CN101341349B - Rolling bearing, retainer segment, and main shaft support structure for wind-driven generator - Google Patents
Rolling bearing, retainer segment, and main shaft support structure for wind-driven generator Download PDFInfo
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- CN101341349B CN101341349B CN2006800478464A CN200680047846A CN101341349B CN 101341349 B CN101341349 B CN 101341349B CN 2006800478464 A CN2006800478464 A CN 2006800478464A CN 200680047846 A CN200680047846 A CN 200680047846A CN 101341349 B CN101341349 B CN 101341349B
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- retainer
- roller
- retainer member
- rolling bearing
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- 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
Abstract
A rolling bearing (11) comprises a plurality of rollers, and retainer segments (15a) retaining the rollers and split along a split line extending in an axial direction. The retainer segment (15a) has a plurality of pillar parts (22a), (22b), (22c) and (22d) extending in the axial direction so as to form first pockets (23a) and (23c) and a second pocket (23b) for housing the rollers, and a connection part extending in a circumferential direction so as to connect the plurality of pillar parts (22a) to (22d). Here, outer diameter side stopper parts (24a), (24b), (24c) and (24d) are provided on the outer diameter side of the pillar parts (22a) to (22d) positioned on the circumferential both sides of the first pockets (23a) and (23c) to limit the movement of the roller housed in the first pockets (23a) and (23c) toward the outer diameter side, and inner diameter side roller stopper parts (25a) and (25b) are provided on the inner diameter side of the pillar parts (22b) and (22c) positioned on the circumferential both sides of the second pocket (23b) to limit the movement of the roller housed in the second pocket (23b) toward the inner diameter side. Thus the retainer segments (15a) function as a roller guide.
Description
Technical field
The present invention relates to rolling bearing, retainer member and wind driven generator principal shaft supporting structure.
Background technique
Rolling bearing, generally by outer ring, inner ring, be configured in a plurality of rollers between inner ring and the outer ring, keep the retainer of a plurality of rollers to constitute.About keeping the retainer of roller, according to its material or production method etc., there are resin-made cage, punching out retainer, cutting retainer, welding retainer etc. multiple, separately use according to purposes or performance respectively.It is one-piece type that retainer is generally, and that is to say that parts by ring-type constitute.
, the rolling bearing of the wind driven generator principal shaft of the blade that is used to accept wind is installed here about supporting, owing to need bear big load, so rolling bearing itself also maximizes.So, each component parts such as roller or retainer also maximizes, and it is difficult that the production of parts or assembling become.In this case, if can cut apart each parts, then be easy to produce or assembling.
The technology of the relevant Splittable retainer of retainer being cut apart through the cutting lines that axially extends, open in European patent communique 1408248A2.Figure 10 is illustrated in the perspective view that disclosed Splittable retainer is the retainer member among the European patent communique 1408248A2.With reference to Figure 10, retainer member 101a has a plurality of post portion 103 of accommodating for formation that a plurality of pocket 104 of roller axially extend and for linking linking department 102a, the 102b that a plurality of post portion 103 extends in the contour direction.Internal side diameter in the post portion 103 of the contour direction both sides that are positioned at each pocket 104 is provided with internal side diameter roller retainer, is used to prevent that the rollers that are housed in the pocket 104 from deviating to internal side diameter.On the other hand, be not provided for the external diameter roller retainer that prevents that roller from deviating to outside diameter, put down at outside diameter.In addition, be provided with the protuberance 106a that is used to guarantee with the distance of outer ring in the end of the outside diameter of post portion 103, be provided with the protuberance 106b (not shown) that is used to guarantee with the distance of inner ring in the end of the internal side diameter of post portion 103.
Figure 11 is one one the sectional view that expression comprises the rolling bearing of retainer member 101a shown in Figure 10.If with reference to Figure 10 and Figure 11, the formation of the rolling bearing 111 that comprises retainer member 101a is described, rolling bearing 111 has outer ring 112, inner ring 113, a plurality of roller 114, a plurality of retainer member 101a that keep a plurality of rollers 114,101b, 101c etc.A plurality of rollers 114 are kept by a plurality of retainer member 101a near the most stable position of the activity of roller is PCD (Pitch Circle Diameter) 105.The retainer member 101a that keeps a plurality of rollers 114, the mode of joining with the end face 107 of contour direction is conjointly combined at retainer member 101b, the 101c of contour direction and adjacent same shape.A plurality of retainer member 101a, 101b, 101c etc. are conjointly combined, and form a ring-type retainer that is included in the rolling bearing 111.
According to European patent communique 1408248A2, retainer member 101a is through the protuberance 106a on the outside diameter end face that is located at post portion 103 and be located at the protuberance 106b on the internal side diameter end, guarantees from outer ring 112 and the distance of inner ring 113.That is to say that retainer member 101a is the rail wheel guide member by outer ring 112 or inner ring 113 guide members.
As stated, each retainer member 101a, 101b, 101c etc. are independent, do not link in the contour direction, be under the situation of rail wheel guide member therefore at retainer member 101a etc., easily in the outer ring 112 and 113 of inner rings move, in that radially this position is unstable.
Specifically be; For example; Under the situation that rolling bearing 111 landscape configuration of above-mentioned formation are used, when retainer member 101a was in the position in court sky, retainer member 101a downward direction moved; Contact with protuberance 106b on the internal side diameter end face that is located at post portion 103 with the outer diametric plane 115 of the inner ring that is positioned at the bottom 113, become inner ring guide member to inner ring 113 guide members.On the other hand; When retainer member 101a is in the position on court ground; Retainer member 101a downward direction motion, the aperture surface 116 that is positioned at the outer ring 112 of bottom contacts with protuberance 106a on the outside diameter end face that is located at post portion 103, becomes the outer ring guide member to outer ring 112 guide members.
Like this; Retainer member 101a is easily to radially moving; If the position according in the rolling bearing 111 becomes the inner ring guide member, or the outer ring guide member, then the position radially of retainer member 101a is unstable; When contacting, have abnormal sound or the damaged misgivings of retainer member 101a take place with outer ring 112 or inner ring 113.
In addition, when bearing rotated, protuberance 106a scraped the oil film of getting plane of trajectory orbital 115,116, and the significantly reduced misgivings of the greasy property that makes rolling bearing 111 are arranged.
Summary of the invention
The objective of the invention is to, a kind of generation or damaged little rolling bearing of misgivings of abnormal sound is provided.
Another object of the present invention is to, a kind of retainer member that stably is configured on the rolling bearing is provided.
Another purpose of the present invention is, a kind of generation or damaged little wind driven generator principal shaft supporting structure of misgivings of abnormal sound is provided.
Rolling bearing of the present invention possesses a plurality of rollers and keeps the retainer of a plurality of rollers.Said retainer is divided into a plurality of retainer members by the cutting lines that axially extends.Each retainer member has for formation accommodates the 1st pocket of roller and a plurality of post portions that the 2nd pocket is axially extended and extends the linking department that links a plurality of post portion in the contour direction.Post portion has and is used for limiting the roller that is housed in the 1st pocket to the outside diameter roller retainer of external diameter side shifting be used to limit the roller that is housed in the 2nd pocket internal side diameter roller retainer to the internal diameter side shifting.
Through formation like this, can be through the moving to internal side diameter of the restriction of the outside diameter roller retainer in the post portion that is located at retainer member retainer member.In addition, can be through the moving to outside diameter of internal side diameter roller retainer restriction retainer member.As a result, the retainer member becomes the roller guide member, stably is configured in the rolling bearing.So, can suppress the retainer member contacts generation or the retainer member etc. of the abnormal sound that causes with outer ring or inner ring breakage.Here, so-called the 1st pocket refers to be provided with and is used to prevent the pocket of roller to the mechanism that outside diameter is deviate from, and so-called the 2nd pocket refers to be provided with and is used to prevent the pocket of roller to the mechanism that internal side diameter is deviate from.In addition, so-called retainer member is the monomer that one-piece type ring-type retainer is cut apart through the cutting lines that axially extends, and comprises being used to more than 2 to accommodate the pocket of roller.That is to say,, form the retainer of 1 ring-type through connect a plurality of retainer members of ground combination in the contour direction.
The retainer member is through a plurality of retainers that are combined to form 1 ring-type, so its 1 each and every one shape is little, and simple.Therefore make easily, producibility improves, and operability or assembling performance are also good simultaneously.
Preferably, the post portion that is configured between the 1st pocket and the 2nd pocket has outside diameter roller retainer and internal side diameter roller retainer.So,, therefore the 1st pocket and the 2nd pocket adjacency can be made, pocket number contained in the retainer member can be reduced owing to can outside diameter roller retainer and internal side diameter roller retainer be located in 1 post portion.
More preferably, the retainer member has 3 pocket at least.So, can contain the 1st pocket or the 2nd pocket more than 2.So, owing to for outside diameter roller retainer or internal side diameter roller retainer, also can contain wherein any one in ground more than 2, in rolling bearing, the retainer member disappears with respect to the misgivings that PCD tilts, and stability is improved more.
Most preferably, the retainer member is a resin system.The retainer member is compared with one-piece type retainer, small-sized and simple shape.So, through the retainer member is defined as resin system, can be easy to produce in enormous quantities through manufacturings such as injection mouldings.
Most preferably, roller is conical roller.Large-size rolling bearing in the main shaft of above-mentioned wind-driven generator etc., using owing to will bear big axial load or moment load, radial load etc., therefore is fit to the conical rolling bearing that employing forms roller conical roller.If adopt such conical rolling bearing; Even when conical rolling bearing becomes large-scale; Producibility is also good, simultaneously can with the retainer component stability be configured in the rolling bearing, can suppress to contact the generation of the abnormal sound that causes etc. with outer ring etc.
In another aspect of this invention, the retainer member keeps a plurality of rollers, is cut apart by the cutting lines that axially extends.In addition, the retainer member has a plurality of post portions of axially extending and forming the 1st and the 2nd pocket of accommodating roller and for linking the linking department that a plurality of post portion extends towards the contour direction.Here, post portion has and is used for limiting the roller that is housed in the 1st pocket to the outside diameter roller retainer of external diameter side shifting be used to limit the roller that is housed in the 2nd pocket internal side diameter roller retainer to the internal diameter side shifting.
Such retainer member is owing to through the roller guide member, therefore can stably be configured in the rolling bearing.So, can inhibition contact the generation of the abnormal sound that causes with outer ring or inner ring.
In still another aspect of the invention, the wind driven generator principal shaft supporting structure, is loaded in the fixed component and the rolling bearing of rotatable supporting spindle freely at the main shaft that has that blade, an end of accepting wind-force are fixed on the said blade and together rotate with blade.Said rolling bearing has a plurality of rollers and keeps the retainer of a plurality of rollers.Retainer is divided into a plurality of retainer members by the cutting lines that axially extends.Each retainer member has for formation accommodates the 1st pocket of roller and a plurality of post portions that the 2nd pocket is axially extended and extends the linking department that links a plurality of post portion in the contour direction.Here, post portion has and is used for limiting the roller that is housed in the 1st pocket to the outside diameter roller retainer of external diameter side shifting be used to limit the roller that is housed in the 2nd pocket internal side diameter roller retainer to the internal diameter side shifting.
Wind driven generator principal shaft supporting structure with such rolling bearing of having the retainer member, because the retainer member is stably disposed, the misgivings that therefore abnormal sound or breakage take place reduce.
According to the present invention, the retainer member is through being located at the moving to internal side diameter of the outside diameter roller retainer restriction retainer member in the post portion.In addition, through being located at the moving to outside diameter of the internal side diameter roller retainer restriction retainer member in the post portion.As a result, the retainer member becomes the roller guide member, stably is configured in the rolling bearing.So, just can suppress the retainer member contacts generation or the retainer member etc. of the abnormal sound that causes with outer ring or inner ring damage.
In addition, such retainer member can be guided member by roller, therefore can stably be configured in the rolling bearing.So, outer ring and inner ring contacts minimizing.
In addition, has the wind driven generator principal shaft supporting structure of the rolling bearing that comprises such retainer member, because the misgivings minimizing of abnormal sound or damage by configuration stably, therefore takes place the retainer member.
Another purpose again of the present invention is, a kind of generation or damaged misgivings rolling bearing little, that greasy property is good of abnormal sound is provided, stably is configured in the retainer member on the rolling bearing and possess the wind driven generator principal shaft supporting structure of such rolling bearing.
Rolling bearing of the present invention possesses: have the inner ring of lip part, along a plurality of rollers of the outer diametric plane configuration of inner ring, retainer with the pocket that is used to accommodate a plurality of rollers.And retainer is divided into a plurality of retainer members by the cutting lines that axially extends.In addition; Preferred each retainer member have circular shape a pair of ring part, be configured between a pair of ring part and for forming pocket to axially extended a plurality of post portions and outstanding to radially inner side from the aperture surface of a pair of ring part, and with the inner ring abutting part of the lip part butt of inner ring.Preferred post portion has restriction and is housed in the retainer of the interior roller of pocket to the internal diameter side shifting.
In the rolling bearing of above-mentioned formation, limiting to moving by the inner ring lip part of radially inner side of each retainer member limited by roller to moving of radial outside.Thus, the movement of the retainer in bearing when rotation is stable, can suppress the retainer member contacts generation or the retainer member etc. of the abnormal sound that causes with outer ring or inner ring damage.In addition, because the retainer member does not contact with the plane of trajectory orbital of Internal and external cycle when bearing rotates, thereby can access the good rolling bearing of lubricity.
Preferably, the retainer member is a resin system.The retainer member is compared with one-piece type retainer, small-sized and simple shape.So, through the retainer member is defined as resin system, can be easy to produce in enormous quantities through manufacturings such as injection mouldings.
Preferably, roller is conical roller.Large-size rolling bearing in the main shaft of above-mentioned wind-driven generator etc., using owing to will bear big axial load or moment load, radial load etc., therefore is fit to the conical rolling bearing that employing forms roller conical roller.If adopt such conical rolling bearing; Even when conical rolling bearing reaches large-scale; Producibility is also good, simultaneously can with the retainer component stability be configured in the rolling bearing, can suppress to contact the generation of the abnormal sound that causes etc. with outer ring etc.
Retainer member of the present invention is to have the pocket of accommodating a plurality of rollers, the retainer member that the cutting lines that quilt axially extends is cut apart.Specifically be; Each retainer member have circular shape a pair of ring part, be configured between a pair of ring part and for forming pocket to axially extended a plurality of post portions and outstanding to radially inner side from the aperture surface of a pair of ring part, and with the inner ring abutting part of the lip part butt of inner ring.
Such retainer member is because by the lip part guide member of bearing inner race, so can not contact with the plane of trajectory orbital of bearing inner race.As a result, the retainer member is not scraped the oil film of getting plane of trajectory orbital during the bearing rotation, thereby the greasy property of bearing improves.
Wind driven generator principal shaft supporting structure of the present invention, is loaded in the fixed component and the rolling bearing of rotatable supporting spindle freely at the main shaft that has that blade, an end of accepting wind-force are fixed on the blade and together rotate with blade.About rolling bearing, possesses inner ring, along a plurality of rollers of the outer diametric plane configuration of inner ring with retainer with the pocket that is used to accommodate a plurality of rollers with lip part.And retainer is divided into a plurality of retainer members by the cutting lines that axially extends.In addition; Each retainer member have circular shape a pair of ring part, be configured between a pair of ring part and for forming pocket to axially extended a plurality of post portions and outstanding to radially inner side from the aperture surface of a pair of ring part, and with the inner ring abutting part of the lip part butt of inner ring.
The rolling bearing of above-mentioned formation, the retainer member does not contact with the plane of trajectory orbital of inner ring during owing to the bearing rotation, thereby lubricity is good.Through with the bearing of such rolling bearing, can access the high wind driven generator principal shaft supporting structure of reliability as the main shaft of supporting wind power generation machine.
In addition, the moving and to be limited radially of retainer member by the lip part of inner ring.As a result, can suppress the retainer member and contact the generation of the abnormal sound that causes or the breakage of retainer member with outer ring and inner ring, can obtain the good rolling bearing of lubricity simultaneously.
In addition, be used for the bearing of supporting wind power generation machine main shaft, can obtain the high wind driven generator principal shaft supporting structure of reliability through the rolling bearing that will possess such retainer member.
Description of drawings
Fig. 1 is the sectional view when the section that comprises post portion cuts off the retainer member of a mode of execution of the present invention.
Fig. 2 is the perspective view of the retainer member of a mode of execution of the present invention.
Fig. 3 is one one a sectional view of the rolling bearing of an expression mode of execution of the present invention.
Fig. 4 A is the sectional view of the retainer member of another embodiment of the present invention, the situation when expression is arranged alternately the 1st pocket and the 2nd pocket.
Fig. 4 B is the sectional view of the retainer member of another embodiment of the present invention, the situation when expression is not arranged alternately the 1st pocket and the 2nd pocket.
Fig. 5 is the sectional view of the conical rolling bearing of expression another embodiment of the present invention.
Fig. 6 is the diagram when the arrow C direction is seen the conical rolling bearing shown in Fig. 5.
Fig. 7 is the sectional view of the D-D section of conical rolling bearing shown in Figure 5.
Fig. 8 is the diagram that a routine wind driven generator principal shaft supporting structure of rolling bearing of the present invention is adopted in expression.
Fig. 9 is the graphic side view of wind driven generator principal shaft supporting structure shown in Figure 8.
Figure 10 is the perspective view of retainer member in the past.
Figure 11 is the sectional view when the section that comprises post portion cuts off retainer member shown in Figure 10.
Embodiment
Below, with reference to description of drawings mode of execution of the present invention.Fig. 2 is the perspective view of the retainer member of an expression mode of execution of the present invention.Fig. 1 is with retainer member shown in Figure 2, the sectional view when being cut off by the section shown in the arrow A-A among Fig. 2.Have again, in Fig. 1, dot a plurality of rollers that the retainer member keeps, for the ease of understand linking department 21a, 21b is not shown.
With reference to Fig. 1 and Fig. 2, retainer member 15a is included as and forms 2 the 1st pocket 23a, 23c and 1 the 2nd pocket 23b accommodate roller and the 22a of post portion that axially extends, 22b, 22c, 22d and for linking linking department 21a, the 21b that 4 22a of post portion, 22b, 22c, 22d extend in the contour direction.Linking department 21a, 21b in the time of on being assembled into rolling bearing, form 1 ring-type retainer in order to connect a plurality of retainer member 15a etc. in the contour direction, have the curvature of regulation in the contour direction.That is to say, retainer member 15a be through the cutting lines that axially extends with one-piece type ring-type retainer, comprise the 1st and the 2nd pocket 23a～23c, the shape of cutting off, cutting apart.Have again,, suppose to comprise a plurality of linking department 21a, 21b here, but also can be 1.
At the 22a of post portion of the contour direction both sides that are positioned at the 1st pocket 23a, the outside diameter of 22b, be provided with and be used for limiting the roller that remains on the 1st pocket 23a outside diameter roller retainer 24a, 24b to the external diameter side shifting.Through formation like this, though retainer member 15a to the internal side diameter of axle, promptly the direction of the arrow B among Fig. 1 moves, therefore outside diameter roller retainer 24a, 24b are also blocked by roller, can limit retainer member 15a moving to internal side diameter.
In addition, be positioned at and the 22b of post portion of the contour direction both sides of the 2nd pocket 23b of the 1st pocket 23a adjacency, the internal side diameter of 22c, be provided with and be used for limiting the roller that remains on the 2nd pocket 23b internal side diameter roller retainer 25a, 25b to the internal diameter side shifting.Through formation like this, even suppose the outside diameter of retainer member 15a to axle, promptly with Fig. 1 in the motion of the opposite direction of arrow B, internal side diameter roller retainer 25a, 25b are also blocked by roller, therefore can limit moving to outside diameter.
In addition, be positioned at and the 22c of post portion of the contour direction both sides of the 1st pocket 23c of the 2nd pocket 23b adjacency, the outside diameter of 22d, be provided with and be used for limiting the roller that remains on the 1st pocket 23c outside diameter roller retainer 24c, 24d to the external diameter side shifting.Through formation like this, though retainer member 15a to the internal side diameter of axle, promptly the direction of the arrow B among Fig. 1 moves, outside diameter roller retainer 24c, 24d are also blocked by roller, thereby can limit retainer member 15a moving to internal side diameter.
Draw by above, though retainer member 15a to the internal diameter side shifting, the outside diameter roller retainer 24a of the 1st pocket 23a, 23c, 24b, 24c, 24d are also blocked by roller, thereby can limit moving to internal side diameter.In addition, though retainer member 15a to the external diameter side shifting, the internal side diameter roller retainer 25a of the 2nd pocket 23b, 25b are also blocked by roller, thereby can limit moving to outside diameter.So, the motion radially of retainer member 15a is limited by roller.Through forming such formation, retainer member 15a becomes so-called roller guide member, stably is configured in radial position.
In addition, because retainer member 15a etc. are independent separately, therefore the misgivings that tilt with respect to PCD16 are arranged in rolling bearing.Yet; Because adding up to, retainer member 15a has 3 the 1st pocket and the 2nd pocket; Specifically be to have 2 the 1st pocket 23a, 23c at the two ends of retainer member 15a; Central authorities at retainer member 15a have 1 the 2nd pocket 23b, so retainer member 15a reduces good stability with respect to the misgivings that PCD16 tilts.
Here, the 22b of post portion between the 1st pocket 23a and the 2nd pocket 23b has outside diameter roller retainer 24b at its outside diameter, has internal side diameter roller retainer 25a at internal side diameter.In addition,, equally also have outside diameter roller retainer 24c, have internal side diameter roller retainer 25b at internal side diameter at its outside diameter for the 22c of post portion between the 2nd pocket 23b and the 1st pocket 23c.Through formation like this, can make the 1st pocket 23a, 23c and the 2nd pocket 23b adjacency, can reduce the 1st and the 2nd pocket that comprises among the retainer member 15a as a whole simultaneously.
Fig. 3 is one one the sectional view that expression possesses the rolling bearing 11 of Fig. 1, retainer member 15a shown in Figure 2.With reference to Fig. 1, Fig. 2 and Fig. 3, rolling bearing 11 possesses outer ring 12, inner ring 13, be configured in a plurality of roller 14a between outer ring 12 and the inner ring 13, a plurality of retainer member 15a of 14b, 14c, maintenance roller 14a etc. etc.With retainer member 15b, the 15c of retainer member 15a adjacency, wide 26 relative mode with the outside of the 22a of post portion that is positioned at tip portion in the contour direction, 22d etc. is configured in the contour direction in rolling bearing 11.Through a plurality of connection combination retainer member 15a, 15b, 15c etc., form the retainer of 1 ring-type.
As stated, be retainer member 15a etc. through possessing the roller guide member, in rolling bearing 11, retainer member 15a etc. stably is configured in radially.Therefore, the aperture surface 17 of the end face 27 of the radial outside of the 22a～22d of post portion among the retainer member 15a and the outer ring that is positioned at outside diameter 12 contact or the generation that contacts the abnormal sound that causes of the outer diametric plane 18 of the end face 28 of the radially inner side of the 22a～22d of post portion and the inner ring that is positioned at internal side diameter 13 can be suppressed.In addition, thereupon, retainer member 15a also reduces because of contact damaged misgivings with outer ring 12 grades.
Have, here, retainer member 15a has 3 the 1st and the 2nd pocket of accommodating roller again, has the pocket that adds up to more than 4 but also may be prescribed as.Fig. 4 A and Fig. 4 B have 2 the 1st pocket and the 2nd pocket respectively, add up to the sectional view of the retainer member with 4 pocket.At first; With reference to Fig. 4 A, retainer member 31 has for forming the 32a of post portion that 2 the 1st pocket 33a, 33c and 2 the 2nd pocket 33b, 33d axially extend, 32b, 32c, 32d, 32e and for linking the linking department (not shown) that a plurality of post 32a of portion, 32b, 32c, 32d, 32e extend in the contour direction.At the outside diameter of the 32a of post portion of the contour direction both sides that are positioned at the 1st pocket 33a, 33c, 32b, 32c, 32d, be provided with and be used for limiting the roller that remains on the 1st pocket 33a, 33c outside diameter roller retainer 34a, 34b, 34c, 34d to the external diameter side shifting.In addition; At the internal side diameter of the 32b of post portion of the contour direction both sides that are positioned at the 2nd pocket 33b, 33d, 32c, 32d, 32e, be provided with and be used for limiting the roller that remains on the 2nd pocket 33b, 33d internal side diameter roller retainer 35a, 35b, 35c, 35d to the internal diameter side shifting.
Through formation like this; With last outside diameter roller retainer 34a, 34b, 34c, the 34d of 2 the 1st pocket 33a, the 32a of post portion of 33c, 32b, 32c, 32d that is located at the not adjacency among 4 the 1st and the 2nd pocket 33a, 33b, 33c, the 33d; Restriction retainer member 31 moving to internal side diameter; With being located at not last internal side diameter roller retainer 35a, 35b, 35c, the 35d of 2 the 2nd pocket 33b, the 32b of post portion of 33d, 32c, 32d, 32e of adjacency, restriction retainer member 31 moving to outside diameter.Therefore, through alternately with the restriction of 2 the 1st and the 2nd pocket to the moving of outside diameter and internal side diameter, can more stably dispose retainer member 31, in rolling bearing, retainer member 31 reduces with respect to the misgivings that PCD tilts more simultaneously.
In addition; Shown in Fig. 4 B; Retainer member 36 has 2 the 1st pocket 37a, 33d and 2 the 2nd pocket 37b, 37c; The available last internal side diameter roller retainer of the 38b of post portion, 38c, 38d that is located at the contour direction both sides of 2 the 1st pocket 37b being positioned at adjacency, 37c; Restriction is moved to outside diameter, also can be with the last outside diameter roller retainer of the 38a of post portion, 38c, 38d, 38e of the contour direction both sides of the 1st pocket 37a that is located at the both end sides that is positioned at retainer member 36,33d, and restriction is moved to internal side diameter.In this case, since can enough 2 the restriction of the 1st and 2 the 2nd pocket to the moving of outside diameter and internal side diameter, therefore; With above-mentioned same; Can more stably dispose retainer member 36, in rolling bearing, retainer member 36 reduces with respect to the misgivings that PCD tilts more simultaneously.
Have again, in the above-described embodiment,, also can adopt the cylinder roller of cylinder shape or the conical roller that slowly strengthens towards axial footpath as the roller that is housed in the retainer member.Adopting under the situation of conical roller, the interval of the wall of in the retainer member and post portion conical roller butt also can slowly increase towards side end face, big footpath from the path side end face of conical roller.
Then, with reference to Fig. 5～Fig. 7, to the rolling bearing of another mode of execution again of the present invention, and the retainer member describe.Fig. 5 is the diagram of the rolling bearing of expression another mode of execution again of the present invention, and Fig. 6 is a diagram of seeing the retainer member shown in Fig. 5 from the arrow C direction, and Fig. 7 is the sectional view of the D-D section of Fig. 5.
With reference to Fig. 5, rolling bearing is to possess inner ring 62, outer ring (not shown), be configured in a plurality of conical roller 63 between inner ring 62 and the outer ring and have the conical rolling bearing 61 of the retainer 64 of the pocket that is used to accommodate a plurality of conical rollers 63.This retainer 64 is divided into a plurality of retainer member 64a through the cutting lines that axially extends ...
Fig. 6 is the enlarged view of retainer member 64a.With reference to Fig. 6, retainer member 64a has a pair of ring part 65a, 65b and is configured between a pair of ring part 65a, the 65b, for the pocket that is formed for accommodating conical roller 63 to axially extended a plurality of post portion 66.In mode of execution shown in Figure 6, form 3 pocket through 4 post portions 66, in each pocket, contain 1 each and every one conical roller 63.Have, the formation of other retainer member is identical with retainer member 64a again, and therefore explanation is omitted.
Fig. 7 is the sectional view of the D-D section of Fig. 5, be expression post portion 66 shape be coated with the scholar.Have, in order to simplify, the diagram of inner ring 62 and ring part 65a is omitted again.With reference to Fig. 7, the end face that forms the pocket of post portion 66 is the curve form along the rotation surface of conical roller 63, is provided with at its inside diameter to be used to limit the roller retainer 66a of conical roller 63 to the internal diameter side shifting.In addition, as shown in Figure 6, the width dimensions of post portion 66 strengthens from ring part 65b side towards ring part 65a side, and pocket forms along the trapezoidal shape of the profile of conical roller 63.
Be assembled in 61 last times of conical rolling bearing at the retainer member 64a with above-mentioned formation, inner ring abutting part 68a is connected on the big flange 62a of inner ring 62, and inner ring abutting part 68b is connected on the little flange 62b of inner ring 62.Therefore, when retainer member 64a was in the position in court sky, inner ring abutting part 68a, 68b contacted with lip part 62a, 62b, and retainer member 64a becomes inner ring flange guide member.
On the other hand, when retainer member 64a is in the position on court ground, through moving of roller retainer 66a restriction retainer member 64a downward direction.Therefore, the retainer member 64a of this moment becomes the roller guide member.
Like this; Through limit retainer member 64a moving with inner ring lip part 62a, 62b to radially inner side; Through with 63 restrictions of conical roller to the moving of radial outside, can suppress retainer member 64a contacts generation or the retainer member 64a etc. of the abnormal sound that causes with inner ring 62 and outer ring breakage.In addition, owing to do not worry that retainer member 64a scrapes the oil film of getting the Internal and external cycle plane of trajectory orbital, therefore can obtain the good rolling bearing of greasy property.
Have again, in the above-described embodiment, illustration butt joint end face 67 from the outstanding example of the post portion of right ends 66, but also be not limited to this, for example, also can form butt joint end face 67 not from the outstanding shape of the post portion at two ends 66.But, when being post portion 66 contacting structure of each retainer member of adjacency, because 66 distortion of post portion or damaged misgivings are arranged when bearing rotate, so be preferably formed as the post portion 66 mutual discontiguous structures of the retainer member of adjacency.
In addition, in the above-described embodiment, illustration between the retainer member of adjacency, do not accommodate the example of conical roller 63; But also be not limited to this; For example, the docking part that also can be formed on the retainer member of adjacency forms pocket, accommodates the formation of conical roller 63.Thus, the load capacity of conical rolling bearing 61 increases.
In addition,, can form, also can select arbitrarily to be housed in the roller radical in each retainer member through the retainer member that makes up the arbitrary number more than 2 about retainer 64.In addition, when having made up all retainer members,, also can between the retainer member, dispose the liner that is used for the adjusting play for landfill is formed at the contour direction gap between the retainer member.
In addition, in the above-described embodiment, illustration adopt the example of the single-row conical rolling bearing 61 of conical roller 63 as roller, but the present invention also can be the conical rolling bearing of multiple row.In addition, also be applicable to the automatic self aligning roller bearing that adopts spherical roller, all rolling bearings such as cylindrical roller bearing that adopt cylinder roller.
Fig. 8 and Fig. 9 represent to adopt as main shaft supporting bearing 45 a routine wind driven generator principal shaft supporting structure of above-mentioned rolling bearing.The shell 43 of the gondola 42 of the critical piece of supporting spindle supporting structure, is arranged on the supporting station 40 by horizontal rotation via panoramatic head bearing 41 in a high position freely.With the blade of the accepting wind-force 47 fixing main shafts of at one end going up 46; In the shell 43 of gondola 42; Be rotated freely via the main shaft supporting bearings 45 in the bearing housing 44 of packing into and supporting, the other end of main shaft 46 is connected with speed increaser 48, and the output shaft of speed increaser 48 combines with the rotor shaft of generator 49.Gondola 42 can be through revolution with motor 50, via retarder 51 with angle rotary arbitrarily.
The main shaft supporting bearing 45 that is assembled in the bearing housing 44 is rolling bearings of a mode of execution of the present invention, possesses a plurality of rollers and the retainer that is used to keep a plurality of rollers.Above-mentioned retainer is through being divided into a plurality of retainer members towards the cutting lines that axially extends.Each retainer member has a plurality of post portions of axially extending and forming the 1st and the 2nd pocket of accommodating roller and for linking the linking department that this a plurality of post portion extends in the contour direction.Post portion has and is used to limit the roller that is housed in the 1st pocket to the outside diameter roller retainer of external diameter side shifting be used to limit the roller that is housed in the 2nd pocket internal side diameter roller retainer to the internal diameter side shifting.
Main shaft supporting bearing 45 supportings one end is fixed with the main shaft 46 of the blade 47 of accepting big wind-force, therefore bears big load.So, main shaft supporting bearing 45 itself also needs to maximize.Owing to the rolling bearing that has alienable retainer member through formation, producibility, operability, the assembling performance of retainer are improved, so the producibility of rolling bearing itself also improve here.In addition, because above-mentioned retainer member is the roller guide member, and stably is configured in radially, therefore with minimizings that contact of outer ring or inner ring etc., can suppress to follow the generation of the abnormal sound of contact, the misgivings that contact the breakage that causes simultaneously also reduce.
In addition, as the main shaft supporting bearing 45 that is assembled in the bearing housing 44, also can adopt the rolling bearing of the another embodiment of the invention of Fig. 5 for example～shown in Figure 7.
Main shaft supporting bearing 45 supportings one end is fixed with the main shaft 46 of the blade 47 of accepting big wind-force, therefore bears big load.So, main shaft supporting bearing 45 itself also needs to maximize.Owing to the rolling bearing that has alienable retainer member through formation, producibility, operability, the assembling performance of retainer are improved, so the producibility of rolling bearing itself also improve here.
In addition; Rolling bearing as above-mentioned formation; Owing to can prevent to follow the generation of the abnormal sound that the retainer member contacts with Internal and external cycle or the breakage of retainer member, improve the greasy property of conical rolling bearing simultaneously, so can obtain the high wind driven generator principal shaft supporting structure of reliability.
In addition, in the above-described embodiment, the end of the contour direction of retainer member is cut apart so that become post portion, but also is not limited to this, also can cut apart at linking department.In such cases, the retainer member can be connected with the retainer member of adjacency at linking department.
Have again, even in that such rolling bearing with retainer member 15a etc. is formed under the large-scale situation, because miniaturizations such as retainer member 15a; And simple shape; Therefore through its material is defined as resin system,, can be easy to produce with manufacturings such as injection mouldings.Through formation like this, can improve and make producibility.
In addition, in the above-described embodiment, contained linking department 21a, 21b and ring part 65a among the retainer member 15a etc., 65b constitute with the mode of the curvature that has regulation in advance.But; Also can constitute linking department 21a, 21b and ring part 65a, 65b with parts with flexual resin etc.; Make it have elasticity in the contour direction; Form the straight shape of the curvature that does not have regulation during fabrication, in the time of on being assembled in rolling bearing, also can make its ground of curvature with regulation assembling.Through formation like this, during fabrication, can retainer member 15a etc. be formed simpler shape, make producibility etc. better.
More than, with reference to description of drawings mode of execution of the present invention, but the present invention is not limited to illustrated mode of execution.For illustrated mode of execution, can be in the scope identical with the present invention, or in the impartial scope, implement multiple correction or distortion.
Retainer member of the present invention can stably be configured in the rolling bearing, and contacting of rolling bearing of the present invention and retainer member and outer ring etc. is few, therefore can be used for retainer member and the rolling bearing that requirement suppresses abnormal sound effectively.
In addition, wind driven generator principal shaft supporting structure of the present invention owing to comprise the rolling bearing of the retainer member that can stably dispose Splittable, therefore can be effectively applied to require large-scale, as to suppress abnormal sound purposes.
Retainer member of the present invention can be advantageously used in the large-scale rolling bearings such as bearing of supporting wind power generation machine main shaft.
Claims (7)
1. the main shaft supporting of a wind-driven generator is used rolling bearing, possesses a plurality of rollers and the retainer that keeps said a plurality of rollers, and the main shaft that an end is fixed with the blade of accepting wind-force supports, wherein,
Said retainer is divided into a plurality of retainer members by the cutting lines that axially extends,
Each said retainer member has a plurality of post portions of axially extending and forming the 1st and the 2nd pocket of accommodating roller and extends and link the linking department of this a plurality of post portion in the contour direction,
Said post portion has outside diameter roller retainer and internal side diameter roller retainer; Said outside diameter roller retainer blocks at the roller that outside diameter is accommodated in said the 1st pocket; Restriction retainer member moving to internal side diameter; Said internal side diameter roller retainer blocks at the roller that internal side diameter is accommodated in said the 2nd pocket, restriction retainer member moving to outside diameter
Said retainer member is the roller guide member.
2. the main shaft supporting of wind-driven generator as claimed in claim 1 is used rolling bearing, and wherein, the post portion between said the 1st pocket and said the 2nd pocket has said outside diameter roller retainer and said internal side diameter roller retainer.
3. the main shaft supporting of wind-driven generator as claimed in claim 1 is used rolling bearing, and wherein, said retainer member has 3 pocket at least.
4. the main shaft supporting of wind-driven generator as claimed in claim 1 is used rolling bearing, and wherein, said retainer member is resinous.
5. the main shaft supporting of wind-driven generator as claimed in claim 1 is used rolling bearing, and wherein, said roller is conical roller.
6. retainer member keeps a plurality of rollers and is cut apart by the cutting lines that axially extends, and be used in an end is fixed with the wind-driven generator that the main shaft of the blade of accepting wind-force supports main shaft supporting with in the rolling bearing, wherein,
Said retainer member has a plurality of post portions of axially extending and forming the 1st and the 2nd pocket of accommodating roller and extends and link the linking department of this a plurality of post portion in the contour direction,
Said post portion has outside diameter roller retainer and internal side diameter roller retainer; Said outside diameter roller retainer blocks at the roller that outside diameter is accommodated in said the 1st pocket; Restriction retainer member moving to internal side diameter; Said internal side diameter roller retainer blocks at the roller that internal side diameter is accommodated in said the 2nd pocket, restriction retainer member moving to outside diameter
Said retainer member is the roller guide member.
7. wind driven generator principal shaft supporting structure; The main shaft that has that blade, an end of accepting wind-force are fixed on the said blade and together rotate with blade and be loaded in the fixed component and main shaft supporting that the wind-driven generator of said main shaft is supported in rotation is freely used rolling bearing; Wherein
The main shaft supporting of said wind-driven generator possesses a plurality of rollers and the retainer that keeps said a plurality of rollers with rolling bearing,
Said retainer is divided into a plurality of retainer members by the cutting lines that axially extends,
Each said retainer member has a plurality of post portions of axially extending and forming the 1st and the 2nd pocket of accommodating roller and extends and link the linking department of this a plurality of post portion in the contour direction,
Said post portion has outside diameter roller retainer and internal side diameter roller retainer; Said outside diameter roller retainer blocks at the roller that outside diameter is accommodated in said the 1st pocket; Restriction retainer member moving to internal side diameter; Said internal side diameter roller retainer blocks at the roller that internal side diameter is accommodated in said the 2nd pocket, restriction retainer member moving to outside diameter
Said retainer member is the roller guide member.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005368588A JP4342512B2 (en) | 2005-12-21 | 2005-12-21 | Rolling bearings, cage segments, and main shaft support structure for wind power generators |
| JP368588/2005 | 2005-12-21 | ||
| JP2006030088A JP2007211833A (en) | 2006-02-07 | 2006-02-07 | Rolling bearing, retainer segment, and structure for supporting main shaft of wind power generator |
| JP030088/2006 | 2006-02-07 | ||
| PCT/JP2006/322266 WO2007072637A1 (en) | 2005-12-21 | 2006-11-08 | Rolling bearing, retainer segment, and main shaft support structure for wind-driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101341349A CN101341349A (en) | 2009-01-07 |
| CN101341349B true CN101341349B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800478464A Active CN101341349B (en) | 2005-12-21 | 2006-11-08 | Rolling bearing, retainer segment, and main shaft support structure for wind-driven generator |
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| JP (1) | JP4342512B2 (en) |
| CN (1) | CN101341349B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9039288B2 (en) * | 2008-07-08 | 2015-05-26 | Nsk Ltd. | Tapered roller bearing resin cage and tapered roller bearing |
| DE102010028581A1 (en) * | 2010-05-05 | 2011-11-10 | Robert Bosch Gmbh | eccentric |
| JP2012077882A (en) * | 2010-10-05 | 2012-04-19 | Jtekt Corp | Roller bearing cage and roller bearing |
| DE102011087864A1 (en) * | 2010-12-07 | 2012-09-06 | Aktiebolaget Skf | Cage segment of a tapered roller bearing and tapered roller bearing |
| DE102012207529A1 (en) * | 2012-05-07 | 2013-11-07 | Aktiebolaget Skf | Cage segment of a tapered roller bearing and tapered roller bearing |
| JP2014139474A (en) * | 2012-12-21 | 2014-07-31 | Nsk Ltd | Rolling bearing |
| DK2984357T3 (en) * | 2013-04-11 | 2019-11-11 | Skf Ab | ROLLING BASE WITH ROLLING BODIES LOCATED IN MULTIPLE CURRENCY SEGMENTS |
| JP2015034578A (en) * | 2013-08-08 | 2015-02-19 | 株式会社ジェイテクト | Tapered roller bearing |
| EP3000797B1 (en) | 2014-09-24 | 2019-11-27 | Rolls-Royce Corporation | Method for making ceramic matrix composite articles using gelling |
| JP7141835B2 (en) * | 2018-03-05 | 2022-09-26 | Ntn株式会社 | Roller bearings and retainers for roller bearings |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1408248A2 (en) * | 2002-10-08 | 2004-04-14 | Ab Skf | Roller bearing cage |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1408248A2 (en) * | 2002-10-08 | 2004-04-14 | Ab Skf | Roller bearing cage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101341349A (en) | 2009-01-07 |
| JP4342512B2 (en) | 2009-10-14 |
| JP2007170538A (en) | 2007-07-05 |
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