CN207830362U - A kind of double-row bearing - Google Patents
A kind of double-row bearing Download PDFInfo
- Publication number
- CN207830362U CN207830362U CN201721870404.1U CN201721870404U CN207830362U CN 207830362 U CN207830362 U CN 207830362U CN 201721870404 U CN201721870404 U CN 201721870404U CN 207830362 U CN207830362 U CN 207830362U
- Authority
- CN
- China
- Prior art keywords
- raceway
- contact
- point
- inner ring
- double
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of double-row bearings, include inner ring, outer ring, multiple first rolling elements and multiple second rolling elements, the inner peripheral surface of outer ring is arranged in parallel with the first raceway and the second raceway, and the outer circumference surface of inner ring is arranged in parallel with third raceway and the 4th raceway；First rolling element by the first point of contact and the first raceway contact, pass through third point of contact and third raceway contact, second rolling element by the second point of contact and the second raceway contact, pass through the 4th point of contact and the 4th raceway contact, with being formed radially angle, the first line had both been neither perpendicular to nor parallel to second line of first line at the first point of contact and third point of contact, the second point of contact and the 4th point of contact with the second line；The central shaft of the endoporus of inner ring deviates the central shaft of the outer circumference surface of inner ring.So set, the double-row bearing had not only improved axial control force while ensureing quick rotation, but also realize the function of eccentric shaft rotation.
Description
Technical field
The utility model is related to bearing mnanufacture technical fields, more specifically, being related to a kind of double-row bearing.
Background technology
With being constantly progressive for science and technology, in mechanical manufacturing field, the application of bearing is more and more extensive.The flexibility of bearing
It can be directly related to mechanical transmission structure operational effect and service life with the quality of control performance, bearing technique ground
Studying carefully also gradually becomes emphasis of people's attention.
In the prior art, deep groove ball bearing is a kind of most widely used rolling bearing, have frictional resistance it is small and
The high feature of rotating speed, but axial control force is apparent insufficient；Although needle bearing load-bearing capacity is strong, that there are rotating speeds is low,
The big problem of frictional force.It when bearing needs to realize eccentric function, needs to connect with eccentric structure, manufacturing cost is larger and structure
Complexity is easy to happen failure.
Therefore, how to solve while ensureing the axial control force and rotating speed of bearing, and can realize eccentric rotary function
The problem of, it is those skilled in the art's important technological problems to be solved.
Utility model content
The purpose of this utility model is to provide a kind of double-row bearing, it can efficiently solve and ensure itself
While axial control force and rotating speed, and the problem of can realize eccentric rotary function.
A kind of double-row bearing is present embodiments provided, includes inner ring, outer ring, multiple first rolling elements and multiple
The inner peripheral surface of two rolling elements, the outer ring is arranged in parallel with the first raceway and the second raceway, and the outer circumference surface of the inner ring is flat
Row is provided with third raceway and the 4th raceway；First rolling element by the first point of contact and first raceway contact, pass through
Third point of contact and the third raceway contact, second rolling element by the second point of contact and second raceway contact, pass through
First line, second point of contact at the 4th point of contact and the 4th raceway contact, first point of contact and the third point of contact
With second line at the 4th point of contact with being formed radially angle, first line and second line both out of plumb or
It is not parallel；The central shaft of the endoporus of the inner ring deviates the central shaft of the outer circumference surface of the inner ring.
Preferably, the cross-sectional shape of the endoporus of the inner ring is circle.
Preferably, the endoporus of the inner ring is provided with for the keyway with axis connection.
Preferably, the cross-sectional shape of the endoporus of the inner ring is regular hexagon.
Preferably, first raceway and second raceway are smaller than the third raceway and the 4th raceway
Spacing.
Preferably, ranging from 25 °~35 ° of the angle.
Preferably, further include retainer, the retainer is arranged between the outer ring and the inner ring, first rolling
Kinetoplast and second rolling element are arranged inside the pocket hole of the retainer.
Preferably, first raceway is provided with the first lubrication groove, and second raceway is provided with the second lubrication groove, described
First lubrication groove is located at the contact position of first rolling element and first raceway, and second lubrication groove is located at described the
The contact position of two rolling elements and second raceway.
Preferably, further include having the sealing cover that can will be sealed between the inner ring and the outer ring, the sealing cover is logical
Cross clamp spring be fixed on bearing body both ends.
Preferably, it is provided with oil filler point on the sealing cover, check valve is provided at the aperture of the oil filler point.
In technical solution provided by the utility model, company which passes through rolling element and Internal and external cycle contact point
Line is with being formed radially angle, to improve the axial control force of bearing, by the way that the endoporus of inner ring is provided off Kong Yishi
Show eccentric rotary, while ensureing quick rotation, not only improved axial control force, but also realizes the work(of eccentric shaft rotation
Energy.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the radial cross-section of double-row bearing in the embodiments of the present invention；
Fig. 2 is the axial sectional view of double-row bearing in the embodiments of the present invention.
In figure：The outer rings 1-, 2- inner rings, the first rolling elements of 3-, the second rolling elements of 4-, 5- retainers, 6- sealing covers, 7- inner rings
Endoporus central shaft, 8- inner ring outer circumference surface central shafts, 9- keyways.
Specific implementation mode
It, below will be to the technology of the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Present embodiment is designed to provide a kind of double-row bearing, can effectively improve the axis of itself
To control force and rotating speed, and realize the function of eccentric rotary.
Hereinafter, being illustrated to embodiment with reference to attached drawing.In addition, embodiments illustrated below is not to recorded in claim
Utility model content rise any restriction effect.In addition, the full content of the composition represented by following example is not limited to conduct
Necessary to the solution of utility model recorded in claim.
With reference to figure 1- Fig. 2, present embodiment provides a kind of double-row bearing, includes inner ring 2, outer ring 1,
One rolling element 3 and the second rolling element 4, wherein the first rolling element 3 and the second rolling element 4 are multiple and are located at inner ring 2 and outer ring 1
Between so that inner ring 2 is rotated by two row rolling elements relative to outer ring 1.Inner peripheral surface in outer ring 1 is arranged in parallel with the first rolling
Road and the second raceway are arranged in parallel with third raceway and the 4th raceway in the outer circumference surface of inner ring 2, wherein the first rolling element 3
Between the first raceway and third raceway, the second rolling element 4 is between the second raceway and the 4th raceway, such inner ring 2 and outer
Circle 1 provides two row raceways to two row rolling elements so that inner ring 2 can be consolidated more relative to the rotation of outer ring 1, be had simultaneously
Certain axial control force.Here, the shapes and sizes of rolling element are not particularly limited, rolling element can be spherical, also may be used
To be other shapes, depending on actual conditions.
Further, in the first point of contact, the first rolling element 3 connects with third raceway for the first rolling element 3 and the first raceway contact
Touch in third point of contact, the second rolling element 4 and the second raceway contact in the second point of contact, the second rolling element 4 and the 4th raceway contact in
4th point of contact, it should be noted that rolling element includes the first rolling element 3 and the second rolling element 4, contact of the rolling element with raceway
Be not limited to only there are one point contact, when contact position is camber line or cambered surface, above-mentioned each point of contact represent rolling element with
The central point of raceway contact position.
The line at the first point of contact and third point of contact is the first line, and the line at the second point of contact and the 4th point of contact connects for second
Line, the first line and the second line form included angle A with the radial direction of bearing, and size is identical, wherein and the included angle A is smaller,
The axial control force of bearing is smaller, rotating speed is faster；The included angle A is bigger, and the axial control force of bearing is bigger, rotating speed is slower.In order to
So that the axial control force of bearing and the performance of rotating speed are preferable, the first line and the second line can neither it is vertical can not be parallel,
I.e. included angle A is greater than zero degree and is less than 90 degree, such as 15 °, 30 °, 45 °.Mentioned " radial direction ", which refers to, planar passes through axis
The direction of heart line as passes through the direction of the arbitrary diameter of bearing centre axis.
In order to which bearing can do eccentric rotary, the central shaft of the endoporus of inner ring 2 will deviate the center of the outer circumference surface of inner ring 2
Axis, i.e. inner ring 2 are not symmetrical structures, the endoporus of inner ring 2 close to inner ring 2 marginal position and keep certain distance with edge.
In this way, eccentric stiffener can be simplified, bearing and eccentric shaft need not be used cooperatively to the function of can be realized as eccentric rotary, from
And reduce the manufacturing cost of eccentric stiffener.
So set, the double-row bearing that present embodiment provides, passes through rolling element and 1 contact point of Internal and external cycle
Line is with being formed radially included angle A, to improve the axial control force of bearing, by the way that the endoporus of inner ring 2 is provided off hole
To realize eccentric rotary, while ensureing quick rotation, axial control force had not only been improved, but also has realized eccentric shaft rotation
Function.
In this embodiment, the cross-sectional shape of the endoporus of inner ring 2 is circle, in this way, being conducive to the processing and manufacturing of bearing, directly
It connects and drills to inner ring 2, to save cost and manpower.Since the cross section of axis is mostly circle, such bearing energy
It is enough to be used with most of axis connection, improve practicability and economic benefit.
Further, the endoporus of inner ring 2 is provided with for the keyway 7 with axis connection, is arranged on the keyway 7 and axis of bearing
Keyway 7 matches, in such manner, it is possible to make the connection of axis and bearing more consolidation, can also prevent axis from being sent out in contact position with bearing
Raw opposite sliding.
In another embodiment, the cross-sectional shape of the endoporus of inner ring 2 is regular hexagon, so, it is possible to prevent axis with
In contact position opposite sliding occurs for bearing, eliminates the structure of keyway 7, can also be connected with the axis of special regular hexagonal prism type
Connect, produce endoporus of different shapes for different axis, a greater variety of connection types may be implemented, wherein inner ring 2 it is interior
The cross-sectional shape in hole can also be regular pentagon, regular quadrangle etc..
For the relative position relation of the first line and the second line, according to the direction of load, there are three types of arrangement modes：Phase
Back of the body arrangement, arranged opposite is arranged in parallel, wherein the mode rigidity arranged opposite to each other is maximum.Therefore, in the preferred embodiment of the present embodiment
In, the spacing for being smaller than third raceway and the 4th raceway of the first raceway and the second raceway, i.e., opposite arrangement.Certainly, at it
Can also be arranged opposite or arranged in parallel in his embodiment.
Preferably, ranging from 25 °~35 ° of the included angle A that the first line and the radial direction of the second line and bearing are formed, folder
Angle A is smaller, and the axial control force of bearing is smaller, rotating speed is faster, and the included angle A is bigger, the axial control force of bearing is bigger, rotating speed more
Slowly, the ranging from axial control force of the included angle A chosen here and the preferable section of rotating speed.In such manner, it is possible to ensure the axial control of bearing
Power processed and rotating speed can be embodied preferably.
In the preferred embodiment of this implementation, which further includes retainer 5, and retainer 5 is arranged in outer ring 1
Between inner ring 2, and rolling element is arranged in the pocket hole of retainer 5.Wherein, retainer 5 can by rolling element portion envelops, and
So that two adjacent rolling elements is kept certain spacing, will not collide, to increase the rigidity of the double-row bearing.
In bearing working, since sliding friction can cause bearing heating and abrasion, so the material of retainer 5 will have
Certain intensity, will also there is that good thermal conductivity, friction coefficient be small, the characteristics such as wear-resisting；It can be bearing in the prior art
Material used in retainer 5 can also select the materials such as mild steel, bakelite, bronze or brass, with specific reference to the need of user
It asks and depends on the circumstances.
In another embodiment, the first raceway is provided with the first lubrication groove at the first point of contact, and the second raceway is second
The second lubrication groove is provided at point of contact.When double-row bearing operates, rolling element rotates in raceway, and lubrication groove can roll
The effect for increasing lubrication between kinetoplast and raceway makes the double-row bearing operate more smooth, in addition, the profit in lubrication groove
Lubricating oil can also play the function of cooling and slagging-off, to increase the service life of the double-row bearing.
In the preferred embodiment of the present embodiment, which further includes that have can will be close between inner ring 2 and outer ring 1
The sealing cover 6 of envelope, sealing cover 6 is fixed on the both ends of bearing under the action of clamp spring.In this way, sealing cover 6 can not only prevent outside
The dust impurity on boundary enters inside raceway, so that influencing the operating of bearing, additionally it is possible to prevent the greasing substance inside raceway
Outflow, so that influencing lubricant effect.
Further, it is provided with oil filler point on the sealing cover 6, check valve is provided at the aperture of oil filler point.Due to close
Capping 6, inner ring 2 and outer ring 1 constitute more closed space, when adding lubricant to Bearing inner, need to open up oiling
Check valve is arranged in hole, oil filler point, can inject lubricant without allowing internal lubricant stream by oil filler point in the external world in this way
Go out.
In conjunction with above-mentioned each embodiment and its preferred embodiment, this double-row bearing is specifically described.The biserial is rolled
Dynamic bearing includes inner ring 2, outer ring 1, the first rolling element 3, the second rolling element 4 and retainer 5, and retainer 5 is arranged in 1 He of outer ring
Between inner ring 2, and the first rolling element 3 and the second rolling element 4 are arranged in the pocket hole of retainer 5, the inner peripheral surface in outer ring 1
It is arranged in parallel with the first raceway and the second raceway, third raceway and the 4th raceway are arranged in parallel in the outer circumference surface of inner ring 2, the
The spacing for being smaller than third raceway and the 4th raceway of one raceway and the second raceway.First rolling element 3 and the first raceway contact
In the first point of contact, the first rolling element 3 and third raceway contact are in third point of contact, the second rolling element 4 and the second raceway contact in the
Two point of contacts, the second rolling element 4 and the 4th raceway contact connect in the 4th point of contact, the line at the first point of contact and third point of contact for first
Line, the line at the second point of contact and the 4th point of contact are the second line, the first line and the second line with the radial direction shape of bearing
At included angle A, the central shaft of the endoporus of inner ring 2 deviates the central shaft of the outer circumference surface of inner ring 2, the cross section shape of the endoporus of inner ring 2
Shape is circle, and the endoporus of inner ring 2 is provided with for the keyway 7 with axis connection.So set, the double-row bearing is ensureing
While quick rotation, axial control force had not only been improved, but also has realized the function of eccentric shaft rotation.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (10)
1. a kind of double-row bearing, which is characterized in that include inner ring (2), outer ring (1), multiple first rolling elements (3) and more
The inner peripheral surface of a second rolling element (4), the outer ring (1) is arranged in parallel with the first raceway and the second raceway, the inner ring (2)
Outer circumference surface be arranged in parallel with third raceway and the 4th raceway；First rolling element (3) passes through the first point of contact and described the
One raceway contact, by third point of contact and the third raceway contact, second rolling element (4) by the second point of contact with it is described
Second raceway contact passes through the 4th point of contact and the 4th raceway contact, first point of contact and the first of the third point of contact
Line, second point of contact and second line at the 4th point of contact are with being formed radially angle (A), first line and institute
The second line is stated both to be neither perpendicular to nor parallel to；The central shaft of the endoporus of the inner ring (2) deviates the outer circumference surface of the inner ring (2)
Central shaft.
2. double-row bearing as described in claim 1, which is characterized in that the cross-sectional shape of the endoporus of the inner ring (2)
For circle.
3. double-row bearing as claimed in claim 2, which is characterized in that the endoporus of the inner ring (2) be provided with for
The keyway (7) of axis connection.
4. double-row bearing as described in claim 1, which is characterized in that the cross-sectional shape of the endoporus of the inner ring (2)
For regular hexagon.
5. double-row bearing as described in claim 1, which is characterized in that between first raceway and second raceway
Away from the spacing less than the third raceway and the 4th raceway.
6. double-row bearing as described in claim 1, which is characterized in that ranging from 25 °~35 ° of the angle (A).
7. double-row bearing as described in claim 1, which is characterized in that further include retainer (5), the retainer (5)
It is arranged between the outer ring (1) and the inner ring (2), first rolling element (3) and second rolling element (4) are respectively provided with
Inside the pocket hole of the retainer (5).
8. double-row bearing as described in claim 1, which is characterized in that first raceway is provided with the first lubrication groove,
Second raceway is provided with the second lubrication groove, and first lubrication groove is located at first rolling element (3) and is rolled with described first
The contact position in road, second lubrication groove are located at the contact position of second rolling element (4) and second raceway.
9. double-row bearing as described in claim 1, which is characterized in that further include that have can be by the inner ring (2) and institute
The sealing cover (6) sealed between outer ring (1) is stated, the sealing cover (6) is fixed on the both ends of bearing body by clamp spring.
10. double-row bearing as claimed in claim 9, which is characterized in that it is provided with oil filler point on the sealing cover (6),
It is provided with check valve at the aperture of the oil filler point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870404.1U CN207830362U (en) | 2017-12-27 | 2017-12-27 | A kind of double-row bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721870404.1U CN207830362U (en) | 2017-12-27 | 2017-12-27 | A kind of double-row bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830362U true CN207830362U (en) | 2018-09-07 |
Family
ID=63390009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721870404.1U Active CN207830362U (en) | 2017-12-27 | 2017-12-27 | A kind of double-row bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830362U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340251A (en) * | 2018-12-13 | 2019-02-15 | 武汉华星光电半导体显示技术有限公司 | Bearing and etching machine and engraving method |
| CN109488682A (en) * | 2019-01-03 | 2019-03-19 | 临清市海瑞轴承制造有限公司 | Robot arm bearing |
| CN110285145A (en) * | 2019-07-10 | 2019-09-27 | 无锡诚石轴承有限公司 | Bearing with eccentric inner hole |
-
2017
- 2017-12-27 CN CN201721870404.1U patent/CN207830362U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340251A (en) * | 2018-12-13 | 2019-02-15 | 武汉华星光电半导体显示技术有限公司 | Bearing and etching machine and engraving method |
| CN109488682A (en) * | 2019-01-03 | 2019-03-19 | 临清市海瑞轴承制造有限公司 | Robot arm bearing |
| CN110285145A (en) * | 2019-07-10 | 2019-09-27 | 无锡诚石轴承有限公司 | Bearing with eccentric inner hole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207830362U (en) | A kind of double-row bearing | |
| CN104956105B (en) | Multi-contact ball bearing | |
| CN201106634Y (en) | Ring-below lubrication type ultrahigh speed angular contact ball bearing | |
| CN111188832A (en) | Energy efficiency type tapered roller bearing | |
| CN100472079C (en) | Roller thrust bearing | |
| CN102239338A (en) | Inner race of a rolling bearing | |
| CN101586610A (en) | Conical roller bearing with low friction moment | |
| KR20210098633A (en) | A Rolling Bearing Having Variable Rated Capacity And Roller For Rolling Bearing | |
| CN207864418U (en) | Unilateral bearing | |
| US7934873B2 (en) | Tapered roller bearing | |
| CN202768629U (en) | Combined oscillating bearing | |
| CN205207422U (en) | Two -row ball bearing and contain gyro wheel of said two -row ball bearing | |
| CN108071683A (en) | Taper roll bearing and power transmission | |
| CN209414391U (en) | A kind of four-point contact ball | |
| CN203257890U (en) | Planar thrust bearing | |
| CN201137635Y (en) | Double row aligning bearing | |
| CN205841517U (en) | A kind of rolling element self-circulation type rolling bearing | |
| CN207333449U (en) | A kind of automatic aligning biserial deep groove ball bearing | |
| CN104763738A (en) | Self-lubricating knuckle bearing | |
| CN105805167A (en) | Novel bearing with inner-ring conical ball track and outer-ring arc-shaped ball track | |
| CN200955550Y (en) | Differential self-lubrication sliding bearing | |
| CN206816670U (en) | Strengthened heat dissipation type angular contact ball bearing | |
| JP2001304273A (en) | Four-point contact ball bearing | |
| CN110410330A (en) | Crankshaft group, pump assembly, compressor, air conditioner | |
| CN217207331U (en) | Anticreep formula cell type bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |