CN108099491A - A kind of rear-wheel hub - Google Patents
A kind of rear-wheel hub Download PDFInfo
- Publication number
- CN108099491A CN108099491A CN201711460317.3A CN201711460317A CN108099491A CN 108099491 A CN108099491 A CN 108099491A CN 201711460317 A CN201711460317 A CN 201711460317A CN 108099491 A CN108099491 A CN 108099491A
- Authority
- CN
- China
- Prior art keywords
- wheel hub
- convex platform
- positioning convex
- hole
- pan portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/0073—Hubs characterised by sealing means
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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
- B60B27/0078—Hubs characterised by the fixation of bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/10—Reduction of
- B60B2900/111—Weight
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/50—Improvement of
- B60B2900/511—Sealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/50—Improvement of
- B60B2900/561—Lubrication
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
A kind of rear-wheel hub, including hub body, the inner shaft bearing bore being sequentially communicated is provided in hub body, circular hole, outer shaft bearing bore, inner bearing positioning convex platform is provided on the inner wall of circular hole, outer bearing positioning convex platform, annular groove is provided between inner bearing positioning convex platform and outer bearing positioning convex platform, inner bearing positioning convex platform, multiple groovings are both provided on outer bearing positioning convex platform, wheel hub pan portion and half shaft mounting hole outer ring are provided in hub body, No.1 curved surface is provided between the outer wall of hub body and the end face of wheel hub pan portion, multiple No.1 grooves are evenly arranged on No.1 curved surface, No. two curved surfaces are provided between wheel hub pan portion and half shaft mounting hole outer ring, multiple No. two grooves are provided on No. two curved surfaces.The design is not only light-weight, high lubricating effect, but also installs high with dismounting simplicity, structural strength.
Description
Technical field
The present invention relates to auto parts and components field more particularly to a kind of rear-wheel hubs, and being primarily adapted for use in reduces weight, improves profit
Sliding effect.
Background technology
At present in domestic commercial vehicle, rear axle power assembly is generally heavier compared to imported car, mainly existing automobile
Rear-wheel hub is commonly casting, uses QT500-7 materials mostly.Wheel hub structure feature is mostly to stretch, cut off structure, and groove is more,
Cast shaping process is complicated, and defect ware is more, and production cost is high, and hub weight is heavier, does not meet current lightweight trend.
Chinese patent, Authorization Notice No. CN205553773U, authorized announcement date are in September, 2016 utility model of 7 days
A kind of faceplate type automotive axle rear-wheel hub is disclosed, including hub body, small end axis is equipped with successively from front to back on hub body
Position, wheel hub pan portion and big-end bearing position are held, automobile axle shaft mounting hole outer ring is equipped at little-end bearing position, wheel hub pan portion is faceplate type
Structure is made of multiple valve blocks, and the end face of bolt hole and positioning convex platform, big-end bearing position and brake drum is equipped on each valve block
Transition coordinates, and brake drum is threadedly coupled by the bolt hole on valve block with hub body.Although the utility model can reduce cost,
But it still has following defect：The utility model only reduces wheel by the way that disc type rear-wheel hub is changed to faceplate type rear-wheel hub
Hub is conducted oneself with dignity, and drops weight limitation, and hub interior lubricates object space without storage so that lubricant effect is poor.
The content of the invention
The purpose of the present invention is overcome thing problems, such as weight in the prior art weight, the defects of lubricant effect is poor and, provide
A kind of light-weight, high lubricating effect rear-wheel hub.
In order to achieve the above object, the technical solution of the present invention is：A kind of rear-wheel hub, including hub body, the wheel
Inner shaft bearing bore and outer shaft bearing bore are provided in hub body, the inner shaft bearing bore is communicated with outer shaft bearing bore by circular hole, the circular hole
Inner wall on be located at the position of inner shaft bearing bore be provided with inner bearing positioning convex platform, be located on the inner wall of circular hole close to outer bearing
The position in hole is provided with outer bearing positioning convex platform, and annular is provided between the inner bearing positioning convex platform and outer bearing positioning convex platform
Groove.
Multiple No.1 groovings are provided on the inner bearing positioning convex platform, are provided on the outer bearing positioning convex platform multiple
No. two groovings.
Inner oil seal hole and outer oil seal hole are provided in the hub body, the inner oil seal hole is located at inner shaft bearing bore away from interior
The one side of bearing positioning convex platform, the outer oil seal hole are located at one side of the outer shaft bearing bore away from outer bearing positioning convex platform.
Lubricating oil or lubricating grease are provided in the annular groove.
Wheel hub pan portion and half shaft mounting hole outer ring are provided in the hub body, is evenly arranged in the wheel hub pan portion
Multiple bolts hole are provided with No.1 between the end face of outer wall and wheel hub pan portion away from half shaft mounting hole outer ring of the hub body
Curved surface is evenly arranged with multiple No.1 grooves on the No.1 curved surface, the No.1 groove between two neighboring bolt hole,
No.1 groove is spaced apart on No.1 curved surface.
Multiple half shaft mounting holes, the wheel hub pan portion and half shaft mounting hole are evenly arranged on the half shaft mounting hole outer ring
No. two curved surfaces are provided between outer ring, multiple No. two grooves are evenly arranged on No. two curved surfaces, No. two grooves are located at
Between two neighboring half shaft mounting hole, No. two grooves are spaced apart on No. two curved surfaces.
The wheel hub pan portion is evenly arranged with multiple positioning plates, the positioning plate on the end face of half shaft mounting hole outer ring
With the end face vertical connection of wheel hub pan portion, positioning plate is connected close to the one side of half shaft mounting hole outer ring with No. two curved surfaces.
Multiple brake drum positioning spiro pits are provided in the wheel hub pan portion.
It is located at the position on the outside of inner oil seal hole in the hub body and rack gear installation position is set.
Compared with prior art, beneficial effects of the present invention are：
1st, it is located in a kind of rear-wheel hub of the present invention on the inner wall of circular hole and the position of inner shaft bearing bore is provided with inner bearing convex
Platform is located on the inner wall of circular hole and the position of outer shaft bearing bore is provided with outer bearing positioning convex platform, inner bearing positioning convex platform with it is outer
Annular groove is provided between bearing positioning convex platform, adds annular groove, while rear-wheel hub dead weight is reduced, it is possible to increase trailing wheel
The oil storage of hub inner cavity or depot fat space, to improve bearing unit lubrication state.Therefore, light-weight, high lubricating effect of the invention.
2nd, multiple No.1 groovings, outer bearing positioning convex platform are provided on inner bearing positioning convex platform in a kind of rear-wheel hub of the present invention
On be provided with multiple No. two groovings, add grooving, bearing unit convenient disassembly can be made；Be provided in hub body inner oil seal hole with
Outer oil seal hole so that sealing effect is good；Wheel hub pan portion is evenly arranged with multiple positioning on the end face of half shaft mounting hole outer ring
Plate, positioning plate are connected close to the one side of half shaft mounting hole outer ring with No. two curved surfaces, and multiple brake drums are provided in wheel hub pan portion
Positioning spiro pit is located at the position on the outside of inner oil seal hole in hub body and sets rack gear installation position, and such design is not only pacified
Dress is easy, reliability is high and light-weight.Therefore, present invention installation and dismounting are easy, reliability is high, light-weight, sealing effect
It is good.
3rd, the outer wall of hub body and end face of the wheel hub pan portion away from half shaft mounting hole outer ring in a kind of rear-wheel hub of the present invention
Between be provided with No.1 curved surface, multiple No.1 grooves are evenly arranged on No.1 curved surface, No.1 groove is located at two neighboring bolt
Between hole, No.1 groove is spaced apart on No.1 curved surface, and No. two songs are provided between wheel hub pan portion and half shaft mounting hole outer ring
Face is evenly arranged with multiple No. two grooves on No. two curved surfaces, and for No. two grooves between two neighboring half shaft mounting hole, No. two recessed
Slot is spaced apart on No. two curved surfaces, adds curved surface respectively on the two sides of rear-wheel hub, and groove is opened up on curved surface so that is improved
Dead weight is reduced while rear-wheel hub structural strength.Therefore, structural strength of the present invention is high, light-weight.
Description of the drawings
Fig. 1 is a kind of structure diagram of rear-wheel hub of the present invention.
Fig. 2 is the structure diagram of No.1 curved surface in the present invention.
Fig. 3 is the structure diagram of No. two curved surfaces in the present invention.
In figure：Hub body 1, inner shaft bearing bore 11, outer shaft bearing bore 12, inner bearing positioning convex platform 13, outer bearing positioning convex platform
14th, annular groove 15,16, No. two groovings 17 of No.1 grooving, inner oil seal hole 18, outer oil seal hole 19, wheel hub pan portion 2, bolt hole 21,
41, No. two brake drum positioning spiro pit 22, half shaft mounting hole outer ring 3, half shaft mounting hole 31, No.1 curved surface 4, No.1 groove curved surfaces
5th, No. two grooves 51, positioning plate 6, gear ring installation position 7.
Specific embodiment
Below in conjunction with description of the drawings, the present invention is described in further detail with specific embodiment.
Referring to Fig. 1 to Fig. 3, including hub body 1, inner shaft bearing bore 11 is provided in the hub body 1 for a kind of rear-wheel hub
With outer shaft bearing bore 12, the inner shaft bearing bore 11 is communicated with outer shaft bearing bore 12 by circular hole, is located on the inner wall of the circular hole close
The position of inner shaft bearing bore 11 is provided with inner bearing positioning convex platform 13, is located on the inner wall of circular hole and is set close to the position of outer shaft bearing bore 12
Outer bearing positioning convex platform 14 is equipped with, annular groove is provided between the inner bearing positioning convex platform 13 and outer bearing positioning convex platform 14
15。
Multiple No.1 groovings 16 are provided on the inner bearing positioning convex platform 13, are set on the outer bearing positioning convex platform 14
There are multiple No. two groovings 17.
Inner oil seal hole 18 and outer oil seal hole 19 are provided in the hub body 1, the inner oil seal hole 18 is located at inner bearing
One side of the hole 11 away from inner bearing positioning convex platform 13, the outer oil seal hole 19 are located at outer shaft bearing bore 12 away from outer bearing positioning convex platform
14 one side.
Lubricating oil or lubricating grease are provided in the annular groove 15.
2 and half shaft mounting hole outer ring 3 of wheel hub pan portion is provided in the hub body 1, is uniformly set in the wheel hub pan portion 2
Multiple bolts hole 21 are equipped with, between the end face of outer wall and wheel hub pan portion 2 away from half shaft mounting hole outer ring 3 of the hub body 1
No.1 curved surface 4 is provided with, multiple No.1 grooves 41 are evenly arranged on the No.1 curved surface 4, the No.1 groove 41 is located at phase
Between adjacent two bolts hole 21, No.1 groove 41 is spaced apart on No.1 curved surface 4.
Multiple half shaft mounting holes 31 are evenly arranged on the half shaft mounting hole outer ring 3, the wheel hub pan portion 2 is pacified with semiaxis
Dress is provided with No. two curved surfaces 5 between hole outer ring 3, is evenly arranged with multiple No. two grooves 51 on No. two curved surfaces 5, described No. two
Between two neighboring half shaft mounting hole 31, No. two grooves 51 are spaced apart groove 51 on No. two curved surfaces 5.
The wheel hub pan portion 2 is evenly arranged with multiple positioning plates 6 on the end face of half shaft mounting hole outer ring 3, described fixed
Position plate 6 and the end face vertical connection of wheel hub pan portion 2, positioning plate 6 is close to the one side of half shaft mounting hole outer ring 3 and No. two 5 phases of curved surface
Connection.
Multiple brake drum positioning spiro pits 22 are provided in the wheel hub pan portion 2.
The position for being located at 18 outside of inner oil seal hole in the hub body 1 sets rack gear installation position 7.
The principle of the present invention is described as follows：
A kind of lightweight rear-wheel hub of the design, lightweight rear-wheel hub replace dislocation type large curved surface molding structure, bearing using groove
Axially position boss increases groove structure, and suitably reduces wheel installation positioning spigot（Positioning plate）Thickness and quantity, full
On the premise of sufficient strength reliability, scheme, is braked, intensity promotes 9.5%, 3.1% respectively under steering situation, list compared with prior art
A wheel hub loss of weight 2kg, 6*4 tractor loss of weight 8kg, cost reduce by 9 yuan/part.
For lightweight rear-wheel hub by changing feature structure, i.e. obverse and reverse sides remove material, groove by 5 grooves respectively
Alternately dislocation forms large curved surface molding structure so that entire wheel hub uniform wall thickness；Change wheel installation positioning spigot wall thickness and
Quantity reduces hub weight；The inside and outside bearing axial direction positioning convex platform processing groove of wheel hub, while loss of weight, it is possible to increase in wheel hub
Chamber storage oil/grease space, improves bearing unit lubrication state；Bearing axial direction positioning convex platform distinguishes two groovings of milling, can make bearing
Unit disassembling is convenient.
The design rear-wheel hub replaces dislocation type large curved surface structure using groove, light-weight, casting technique is simple, at low cost；
Bearing axial direction positioning convex platform processes groove, and loss of weight simultaneously increases storage oil/grease space, improves bearing lubrication；Bearing axial direction positioning convex platform
Process grooving, loss of weight, bearing unit convenient disassembly.
Embodiment 1：
Referring to Fig. 1 to Fig. 3, a kind of rear-wheel hub, including hub body 1, be provided in the hub body 1 inner shaft bearing bore 11 with it is outer
Bearing hole 12, the inner shaft bearing bore 11 are communicated with outer shaft bearing bore 12 by circular hole, are located on the inner wall of the circular hole close to inner shaft
The position of bearing bore 11 is provided with inner bearing positioning convex platform 13, is located on the inner wall of circular hole and is provided with close to the position of outer shaft bearing bore 12
Outer bearing positioning convex platform 14 is provided with annular groove 15 between the inner bearing positioning convex platform 13 and outer bearing positioning convex platform 14；
Multiple No.1 groovings 16 are provided on the inner bearing positioning convex platform 13, multiple two are provided on the outer bearing positioning convex platform 14
Number grooving 17；Inner oil seal hole 18 and outer oil seal hole 19 are provided in the hub body 1, the inner oil seal hole 18 is located at inner bearing
One side of the hole 11 away from inner bearing positioning convex platform 13, the outer oil seal hole 19 are located at outer shaft bearing bore 12 away from outer bearing positioning convex platform
14 one side；Lubricating oil or lubricating grease are provided in the annular groove 15；It is located at inner oil seal hole 18 in the hub body 1
The position in outside sets rack gear installation position 7.
Embodiment 2：
Substance with embodiment 1, the difference is that：
Referring to Fig. 1 to Fig. 3,2 and half shaft mounting hole outer ring 3 of wheel hub pan portion, the wheel hub pan portion are provided in the hub body 1
Multiple bolts hole 21 are evenly arranged on 2, the outer wall and wheel hub pan portion 2 of the hub body 1 are away from half shaft mounting hole outer ring 3
No.1 curved surface 4 is provided between end face, multiple No.1 grooves 41, the No.1 groove are evenly arranged on the No.1 curved surface 4
41 between two neighboring bolt hole 21, and No.1 groove 41 is spaced apart on No.1 curved surface 4；The half shaft mounting hole outer ring
Multiple half shaft mounting holes 31 are evenly arranged on 3, No. two songs are provided between the 2 and half shaft mounting hole outer ring 3 of wheel hub pan portion
Face 5, multiple No. two grooves 51 are evenly arranged on No. two curved surfaces 5, and No. two grooves 51 are located at two neighboring semiaxis peace
Between filling hole 31, No. two grooves 51 are spaced apart on No. two curved surfaces 5；The wheel hub pan portion 2 is close to half shaft mounting hole outer ring 3
Multiple positioning plates 6 are evenly arranged on end face, the positioning plate 6 and the end face vertical connection of wheel hub pan portion 2, positioning plate 6 are close
The one side of half shaft mounting hole outer ring 3 is connected with No. two curved surfaces 5；Multiple brake drum positioning spiral shells are provided in the wheel hub pan portion 2
Pit 22.
Claims (9)
1. a kind of rear-wheel hub, including hub body（1）, the hub body（1）Inside it is provided with inner shaft bearing bore（11）With outer bearing
Hole（12）, the inner shaft bearing bore（11）With outer shaft bearing bore（12）It is communicated by circular hole, it is characterised in that：On the inner wall of the circular hole
Positioned at close to inner shaft bearing bore（11）Position be provided with inner bearing positioning convex platform（13）, it is located at close to outer bearing on the inner wall of circular hole
Hole（12）Position be provided with outer bearing positioning convex platform（14）, the inner bearing positioning convex platform（13）With outer bearing positioning convex platform
（14）Between be provided with annular groove（15）.
2. a kind of rear-wheel hub according to claim 1, it is characterised in that：The inner bearing positioning convex platform（13）On be provided with
Multiple No.1 groovings（16）, the outer bearing positioning convex platform（14）On be provided with multiple No. two groovings（17）.
3. a kind of rear-wheel hub according to claim 2, it is characterised in that：The hub body（1）Inside it is provided with inner oil seal
Hole（18）With outer oil seal hole（19）, the inner oil seal hole（18）Positioned at inner shaft bearing bore（11）Away from inner bearing positioning convex platform（13）'s
One side, the outer oil seal hole（19）Positioned at outer shaft bearing bore（12）Away from outer bearing positioning convex platform（14）One side.
4. a kind of rear-wheel hub according to claim 3, it is characterised in that：The annular groove（15）Inside it is provided with lubricating oil
Or lubricating grease.
5. a kind of rear-wheel hub according to any one in claim 1-4, it is characterised in that：The hub body（1）On
It is provided with wheel hub pan portion（2）With half shaft mounting hole outer ring（3）, the wheel hub pan portion（2）On be evenly arranged with multiple bolts hole
（21）, the hub body（1）Outer wall and wheel hub pan portion（2）Away from half shaft mounting hole outer ring（3）End face between be provided with
No.1 curved surface（4）, the No.1 curved surface（4）On be evenly arranged with multiple No.1 grooves（41）, the No.1 groove（41）It is located at
Two neighboring bolt hole（21）Between, No.1 groove（41）In No.1 curved surface（4）On be spaced apart.
6. a kind of rear-wheel hub according to claim 5, it is characterised in that：The half shaft mounting hole outer ring（3）On uniformly set
It is equipped with multiple half shaft mounting holes（31）, the wheel hub pan portion（2）With half shaft mounting hole outer ring（3）Between be provided with No. two curved surfaces
（5）, No. two curved surfaces（5）On be evenly arranged with multiple No. two grooves（51）, No. two grooves（51）Positioned at two neighboring
Half shaft mounting hole（31）Between, No. two grooves（51）In No. two curved surfaces（5）On be spaced apart.
7. a kind of rear-wheel hub according to claim 6, it is characterised in that：The wheel hub pan portion（2）Close to half shaft mounting hole
Outer ring（3）End face on be evenly arranged with multiple positioning plates（6）, the positioning plate（6）With wheel hub pan portion（2）End face vertically connect
It connects, positioning plate（6）Close to half shaft mounting hole outer ring（3）One side and No. two curved surfaces（5）It is connected.
8. a kind of rear-wheel hub according to claim 5, it is characterised in that：The wheel hub pan portion（2）On be provided with multiple systems
Dynamic drum positioning spiro pit（22）.
9. a kind of rear-wheel hub according to claim 4, it is characterised in that：The hub body（1）It is upper to be located at inner oil seal hole
（18）The position in outside sets rack gear installation position（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460317.3A CN108099491A (en) | 2017-12-28 | 2017-12-28 | A kind of rear-wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711460317.3A CN108099491A (en) | 2017-12-28 | 2017-12-28 | A kind of rear-wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108099491A true CN108099491A (en) | 2018-06-01 |
Family
ID=62214039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711460317.3A Pending CN108099491A (en) | 2017-12-28 | 2017-12-28 | A kind of rear-wheel hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108099491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829799A (en) * | 2021-09-29 | 2021-12-24 | 保定市立中车轮制造有限公司 | Commercial car aluminum wheel hub |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5328275A (en) * | 1993-05-06 | 1994-07-12 | Stemco Inc. | Unitized wheel hub and bearing assembly |
| US5904427A (en) * | 1996-11-04 | 1999-05-18 | Stemco Inc | Unitized wheel hub and bearing assembly with lubricant distributing vanes |
| US5992943A (en) * | 1997-07-17 | 1999-11-30 | Dana Corporation | Wheel end assembly |
| CN205553773U (en) * | 2016-04-26 | 2016-09-07 | 宜昌奥力铸造有限责任公司 | Wheel hub after flower disc formula car axle |
| CN205780462U (en) * | 2016-06-23 | 2016-12-07 | 北汽福田汽车股份有限公司 | Wheel hub and vehicle |
| CN207875272U (en) * | 2017-12-28 | 2018-09-18 | 东风商用车有限公司 | A kind of rear-wheel hub |
-
2017
- 2017-12-28 CN CN201711460317.3A patent/CN108099491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5328275A (en) * | 1993-05-06 | 1994-07-12 | Stemco Inc. | Unitized wheel hub and bearing assembly |
| US5904427A (en) * | 1996-11-04 | 1999-05-18 | Stemco Inc | Unitized wheel hub and bearing assembly with lubricant distributing vanes |
| US5992943A (en) * | 1997-07-17 | 1999-11-30 | Dana Corporation | Wheel end assembly |
| CN205553773U (en) * | 2016-04-26 | 2016-09-07 | 宜昌奥力铸造有限责任公司 | Wheel hub after flower disc formula car axle |
| CN205780462U (en) * | 2016-06-23 | 2016-12-07 | 北汽福田汽车股份有限公司 | Wheel hub and vehicle |
| CN207875272U (en) * | 2017-12-28 | 2018-09-18 | 东风商用车有限公司 | A kind of rear-wheel hub |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829799A (en) * | 2021-09-29 | 2021-12-24 | 保定市立中车轮制造有限公司 | Commercial car aluminum wheel hub |
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