CN116972070B - Three-row ball hub bearing for new energy automobile - Google Patents
Three-row ball hub bearing for new energy automobile Download PDFInfo
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- CN116972070B CN116972070B CN202311118362.6A CN202311118362A CN116972070B CN 116972070 B CN116972070 B CN 116972070B CN 202311118362 A CN202311118362 A CN 202311118362A CN 116972070 B CN116972070 B CN 116972070B
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- 238000009434 installation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 description 12
- 230000006872 improvement Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
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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
- F16C33/32—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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- 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
- F16C43/00—Assembling bearings
- F16C43/04—Assembling rolling-contact bearings
- F16C43/06—Placing rolling bodies in cages or bearings
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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 the technical field of hub bearings, and particularly discloses a three-row ball hub bearing for a new energy automobile, which comprises a large inner ring, a small inner ring, an outer ring and three rows of balls, wherein the three rows of balls are an inner side ball, a middle ball and an outer side ball in sequence along the axial direction, the inner side ball is positioned between the small inner ring and the outer ring, the outer side ball and the middle ball are both positioned between the large inner ring and the outer ring, and the middle ball forms a centripetal ball structure; the radius of the section of the outer circular arc roller path corresponding to the middle ball is larger than that of the middle ball, the radius of the section of the inner circular arc roller path corresponding to the middle ball is also larger than that of the middle ball, and the clearance fit of the centripetal ball structure formed by the middle ball is positive clearance. The invention increases the middle ball contacted with the rollaway nest line, so that the radial bearing capacity of the hub bearing is increased, the invention is suitable for high-speed rotation, not only improves the radial bearing capacity of the bearing, but also improves the use load of the whole vehicle on the premise of not changing the shape of the hub bearing.
Description
Technical Field
The invention relates to the technical field of hub bearings, in particular to a three-row ball hub bearing for a new energy automobile.
Background
Hub bearings are currently used in a variety of industries, such as the automotive industry, rail transit, and the like.
The general hub bearing internal structure is two rows of balls, so that the current most automobile use conditions can be met, but with the continuous increase of new energy automobiles, the battery capacity of the new energy automobiles as a power source is also continuously increased, and the battery capacity is increased, so that the weight of the battery is greatly increased, the load of the whole automobile is also increased, and the current hub bearing of two rows of steel balls cannot meet the use requirement for the electric new energy automobiles with high requirements on the endurance mileage.
In the prior art, a three-row roller four-point contact type hub bearing with a patent publication number of CN202991851U discloses that a hub bearing with three rows of balls is arranged on a hub bearing for an automobile, and the bearing capacity of the hub bearing with three rows of balls can be improved theoretically, but the hub bearing has very high requirements on manufacturing precision of a small inner ring and a large inner ring because an inner raceway of a middle row of balls is respectively provided with a large inner ring and a small inner ring, so that the manufacturing cost is greatly improved, and the inner raceway condition of the middle row of balls can be changed because of spin riveting after the spin riveting is finished, so that two parts of the inner raceways of the middle row of balls cannot form a finished circular arc raceway, and further the performance problems of noise, rotation clamping stagnation, high temperature and the like are caused in the use process of the hub bearing, and the improvement of the rotating speed of the hub bearing and the extension of the service life are greatly influenced.
Disclosure of Invention
The invention aims to provide a three-row ball hub bearing for a new energy automobile, which aims to solve the problems that the existing three-row ball hub bearing has high requirements on the manufacturing precision of parts and the usability of the hub bearing cannot be ensured.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The utility model provides a three-row ball wheel hub bearing for new energy automobile, includes big inner circle, little inner circle, outer lane and three rows of balls, and three rows of balls are inboard ball, middle part ball and outside ball along the axial in proper order, and inboard ball is located between little inner circle and the outer lane, and outside ball and middle part ball all are located between big inner circle and the outer lane, and middle part ball forms the centripetal ball structure.
Preferably, as an improvement, the radius of the section of the outer circular arc roller path corresponding to the middle ball is larger than that of the middle ball, the radius of the section of the inner circular arc roller path corresponding to the middle ball is also larger than that of the middle ball, and the clearance fit of the centripetal ball structure formed by the middle ball is positive clearance.
Preferably, as a modification, the play of the centripetal ball structure formed by the middle ball is set to be set C3 or set C4.
Preferably, as an improvement, the large inner ring fixes the small inner ring in a spin riveting mode, and the play of the radial ball structure is C3 group or C4 group, which means the play before spin riveting of the large inner ring.
Preferably, as an improvement, the periphery of the large inner ring is provided with an adjacent mounting surface and a guide surface, the guide surface is obliquely arranged, one end of the guide surface with the large outer diameter is connected with the inner ring circular arc raceway, the mounting surface is positioned between the small inner ring and the guide surface, the minimum distance h 1 between the mounting surface and the groove top of the outer ring circular arc raceway is larger than the diameter of the middle ball, the minimum distance h 2 between the guide surface and the groove top of the outer ring circular arc raceway is smaller than the diameter of the middle ball, and the difference between the h 2 and the diameter of the middle ball is smaller than the deformation amount which can be generated when the middle ball is pressed.
Preferably, as an improvement, contact angles are formed between the inner side ball and the corresponding rollaway nest, between the outer side ball and the corresponding rollaway nest, positive play is formed between the inner side ball and the outer side ball before the large inner ring is screwed and riveted, and negative play is formed between the inner side ball and the corresponding rollaway nest after the large inner ring is screwed and riveted.
Preferably, as a modification, the contact angle ranges from 25 ° to 40 °.
Preferably, as a modification, the contact angle is 35 ° to 40 °.
Preferably, as an improvement, the range of the flange coefficients of the inner side ball, the inner ring and the outer ring is 0.75-0.81, and the range of the flange coefficients of the outer side ball, the inner ring and the outer ring is 0.8-0.9.
Preferably, as an improvement, the device further comprises a cage, each row of balls comprising a plurality of rollers, the cage being adapted to separate adjacent rollers.
The principle and the advantages of the scheme are as follows:
1. When the hub bearing is used, the outer ring is fixed, the inner ring (the whole formed by the large inner ring and the small inner ring) rotates, the three rows of balls rotate along with the inner ring, and the balls rotate, as the middle ball of the centripetal ball structure is additionally arranged, the radius of the middle ball is smaller than the section radius of the corresponding rollaway nest, so that the contact between the middle ball and the corresponding rollaway nest is in line contact, the corresponding rollaway nest of the middle ball is in arc shape, the radial bearing capacity of the hub bearing is greatly improved, meanwhile, as the contact between the middle ball and the large inner ring or the outer ring is in line contact, the play of C3 or C4 groups is selected, the rotation moment of the hub bearing is not increased due to the increase of the middle ball of the hub bearing, and the bearing capacity of the hub bearing is improved on the premise that the axial force can be born is not changed, and the use load of the whole vehicle is further improved; in addition, in the scheme, the rollaway nest where the middle ball is located is a complete rollaway nest, the increase of the middle ball can not influence the improvement of the manufacturing precision of the hub bearing parts, the problem that in the prior art, the noise, the clamping stagnation, the high temperature and other performances of the hub bearing are caused by abnormal operation of the middle ball due to the fact that the left part and the right part of the rollaway nest are misplaced due to the fact that two parts of the inner ring are assembled into one rollaway nest can not exist, and meanwhile, due to the design of the complete rollaway nest where the middle ball is located and positive play, the hub bearing can achieve higher rotating speed under higher radial load.
2. Compared with the standard clearance of a conventional centripetal ball structure, the C3 group or the C4 group is adopted, the clearance between the middle ball and the corresponding raceway is larger, the middle ball is convenient to install between the large inner ring and the outer ring before spin riveting of the large inner ring, meanwhile, the whole large inner ring generates a large-amplitude structural shape change except for the spin riveting position after spin riveting, other parts of the large inner ring also have slight deformation, the spin riveting process of the large inner ring transmits force to the outer ring through the small inner ring and the inner side ball, so that the outer ring generates slight displacement, and the displacement causes slight dislocation of the upper raceway and the lower raceway where the middle ball is located, so that the clearance between the middle ball and the corresponding raceway is reduced, for example, the original C3 group or C4 group clearance is changed into the C2 group or the CN group (standard clearance), and the bearing capacity of the middle ball is improved under the conditions that the rotation flexibility and the rotation moment of the hub bearing are not influenced, and the bearing capacity of the hub bearing is greatly improved.
3. According to the invention, through the arrangement of the mounting surface and the inclined guide surface, when the middle ball is mounted, the middle ball is firstly mounted in the outer ring circular arc raceway, then the outer ring with the middle ball is sequentially pressed into the inner ring circular arc raceway of the large inner ring through the mounting surface and the guide surface, in the pressing process, the interval h 1 ensures that the middle ball cannot scratch the inner ring when passing through the mounting surface, the mounting surface cannot be damaged, the inclined guide surface is arranged, and the requirement of the interval h 2 ensures that the inner ring circular arc raceway can be formed, so that the normal use of the hub bearing in the following scheme is ensured, and meanwhile, the middle ball can be pressed into the inner ring circular arc raceway, and the middle ball in the scheme can be rapidly and smoothly mounted and cannot influence the large inner ring in performance.
4. According to the hub bearing designed by the invention, through selecting the play of the inner side ball and the outer side ball with the contact angle before spin riveting as positive play, on one hand, the installation difficulty of the inner side ball and the outer side ball is reduced, and on the other hand, the extrusion force applied to the small inner ring is transmitted to the outer ring by utilizing the extrusion of the large inner ring to the small inner ring during spin riveting, so that the outer ring generates slight axial displacement, the play of the rollaway where the inner side ball/the outer side ball is positioned is reduced, and after spin riveting is completed, the inner side ball/the outer side ball in angular contact and the corresponding rollaway are in negative play, so that the optimal load capacity of the inner side ball and the outer side ball is realized.
5. The friction moment of the hub bearing is small, the bearing capacity is large, and the hub bearing has extremely high service life while having climbing rate and contact stress under limited size by selecting the contact angle and the flange coefficient.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a portion a corresponding to a middle ball according to an embodiment of the present invention.
Fig. 3 is an enlarged view of a portion B corresponding to the inner ball according to the embodiment of the present invention.
Fig. 4 is an enlarged view of a portion C corresponding to the outer ball according to the embodiment of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the ball bearing comprises an outer ring 1, a large inner ring 2, a mounting surface 21, a guide surface 22, a small inner ring 3, an inner ball 4, an outer ball 5, a middle ball 6, a retainer 7, a seal ring framework 8, seal ring rubber 9, an outer ring circular arc-shaped roller path 10, an inner ring circular arc-shaped roller path 11, a first row ball outer ring roller path 12, a first row ball inner ring roller path 13, a second row ball outer ring roller path 14 and a second row ball inner ring roller path 15.
An embodiment substantially as shown in figures 1 to 4 of the accompanying drawings.
The utility model provides a three-row ball wheel hub bearing for new energy automobile, including outer lane 1, big inner circle 2, little inner circle 3, inboard ball 4 (i.e. first row ball), outside ball 5 (i.e. second row ball) and middle part ball 6 (i.e. third row ball), big inner circle 2 wears to locate in outer lane 1, little inner circle 3 can adopt spin riveting mode fixed connection with big inner circle 2, big inner circle 2 and little inner circle 3 wear to locate in outer lane 1, every row roller quantity is three at least, in the raceway between outer lane 1 and the big inner circle 2 of axle is installed respectively to inboard ball 4, outside ball 5 and middle part ball 6, middle part ball 6 is located between inboard ball 4 and the outside ball 5, middle part ball 6 is the steel ball.
Further, referring to fig. 1 and 2, an outer ring arc-shaped raceway 10 corresponding to the middle ball 6 is provided on the inner circumferential surface of the outer ring 1; the outer circumferential surface of the large inner ring 2 is provided with an inner ring circular arc-shaped rollaway nest 11 corresponding to the middle ball 6; the middle ball 6 is arranged in the circular arc rollaway nest of the large inner ring 2 and the outer ring 1, and the middle ball 6 and the large inner ring 2 and the outer ring 1 are matched to form a centripetal ball structure.
Further, referring to fig. 1 and 2, the radius of the section of the outer circular arc raceway 10 corresponding to the middle ball 6 is larger than the radius of the middle ball 6, the radius of the section of the inner circular arc raceway 11 corresponding to the middle ball 6 is also larger than the radius of the middle ball 6, the play fit of the radial ball structure formed by the middle ball 6 is positive play, and the play of the radial ball structure is C3 group or C4 group before the large inner ring is spin-riveted.
The periphery of the large inner ring 2 is provided with an adjacent mounting surface 21 and a guide surface 22, the guide surface 22 is obliquely arranged, one end of the guide surface 22 with a large outer diameter is connected with the inner ring circular arc raceway 11, the mounting surface 21 is positioned between the small inner ring 3 and the guide surface 22, the minimum distance h 1 between the mounting surface 21 and the groove top of the outer ring circular arc raceway 10 is larger than the diameter of the middle ball 6, the minimum distance h 2 between the guide surface 22 and the groove top of the outer ring circular arc raceway 10 is smaller than the diameter of the middle ball 6, and the difference value between the h 2 and the diameter of the middle ball is smaller than the deformation amount which can be generated when the middle ball 6 is pressed.
Further, referring to fig. 3 and 4, an included angle is formed between the inner ball 4 and the first row of ball outer ring raceways 12 and the first row of ball inner ring raceways 13, and an included angle is formed between the outer ball 5 and the second row of ball outer ring raceways 14 and the second row of ball inner ring raceways 15, the two included angles have the same numerical value, and are both called contact angles a, and the angle range of the contact angles a is 25 ° -40 °.
The inner side ball 4 and the outer side ball 5 are in positive clearance between the corresponding rollaway nest and the large inner ring 2 before spin riveting, the positive clearance range is 0.01 mm-0.02 mm, and the negative clearance range is (-0.035 mm) to (-0.005 mm) between the inner side ball 4 and the outer side ball 5 and the corresponding rollaway nest after spin riveting of the large inner ring is completed.
Further, in connection with fig. 1, the hub bearing further comprises a cage 7, the cage 7 being in contact with the balls and being located between the outer ring 1 and the inner ring of the bearing.
In the present embodiment, the inner ball 4, the outer ball 5 and the middle ball 6 are respectively mounted in the bearings through respective corresponding retainers 7 (the retainers of the middle ball 6 are not shown in the drawing), and the running of the balls is made more stable by the retainers 7 while the stability of the bearing structure is improved.
Further, in combination with fig. 1, the hub bearing structure of this embodiment further includes a sealing ring, the sealing ring is disposed between the outer ring 1 and the large inner ring 2, the sealing ring has a sealing ring skeleton 8 and a sealing ring rubber 9, the sealing ring skeleton 8 and the sealing ring rubber 9 are fixedly connected, the sealing ring skeleton 8 is fixedly installed on the outer ring 1, the sealing ring rubber 9 is in friction contact with the inner ring 2, the sealing ring is used for improving the tightness of the hub bearing and preventing external dust from entering, in the hub bearing, the normal use of the hub bearing is affected, the sealing ring rubber 9 is stably installed in the hub bearing through the sealing ring skeleton 8, and the stability of the hub bearing structure is improved.
According to the embodiment, through the design of the play of the centripetal ball structure formed by the middle ball 6, the outer ring 1 and the large inner ring 2 and the design of the mounting surface 21 and the guide surface of the large inner ring 2, the middle ball 6 can be smoothly pressed and assembled through the mounting surface 21 and the guide surface 22, the middle ball 6 can be ensured to be installed in the corresponding roller path, and after the hub bearing is riveted and formed, the play of the middle ball 6 is reduced, the integral bearing capacity of the hub bearing is improved, and the hub bearing still has the performances of flexible rotation and small rotation moment, so that the hub bearing in the embodiment is suitable for the condition of high-speed rotation, and the use requirement of a new energy automobile at high speed is met.
In addition, the play control of the inner side ball 4 and the outer side ball 5 before and after spin riveting is performed in the embodiment, so that the installation of the inner side ball 4 and the outer side ball 5 under positive play becomes simpler and faster, and under the negative play after riveting, the optimal design of the angular contact bearing structure formed by the inner side ball 4 and the outer side ball 5 is ensured, so that under the cooperation of the inner side ball 4, the outer side ball 5 and the middle ball 6, the bearing capacity of the hub bearing is greatly improved, the service life of the hub bearing is prolonged to more than 80 ten thousand kilometers, compared with the service life of a conventional double-row ball bearing of 40 ten thousand kilometers in the prior art, the service life of the hub bearing in the embodiment is doubled, and in the use process of the hub bearing, the conditions of clamping stagnation, abnormal sound, high temperature and the like of the middle row balls are avoided.
Example two
The second embodiment is a continued improvement based on the first embodiment, and the specific improvement is as follows:
in the embodiment, the angle range of the contact angle a is 35 degrees to 40 degrees, the range of the flange coefficients of the inner side ball, the inner ring and the outer ring is 0.75-0.81, and the range of the flange coefficients of the outer side ball, the inner ring and the outer ring is 0.8-0.9.
The effects of different contact angles a and corresponding edge dams are shown in the following table.
List one
In the field, because the outside ball is close to the flange of the hub bearing, the flange is fixedly connected with the automobile tire, the contact stress born by the outside ball is far greater than the contact stress of the inside ball, the contact stress of the outside ball and the outer ring of the hub bearing in the field is generally between 3600Mpa and 3800Mpa, the maximum contact stress born by the outside ball of the hub bearing is basically not more than 3500Mpa through the design of the contact stress angle and the flange coefficient, and the span between the inside ball and the outside ball on the hub bearing is between 69 mm and 79mm, so that the design and installation of the hub bearing in the embodiment can be realized within the interface size range limited by an automobile.
In addition, as shown in the data in table one, in the present embodiment, when the contact angle is 35 ° and 36 °, the friction moment is only 0.395n·m and 0.549n·m respectively, which is favorable for the condition that the hub bearing is adapted to high-speed rotation, and under this parameter, the hub bearing of the present embodiment can also be ensured to have extremely high service life and dynamic load exceeding 75KN, that is, the hub bearing of the present embodiment can be ensured to not only meet the design requirement under the limited size of the existing automobile interface, but also meet the assembly process requirement of the hub bearing itself, and further realize the substantial improvement of load and the substantial extension of service life.
The foregoing is merely exemplary of the present application, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present application, and these should also be regarded as the protection scope of the present application, which does not affect the effect of the implementation of the present application and the practical applicability of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. The utility model provides a three rows of ball wheel hub bearings for new energy automobile, includes big inner circle, little inner circle, outer lane and three rows of balls, and three rows of balls are inboard ball, middle part ball and outside ball along the axial in proper order, and inboard ball is located between little inner circle and the outer lane, its characterized in that: the outer side ball and the middle ball are positioned between the large inner ring and the outer ring, and the middle ball forms a centripetal ball structure;
The section radius of the outer ring circular arc roller path corresponding to the middle ball is larger than the radius of the middle ball, the section radius of the inner ring circular arc roller path corresponding to the middle ball is also larger than the radius of the middle ball, and the clearance fit of the centripetal ball structure formed by the middle ball is positive clearance;
the large inner ring is fixed with the small inner ring in a spin riveting mode, and the play of the radial ball structure is C3 group or C4 group before spin riveting of the large inner ring;
Contact angles are formed between the inner side ball and the corresponding rollaway nest and between the outer side ball and the corresponding rollaway nest, positive clearance is formed between the inner side ball and the outer side ball before spin riveting of the large inner ring and between the inner side ball and the corresponding rollaway nest, and negative clearance is formed between the inner side ball and the outer side ball and between the inner side ball and the corresponding rollaway nest after spin riveting of the large inner ring is completed; the contact angle is 35 ° to 40 °.
2. The three-row ball hub bearing for a new energy vehicle of claim 1, wherein: the periphery of the large inner ring is provided with an adjacent installation surface and a guide surface, the guide surface is obliquely arranged, one end of the guide surface with the large outer diameter is connected with the inner ring circular arc roller path, the installation surface is positioned between the small inner ring and the guide surface, the minimum distance h 1 between the installation surface and the groove top of the outer ring circular arc roller path is larger than the diameter of the middle ball, the minimum distance h 2 between the guide surface and the groove top of the outer ring circular arc roller path is smaller than the diameter of the middle ball, and the difference value between the h 2 and the diameter of the middle ball is smaller than the deformation quantity which can be generated when the middle ball is pressed.
3. A three row ball hub bearing for a new energy vehicle according to any one of claims 1-2, wherein: the range of the flange coefficients of the inner side ball, the inner ring and the outer ring is 0.75-0.81, and the range of the flange coefficients of the outer side ball, the inner ring and the outer ring is 0.8-0.9.
4. A three row ball hub bearing for a new energy vehicle according to any one of claims 1-2, wherein: the cage further includes a plurality of rollers in each row of balls, the cage separating adjacent rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311118362.6A CN116972070B (en) | 2023-08-31 | 2023-08-31 | Three-row ball hub bearing for new energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311118362.6A CN116972070B (en) | 2023-08-31 | 2023-08-31 | Three-row ball hub bearing for new energy automobile |
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| CN116972070A CN116972070A (en) | 2023-10-31 |
| CN116972070B true CN116972070B (en) | 2024-05-14 |
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| JP2008032102A (en) * | 2006-07-28 | 2008-02-14 | Ntn Corp | Bearing device for wheel |
| CN102459935A (en) * | 2009-06-18 | 2012-05-16 | Ntn株式会社 | Wheel bearing |
| JP2014084907A (en) * | 2012-10-22 | 2014-05-12 | Nsk Ltd | Hub unit bearing |
| JP2014206266A (en) * | 2013-03-18 | 2014-10-30 | 株式会社ジェイテクト | Bearing device for wheel |
| CN204312549U (en) * | 2014-12-12 | 2015-05-06 | 上海人本汽车轴承有限公司 | A kind of heavily loaded hub bearing |
| CN206958085U (en) * | 2017-04-27 | 2018-02-02 | 苏州睿昕汽车配件有限公司 | A kind of long-life automobile hub unit |
| DE102017125910A1 (en) * | 2017-11-07 | 2019-05-09 | Schaeffler Technologies AG & Co. KG | Three-row angular contact ball bearing |
| CN110271367A (en) * | 2019-06-12 | 2019-09-24 | 浙江万向精工有限公司 | A kind of non-driven circular cone hub unit of lightweight |
| CN112576618A (en) * | 2020-12-24 | 2021-03-30 | 浙江万向精工有限公司 | Wheel hub bearing unit with three rows of rolling bodies |
| JP2022138991A (en) * | 2021-03-11 | 2022-09-26 | Ntn株式会社 | Method of assembling outer ring separation type angular ball bearing |
| CN116557417A (en) * | 2023-05-13 | 2023-08-08 | 重庆长江轴承股份有限公司 | Hub bearing structure of double-row angular contact ball one-row aligning roller for passenger car |
| CN116644611A (en) * | 2023-06-20 | 2023-08-25 | 重庆长江轴承股份有限公司 | Design method of hub bearing flange riveting structure and spin riveting tool design method |
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| CN116972070A (en) | 2023-10-31 |
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