CN112443572A - Super-huge tapered roller turntable bearing with detachable small flange - Google Patents
Super-huge tapered roller turntable bearing with detachable small flange Download PDFInfo
- Publication number
- CN112443572A CN112443572A CN202011400196.5A CN202011400196A CN112443572A CN 112443572 A CN112443572 A CN 112443572A CN 202011400196 A CN202011400196 A CN 202011400196A CN 112443572 A CN112443572 A CN 112443572A
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- China
- Prior art keywords
- inner ring
- retainer
- ring
- bearing
- small flange
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses an oversize tapered roller turntable bearing with a detachable small flange, which comprises an outer ring, an inner ring, rolling bodies and a retainer, wherein the outer ring and the inner ring are coaxially arranged, a plurality of rolling bodies uniformly distributed around the center of the inner ring are arranged between the outer ring and the inner ring, the retainer is positioned at a position between the outer ring and the inner ring, a plurality of pockets uniformly distributed around the center of the inner ring are formed in the retainer, and the rolling bodies are correspondingly arranged at the pockets; the bearing comprises a bearing body, a bearing inner ring, a first inner ring, a second inner ring, a bolt, a first inner ring and a second inner ring, wherein the first inner ring and the second inner ring are connected through the bolt.
Description
Technical Field
The invention belongs to the technical field of wind power turntable bearing design, and particularly relates to an oversize tapered roller turntable bearing with a detachable small flange.
Background
The turntable bearing is a large bearing which can bear the comprehensive loads such as a large axial load, a large radial load, a large overturning moment and the like at the same time and has a special structure integrating multiple functions such as supporting, rotating, transmission, fixing and the like, and generally comprises four parts such as an inner ring, an outer ring, a rolling body, a retainer and the like. The core component adopts the slewing bearing, so that the core component can simultaneously bear axial force and radial force. The forms are many, but the structural compositions are basically the same and different.
At present, a retainer of a tapered roller bearing is generally a basket-shaped retainer, is formed by punching a steel plate, is punched to form a window hole, is expanded, is filled with a tapered roller into the window hole of the retainer to form a retainer and a roller assembly, is filled with a bearing inner ring into the roller assembly of the retainer to form the retainer, the roller and the bearing inner ring assembly, and is placed into a special die to shrink a cross beam of the retainer so as to restore the retainer; the production method and the installation method of the retainer are suitable for some medium and small tapered roller bearings, but for some oversize tapered roller turntable bearings, especially tapered roller turntable bearings with the diameter of more than 2m, the production and the installation of the retainer have limitations, firstly, because of the retainer formed by stamping, when a rolling element is assembled, a pocket hole of the retainer needs to be expanded, a plurality of tapered rollers are sequentially arranged in the pocket hole of the retainer to form the retainer and a roller assembly, then a bearing inner ring is arranged in the assembly formed by the retainer and the rollers, and then the expanded retainer is contracted to complete the whole assembly, but the problem of uneven contraction of the retainer at each part can occur in the expanding and contracting process, the size precision of the retainer can not meet the use requirement of the oversize tapered roller turntable bearing, and the service life of the bearing is easily reduced, secondly, because the holder size is too big, there is not suitable punching machine and mould to process the production to the holder, the production degree of difficulty is higher, consequently, adopt machining's mode to produce the holder, adopt the lathe to turn the appearance of holder in place earlier, processing the pocket hole afterwards, however, the holder wall thickness that adopts the processing of turning mode to come out is thicker, can not expand and shrink, during follow-up bearing assembly, when the subassembly of holder and roller was packed into to the inner circle, because the little flange protrusion of inner circle can't assemble, consequently, an urgent need for a very big tapered roller carousel bearing that can disassemble little flange to solve above-mentioned problem.
Disclosure of Invention
The invention aims to solve the technical problems and provides the oversize tapered roller turntable bearing with the detachable small flange, the structural design is simple and reasonable, the use is convenient, the inner ring of the bearing is designed into a detachable structure, the traditional operation mode of expanding and contracting the retainer is replaced when the retainer and the rolling body are installed, the deformation of the retainer is avoided, the size precision of the retainer is improved, and the assembly of the bearing and the prolonging of the service life are facilitated.
The technical scheme adopted by the invention is as follows: a super-huge tapered roller turntable bearing with a detachable small flange comprises an outer ring, an inner ring, rolling bodies and a retainer, wherein the outer ring and the inner ring are coaxially arranged, a plurality of rolling bodies uniformly distributed around the center of the inner ring are arranged between the outer ring and the inner ring, the retainer is positioned between the outer ring and the inner ring, a plurality of pockets uniformly distributed around the center of the inner ring are formed in the retainer, and the rolling bodies are correspondingly arranged at the pockets; the inner ring comprises a first inner ring and a second inner ring, the first inner ring and the second inner ring are connected through bolts, a small flange which is obliquely arranged is arranged at the outer diameter position below the first inner ring, and a large flange which is combined with the small flange and plays an axial limiting role in the rolling body is arranged at the outer diameter position of the second outer ring.
The rolling bodies are tapered rollers.
The outer diameter of the first inner ring is larger than the minimum outer diameter of the second inner ring, and after the first inner ring and the second inner ring are connected through the bolt, the small flange and the large flange are arranged in parallel on the cross section.
Bolt mounting holes are formed in the first inner ring and the second inner ring.
The cage is characterized in that the pocket formed on the cage is a conical hole, and the outer diameter of the rolling body is tangent to two side edges of the conical pocket.
When the super-huge tapered roller turntable bearing with the detachable small flange is assembled: the original punch forming retainer is replaced by the retainer which is formed by machining and turning, and the turning machining can improve the machining precision of the retainer compared with the punch forming, so that the turning machining has the advantages of meeting the size precision, preventing the retainer from deforming and prolonging the service life of the bearing for the retainer for the super-large turntable bearing; in addition, because the retainer formed by turning cannot expand and contract, the traditional method for installing the rolling body and the retainer between the inner ring and the outer ring of the bearing is not applicable, therefore, during assembly, the traditional inner ring is split into the first inner ring and the second inner ring, the interference of the small flange position of the inner ring on the assembly of the retainer during assembly is avoided, during the specific assembly process, a mold with the same size with the outer ring is designed, circular grooves for placing the rolling body are arranged on the surface of the mold, the number of the circular grooves is equal to that of the rolling body, the circular grooves are uniformly distributed around the center of the mold, the circular grooves are of an inclined structure, steps are arranged at the lower end of the circular grooves of the inclined structure to avoid the falling problem during the placement of the rolling body, during the placement process, the retainer is firstly placed on the mold, then the rolling body is placed at the pocket position of the retainer and is positioned at the circular, after the rolling body and the retainer are assembled, the rolling body and the retainer are integrally placed at the outer diameter of the second inner ring, the lower end face of the rolling body is in contact with the large flange, the first inner ring and the second inner ring are connected through the bolt, and finally the outer ring is assembled again, so that the whole assembly process is realized.
The inner ring comprises a first inner ring and a second inner ring, the first inner ring and the second inner ring are connected through a bolt, a small flange which is obliquely arranged is arranged at the outer diameter position below the first inner ring, and a large flange which is combined with the small flange and plays an axial limiting role on the rolling body is arranged at the outer diameter position of the second outer ring; the purpose of this is: the oversize turntable bearing is oversized, and the diameter of the oversize turntable bearing usually exceeds 2m, so that the traditional method for stamping and forming the retainer is not applicable, firstly, a stamping machine and a die corresponding to the size of the retainer are not available, secondly, the dimensional precision of the stamped retainer cannot meet the use requirement of the bearing, thirdly, when the pocket shrinkage processing is carried out, the bearing is not high in installation precision due to uneven stamping, and the service life of the bearing is easy to reduce; in summary, the retainer is changed from the traditional punch forming mode to the mechanical processing and turning forming mode, which can not only facilitate the processing operation, but also meet the use precision requirement of the bearing, and the retainer formed by turning can not expand and contract in the assembling process, so that the assembling problem occurs, which causes the problem that the traditional bearing inner ring interferes with the retainer, therefore, the traditional inner ring is designed into the mode of assembling the first inner ring and the second inner ring, namely, the root of the small flange is intercepted to form the first inner ring, the dimension of the inner ring above the small flange can be prevented from interfering the installation of the rolling body during the assembling, thus not only the installation precision of the bearing can not be influenced, but also the installation can be completed under the condition of not expanding and contracting the retainer, the assembly requirement is met, and the purpose of smoothly installing the turntable bearing assembled by the retainer with higher precision is realized, the structural design requirements of the super-huge type turntable bearing on high precision, long service life and high reliability are met, and the problem of assembling the basket type retainer with high precision is solved.
The invention has the beneficial effects that:
the bearing inner ring is designed into a detachable structure, so that the traditional assembly operation mode of heating the retainer and extruding the retainer is replaced when the retainer and the rolling body are installed, the deformation of the retainer is avoided, the size precision of the retainer is improved, and the bearing inner ring is convenient to assemble and prolong the service life.
Drawings
FIG. 1 is an overall cross-sectional schematic view of a slewing bearing of the present invention;
FIG. 2 is a cross-sectional view of the inner race of the present invention;
FIG. 3 is a schematic view of the assembly of the rolling elements and the cage according to the present invention;
FIG. 4 is a schematic structural view of the cage of the present invention;
FIG. 5 is a schematic view of the rolling element and cage assembly of the present invention during installation.
The labels in the figure are: 1. an outer ring; 2. a holder; 3. a rolling body; 4. a bolt mounting hole; 5. a first inner race; 6. a second inner race; 7. a large flange; 8. a small flange; 9. a pocket hole; 10. a mold; 11. a circular groove; 12. and (4) a step.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings.
As shown in the figure, the oversize tapered roller turntable bearing with the detachable small flange comprises an outer ring 1, an inner ring, rolling bodies 3 and a retainer 2, wherein the outer ring 1 and the inner ring are coaxially arranged, a plurality of rolling bodies 3 uniformly distributed around the center of the inner ring are arranged between the outer ring 1 and the inner ring, the retainer 2 is positioned between the outer ring 1 and the inner ring, a plurality of pockets 9 uniformly distributed around the center of the inner ring are formed in the retainer 2, and the rolling bodies 3 are correspondingly arranged at the pockets 9; the inner ring comprises a first inner ring 5 and a second inner ring 6, the first inner ring 5 and the second inner ring 6 are connected through bolts, a small rib 8 which is obliquely arranged is arranged at the outer diameter position below the first inner ring 5, and a large rib 7 which is combined with the small rib 8 and has an axial limiting effect on the rolling body 3 is arranged at the outer diameter position of the second outer ring 1.
The rolling bodies 3 are tapered rollers.
The outer diameter of the first inner ring 5 is larger than the minimum outer diameter of the second inner ring 6, the small rib 8 and the large rib 7 are arranged in parallel on the cross section after the first inner ring 5 and the second inner ring 6 are connected through bolts, and the arrangement is that the small rib 8 at the bottom of the first inner ring 5 is matched with the large rib 7 of the second inner ring 6 to axially limit the rolling body 3, so that the rolling body 3 rolls between the inner ring and the outer ring 1.
The cage 2 is provided with a pocket 9 which is a tapered hole, the outer diameter of the rolling body 3 and two sides of the tapered pocket 9 are arranged in a tangent mode, the cage 2 is machined in a numerical control machining center, the size precision of the pocket 9 can be strictly limited, the rolling body 3 can be tangent to the two sides of the pocket 9 after being installed in the pocket 9 of the cage 2 and after being assembled between an inner ring and an outer ring 1 after being installed in the pocket 9 of the cage 2, gaps of 0.1mm are formed in two sides of the rolling body 3, high-precision operation of the rolling body 3 is facilitated, the arrangement of the tangency is to avoid clamping stagnation between the rolling body 3 and the cage 2, and the gap is set to be 0.1mm to enable the whole turntable bearing to have higher operation efficiency and longer service life.
When the super-huge tapered roller turntable bearing with the detachable small flange is assembled: the original punch forming retainer 2 is replaced by the retainer 2 which is formed by machining and turning, and the turning is compared with the punch forming, so that the machining precision of the retainer 2 can be improved, and the turning has the advantages of meeting the size precision, preventing the retainer 2 from deforming and prolonging the service life of the bearing for the retainer 2 for the super-large turntable bearing; in addition, because the retainer 2 formed by turning cannot expand and contract, the traditional method for installing the rolling elements 3 and the retainer 2 between the inner ring and the outer ring 1 of the bearing is not applicable, therefore, during assembly, the traditional inner ring is split into the first inner ring 5 and the second inner ring 6, the interference of the small flange 8 position of the inner ring on the assembly of the retainer 2 is avoided, during the specific assembly process, a mould 10 with the same size with the outer ring 1 is designed, circular grooves 11 for placing the rolling elements 3 are arranged on the surface of the mould 10, the number of the circular grooves 11 is equal to that of the rolling elements 3, the circular grooves 11 are uniformly distributed around the center of the mould 10, the circular grooves 11 are of an inclined structure, steps 12 are arranged at the lower end of the circular grooves 11 of the inclined structure, so as to avoid the falling problem in the placing process of the rolling elements 3, during the placing process, the retainer 2 is firstly placed on the mould 10, then the rolling elements 3 are placed at the position of, and the rolling body 3 and the retainer 2 are integrally placed at the outer diameter of the second inner ring 6 after the assembly of the rolling body 3 and the retainer 2 is completed, the lower end face of the rolling body 3 is contacted with the large flange 7, the first inner ring 5 and the second inner ring 6 are connected through bolts, and finally the outer ring 1 is assembled with the outer ring 1, so that the whole assembly process is realized.
Claims (5)
1. The utility model provides a can disassemble super-huge tapered roller carousel bearing of little flange which characterized in that: the rolling bearing comprises an outer ring, an inner ring, rolling bodies and a retainer, wherein the outer ring and the inner ring are coaxially arranged, a plurality of rolling bodies uniformly distributed around the center of the inner ring are arranged between the outer ring and the inner ring, the retainer is positioned between the outer ring and the inner ring, a plurality of pockets uniformly distributed around the center of the inner ring are formed in the retainer, and the rolling bodies are correspondingly arranged at the pockets; the inner ring comprises a first inner ring and a second inner ring, the first inner ring and the second inner ring are connected through bolts, a small flange which is obliquely arranged is arranged at the outer diameter position below the first inner ring, and a large flange which is combined with the small flange and plays an axial limiting role in the rolling body is arranged at the outer diameter position of the second outer ring.
2. The oversize tapered roller slewing bearing with the detachable small flange according to claim 1, characterized in that: the rolling bodies are tapered rollers.
3. The oversize tapered roller slewing bearing with the detachable small flange according to claim 1, characterized in that: the outer diameter of the first inner ring is larger than the minimum outer diameter of the second inner ring, and after the first inner ring and the second inner ring are connected through the bolt, the small flange and the large flange are arranged in parallel on the cross section.
4. The oversize tapered roller slewing bearing with the detachable small flange according to claim 1, characterized in that: bolt mounting holes are formed in the first inner ring and the second inner ring.
5. The oversize tapered roller slewing bearing with the detachable small flange according to claim 1, characterized in that: the pocket that sets up on the holder is the bell mouth, and the external diameter of rolling element and two sides in toper pocket are tangent setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011400196.5A CN112443572A (en) | 2020-12-04 | 2020-12-04 | Super-huge tapered roller turntable bearing with detachable small flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011400196.5A CN112443572A (en) | 2020-12-04 | 2020-12-04 | Super-huge tapered roller turntable bearing with detachable small flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112443572A true CN112443572A (en) | 2021-03-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011400196.5A Pending CN112443572A (en) | 2020-12-04 | 2020-12-04 | Super-huge tapered roller turntable bearing with detachable small flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112443572A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464401B1 (en) * | 2001-01-26 | 2002-10-15 | United Technologies Corporation | High load capacity bi-directional tapered roller bearing |
| JP2006207731A (en) * | 2005-01-28 | 2006-08-10 | Nsk Ltd | Roller bearing |
| JP2013015200A (en) * | 2011-07-05 | 2013-01-24 | Jtekt Corp | Conical roller bearing |
| WO2015129709A1 (en) * | 2014-02-25 | 2015-09-03 | Ntn株式会社 | Tapered roller bearing |
| CN105587770A (en) * | 2016-03-07 | 2016-05-18 | 洛阳轴研科技股份有限公司 | Roller-guiding cylindrical roller bearing retainer and machining method thereof |
| CN109899387A (en) * | 2019-03-26 | 2019-06-18 | 洛阳新强联回转支承股份有限公司 | A kind of three-row cylinder roller pitch variable bearings of roller guide retainer |
| CN110345163A (en) * | 2019-07-10 | 2019-10-18 | 无锡诚石轴承有限公司 | Special miniature webcam goes up and down special bearing structure |
| CN210196273U (en) * | 2019-06-20 | 2020-03-27 | 山东金帝精密机械科技股份有限公司 | Expansion-free tapered roller bearing retainer and tapered roller bearing |
| CN111133210A (en) * | 2017-09-28 | 2020-05-08 | Ntn株式会社 | Retainer for tapered roller bearing and tapered roller bearing |
| CN111894973A (en) * | 2020-08-10 | 2020-11-06 | 洛阳Lyc轴承有限公司 | Double-row tapered roller bearing with copper retainer structure |
| CN213776068U (en) * | 2020-12-04 | 2021-07-23 | 洛阳新强联回转支承股份有限公司 | Super-huge tapered roller turntable bearing with detachable small flange |
-
2020
- 2020-12-04 CN CN202011400196.5A patent/CN112443572A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464401B1 (en) * | 2001-01-26 | 2002-10-15 | United Technologies Corporation | High load capacity bi-directional tapered roller bearing |
| JP2006207731A (en) * | 2005-01-28 | 2006-08-10 | Nsk Ltd | Roller bearing |
| JP2013015200A (en) * | 2011-07-05 | 2013-01-24 | Jtekt Corp | Conical roller bearing |
| WO2015129709A1 (en) * | 2014-02-25 | 2015-09-03 | Ntn株式会社 | Tapered roller bearing |
| CN105587770A (en) * | 2016-03-07 | 2016-05-18 | 洛阳轴研科技股份有限公司 | Roller-guiding cylindrical roller bearing retainer and machining method thereof |
| CN111133210A (en) * | 2017-09-28 | 2020-05-08 | Ntn株式会社 | Retainer for tapered roller bearing and tapered roller bearing |
| CN109899387A (en) * | 2019-03-26 | 2019-06-18 | 洛阳新强联回转支承股份有限公司 | A kind of three-row cylinder roller pitch variable bearings of roller guide retainer |
| CN210196273U (en) * | 2019-06-20 | 2020-03-27 | 山东金帝精密机械科技股份有限公司 | Expansion-free tapered roller bearing retainer and tapered roller bearing |
| CN110345163A (en) * | 2019-07-10 | 2019-10-18 | 无锡诚石轴承有限公司 | Special miniature webcam goes up and down special bearing structure |
| CN111894973A (en) * | 2020-08-10 | 2020-11-06 | 洛阳Lyc轴承有限公司 | Double-row tapered roller bearing with copper retainer structure |
| CN213776068U (en) * | 2020-12-04 | 2021-07-23 | 洛阳新强联回转支承股份有限公司 | Super-huge tapered roller turntable bearing with detachable small flange |
Non-Patent Citations (1)
| Title |
|---|
| 洛阳轴承研究所、洛阳轴承厂: "《滚动轴承生产》", 30 November 1979 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210305 |