公开(公告)号：US12234863B2

公开(公告)日：2025-02-25

申请号：US17394608

申请日：2021-08-05

Applicant: AKTIEBOLAGET SKF

Inventor： Alireza Azarfar ,  Andreas Clemens van der Ham ,  Dominik Fritz ,  Stefan Engbers ,  Juergen Reichert ,  Defeng Lang

IPC: F16C41/00 ,  F16C33/34 ,  G01L1/16 ,  G01L5/00 ,  G01M13/04 ,  G01P1/02 ,  G01P1/12 ,  G01P15/00 ,  G06F7/44 ,  G06F7/485 ,  G06F7/487 ,  G06F17/11

Abstract: A method of determining the center of loading of a rolling element includes providing a rolling element body and at least three load sensors. The sensors are each positioned within a bore of the rolling element body at a separate distance from a reference position. Load measurements are taken with each one of the sensors at various positions about the circumference of the bearing and the center of loading is calculated at each one of the positions to determine the variation in axial loading about the bearing circumference.

公开(公告)号：US20200370600A1

公开(公告)日：2020-11-26

申请号：US16875137

申请日：2020-05-15

Applicant: AKTIEBOLAGET SKF ,  SKF Aerospace France S.A.S

Inventor： Yoann Hebrard ,  Defeng Lang ,  Jeroen van Diermen

IPC: F16C33/46 ,  F16C33/36 ,  F16C41/00

Abstract: A rolling bearing cage includes at least one cage side ring and a plurality of cage bars extending from the cage side ring so as to form a plurality of pockets, each pocket being defined between a separate pair of adjacent bars, for receiving rolling bodies of the rolling bearing. A cage breakage detection unit includes at least one conductive track and a module for wireless cage breakage monitoring. The cage has at least one recess, in which at least a prefabricated part of the cage breakage detection unit is inserted and fixed.

公开(公告)号：US10465799B2

公开(公告)日：2019-11-05

申请号：US15531056

申请日：2015-11-23

Applicant: Aktiebolaget SKF ,  SKF Economos Deutschland GmbH

Inventor： Defeng Lang ,  Muhammad Ahmer ,  Thomas Deigner ,  Jos Holsnijders ,  Sebastian Ziegler ,  Frank de Wit

IPC: G01M13/04 ,  F16J15/3296 ,  G01P15/18 ,  G01M13/005 ,  G01M13/045 ,  F16C33/78 ,  F16C41/00 ,  G01P1/02 ,  F16C19/52

Abstract: The invention provides a sealing assembly that includes an elastic seal lip having a movable part. The seal lip is configured to be attached to a first part of a machine and to be in sliding contact with a second part of the machine. It is proposed that at least one vibration sensor is fixed to the movable part of the seal lip.

公开(公告)号：US09702816B2

公开(公告)日：2017-07-11

申请号：US15105397

申请日：2013-12-17

Applicant: AKTIEBOLAGET SKF

Inventor： Florin Tatar ,  Defeng Lang

IPC: G01N21/3577 ,  G01J3/42 ,  G01N33/28 ,  G01N21/3554 ,  G01N21/359 ,  G01N21/45 ,  G01N21/85 ,  G01J3/02

CPC classification number: G01N21/3577 ,  G01J3/0218 ,  G01J3/42 ,  G01J3/45 ,  G01J3/4531 ,  G01N21/3554 ,  G01N21/359 ,  G01N21/45 ,  G01N21/8507 ,  G01N33/2847 ,  G01N33/2888 ,  G01N2201/0846

Abstract: A detector for oil condition monitoring includes an optical fiber having a first end and a second end having an end face. A sensor body has a gap in which a sample of the oil may be received and a reflecting surface, the second end of the optical fiber being embedded in the sensor body and having an end face spaced from the reflecting surface across the gap. Light emitted from the optical fiber can pass through the sample of oil and be reflected by the reflecting surface back into the optical fiber. By interferometry of the respective signals, the condition of the oil can be determined.

公开(公告)号：US20220341817A1

公开(公告)日：2022-10-27

申请号：US17708324

申请日：2022-03-30

Applicant: Aktiebolaget SKF

Inventor： Andreas Clemens van der Ham ,  Alireza Azarfar ,  Dominik Fritz ,  Stefan Engbers ,  Juergen Reichert ,  Defeng Lang

IPC: G01M13/04 ,  F16C41/00

Abstract: A process for determining the reliability of a sensorized bearing configured to measure load and speed is provided. The process includes the following steps. Bearing load and rotational speed are determined from data acquired from the sensorized bearing. Next, an array linking the determined load to the determined n.dm value is filled until that all available loads are parsed. Then a L10 life is determined for each load within a distribution based on the array. Finally, an overall L10 life is determined based on the Palmgren-Minor rule. The load distribution and the L10 lives a bearing reliability R for a given date is determined based on a Weibull curve and the overall L10 life.

公开(公告)号：US11248650B2

公开(公告)日：2022-02-15

申请号：US16875137

申请日：2020-05-15

Applicant: AKTIEBOLAGET SKF ,  SKF Aerospace France S.A.S

Inventor： Yoann Hebrard ,  Defeng Lang ,  Jeroen van Diermen

IPC: F16C33/46 ,  F16C41/00 ,  F16C19/52

Abstract: A rolling bearing cage includes at least one cage side ring and a plurality of cage bars extending from the cage side ring so as to form a plurality of pockets, each pocket being defined between a separate pair of adjacent bars, for receiving rolling bodies of the rolling bearing. A cage breakage detection unit includes at least one conductive track and a module for wireless cage breakage monitoring. The cage has at least one recess, in which at least a prefabricated part of the cage breakage detection unit is inserted and fixed.

公开(公告)号：US20210010883A1

公开(公告)日：2021-01-14

申请号：US16916235

申请日：2020-06-30

Applicant: AKTIEBOLAGET SKF

Inventor： Defeng Lang ,  Hendrik Anne Mol ,  Stijn van Eesbeek ,  Henricus van Genuchten

IPC: G01L5/00 ,  F16C19/52 ,  F16C19/18

Abstract: A method for estimating a bearing load in a bearing having a first ring, a second ring and a row of rolling elements arranged between the first ring and the second ring, the method including: equipping the first ring with at least one strain sensor probe, transmitting a strain signal waveform from the at least one strain sensor probe to an electronic control unit, extracting shape information of the waveform of the strain signal using a first harmonic component (u) and a second harmonic component (v) of the strain signal, and calculating a bearing load estimation as a polynomial function of the first and second harmonic components (u, v) of the strain signal.

公开(公告)号：US09989097B2

公开(公告)日：2018-06-05

申请号：US15278082

申请日：2016-09-28

Applicant: Aktiebolaget SKF

Inventor： Yoann Hebrard ,  Defeng Lang ,  Andreas Karlsson ,  Victor Martinez ,  Frank de Wit

IPC: F16C41/00 ,  F16C33/46 ,  F16C33/56 ,  F16C33/38 ,  F16C33/44 ,  G01M13/04 ,  H01Q7/00 ,  H01Q1/27

CPC classification number: F16C41/008 ,  F16C19/386 ,  F16C19/52 ,  F16C33/3831 ,  F16C33/44 ,  F16C33/4611 ,  F16C33/4635 ,  F16C33/56 ,  F16C41/002 ,  F16C2202/40 ,  F16C2233/00 ,  F16C2300/02 ,  G01M13/04 ,  H01Q1/27 ,  H01Q7/00

Abstract: The invention relates to a bearing cage including a bearing cage main body made of a polymer material and having pockets for receiving at least one row of rolling elements of a bearing. The cage is provided with a passive resonant circuit including an antenna coil attached to the cage main body. It is proposed that the antenna coil is formed as a conductive layer directly attached to the cage material of the bearing cage main body and is designed so as to have a breaking point less than or equal to a breaking point of the cage material. Thus, a rupture in the cage main body ruptures the antenna coil, changing the resonance behavior of the passive resonant circuit.

公开(公告)号：US20170322095A1

公开(公告)日：2017-11-09

申请号：US15531130

申请日：2015-11-23

Applicant: Aktiebolaget SKF

Inventor： Defeng Lang ,  Muhammaad Ahmer ,  Frank de Wit

IPC: G01L5/00 ,  G01L1/04 ,  G01P15/18 ,  F16J15/3296

Abstract: The invention relates to a load measuring device including a deformable component configured to be deformed under a load to be measured and a sensor assembly attached to a first portion of the deformable component and to a method for determining load using such a sensor assembly. It is proposed that the sensor assembly includes at least one acceleration sensor configured to detect a change in an orientation of the first portion with regard to the direction of gravity and that the deformable component is formed as a seal configured to be in sliding contact with a component configured to rotate in relation to the seal.

公开(公告)号：US20230287936A1

公开(公告)日：2023-09-14

申请号：US18111860

申请日：2023-02-20

Applicant: Aktiebolaget SKF

Inventor： Alireza Azarfar ,  Andreas Clemens Van Der Ham ,  Dominik Fritz ,  Stefan Engbers ,  Juergen Reichert ,  Defeng Lang

IPC: F16C41/00 ,  F16C19/36

CPC classification number: F16C41/00 ,  F16C19/364 ,  F16C2233/00

Abstract: A monitoring system is proposed.
The monitoring system comprises a rolling bearing comprising a first ring and a second ring (7, 8) capable of rotating concentrically relative to one another, and at least one row of rolling elements (5) interposed between a first raceway and a second raceway respectively provided on the first and second rings, wherein:



at least one of the rolling elements (5) of the rolling bearing is a sensorized rolling element comprises at least one sensor measuring at least one parameter of the sensorized rolling element and a wireless transmitter to transmit the measurements of the sensor, and wherein the system comprises:
a receiving device (21) configured to receive the measurements of the sensor of the sensorized rolling element of the rolling bearing, and
a processing device (23) configured to process the measurements received by the receiving device to detect damage and/or a contamination of the rolling bearing (2).