CN101813124A - Double-row angular contact waist drum shaped roller bearing and bearing unit - Google Patents
Double-row angular contact waist drum shaped roller bearing and bearing unit Download PDFInfo
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- CN101813124A CN101813124A CN201010133494A CN201010133494A CN101813124A CN 101813124 A CN101813124 A CN 101813124A CN 201010133494 A CN201010133494 A CN 201010133494A CN 201010133494 A CN201010133494 A CN 201010133494A CN 101813124 A CN101813124 A CN 101813124A
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- inner ring
- outer ring
- raceway groove
- centre circle
- row
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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
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller bearings
Abstract
The invention discloses a double-row angular contact waist drum shaped roller bearing. The existing double-row angular contact ball bearing has too low bearing capacity, a double-row angular contact conical roller bearing enhances little in approval dynamic load compared with the double-row angular contact ball bearing but reduces much in high speed performance, and important occasions of moderate load and moderate speed such as an automobile wheel hub bearing and the like is difficult to make the best of both worlds. The double-row angular contact waist drum shaped roller bearing comprises two paratactic inner rings, an outer ring and a plurality of rollers, the outer walls of the two inner rings are respectively provided with an inner ring channel, the inner wall of the outer ring is provided with two paratactic outer ring channels, a plurality of the rollers are in two rows which are respectively retained between an inner ring channel and an outer ring channel which correspond with each other by retainers, and the two rows of the rollers have contact angles of opposite directions. The bearing has the characteristics that the rollers are waist drum shaped. When being loaded, the contact area of the waist drum shaped rollers and the channels are between the contact areas of a ball steel ball and a conical roller, and the bearing has the technical advantages of both the ball bearing and the conical roller bearing, has wide application in occasions of moderate speed and moderate load and is especially suitable for an automobile wheel hub unit.
Description
Technical field
The invention belongs to bearing, specifically is double-row angular contact waist drum shaped roller bearing and the bearing unit (as automobile hub unit) that comprises this bearing, and it has the technological merit of double-row angular contact bal bearing and biserial angle contacting tapered roller bearing concurrently.
Background technique
At present, apply to the internal structure design on the automobile hub bearing, be double-row angular contact bal bearing or be biserial angle contacting tapered roller bearing.The former is owing to make easyly, with low cost and extensively favored, but because limited as the steel ball bearing capacity of rolling element, it is shorter often can only to be applied to underloading vehicle and life-span; It is stronger that the latter appraises and decides the dead load bearing capacity, be widely used in heavy-duty vehicle, but because it makes comparatively complexity, precision is difficult to hold, heating value is big, and appraising and deciding dynamic load increases limitedly with respect to the former, often be difficult to reach the ideal design life-span in actual applications, and manufacture cost is higher, and its limit speed is also less than the ball bearing height.
Summary of the invention
Technical assignment of the present invention provides a kind of technological merit that has double-row angular contact bal bearing and biserial angle contacting tapered roller bearing concurrently, can carry double-row angular contact waist drum shaped roller bearing and the bearing unit that occasion has extensive use in middling speed.For this reason, the present invention is by the following technical solutions:
Double-row angular contact waist drum shaped roller bearing, comprise two inner rings arranged side by side, be enclosed within an outer ring, some rollers in described two inner rings outside, the outer wall of described two inner rings respectively has a bear inner ring grooved railway, the inwall of described outer ring has two arranged side by side adapting and corresponding with the bear inner ring grooved railway of described two inner rings respectively outer ring raceway with described roller shape, described some rollers are two row and remain between corresponding bear inner ring grooved railway and the outer ring raceway respectively by retainer and two row rollers have rightabout wrapping angle, and it is characterized in that: described roller is dolioform.
As preferably, the dolioform surface of described roller becomes circular arc line with Plane intersects by the roller shaft axis, and the radius of curvature of this circular arc line satisfies 2R＞D, and described R is the radius of curvature of this circular arc line, and described D is the maximum cross section diameter of drum-shaped roller.
As preferably, at least one raceway groove comprises that being positioned at this raceway groove intermediate portion is used to contact the carrying profile of the dolioform surperficial intermediate portion of described roller and is positioned at these carrying profile both sides and constitutes the spacing profile of the dolioform surperficial two-end part of corresponding described roller of raceway groove together with this carrying profile in described outer ring raceway, the bear inner ring grooved railway.Further, described carrying profile, spacing profile become circular arc line with Plane intersects by bearing axis.Described carrying profile, spacing profile connect and compose raceway groove through the channel form transition part.
As preferably, described wrapping angle is 0 °≤α≤45 °, and described α is the size of wrapping angle.
Double-row angular contact waist drum shaped roller bearing, comprise inner ring, be enclosed within the centre circle in the described inner ring outside, be enclosed within the outer ring in the described centre circle outside, some rolling elements, the outer wall of described inner ring has bear inner ring grooved railway, the inwall of described centre circle has with described roller shape and adapts and first corresponding with the described bear inner ring grooved railway respectively centre circle raceway groove, the outer wall of described centre circle has the second centre circle raceway groove, the inwall of described outer ring has and the corresponding outer ring raceway of the described second centre circle raceway groove, described some rolling elements divide for by retainer and remain on the internal layer rolling element between corresponding bear inner ring grooved railway and the first centre circle raceway groove and remain on second corresponding centre circle raceway groove and the outer rolling element between the outer ring raceway by retainer, it is characterized in that: in described internal layer rolling element and the outer rolling element at least one deck rolling element be drum-shaped roller, this layer drum-shaped roller is two column distributions in the raceway groove of correspondence, the centre circle that forms this two row raceway groove is one, form the outer ring of this two row raceway groove or/and inner ring is arranged side by side two, this two row drum-shaped roller has rightabout wrapping angle.
Double-row angular contact waist drum shaped roller bearing unit, comprise two inner rings arranged side by side, be enclosed within an outer ring in described two inner rings outside, some rollers, the outer wall of described two inner rings respectively has a bear inner ring grooved railway, the inwall of described outer ring has two arranged side by side adapting and corresponding with the bear inner ring grooved railway of described two inner rings respectively outer ring raceway with described roller shape, described some rollers are two row and remain between corresponding bear inner ring grooved railway and the outer ring raceway respectively by retainer and two row rollers have rightabout wrapping angle, it is characterized in that: described roller is dolioform, at least one and unit member assembling or extend linking body structure in described inner ring and the outer ring.
Double-row angular contact waist drum shaped roller bearing unit, comprise inner ring, be enclosed within the centre circle in the described inner ring outside, be enclosed within the outer ring in the described centre circle outside, some rolling elements, the outer wall of described inner ring has bear inner ring grooved railway, the inwall of described centre circle has the first centre circle raceway groove corresponding with described bear inner ring grooved railway, the outer wall of described centre circle has the second centre circle raceway groove, the inwall of described outer ring has and the corresponding outer ring raceway of the described second centre circle raceway groove, described some rolling elements divide for by retainer and remain on the internal layer rolling element between corresponding bear inner ring grooved railway and the first centre circle raceway groove and remain on second corresponding centre circle raceway groove and the outer rolling element between the outer ring raceway by retainer, it is characterized in that: in described internal layer rolling element and the outer rolling element at least one deck rolling element be drum-shaped roller, this layer drum-shaped roller is two column distributions in the raceway groove of correspondence, the centre circle that forms this two row raceway groove is one, form the outer ring of this two row raceway groove or/and inner ring is arranged side by side two, this two row drum-shaped roller has rightabout wrapping angle, at least one and unit member assembling or extend linking body structure in described inner ring and the outer ring.
The invention has the beneficial effects as follows: during stand under load, the area of contact of drum-shaped roller and raceway groove is between spherical steel ball and tapered roller, have the technological merit of double-row angular contact bal bearing and biserial angle contacting tapered roller bearing concurrently, can in middling speed, carry occasion and have extensive use, be specially adapted to automobile hub unit.
Description of drawings
Fig. 1 is the sectional view of a kind of structure of the double-row angular contact waist drum shaped roller bearing of the present invention by the plane of bearing axis.
Fig. 2 is the schematic representation that the raceway groove that is connected and composed through the channel form transition part by carrying profile, spacing profile of the double-row angular contact waist drum shaped roller bearing of the present invention cooperates with drum-shaped roller.
Fig. 3 is the sectional view of the another kind of structure of the double-row angular contact waist drum shaped roller bearing of the present invention by the plane of bearing axis.
Fig. 4 be the double-row angular contact waist drum shaped roller bearing of the present invention the third structure partly cut open figure.
Fig. 5 be the double-row angular contact waist drum shaped roller bearing of the present invention the 4th kind of structure partly cut open figure.
Fig. 6 be the double-row angular contact waist drum shaped roller bearing of the present invention the 5th kind of structure partly cut open figure.
Fig. 7 be the double-row angular contact waist drum shaped roller bearing of the present invention the 6th kind of structure partly cut open figure.
Fig. 8 is a kind of structural representation of the double-row angular contact waist drum shaped roller bearing of the present invention unit.
Fig. 9 is the another kind of structural representation of the double-row angular contact waist drum shaped roller bearing of the present invention unit.
The number in the figure explanation:
The 1-inner ring, the 11-bear inner ring grooved railway;
The 2-outer ring, the 21-outer ring raceway, 22-carries profile, the spacing profile of 23-, 24-channel form transition part
The 3-roller, 31-internal layer rolling element, the outer rolling element of 32-;
The 4-retainer;
The 5-centre circle, the 51-first centre circle raceway groove, the 52-second centre circle raceway groove;
The 6-unit member; The 7-dust cover, the 8-linking body structure;
α-wrapping angle, the normal of n-n-bearing ring and roller contacting point, the o-o-bearing axis, S-S-is perpendicular to the plane of bearing axis;
The radius of curvature of the circular arc line that the surface of R-drum-shaped roller and Plane intersects by the roller shaft axis form, D-is the diameter of the maximum cross section of drum-shaped roller, the shaft axis of m-m-drum-shaped roller.
Embodiment
The present invention will be further described below in conjunction with Figure of description.
Be a kind of structure of double-row angular contact waist drum shaped roller bearing of the present invention as shown in Figure 1, it comprises two inner rings 1 arranged side by side, be enclosed within an outer ring 2 in two inner ring 1 outsides, some rollers 3, the outer wall of two inner rings 1 respectively has a bear inner ring grooved railway 11, the inwall of outer ring 2 has two arranged side by side adapting with roller 3 shapes and corresponding with the bear inner ring grooved railway 11 of two inner rings respectively outer ring raceway 21, some rollers are two row and remain between corresponding bear inner ring grooved railway 11 and the outer ring raceway 21 respectively by retainer 4 and two row rollers have rightabout wrapping angle α, and characteristics are that roller 3 is dolioform.Described wrapping angle α is meant the normal n-n of the lasso (as the outer ring) of bearing and roller contacting point and perpendicular to the angle between planar S-S of bearing axis o-o; Described wrapping angle direction is opposite, is meant that this angle lays respectively at the both sides perpendicular to the plane of bearing axis that form this angle (among the figure one in the left side, on the right side), thereby makes bearing can bear the axial force of both direction.
General, during the ball bearing stand under load, the contact position of steel ball and raceway groove is actual to be an ellipse, the area S=π ab that this is oval, wherein π is a Ratio of the circumference of a circle to its diameter, a is oval minor axis, b long axis of ellipse (major axis is positioned at the planar S-S perpendicular to bearing axis o-o, and the direction of minor axis is vertical with the direction of major axis).Therefore, if will improve the bearing capacity of asking bearing, will increase this oval area, and the increase of minor axis a means the increase of rolling element diameter, because the restriction of bearing diameter profile, can not arbitrarily increase minor axis a, therefore the size that increases major axis b just becomes feasible way, the radius of curvature of first change raceway groove improves the adaptation with roller surface, but this measure causes bearing seriously to generate heat unexpectedly, improper, moreover be the shape that changes roller, the present invention realizes by this approach (roller is dolioform).The present invention has improved bearing capacity greatly with respect to ball bearing, has both kept the advantage of ball bearing high speed low-heat, has overcome the low shortcoming of carrying of ball bearing again; The present invention has overcome big, the actual limited shortcoming of dynamic load of appraising and deciding of heating value again with respect to tapered roller bearing; During stand under load, the area of contact of drum-shaped roller and raceway groove is between the area of contact of the area of contact of steel ball and raceway groove and tapered roller and raceway groove, have the technological merit of double-row angular contact bal bearing and biserial angle contacting tapered roller bearing concurrently, can in middling speed, carry occasion and have extensive use.
Relatively seeing table of the present invention and double-row angular contact bal bearing, biserial angle contacting tapered roller bearing:
| The roller form | Limit speed | Load capacity | Manufacture difficulty | Manufacture cost | Utilization |
| Steel ball | High | Low | Easily | Low | The economic occasion of underloading high speed |
| The roller form | Limit speed | Load capacity | Manufacture difficulty | Manufacture cost | Utilization |
| Tapered roller | Low | High | Difficult | High | The heavy-duty low-speed important events |
| Drum-shaped roller | In | In | In | Middle high | In carry the middling speed important events |
As further improving and replenishing to technique scheme, the present invention also comprises following additional technical characteristics, though Fig. 1 has comprised following all additional technical features, it is preferred embodiment of the present invention, but the present invention is not limited to this situation, according to specifically acting on they is selected for use on the described technological scheme of epimere when enforcement is of the present invention:
Referring to Fig. 2, the dolioform surface of roller 3 becomes circular arc line with Plane intersects by the roller shaft axis, and the radius of curvature of this circular arc line satisfies 2R＞D, and R is the radius of curvature of this circular arc line, and D is the maximum cross section diameter of drum-shaped roller.Increase the area of the contact stress ellipse of rolling element and channel junction synapsis with this.
Further, outer ring raceway 21 (also can be bear inner ring grooved railway, perhaps comprise bear inner ring grooved railway simultaneously) comprises that being positioned at this raceway groove intermediate portion is used for the carrying profile 22 of the dolioform surperficial intermediate portion of contact roller and is positioned at these carrying profile 22 both sides and constitutes the spacing profile 23 of the dolioform surperficial two-end part of corresponding roller of raceway groove together with this carrying profile 22.Cooperating of two-end part by this spacing profile and roller surface, can further effectively limit the three-dimensional rotation trend of drum-shaped roller when bearing runs up, guarantee that drum-shaped roller can move according to predefined trajectory.Carrying profile 22, spacing profile 23 becomes circular arc line with Plane intersects by bearing axis o-o, is convenient to make.Carrying profile 22, spacing profile 23 connect and compose raceway groove through channel form transition part 24, can store grease in the described channel form transition part 24, are beneficial to lubricated can the cooling with bearing.
Wrapping angle is 0 °≤α≤45 °, and α is the size of wrapping angle.
Be the another kind of structure of double-row angular contact waist drum shaped roller bearing of the present invention as shown in Figure 3, it comprises inner ring 1, be enclosed within the centre circle 5 in inner ring 1 outside, be enclosed within the outer ring 2 in centre circle 5 outsides, some rolling elements, the outer wall of inner ring 1 has bear inner ring grooved railway 11, the inwall of centre circle 5 has the first centre circle raceway groove 51 corresponding with bear inner ring grooved railway 11, the outer wall of centre circle 5 has the second centre circle raceway groove 52, the inwall of outer ring 2 has the outer ring raceway 21 corresponding with the second centre circle raceway groove 52, some rolling elements divide for by retainer 4 and remain on the internal layer rolling element 31 between corresponding bear inner ring grooved railway 11 and the first centre circle raceway groove 51 and remain on second corresponding centre circle raceway groove 52 and the outer rolling element 32 between the outer ring raceway 21 by retainer 4, internal layer rolling element 31 and outer rolling element 32 are drum-shaped roller and are two column distributions in the raceway groove of correspondence, the centre circle 5 that forms this two row raceway groove is one, the outer ring 2 and the inner ring 1 that form this two row raceway groove are arranged side by side two, and this two row drum-shaped roller has rightabout wrapping angle.
Be the third structure of double-row angular contact waist drum shaped roller bearing of the present invention as shown in Figure 4, it is with the difference of Fig. 3: the outer rolling element 32 of this bearing is for drum-shaped roller and be two column distributions in corresponding raceway groove, the centre circle 5 that forms this two row raceway groove is one, the outer ring 2 that forms this two row raceway groove is arranged side by side two, and the outer drum-shaped roller of these two row has rightabout wrapping angle; Internal layer rolling element 31 is two row steel balls, and the inner ring 1 that forms this two row raceway groove is one.
Be the 4th kind of structure of double-row angular contact waist drum shaped roller bearing of the present invention as shown in Figure 5, the difference of itself and Fig. 4 is: internal layer rolling element 31 is columna roller (perhaps needle roller roller).
Be the 5th kind of structure of double-row angular contact waist drum shaped roller bearing of the present invention as shown in Figure 6, it is with the difference of Fig. 3: this bearing internal layer rolling element 31 is for drum-shaped roller and be two column distributions in corresponding raceway groove, the centre circle 5 that forms this two row raceway groove is one, the inner ring 2 that forms this two row raceway groove is arranged side by side two, and the outer drum-shaped roller of these two row has rightabout wrapping angle; Outer rolling element 32 is a row steel ball, or a row wrapping angle is the drum-shaped roller of 0 degree, and the outer ring 2 that forms this row raceway groove is one.
Be the 6th kind of structure of double-row angular contact waist drum shaped roller bearing of the present invention as shown in Figure 7, the difference of itself and Fig. 6 is: outer rolling element 32 is columna roller (perhaps needle roller roller or wrapping angle are the drum-shaped roller of 0 degree).
As shown in Figure 8, it is a kind of structure of the double-row angular contact waist drum shaped roller bearing of the present invention unit, it comprises two inner rings 1 arranged side by side, be enclosed within an outer ring 2 in two inner ring 1 outsides, some rollers 3, the outer wall of two inner rings 1 respectively has a bear inner ring grooved railway 11, the inwall of outer ring 2 has two arranged side by side adapting with the roller shape and corresponding with the bear inner ring grooved railway 11 of two inner rings respectively outer ring raceway 21, some rollers are two row and remain between corresponding bear inner ring grooved railway 11 and the outer ring raceway 21 respectively by retainer 4 and two row rollers have opposite wrapping angle, characteristics are: roller is dolioform, two inner rings 1 constitute automobile hub unit with unit member 6 assemblings and (also can directly extend linking body structure 8 by inner ring 1 and constitute automobile hub unit, referring to Fig. 9; Perhaps constitute automobile hub unit by inner ring 1, outer ring 2 with unit member 6 assemblings simultaneously; Perhaps simultaneously directly extend linking body structure and constitute automobile hub unit by inner ring 1, outer ring 2; Perhaps one of them directly extends linking body structure in inner ring 1, the outer ring 2, and another and unit member 6 assemblings constitute automobile hub unit).
Other structure of the double-row angular contact waist drum shaped roller bearing of the present invention unit is referring to Fig. 3, comprise inner ring 1, be enclosed within the centre circle 5 in inner ring 1 outside, be enclosed within the outer ring 2 in centre circle 5 outsides, some rolling elements, the outer wall of inner ring 1 has bear inner ring grooved railway 11, the inwall of centre circle has the first centre circle raceway groove 51 corresponding with bear inner ring grooved railway 11, the outer wall of centre circle 5 has the second centre circle raceway groove 52, the inwall of outer ring 2 have with the corresponding outer ring raceway 21 of the second centre circle raceway groove 52, some rolling elements divide for by retainer and remain on the internal layer rolling element 31 between corresponding bear inner ring grooved railway 11 and the first centre circle raceway groove 52 and remain on second corresponding centre circle raceway groove 52 and the outer rolling element 32 between the outer ring raceway 21 by retainer, characteristics are: in internal layer rolling element 31 and the outer rolling element 32 at least one deck rolling element be drum-shaped roller, this layer drum-shaped roller is two column distributions in the raceway groove of correspondence, the centre circle 5 that forms this two row raceway groove is one, form the outer ring 2 of this two row raceway groove or/and inner ring 1 is arranged side by side two, this two row drum-shaped roller has rightabout wrapping angle (its specific constructive form, can be among Fig. 3-7 any), at least one and unit member 6 assemblings or extend linking body structure (its specific constructive form can be identical with the described structural type of epimere) in inner ring 1 and the outer ring 2.
Further, the additional technical feature of double-row angular contact waist drum shaped roller bearing shown in Figure 1 can be applied to double-row angular contact waist drum shaped roller bearing shown in Fig. 3-7 and double-row angular contact waist drum shaped roller bearing of the present invention unit, give unnecessary details no longer one by one at this.
In addition, for convenience of explanation, the present invention is divided into ball and roller according to the kind of rolling element on the ordinary meaning in the industry with rolling element, and roller is divided into cylindrical roller, needle roller roller, tapered roller, drum-shaped roller again.Wherein, the length-to-diameter of cylindrical roller is less than or equal to 3; The length-to-diameter of needle roller is greater than 3, but diameter is less than or equal to 5mm.
Claims (9)
1. double-row angular contact waist drum shaped roller bearing, comprise two inner rings (1) arranged side by side, be enclosed within an outer ring (2) in described two inner rings (1) outside, some rollers (3), the outer wall of described two inner rings (1) respectively has a bear inner ring grooved railway (11), the inwall of described outer ring (2) has two arranged side by side adapting with described roller (3) shape and corresponding with the bear inner ring grooved railway (11) of described two inner rings (1) respectively outer ring raceway (21), described some rollers (3) are two row and remain between corresponding bear inner ring grooved railway (11) and the outer ring raceway (21) respectively by retainer (4) and two row rollers have rightabout wrapping angle, and it is characterized in that: described roller (3) is dolioform.
2. double-row angular contact waist drum shaped roller bearing according to claim 1, the dolioform surface that it is characterized in that described roller (3) becomes circular arc line with Plane intersects by the roller shaft axis, the radius of curvature of this circular arc line satisfies 2R＞D, described R is the radius of curvature of this circular arc line, and described D is the maximum cross section diameter of drum-shaped roller.
3. double-row angular contact waist drum shaped roller bearing according to claim 1 and 2 is characterized in that at least one raceway groove in described outer ring raceway (21), the bear inner ring grooved railway (11) comprises that being positioned at this raceway groove intermediate portion is used to contact the carrying profile (22) of the dolioform surperficial intermediate portion of described roller and is positioned at these carrying profile (22) both sides and constitutes the spacing profile (23) of the dolioform surperficial two-end part of corresponding described roller of raceway groove together with this carrying profile.
4. double-row angular contact waist drum shaped roller bearing according to claim 3 is characterized in that described carrying profile (22), spacing profile (23) and Plane intersects by bearing axis become circular arc line.
5. double-row angular contact waist drum shaped roller bearing according to claim 3 is characterized in that described carrying profile (22), spacing profile (23) connect and compose raceway groove through channel form transition part (24).
6. double-row angular contact waist drum shaped roller bearing according to claim 1 is characterized in that described wrapping angle is 0 °≤α≤45 °, and described α is the size of wrapping angle.
7. double-row angular contact waist drum shaped roller bearing, comprise inner ring (1), be enclosed within the centre circle (5) in described inner ring (1) outside, be enclosed within the outer ring (2) in described centre circle (5) outside, some rolling elements, the outer wall of described inner ring (1) has bear inner ring grooved railway (11), the inwall of described centre circle has the first centre circle raceway groove (51) corresponding with described bear inner ring grooved railway (11), the outer wall of described centre circle (5) has the second centre circle raceway groove (52), the inwall of described outer ring (2) has and the corresponding outer ring raceway (21) of the described second centre circle raceway groove (52), described some rolling elements divide for by retainer and remain on the internal layer rolling element (31) between corresponding bear inner ring grooved railway (11) and the first centre circle raceway groove (52) and remain on second corresponding centre circle raceway groove (52) and the outer rolling element (32) between the outer ring raceway (21) by retainer, it is characterized in that: in described internal layer rolling element (31) and the outer rolling element (32) at least one deck rolling element be drum-shaped roller, this layer drum-shaped roller is two column distributions in the raceway groove of correspondence, the centre circle (5) that forms this two row raceway groove is one, form the outer ring (2) of this two row raceway groove or/and inner ring (1) is arranged side by side two, this two row drum-shaped roller has rightabout wrapping angle.
8. double-row angular contact waist drum shaped roller bearing unit, comprise two inner rings (1) arranged side by side, be enclosed within an outer ring (2) in described two inner rings (1) outside, some rollers, the outer wall of described two inner rings (1) respectively has a bear inner ring grooved railway (11), the inwall of described outer ring (2) has two arranged side by side adapting with described roller shape and corresponding with the bear inner ring grooved railway (11) of described two inner rings (1) respectively outer ring raceway (21), described some rollers are two row and remain between corresponding bear inner ring grooved railway (11) and the outer ring raceway (21) respectively by retainer (4) and two row rollers have rightabout wrapping angle, it is characterized in that: described roller (3) is dolioform, and at least one and unit member (6) are assembled or extended linking body structure in described inner ring (1) and outer ring (2).
9. double-row angular contact waist drum shaped roller bearing unit, comprise inner ring (1), be enclosed within the centre circle (5) in described inner ring (1) outside, be enclosed within the outer ring (2) in described centre circle (5) outside, some rolling elements, the outer wall of described inner ring (1) has bear inner ring grooved railway (11), the inwall of described centre circle has the first centre circle raceway groove (51) corresponding with described bear inner ring grooved railway (11), the outer wall of described centre circle (5) has the second centre circle raceway groove (52), the inwall of described outer ring (2) has and the corresponding outer ring raceway (21) of the described second centre circle raceway groove (52), described some rolling elements divide for by retainer and remain on the internal layer rolling element (31) between corresponding bear inner ring grooved railway (11) and the first centre circle raceway groove (52) and remain on second corresponding centre circle raceway groove (52) and the outer rolling element (32) between the outer ring raceway (21) by retainer, it is characterized in that: in described internal layer rolling element (31) and the outer rolling element (32) at least one deck rolling element be drum-shaped roller, this layer drum-shaped roller is two column distributions in the raceway groove of correspondence, the centre circle (5) that forms this two row raceway groove is one, form the outer ring (2) of this two row raceway groove or/and inner ring (1) is arranged side by side two, this two row drum-shaped roller has rightabout wrapping angle, and at least one and unit member (6) are assembled or extended linking body structure in described inner ring (1) and outer ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010133494A CN101813124A (en) | 2010-03-26 | 2010-03-26 | Double-row angular contact waist drum shaped roller bearing and bearing unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010133494A CN101813124A (en) | 2010-03-26 | 2010-03-26 | Double-row angular contact waist drum shaped roller bearing and bearing unit |
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| CN101813124A true CN101813124A (en) | 2010-08-25 |
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| CN201010133494A Pending CN101813124A (en) | 2010-03-26 | 2010-03-26 | Double-row angular contact waist drum shaped roller bearing and bearing unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103429914A (en) * | 2011-03-24 | 2013-12-04 | Skf公司 | Angular contact roller bearing, notably used in a wind turbine |
| CN103697060A (en) * | 2013-12-12 | 2014-04-02 | 洛阳轴研科技股份有限公司 | High-speed bidirectional thrust angular contact bearing |
| CN104565021A (en) * | 2013-10-11 | 2015-04-29 | 株式会社捷太格特 | Tapered roller bearing |
| CN108757737A (en) * | 2018-08-10 | 2018-11-06 | 江苏天驰轴承有限公司 | A kind of bearing and its fusiform rolling element |
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| JP2005061535A (en) * | 2003-08-13 | 2005-03-10 | Nsk Ltd | Rolling bearing |
| US20090310899A1 (en) * | 2006-08-04 | 2009-12-17 | Hidenobu Magami | Double row tapered roller bearing unit |
| CN201100317Y (en) * | 2007-09-14 | 2008-08-13 | 无锡市滚动轴承有限公司 | Center-adjusting roller bearing for vibration machinery |
| CN201100314Y (en) * | 2007-09-14 | 2008-08-13 | 无锡市滚动轴承有限公司 | Center-adjusting roller bearing with acentric cover |
| US20090265947A1 (en) * | 2008-04-23 | 2009-10-29 | Georgia-Pacific Consumer Products Lp | Bearing Alignment Tool and Method Of Use |
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| CN103429914A (en) * | 2011-03-24 | 2013-12-04 | Skf公司 | Angular contact roller bearing, notably used in a wind turbine |
| CN103429914B (en) * | 2011-03-24 | 2016-12-14 | Skf公司 | Angular contact bearing, the angular contact bearing especially used in wind turbine |
| CN104565021A (en) * | 2013-10-11 | 2015-04-29 | 株式会社捷太格特 | Tapered roller bearing |
| CN104565021B (en) * | 2013-10-11 | 2018-04-17 | 株式会社捷太格特 | Taper roll bearing |
| CN103697060A (en) * | 2013-12-12 | 2014-04-02 | 洛阳轴研科技股份有限公司 | High-speed bidirectional thrust angular contact bearing |
| CN108757737A (en) * | 2018-08-10 | 2018-11-06 | 江苏天驰轴承有限公司 | A kind of bearing and its fusiform rolling element |
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Open date: 20100825 |