CN101603568A - Two-row ball bearing assembly - Google Patents
Two-row ball bearing assembly Download PDFInfo
- Publication number
- CN101603568A CN101603568A CNA2008101222297A CN200810122229A CN101603568A CN 101603568 A CN101603568 A CN 101603568A CN A2008101222297 A CNA2008101222297 A CN A2008101222297A CN 200810122229 A CN200810122229 A CN 200810122229A CN 101603568 A CN101603568 A CN 101603568A
- Authority
- CN
- China
- Prior art keywords
- inner ring
- outer ring
- ball bearing
- row
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
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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
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
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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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/08—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
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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 present invention relates to a kind of bearing, existing tension wheel structure complexity, inconvenience is installed, two-row ball bearing assembly of the present invention comprises an inner ring, one outer ring, some steel balls, it is characterized in that: inner ring, have two bear inner ring grooved railway on the outer ring respectively, outer ring raceway, some steel balls are two row and lay respectively between the corresponding bear inner ring grooved railway and outer ring raceway, every row steel ball is kept by a retainer, between two row steel balls, inject grease, at inner ring, be respectively fitted with a dust cover between the two end part of outer ring, the endoporus of inner ring is made mounting hole, and the outer circumferential face of outer ring is made clean tensioning contact structures.The present invention is by making bearing the double column structure form, and the endoporus of inner ring is made mounting hole, the outer circumferential face of bearing outer ring is made the tensioning contact structures, thereby existing relatively Idle wheel has reduced by a wheel body member, makes simple in structure; And the present invention is outside the characteristics that possess the Idle wheel that comprises two bearings, and its mounting hole only is the endoporus of an inner ring, therefore is convenient to install.
Description
Technical field
The present invention relates to a kind of bearing, especially be transformed into the two-row ball bearing assembly of Idle wheel.
Background technique
In mechanical transmission such as belt transmission, chain transmission, wire rope transmission, loosening for fear of transmission components such as belt, chain wire ropes, often need be at these transmission component upper support Idle wheels, guarantee normally carrying out of transmission in order to keep the tension force that they have requirement.Existing Idle wheel, mostly be to constitute: the tensioning contact structures promptly are set on wheel body by bearing and wheel body two-part, again with Bearing Installation in wheel body, make wheel body can rotate relative to bearing inner race together with the bearing outer ring close-fitting together, its complex structure, manufacturing, matching requirements height are installed inconvenience; The Idle wheel that two bearings are installed is more arranged in a wheel body, and this kind structure is because many bearings, thus structure is more complicated, makes, assembling, install more inconvenient; Further, the workplace of Idle wheel is how relatively more abominable, rotates frequently, therefore the sealability of bearing is had relatively high expectations, and the dust cover of existing bearing is difficult to realize such requirement, often causes bearing to leak fat, the working life of having reduced whole Idle wheel.Cause belt slippage when in addition, the Idle wheel general labourer of the tension device of locating to use at elevator speed governor etc. does easily.
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is the defective that overcomes existing tension wheel structure complexity, inconvenience is installed, and a kind of two-row ball bearing assembly is provided, and overcomes the defective that working life is short, belt easily skids on this basis.For this reason, the present invention is by the following technical solutions:
Two-row ball bearing assembly, comprise an inner ring, an outer ring, some steel balls, it is characterized in that: have two bear inner ring grooved railway, outer ring raceway on described inner ring, the outer ring respectively, described some steel balls are two row and lay respectively between the corresponding bear inner ring grooved railway and outer ring raceway, every row steel ball is kept by a retainer, between two row steel balls, inject grease, between the two end part of described inner ring, outer ring, be respectively fitted with a dust cover, the endoporus of described inner ring is made mounting hole, and the outer circumferential face of described outer ring is made clean tensioning contact structures.
The invention has the beneficial effects as follows: by bearing being made the double column structure form, and the endoporus of inner ring made mounting hole, the outer circumferential face of bearing outer ring is made the tensioning contact structures, thereby existing relatively Idle wheel has reduced by a wheel body member, makes simple in structure; And the present invention is outside the characteristics that possess the Idle wheel that comprises two bearings, and its mounting hole only is the endoporus of an inner ring, therefore is convenient to install; Further, guarantee not leak fat in the use, increase the service life by structural design to bearing greasing and dust cover; And belt is non-slip during the unique design assurance work of tensioning contact structures, is particularly useful for guaranteeing in the speed-limiting protection of elevator the work safety of elevator.
Description of drawings
Fig. 1 is the cross-sectional view of the present invention along its axis.
Fig. 2 is the A bilge construction enlarged view of Fig. 1.
Fig. 3 is the B bilge construction enlarged view of Fig. 1.
Fig. 4 is the C bilge construction enlarged view of Fig. 1.
Among the figure:
The 1-inner ring, the 11-bear inner ring grooved railway, the 12-endoporus, the axial surface of contact of 13-, 14-is surface of contact radially;
The 2-outer ring, 21-outer ring raceway, 22-outer circumferential face, 23-groove, 24-peak portion, 25-inner groove, 26-leading surface, the spacing edge of 27-, 28-radial sealing surfaces, β-angle;
The 3-steel ball; The 4-retainer; The 6-grease;
The 5-dust cover, 51-axial seal face, the 52-circumferential surface, 53-is out of shape auxiliary slot, 54-axial seal lip, 55-radial seal lip;
R-radial interference amount; R-radial interference amount; The axial magnitude of interference of D-; The 7A-enclosed cavity; The 7B-enclosed cavity.
Embodiment
The present invention will be further described below in conjunction with Figure of description.
As shown in Figure 1, this two-row ball bearing assembly comprises an inner ring 1, an outer ring 2, some steel balls 3, have two bear inner ring grooved railway 11, outer ring raceway 21 on inner ring 1, the outer ring 2 respectively, some steel balls 3 are two row and lay respectively between the corresponding bear inner ring grooved railway 11 and outer ring raceway 21, every row steel ball is kept by a retainer 4, between two row steel balls, inject grease 6, between the two end part of inner ring 1, outer ring 2, be respectively fitted with a dust cover 5, the endoporus 12 of inner ring 1 is made mounting hole, and the outer circumferential face 22 of outer ring 2 is made clean tensioning contact structures.
This two-row ball bearing assembly is by making bearing the double column structure form, and the endoporus of inner ring is made mounting hole, the outer circumferential face of bearing outer ring is made the tensioning contact structures, thereby existing relatively Idle wheel has reduced by a wheel body member, makes simple in structure; And the present invention is outside the characteristics that possess the Idle wheel that comprises two bearings, and its mounting hole only is the endoporus of an inner ring, therefore is convenient to install.
As to further the improving and replenishing of technique scheme, the present invention also comprises following each section additional technical feature, so that be applied to technique scheme implementing when of the present invention they are combined separately or arbitrarily:
The endoporus 12 of described inner ring 1 is a circular hole, and the tensioning contact structures are for several are used for groove 23 to belt tension, is particularly useful for guaranteeing in the speed-limiting protection of elevator the work safety of elevator; Further, the cross section of groove 23 is V-shaped, and the bottom of groove 23 is circular-arc, its bi-side are the plane, thereby guarantee when belt is positioned at groove with certain force of strain, circular-arc bottom be belt with the side of groove fully contact abdicate the space and when rotating belt be easy in groove, break away from, therefore, preferably 90 ° of the angle β of structure bi-side; In this case, form peak portion 24 between the adjacent grooves, and the top shape that departs from the top shape of a peak portion of outer circumferential face center n-n of outer ring and all the other peak portions is different (referring to Fig. 4, the napex of one of them peak portion is shaped as straight line shape, the top shape of all the other peak portions is an arc shaped) so that have marked effect when mounted.
Referring to Fig. 2, an inner groove 25 is respectively offered at the two end part of described outer ring 2, and each inner groove 25 includes a leading surface 26 towards the outside, face inboard mutually spacing edge 27 and the radial sealing surfaces 28 between leading surface 26 and spacing edge 27; Dust cover 5 has an axial seal face 51 and a circumferential surface 52, and circumferential surface 52 relative radial sealing surfaces 28 have radial interference amount R (in order to express this radial interference amount R, it shown in the figure state before circumferential surface 52 distortion, after the distortion, circumferential surface 52 will be fitted on the radial sealing surfaces 28); Circumferential surface 52 elasticity are squeezed in the radial seal district that produces resiliently deformable formation dust cover and outer ring on the radial sealing surfaces 28 and are subjected to the restriction of spacing edge 27 axial seal face 51 to be fitted in the axial seal district that constitutes dust cover and outer ring on the leading surface 26; Further, form enclosed cavity 7A between the contacting part of the contacting part of leading surface 26, axial seal face 51 and radial sealing surfaces 28, circumferential surface 52, thereby by this enclosed cavity 7A with described radial seal district and axial seal separate from, guarantee the independence in radial seal district and axial seal district, promptly between dust cover 5 and outer ring 2, form independently seal area of twice, guarantee sealing effect thus, avoid grease to leak, the pressure that forms naturally in this sealing 7A chamber has the seal action of strengthening radial seal district and axial seal district simultaneously; On the dust cover dorsad the one side of axial seal face 51 offer the distortion auxiliary slot 53, guarantee that thus seal ring 5 has the better elastic deformability.
Referring to Fig. 3, the two end part of described inner ring 1 respectively are provided with radially surface of contact 14 of an axial surface of contact 13 and; Dust cover 5 has an axial seal lip 54 and a radial seal lip 55, and axial seal lip 54 surface of contact 13 to axial has axial magnitude of interference D and Elastic Contact is axially forming axial seal portion (in order to express this axial magnitude of interference D on the surface of contact 13, be the state before 54 distortion of axial seal lip shown in the figure, after the distortion, axial seal lip 54 will be fitted on the axial surface of contact 13), radial seal lip 55 relatively radially surface of contact 14 has radial interference amount r and Elastic Contact forms radial seal portion (in order to express this radial interference amount r on surface of contact 14 radially, be the state before 55 distortion of radial seal lip shown in the figure, after the distortion, radial seal lip 55 will be fitted in radially on the surface of contact 14); Form enclosed cavity 7B between axial seal lip 54, axial seal lip 55 and the inner ring 1, thereby radial seal portion and axial seal portion are isolated by this enclosed cavity 7B, guarantee the independence of radial seal portion and axial seal portion, promptly between dust cover 5 and inner ring 1, form independently sealed department of twice, guarantee sealing effect thus, avoid grease to leak.
In addition, in order to make dust cover have suitable elastic deformability, select for use materials such as plastics or rubber to make dust cover, simultaneously main body is indeformable when guaranteeing that dust cover is squeezed, in its elastic deformation material, be embedded with rigid support, can directly rigid support be injection-moulded among the elastic deformation material by injection molding way during fabrication.
Above-mentioned sealing configuration, in the outer ring when inner ring rotates, dust cover rotates with the outer ring, the axial seal lip 54 of dust cover, 55 on radial seal lip are fitted in axial surface of contact 13 corresponding on the inner ring, radially rotate on the surface of contact 14, between two dust covers, inner ring, outer ring, formed the cavity of sealing thus, guaranteed that grease does not leak.
Claims (9)
1, two-row ball bearing assembly, comprise an inner ring (1), one outer ring (2), some steel balls (3), it is characterized in that: described inner ring (1), have two bear inner ring grooved railway (11) on the outer ring (2) respectively, outer ring raceway (21), described some steel balls (3) are two row and lay respectively between the corresponding bear inner ring grooved railway (21) and outer ring raceway (21), every row steel ball is kept by a retainer (4), between two row steel balls, inject grease (6), in described inner ring (1), be respectively fitted with a dust cover (5) between the two end part of outer ring (2), the endoporus (12) of described inner ring (1) is made mounting hole, and the outer circumferential face (22) of described outer ring (2) is made clean tensioning contact structures.
2, two-row ball bearing assembly according to claim 1 is characterized in that the endoporus (12) of described inner ring (1) is a circular hole, and described tensioning contact structures are several grooves (23).
3, two-row ball bearing assembly according to claim 2 is characterized in that the cross section of described groove (23) is V-shaped, and the bottom of described groove (23) is circular-arc, and its bi-side are the plane.
4,, it is characterized in that between the adjacent grooves forming peak portion (24), and it is different to depart from the top shape of the top shape of a peak portion at outer circumferential face center (n-n) of described outer ring and all the other peak portions according to claim 2 or 3 described two-row ball bearing assemblies.
5, two-row ball bearing assembly according to claim 1, an inner groove (25) is respectively offered at the two end part that it is characterized in that described outer ring (2), each inner groove (25) include the inboard mutually spacing edge (27) of a leading surface (26), face towards the outside and be positioned at described leading surface (26) and spacing edge (27) between radial sealing surfaces (28); Described dust cover (5) has an axial seal face (51) and a circumferential surface (52), and the described relatively radial sealing surfaces of described circumferential surface (52) (28) has radial interference amount (R); Described circumferential surface (52) elasticity is squeezed in described radial sealing surfaces (28) and goes up the generation resiliently deformable and axial seal face (51) is fitted on the described leading surface (26) by the restriction of described spacing edge (27).
6, two-row ball bearing assembly according to claim 5 is characterized in that forming enclosed cavity (7A) between the contacting part of the contacting part of described leading surface (26), axial seal face (52) and described radial sealing surfaces (28), circumferential surface (52).
7, two-row ball bearing assembly according to claim 5 is characterized in that the one side of dorsad described axial seal face (51) on the described dust cover (5) offers distortion auxiliary slot (53).
8, according to claim 5,6 or 7 described two-row ball bearing assemblies, the two end part that it is characterized in that described inner ring (1) respectively are provided with radially surface of contact (14) of an axial surface of contact (13) and; Described dust cover (5) has an axial seal lip (54) and a radial seal lip (55), and the described relatively axial surface of contact of described axial seal lip (54) (13) have axial magnitude of interference (D) and Elastic Contact on described axial surface of contact (13), the described relatively radially surface of contact of described radial seal lip (55) (14) have radial interference amount (r) and Elastic Contact on described radially surface of contact (14).
9, two-row ball bearing assembly according to claim 8 is characterized in that forming enclosed cavity (7B) between described axial seal lip (54), axial seal lip (55) and the described inner ring (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101222297A CN101603568A (en) | 2008-11-13 | 2008-11-13 | Two-row ball bearing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101222297A CN101603568A (en) | 2008-11-13 | 2008-11-13 | Two-row ball bearing assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101603568A true CN101603568A (en) | 2009-12-16 |
Family
ID=41469427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101222297A Pending CN101603568A (en) | 2008-11-13 | 2008-11-13 | Two-row ball bearing assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101603568A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128209A (en) * | 2011-03-05 | 2011-07-20 | 中山市盈科轴承制造有限公司 | Double-row angular contact ball bearing for machine-roomless elevator |
| CN103423296A (en) * | 2013-08-13 | 2013-12-04 | 无锡市第二轴承有限公司 | V-groove bearing |
| CN107013569A (en) * | 2015-11-25 | 2017-08-04 | 株式会社捷太格特 | Rolling bearing |
| CN107152461A (en) * | 2017-06-30 | 2017-09-12 | 中山市盈科轴承制造有限公司 | Nonstandard four-point contact ball |
| CN107504059A (en) * | 2017-08-26 | 2017-12-22 | 昆山日晟轴承有限公司 | A kind of double-row angular contact bal bearing and its processing technology |
| CN109780052A (en) * | 2019-02-26 | 2019-05-21 | 嘉兴福可吉精密机械有限公司 | High-accuracy automobile tension wheel bearing |
| CN110345211A (en) * | 2018-04-03 | 2019-10-18 | 斯凯孚公司 | For idler roller or the pulley arrangement of take-up roll |
| CN112805482A (en) * | 2018-09-27 | 2021-05-14 | 尼得科Gpm有限公司 | Rolling bearing with sealing assembly and water pump with same |
| CN117548696A (en) * | 2023-11-21 | 2024-02-13 | 宁波特克轴承有限公司 | Processing technology and equipment for bearing outer ring of outer ring double-channel stop groove |
-
2008
- 2008-11-13 CN CNA2008101222297A patent/CN101603568A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128209A (en) * | 2011-03-05 | 2011-07-20 | 中山市盈科轴承制造有限公司 | Double-row angular contact ball bearing for machine-roomless elevator |
| CN103423296A (en) * | 2013-08-13 | 2013-12-04 | 无锡市第二轴承有限公司 | V-groove bearing |
| CN107013569A (en) * | 2015-11-25 | 2017-08-04 | 株式会社捷太格特 | Rolling bearing |
| CN107152461A (en) * | 2017-06-30 | 2017-09-12 | 中山市盈科轴承制造有限公司 | Nonstandard four-point contact ball |
| CN112815011A (en) * | 2017-06-30 | 2021-05-18 | 中山市盈科轴承制造有限公司 | Bearing sealing structure |
| CN107504059A (en) * | 2017-08-26 | 2017-12-22 | 昆山日晟轴承有限公司 | A kind of double-row angular contact bal bearing and its processing technology |
| CN110345211A (en) * | 2018-04-03 | 2019-10-18 | 斯凯孚公司 | For idler roller or the pulley arrangement of take-up roll |
| CN112805482A (en) * | 2018-09-27 | 2021-05-14 | 尼得科Gpm有限公司 | Rolling bearing with sealing assembly and water pump with same |
| CN109780052A (en) * | 2019-02-26 | 2019-05-21 | 嘉兴福可吉精密机械有限公司 | High-accuracy automobile tension wheel bearing |
| CN117548696A (en) * | 2023-11-21 | 2024-02-13 | 宁波特克轴承有限公司 | Processing technology and equipment for bearing outer ring of outer ring double-channel stop groove |
| CN117548696B (en) * | 2023-11-21 | 2024-05-14 | 宁波特克轴承有限公司 | Processing technology and equipment for bearing outer ring of outer ring double-channel stop groove |
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| PB01 | Publication | ||
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Open date: 20091216 |