CN104632883B - Three-row-roller type turntable bearing with axial pre-compression structure - Google Patents
Three-row-roller type turntable bearing with axial pre-compression structure Download PDFInfo
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- CN104632883B CN104632883B CN201510103527.1A CN201510103527A CN104632883B CN 104632883 B CN104632883 B CN 104632883B CN 201510103527 A CN201510103527 A CN 201510103527A CN 104632883 B CN104632883 B CN 104632883B
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- Prior art keywords
- ring
- roller
- inner ring
- turntable bearing
- dust
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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
- F16C19/38—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 two or more rows of rollers
- F16C19/381—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 two or more rows of rollers with at least one row for radial load in combination with at least one row for axial load
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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
- F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
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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
- F16C2322/00—Apparatus used in shaping articles
- F16C2322/39—General build up of machine tools, e.g. spindles, slides, actuators
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a three-row-roller type turntable bearing with an axial pre-compression structure. The three-row-roller type turntable bearing comprises an outer ring, an inner ring, a rolling body and a holding frame, wherein the inner ring comprises a first inner ring and a second inner ring; the first inner ring is located at the upper part of the inner ring, and the second inner ring is located at the lower part of the inner ring; the rolling body comprises a radial roller, a first thrust roller and a second thrust roller; an annular groove is formed in a roller path surface, in contact with the second thrust roller, of the second inner ring, a plurality of blind holes are uniformly formed in the annular groove along the bottom of the annular groove, and springs are mounted in the blind holes; a roller path plate capable of bearing the second thrust roller is embedded into the annular groove, a quench-hardened layer is arranged on the surface, in contact with the second thrust roller, of the roller path plate, and the lower end of the roller path plate is fixedly connected with the spring. According to the three-row-roller type turntable bearing, a structure capable of axially pre-compressing the thrust rollers is additionally arranged in the bearing, so that the end plays between the thrust rollers and the roller path surface of the three-row-roller type turntable bearing are eliminated, and the damage caused to the roller path surface when the bearing is in a vibration state for a long time is prevented.
Description
Technical field
The present invention relates to extra large size bearing technical field is and in particular to a kind of three-row roller turntable shaft with axial pretightening
Hold.
Background technology
At present, in heavy-duty machinery technical field, bearing is the core of this equipment, because it is except having supporting pole heavy load
Outside revolute function, still suffer from great tilting moment, to adapt to the transhipment of heavily loaded goods at a distance, three-row roller turntable bearing
Extensively apply because of its stronger bearing capacity with large lifting equipment in, three-row roller turntable bearing can bear larger simultaneously
The load such as axial load, radial load and tilting moment, because the working environment residing for large lifting equipment is all more severe, make
Three-row roller rotating disk can be in shake often in vibrating state due to there is clearance between thrust roller and roller surface for a long time
During dynamic state, easily roller surface is caused to damage.
Content of the invention
The purpose of the present invention is the deficiency for solving above-mentioned technical problem, provides a kind of three-row roller with axial pretightening
Turntable bearing, Bearing inner has the structure that thrust roller is carried out with axial pretightening, eliminates the thrust of three-row roller turntable bearing
Clearance between roller and roller surface, prevents bearing to be in vibrating state for a long time and leads to the damage to roller-way face for the roller.
The present invention is the deficiency solving above-mentioned technical problem, be the technical scheme is that a kind of with axial pretightening
Three-row roller turntable bearing, including outer ring, inner ring, rolling element and retainer, inner ring includes superposed first inner ring and position
In the second inner ring of bottom, rolling element includes radial roller, the first thrust roller and the second thrust roller, and described outer ring has one
Individual ring-shaped step, two annular table terraces of ring-shaped step respectively with superposed first inner ring and be located at bottom second in
Circle constitutes the first thrust roller raceway and the second thrust roller raceway, between described first inner ring and outer ring and the second inner ring and
It is provided with single lip sealing ring, it is recessed that the roller surface that described second inner ring is contacted with the second thrust roller has annular between outer ring
Groove, in annular groove, the bottom even along groove offers multiple blind holes, is provided with spring in blind hole, and described annular groove embeds
It is provided with the raceway plate that can carry the second thrust roller, the surface that raceway plate is contacted with the second thrust roller has quench-hardened case, raceway
The lower end of plate is fixedly connected with spring.
The installation of bearing for convenience, is fixedly connected one end in described raceway plate and is additionally provided with pretension bolt hole with spring,
Before installation, it is connected with raceway plate through the second inner ring by pretension bolt, by pretension bolt by raceway plate toward drop-down, makes bullet
Spring is in compressive state, and the roller surface of raceway plate and the second inner ring maintains an equal level, and then carries out the installation combination of bearing, and installation terminates
Afterwards, taking down pretension bolt makes spring be in compressive state all the time, and raceway plate is subject to the pretightning force of spring all the time.
Because the working environment of large lifting equipment is typically more severe, existing bearing only has single sealing structure,
Cannot be effectively in the face of the outside debris invasion such as bulky grain dust, iron scale is collected near sealing structure, thus reducing axle
The service life held, improves the use cost of user, reduces lubricant consumption.In order to solve the above problems, the present invention is in rolling
It is provided with dust cover, dust cover by the outer outlet body being fixed on outer ring and is fixed on interior at single lip sealing ring of sub- turntable bearing
Dust retaining ring on circle is constituted, and described outer outlet body is located at the outside of sealing ring, and one end of outer outlet body is fixed on outer ring, outer outlet body
Another dust-break end and inner ring outer surface there is gap, described dust retaining ring is arranged in outer housing body, and dust retaining ring is fixed on inner ring
And between the outer face of dust retaining ring and outer outlet body, there is gap.Described dust retaining ring is connected with the peace for being fixed on inner ring
Dress circle, one end of installing ring is passed through fastening bolt fixation and is set on inner ring, the other end of installing ring from outer outlet body and inner ring it
Between gap stretch into and be fixedly connected with dust retaining ring.The ring body of dust retaining ring is axially arranged perpendicular to outer ring, the dust-break of outer outlet body
End is parallel to each other with the ring body of dust retaining ring.
Beneficial effect
1st, the three-row roller turntable bearing of the present invention, increases the knot carrying out axial pretightening for thrust roller in Bearing inner
Structure, eliminates the clearance between the thrust roller of three-row roller turntable bearing and roller surface, prevents bearing to be in vibrations shape for a long time
State and lead to the damage to roller-way face for the roller.
2nd, the three-row roller turntable bearing of the present invention has dust cover, and dust cover is arranged on outside sealing ring, and dust cover can
Effectively prevent bulky grain dust and other impurities from destroying the sealing mechanism of bearing, thus improving the service life of bearing.
Brief description
Fig. 1 is the structural representation of three-row roller turntable bearing of the present invention；
Fig. 2 is the partial structural diagram at three-row roller turntable bearing raceway plate of the present invention；
Fig. 3 is the structural representation of the dust cover of three-row roller turntable bearing of the present invention；
In figure labelling: 1, outer ring, the 2, first inner ring, the 3, second inner ring, 4, radial roller, the 5, first thrust roller, 6,
Two thrust rollers, 7, annular groove, 8, spring, 9, raceway plate, 10, pretension bolt hole, 11, single lip sealing ring, 12, outer outlet body,
13rd, dust retaining ring, 14, installing ring.
Specific embodiment
As shown in the figure: a kind of three-row roller turntable bearing with axial pretightening, including outer ring 1, inner ring, rolling element and guarantor
Hold frame, the second inner ring 3 that inner ring includes superposed first inner ring 2 and is located at bottom, rolling element include radial roller 4, the
One thrust roller 5 and the second thrust roller 6, described outer ring 1 has a ring-shaped step, two annular table terraces of ring-shaped step
The second inner ring 3 composition the first thrust roller 5 raceway with superposed first inner ring 2 and being located at bottom respectively and the second thrust
Roller 6 raceway, is provided with single lip sealing ring between described first inner ring 2 and outer ring 1 and between the second inner ring 3 and outer ring 1
11, the roller surface that described second inner ring 3 is contacted with the second thrust roller 6 has annular groove 7, along groove in annular groove 7
Bottom even offer multiple blind holes, spring 8 is installed in blind hole, is embedded with described annular groove 7 and can carry second and push away
The raceway plate 9 of power roller 6, the surface that raceway plate 9 is contacted with the second thrust roller 6 has quench-hardened case, the lower end of raceway plate 9 and bullet
Spring 8 is fixedly connected.
The installation of bearing for convenience, is fixedly connected one end in described raceway plate 9 with spring 8 and is additionally provided with pretension bolt hole
10, before installation, it is connected with raceway plate 9 through the second inner ring 3 by pretension bolt, by pretension bolt by raceway plate 9 down
Draw, make spring 8 be in compressive state, the roller surface of raceway plate 9 and the second inner ring 3 maintains an equal level, then carry out the installation combination of bearing,
After installation terminates, taking down pretension bolt makes spring 8 be in compressive state all the time, and raceway plate 9 is subject to the pretightning force of spring 8 all the time.
Because the working environment of large lifting equipment is typically more severe, existing bearing only has single sealing structure,
Cannot be effectively in the face of the outside debris invasion such as bulky grain dust, iron scale is collected near sealing structure, thus reducing axle
The service life held, improves the use cost of user, reduces lubricant consumption.In order to solve the above problems, the present invention is in rolling
It is provided with dust cover, dust cover by the outer outlet body 12 being fixed on outer ring 1 and is consolidated at single lip sealing ring 11 of sub- turntable bearing
The dust retaining ring 13 being scheduled on inner ring is constituted, and described outer outlet body 12 is located at the outside of sealing ring, and one end of outer outlet body 12 is fixed on
On outer ring 1, another dust-break end of outer outlet body 12 and inner ring outer surface have gap, and described dust retaining ring 13 is arranged on outer outlet body 12
Interior, dust retaining ring 13 is fixed on inner ring and has gap between the outer face of dust retaining ring 13 and outer outlet body 12.Described dust retaining ring 13
It is connected with the installing ring 14 for being fixed on inner ring, one end of installing ring 14 is set in inner ring by fastening bolt fixation
On, the other end of installing ring 14 gap between outer outlet body 12 and inner ring is stretched into and is fixedly connected with dust retaining ring 13.Dust retaining ring
13 ring body is axially arranged perpendicular to outer ring 1, and the dust-break end of outer outlet body 12 and the ring body of dust retaining ring 13 are parallel to each other.
The three-row roller turntable bearing of the present invention, increases the knot carrying out axial pretightening for thrust roller in Bearing inner
Structure, eliminates the clearance between the thrust roller of three-row roller turntable bearing and roller surface, prevents bearing to be in vibrations shape for a long time
State and lead to the damage to roller-way face for the roller.
Claims (6)
1. a kind of three-row roller turntable bearing with axial pretightening, including outer ring (1), inner ring, rolling element and retainer, inner ring
Including superposed first inner ring (2) with the second inner ring (3) of being located at bottom, rolling element includes radial roller (4), first pushes away
Power roller (5) and the second thrust roller (6), between described first inner ring (2) and outer ring (1) and the second inner ring (3) and outer ring
(1) be provided with single lip sealing ring (11) between it is characterised in that: described second inner ring (3) is connected with the second thrust roller (6)
Tactile roller surface has annular groove (7), and in annular groove (7), the bottom even along groove offers multiple blind holes, in blind hole
Spring (8) is installed, in described annular groove (7), is embedded with the raceway plate (9) that can carry the second thrust roller (6), raceway plate
(9) lower end is fixedly connected with spring (8).
2. as claimed in claim 1 a kind of three-row roller turntable bearing with axial pretightening it is characterised in that: described raceway
The surface that plate (9) is contacted with the second thrust roller (6) has quench-hardened case.
3. as claimed in claim 1 a kind of three-row roller turntable bearing with axial pretightening it is characterised in that: described raceway
Plate (9) is fixedly connected one end with spring (8) and is additionally provided with pretension bolt hole (10).
4. as claimed in claim 1 a kind of three-row roller turntable bearing with axial pretightening it is characterised in that: described roller
Single lip sealing ring (11) place of turntable bearing is provided with dust cover, and dust cover is by the outer outlet body (12) being fixed on outer ring (1)
Constitute with the dust retaining ring (13) being fixed on inner ring, described outer outlet body (12) is located at the outside of sealing ring, outer outlet body (12)
One end is fixed on outer ring (1), and another dust-break end of outer outlet body (12) and inner ring outer surface have gap, described dust retaining ring (13)
It is arranged in outer outlet body (12), dust retaining ring (13) is fixed on inner ring and between the outer face of dust retaining ring (13) and outer outlet body (12)
There is gap.
5. as claimed in claim 4 a kind of three-row roller turntable bearing with axial pretightening it is characterised in that: described dust-break
Ring (13) is connected with the installing ring (14) for being fixed on inner ring, and one end of installing ring (14) is fixed by fastening bolt
Be set on inner ring, the other end of installing ring (14) from outer outlet body (12) gap and inner ring between stretch into and with dust retaining ring (13)
It is fixedly connected.
6. as claimed in claim 4 a kind of three-row roller turntable bearing with axial pretightening it is characterised in that: described dust-break
The ring body of ring (13) is axially arranged perpendicular to outer ring (1), and the dust-break end of outer outlet body (12) is mutual with the ring body of dust retaining ring (13)
Parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103527.1A CN104632883B (en) | 2015-03-10 | 2015-03-10 | Three-row-roller type turntable bearing with axial pre-compression structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103527.1A CN104632883B (en) | 2015-03-10 | 2015-03-10 | Three-row-roller type turntable bearing with axial pre-compression structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632883A CN104632883A (en) | 2015-05-20 |
| CN104632883B true CN104632883B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103527.1A Active CN104632883B (en) | 2015-03-10 | 2015-03-10 | Three-row-roller type turntable bearing with axial pre-compression structure |
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| Country | Link |
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| CN (1) | CN104632883B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015217323A1 (en) * | 2015-09-10 | 2017-03-16 | Aktiebolaget Skf | Clamping device and method for preloading a bearing |
| CN110566577A (en) * | 2019-10-11 | 2019-12-13 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Pretightening force adjustable precision combined bearing |
| CN111255802B (en) * | 2020-03-25 | 2021-06-11 | 烟台海英机械有限公司 | Multistage transmission type bearing |
| CN111734735A (en) * | 2020-07-03 | 2020-10-02 | 中国铁建重工集团股份有限公司 | Outer ring of main bearing of tunneling machine and main bearing of tunneling machine |
| CN111749981B (en) * | 2020-07-03 | 2022-07-08 | 中国铁建重工集团股份有限公司 | Shield constructs owner bearing and outer lane thereof |
| CN114483775A (en) * | 2022-01-28 | 2022-05-13 | 中国铁建重工集团股份有限公司 | Slewing bearing and assembling method thereof |
| CN114857168B (en) * | 2022-05-11 | 2024-01-05 | 中铁工程装备集团有限公司 | Main bearing of heading machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005053622B4 (en) * | 2005-11-10 | 2014-10-23 | Schaeffler Technologies Gmbh & Co. Kg | Axial-radial bearing, in particular for a rotary table of a machine tool |
| DE202006020465U1 (en) * | 2006-11-27 | 2008-09-11 | Rothe Erde Gmbh | Roller bearings, in particular center-free slewing bearings |
| DE102009015827B4 (en) * | 2009-04-01 | 2023-11-02 | Ab Skf | Bearing arrangement for rotatably supporting a machine part |
| CN201588875U (en) * | 2009-12-22 | 2010-09-22 | 常州市南港港口机械有限公司 | Three-row cylindrical roller slewing bearing |
| CN102094898A (en) * | 2010-12-09 | 2011-06-15 | 瓦房店轴承集团有限责任公司 | Three-row equal-diameter cylindrical roller turntable bearing |
| CN103148096A (en) * | 2011-12-06 | 2013-06-12 | 大连国威轴承股份有限公司 | Rotary table bearing used for blast furnace |
| CN204553552U (en) * | 2015-03-10 | 2015-08-12 | 洛阳新强联回转支承股份有限公司 | A kind of three-row roller turntable bearing with axial pretightening |
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2015
- 2015-03-10 CN CN201510103527.1A patent/CN104632883B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104632883A (en) | 2015-05-20 |
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