CN116412237A - Differential mechanism assembly between drive axle wheels - Google Patents
Differential mechanism assembly between drive axle wheels Download PDFInfo
- Publication number
- CN116412237A CN116412237A CN202310182487.9A CN202310182487A CN116412237A CN 116412237 A CN116412237 A CN 116412237A CN 202310182487 A CN202310182487 A CN 202310182487A CN 116412237 A CN116412237 A CN 116412237A
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- China
- Prior art keywords
- differential
- weld
- differential case
- differential mechanism
- inter
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- 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
- 238000003466 welding Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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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
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention provides a differential assembly between drive axles, which comprises a left differential shell, a right differential shell and a driven bevel gear, wherein the left differential shell and the right differential shell are connected through boss positioning to form a first connecting part, the driven bevel gear and the right differential shell are connected through boss positioning to form a second connecting part, the first connecting part and the second connecting part are welded, the left differential shell and the right differential shell are in interference fit in boss fit, and the driven bevel gear and the right differential shell are in clearance fit in boss fit. The differential mechanism assembly can overcome the defects that in the prior art, a left differential mechanism shell, a right differential mechanism shell and a driven bevel gear of the differential mechanism assembly are connected by 15-20 bolts, so that the differential mechanism assembly is heavy in weight, and the bolts are easy to loosen and withdraw, so that the differential mechanism assembly is invalid.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to a differential mechanism assembly between driving axle wheels.
Background
The inter-wheel differential assembly is used as one of important components of a drive axle, and has the functions of enabling left and right wheels to rotate at different rotation speeds when an automobile turns and runs on an uneven road surface so as to ensure that the wheels of the automobile driven at two sides do pure rolling, reduce tire wear and keep balance of the automobile. The left differential shell, the right differential shell and the driven bevel gear in the conventional inter-wheel differential assembly are connected by adopting 15-20 bolts, the differential assembly adopting the structure is heavy in weight, and the bolts are easy to loosen and withdraw, so that the differential assembly fails.
Disclosure of Invention
Therefore, the invention provides the inter-wheel differential assembly of the drive axle, which can overcome the defects that in the prior art, the left differential shell, the right differential shell and the driven bevel gear of the inter-wheel differential assembly are connected by 15-20 bolts, so that the differential assembly is heavy in weight, and the bolts are easy to loosen and withdraw, so that the differential assembly is invalid.
In order to solve the problems, the invention provides a differential assembly between drive axles, which comprises a left differential shell, a right differential shell and a driven bevel gear, wherein the left differential shell and the right differential shell are connected through boss positioning to form a first connecting part, the driven bevel gear and the right differential shell are connected through boss positioning to form a second connecting part, the first connecting part and the second connecting part are welded, the left differential shell and the right differential shell are in interference fit in boss fit, and the driven bevel gear and the right differential shell are in clearance fit in boss fit.
In some embodiments, the first connection portion welds form a first weld, the second connection portion welds form a second weld, and both the first weld and the second weld are V-shaped perimeter welds.
In some embodiments, the first weld and the second weld are disposed in parallel and have a radial tangential plane centerline that is 35 ° to 50 ° from the axial direction of the short cross of the inter-wheel differential assembly.
In some embodiments, the left differential case and the first connection have a first cavity therebetween, and the right differential case and the second connection have a second cavity therebetween.
In some embodiments, the left differential case has a first vent and the right differential case has a second vent.
In some embodiments, the left differential case has a left differential case end face disposed parallel to the connection face of the first connection portion, and the right differential case has a right differential case end face disposed parallel to the connection face of the second connection portion.
In some embodiments, the driven bevel gear has a bevel face, which is a wavy line structure and is disposed parallel to the connection face of the first connection portion.
According to the differential mechanism assembly between the driving axles, the left differential mechanism shell, the right differential mechanism shell and the driven bevel gears adopt a laser welding technology, so that bolts, corresponding bolt holes and threaded holes in the original structure are omitted, the weight of the differential mechanism assembly is reduced, the processing efficiency is improved, the reliability of the differential mechanism assembly is also improved, meanwhile, the oil stirring loss caused by the exposure of the bolt heads is eliminated, the smooth outer surface of the differential mechanism shell has smaller fluid resistance, and the transmission efficiency of the main speed reducer can be improved.
Drawings
FIG. 1 is a schematic diagram of an inter-axle differential assembly according to an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1 of an inter-axle differential assembly according to an embodiment of the present invention;
FIG. 3 is a schematic view of a short cross axle of an inter-axle differential assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a long cross axle of an inter-axle differential assembly according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the inter-axle differential assembly of FIG. 1, shown at A, in accordance with an embodiment of the present invention;
FIG. 6 is an enlarged view of the inter-axle differential assembly of FIG. 1 at B in accordance with an embodiment of the present invention.
The reference numerals are expressed as:
1. a passive bevel gear; 11. an inclined plane; 2. a right differential case; 21. a right differential case end face; 3. a left differential case; 31. a left differential case end face; 4. a side gear spacer; 5. a side gear; 6. a short cross; 61. a convex semicircular structure; 62. rectangular symmetrical bosses; 7. planetary gear gaskets; 8. a planetary gear; 9. a long cross shaft; 91. rectangular grooves; 101. a first cavity; 102. a second cavity; 103. a first weld; 104. a second weld; 105. a first exhaust hole; 106. and a second exhaust hole.
Detailed Description
Referring to fig. 1 to 6 in combination, according to an embodiment of the present invention, there is provided an inter-drive axle differential assembly including a left differential case 3, a right differential case 2, and a driven bevel gear 1, wherein the left differential case 3 and the right differential case 2 are connected to form a first connection portion by boss positioning, the driven bevel gear 1 and the right differential case 2 are connected to form a second connection portion by boss positioning, the first connection portion and the second connection portion are welded, the left differential case 3 and the right differential case 2 are in boss fit to be interference fit, and the driven bevel gear 1 and the right differential case 2 are in boss fit to be clearance fit. The left differential case 3 and the right differential case 2 are in interference fit with each other through boss fit, so that coaxiality of left and right differential bearings can be guaranteed. The welded connection mode is adopted, so that a differential case connecting bolt in the original structure is omitted, the differential case is designed in a lightweight manner, and the whole bridge weight reduction of 5-8 kg can be realized. Meanwhile, the processing of bolt holes on the differential case and the driven bevel gear is omitted, and the processing efficiency of each part is improved by about 5% -10%. The welding mode is used for replacing the bolt connection, so that faults of the differential mechanism assembly caused by loosening and withdrawing of the differential mechanism shell bolts can be avoided, and the reliability of the differential mechanism assembly is improved. Meanwhile, the oil stirring loss caused by the exposure of the bolt head is eliminated, and the outer surface of the smooth differential shell has smaller fluid resistance, so that the transmission efficiency of the main speed reducer can be improved.
Specifically, the differential assembly between the drive axle wheels further comprises a long cross shaft 9, a short cross shaft 6, a planetary gear 8, a planetary gear gasket 7, a half shaft gear 5 and a half shaft gear gasket 4, one end of the short cross shaft 6 is a convex semicircular structure 61, the other end of the short cross shaft is a rectangular symmetrical boss 62, a symmetrical rectangular groove 91 is formed in the middle of the long cross shaft 9, and the rectangular symmetrical boss 62 is matched with the symmetrical rectangular groove 91 so that the rectangular symmetrical boss 62 of the short cross shaft 6 penetrates into the rectangular groove 91 of the long cross shaft 9 to form a cross shaft.
In a specific embodiment, the first connection portion is welded to form a first weld 103, the second connection portion is welded to form a second weld 104, and both the first weld 103 and the second weld 104 are V-shaped circumferential welds.
In a specific embodiment, the first weld 103 and the second weld 104 are disposed in parallel, and have a radial tangential plane centerline that forms an axial angle of 35 ° to 50 ° with the short cross 6 of the inter-wheel differential assembly. The first weld 103 and the second weld are parallel, and the time for changing the angle of the welding gun can be saved.
In a specific embodiment, a first cavity 101 is provided between the left differential case 3 and the first connecting portion, and a second cavity 102 is provided between the right differential case 2 and the second connecting portion. Providing the first cavity 101 and the second cavity 102 may reduce stress concentration at the welded site.
In a specific embodiment, the left differential case 3 has a first vent 105 and the right differential case 2 has a second vent 106. The first and second vent holes 105 and 106 may vent the gas generated by welding in the first and second cavities 101 and 102.
In a specific embodiment, the left differential case 3 has a left differential case end surface 31, the left differential case end surface 31 is disposed in parallel with the connection surface of the first connection portion, the right differential case 2 has a right differential case end surface 21, and the right differential case end surface 21 is disposed in parallel with the connection surface of the second connection portion. The parallel arrangement can facilitate nondestructive flaw detection on the weld joint, and ensure welding strength.
In a specific embodiment, the driven bevel gear 1 has an inclined surface 11, and the inclined surface 11 is in a wavy line structure and is disposed parallel to the connection surface of the first connection portion.
Specifically, the connection surface of the first connection portion is disposed approximately parallel to the inclined surface 11. By adopting the approximate parallel arrangement, the inclined plane can effectively avoid welding guns, and interference is avoided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (7)
1. The utility model provides a differential mechanism assembly between transaxle wheel, its characterized in that, includes left differential mechanism shell (3), right differential mechanism shell (2), driven bevel gear (1), left differential mechanism shell (3) with right differential mechanism shell (2) are through boss location connection formation first connecting portion, driven bevel gear (1) with right differential mechanism shell (2) are through boss location connection formation second connecting portion, first connecting portion with second connecting portion are the welding, left differential mechanism shell (3) with right differential mechanism shell (2) boss cooperation is interference fit, driven bevel gear (1) with right differential mechanism shell (2) boss cooperation is clearance fit.
2. The transaxle inter-wheel differential assembly of claim 1, wherein the first connection weld forms a first weld (103), the second connection weld forms a second weld (104), and both the first weld (103) and the second weld (104) are V-shaped circumferential welds.
3. The transaxle inter-wheel differential assembly of claim 2, wherein the first weld (103) and the second weld (104) are disposed in parallel and have a radial tangential centerline at an axial angle of 35 ° to 50 ° to the short cross-shaft (6) of the inter-wheel differential assembly.
4. The transaxle inter-wheel differential assembly of claim 1, wherein the left differential case (3) has a first cavity (101) between the first connection and the right differential case (2) has a second cavity (102) between the second connection.
5. The transaxle inter-wheel differential assembly of claim 1, wherein the left differential case (3) has a first vent hole (105) and the right differential case (2) has a second vent hole (106).
6. The transaxle inter-wheel differential assembly according to claim 1, wherein the left differential case (3) has a left differential case end surface (31), the left differential case end surface (31) being disposed in parallel with the connecting surface of the first connecting portion, the right differential case (2) having a right differential case end surface (21), the right differential case end surface (21) being disposed in parallel with the connecting surface of the second connecting portion.
7. The drive axle inter-wheel differential assembly according to claim 1, wherein the driven bevel gear (1) has an inclined surface (11), and the inclined surface (11) is of a wavy line structure and is arranged in parallel with the connecting surface of the first connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310182487.9A CN116412237A (en) | 2023-03-01 | 2023-03-01 | Differential mechanism assembly between drive axle wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310182487.9A CN116412237A (en) | 2023-03-01 | 2023-03-01 | Differential mechanism assembly between drive axle wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116412237A true CN116412237A (en) | 2023-07-11 |
Family
ID=87057314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310182487.9A Pending CN116412237A (en) | 2023-03-01 | 2023-03-01 | Differential mechanism assembly between drive axle wheels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116412237A (en) |
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2023
- 2023-03-01 CN CN202310182487.9A patent/CN116412237A/en active Pending
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