WO2022237921A1 - Segmented bearing cage - Google Patents

Segmented bearing cage Download PDF

Info

Publication number
WO2022237921A1
WO2022237921A1 PCT/CZ2021/000019 CZ2021000019W WO2022237921A1 WO 2022237921 A1 WO2022237921 A1 WO 2022237921A1 CZ 2021000019 W CZ2021000019 W CZ 2021000019W WO 2022237921 A1 WO2022237921 A1 WO 2022237921A1
Authority
WO
WIPO (PCT)
Prior art keywords
holes
bridge
bridges
segments
spacing
Prior art date
Application number
PCT/CZ2021/000019
Other languages
French (fr)
Inventor
Libor Procházka
David MACHÁČEK
Original Assignee
ZKL - Výzkum a vývoj, a.s.
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 ZKL - Výzkum a vývoj, a.s. filed Critical ZKL - Výzkum a vývoj, a.s.
Priority to PCT/CZ2021/000019 priority Critical patent/WO2022237921A1/en
Publication of WO2022237921A1 publication Critical patent/WO2022237921A1/en

Links

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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4664—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages with more than three parts, e.g. two end rings connected by individual stays
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4676—Details of individual pockets, e.g. shape or roller retaining means of the stays separating adjacent cage pockets, e.g. guide means for the bearing-surface of the rollers
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/502—Cages for rollers or needles formed of interconnected members, e.g. chains formed of arcuate segments retaining one or more rollers or needles
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/52—Positive connections with plastic deformation, e.g. caulking or staking
    • F16C2226/54—Positive connections with plastic deformation, e.g. caulking or staking with rivets
    • 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
    • F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
    • F16C2240/30—Angles, e.g. inclinations
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to segmented cages, in particular for tapered roller bearings, for housing wind turbine shafts.
  • Wind turbines have very large bearing diameters. Tapered roller bearings are used in wind turbines with variously designed, mainly plastic cages, which have advantageous material properties due to the low thermal expansion and low thermal conductivity. These cages have a large diameter and they are therefore manufactured as segmented cages with different segment shapes which are then joined together at their faces. The joining of the segments creates a segmented cage which encircles the inner ring of the bearing and,, together with rolling elements, creates a bearing semi-assembly which is pressed onto the main shaft of the wind turbine. Because the cage has to ensure the cohesion of the bearing semi-assembly during manipulation and lifting, the individual segments have to be firmly connected together, so that the cage does not collapse when the semi-assembly is lifted
  • the prior art discloses a cage as introduced in document DE 10 2008 011 112 A1, which consists of a plurality of segments in the form of a circular arc, the side walls of which are provided with prismatic protrusions on one face and prismatic grooves on the opposite face, which correspond with its negative shape to the prismatic protrusions, so that adjacent arc segments of the cage fit together circumferentially like lodes, as shown in Fig.
  • three pairs of shaped projections are arranged to secure the position of the tapered roller elements, which have transverse holes into which pins by which the two opposite side sections of the cage are connected, fit.
  • each arc- shaped segment contains central bridges and half-bridges on both sides which are provided with bottom feet of columnar portions, however, the connection of the segments is again provided on the side walls of the segments.
  • a cage for a tapered bearing of a wind turbine comprising arc-shaped segments, each segment comprises protrusions with feet separating the individual tapered rollers.
  • the protrusions with feet act as guides for tapered roller elements. After connecting all segments, a gap is left between the first and the last segment, which serves as an dilatation joint.
  • a cage consisting of arc-shaped segments having bridges, wherein the outermost bridge of the segment is always provided with rectangular locks with projections, while the outermost bridge of the adjacent segment is provided with locks of negative shape so that the two outermost bridges with locks fit into each other.
  • the segments are of metal, and are welded together. This method of joining is not suitable for non-weldable materials.
  • the aim of the invention is to present a segmented cage for a large tapered roller bearing, especially for wind power plants, which would be functional and safe.
  • segment bearing cage which is characterised by the fact that the half-bridges of the segments are always provided with at least two holes which are angled towards the centre of the segment at an angle on the first half-bridge and with two holes, which are angled away from the centre of segment on the opposite second half-bridge, whereas the spacing between the holes, measured on the axes of the holes on the outer surface of the half- bridge, is equal to the spacing between the holes, measured on the axes of the holes on the outer surface of the opposite half-bridge, for the creation of mutual continuously aligned and concentric holes after two adjacent half-bridges are joined together, whereas in the holes the shanks of the rivets provided with an end part for clinching are arranged.
  • the angle of the holes is between 10 and 45°.
  • the holes and the recesses are always four and they are arranged in the comers of the half-bridges and are arranged in pairs axially below each other.
  • the segments of the cage are created by injection molding technology.
  • Fig. 1 is a perspective view of a segmented bearing cage according to the prior art
  • Fig. 2 is a perspective view of a segment of a bearing cage according to the invention
  • Fig. 3 is a detailed view of a cross-section of a non-riveted joint of two cage segments of Fig. 2
  • Fig. 4 is a detailed view of a cross-section of a riveted joint of two cage segments of Fig. 2.
  • Fig. 2 shows a segment 1 of a tapered roller bearing cage in perspective view.
  • the segment 1 of the cage is arc-shaped and comprises a first outer side 2, an opposing second outer side 9, which are transversely connected at the middle of their length by a central bridge 4 and at the ends of their length they are connected by half-bridges 3, 3' which, after two segments 1 are joined, create a bridge as large as the central bridge 4.
  • the first outer side 2 is provided with two outer hollows 14 and one inner hollow 18 having a depth of almost the entire height of the outer side 2.
  • the outer side 2 is formed by thin walls in order to prevent too much material being injected and to prevent shrinkage cavities in the material structure.
  • the second outer side 9 is from the outside provided with an arc groove 19.
  • a relief 20 is provided under the hollows 14, 18 to prevent the cage from colliding in operation with the bearing ring.
  • the central bridge 4 is provided on both sides with lower guiding projections 6 on the lower curvature and upper guiding projections 5 arranged between them on the upper side. These projections 5, 6 fix the tapered roller bearing elements.
  • the half-bridges 3, 3' are provided with these projections 5, 6 only on the inner side.
  • the central bridge 4 is provided with a relieve recess 15 at the top.
  • the half-bridges 3, 3* are provided with an opened recess 16.
  • the recesses 15, 16 make the wall thinner and have the effect of making the wall more flexible, which helps to accommodate the tapered roller elements.
  • a bearing semi-assembly consisting of an inner ring, cage and rolling elements is first pressed Onto the main shaft of the wind turbine.
  • the connection of the segments 1 has to be well secured. According to the invention, this is done as follows:
  • the half-bridges 3, 3' in the present embodiment are provided with four holes 7 in the comers of the segments 1 which are angled towards the centre of the segment 1 on the half-bridge 3 at an angle a preferably from 10 to 45° and at the same angle ⁇ four holes 7' are angled away from the centre of the segment 1 on the half-bridge 3'.
  • a minimalist variant can also be imagined, where the half-bridges (3, 3') of the segments 1 are always provided with at least two holes 7 which are angled towards the centre of the segment 1 at an angle a on the half-bridge 3 and the two holes T are angled at the same angle a away from the centre of the segment 1 on the half-bridge 3'.
  • the inclination is best seen in detail in Fig. 3 and 4.
  • the spacing H between the holes 7 measured on the axis of the holes 7 on the outer surface of the first half-bridge 3 is equal to the spacing h of the holes 7' measured on the axis of the holes 7' on the outer surface of the opposite second half-bridge 3', so that when two adjacent half-bridges 3, 3' of the two segments 1 are connected, the holes 7, 7' are smoothly aligned and concentric for easy insertion of a shank 11 of the rivet 17.
  • the rivet 17 can obviously be inserted into the connection in the opposite way to that shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Segmented bearing cage, consisting of segments provided with bridges and half- bridges, which are provided with upper mounting protrusions and lower guiding protrusions whereas after two segments are assembled, the half-bridges create a bridge of complete shape and size, whereas the half-bridges (3, 3') of the segments (1) are always provided with at least two holes (7) which are angled towards the centre of the segment (1) at an angle (α) on the first half-bridge (3) and with two holes (7'), which are angled away from the centre of segment (1) on the opposite second half-bridge (3'}, whereas the spacing (H) between the holes (7), measured on the axes of the holes (7) on the outer surface of the half-bridge (3), is equal to the spacing (h) between the holes (7'), measured on the axes of the holes (7') on the outer surface of the opposite half-bridge (3'), for the creation of mutual continuously aligned and concentric holes (7, 7') after two adjacent half-bridges (3, 3') are joined together, whereas in the holes (7, 7') the shanks (11) of the rivets (17) provided with an end part (12) for clinching are arranged.

Description

Segmented bearing cage
Technical field
The invention relates to segmented cages, in particular for tapered roller bearings, for housing wind turbine shafts.
State of the art
Wind turbines have very large bearing diameters. Tapered roller bearings are used in wind turbines with variously designed, mainly plastic cages, which have advantageous material properties due to the low thermal expansion and low thermal conductivity. These cages have a large diameter and they are therefore manufactured as segmented cages with different segment shapes which are then joined together at their faces. The joining of the segments creates a segmented cage which encircles the inner ring of the bearing and,, together with rolling elements, creates a bearing semi-assembly which is pressed onto the main shaft of the wind turbine. Because the cage has to ensure the cohesion of the bearing semi-assembly during manipulation and lifting, the individual segments have to be firmly connected together, so that the cage does not collapse when the semi-assembly is lifted
The prior art discloses a cage as introduced in document DE 10 2008 011 112 A1, which consists of a plurality of segments in the form of a circular arc, the side walls of which are provided with prismatic protrusions on one face and prismatic grooves on the opposite face, which correspond with its negative shape to the prismatic protrusions, so that adjacent arc segments of the cage fit together circumferentially like lodes, as shown in Fig. Inside the segment, three pairs of shaped projections are arranged to secure the position of the tapered roller elements, which have transverse holes into which pins by which the two opposite side sections of the cage are connected, fit.
In the document W02006094661A1, a bearing cage is presented where each arc- shaped segment contains central bridges and half-bridges on both sides which are provided with bottom feet of columnar portions, however, the connection of the segments is again provided on the side walls of the segments.
In the document US9810263 B2, a cage for a tapered bearing of a wind turbine is disdosed comprising arc-shaped segments, each segment comprises protrusions with feet separating the individual tapered rollers. The protrusions with feet act as guides for tapered roller elements. After connecting all segments, a gap is left between the first and the last segment, which serves as an dilatation joint.
The method of joining segments is then described in JP2007285507 A, wherein the ends of segments have shaped locks that fit together by mutually corresponding shapes. This is a variation of the connection shown in Figure 1.
In the document ON 111536160 a cage is presented consisting of arc-shaped segments having bridges, wherein the outermost bridge of the segment is always provided with rectangular locks with projections, while the outermost bridge of the adjacent segment is provided with locks of negative shape so that the two outermost bridges with locks fit into each other. The segments are of metal, and are welded together. This method of joining is not suitable for non-weldable materials.
The aim of the invention is to present a segmented cage for a large tapered roller bearing, especially for wind power plants, which would be functional and safe.
Summary of the invention
The above mentioned deficiencies are eliminated by the segment bearing cage according to the invention, which is characterised by the fact thatthe half-bridges of the segments are always provided with at least two holes which are angled towards the centre of the segment at an angle on the first half-bridge and with two holes, which are angled away from the centre of segment on the opposite second half-bridge, whereas the spacing between the holes, measured on the axes of the holes on the outer surface of the half- bridge, is equal to the spacing between the holes, measured on the axes of the holes on the outer surface of the opposite half-bridge, for the creation of mutual continuously aligned and concentric holes after two adjacent half-bridges are joined together, whereas in the holes the shanks of the rivets provided with an end part for clinching are arranged.
In preferred embodiment around the holes there are recesses for the head of the rivet, respectively later clinched end head of the rivet, whereas the spacing between the perpendicular axes of the recesses on the first half-bridge is smaller than the spacing between the perpendicular axes of the recesses on the opposite second half-bridge.
In another embodiment the angle of the holes is between 10 and 45°.
In another embodiment the holes and the recesses are always four and they are arranged in the comers of the half-bridges and are arranged in pairs axially below each other. In another embodiment the segments of the cage are created by injection molding technology.
Brief description of drawings
The invention will be further described using drawings, where Fig, 1 is a perspective view of a segmented bearing cage according to the prior art, Fig. 2 is a perspective view of a segment of a bearing cage according to the invention, Fig. 3 is a detailed view of a cross-section of a non-riveted joint of two cage segments of Fig. 2, and Fig. 4 is a detailed view of a cross-section of a riveted joint of two cage segments of Fig. 2.
Preferred embiment of the invention
Fig. 2 shows a segment 1 of a tapered roller bearing cage in perspective view. The segment 1 of the cage is arc-shaped and comprises a first outer side 2, an opposing second outer side 9, which are transversely connected at the middle of their length by a central bridge 4 and at the ends of their length they are connected by half-bridges 3, 3' which, after two segments 1 are joined, create a bridge as large as the central bridge 4.
For technological manufacturing reasons, the first outer side 2 is provided with two outer hollows 14 and one inner hollow 18 having a depth of almost the entire height of the outer side 2. Thus, the outer side 2 is formed by thin walls in order to prevent too much material being injected and to prevent shrinkage cavities in the material structure. For the same reasons, the second outer side 9 is from the outside provided with an arc groove 19. At the bottom, a relief 20 is provided under the hollows 14, 18 to prevent the cage from colliding in operation with the bearing ring.
The central bridge 4 is provided on both sides with lower guiding projections 6 on the lower curvature and upper guiding projections 5 arranged between them on the upper side. These projections 5, 6 fix the tapered roller bearing elements. The half-bridges 3, 3' are provided with these projections 5, 6 only on the inner side. The central bridge 4 is provided with a relieve recess 15 at the top. The half-bridges 3, 3* are provided with an opened recess 16. The recesses 15, 16 make the wall thinner and have the effect of making the wall more flexible, which helps to accommodate the tapered roller elements.
As mentioned above, a bearing semi-assembly consisting of an inner ring, cage and rolling elements is first pressed Onto the main shaft of the wind turbine. In order the segmented cage surrounds the inner ring, the connection of the segments 1 has to be well secured. According to the invention, this is done as follows: The half-bridges 3, 3' in the present embodiment are provided with four holes 7 in the comers of the segments 1 which are angled towards the centre of the segment 1 on the half-bridge 3 at an angle a preferably from 10 to 45° and at the same angle α four holes 7' are angled away from the centre of the segment 1 on the half-bridge 3'. A minimalist variant can also be imagined, where the half-bridges (3, 3') of the segments 1 are always provided with at least two holes 7 which are angled towards the centre of the segment 1 at an angle a on the half-bridge 3 and the two holes T are angled at the same angle a away from the centre of the segment 1 on the half-bridge 3'. The inclination is best seen in detail in Fig. 3 and 4.
The spacing H between the holes 7 measured on the axis of the holes 7 on the outer surface of the first half-bridge 3 is equal to the spacing h of the holes 7' measured on the axis of the holes 7' on the outer surface of the opposite second half-bridge 3', so that when two adjacent half-bridges 3, 3' of the two segments 1 are connected, the holes 7, 7' are smoothly aligned and concentric for easy insertion of a shank 11 of the rivet 17. This can be seen in detail in Fig. 3. The rivet 17 can obviously be inserted into the connection in the opposite way to that shown. Around the holes 7, 7', recesses 8, 8' are provided on the inner side for a head 10 of the rivet 17 or the later clinched end part 12 of the rivet 17 into the end head 13, which can be seen in Fig. 4. The spacing K between the perpendicular axes of the recesses 8 is smaller at the first half-bridge 3 than the spacing k between the perpendicular axes of the recesses 8' at the opposite second half-bridge 3' due to the inclination of the shank 11 of the rivet 17. In entire view, the spacings h, k are indicated in Fig. 2.
Due to the inclination of shanks 11 of the rivets 17 and of holes holes 7, 7 an increased clamping effect of adjacent segments 1 is secured

Claims

1. Segmented bearing cage, consisting of segments provided with bridges and haff- bridges, which are provided with upper mounting protrusions and lower guiding protrusions whereas after two segments are assembled, the half-bridges create a bridge of complete shape and size, characterized in that the half-bridges (3, 3') of the segments (1) are always provided with at least two holes (7) which are angled towards the centre of the segment (1) at an angle (a) on the first half-bridge (3) and with two holes (7'), which are angled away from the centre of segment (1) on the opposite second haff-bridge (3'), whereas the spacing (H) between tile holes (7), measured on the axes of the holes (7) on the outer surface of the half-bridge (3), is equal to the spacing (h) between the holes (7'), measured on the axes of the holes (7') on the outer surface of the opposite half-bridge (3'), for the creation of mutual continuously aligned and concentric holes (7, 7') after two adjacent half-bridges (3, 3') are joined together, whereas in the holes (7, 7') the shanks (11) of the rivets (17) provided with an end part (12) for clinching are arranged.
2. Segmented bearing cage according to claim 1, characterized in that around the holes (7, 7') there are recesses (8, 8') for the head (10) of the rivet (17), respectively later clinched end head (13) of the rivet (17), whereas the spacing (K) between the perpendicular axes of the recesses (8) on the first half-bridge (3) is smaller than the spacing (k) between the perpendicular axes of the recesses (8') on the opposite second half-bridge (3').
3. The segmented bearing cage according to claim 1, characterized in that the angle a of the holes (7, 7') is between 10 and 45°.
4. The segmented bearing cage according to claim 1 , characterized in that the holes (7, 7') and the recesses (8, 8') are always four and they are arranged in the comers of the half-bridges (3, 3') and are arranged in pairs axially below each other.
5. The segmented bearing cage of claim 1 , characterized in that the segments (1) of the cage are created by injection molding technology.
PCT/CZ2021/000019 2021-05-14 2021-05-14 Segmented bearing cage WO2022237921A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CZ2021/000019 WO2022237921A1 (en) 2021-05-14 2021-05-14 Segmented bearing cage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CZ2021/000019 WO2022237921A1 (en) 2021-05-14 2021-05-14 Segmented bearing cage

Publications (1)

Publication Number Publication Date
WO2022237921A1 true WO2022237921A1 (en) 2022-11-17

Family

ID=76325320

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2021/000019 WO2022237921A1 (en) 2021-05-14 2021-05-14 Segmented bearing cage

Country Status (1)

Country Link
WO (1) WO2022237921A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009980B3 (en) * 2005-03-04 2006-06-14 Aktiebolaget Skf Antifriction bearing has inner ring along with truncated cone like inner surface, which is limited laterally by first board, second board, and outer ring with retaining segments which stand in interference with inner ring
JP2007285507A (en) 2006-03-22 2007-11-01 Ntn Corp Roller bearing, cage segment, spacer, and main shaft supporting structure for wind power generator
DE102008011112A1 (en) 2008-02-26 2009-08-27 Schaeffler Kg Cage for rolling body in antifriction bearing, has bearing rings joined together under formation of bags, and segment of one of bearing rings joined to two segments of another bearing ring, where segments are made of plastic
US20140248018A1 (en) * 2006-09-08 2014-09-04 Ntn Corporation Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator
WO2016088599A1 (en) * 2014-12-02 2016-06-09 Ntn株式会社 Roller bearing
WO2020018096A1 (en) * 2018-07-19 2020-01-23 The Timken Company Split tapered roller bearing
US20200256391A1 (en) * 2019-02-07 2020-08-13 Aktiebolaget Skf Bearing cage segment including welding-material bodies or locations

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005009980B3 (en) * 2005-03-04 2006-06-14 Aktiebolaget Skf Antifriction bearing has inner ring along with truncated cone like inner surface, which is limited laterally by first board, second board, and outer ring with retaining segments which stand in interference with inner ring
WO2006094661A1 (en) 2005-03-04 2006-09-14 Ab Skf Tapered roller bearing having cage segments which are guided on the inner ring
JP2007285507A (en) 2006-03-22 2007-11-01 Ntn Corp Roller bearing, cage segment, spacer, and main shaft supporting structure for wind power generator
US20140248018A1 (en) * 2006-09-08 2014-09-04 Ntn Corporation Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator
US9810263B2 (en) 2006-09-08 2017-11-07 Ntn Corporation Retainer segment for a roller bearing for supporting a main shaft of a wind-power generator
DE102008011112A1 (en) 2008-02-26 2009-08-27 Schaeffler Kg Cage for rolling body in antifriction bearing, has bearing rings joined together under formation of bags, and segment of one of bearing rings joined to two segments of another bearing ring, where segments are made of plastic
WO2016088599A1 (en) * 2014-12-02 2016-06-09 Ntn株式会社 Roller bearing
WO2020018096A1 (en) * 2018-07-19 2020-01-23 The Timken Company Split tapered roller bearing
US20200256391A1 (en) * 2019-02-07 2020-08-13 Aktiebolaget Skf Bearing cage segment including welding-material bodies or locations
CN111536160A (en) 2019-02-07 2020-08-14 斯凯孚公司 Bearing cage segment including weld material location

Similar Documents

Publication Publication Date Title
US7703985B2 (en) Bearing, a wind turbine and methods of manufacturing a bearing
EP0743465B2 (en) Rolling guide apparatus and method of manufacturing movable block of rolling guide apparatus
US8764304B2 (en) Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator
US3405434A (en) Multi-row cylindrical roller bearings
EP3351815B1 (en) Tapered roller bearing and manufacturing method for tapered roller bearing
CN102695886A (en) Double row tapered bearing assembly and wind turbine
PH12015500437B1 (en) End plate for concrete piles
CN102149932A (en) Method of manufacturing a split bearing ring
KR20140033342A (en) Axial-radial rolling contact bearing, in particular for supporting rotor blades on a wind turbine
BR102014026377B1 (en) Soil displacement device and spiral screw piles
WO2022237921A1 (en) Segmented bearing cage
US6485186B2 (en) Split bearing ring and method for manufacturing same
KR100453615B1 (en) Positioning device with a solid cylindrical pin
US6203200B1 (en) Linear motion guide apparatus employing a roller train
US4875787A (en) Bearing bushing for universal joint pins
CN108869473B (en) Textured interference joint face group design method
CA1111411A (en) Rotary drill bit with rotary cutters
US9145917B2 (en) Cage for radial roller bearing
CN108869536A (en) A kind of oscillating bearing and its manufacture craft
US20120114279A1 (en) Roller for a rolling bearing
RU2428295C1 (en) Shaft-sleeve interference joint
KR102132818B1 (en) composite roller
CN113982018B (en) Assembled steel pipe pile top bearing structure
US7140826B2 (en) Shaped anchor
JPS6220019B2 (en)

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21730797

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21730797

Country of ref document: EP

Kind code of ref document: A1