CN103818189B - Automobile and drive axle assembly thereof - Google Patents
Automobile and drive axle assembly thereof Download PDFInfo
- Publication number
- CN103818189B CN103818189B CN201410047685.5A CN201410047685A CN103818189B CN 103818189 B CN103818189 B CN 103818189B CN 201410047685 A CN201410047685 A CN 201410047685A CN 103818189 B CN103818189 B CN 103818189B
- Authority
- CN
- China
- Prior art keywords
- bearing
- axle housing
- driving axis
- differential
- hole
- 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 invention discloses an automobile and a drive axle assembly thereof. The drive axle assembly comprises an axle housing, a left bearing cap, a right bearing cap and a bearing base. The bearing base is fixedly connected with the axle housing, the left bearing cap and the right bearing cap. The axle housing is provided with a left positioning face and a right positioning face, abutted against the left side of the left bearing cap through the left positioning face and abutted against the right side of the right bearing cap through the right positioning face. Compared with the prior art, the drive axle assembly has the advantages that by limiting the positional relation between the axle housing and each of the left and right bearing cap, a lug portion for mounting of a differential bearing is modified into a simply supported beam structure with two supporting points from an existing suspension structure, and supporting rigidity of the lug portion is greatly improved. Therefore, deformation of the lug portion during operation of the drive axle assembly can be reduced, namely deviation value of a theoretical axis and a practical axis of a bearing mounting hole is decreased, and accordingly abrasion loss of the differential bearing is reduced, the service life of the differential bearing is prolonged, and working performance of the drive axle assembly is further optimized.
Description
Technical field
The present invention relates to Automobile drive axle assembly technical field, particularly to a kind of automobile and its driving axis.
Background technology
Driving axis are one of important composition mechanisms of automobile, and its effect is by motor torque reduction of speed increment and to change
The direction of transfer of torque, realizes both sides wheel differential action it is ensured that medial and lateral wheel is turned to different rotating speeds simultaneously.
To introduce the composition of driving axis in conjunction with Fig. 1, driving axis include axle housing 01, semiaxis 02 and main deceleration
Device, wherein, main reducing gear includes drive bevel gear 031, driven wheel of differential 032, bearing base 033, left bearing lid 034, right axle
Hold lid 035 and differential assembly, drive bevel gear 031 is in transmission connection with bearing base 033 and is engaged with driven wheel of differential 032,
Left bearing lid 034 and right bearing lid 035 are fixedly connected to form left and right earhole structure with bearing base 033.Differential assembly includes
Differential carrier 038 and planetary gear mechanism, differential carrier 038 is fixedly connected with driven wheel of differential 032, and passes through left differential
Device bearing 036 and right differential bearing 037 are in transmission connection with bearing base 033, axle housing 01 cover dress main reducing gear and with bearing bottom
Seat 033 is fixedly connected, and semiaxis 02 is fixedly connected with the axle shaft gear 039 of planetary gear mechanism.For the ease of more preferably geographical
The concrete structure of solution driving axis, please also refer to Fig. 2, the decomposition texture that the figure shows main reducing gear shown in Fig. 1 shows
It is intended to.
The operation principle of said structure driving axis is: drive bevel gear 031 is engaged with driven wheel of differential 032, will pass
The moment of torsion that moving axis passes over slows down to increase and turns round, and realizes 90 degree of commutations simultaneously, is then driven by differential assembly inner planet gear
Moment of torsion is transferred to semiaxis 02 by mechanism respectively, to drive left and right wheelses to rotate.
Disassemble main reducing gear after sale and find that two differential bearings all have eccentric wear phenomenon, differential bearing eccentric wear leads to bearing
Service life reduction simultaneously makes to produce loud noise in driving axis work process.
The analysis showed that, differential bearing eccentric wear is subject to driving and driven bevel gear engagement to produce mainly due to earhole part
Axial force, the derivation axial force that produces of differential bearing pretightning force and differential bearing radial load and deform, cause
Make the bearing mounting hole of earhole part coaxially not caused with differential carrier axle journal.Specifically, refer to Fig. 3, the figure shows Fig. 1
Shown in driving axis main reducing gear cross section structure diagram, wherein, α and β is respectively left and right earhole split bearing peace
Theoretical axis l in dress hole and the angle of actual axis l '.
In order to solve the above problems, currently used scheme is to increase to thicken earhole portion size, specifically, such as Fig. 4
Shown, this in figure solid line and dotted line represent the outer contour of earhole part before and after improvement respectively.Although by increasing earhole part
The mode of size can improve its rigidity, but due to being limited by arrangement space, earhole portion size increases thickening condition to be had
Limit, and the lifting of limited rigidity can not support ear bore portion stress deformation well, therefore, the program is improving differential bearing
Produce little effect during eccentric wear problem.
In view of this, how effectively to reduce differential bearing eccentric wear, to optimize the properties of product of main gearbox assembly, be
Those skilled in the art's technical problem urgently to be resolved hurrily.
Content of the invention
For drawbacks described above, the invention provides a kind of driving axis, inclined to solve decelerator bearing in prior art
The problem of mill.On this basis, the present invention also provides a kind of automobile including above-mentioned driving axis.
For solving above-mentioned technical problem, the present invention provides a kind of driving axis, including axle housing, left bearing lid, right bearing
Lid and bearing base, wherein, bearing base is fixedly connected with axle housing, and is fixedly connected with right bearing lid and left bearing lid, axle housing
There is left locating surface and right locating surface, axle housing offseted by the left surface of left locating surface and left bearing lid, by right locating surface with
The right flank of right bearing lid offsets.
The present invention passes through to limit the assembly relation of axle housing and left and right bearing cap, is used in the earhole installing differential bearing
Part, is improved to the simple beam structure with two strong points, drastically increases earhole part by existing cantilever design
Support stiffness, so can reduce the deflection of driving axis work process middle ear bore portion, that is, reduce bearing mounting hole
Theoretical axis and the departure of actual axis, thus decreasing the wear extent of differential bearing, extending its service life, and then
Optimize driving axis service behaviour.
In one preferred version of the present invention, above-mentioned axle housing has through hole, and wherein, left locating surface and right locating surface are specially and lead to
The hole wall in hole.
It is appreciated that this programme is on the basis of axle housing existing structure, through hole the hole using through hole are adapted by processing
Wall is coordinated with bearing cap, cleverly achieves axle housing and left and right bearing cap assembly technology, has processing and assembly technology is simple
Feature, thus axle housing improving cost can be controlled to the maximum limit.
In the another preferred version of the present invention, the axle housing of said structure and left bearing lid and right bearing lid interference fit.This
Scheme passes through the assembly technology of interference fit between three, can revise the deformation that earhole part produces in main reducing gear assembling process
Amount, the axial force that this deflection is mainly formed by engagement between the pretightning force of differential bearing and gear drive middle gear
Cause, thus the wear extent of differential bearing can further be reduced, and then further its service life of prolongation.
Preferably, the magnitude of interference of described axle housing and described left bearing lid and described right bearing lid interference fit be 0～
0.03mm.
Preferably, the cross sectional shape of described through hole is circle, and described right flank and described left surface are and described hole wall
The arc surface being adapted.
Preferably, the hole wall of described through hole includes at least two planes, and in two described planes, one is left locating surface, separately
One is right locating surface, and described right flank and described left surface are plane.
In addition to above-mentioned driving axis, the present invention also provides a kind of automobile, and this automobile includes driving axis, this drive axle
Assembly is specially said structure.
It is appreciated that because above-mentioned driving axis have above-mentioned technique effect, the automobile including this driving axis is same
Sample has identical technique effect, so will not be described here.
Brief description
Fig. 1 shows the cross section structure diagram of driving axis；
Fig. 2 shows the decomposition texture schematic diagram of the main reducing gear of driving axis shown in Fig. 1；
Fig. 3 shows the cross section structure diagram of main reducing gear shown in Fig. 2；
Fig. 4 shows the structural representation of earhole part shown in Fig. 3；
Fig. 5 shows the cross section structure diagram of driving axis first specific embodiment provided by the present invention；
Fig. 6 shows the overlooking the structure diagram of driving axis shown in Fig. 5；
Fig. 7 shows the cross section structure diagram of driving axis second specific embodiment provided by the present invention；
Fig. 8 shows the overlooking the structure diagram of driving axis shown in Fig. 7.
Corresponding relation between reference and all parts title in Fig. 1 to 4:
01 axle housing, 02 semiaxis, 031 drive bevel gear, 032 driven wheel of differential, 033 bearing base, 034 left bearing lid, 035
Right bearing lid, 036 left differential bearing, 037 there are differential bearing, 038 differential carrier, 039 axle shaft gear.
Corresponding relation between reference and all parts title in Fig. 5 to 8:
Bridge 1 shell, 11 through holes, 2 bearing bases, 3 left bearing lids, 4 right bearing lids.
Specific embodiment
The core of the present invention is, provides a kind of driving axis, is closed with the position of left and right bearing cap by limiting axle housing
System, reducing the deflection of the earhole part installing differential bearing, thus decreasing the wear extent of differential bearing, extending
Its service life, reduce the noise producing in work process, and then optimize the service behaviour of driving axis.Here basis
On, the present invention also provides a kind of automobile including above-mentioned driving axis.
In conjunction with Figure of description, the specific embodiment of driving axis provided by the present invention to be described.Need
Bright, the involved noun of locality " left " and " right " are to be set on the basis of accompanying drawing it will be understood that the above-mentioned noun of locality herein
There is not limiting protection scope of the present invention.
Refer to Fig. 5 and Fig. 6, wherein, Fig. 5 shows driving axis first specific embodiment provided by the present invention
Cross section structure diagram, Fig. 6 shows the overlooking the structure diagram of driving axis shown in Fig. 5.
As shown in figure 5, the driving axis provided in the present embodiment, including axle housing 1, bearing base 2, left bearing lid 3
With right bearing lid 4, wherein, left bearing lid 3 and right bearing lid 4 are symmetrically fixedly connected on the two ends of bearing base 2, shown
Axle housing 1 is fixedly connected with bearing base 2.Axle housing 1 has left locating surface and right locating surface, and axle housing 1 is by left locating surface and left axle
The left surface holding lid 3 is offseted, is offseted by the right flank of right locating surface and right bearing lid 4.For the ease of more fully understanding driving
The concrete structure of axle assembly, please also refer to Fig. 6.
Specifically, as shown in fig. 6, axle housing 1 has through hole 11, the cross sectional shape of this through hole 11 is circle, left locating surface and
Right locating surface is the hole wall of this through hole 11, and correspondingly, the right flank of the left surface of left bearing lid 3 and right bearing lid 4 is and is somebody's turn to do
The arc surface that through hole 11 inwall is adapted.
The present embodiment passes through to limit the concrete structure of axle housing and left and right bearing cap, is used in the ear installing differential bearing
Bore portion, is improved to the simple beam structure with two strong points, is greatly enhanced earhole part by existing cantilever design
Support stiffness, so can reduce the deflection of driving axis work process middle ear bore portion, that is, reduce bearing mounting hole
Theoretical axis and the departure of actual axis, thus decreasing the wear extent of differential bearing, extending its service life, and then
Optimize driving axis service behaviour.
Additionally, on the basis of axle housing 1 existing structure, joining by processing through hole 11 and using the hole wall and bearing cap of through hole 11
Close, cleverly achieve axle housing 1 and left and right bearing cap assembly relation, there is processing and the simple feature of assembly technology, thus can
Control the improving cost of axle housing to greatest extent.
It should be noted that meeting the function of coordinating by locating surface, processing technique and assembler with left and right bearing cap
On the basis of skill, the left and right locating surface of axle housing can also be realized by increasing the structures such as earthen platform in axle housing.
Next, to introduce the another specific embodiment of driving axis provided by the present invention with reference to Fig. 7 and Fig. 8, its
In, Fig. 7 shows the cross section structure diagram of driving axis second specific embodiment provided by the present invention, and Fig. 8 shows
The overlooking the structure diagram of driving axis shown in Fig. 7.
This embodiment is identical with previous embodiment basic structure, and distinctive points are, in the latter the hole wall of through hole 11 include to
Few two planes, in two planes, one is left locating surface, and another one is right locating surface, correspondingly, the left surface of left bearing lid 3
It is plane with the right flank of right bearing lid 4.
Furthermore, it is necessary to explanation, in above two embodiment, axle housing 1 is joined with left bearing lid 3 and right bearing lid 4 interference
Close, it is intended that revise the change that earhole part produces in main reducing gear assembling process by interference fit relation
Shape amount, the axial direction that this deflection is mainly formed by engagement between the pretightning force of differential bearing and gear drive middle gear
Power causes, thus the wear extent of differential bearing can further be reduced, and then further its service life of prolongation.
Show through multiple assembling test statistical data, when the magnitude of interference of interference fit is 0～0.03mm, ensureing main deceleration
On the basis of device assembly internal gear transmission mechanism normal work, differential in driving axis work process can be reduced to greatest extent
The wear extent of device bearing.
It is appreciated that on the basis of meeting the function of reducing differential bearing wear extent and assembly technology requirement, bridge
Shell 1 and left and right bearing cap can be coordinated by gap and other conventional mechanical assembly modes such as interference fits.
In addition to above-mentioned driving axis, the present invention also provides a kind of automobile, and including driving axis, driving axis are concrete
For structure as above.It is appreciated that constituting the primary functional elements of this automobile and its operation principle is complete with prior art
Identical, those skilled in the art pass through prior art completely it is achieved that so will not be described here.
The foregoing is only the preferred embodiment of the present invention, do not constitute limiting the scope of the present invention.Any
Any modification, equivalent and improvement of being made within the spirit and principles in the present invention etc., should be included in the power of the present invention
Within the scope of profit is claimed.
Claims (4)
1. a kind of driving axis, including axle housing (1), bearing base (2), left bearing lid (3) and right bearing lid (4), described axle
Hold base (2) to be fixedly connected with described left bearing lid (3) and right bearing lid (4), and be fixedly connected with described axle housing (1), it is special
Levy and be, described axle housing (1) has left locating surface and right locating surface, described axle housing (1) passes through described left locating surface and a described left side
The left surface of bearing cap (3) is offseted, is offseted by the right flank of described right locating surface and described right bearing lid (4)；
Described axle housing (1) has through hole (11), the hole of described left locating surface and described right locating surface specially described through hole (11)
Wall；
Described axle housing (1) and described left bearing lid (3) and described right bearing lid 4) interference fit；
Described axle housing (1) is 0～0.03mm with the magnitude of interference of described left bearing lid (3) and described right bearing lid (4) interference fit.
2. driving axis as claimed in claim 1 are it is characterised in that the cross sectional shape of described through hole (11) is circle, institute
State right flank and described left surface is the arc surface being adapted with described hole wall.
3. driving axis as claimed in claim 1 it is characterised in that the hole wall of described through hole (11) to include at least two flat
Face, in two described planes, one is left locating surface, and another one is right locating surface, and described right flank and described left surface are flat
Face.
4. a kind of automobile, including driving axis it is characterised in that described driving axis are specially as in claims 1 to 3
Driving axis described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410047685.5A CN103818189B (en) | 2014-02-11 | 2014-02-11 | Automobile and drive axle assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410047685.5A CN103818189B (en) | 2014-02-11 | 2014-02-11 | Automobile and drive axle assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103818189A CN103818189A (en) | 2014-05-28 |
| CN103818189B true CN103818189B (en) | 2017-01-25 |
Family
ID=50753595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410047685.5A Active CN103818189B (en) | 2014-02-11 | 2014-02-11 | Automobile and drive axle assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103818189B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980213A (en) * | 2017-06-01 | 2018-12-11 | 陕西汉德车桥有限公司 | A kind of bearing block |
| CN109532335A (en) * | 2017-09-21 | 2019-03-29 | 上汽通用五菱汽车股份有限公司 | A kind of automobile rear driving axle assembly |
| CN108317237A (en) * | 2018-01-24 | 2018-07-24 | 广西汽车集团有限公司 | Main gearbox assembly and its speed reducer housing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201120843Y (en) * | 2007-11-27 | 2008-09-24 | 贵州航天红光机械制造有限公司 | Drive axle apparatus of electric car |
| CN201792740U (en) * | 2010-06-23 | 2011-04-13 | 石光林 | High-rigidity driving axle |
| CN202123897U (en) * | 2011-05-26 | 2012-01-25 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Half axle assembly structure for rear drive axle of minicar |
| CN203727104U (en) * | 2014-02-11 | 2014-07-23 | 柳州五菱汽车有限责任公司 | Automobile and driving axle assembly thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7175560B2 (en) * | 2005-01-20 | 2007-02-13 | American Axle & Manufacturing, Inc. | Thermally compensating bearing preload arrangement in axle assembly |
| US20080227581A1 (en) * | 2007-03-12 | 2008-09-18 | Catalano Michael J | Axle housing with differential bearing support |
-
2014
- 2014-02-11 CN CN201410047685.5A patent/CN103818189B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201120843Y (en) * | 2007-11-27 | 2008-09-24 | 贵州航天红光机械制造有限公司 | Drive axle apparatus of electric car |
| CN201792740U (en) * | 2010-06-23 | 2011-04-13 | 石光林 | High-rigidity driving axle |
| CN202123897U (en) * | 2011-05-26 | 2012-01-25 | 中国长安汽车集团股份有限公司四川建安车桥分公司 | Half axle assembly structure for rear drive axle of minicar |
| CN203727104U (en) * | 2014-02-11 | 2014-07-23 | 柳州五菱汽车有限责任公司 | Automobile and driving axle assembly thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103818189A (en) | 2014-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3960553B1 (en) | Wheel rotation device for in-wheel motor vehicle | |
| CN105972162B (en) | A kind of secondary gear transmission decelerating device | |
| CN103818189B (en) | Automobile and drive axle assembly thereof | |
| CN104401302B (en) | Automobile and its disk brake Automobile drive rear axle assy | |
| WO2018099392A1 (en) | Planetary speed reducer with small tooth difference, in-vehicle display, and vehicle | |
| CN105691103A (en) | Hub driving assembly | |
| CN104455226A (en) | Three cycloidal gear type RV speed reducer | |
| JP6781608B2 (en) | In-wheel motor drive | |
| CN104246083A (en) | Construction machine drive device | |
| CN203920263U (en) | A kind of drive axle that is applicable to construction machinery and equipment | |
| JP2015093492A (en) | In-wheel motor driving device | |
| CN103115113B (en) | Stir speed reducer | |
| JP4967789B2 (en) | Wheel drive device | |
| JP5544949B2 (en) | Variable speed transmission unit | |
| JP5130780B2 (en) | Wheel drive device | |
| CN203727104U (en) | Automobile and driving axle assembly thereof | |
| CN102748431A (en) | Speed reducer and heading machine with speed reducer | |
| JP2017137896A (en) | Stationary support structure of rolling bearing | |
| CN106853768A (en) | hub drive assembly | |
| CN205371472U (en) | Wheel limit structure and operation machinery of planet gear , leveler | |
| CN104595424A (en) | Planetary wheel side reducer assembly | |
| CN210661220U (en) | Planetary gear transmission case | |
| CN204459011U (en) | A kind of compound full-depth tooth drives eccentric active-tooth transmission | |
| CN113752821A (en) | High-speed wheel-side motor driving system speed reducing mechanism based on composite planetary gear train | |
| CN202251732U (en) | Planet wheel speed reducer provided with wear-resistant part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Applicant after: Guangxi company limited of automobile group Applicant after: Liuzhou Wuling Automobile Industry Co., Ltd. Address before: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Applicant before: Liuzhou Wuling Motors Co., Ltd. Applicant before: Liuzhou Wuling Automobile Industry Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WULING AUTOMOBILE CO., LTD., LIUZHOU TO: GUANGXI PROVINCE AUTOMOBILE GROUP CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180521 Address after: No. 19, Longxing Town, Yubei, Chongqing, Chongqing Patentee after: Chongqing Zhuo Tong Automobile Industry Co., Ltd. Address before: No. 18, Hexi Road, Liuzhou, the Guangxi Zhuang Autonomous Region, the Guangxi Zhuang Autonomous Region Co-patentee before: Liuzhou Wuling Automobile Industry Co., Ltd. Patentee before: Guangxi company limited of automobile group |