WO2014108170A1 - Attache pour capteur à fibre optique - Google Patents

Attache pour capteur à fibre optique Download PDF

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Publication number
WO2014108170A1
WO2014108170A1 PCT/EP2013/050209 EP2013050209W WO2014108170A1 WO 2014108170 A1 WO2014108170 A1 WO 2014108170A1 EP 2013050209 W EP2013050209 W EP 2013050209W WO 2014108170 A1 WO2014108170 A1 WO 2014108170A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
clamping ring
ring
cavity
clip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2013/050209
Other languages
English (en)
Inventor
Defeng LANG
Hongyu YANG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Original Assignee
SKF AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SKF AB filed Critical SKF AB
Priority to PCT/EP2013/050209 priority Critical patent/WO2014108170A1/fr
Publication of WO2014108170A1 publication Critical patent/WO2014108170A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/527—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to vibration and noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0009—Force sensors associated with a bearing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/08—Testing mechanical properties
    • G01M11/083—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT]
    • G01M11/086—Details about the embedment of the optical fiber within the DUT
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35306—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement
    • G01D5/35309—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer
    • G01D5/35316—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using an interferometer arrangement using multiple waves interferometer using a Bragg gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
    • G02B6/3636—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the mechanical coupling means being grooves

Definitions

  • the invention relates to a sensor assembly for condition monitoring of bearings and the like.
  • the invention concerns a fibreoptic sensor clip for connection to such a mechanical system.
  • Bearings are a very important component in rotating machinery. If a bearing fails, then the functionality of the machinery can break down. In some applications it can be very difficult or extremely expensive to replace a failed bearing outside regular scheduled maintenance. Such applications include deep sea applications, ships or continuous manufacturing lines. In an attempt to predict when a bearing needs to be replaced before failure, condition monitoring is done. If the machinery and bearings are in a location that is easily accessible, then the condition of a bearing can be assessed by, for example, vibration measurement. For equipment which is not easily accessible, such as deep sea applications, other means are needed to assess the condition of a bearing to be able to determine when maintenance and/or replacement is required.
  • the fibreoptic sensor comprises a glass fibre, which is fixed in or to the periphery of the bearing ring.
  • the sensor is attached in a groove around the bearing ring by means of a cement connection.
  • the sensor can be attached by a glue connection.
  • One disadvantage of such connections is that the fibreoptic sensor does not directly contact the surface of the bearing ring being monitored, which may reduce measurement accuracy.
  • Using a cement connection may require the use of high temperature treatment to establish a firm connection between the bearing ring and the fibre sensor.
  • high temperatures may cause thermal damage to the fibre sensor.
  • optical fibres used in such sensors are extremely fine and great care is required in handling them.
  • a fibreoptic sensor clip comprising a clamping ring for clamping engagement of a shaft or bearing, having a sensing region at an inner surface for engagement with an outer surface of the shaft or bearing and a cavity extending around a circumference of the clamping ring adjacent to the sensing region and an optical fibre retained within the cavity and extending from the cavity for connection to an interrogation unit.
  • the clip may thus be a pre-fabricated element having the fibre embedded within during a fabrication procedure. Thereafter, the clip may be applied to a mechanical system of choice without risk of damage to the optical fibre.
  • the fibre is reinforced or supported at the location where it exits from the clamping ring.
  • clamping occurs with direct contact to the outer surface, i.e.
  • the sensing region comprises a thin membrane separating the cavity from the inner surface and the fibre is biased against the membrane.
  • the cavity may be sized in order to cause such a bias.
  • the cavity may be a hollow cavity within the clamping ring having a dimension greater than the fibre.
  • the fibre may be simple embedded in the clamping ring.
  • the membrane may have a thickness of less than 1 mm, preferably less than 0.5 mm or more preferably less than 0.3 mm.
  • the sensing region By making the sensing region very thin, the sensitivity of the sensor is optimised and the effect of the membrane may be minimised.
  • the clamping ring comprises an inner ring and an outer ring and the cavity is formed between the inner ring and the outer ring.
  • the inner and outer ring may be separate items of manufacture, joined together after inserting the fibre into the cavity.
  • the method of joining may be any appropriate means and may be permanent or non- permanent.
  • both inner and outer rings are formed of metal and welded together. Nevertheless, other material and constructions such as screw engagement may be considered.
  • the clamping ring is made of metal, at least at its inner surface.
  • the sensing region in particular should preferably be made of metal as this is believed to maximise the sensitivity of the sensor to strain in the outer surface of the system being measured.
  • the clamping ring may be engaged against the outer surface of the bearing or shaft in various ways. In one embodiment, it may be clamped by an external bearing housing or the like. Preferably, the clamping ring itself comprises a tightening arrangement, for tightening it around the shaft or bearing. Various tightening arrangements will be familiar to the skilled person, including spring clips, screw clips, hose clips, circlips, cable ties or the like. In general the tightening arrangement will be made of metal. Nevertheless, it is not excluded that other materials may be used both for the clamping ring and for the tightening arrangement. In a most preferred embodiment, the clamping ring is a split ring, meaning that it does not extend a full 360 degrees but has a small gap or opening for tightening purposes.
  • the clamping ring may comprise an engagement arrangement for engaging with a channel provided in the outer surface of the shaft or bearing.
  • the engagement arrangement may itself ensure the requisite clamping force or may act together with a tightening arrangement.
  • the clamping ring may have a form-fit engagement with the shaft or bearing to which it is applied, e.g. by an interference fit within such a channel.
  • the fibre may be any suitable optical fibre capable of measuring the state of the mechanical system to which it is applied. The skilled person will be familiar with various forms of sensor, working on the basis of strain, stress, elongation, temperature and the like.
  • the fibre is a fibre Bragg grating (FBG) sensor, operating in combination with a suitable interrogation unit. A light signal generated by a light source is input to the optical fibre and a returning light signal is detected by a detector after passing through the optical fibre.
  • FBG fibre Bragg grating
  • the optical fibre When the optical fibre is longitudinally deformed, this can be determined by a change of at least one parameter of the detected light signal passed through the optical fibre. A deformation of the outer surface against which the sensing region engages can then also be deduced. Spatial resolution in the longitudinal direction of the sensor is achieved by a corresponding variation of the grating period, resulting in different Bragg wavelengths due to the variation of the grating period over the length of the sensor. The actual operation of such sensors is well known to the skilled person and will not be further discussed here.
  • the cavity may extend around the clamping ring over a length sufficient to provide the desired sensing function.
  • the cavity may extend once around the full circumference or may extend only over part of the circumference.
  • the cavity may also make more than a single turn and may be serpentine or doubled-back on itself.
  • the optical fibre extends around at least three-quarters of the circumference of the clamping ring.
  • the present invention also relates to a bearing having an outer surface and comprising a clip as described above, engaged around the outer surface such that the sensing region is held in intimate contact therewith.
  • the outer surface is preferably a radially outer surface of an outer bearing ring of the bearing. Nevertheless, it is not excluded that the clip may be engaged with another outer surface of the bearing, including regions of an inner bearing ring. Preferably, the sensing region will be engaged at a position where strain in the bearing can best be measured.
  • the bearing comprises a channel formed in the outer surface and the clamping ring is engaged within the channel.
  • the sensing region may be located closer to a region of strain and greater sensitivity may be achieved.
  • the presence of a channel may assist in retaining the clamping ring in position.
  • the channel may have engaging surfaces on its side walls for engaging and retaining the clamping ring within the channel as described above.
  • the channel and clamping ring may be a form fit.
  • other permanent connection may be provided between the clamping ring and the bearing, including welding or adhesives.
  • the channel is at least as deep or deeper than the clamping ring, such that the clamping ring is contained entirely within the channel.
  • the bearing may include any suitable rolling elements, including ball bearings, roller bearings, needle bearings and the like.
  • the invention may be applicable to bearings having an inner and an outer bearing ring, with roller elements located between the inner and outer bearing rings, which may be provided with suitable raceways.
  • the sensing region is preferably attached directly opposite the raceway along which the rolling bodies move.
  • the clip will generally be provided on the stationary bearing ring. However, it is also possible to engage the fibre against the rotating bearing ring for rotation therewith. It will be understood that the invention may also be applicable to journal bearings and other devices in which rolling or even sliding contact with a bearing ring occurs.
  • the invention also provides for a clip or bearing as described above in combination with an interrogation unit for applying a light signal to the fibre and analysing the response.
  • the interrogation unit may also be an on chip logging device provided on the clip.
  • the invention also encompasses a method for connecting a fibre sensor to a shaft or bearing having an outer surface, the method comprising: providing a clamping ring comprising an inner surface having a sensing region for engagement with the outer surface of the shaft or bearing and a cavity extending around a circumference of the clamping ring adjacent to the sensing region; locating an optical fibre within the cavity having a portion extending from the cavity for connection to an interrogation unit; and engaging the clamping ring with the shaft or bearing, such that the sensing region intimately engages the outer surface thereof with a clamping force.
  • a method can be easily implemented either during production or installation and can be performed without adhesive or the like.
  • the clip may also be easily removed or exchanged.
  • Figure 1 shows a perspective view of a clip according to the present invention
  • Figure 2 shows an axial cross-section through a bearing and clip according to the invention
  • Figure 3 shows a radial cross-section through the bearing and clip of Figure 2 along line III-III;
  • Figure 4 shows an axial cross-section through a clip according to the invention applied to a shaft
  • Figure 5 shows a bearing with a clip according to an alternative embodiment of the invention.
  • Figure 6 shows a number of different clips according to the invention in perspective view.
  • Figure 1 shows a perspective view of a clip 1 according to the present invention.
  • the clip comprises a clamping ring 11 having a cavity 7 within its interior extending circumferentially.
  • the ring 11 is not a full annulus, being split at a gap 13.
  • an optical fibre 9 Within the cavity 7 is located an optical fibre 9. It is noted that the figure is schematic and not to scale. In actual fact, the optical fibre may have a diameter of around 0.1 mm while the diameter of the clamping ring 11 may be a number of centimetres.
  • the clamping ring 11 is constructed in two parts, an inner ring 24 and an outer ring 26, with the cavity 7 being formed between them. Both parts are formed of steel, welded together after introduction of the fibre 7.
  • the inner ring has an inner surface 20 provided with a sensing region 28 underlying the cavity.
  • the material of the inner ring 24 in the sensing region 28 is very thin, forming a membrane 30.
  • the size of the cavity 7 and the fibre 9 are such that in the assembled condition shown in Figure 1 , the fibre is biased against the membrane 30.
  • FIG. 2 shows an axial cross-section through a bearing 100 according to an aspect of the invention, on which the clip 1 of Figure 1 has been applied.
  • the bearing 100 comprises an inner bearing ring 2 having an inner raceway 5, and an outer bearing ring 3 having an outer raceway 6.
  • rolling elements 4 are provided such that the inner and outer bearing rings 2, 3 can rotate with respect to each other.
  • the rolling elements 4 are located in between the inner and outer raceways 5, 6.
  • a channel 12 is provided at an outer surface 8 of the outer bearing ring 3, shaped as a recess between two sidewalls 10. Within the channel 12 is located the clamping ring 11 with the sensing region 28 at its inner surface 20 engaged with the outer surface 8.
  • Figure 3 shows a radial cross-section through the bearing 100 and clamping ring 11 along line III-III of Figure 2.
  • the clamping ring 11 extends around a large part of the circumference of the outer bearing ring 3, except for a relatively small portion forming gap 13, which is used for placing the clamping ring 11 over outer bearing ring 3 and into the channel 12.
  • the cavity 7 extends around the complete extent of the clamping ring 11 although the fibre 9 stops short of the opening 13 at a first end 14 and extends outwards through the clamping ring at a second end 15 for attachment to a suitable interrogation device 40.
  • the fibre 9 comprises Bragg gratings 19 distributed along its length. These are a type of distributed Bragg reflectors constructed in a short segment of the optical fibre that reflects particular wavelengths of light and transmits all others. Such gratings may be achieved by creating a periodic variation in the refractive index of the fibre core, which generates a wavelength specific dielectric mirror. The fibre Bragg grating thus operates as an inline wavelength-specific reflector. Elongation of the fibre 9 due to strain in the outer bearing ring 3 may thus be detected by the interrogator 40. Operation of such a sensor is generally conventional and will not be discussed further in the present application. It will also be understood that other types of sensor may also be located within the cavity 7.
  • Figure 4 shows an axial cross-section through a clip 1 applied to a shaft 42.
  • the clip 1 is held within a portion of a journal 44 with the sensing region 28 engaged against the shaft 42.
  • FIG. 5 shows a bearing 200 with an alternative clip 201 according to an alternative embodiment of the invention.
  • clamping ring 211 is distinguished from that of the first embodiment by a pair of engagement ribs 226 extending laterally.
  • the channel 212 provided in the outer bearing ring 203 has sidewalls 210 provided with corresponding detent elements 227 for receipt of the engagement ribs 226.
  • the ribs 226 and elements 227 are located at a position to ensure the correct degree of clamping of the sensing region 228 against the outer surface 208. It will be understood that other shapes of engagement elements and ribs may be provided to achieve the same effect.
  • Figure 6 shows a number of different clamping rings in perspective view.
  • Clamping ring 211 is as shown in Figure 5.
  • Clamping ring 311 is of a screw clamp type, having a pair of flanges 314, that can be drawn to each other by a screw 315.
  • Clamping ring 411 is of a hose clamp type, having a captive screw 415 that engages with thread sections 414 formed along the ring 411. The skilled person will recognise that many other alternative forms of clamping ring may be implemented.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Optical Transform (AREA)

Abstract

La présente invention concerne une attache pour capteur à fibre optique, comprenant une bague de fixation permettant un enclenchement sur un arbre ou un palier. L'attache comporte une région de détection sur une surface interne entrant en contact avec une surface externe de l'arbre ou du palier et une cavité se prolongeant autour d'une circonférence de la bague de fixation. La cavité est adjacente à la région de détection et une fibre optique est retenue au sein de la cavité et se prolonge à partir de la cavité pour permettre une connexion à une unité d'interrogation. L'attache peut être un élément préfabriqué dans lequel la fibre est incrustée lors d'une procédure de fabrication.
PCT/EP2013/050209 2013-01-08 2013-01-08 Attache pour capteur à fibre optique Ceased WO2014108170A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/050209 WO2014108170A1 (fr) 2013-01-08 2013-01-08 Attache pour capteur à fibre optique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/050209 WO2014108170A1 (fr) 2013-01-08 2013-01-08 Attache pour capteur à fibre optique

Publications (1)

Publication Number Publication Date
WO2014108170A1 true WO2014108170A1 (fr) 2014-07-17

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Family Applications (1)

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PCT/EP2013/050209 Ceased WO2014108170A1 (fr) 2013-01-08 2013-01-08 Attache pour capteur à fibre optique

Country Status (1)

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WO (1) WO2014108170A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016096031A1 (fr) * 2014-12-19 2016-06-23 Aktiebolaget Skf Bague de roulement à capteur
CN106774482A (zh) * 2016-11-17 2017-05-31 陈翔斌 一种转轴转动状态检测与控制装置
CN109029280A (zh) * 2018-07-27 2018-12-18 中国航空工业集团公司沈阳飞机设计研究所 一种垫圈结构
US20220010840A1 (en) * 2020-07-07 2022-01-13 Aktiebolaget Skf Bearing ring with integrated fiber sensor and associated bearing
DE102021110312A1 (de) 2021-04-22 2022-10-27 Schaeffler Technologies AG & Co. KG Steer-by-wire Lenksystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009100084A1 (fr) * 2008-02-08 2009-08-13 Schlumberger Canada Limited Procédés et appareil pour détecter une déformation dans des structures
US20100158434A1 (en) 2008-12-11 2010-06-24 Prueftechnik Dieter Busch Ag Method and device for dynamic measurement of the radial deformation of a rolling bearing ring
WO2011066926A1 (fr) * 2009-12-04 2011-06-09 Aktiebolaget Skf Surveillance de palier au moyen d'un reseau de bragg a fibres
DE102011077495A1 (de) * 2011-06-14 2012-12-20 Schaeffler Technologies AG & Co. KG Messvorrichtung zur Erfassung von Kräften in einem Lager

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009100084A1 (fr) * 2008-02-08 2009-08-13 Schlumberger Canada Limited Procédés et appareil pour détecter une déformation dans des structures
US20100158434A1 (en) 2008-12-11 2010-06-24 Prueftechnik Dieter Busch Ag Method and device for dynamic measurement of the radial deformation of a rolling bearing ring
WO2011066926A1 (fr) * 2009-12-04 2011-06-09 Aktiebolaget Skf Surveillance de palier au moyen d'un reseau de bragg a fibres
DE102011077495A1 (de) * 2011-06-14 2012-12-20 Schaeffler Technologies AG & Co. KG Messvorrichtung zur Erfassung von Kräften in einem Lager

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016096031A1 (fr) * 2014-12-19 2016-06-23 Aktiebolaget Skf Bague de roulement à capteur
GB2548505A (en) * 2014-12-19 2017-09-20 Skf Ab Bearing ring with sensor
US10428871B2 (en) 2014-12-19 2019-10-01 Aktiebolaget Skf Bearing ring
GB2548505B (en) * 2014-12-19 2020-09-23 Skf Ab Bearing ring
CN106774482A (zh) * 2016-11-17 2017-05-31 陈翔斌 一种转轴转动状态检测与控制装置
CN106774482B (zh) * 2016-11-17 2020-06-19 深圳市旗客智能技术有限公司 一种转轴转动状态检测与控制装置
CN109029280A (zh) * 2018-07-27 2018-12-18 中国航空工业集团公司沈阳飞机设计研究所 一种垫圈结构
US20220010840A1 (en) * 2020-07-07 2022-01-13 Aktiebolaget Skf Bearing ring with integrated fiber sensor and associated bearing
US11585384B2 (en) * 2020-07-07 2023-02-21 Aktiebolaget Skf Bearing ring with integrated fiber sensor and associated bearing
DE102021110312A1 (de) 2021-04-22 2022-10-27 Schaeffler Technologies AG & Co. KG Steer-by-wire Lenksystem

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