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891 条记录 (耗时 0.021 秒)

    DECISION OF FAULTY BEARING
    34.
    发明公开
    DECISION OF FAULTY BEARING 审中-公开

    公开(公告)号：EP3588049A1

    公开(公告)日：2020-01-01

    申请号：EP18180093.9

    申请日：2018-06-27

    申请人： ABB Schweiz AG

    发明人： SAARINEN, Kari

    IPC分类号： G01M13/04

    摘要： There is provided mechanisms for deciding whether a bearing is faulty or not. A method is performed by a controller. The method comprises obtaining, as a measurement signal, metal particles counting data, where the metal particles counting data indicates number of metal particles present in lubrication oil of the bearing per time unit. The method comprises differentiating the measurement signal, resulting in a differentiated measurement signal. The method comprises deciding, depending on how large share of a probability density estimate of the differentiated measurement signal is above a threshold value, whether the bearing is faulty or not.

    VERFAHREN UND VORRICHTUNG ZUR BEWERTUNG DER LEBENSDAUER EINES LAGERS
    35.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR BEWERTUNG DER LEBENSDAUER EINES LAGERS 审中-公开

    公开(公告)号：EP3550277A1

    公开(公告)日：2019-10-09

    申请号：EP17876406.4

    申请日：2017-11-01

    申请人： Schaeffler Technologies AG & Co. KG

    发明人： ARIMA, Gilson ,  MA, Zikui ,  GUO, Lei ,  WEI, Lai ,  HU, Hualiang ,  HUANG, Yunsheng

    IPC分类号： G01M13/04

    摘要： Ein Verfahren und eine Vorrichtung für die Bewertung der Lebensdauer eines Lagers, wobei das Verfahren Folgendes umfasst: die Ermittlung aktueller Betriebsbedingungen des Lagers; die Erfassung eines aktuellen Vibrationssignals des Lagers unter den aktuellen Betriebsbedingungen und die Berechnung eines aktuellen Vibrationswerts des Lagers; die Ermittlung einer dem aktuellen Vibrationswert des Lagers entsprechenden aktuellen Schälungsfläche der Lageroberfläche sowie einer aktuellen Schälungsrate des Lagers unter den aktuellen Betriebsbedingungen; und die Ermittlung einer Restlebensdauer des Lagers anhand der aktuellen Schälungsfläche der Lageroberfläche und der aktuellen Schälungsrate des Lagers. Die obige Lösung ist in der Lage, im Prozess der Bewertung der Lebensdauer eines Lagers eine Beeinträchtigung des regulären Betriebs der Ausrüstung zu vermeiden.

    A CONDITION MONITORING SYSTEM
    36.
    发明公开
    A CONDITION MONITORING SYSTEM 审中-公开

    公开(公告)号：EP3527961A1

    公开(公告)日：2019-08-21

    申请号：EP19162332.1

    申请日：2012-07-11

    申请人： S.P.M. Instrument AB

    发明人： HEDIN, Lars-Olov Elis

    IPC分类号： G01H1/00 ,  G01N29/14 ,  F16N29/00 ,  F16C1/24 ,  G01M13/04

    摘要： A method of operating an apparatus for analysing the condition of a machine part rotating with a speed of rotation (f ROT , V r ), comprising the steps of:
    receiving a first digital signal (S MD , S R , S F ) dependent on mechanical vibrations emanating from rotation of said part;
    analysing said first digital signal so as to detect peak amplitude values (A PL ) during a finite time period (T Pm ), said finite time period corresponding to a predetermined amount (R S ) of revolution of said rotatable part; said predetermined amount (R S ) of revolution corresponding to at least one revolution of said monitored rotatable part;
    defining a plurality of amplitude ranges, each amplitude range corresponding to a peak occurrence frequency of more than one peak per revolution;
    sorting said detected peak amplitude values (Ap) into corresponding amplitude ranges so as to reflect occurrence of detected peak amplitude values (Ap) within said plurality of amplitude ranges;
    establishing a peak amplitude value (A PL ) for detected peaks having an occurrence frequency of about N L peaks per revolution, said occurrence frequency value N L being a number higher than one.

    A BEARING ARRANGEMENT AND A WIND TURBINE
    37.
    发明公开
    A BEARING ARRANGEMENT AND A WIND TURBINE 审中-公开

    公开(公告)号：EP3514397A1

    公开(公告)日：2019-07-24

    申请号：EP18152225.1

    申请日：2018-01-18

    申请人： Siemens Gamesa Renewable Energy A/S

    发明人： Elmose, Soeren Forbech ,  Pedersen, Björn

    IPC分类号： F16C17/24 ,  F03D80/70 ,  F03D17/00 ,  F16C17/02 ,  F16C17/04 ,  F16C33/26 ,  G01B17/02 ,  G01M13/04 ,  F16C41/00 ,  F16C43/02

    摘要： A bearing arrangement (10) for a wind turbine (1), comprising a first portion (11), a second portion (12), and a sound wave sensor (13) which is configured to detect a thickness (14) of the second portion (12), wherein one of the first portion (11) and the second portion (12) is movable relative to the other of the first portion (11) and the second portion (12).
    In contrast to known bearing arrangements for wind turbines (1), the thickness (14) of the second portion (12) which for example is exposed to wear may be actively detected. Thus, the information of the thickness (14) is available at any time. Hence, a demand of an exchange of the second portion (12) can be precisely predicted and determined.