公开(公告)号：US20250102017A1

公开(公告)日：2025-03-27

申请号：US18974199

申请日：2024-12-09

Applicant: Aktiebolaget SKF

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

IPC: F16C41/00 ,  F03D17/00 ,  G01R31/00

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-Miner 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. The process may be carried out by a computer having a processor and a memory.

公开(公告)号：US20230038874A1

公开(公告)日：2023-02-09

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 ,  G01L5/00

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：US20230025558A1

公开(公告)日：2023-01-26

申请号：US17864984

申请日：2022-07-14

Applicant: Aktiebolaget SKF

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

IPC: G01M13/04

Abstract: Disclosed is a sensor roller for monitoring a lubrication condition of a roller bearing, the sensor roller providing a measuring unit for measuring at least a temperature, a speed change and a load of the roller, and a processing unit for generating a temperature profile, a speed change profile and a load profile of the roller based on the measured temperature and speed change.

公开(公告)号：US11428590B2

公开(公告)日：2022-08-30

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 ,  F16C19/00 ,  G06F17/11 ,  G06F17/14 ,  G06F17/16 ,  G06F17/17 ,  G06F30/17 ,  G06F30/20 ,  G01M13/04 ,  F16C19/52

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：US11111955B2

公开(公告)日：2021-09-07

申请号：US16517810

申请日：2019-07-22

Applicant: Aktiebolaget SKF

Inventor： Defeng Lang ,  Ben Koperdraad

IPC: F16C41/00 ,  F16C19/52 ,  G01L1/24 ,  G01D5/353 ,  G01B11/16 ,  G01L5/00 ,  F16C33/58

Abstract: A method for fixing a fiber having a fiber Bragg grating sensor segment onto a component configured to undergo changes in strain and/or temperature. The method providing the steps of stretching at least a section of the fiber including the fiber Bragg grating sensor segment by a defined and calibrated preload into a preloaded condition, fixing the section of the fiber including the fiber Bragg grating sensor segment being in the preloaded condition on a carrier element, and fixing the carrier element onto the component, as well as a bearing device with such a fiber.

公开(公告)号：US11054338B2

公开(公告)日：2021-07-06

申请号：US16375960

申请日：2019-04-05

Applicant: Aktiebolaget SKF

Inventor： Defeng Lang ,  Hendrik Anne Mol ,  Florin Tatar

IPC: G01R27/26 ,  G01M13/04 ,  F16C19/52 ,  F16C41/00 ,  F16C33/46 ,  F16C33/38

Abstract: Condition monitoring a cage to detect cage damage by detecting if a conducting material applied to a cage is unbroken or broken. The basic principle of the invention is to integrate a completely passive LC circuit, having the conductive material, on the cage. The LC circuit is magnetically activated and it is externally detectable when conducting material is unbroken or broken. The conducting material of the passive LC circuit is easily broken or worn, being weaker than the cage material. The cage material is non-metallic, such as a polymer material or other suitable synthetic materials.

公开(公告)号：US10458551B2

公开(公告)日：2019-10-29

申请号：US15531161

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 ,  Hans-Joachim vom Stein

IPC: F16J15/3296

Abstract: A sealing assembly including an elastic seal lip having a movable part is provided. The seal lip is configured to be attached to a first part of a machine and to be in contact with a second part of the machine. At least one acceleration sensor is fixed to the movable part of the seal lip, and that assembly further includes a data processing device for processing data obtained from the acceleration sensor. The data processing device is configured to determine the orientation of the acceleration sensor in relation to the direction of gravity.

公开(公告)号：US20180038417A1

公开(公告)日：2018-02-08

申请号：US15658718

申请日：2017-07-25

Applicant: Aktiebolaget SKF

Inventor： Defeng Lang ,  Mariya Mansurova ,  Florin Tatar

IPC: F16C33/66 ,  F16C19/38

CPC classification number: F16C33/6633 ,  F16C19/38 ,  F16C19/52 ,  F16C23/086 ,  F16C33/6625 ,  F16C41/008 ,  F16C43/04 ,  F16C2210/02 ,  F16C2233/00 ,  F16N29/00

Abstract: An assembly providing a bearing, a lubricant and a contamination sensor for determining a level of contamination in the lubricant. The sensor includes an EM wave generator for generating an EM signal, and an EM sensing element arranged in contact with the lubricant. The EM sensing element receives the generated EM signal and transmits an output signal whose properties are responsive to real and imaginary parts of a complex relative permittivity of the lubricant. The output signal is received by an EM measuring device that measures first and second parameters of the output signal, which are respectively representative of the real and imaginary parts of the complex relative permittivity. The EM measuring device determines a level of water contamination in the lubricant, based on the measured first parameter alone and determines a level of metal particle contamination in the grease, based on the measured first and second parameters.

公开(公告)号：US20170045445A1

公开(公告)日：2017-02-16

申请号：US15105397

申请日：2013-12-17

Applicant: AKTIEBOLAGET SKF

Inventor： Florin Tatar ,  Defeng Lang

IPC: G01N21/3577 ,  G01N33/28 ,  G01N21/45

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 fibre 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 fibre being embedded in the sensor body and having an end face spaced from the reflecting surface across the gap. Light emitted from the optical fibre can pass through the sample of oil and be reflected by the reflecting surface back into the optical fibre. By interferometry of the respective signals, the condition of the oil can be determined.

Abstract translation: 用于油状态监测的检测器包括具有第一端和具有端面的第二端的光纤。 传感器体具有可容纳油的样品的间隙和反射表面，光纤的第二端嵌入传感器主体中，并且具有与穿过间隙的反射表面间隔开的端面。 从光纤发射的光可以通过油样并被反射面反射回光纤。 通过干涉测量各个信号，可以确定油的状态。