EP2861952A1 - Machine arrangement - Google Patents

Machine arrangement

Info

Publication number
EP2861952A1
EP2861952A1 EP13728387.5A EP13728387A EP2861952A1 EP 2861952 A1 EP2861952 A1 EP 2861952A1 EP 13728387 A EP13728387 A EP 13728387A EP 2861952 A1 EP2861952 A1 EP 2861952A1
Authority
EP
European Patent Office
Prior art keywords
machine arrangement
glass fiber
metallic material
arrangement according
nickel
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.)
Withdrawn
Application number
EP13728387.5A
Other languages
German (de)
French (fr)
Inventor
Hendrik Anne Mol
VAN DE John SANDEN
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 EP13728387.5A priority Critical patent/EP2861952A1/en
Priority claimed from PCT/EP2013/062137 external-priority patent/WO2013186256A1/en
Publication of EP2861952A1 publication Critical patent/EP2861952A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/04—Joining glass to metal by means of an interlayer
    • C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
    • C03C27/046—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of metals, metal oxides or metal salts only
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings

Definitions

  • the invention relates to a machine arrangement, comprising or being at least one bearing ring, wherein a glass fiber is connected with the machine arrangement.
  • FBG fiber Bragg grating
  • a typical construction employs a cladding arranged around the glass fiber (core) itself; the cladding is coated by a coating layer. Then, strengthening fibers (made e. g. from aramid) are arranged at the outer circumference of the coating. Finally the strengthening fibers are cased by a hollow cylindrical cable jacket.
  • a s o l u t i o n according to the invention is characterized in that the connection between the glass fiber and the machine arrangement is established by a metallic material which metal material is connected by material bonding with the machine arrangement as well as with the glass fiber.
  • the glass fiber is basically free from any layer as described above. An exception can be that the glass fiber is encased by a reflective cover material to ensure the conduction of light through the glass fiber.
  • the metallic material preferably consists of at least two different metallic materials, wherein a first metallic material encases the glass fiber and wherein a second metallic material connects the first metallic material with the machine arrangement by material bonding.
  • the material bonded connection between the metallic material and the machine arrangement can be established by a welding process using the metallic material.
  • the material bonded connection between the metallic material and the glass fiber can also be established by a welding or melting process using the metallic material.
  • the mentioned first metallic material can be a single metal element.
  • the first metallic material is chromium (Cr).
  • An alternative suggests nickel (Ni) as the first metallic material.
  • the second metallic material can be a metal alloy.
  • the second metallic material can be an alloy of chromium (Cr) and nickel (Ni).
  • a cladding of nickel (Ni) which encases the glass fiber is provided; this cladded glass fiber it then coated with a nickel-chromium-alloy.
  • the second metallic material can have at least partially a thickness measured in the direction perpendicular to the longitudinal axis of the glass fiber of at least 0.3 mm, preferably of at least 0.5 mm.
  • the glass fiber can be arranged on a curved surface of the machine arrangement, especially on a cylindrical surface of a bearing ring. Thereby, the glass fiber can be attached to a cylindrical surface of the machine arrangement. Also, it is possible to locate the glass fiber in a groove which is machined for the glass fiber into the machine arrangement.
  • Fig. 1 shows in a perspective view a section of an outer bearing ring of a roller bearing, on which a glass fiber is fixed
  • Fig. 2 shows the cross section A-A according to Fig. 1 ,
  • Fig. 3 shows a perspective view of a glass fiber which is fixed at a bearing ring similar to Fig. 2,
  • Fig. 4 shows a front view of a glass fiber which is fixed at a bearing ring, similar to Fig. 3,
  • Fig. 5 shows a perspective view of a glass fiber which is fixed in a groove of a bearing ring
  • Fig. 6 shows a front view of a glass fiber which is fixed in a groove of a bearing ring, similar to Fig. 5,
  • Fig. 7a shows the process of fixing a glass fiber in a groove of a bearing ring in a first, early state
  • Fig. 7b shows the process of fixing a glass fiber in a groove of a bearing ring in a second, later state.
  • a machine arrangement 1 being an outer bearing ring of a roller bearing is shown.
  • the bearing ring 1 has an outer spherical surface which is to be monitored with respect to strains which act in the machine part.
  • the survey of those strains is carried out by the fiber Bragg grating (FBG) method which is known as such.
  • FBG fiber Bragg grating
  • a glass fiber 2 is securely fixed on the spherical, i. e. cylindrical outer circumference of the bearing ring 1.
  • the glass fiber 2 has a longitudinal direction L which extends in the circumferential direction of the bearing ring 1.
  • the glass fiber 2 is basically the pure glass element - possibly covered only by a reflective coating to ensure proper light conduction within the glass fiber - which is then connected with the bearing ring 2 by means of metallic material 3.
  • a first metallic material 3 ' coats the glass fiber 2 itself.
  • the preferred material is chromium (Cr).
  • the first metallic material 3 ' it then connected with a second metallic material 3".
  • This material is preferably an alloy, preferably from chromium (Cr) and nickel (Ni).
  • a further embodiment of the invention is shown.
  • the glass fiber 2 is provided with a cladding 3' from a first metallic material being nickel (Ni).
  • This cladding is embedded in a second metallic material 3" being a nickel-chromium-alloy.
  • the second metallic material 3" is fixed on the bearing ring 1 by means of welding or brazing 4.
  • Fig. 4 a similar solution is shown.
  • the glass fiber 2 is again embedded in a cladding of nickel 3'.
  • This cladding is covered by a coating 3" of a nickel-chromium-alloy.
  • This coating 3" is fixed with the bearing ring 1 by means of welding or brazing 4.
  • Fig. 5 an alternative is shown.
  • the bearing ring 1 has a groove 5, in which the glass fiber 1 is inserted and securely fixed.
  • the glass fiber 1 is cladded with a cover 3 ' from nickel.
  • the covered glass fiber 2 is fixed on the bearing ring 1 by a nickel-chromium-alloy 3 ' 'which fills up the groove 5.
  • the bearing ring 1 again has a groove 5 in which the glass fiber 2 is inserted.
  • the glass fiber 2 is embedded in a nickel cladding 3'.
  • the cladding 3' is embedded by a nickel-chromium- alloy 3".
  • the fixation of the coating of nickel-chromium-alloy 3" is fixed in the groove 5 by means of welding or brazing 4.
  • a process is depicted by which a fixation as shown in Fig. 6 can be realized.
  • a container 7 is arranged at the bearing ring 1 when the embedded glass fiber 2 (coated again by a nickel layer 3 ' and a layer form a nickel-chromium- alloy 3") is arranged in a groove 5 in the bearing ring 1.
  • the container 7 is filled with braze paste 6. This is shown in Fig. 7a.
  • Heating elements 8 being inductive heaters are arranged near the container 7. Due to the heat produced by the inductive heaters 8 the braze paste 6 melts and forms the brazing 4 which is shown in Fig. 7b. Afterwards, the container 7 is removed.
  • connection technology can be used to fix a glass fiber 2 firmly between two points on the bearing ring 1 to use the fiber Bragg grating (FBG) method for measurement of specific data.
  • FBG fiber Bragg grating
  • Ni nickel
  • Cr chromium
  • a selection can be made from suitable alloys between nickel (Ni) and chromium (Cr) with or without additional elements such as B, Fe, Mn, Si, Ti, which can be selected to obtain a harder or more ductile coating and/or to reduce the melting temperature for the coating or later brazing or welding to be applied.
  • Nickel can be used which is alloyed with a maximum of 2 weight-% titan (Ti), 1 weight-% silizium (Si) or a nickel-alloy with a maximum of 3.5 weight-% boron (B), 4.5 weight-% silizium (Si), between 5 and 7 weight-% chromium (Cr) and about 4 weight-% ferrum (Fe).
  • Ti 2 weight-% titan
  • Si 1 weight-% silizium
  • B nickel-alloy with a maximum of 3.5 weight-% boron
  • Si 4.5 weight-% silizium
  • Cr chromium
  • Fe ferrum
  • outer coating 3 pure chromium (Cr) can be employed but also chromium alloyed with a maximum of 20 to 60 weight-% nickel (Ni).
  • the outer coating has preferably between 0.2 to 0.5 mm wall thickness in order to enable microlaser welding or brazing,
  • a nickel-chromium-alloy is preferred with 20 to 80 weight-% nickel (Ni) and a balance of chromium (Cr). Also, an alloy has been found suitable with 20 to 70 weight-% nickel (Ni), 1 to 5 weight-% mangan (Mn), a maximum of 1 weight-% silizium (Si) and a balance of chromium (Cr). Also the addition of copper (Cu) can be beneficial.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

The invention relates to a machine arrangement (1), comprising or being at least one bearing ring, wherein a glass fiber (2) is connected with the machine arrangement (1). To allow a proper measurement of stresses even at curved surfaces of the machine arrangement as it is typical in the case of bearing rings the invention proposes that the connection between the glass fiber (2) and the machine arrangement (1) is established by a metallic material (3) which metal material (3) is connected by material bonding with the machine arrangement (1) as well as with the glass fiber (2).

Description

Machine Arrangement
Technical Field
The invention relates to a machine arrangement, comprising or being at least one bearing ring, wherein a glass fiber is connected with the machine arrangement.
Background
It is known in the art to equip a machine part of this kind with a glass fiber element to allow the measurement of different physical parameters. By doing so, a survey of the parameters becomes possible by using the fiber Bragg grating (FBG) method. By this method temperatures as well as strains of the machine arrangement can be monitored.
For doing so it is necessary to connect a glass fiber with the component. For surveying temperatures it is essential that a thermal coupling between the glass fiber and the machine arrangement is established. For monitoring strains it is necessary to mechanically connect the glass fiber with the component to be monitored. Specifically in the latter case problems arise because the glass fiber is normally equipped with a plurality of coaxially arranged cover layers. A typical construction employs a cladding arranged around the glass fiber (core) itself; the cladding is coated by a coating layer. Then, strengthening fibers (made e. g. from aramid) are arranged at the outer circumference of the coating. Finally the strengthening fibers are cased by a hollow cylindrical cable jacket.
When a glass fiber element of this type is connected with the component a certain elasticity is inherent between the glass core and the component. Thus, specifically the measurement of strains is problematic due to the elasticity. This is specifically a problem when the component is not even or flat but if it has a spherical shape. This is typical in the case of a part of a bearing, specifically of a roller bearing.
It is an o bj e c t of the present invention to propose a machine arrangement of the above mentioned kind which is designed in such a manner that a contact is established between the glass fiber core and the component which is as stiff as possible. By doing so it is aimed to monitor physical properties, especially of strains in the component, with a high degree of precision. Thus, specifically a proper measurement of stresses should become possible even at curved surfaces of the machine arrangement as is typical in the case of bearing rings.
Summary of the invention A s o l u t i o n according to the invention is characterized in that the connection between the glass fiber and the machine arrangement is established by a metallic material which metal material is connected by material bonding with the machine arrangement as well as with the glass fiber.
The glass fiber is basically free from any layer as described above. An exception can be that the glass fiber is encased by a reflective cover material to ensure the conduction of light through the glass fiber.
The metallic material preferably consists of at least two different metallic materials, wherein a first metallic material encases the glass fiber and wherein a second metallic material connects the first metallic material with the machine arrangement by material bonding.
The material bonded connection between the metallic material and the machine arrangement can be established by a welding process using the metallic material. The material bonded connection between the metallic material and the glass fiber can also be established by a welding or melting process using the metallic material.
The mentioned first metallic material can be a single metal element. In this case a preferred embodiment proposes that the first metallic material is chromium (Cr). An alternative suggests nickel (Ni) as the first metallic material. The second metallic material can be a metal alloy. In this case the second metallic material can be an alloy of chromium (Cr) and nickel (Ni).
In a preferred embodiment of the invention, a cladding of nickel (Ni) which encases the glass fiber is provided; this cladded glass fiber it then coated with a nickel-chromium-alloy.
The second metallic material can have at least partially a thickness measured in the direction perpendicular to the longitudinal axis of the glass fiber of at least 0.3 mm, preferably of at least 0.5 mm.
The glass fiber can be arranged on a curved surface of the machine arrangement, especially on a cylindrical surface of a bearing ring. Thereby, the glass fiber can be attached to a cylindrical surface of the machine arrangement. Also, it is possible to locate the glass fiber in a groove which is machined for the glass fiber into the machine arrangement.
By the proposed design a stiff and direct connection is established between the glass fiber and the component to be monitored so that physical parameters - especially temperatures and strains - can be detected in a precise way.
Brief description of the drawings
The drawings show embodiments of the invention. Fig. 1 shows in a perspective view a section of an outer bearing ring of a roller bearing, on which a glass fiber is fixed,
Fig. 2 shows the cross section A-A according to Fig. 1 ,
Fig. 3 shows a perspective view of a glass fiber which is fixed at a bearing ring similar to Fig. 2,
Fig. 4 shows a front view of a glass fiber which is fixed at a bearing ring, similar to Fig. 3,
Fig. 5 shows a perspective view of a glass fiber which is fixed in a groove of a bearing ring,
Fig. 6 shows a front view of a glass fiber which is fixed in a groove of a bearing ring, similar to Fig. 5,
Fig. 7a shows the process of fixing a glass fiber in a groove of a bearing ring in a first, early state,
Fig. 7b shows the process of fixing a glass fiber in a groove of a bearing ring in a second, later state.
Detailed description of the invention
In Fig. 1 a machine arrangement 1 being an outer bearing ring of a roller bearing is shown. The bearing ring 1 has an outer spherical surface which is to be monitored with respect to strains which act in the machine part. The survey of those strains is carried out by the fiber Bragg grating (FBG) method which is known as such. Reference is made e. g. to US 6,923,048 B2 where this technology is explained in more detail.
For doing so a glass fiber 2 is securely fixed on the spherical, i. e. cylindrical outer circumference of the bearing ring 1. The glass fiber 2 has a longitudinal direction L which extends in the circumferential direction of the bearing ring 1.
Details concerning the fixation of the glass fiber 2 at the bearing ring 1 can be seen from Fig. 2.
Here, it can be seen that the glass fiber 2 is basically the pure glass element - possibly covered only by a reflective coating to ensure proper light conduction within the glass fiber - which is then connected with the bearing ring 2 by means of metallic material 3.
Here, two different metallic materials are employed:
A first metallic material 3 ' coats the glass fiber 2 itself. The preferred material is chromium (Cr).
The first metallic material 3 ' it then connected with a second metallic material 3". This material is preferably an alloy, preferably from chromium (Cr) and nickel (Ni).
Thus, a material bonding is established between the glass fiber 2 and the machine part 1 to be monitored. This means, all strains in the machine part 1 are directly transferred into the glass fiber 2. Thus, the precondition is assured for a precise measurement of physical parameters of the machine part 1.
In Fig. 3 a further embodiment of the invention is shown. Here, the glass fiber 2 is provided with a cladding 3' from a first metallic material being nickel (Ni). This cladding is embedded in a second metallic material 3" being a nickel-chromium-alloy. The second metallic material 3" is fixed on the bearing ring 1 by means of welding or brazing 4. In Fig. 4 a similar solution is shown. Here, the glass fiber 2 is again embedded in a cladding of nickel 3'. This cladding is covered by a coating 3" of a nickel-chromium-alloy. This coating 3" is fixed with the bearing ring 1 by means of welding or brazing 4. In Fig. 5 an alternative is shown. Here the bearing ring 1 has a groove 5, in which the glass fiber 1 is inserted and securely fixed. For doing so, the glass fiber 1 is cladded with a cover 3 ' from nickel. Then, the covered glass fiber 2 is fixed on the bearing ring 1 by a nickel-chromium-alloy 3 ' 'which fills up the groove 5.
A similar solution is shown in Fig. 6. Here, the bearing ring 1 again has a groove 5 in which the glass fiber 2 is inserted. The glass fiber 2 is embedded in a nickel cladding 3'. The cladding 3' is embedded by a nickel-chromium- alloy 3". The fixation of the coating of nickel-chromium-alloy 3" is fixed in the groove 5 by means of welding or brazing 4.
In Fig. 7a and Fig. 7b a process is depicted by which a fixation as shown in Fig. 6 can be realized. Here, a container 7 is arranged at the bearing ring 1 when the embedded glass fiber 2 (coated again by a nickel layer 3 ' and a layer form a nickel-chromium- alloy 3") is arranged in a groove 5 in the bearing ring 1. The container 7 is filled with braze paste 6. This is shown in Fig. 7a.
Heating elements 8 being inductive heaters are arranged near the container 7. Due to the heat produced by the inductive heaters 8 the braze paste 6 melts and forms the brazing 4 which is shown in Fig. 7b. Afterwards, the container 7 is removed.
The proposed connection technology can be used to fix a glass fiber 2 firmly between two points on the bearing ring 1 to use the fiber Bragg grating (FBG) method for measurement of specific data.
For the cladding of the glass fiber 2 itself, pure material - specifically nickel (Ni) or chromium (Cr) - is preferred. This gives a very dense and defect free coating.
For the outer coating a selection can be made from suitable alloys between nickel (Ni) and chromium (Cr) with or without additional elements such as B, Fe, Mn, Si, Ti, which can be selected to obtain a harder or more ductile coating and/or to reduce the melting temperature for the coating or later brazing or welding to be applied.
Beside pure nickel also nickel can be used which is alloyed with a maximum of 2 weight-% titan (Ti), 1 weight-% silizium (Si) or a nickel-alloy with a maximum of 3.5 weight-% boron (B), 4.5 weight-% silizium (Si), between 5 and 7 weight-% chromium (Cr) and about 4 weight-% ferrum (Fe).
For the outer coating 3" pure chromium (Cr) can be employed but also chromium alloyed with a maximum of 20 to 60 weight-% nickel (Ni). The outer coating has preferably between 0.2 to 0.5 mm wall thickness in order to enable microlaser welding or brazing,
Here, a nickel-chromium-alloy is preferred with 20 to 80 weight-% nickel (Ni) and a balance of chromium (Cr). Also, an alloy has been found suitable with 20 to 70 weight-% nickel (Ni), 1 to 5 weight-% mangan (Mn), a maximum of 1 weight-% silizium (Si) and a balance of chromium (Cr). Also the addition of copper (Cu) can be beneficial.
Reference Numerals:
1 Machine arrangement (bearing ring)
2 Glass fiber
3 Metallic material
3' First metallic material
3" Second metallic material
4 Welding / Brazing
5 Groove
6 Braze paste
7 Container
8 Heating element (induction heating element)
L Longitudinal axis

Claims

Patent Claims:
1. Machine arrangement (1), comprising or being at least one bearing ring, wherein a glass fiber (2) is connected with the machine arrangement (1), characterized in that the connection between the glass fiber (2) and the machine arrangement (1) is established by a metallic material (3) which metal material (3) is connected by material bonding with the machine arrangement (1) as well as with the glass fiber (2).
2. Machine arrangement according to claim 1 , characterized in that the glass fiber (2) is encased by a reflective cover material.
3. Machine arrangement according to claim 1 or 2, characterized in that the metallic material (3) consists of at least two different metallic materials (3', 3"), wherein a first metallic material (3') encases the glass fiber (2) and wherein a second metallic material (3") connects the first metallic material (3') with the machine arrangement (1) by material bonding.
4. Machine arrangement according to one of claims 1 to 3, characterized in that the material bonded connection between the metallic material (3) and the machine arrangement (1) is established by a welding process using the metallic material (3).
5. Machine arrangement according to one of claims 1 to 3, characterized in that the material bonded connection between the metallic material (3) and the glass fiber (2) is established by a welding or melting process using the metallic material (3).
6. Machine arrangement according to one of claims 3 to 5, characterized in that the first metallic material (3') is a single metal element.
7. Machine arrangement according to claim 6, characterized in that the first metallic material (3 ') is chromium (Cr).
8. Machine arrangement according to claim 6, characterized in that the first metallic material (3 ') is nickel (Ni).
9. Machine arrangement according to one of claims 3 to 8, characterized in that the second metallic material (3") is a metal alloy. Machine arrangement according to claim 9, characterized in that the second metallic material (3") is an alloy of chromium (Cr) and nickel (Ni).
Machine arrangement according to one of claims 3 to 10, characterized in that the second metallic material (3") has at least partially a thickness measured in the direction perpendicular to the longitudinal axis (L) of the glass fiber (2) of at least 0.3 mm, preferably of at least 0.5 mm.
Machine arrangement according to one of claims 1 to 11 , characterized in that the glass fiber (2) is arranged on a curved surface of the machine arrangement (1), especially on a cylindrical surface of a bearing ring.
EP13728387.5A 2012-06-14 2013-06-12 Machine arrangement Withdrawn EP2861952A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13728387.5A EP2861952A1 (en) 2012-06-14 2013-06-12 Machine arrangement

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP2012061347 2012-06-14
PCT/EP2013/062137 WO2013186256A1 (en) 2012-06-14 2013-06-12 Machine arrangement
EP13728387.5A EP2861952A1 (en) 2012-06-14 2013-06-12 Machine arrangement

Publications (1)

Publication Number Publication Date
EP2861952A1 true EP2861952A1 (en) 2015-04-22

Family

ID=52672130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13728387.5A Withdrawn EP2861952A1 (en) 2012-06-14 2013-06-12 Machine arrangement

Country Status (1)

Country Link
EP (1) EP2861952A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853071A (en) * 2019-04-11 2020-10-30 斯凯孚公司 Roller bearing, wind turbine and control method of wind turbine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2013186256A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111853071A (en) * 2019-04-11 2020-10-30 斯凯孚公司 Roller bearing, wind turbine and control method of wind turbine

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