CN108131434B - A kind of differential casing of optimization lubrication - Google Patents
A kind of differential casing of optimization lubrication Download PDFInfo
- Publication number
- CN108131434B CN108131434B CN201810023513.2A CN201810023513A CN108131434B CN 108131434 B CN108131434 B CN 108131434B CN 201810023513 A CN201810023513 A CN 201810023513A CN 108131434 B CN108131434 B CN 108131434B
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- chamfering
- differential casing
- cross axle
- spherical cavity
- oil
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
- F16H48/40—Constructional details characterised by features of the rotating cases
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0482—Gearings with gears having orbital motion
- F16H57/0483—Axle or inter-axle differentials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Retarders (AREA)
Abstract
It is a kind of to optimize the differential casing lubricated, including left differential casing interconnected and right differential casing, cross axle axis hole is formed between half slot of left half slot of cross axle and right cross axle；Left spherical cavity is offered in the middle part of the left differential casing, the side of the left spherical cavity is communicated with left half axle axis hole, offers left chamfering on the end face of the left differential casing in the other side of the left spherical cavity；Right spherical cavity 22 is offered in the middle part of the right differential casing, the side of the right spherical cavity is communicated with right axle shaft axis hole, offers right chamfering on the end face of the right differential casing in the other side of the right spherical cavity 22；The left chamfering is correspondingly arranged with right chamfering, is formed with chamfering oil-way between the left chamfering and right chamfering.The design can not only be lubricated cross axle axis hole, and can be lubricated between planet gear pad and differential casing, effectively improve differential mechanism heat dissipation performance, extend service life of gear.
Description
Technical field
It is specific suitable the present invention relates to a kind of differential mechanism casing structure more particularly to a kind of differential casing of optimization lubrication
For enhancing the heat dissipation performance of differential mechanism, gear, the abrasion of cross axle, spot corrosion, sintering are avoided.
Background technique
Differential mechanism respectively drives two sides semiaxis and driving wheel.Differential mechanism is divided into inter-wheel differential and inter-axle differential, between wheel
Differential mechanism is installed in the differential gear systems between same two side drive wheel of drive axle；Inter-axle differential is differential between each drive axle
Gear train.
Planetary gear and axle shaft gear are under the action of huge axial force, " extruding " gasket, allow differential casing and pad
It is difficult to store lubricating oil between piece, generates friction with gasket and differential casing when axle shaft gear and planetary gear rotation, generates
Heat, can not be but discharged by lubricating oil, cause local temperature high, can not effective temperature-reducing, so as to cause component wear, point
The failures such as erosion, cross axle and planetary gear sintering.
China Patent Publication No. is CN204004284U, and publication date is that the utility model patent on December 10th, 2014 discloses
A kind of differential casing, the differential casing are rotatablely connected by rolling bearing with gearbox；Final gear is the same as described
Differential casing is fixedly connected, and the differential casing is divided into left-side differential shell and right-side differential shell two
Point；Left-hand screw slot is provided on the inner wall of the left-side differential shell；It is provided on the inner wall of the right-side differential shell
Right spiral；Although the hand of spiral of the left-hand screw slot and the right spiral is on the contrary, the utility model can enhance differential
The lubrication of device, but its there are still following defects:
1, the lubricating system of the utility model is suitable for small vehicle, to it is lubricated with Heavy Duty Commercial Car, is unable to satisfy difference
The cooling requirements of fast device.
2, the utility model does not lubricate cross axle directly, is easy to cause cross axle abrasion, spot corrosion, sintering.
3, the utility model is not lubricated between planet gear pad and differential casing, and star cog spacers is caused to obtain
Differential mechanism is caused to fail less than abundant heat dissipation.
Summary of the invention
The purpose of the present invention is overcoming the problems, such as that cross axle lack of lubrication existing in the prior art, heat dissipation performance are poor, mention
A kind of differential casing with oil-way of sufficient lubrication cross axle is supplied.
In order to achieve the above object, the technical solution of the invention is as follows:
A kind of differential casing of optimization lubrication, including left differential casing interconnected and right differential casing, institute
The end for stating left differential casing is opened up there are four left half slot of cross axle, and the end of the right differential casing opens up that there are four right
Half slot of cross axle, left half slot of cross axle are correspondingly arranged with right half slot of cross axle, left half slot of cross axle and right cross axle
Cross axle axis hole is formed between half slot；
Left spherical cavity, side and the left half axle axis hole phase of the left spherical cavity are offered in the middle part of the left differential casing
It is logical, left chamfering is offered on the end face of the left differential casing in the other side of the left spherical cavity；
Right spherical cavity 22, the side of the right spherical cavity and right axle shaft axis hole are offered in the middle part of the right differential casing
It communicates, offers right chamfering on the end face of the right differential casing in the other side of the right spherical cavity；
The left chamfering is correspondingly arranged with right chamfering, is formed with chamfering oil-way between the left chamfering and right chamfering.
The angle of the left chamfering and left differential casing end face is α, and the angle of the angle α is 30 degree of -75 degree；
The angle of the right chamfering and right differential casing end face is β, and the angle of the angle β is 30 degree of -75 degree；
The angle α of the left chamfering and left differential casing end face is equal to the angle of right chamfering and right differential casing end face
β。
The left chamfering is identical as right chamfering structure, and the left chamfering and right chamfering are the cambered surface chamfering of indent.
The left chamfering is identical as right chamfering structure, and the left chamfering and right chamfering are the folding face chamfering of indent.
Left spherical cavity nearly left half axle axis hole side offers multiple left thermal windows, and left half slot of cross axle is set to
In the cavity wall of left spherical cavity remote left half axle axis hole side, left oil-way, the left profit are offered in the cavity wall of the left spherical cavity
One end of oil groove is communicated with left half slot of cross axle, and the other end of the left oil-way is communicated with left thermal window；
Right spherical cavity nearly right axle shaft axis hole side offers multiple right thermal windows, and right half slot of cross axle is set to
In the cavity wall of right spherical cavity remote right axle shaft axis hole side, right oil-way, the right profit are offered in the cavity wall of the right spherical cavity
One end of oil groove is communicated with right half slot of cross axle, and the other end of the right oil-way is communicated with right thermal window 24.
The side of half slot of left cross axle is communicated by least two left oil-ways with left thermal window；
The side of half slot of right cross axle is communicated by least two right oil-ways with right thermal window；
The left oil-way and right oil-way are arc groove.
Compared with prior art, the invention has the benefit that
1, in the connection of left differential casing and right differential casing in a kind of differential casing of optimization lubrication of the present invention
Left chamfering and right chamfering are opened up on the annular end face of endface, and chamfering oil-way is formed between left chamfering and right chamfering, is made
The lubricating oil entered in cross axle axis hole flows into chamfering oil-way, and lubricating oil enters after chamfering oil-way to planetary gear
The gap of gasket and differential casing is lubricated, and helps to reduce gear and differential casing while the heat dissipation of star cog spacers
Between abrasion, spot corrosion, sintering, optimize the working environment of differential gear, avoid failing because of differential mechanism caused by lubrication is abnormal.
Therefore, the design heat dissipation performance is excellent, effectively avoids the abrasion, spot corrosion, sintering of gear, extends service life of gear.
2, one is formed between four cross axle axis holes in a kind of differential casing of optimization lubrication of the present invention mutually to interconnect
Logical lubricant oil way makes to be complementary to one another lubricating oil between cross axle, be lubricated to trunnion journal, avoids cross axle because of profit
It slides insufficient and differential mechanism is caused to fail, improve the reliability of differential mechanism.Therefore, the design greasy property is excellent, and differential mechanism is reliable
Property it is high.
3, the half slot side of each cross axle in a kind of differential casing of optimization lubrication of the present invention is at least provided with one
Oil-way, to guarantee that each cross axle axis hole by sufficient lubrication, while is distributed in oil-way in cavity wall to make planet
Lubrication between cog spacers and differential casing is more uniform.Therefore, the design lubricating uniform, high reliablity.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the embodiment of the present invention 2.
Fig. 3 is the embodiment of the present invention 3.
Fig. 4 is the embodiment of the present invention 4.
In figure: left differential casing 1, half slot 11 of left cross axle, left spherical cavity 12, left half axle axis hole 13, left thermal window
14, left oil-way 15, left chamfering 16, right differential casing 2, half slot 21 of right cross axle, right spherical cavity 22, right axle shaft axis hole
23, right thermal window 24, right oil-way 25, right chamfering 26, cross axle axis hole 3, chamfering oil-way 4.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 4, a kind of differential casing of optimization lubrication, including left differential casing 1 interconnected and the right side
Differential casing 2, the end of the left differential casing 1 are opened up there are four left half slot 11 of cross axle, the right differential casing 2
End open up there are four right half slot 21 of cross axle, left half slot 11 of cross axle is correspondingly arranged with right half slot 21 of cross axle, institute
It states and is formed with cross axle axis hole 3 between half slot 21 of left half slot 11 of cross axle and right cross axle；
The middle part of the left differential casing 1 offers left spherical cavity 12, the side of the left spherical cavity 12 and left half axle
Axis hole 13 communicates, and offers left chamfering 16 on the end face of the left differential casing 1 in the other side of the left spherical cavity 12；
The middle part of the right differential casing 2 offers right spherical cavity 22, the side of the right spherical cavity 22 and right axle shaft
Axis hole 23 communicates, and offers right chamfering 26 on the end face of the right differential casing 2 in the other side of the right spherical cavity 22；
The left chamfering 16 is correspondingly arranged with right chamfering 26, and chamfering profit is formed between the left chamfering 16 and right chamfering 26
Oil groove 4.
The left chamfering 16 and the angle of left 1 end face of differential casing are α, and the angle of the angle α is 30 degree of -75 degree；
The right chamfering 26 and the angle of right 2 end face of differential casing are β, and the angle of the angle β is 30 degree of -75 degree；
The angle α of the left chamfering 16 and left 1 end face of differential casing is equal to right chamfering 26 and right 2 end face of differential casing
Angle β.
The left chamfering 16 is identical as right 26 structure of chamfering, and the left chamfering 16 is fallen with the cambered surface that right chamfering 26 is indent
Angle.
The left chamfering 16 is identical as right 26 structure of chamfering, and the left chamfering 16 is fallen with the folding face that right chamfering 26 is indent
Angle.
Nearly 13 side of left half axle axis hole of the left spherical cavity 12 offers multiple left thermal windows 14, left half slot of cross axle
11 are set in the cavity wall of remote 13 side of left half axle axis hole of left spherical cavity 12, offer left lubrication in the cavity wall of the left spherical cavity 12
Oil groove 15, one end of the left oil-way 15 are communicated with left half slot 11 of cross axle, the other end of the left oil-way 15 with
Left thermal window 14 communicates；
Nearly 23 side of right axle shaft axis hole of the right spherical cavity 22 offers multiple right thermal windows 24, right half slot of cross axle
21 are set in the cavity wall of remote 23 side of right axle shaft axis hole of right spherical cavity 22, offer right lubrication in the cavity wall of the right spherical cavity 22
Oil groove 25, one end of the right oil-way 25 are communicated with right half slot 21 of cross axle, the other end of the right oil-way 25 with
Right thermal window 24 communicates.
The side of half slot 11 of left cross axle is communicated by least two left oil-ways 15 with left thermal window 14；
The side of half slot 21 of right cross axle is communicated by least two right oil-ways 25 with right thermal window 24；
The left oil-way 15 and right oil-way 25 are arc groove.
The principle of the present invention is described as follows:
Increase by a chamfering in the counterface of left and right differential casing, after left and right differential casing is linked together,
An annular oil groove is formd, this annular oil groove is connected to four cross shaft holes simultaneously, and differential carrier body portion is immersed in lubricating oil,
When automobilism, differential casing is rotated, and lubricating oil can be constantly entered in cross shaft hole, and lubricating oil passes through cross shaft hole and imports
In the oil-way formed to chamfering, so oil groove can constantly compensate lubricating oil, guarantee differential casing and planetary gear pad
Lubrication between piece simultaneously, can also be lubricated trunnion journal, and gear, the abrasion of cross axle, spot corrosion, burning is effectively reduced
Knot, avoids the failure of component.
Embodiment 1:
A kind of differential casing of optimization lubrication, including left differential casing 1 interconnected and right differential casing 2,
The end of the left differential casing 1 is opened up there are four left half slot 11 of cross axle, and the end of the right differential casing 2 offers
Four right half slots 21 of cross axle, left half slot 11 of cross axle are correspondingly arranged with right half slot 21 of cross axle, the left cross axle half
Cross axle axis hole 3 is formed between half slot 21 of slot 11 and right cross axle；The middle part of the left differential casing 1 offers left spherical surface
The side of chamber 12, the left spherical cavity 12 is communicated with left half axle axis hole 13, the left differential carrier in the other side of the left spherical cavity 12
Left chamfering 16 is offered on the end face of body 1；The middle part of the right differential casing 2 offers right spherical cavity 22, the right spherical surface
The side of chamber 22 is communicated with right axle shaft axis hole 23, is opened up on the end face of the right differential casing 2 in the other side of the right spherical cavity 22
There is right chamfering 26；The left chamfering 16 is correspondingly arranged with right chamfering 26, is formed with down between the left chamfering 16 and right chamfering 26
Angle oil-way 4.
Embodiment 2:
Embodiment 2 is substantially the same manner as Example 1, the difference is that:
Referring to fig. 2, the left chamfering 16 and the angle of left 1 end face of differential casing are α, and the angle of the angle α is 60
Degree；The right chamfering 26 and the angle of right 2 end face of differential casing are β, and the angle of the angle β is 60 degree；The left chamfering
16 are equal to the angle β of right chamfering 26 and right 2 end face of differential casing with the angle α of left 1 end face of differential casing.
Embodiment 3:
Embodiment 3 is substantially the same manner as Example 1, the difference is that:
Identical as right 26 structure of chamfering referring to left chamfering 16 described in Fig. 3, the left chamfering 16 and right chamfering 26 are indent
Cambered surface chamfering.
Embodiment 4:
Embodiment 4 is substantially the same manner as Example 1, the difference is that:
The left chamfering 16 is identical as right 26 structure of chamfering referring to fig. 4, and the left chamfering 16 and right chamfering 26 are indent
Folding face chamfering.
Embodiment 5:
Embodiment 5 is substantially the same manner as Example 2, the difference is that:
Nearly 13 side of left half axle axis hole of the left spherical cavity 12 offers multiple left thermal windows 14, left half slot of cross axle
11 are set in the cavity wall of remote 13 side of left half axle axis hole of left spherical cavity 12, offer left lubrication in the cavity wall of the left spherical cavity 12
Oil groove 15, one end of the left oil-way 15 are communicated with left half slot 11 of cross axle, the other end of the left oil-way 15 with
Left thermal window 14 communicates；Nearly 23 side of right axle shaft axis hole of the right spherical cavity 22 offers multiple right thermal windows 24, the right side
Half slot 21 of cross axle is set in the cavity wall of remote 23 side of right axle shaft axis hole of right spherical cavity 22, is opened in the cavity wall of the right spherical cavity 22
Equipped with right oil-way 25, one end of the right oil-way 25 is communicated with right half slot 21 of cross axle, the right oil-way 25
The other end communicated with right thermal window 24.
Embodiment 6:
Embodiment 6 is substantially the same manner as Example 5, the difference is that:
Referring to Fig. 1, the side of left half slot 11 of cross axle passes through at least two left oil-ways 15 and left thermal window
14 communicate；The side of half slot 21 of right cross axle is communicated by least two right oil-ways 25 with right thermal window 24；Institute
It states left oil-way 15 and right oil-way 25 is arc groove.
Claims (7)
1. a kind of differential casing of optimization lubrication, including left differential casing interconnected (1) and right differential casing
(2), the end of the left differential casing (1) is opened up there are four left half slot of cross axle (11), the right differential casing (2)
End is opened up there are four right half slot of cross axle (21), and left half slot of cross axle (11) is corresponding with right cross axle half slot (21) to be set
It sets, cross axle axis hole (3) is formed between left half slot of cross axle (11) and half slot of right cross axle (21), it is characterised in that:
It is offered left spherical cavity (12) in the middle part of the left differential casing (1), the side of the left spherical cavity (12) and left half
Axis axis hole (13) communicates, and offers left chamfering on the end face of the left differential casing in the other side (1) of the left spherical cavity (12)
(16)；
It is offered right spherical cavity (22) in the middle part of the right differential casing (2), the side of the right spherical cavity (22) and right half
Axis axis hole (23) communicates, and offers right chamfering on the end face of the right differential casing in the other side (2) of the right spherical cavity (22)
(26)；
The left chamfering (16) is correspondingly arranged with right chamfering (26), is formed with down between the left chamfering (16) and right chamfering (26)
Angle oil-way (4).
2. a kind of differential casing of optimization lubrication according to claim 1, it is characterised in that:
The angle of the left chamfering (16) and left differential casing (1) end face is α, and the angle of the angle α is 30 degree of -75 degree；
The angle of the right chamfering (26) and right differential casing (2) end face is β, and the angle of the angle β is 30 degree of -75 degree；
The angle α of the left chamfering (16) and left differential casing (1) end face is equal to right chamfering (26) and right differential casing (2)
The angle β of end face.
3. a kind of differential casing of optimization lubrication according to claim 2, it is characterised in that:
The left chamfering (16) is identical as right chamfering (26) structure, and the left chamfering (16) and right chamfering (26) are the arc of indent
Surface chamfer.
4. a kind of differential casing of optimization lubrication according to claim 1, it is characterised in that:
The left chamfering (16) is identical as right chamfering (26) structure, and the left chamfering (16) and right chamfering (26) are the folding of indent
Surface chamfer.
5. a kind of differential casing of optimization lubrication according to claim 1,2,3 or 4, it is characterised in that:
Nearly left half axle axis hole (13) side of the left spherical cavity (12) offers multiple left thermal windows (14), the left cross axle half
Slot (11) is set in the cavity wall of remote left half axle axis hole (13) side of left spherical cavity (12), is opened in the cavity wall of the left spherical cavity (12)
Equipped with left oil-way (15), one end of the left oil-way (15) is communicated with left half slot of cross axle (11), the left lubrication
The other end of oil groove (15) is communicated with left thermal window (14)；
Nearly right axle shaft axis hole (23) side of the right spherical cavity (22) offers multiple right thermal windows (24), the right cross axle half
Slot (21) is set in the cavity wall of remote right axle shaft axis hole (23) side of right spherical cavity (22), is opened in the cavity wall of the right spherical cavity (22)
Equipped with right oil-way (25), one end of the right oil-way (25) is communicated with right half slot of cross axle (21), the right lubrication
The other end of oil groove (25) is communicated with right thermal window (24).
6. a kind of differential casing of optimization lubrication according to claim 5, it is characterised in that:
The side of half slot of left cross axle (11) is communicated by least two left oil-ways (15) with left thermal window (14)；
The side of half slot of right cross axle (21) is communicated by least two right oil-ways (25) with right thermal window (24).
7. a kind of differential casing of optimization lubrication according to claim 5, it is characterised in that:
The left oil-way (15) and right oil-way (25) are arc groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810023513.2A CN108131434B (en) | 2018-01-10 | 2018-01-10 | A kind of differential casing of optimization lubrication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810023513.2A CN108131434B (en) | 2018-01-10 | 2018-01-10 | A kind of differential casing of optimization lubrication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131434A CN108131434A (en) | 2018-06-08 |
| CN108131434B true CN108131434B (en) | 2019-09-17 |
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| CN201810023513.2A Active CN108131434B (en) | 2018-01-10 | 2018-01-10 | A kind of differential casing of optimization lubrication |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989143A (en) * | 1998-09-28 | 1999-11-23 | Caterpillar Inc. | Arrangement for lubricating a differential assembly of a work machine |
| SE537548C2 (en) * | 2012-09-04 | 2015-06-09 | Scania Cv Ab | Arrangement for lubrication of a differential gear for tandem operation |
| CN206802237U (en) * | 2017-04-28 | 2017-12-26 | 东风商用车有限公司 | A kind of inter-axle differential |
| CN207961448U (en) * | 2018-01-10 | 2018-10-12 | 东风商用车有限公司 | A kind of differential casing of optimization lubrication |
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2018
- 2018-01-10 CN CN201810023513.2A patent/CN108131434B/en active Active
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