• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to an instrumented bearing (1), comprising: an outer ring (2) and an inner ring (3) between which is defined a rolling chamber (4); rolling bodies (5) disposed in the rolling chamber (4) being held by a rolling cage (6); and a measuring device (10) including at least one sensor (11) adapted to measure at least one operating parameter of the instrumented bearing (1). The instrumented bearing (1) is characterized in that the measuring device (10) is at least partially integrated with the rolling cage (6). The invention also relates to a method of manufacturing such an instrumented bearing (1).
    公开号:FR3018569A1
    申请号:FR1452005
    申请日:2014-03-11
    公开日:2015-09-18
    发明作者:Olivier Verbe；Laurent Varnoux
    申请人:SKF AB；
    IPC主号:
    专利说明:

    [0001] The present invention relates to an instrumented bearing, as well as to a method of manufacturing such an instrumented bearing. In a conventional manner, a bearing comprises an outer ring and an inner ring between which is defined a rolling chamber. The bearing also comprises rolling bodies arranged in the rolling chamber being held by a rolling cage.
    [0002] The bearing may be associated with a measuring device, including a sensor adapted to measure a characteristic parameter of the operation of the bearing, for example a temperature, a speed, an acceleration, a level of lubrication, a vibratory or acoustic amplitude. The measuring device is generally disposed outside the bearing, for example in a housing receiving the outer ring of the bearing or on a shaft receiving the inner ring of the bearing. The measurements are thus influenced by the bearing environment. In addition, a dedicated space must be provided to position the measuring device near the bearing. The object of the present invention is to provide an improved instrumented bearing. For this purpose, the subject of the invention is an instrumented bearing, comprising: an outer ring and an inner ring between which is defined a rolling chamber; rolling bodies disposed in the rolling chamber being held by a rolling cage; and a measuring device including at least one sensor adapted to measure at least one operating parameter of the instrumented bearing. The instrumented bearing is characterized in that the measuring device is at least partially integrated with the rolling stand. Thus, the invention reduces the size of the instrumented bearing including the measuring device, while improving the accuracy of measurements. Advantageously, the measurements are made in the rolling chamber and not outside the bearing. When monitoring the bearing in use, the influence of its environment is attenuated. According to other advantageous features of the invention, taken separately or in combination: The sensor is integrated with the rolling cage in an intermediate space between two rolling bodies. - The sensor is integrated into the roll cage by overmolding. - The sensor is integrated into the roll cage by clipping. - The measuring device comprises several sensors, each adapted to measure at least one operating parameter of the instrumented bearing. - The measuring device includes a wireless transmitter built into the sensor. - The measuring device comprises a wireless transmitter which is separate from the sensor and is integrated with the rolling cage. - The measuring device comprises at least one counterweight integrated in the rolling cage. - The measuring device comprises at least one cable or antenna which extends along the rolling cage in the rolling chamber. The invention also relates to a method of manufacturing an instrumented bearing as mentioned above. The method comprises the following steps: a) manufacturing the outer ring, the inner ring and the rolling bodies; b) integrating at least part of the measuring device into the rolling stand; c) assemble the instrumented bearing. The invention will be better understood on reading the description which follows, given solely by way of nonlimiting example and with reference to the appended drawings, in which: FIG. 1 is a side view of an instrumented bearing conforming to FIG. the invention in an axial direction; Figure 2 is a section along the line II-II in Figure 1; and Figure 3 is an enlarged view of detail III in Figure 1. In Figures 1 to 3 is shown an instrumented bearing 1 according to the invention. The bearing 1 comprises an outer ring 2 and an inner ring 3, between which is defined a bearing chamber 4. The bearing 1 has a central axis X1, forming the relative rotational axis of the rings 2 and 3. The bearing 1 comprises rolling bodies 5 arranged in the chamber 4, being held by a bearing cage 6. In the example of Figures 1 to 3, the rolling bodies 5 are balls. Alternatively, the rolling bodies 5 may be other than balls, for example rollers or needles. The rolling cage 6 comprises holding portions 7 surrounding the rolling bodies 5, as well as intermediate portions 8 connecting the holding portions 7. In the example of Figures 1 to 3, the cage 6 may be molded of plastic. Alternatively, the cage 6 may be metal. The bearing 1 also comprises a measuring device 10, adapted to measure at least one characteristic parameter of the operation of the bearing 1.
    [0003] In the context of the invention, the device 10 is at least partly integrated with the roll cage 6, as detailed below. Preferably, as in the example of Figures 1 to 3, the device 10 is entirely disposed in the rolling chamber 4 delimited between the rings 2 and 3. The device 10 comprises a first sensor 11, a second sensor 12 and a cable 13 connecting the two sensors 11 and 12. The cable 13 is shown in broken lines in Figure 1 only for the sake of simplification. Preferably, to balance the device 10 and therefore the bearing 1, the sensors 11 and 12 are disposed on either side of the axis X1, that is to say distributed at 180 degrees about this axis X1. Each of the sensors 11 and 12 is adapted to measure at least one characteristic parameter of the operation of the bearing 1. The explanations given below for the sensor 11 also apply to the sensor 12. The sensor 11 may comprise one or more measuring cells , each adapted to measure an operating parameter of the bearing 1. As non-limiting examples, the parameters may be chosen from: a temperature, a rotational speed, an acceleration, a lubrication level, a vibratory or acoustic amplitude. The measurements are made in the immediate environment of the sensor 11, that is to say in the rolling chamber 4. Preferably, the sensor 11 is integrated with the rolling cage 6. As shown in FIG. sensor 11 is disposed in a cavity 9 provided for this purpose in an intermediate portion 8 between two rolling bodies 5. The sensor 11 may be integrated in the cavity 9 by overmoulding during the manufacture of the cage 6. Alternatively, the sensor 11 may be clipped into the cavity 9. Alternatively or in addition to the clipping, the sensor 11 may be glued into the cavity 9.
    [0004] According to a variant not shown, the sensor 11 can be mounted on the rolling stand 6, that is to say be placed on one of the holding portions 7 and / or on one of the intermediate portions 8 of the 6. For example, the sensor 11 may be adhered to an outer surface of one of the intermediate portions 8. Preferably, the measuring device 10 comprises at least one wireless transmitter directly integrated with the sensor 11. In particular, The wireless transmitter can be of the RFID transmitter type ("Radio Frequency Identification"). In the same envelope, the sensor 11 may also include a signal processing unit disposed between the measuring cell and the wireless transmitter, as well as a power supply unit. Alternatively, the measuring device 10 may comprise a sensor 11 and a wireless transmitter 112 connected by a cable 13. The transmitter 112 is distinct from the sensor 11 and is integrated with the rolling stand 6. In the same envelope, the Transmitter 112 may also include a signal processing unit and a power supply unit. According to another variant, the measuring device 10 may comprise two sensors 11 and 12 devoid of integrated wireless transmitter, as well as an antenna 113 of circular shape which extends along the cage 6 in the chamber 5, between the sensors 11 and 12. The antenna can be fixed on the outside of the cage 6 or integrated directly into the cage 6, for example by overmolding. According to another variant, the measuring device 10 comprises a sensor 11 and a counterweight 212 integrated in the roll cage 6. In order to balance the device 10 and therefore the bearing 1, the sensor 11 and the counterweight 212 are arranged on both sides. other of the axis X1, in other words spread out 180 degrees about this axis X1. When the device 10 comprises two or more sensors integrated in the cage 6, counterweights may be distributed around the periphery of the cage 6 accordingly.
    [0005] Thanks to the invention, the parameters associated with the instrumented bearing 1 are measured as close as possible to the functional zone of the bearing 1, in the rolling chamber 4, which makes it possible to obtain relevant and accurate measured values. The size of the instrumented bearing 1 is optimized. The number of cabling is reduced, especially for power supply and data transmission. According to a particular application, the invention makes it possible to analyze parameters related to the lubrication of the bearing 1, even when this bearing 1 is protected by insulating members the rolling chamber 4 from the outside ("capped bearing" in English) .
    [0006] The invention also relates to a method of manufacturing an instrumented bearing 1. The method comprises a step a) of manufacturing the outer ring 2, the inner ring 3 and the rolling bodies 5. The method also comprises a step b) consisting of to integrate at least part of the measuring device 10 to the rolling cage 6. In practice, the cage 6 can be manufactured before step b), together with the elements 2, 3 and 5, or the cage 6 can be manufactured during step b), for example in the case where the elements 11, 12 and / or 13 are integrated in the cage 6 by overmoulding. The method finally comprises a step c) of assembling the instrumented bearing 1. Step a) can be performed before or after step b). Step c) is performed after steps a) and b). The instrumented bearing 1 and in particular the measuring device 10 may be shaped differently from Figures 1 to 3 and variants mentioned above without departing from the scope of the invention. Whatever the embodiment of the invention, the measuring device 10 includes at least one sensor 11 and is at least partially integrated with the roll cage 6. In addition, the technical characteristics of the various embodiments and variants mentioned above may be, in whole or in part, combined. Thus, the instrumented bearing 1 can be adapted in terms of cost, functionality, size and performance.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Instrumented bearing (1), comprising: an outer ring (2) and an inner ring (3) between which is defined a rolling chamber (4); rolling bodies (5) disposed in the rolling chamber (4) being held by a rolling cage (6); and a measuring device (10) including at least one sensor (11) adapted to measure at least one operating parameter of the instrumented bearing (1); characterized in that the measuring device (10) is at least partially integrated with the rolling cage (6).
    [0002]
    2. Instrumented bearing (1) according to claim 1, characterized in that the sensor (11) is integrated with the rolling cage (6) in an intermediate space (8) between two rolling bodies (5).
    [0003]
    3. instrumented bearing (1) according to claim 1 or 2, characterized in that the sensor (11) is integrated in the roll cage (6) by overmolding.
    [0004]
    4. instrumented bearing (1) according to claim 1 or 2, characterized in that the sensor (11) is integrated with the rolling cage (6) by clipping.
    [0005]
    Instrumented bearing (1) according to one of the preceding claims, characterized in that the measuring device (10) comprises a plurality of sensors (11, 12) each adapted to measure at least one operating parameter of the instrumented bearing (1 ).
    [0006]
    6. instrumented bearing (1) according to one of claims 1 to 5, characterized in that the measuring device (10) comprises a wireless transmitter integrated in the sensor (11).
    [0007]
    Instrumented bearing (1) according to one of claims 1 to 5, characterized in that the measuring device (10) comprises a wireless transmitter (112) which is separate from the sensor (11) and is integrated in the cage rolling (6).
    [0008]
    Instrumented bearing (1) according to one of the preceding claims, characterized in that the measuring device (10) comprises at least one counterweight (212) integrated with the rolling cage (6).
    [0009]
    Instrumented bearing (1) according to one of the preceding claims, characterized in that the measuring device (10) comprises at least one cable (13) or antenna (113) which extends along the cage of bearing (6) in the rolling chamber (5).
    [0010]
    10. A method of manufacturing an instrumented bearing (1) according to one of the preceding claims, characterized in that the method comprises the following steps: a) manufacture the outer ring (2), the inner ring (3) and the rolling bodies (5); b) at least partially integrating the measuring device (10) with the rolling stand (6); c) assemble the instrumented bearing (1).
    类似技术:
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    同族专利:
    公开号 | 公开日
    CN104912916A|2015-09-16|
    DE102015103408A1|2015-09-17|
    FR3018569B1|2016-12-09|
    US20150260229A1|2015-09-17|
    US9752623B2|2017-09-05|
    CN104912916B|2019-06-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20060070462A1|2003-05-22|2006-04-06|Takeshi Takizawa|Load measuring device for rolling bearing unit and load measuring rolling bearing unit|
    WO2006083736A1|2005-02-01|2006-08-10|The Timken Company|Bearing with cage mounted sensors|
    DE102010023011A1|2010-06-08|2011-12-08|Carl Freudenberg Kg|Cage for guiding rolling elements of e.g. rotary or linear roller bearing, has electromagnetic sensor arranged at body of cage for emitting electromagnetic radiation and determining spectrum of received radiation|
    US5234269A|1989-02-24|1993-08-10|The Torrington Company|Antifriction bearing with a clip-on sensor|
    FR2698421B1|1992-11-24|1995-06-02|Skf France|Housing for radial fixing of a bearing.|
    FR2740186B1|1995-10-20|1997-11-28|Roulements Soc Nouvelle|DEVICE FOR FIXING A SENSOR ON A BEARING WITH ROLLING BODIES|
    DE19710337A1|1997-03-13|1998-09-24|Fag Automobiltechnik Ag|Roller bearing incorporating rotation measuring device e.g. for automobile wheel bearing|
    US6324899B1|1998-04-02|2001-12-04|Reliance Electric Technologies, Llc|Bearing-sensor integration for a lubrication analysis system|
    DE10017572B4|2000-04-10|2008-04-17|INSTITUT FüR MIKROTECHNIK MAINZ GMBH|Rolling bearings with remote sensing units|
    JP2004263724A|2003-02-14|2004-09-24|Ntn Corp|Machine parts using ic tag|
    CN100442041C|2003-05-22|2008-12-10|日本精工株式会社|Load measuring device for rolling bearing unit and load masuring rolling bearing unit|
    JP2005084962A|2003-09-09|2005-03-31|Ntn Corp|Machine element component with ic tag|
    JP4530888B2|2005-03-18|2010-08-25|Ｎｔｎ株式会社|Antenna mounting structure of bearing with antenna|
    FR2886361B1|2005-05-31|2007-07-20|Snr Roulements Sa|SEALING DEVICE FOR BEARING BEARING COMPRISING A MEANS OF IDENTIFICATION|
    EP2136212A4|2007-03-28|2012-07-25|Ntn Toyo Bearing Co Ltd|Rotation sensor|
    US8237431B2|2007-07-05|2012-08-07|Terry Fruehling|Wheel speed sensor|
    DE102007035550B4|2007-07-28|2014-07-24|Schaeffler Technologies Gmbh & Co. Kg|Sealing element for a bearing, in particular a rolling bearing|
    DE102007051237A1|2007-10-26|2009-04-30|Schaeffler Kg|Method and device for adjusting the bearing clearance or preload of rolling bearing assemblies|DE102015216472B4|2015-08-28|2018-05-17|Aktiebolaget Skf|Bearing arrangement with a Sensorwälzkörper|
    EP3150875A1|2015-09-30|2017-04-05|Aktiebolaget SKF|Bearing cage with antenna and method for detecting failure of a bearing cage|
    DE102016116113A1|2016-08-30|2018-03-01|Thyssenkrupp Ag|Bearings and procedures for wear monitoring and / or load measurement|
    CN106969917B|2017-05-25|2018-11-23|兰州理工大学|The load charger of Tribology in Rolling Bearing test|
    DE102019005703A1|2019-08-11|2021-02-11|MPT GROUP GmbH|Device for testing and monitoring the function of a roller bearing cage for holding and guiding the rolling elements of a roller bearing|
    WO2021097751A1|2019-11-21|2021-05-27|舍弗勒技术股份两合公司|Temperature sensor bearing assembly|
    法律状态:
    2016-03-31| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-27| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-29| PLFP| Fee payment|Year of fee payment: 5 |
    2019-04-01| PLFP| Fee payment|Year of fee payment: 6 |
    2019-11-15| RN| Application for restoration|Effective date: 20191010 |
    2019-11-22| FC| Favourable decision of inpi director general on an application for restauration.|Effective date: 20191010 |
    2020-03-26| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-26| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1452005A|FR3018569B1|2014-03-11|2014-03-11|INSTRUMENT BEARING AND METHOD OF MANUFACTURING SUCH AN INSTRUMENT BEARING|FR1452005A| FR3018569B1|2014-03-11|2014-03-11|INSTRUMENT BEARING AND METHOD OF MANUFACTURING SUCH AN INSTRUMENT BEARING|
    CN201510097428.7A| CN104912916B|2014-03-11|2015-03-05|The method of rolling bearing and this rolling bearing of manufacture with measuring device|
    DE102015103408.5A| DE102015103408A1|2014-03-11|2015-03-09|INSTRUMENTED BEARING AND MANUFACTURING METHOD OF SUCH INSTRUMENTATED BEARING|
    US14/644,226| US9752623B2|2014-03-11|2015-03-11|Instrumented bearing and method to manufacture such a bearing|
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