbelag mit guten Gleiteigenschaften angeordnet ist, der in der Regel aus einem weicheren Material als die Lagerflächen besteht und während der Lebensdauer des Gleitlagers einem Verschleiß unterliegt. Durch diesen Verschleiß ändern sich sowohl die Einstellungen des Gleitlagers, wie beispielsweise die Lagerluft, als auch die Gleiteigenschaften. Dies kann dazu führen, dass das Gleitlager vorgegebene Mindestanforderungen im Laufe der Zeit nicht mehr erfüllt und somit unbrauchbar wird und ersetzt werden muss. Da Gleitlager häufig in einer geschlossenen Bauweise ausgeführt sind, ist der Gleitbelag in der Regel nicht oder allenfalls nur eingeschränkt zugänglich, so dass eine verlässliche Beurteilung des Zustands des Gleitbelags ohne wenigstens eine teilweise Demontage in der Regel nicht möglich ist.Plain bearings with spherical or cylindrical bearing surfaces are already widely known and are usually characterized by the fact that a sliding coating with good sliding properties is arranged between the bearing surfaces made of a hard and wear-resistant material, which is usually made of a softer material than the bearing surfaces and is subject to wear during the life of the plain bearing. As a result of this wear, both the settings of the slide bearing, such as the bearing clearance, and the sliding properties change. This can lead to the sliding bearing no longer meeting specified minimum requirements in the course of time and thus becoming unusable and having to be replaced. Since sliding bearings are often designed in a closed design, the sliding lining is generally not accessible, or at most only accessible to a limited extent, so that a reliable assessment of the condition of the sliding lining is usually not possible without at least partial dismantling.
In diesem Zusammenhang ist es aus der
Bei den Verschleißplatten ist angesichts der relativ großen Dickenabmessungen das Einbringen von Messbohrungen bzw. das Einbauen von Messwertaufnehmern problemlos möglich. Angesichts der in der Regel ungleich dünneren Gleitbeläge ist diese Vorgehensweise jedoch nicht auf Gleitlager mit sphärischen oder zylindrischen Lagerflächen übertragbar.With the wear plates, in view of the relatively large thickness dimensions, the introduction of measuring bores or the installation of measuring sensors is possible without any problems. However, in view of the generally unevenly thinner sliding linings, this procedure cannot be transferred to sliding bearings with spherical or cylindrical bearing surfaces.
Aus der
Aus der
Die
Aus der
Der Erfindung liegt die Aufgabe zu Grunde, die Ermittlung des aktuellen Lastzustandes der Gleitbeläge bei Gleitlagern mit sphärischen oder zylindrischen Lagerflächen zu erleichtern.The invention is based on the object of making it easier to determine the current load state of the sliding linings in sliding bearings with spherical or cylindrical bearing surfaces.
Diese Aufgabe wird durch die Merkmalskombination des Anspruchs 1 gelöst.This object is achieved by the combination of features of
Mit dem erfindungsgemäßen Verfahren wird eine von einem Gleitlager aufgenommene Last ermittelt, wobei das Gleitlager einen Gleitbelag aufweist, der zwischen zwei Lagerringen des Gleitlagers mit sphärisch oder zylindrisch ausgebildeten Lagerflächen angeordnet ist. Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, dass ein Sensorsignal ausgewertet wird, das vom Abstand der beiden Lagerflächen voneinander abhängt und von wenigstens einem Sensor erzeugt wird, der an einem der beiden Lagerringe befestigt ist.With the method according to the invention, a load absorbed by a sliding bearing is determined, the sliding bearing having a sliding coating which is arranged between two bearing rings of the sliding bearing with spherical or cylindrical bearing surfaces. The method according to the invention is characterized in that a sensor signal is evaluated which depends on the distance between the two bearing surfaces and is generated by at least one sensor which is attached to one of the two bearing rings.
Mit dem erfindungsgemäßen Verfahren besteht die Möglichkeit, ein und denselben Sensor sowohl für die Ermittlung des Verschleißzustands des Gleitbelags als auch der vom Gleitlager aufgenommenen Last zu verwenden.With the method according to the invention there is the possibility of using one and the same sensor both for determining the state of wear of the sliding lining and for determining the load absorbed by the sliding bearing.
In einem bevorzugten Ausführungsbeispiel wird die vom Gleitlager aufgenommene Last in einer Einbaulage des Gleitlagers ermittelt, in welcher der Sensor in einer Hauptlastzone oder in einer entlasteten Zone angeordnet ist. Diese Geometrie hat den Vorteil, dass lediglich ein Sensor erforderlich ist und dass die Auswertung des Sensorsignals relativ einfach ist.In a preferred exemplary embodiment, the load absorbed by the sliding bearing is determined in an installation position of the sliding bearing in which the sensor is arranged in a main load zone or in an unloaded zone. This geometry has the advantage that only one sensor is required and that the evaluation of the sensor signal is relatively simple.
Die vom Gleitlager aufgenommene Last kann aus einem Sensorsignal für eine vernachlässigbare Last oder einem daraus abgeleiteten Wert und einem Sensorsignal für die aktuelle Last ermittelt werden. Auf diese Weise kann der Einfluss des Verschleißzustands des Gleitbelags auf das Sensorsignal herausgerechnet werden.The load absorbed by the plain bearing can be determined from a sensor signal for a negligible load or a value derived therefrom and a sensor signal for the current load. In this way, the influence of the wear condition of the sliding lining on the sensor signal can be calculated.
Die Ermittlung der vom Gleitlager aufgenommenen Last kann auf Basis des Einfederverhaltens des Gleitbelags erfolgen. Durch das Einfedern des Gleitbelags wird die Belastung in eine Wegstrecke umgesetzt und ist somit relativ leicht messbar. Um möglichst präzise Messergebnisse zu erhalten ist es von Vorteil, wenn für das Gleitlager im Neuzustand unter einem definierten Lastzustand, vorzugsweise bei vernachlässigbarer Belastung des Gleitlagers, ein Sensorsignal ermittelt wird und als Referenzsignal gespeichert wird. Das Referenzsignal kann dann bei der späteren Ermittlung der vom Gleitlager aufgenommenen Last berücksichtigt werden.The load absorbed by the sliding bearing can be determined on the basis of the compression behavior of the sliding lining. The compression of the sliding coating converts the load into a distance and is therefore relatively easy to measure. In order to obtain measurement results that are as precise as possible, it is advantageous if a sensor signal is determined and stored as a reference signal for the plain bearing when it is new under a defined load condition, preferably with negligible load on the plain bearing. The reference signal can then be taken into account in the subsequent determination of the load absorbed by the plain bearing.
Die Erfindung wird im Folgenden anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher erläutert.The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawing.
Es zeigen:
-
1 ein Ausführungsbeispiel eines Gleitlagers in Schnittdarstellung, -
2 ,3 ,4 und5 das in1 dargestellte Ausführungsbeispiel des Gleitlagers für verschiedene Last- und Verschleißzustände jeweils in einer schematischen Schnittdarstellung.
-
1 an exemplary embodiment of a plain bearing in a sectional view, -
2 ,3 ,4th and5 this in1 illustrated embodiment of the plain bearing for different load and wear conditions each in a schematic sectional view.
Der Außenring
Im eingebauten Zustand des Gleitlagers ist der Außenring
Da das Material des Gleitbelags
Die
Der in
In
In
Zur Ermittlung des Verschleißzustandes des Gleitbelags
- Das Gleitlager wird durch Unterstützung der
Welle 13 oder andere Maßnahmen in einen unbelasteten Zustand gebracht. Streng genommen, wird der Gleitbelag zwar durch das Eigengewicht des Innenrings2 belastet. Die dadurch verursachte Belastung ist allerdings so gering, dass daraus keine nennenswerte Stauchung des Gleitbelags3 resultiert. In diesem unbelasteten Zustand wird der minimale Abstand d1 oder der maximale Abstand d2 zwischen den beiden Lagerflächen4 und5 mit Hilfe desSensors 8 ermittelt. Aus dem so ermittelten Wert kann beispielsweise durch Vergleich mit einem Referenzwert fürden Gleitbelag 3 im unverschlissenen Zustand der Verschleißzustand des Gleitbelags3 ermittelt werden. Um besonders genaue Ergebnisse zu erhalten, kann der Referenzwert individuell für das Gleitlager vorgegeben werden, indem mit dem Gleitlager im Neuzustand eine Messung unter sonst gleichen Bedingungen durchgeführt wird und das so ermittelte Sensorsignal als Referenzwert dokumentiert wird. Prinzipiell ist es auch möglich, den Verschleißzustand unter Belastung zumindest näherungsweise zu ermitteln. In diesem Fall wird zuvor der Referenzwert bei einer identischen Belastung erstellt.
- The plain bearing is supported by the shaft
13th or other measures brought into an unloaded state. Strictly speaking, the sliding lining is caused by the weight of theinner ring 2 burdened. However, the stress caused by this is so low that it does not result in any significant compression of the slidingcoating 3 results. In this unloaded state, the minimum distance d1 or the maximum distance d2 between the two bearing surfaces is4th and5 with the help of the sensor8th determined. The value determined in this way can be used, for example, by comparison with a reference value for the slidingcoating 3 in the unworn condition, the wear condition of the slidinglining 3 be determined. In order to obtain particularly accurate results, the reference value can be specified individually for the plain bearing by performing a measurement with the plain bearing when new under otherwise identical conditions and documenting the sensor signal determined in this way as a reference value. In principle, it is also possible to at least approximately determine the state of wear under load. In this case, the reference value is established beforehand for an identical load.
Zur Ermittlung der jeweils aktuell auf das Lager wirkenden Last ist es erforderlich, den Einfluss des Verschleißzustandes des Gleitbelags
Prinzipiell ist es auch möglich, den Sensor
Wenn mehrere Sensoren
Die mit dem erfindungsgemäßen Verfahren erlangten Informationen über den Verschleißzustand des Gleitbelags
Das Gleitlager kann in Abwandlung der beschriebenen Ausführungsbeispiele statt der sphärisch ausgebildeten Lagerflächen
Je nach Ausgestaltung des Gleitlagers kann der Sensor
BezugszeichenlisteList of reference symbols
- 11
- AußenringOuter ring
- 22
- InnenringInner ring
- 33
- GleitbelagSliding surface
- 44th
- äußere Lagerflächeouter storage area
- 55
- innere Lagerflächeinner storage area
- 66th
- AxialbohrungAxial bore
- 77th
- axiale Endflächeaxial end face
- 88th
- Sensorsensor
- 99
- AussparungRecess
- 1010
- Vertiefungdeepening
- 1111
- Kabelcable
- 1212th
- Steckerplug
- 1313th
- Wellewave
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10324924.9A DE10324924B4 (en) | 2003-06-03 | 2003-06-03 | Method for determining a load absorbed by a plain bearing with spherical or cylindrical bearing surfaces |
CNB2004100446004A CN1299016C (en) | 2003-06-03 | 2004-05-17 | Sliding bearing having spherical or columnar bearing surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10324924.9A DE10324924B4 (en) | 2003-06-03 | 2003-06-03 | Method for determining a load absorbed by a plain bearing with spherical or cylindrical bearing surfaces |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10324924A1 DE10324924A1 (en) | 2004-12-23 |
DE10324924B4 true DE10324924B4 (en) | 2021-08-26 |
Family
ID=33482382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10324924.9A Expired - Lifetime DE10324924B4 (en) | 2003-06-03 | 2003-06-03 | Method for determining a load absorbed by a plain bearing with spherical or cylindrical bearing surfaces |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1299016C (en) |
DE (1) | DE10324924B4 (en) |
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DE102005056983A1 (en) * | 2005-11-30 | 2007-05-31 | Schaeffler Kg | Hinge bearing`s service life extension method, involves equipping hinge bearing, rotating equipped hinge bearing until section of slide coating is in provided load region, and reassembling hinge bearing in rotated condition |
DE102006008176A1 (en) * | 2006-02-22 | 2007-08-30 | Ab Skf | Bearing arrangement for mounting impression roll in printing press, has sensor and exciter element, which are arranged on inner ring or on component which is connected to inner ring, where detecting unit detects and forwards signal |
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US20160238068A1 (en) * | 2015-02-12 | 2016-08-18 | Aktiebolaget Skf | Combination spherical and laminated bearing |
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GB2562489B (en) | 2017-05-16 | 2022-06-22 | Skf Aerospace France | Method of determining wear in a bearing surface |
GB2565555B (en) * | 2017-08-15 | 2020-07-08 | Mahle Int Gmbh | Sliding component and method |
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CN109455286A (en) * | 2018-11-15 | 2019-03-12 | 中国船舶重工集团公司第七〇九研究所 | A kind of ship stern support device of multifunctional unit |
DE102019216422A1 (en) * | 2019-10-24 | 2021-04-29 | Aktiebolaget Skf | Rolling bearings with an ultrasonic distance sensor |
US10975908B1 (en) | 2019-10-29 | 2021-04-13 | Schaeffler Monitoring Services Gmbh | Method and device for monitoring a bearing clearance of roller bearings |
FR3111985B1 (en) * | 2020-06-30 | 2022-11-25 | Hydromecanique & Frottement | Guidance device and mechanical system comprising such a device |
EP3992487A1 (en) * | 2020-10-30 | 2022-05-04 | Meritor Heavy Vehicle Braking Systems (UK) Limited | A guide assembly for a disc brake |
DE102020132081A1 (en) * | 2020-12-03 | 2022-06-09 | Schaeffler Technologies AG & Co. KG | Sensor unit for forming a sensor node in a wireless sensor network and wireless sensor network comprising such a sensor node |
DE102021106750A1 (en) | 2021-03-19 | 2022-09-22 | Schaeffler Technologies AG & Co. KG | Plain bearing and method for monitoring the condition of a plain bearing |
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US3102759A (en) | 1960-05-19 | 1963-09-03 | John T Stewart | Journal bearing wear detector |
DE2115506C3 (en) | 1971-03-31 | 1975-04-03 | Kloeckner-Werke Ag, 4100 Duisburg | |
JPS5618119A (en) | 1979-07-20 | 1981-02-20 | Hitachi Ltd | Life detection of oilless type solid lubricating material |
EP0028081A2 (en) | 1979-10-08 | 1981-05-06 | Hitachi, Ltd. | Method and apparatus for detecting frictional wear in plain metal bearings |
DE8210726U1 (en) | 1982-04-16 | 1982-08-12 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Wear measuring device for bearings |
GB2192949A (en) | 1986-07-25 | 1988-01-27 | Wickers Shipbuilding & Enginee | Indicating wear in bearings |
DE4222803A1 (en) | 1991-07-12 | 1993-01-21 | Nippon Thompson Co Ltd | BALL JOINT BEARING UNIT WITH MULTI-LAYERED SLIDING BUSH AND METHOD FOR THEIR PRODUCTION |
GB2264168A (en) | 1992-01-28 | 1993-08-18 | Bmt Defence Services Limited | Fibre-optic device for measuring wear in bearings |
EP0760434A1 (en) | 1995-07-31 | 1997-03-05 | The Torrington Company | Lined bearing with wear sensor |
DE19755000C1 (en) | 1997-12-11 | 1999-03-04 | Krupp Ag Hoesch Krupp | Wear measuring device for roller bearing |
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DE10019324C1 (en) | 2000-04-19 | 2001-07-26 | Skf Gmbh | Process for monitoring a bearing arrangement in continuous casting plant comprises measuring process parameter on the bearing, feeding the measured value to evaluation device, comparing measured value with stored value and releasing signal |
DE20104695U1 (en) | 2001-03-19 | 2001-09-20 | Corts Jochen | Bearing element, in particular plate-shaped plain bearing or guide element for roll stands, and measuring device |
DE10144269A1 (en) | 2001-09-08 | 2003-03-27 | Bosch Gmbh Robert | Sensor element for measuring a physical variable between two bodies which move relative to each other and are subjected to high tribological strain, whereby the element has very high wear resistance to increase its service life |
DE10231415A1 (en) | 2001-07-11 | 2003-04-30 | Sumitomo Wiring Systems | Wear detection sensor and brake element provided with it |
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CN87211853U (en) * | 1987-08-12 | 1988-06-08 | 张能刚 | Apparatus for monitoring oil film of sliding bearing and top clearance |
JP3342267B2 (en) * | 1995-10-27 | 2002-11-05 | 三菱重工業株式会社 | Pressure dam type journal bearing |
JP3504424B2 (en) * | 1996-02-26 | 2004-03-08 | 株式会社荏原製作所 | Bearing wear detector for induction motors |
JP2001323927A (en) * | 2000-05-17 | 2001-11-22 | Mitsubishi Electric Corp | Guide bearing device for rotary electric equipment |
-
2003
- 2003-06-03 DE DE10324924.9A patent/DE10324924B4/en not_active Expired - Lifetime
-
2004
- 2004-05-17 CN CNB2004100446004A patent/CN1299016C/en not_active Expired - Lifetime
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3102759A (en) | 1960-05-19 | 1963-09-03 | John T Stewart | Journal bearing wear detector |
DE2115506C3 (en) | 1971-03-31 | 1975-04-03 | Kloeckner-Werke Ag, 4100 Duisburg | |
JPS5618119A (en) | 1979-07-20 | 1981-02-20 | Hitachi Ltd | Life detection of oilless type solid lubricating material |
EP0028081A2 (en) | 1979-10-08 | 1981-05-06 | Hitachi, Ltd. | Method and apparatus for detecting frictional wear in plain metal bearings |
DE8210726U1 (en) | 1982-04-16 | 1982-08-12 | Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt | Wear measuring device for bearings |
GB2192949A (en) | 1986-07-25 | 1988-01-27 | Wickers Shipbuilding & Enginee | Indicating wear in bearings |
DE4222803A1 (en) | 1991-07-12 | 1993-01-21 | Nippon Thompson Co Ltd | BALL JOINT BEARING UNIT WITH MULTI-LAYERED SLIDING BUSH AND METHOD FOR THEIR PRODUCTION |
GB2264168A (en) | 1992-01-28 | 1993-08-18 | Bmt Defence Services Limited | Fibre-optic device for measuring wear in bearings |
EP0760434A1 (en) | 1995-07-31 | 1997-03-05 | The Torrington Company | Lined bearing with wear sensor |
DE19755000C1 (en) | 1997-12-11 | 1999-03-04 | Krupp Ag Hoesch Krupp | Wear measuring device for roller bearing |
US6080982A (en) | 1998-05-13 | 2000-06-27 | The United States Of America As Represented By The Secretary Of The Navy | Embedded wear sensor |
DE10019324C1 (en) | 2000-04-19 | 2001-07-26 | Skf Gmbh | Process for monitoring a bearing arrangement in continuous casting plant comprises measuring process parameter on the bearing, feeding the measured value to evaluation device, comparing measured value with stored value and releasing signal |
DE20104695U1 (en) | 2001-03-19 | 2001-09-20 | Corts Jochen | Bearing element, in particular plate-shaped plain bearing or guide element for roll stands, and measuring device |
DE10231415A1 (en) | 2001-07-11 | 2003-04-30 | Sumitomo Wiring Systems | Wear detection sensor and brake element provided with it |
DE10144269A1 (en) | 2001-09-08 | 2003-03-27 | Bosch Gmbh Robert | Sensor element for measuring a physical variable between two bodies which move relative to each other and are subjected to high tribological strain, whereby the element has very high wear resistance to increase its service life |
Also Published As
Publication number | Publication date |
---|---|
CN1573142A (en) | 2005-02-02 |
DE10324924A1 (en) | 2004-12-23 |
CN1299016C (en) | 2007-02-07 |
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