• 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:
    Bearing comprising a first ring (2) and a second ring (3), able to rotate concentrically with respect to each other, equipped with at least one onboard device (4) for detecting the displacement of said rings, one of which relative to one another, this detection device comprising at least one encoder element (5) mounted on the first ring (2), and at least one sensor element (6) mounted on the second ring (3), in view of the encoder element, said encoder element (5) comprising at least one linear ribbon (7) disposed on a cylindrical surface (8) of said first ring (2); bearing in which the first ring (2) is provided with at least one retaining bar (11), which extends above said ribbon (7).
    公开号:FR3041396A1
    申请号:FR1558756
    申请日:2015-09-17
    公开日:2017-03-24
    发明作者:Michel Nicolas
    申请人:SKF AB；
    IPC主号:
    专利说明:

    Bearing of which a ring is provided with retaining strips of a coded ribbon
    The present invention relates to the field of bearings comprising an inner ring and a concentric outer ring, able to rotate relative to each other.
    In particular, the invention relates to the field of bearings, in particular bearing, large diameter, to withstand high axial and radial loads, used in particular in machines or facilities to form orientation bearings with vertical axes of rotation for example, tunnel boring machines or mining machines.
    Patent EP 0 814 338 discloses a bearing in which the inner ring is provided with a circumferential ribbon-shaped encoder element and the outer ring is provided with a sensor element facing the encoder element, to detect the rotation said rings relative to each other.
    In practice, there is a risk of taking off the ribbon. In case of take-off, on the one hand the detection is obviously no longer possible and on the other hand the tape removed is an obstacle to the operation of the bearing. An expensive intervention requiring a stop for disassembly / reassembly of the machine is then necessary.
    The present invention aims to overcome the above disadvantages.
    According to one embodiment of the invention, there is provided a bearing which comprises a first ring and a second ring, able to rotate concentrically with respect to one another.
    The bearing is equipped with at least one onboard device for detecting the displacement of said rings relative to one another, this detection device comprising at least one encoder element mounted on the first ring and at least one sensor element. mounted on the second ring, opposite the encoder element.
    Said encoder element comprises at least one linear ribbon disposed on a cylindrical surface of said first ring.
    Said first ring is provided with at least one retaining bar which extends above said ribbon.
    Said retaining bar may comprise an axial portion extending axially above said ribbon and a radial end portion which faces a radial surface of the first ring.
    Said end portion can be fixed to the first ring by at least one axial screw.
    Said retaining bar may comprise another radial end portion facing another radial surface of the first ring, so that the bar is in the form of a stirrup straddling an annular portion of the first Ring.
    Said other radial end portion may be provided with an end portion engaged in an annular groove of the first ring.
    Said axial portion of said retaining bar may bear against a cylindrical surface of the first ring.
    Said tape can be placed inside an annular groove of the first ring.
    Said retaining bar can match the corresponding shape of the first ring.
    Said ribbon can be magnetized, successively in poles (+) and in poles (-), said retaining bar being made of a non-magnetic material.
    A plurality of retaining bars may be distributed circumferentially to the first ring.
    A bearing equipped with a detection device will now be described as an exemplary embodiment, illustrated by the drawing in which: - Figure 1 shows a partial section of a bearing according to the present invention; - Figure 2 shows a partial perspective view of an inner ring of the bearing of Figure 1; and FIG. 3 represents an alternative embodiment of the bearing of FIG. 1.
    As illustrated in Figures 1 and 2, a bearing 1 comprises an inner ring 2 and an outer ring 3, which are arranged concentrically and able to rotate relative to each other along an axis (not shown).
    The bearing 1 can be a rolling bearing, the rings 2 and 3 then being connected by at least one row of rolling elements (not shown), or can be a sliding bearing.
    The bearing 1 is equipped with an on-board displacement detection device 4 capable of detecting rotational and / or axial displacements of the rings 2 and 3 with respect to one another.
    The detection device 4 comprises an encoder element 5 mounted on the inner ring 2 and a sensor element 6 mounted on the outer ring 3, facing the encoder element 5. The encoder element 5 comprises a circumferential linear encoder tape 7 arranged flat on a cylindrical surface 8 of the inner ring 2 and fixed for example by gluing. Advantageously, this cylindrical surface 8 constitutes the bottom of an annular recess 9 arranged in a cylindrical surface 10 of the inner ring 2. The annular recess 9 is preferably dimensioned to receive without play the linear ribbon 7, the latter flush with the surface cylindrical 10 of the ring 2.
    The inner ring 2 is provided with a plurality of strips 11 locally retaining the encoder ribbon 7, which are spaced circumferentially.
    Each retaining strip 11 comprises an axial portion 12 which extends above the encoder ribbon 7 and bears, axially on either side of the recess 8, locally on the cylindrical surface 10 and, preferably , on the encoder ribbon 7.
    Each retaining strip 11 further comprises a radial end portion 13 which extends radially from an edge of the axial portion 12 towards the inside and which bears against a radial annular surface 14 of the inner ring 2. In section, the axial portion 12 and the radial end portion 13 form an L.
    The axial portion 12 has a cylindrical shape and matches the cylindrical shape of the cylindrical surface 10 of the inner ring. The radial end portion 13 may have a cylindrical inner edge.
    Each retaining strip 11 furthermore preferably comprises a radial end portion 15 which extends radially from the other edge of the axial portion 12 towards the inside and which faces a radial annular surface 16 of the inner ring 2 and preferably supported on this surface 16. The retaining bar 11 is then in the form of a U-shaped section stirrup, installed, preferably without play, straddling an annular portion 17 of the inner ring 2 between the opposed annular surfaces 14 and 16 and the cylindrical surface 10 of the inner ring 2. The radial end portion 15 may have a cylindrical inner edge.
    Each retaining bar 11 is fixed to the inner ring 2 by axial screws 18 which pass through its radial portion 13 and which are screwed into axial holes 19 of the inner ring 2 formed in the radial annular surface 14. The sensor element 6 is mounted locally in a radial hole 20 of the outer ring 3 and has an end 21 opposite the encoder tape 7. When the rings 2 and 3 rotate relative to each other, the end 21 of the sensor element 6 moves circumferentially at a distance from the encoder ribbon 7 and the retaining bars, leaving a space 22.
    According to an alternative embodiment illustrated in FIG. 3, each retaining bar 11 further comprises an end portion 23 which extends the radial portion 15 and which extends on or near the cylindrical bottom 24 of a groove 25 of the ring 2, one of the flanks of this groove being the radial surface 16 and this groove having an opposite radial flank 26.
    Advantageously, the radial portion 15 and the end portion 23, which in section form an L, can be introduced without play or force in the annular groove 25 of the inner ring 2. The end portion 23 has a cylindrical shape conforming to the shape of bottom 24 of the annular groove 25.
    Thanks to the presence of the retaining bars 11, distributed circumferentially, preferably regularly, the coded tape 7 is maintained in addition to the bonding. Thus, the risks of taking off the coded tape 7 are avoided.
    The encoder ribbon 7 includes a magnetized strip encoded alternately in poles (+) and in poles (-). The retaining strips 11 are then made of a nonmagnetic steel so that they allow themselves to pass through the magnetic field of this magnetized strip without disturbance. When the rings 2 and 3 rotate with respect to each other, the variations of the magnetic field are detected by the sensor element 6. The screws 18 can also be made of a non-magnetic steel.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Bearing comprising a first ring (2) and a second ring (3), able to rotate concentrically relative to each other, equipped with at least one onboard device (4) for detecting the displacement of said rings. with respect to one another, this detection device comprising at least one encoder element (5) mounted on the first ring (2), and at least one sensor element (6) mounted on the second ring (3) , facing the encoder element, said encoder element (5) comprising at least one ribbon (7) disposed on a cylindrical surface (8) of said first ring (2); bearing in which the first ring (2) is provided with at least one retaining bar (11), which extends above said ribbon (7).
    [2" id="c-fr-0002]
    2. Bearing according to claim 1, wherein said retaining bar (11) comprises an axial portion (12) extending axially above said ribbon (7) and a radial end portion (13) which is opposite a radial surface (14) of the first ring (2).
    [3" id="c-fr-0003]
    3. Bearing according to claim 2, wherein said end portion (13) is fixed to the first ring (2) by at least one axial screw (18).
    [4" id="c-fr-0004]
    4. Bearing according to one of claims 2 and 3, wherein said retaining bar (11) comprises another radial end portion (15) facing another radial surface (16) of the first ring (2). ), so that the bar is in the form of a stirrup straddling an annular portion (17) of the first ring (2).
    [5" id="c-fr-0005]
    5. Bearing according to claim 4, wherein said other end radial portion (15) is provided with an end portion (23) engaged in an annular groove (25) of the first ring (2).
    [6" id="c-fr-0006]
    6. Bearing according to any one of the preceding claims, wherein said axial portion (12) of said retaining bar (11) is supported on a cylindrical surface (10) of the first ring (2).
    [7" id="c-fr-0007]
    7. Bearing according to any one of the preceding claims, wherein said ribbon (7) is placed inside an annular groove (9) of the first ring (2).
    [8" id="c-fr-0008]
    8. Bearing according to any one of the preceding claims, wherein said retaining bar (11) matches the corresponding shape of the first ring (2).
    [9" id="c-fr-0009]
    9. Bearing according to any one of the preceding claims, wherein said ribbon is magnetized, successively in poles (+) and in poles (-), said retaining strip being made of a non-magnetic material.
    [10" id="c-fr-0010]
    10. Bearing according to any one of the preceding claims, comprising a plurality of retaining bars (11) distributed circumferentially to the first ring (2).
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR2698421A1|1994-05-27|Housing for radial fixing of a bearing.
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    FR2857743A1|2005-01-21|Rotation measurement system for use in bearing, has non rotating unit with passive sensor for detecting angular position of encoder of rotating unit, and connector transmitting signal representing position and power supply
    FR2818708A1|2002-06-28|BL0C SENSOR HOLDER AND ROLLING BEARING WITH INFORMATION SENSOR
    EP0740158A1|1996-10-30|Roll bearing with integrated rotating speed detection device
    JP6030242B2|2016-11-24|Conveyor roller with head member
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    FR2886693A1|2006-12-08|ANTI-ROTATION DEVICE FOR ROLLING BEARING, AND BEARING AND MACHINE THEREFOR
    EP1942316A1|2008-07-09|Device for detecting and storing operating parameters of a vehicle wheel, assembly of spacers used and vehicle wheel hub
    同族专利:
    公开号 | 公开日
    CN107061518A|2017-08-18|
    US10030710B2|2018-07-24|
    FR3041396B1|2018-03-30|
    DE102016217579A1|2017-03-23|
    CN107061518B|2020-03-20|
    US20170082148A1|2017-03-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2006064147A|2004-08-30|2006-03-09|Ntn Corp|Bearing having rotation sensor|
    FR2959569A1|2010-04-30|2011-11-04|Snr Roulements Sa|INSTRUMENT ASSEMBLY FOR AXLE ROCKER AND MOUNTING METHOD|US11204067B2|2019-11-19|2021-12-21|Aktiebolaget Skf|Bearing with distance sensors and tapered grooves|
    US11209049B2|2019-10-24|2021-12-28|Aktiebolaget Skf|Rolling bearing with ultrasonic distance sensor|DE2505802A1|1975-02-12|1976-08-26|Polymotor Italiana Spa|Machine parts rotational speed transmitter - has rotor and stator for inductive or photoelectric interaction|
    FR2626632B1|1988-02-02|1994-03-25|Snr Roulements|BEARING OR BEARING WITH INFORMATION SENSOR|
    US4940936A|1989-02-24|1990-07-10|The Torrington Company|Antifriction bearing with a clip-on sensor cooperating with a shaft mounted magnetic encoder retainer ring|
    FR2750181B1|1996-06-21|1998-07-31|Rks Sa|ORIENTATION BEARING WITH INTEGRATED SENSOR|
    US6535135B1|2000-06-23|2003-03-18|The Timken Company|Bearing with wireless self-powered sensor unit|
    JP4411911B2|2003-09-10|2010-02-10|Ｎｏｋ株式会社|Sealing device|
    DE102004052598A1|2004-10-29|2006-05-04|Aktiebolaget Skf|Wind turbine|
    JP5003862B2|2006-03-31|2012-08-15|Ｎｏｋ株式会社|Sealing device|
    DE102008013377A1|2008-03-10|2009-09-17|Dr. Johannes Heidenhain Gmbh|Angle measuring system and method for producing an angle measuring system|
    JP5349157B2|2009-06-19|2013-11-20|Ｎｔｎ株式会社|Rotation detection device and bearing with rotation detection device|
    DE102011082221A1|2011-09-07|2013-03-07|Schaeffler Technologies AG & Co. KG|roller bearing|
    CN204612728U|2015-04-24|2015-09-02|海茵兰茨（天津）工业技术有限公司|Scrambler bearing adapter|
    DE102015219167A1|2015-10-05|2017-04-06|Schaeffler Technologies AG & Co. KG|roller bearing assembly|US10801550B1|2019-07-29|2020-10-13|Aktiebolaget Skf|Encoder system and method of assembly for large bearings|
    DE102019216610A1|2019-10-29|2021-04-29|Aktiebolaget Skf|Bearings with an optical sensor and associated groove|
    法律状态:
    2016-09-28| PLFP| Fee payment|Year of fee payment: 2 |
    2017-03-24| PLSC| Publication of the preliminary search report|Effective date: 20170324 |
    2017-10-02| PLFP| Fee payment|Year of fee payment: 3 |
    2018-09-28| PLFP| Fee payment|Year of fee payment: 4 |
    2019-09-27| PLFP| Fee payment|Year of fee payment: 5 |
    2020-09-28| PLFP| Fee payment|Year of fee payment: 6 |
    2021-09-27| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1558756A|FR3041396B1|2015-09-17|2015-09-17|BEARING HAVING A RING COMPRISED WITH RESTRAINTS OF A CODE RIBBON|
    FR1558756|2015-09-17|FR1558756A| FR3041396B1|2015-09-17|2015-09-17|BEARING HAVING A RING COMPRISED WITH RESTRAINTS OF A CODE RIBBON|
    CN201610820115.4A| CN107061518B|2015-09-17|2016-09-13|Bearing with a coding strip stop on one ring|
    DE102016217579.3A| DE102016217579A1|2015-09-17|2016-09-15|Bearing, of which a ring is equipped with strips for holding a coded tape|
    US15/266,002| US10030710B2|2015-09-17|2016-09-15|Bearing in which one ring is equipped with strips for retaining a coded ribbon|
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