CN109578558A - It is a kind of jail support, smooth lubricated type differential assembly - Google Patents
It is a kind of jail support, smooth lubricated type differential assembly Download PDFInfo
- Publication number
- CN109578558A CN109578558A CN201811470795.7A CN201811470795A CN109578558A CN 109578558 A CN109578558 A CN 109578558A CN 201811470795 A CN201811470795 A CN 201811470795A CN 109578558 A CN109578558 A CN 109578558A
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- China
- Prior art keywords
- differential
- cross
- cross axle
- axle
- planetary gear
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/037—Gearboxes for accommodating differential gearings
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a kind of jail supports, smooth lubricated type differential assembly, including differential mechanism left housing (1), differential right casing (2), cross axle long axis (3), cross axle short axle (4), half shaft wheel (6), half shaft wheel pad (7), planetary gear (8), planetary gear pad (9), differential mechanism left bearing (11) and differential mechanism right bearing (12)；Its main feature is that being respectively equipped with milling flat horizontal surface on the cross axle long axis (3) and cross axle short axle (4)；The fixed cross axis fixing sleeve (5) on the cross assemble being made of cross axle long axis (3) and cross axle short axle (4)；Check bolt (10) are fixedly mounted by mounting plane in differential right casing (2), check bolt (10) gos deep into the blind hole of cross axle long axis (3) and cross axle short axle (4)；The differential assembly has greatly reinforced the rigidity of split type cross axle, it ensure that the position precision of semiaxis, planetary gear work, differential mechanism bring exterior part damage of scurrying out because of cross axle is avoided, work operating of the differential assembly inner part in good lubrication is conducive to.
Description
Technical field:
The present invention relates to automotive axle technical field, specifically a kind of jail support, smooth lubricated type differential assembly.
Background technique:
At present for heavy truck differential assembly, existing general expression structure, that is, cross axle is monoblock type, and it is left and right to be assemblied in differential mechanism
Structure between shell, second is " sandwich " structure risen extensively in recent years, as increase main reducing gear driven wheel of differential
Rigidity of support, and the flange mounting surface with differential mechanism left housing is increased on differential right casing, in ordinary construction former in this way from
Dynamic bevel gear, which is only mounted in differential mechanism left housing, to be just changed on two flange faces of left housing and right shell, increases differential in contrast
The support of the right shell of device, the differential mechanism of this sandwich support construction are known as " sandwich " structure differential mechanism in vehicle bridge industry, in this way,
The cross shaft hole of differential carrier just can only be individually located on right shell, and former monolithic construction cross axle, which will be divided into two, to be made into
The split type structure that long and short axis combines.Main problem existing for current this " sandwich " structure differential mechanism includes: first, ten
Word axis be it is split type, there is a problem of that stiffness by itself is insufficient, especially at work differential mechanism transmitting peak torque at the time of, this will
Cross axle bending deformation is directly resulted in, causes semiaxis, planetary gear cooperation precision misalignment, causes to beat tooth or planetary gear and cross axle is burnt
The failure of erosion；Second, cross axle axial limiting mostly uses outside basin tooth or the limit of basin tooth bolt ring packet, but for basin tooth locating distance
Deviate larger so that the case where reaching cross axle outer end face, few from measure for cross axle axial limiting anti-channeling, and cross
Axis, which is once scurried out, will result directly in multiple parts in main reducing gear and smashes destruction, and failure cost is very high；Third, at present cross axle
And planetary gear pad is mostly completely circular structure so that planetary gear pad cannot by rotary stopper, then differential situation lower planetary gear pad with
Between shell there is friction in the moment, easily lead to the wear-out failure of shell, furthermore, to increase the profit between cross axle and planetary gear
Cunning avoids ablation, also has and cross axle is made into the flat structure of milling, but is mostly that milling flat horizontal surface perforation cross axle axial length is total
Range, although there are gaps between the shaft hole matching of cross axle and planetary gear in this way, and also deposited between cross axle and differential casing
In gap, this, which will lead to differential mechanism internal trapped fuel decreased effectiveness, presence in gap under high-speed rotating working condition, makes much
The gear oil of amount gets rid of winged.
Summary of the invention:
The purpose of the present invention is overcoming the shortcomings of above-mentioned prior art, and provide it is a kind of jail support, smooth lubricated type differential assembly；
Mainly solve that cross axle support stiffness existing for existing " sandwich " structure differential mechanism is weak, axial firm limit nothing is effectively arranged
Apply, differential mechanism internal lubrication and planetary gear pad anti-rotation be difficult to the problem of taking into account, to provide effective solution measure.
The technical scheme is that a kind of jail support, smooth lubricated type differential assembly, including differential mechanism left housing, differential
The right shell of device, cross axle long axis, cross axle short axle, half shaft wheel, half shaft wheel pad, planetary gear, planetary gear pad, differential mechanism left bearing and difference
Fast device right bearing；The differential mechanism left housing and differential right casing is connected to form differential by respectively installing end face and seam allowance cooperation
Device housing assembly；Cross assemble is set in along the circumferential direction uniformly distributed cross shaft mounting hole in differential right casing, cross axle is total
It is combined at being matched by cross axle long axis with cross axle short axle；It is set respectively on installation position inside the differential mechanism left housing with differential right casing
Half shaft wheel and half shaft wheel pad；Planetary gear and planetary gear pad, planet are set by cross assemble in the Internal Spherical Surface of differential right casing
Wheel intermeshes with half shaft wheel rotates the differential for realizing two-semiaxle wheel, and planetary gear pad and differential right casing are relatively fixed；In differential
Differential mechanism left bearing and differential mechanism right bearing are set on device housing assembly；It is characterized in that, the cross axle long axis and cross axle
It is radially symmetrical above and below respectively in short axle to be equipped with 2 milling flat horizontal surfaces parallel to each other；By cross axle long axis and cross axle short axle group
At cross assemble on fixed cross axis fixing sleeve, cross axle fixing sleeve be tetragonal body structure；Pass through in differential right casing
Check bolt is fixedly mounted in mounting plane, and check bolt gos deep into the blind hole of cross axle long axis and cross axle short axle.
Further, the planetary gear pad is equipped with the inner hole equal with the cross axle long axis diameter of axle, and inner hole is non-full circle knot
Structure, planetary gear pad are equipped with 2 flat facets of milling being distributed along central symmetry, and two millings of two plan ranges and cross axle long axis are flat
Face is equidistant.
A kind of jail of the present invention supports, compared with the prior art smooth lubricated type differential assembly has essence outstanding
Property feature and marked improvement:
1, cross axle fixing sleeve is increased on the cross assemble that the assembly of long and short axis is composed, this will greatly increase fission
The rigidity of support of formula cross axle reduces rigid deformation caused by transmitting large torque to greatest extent, keeps planetary gear and half shaft wheel
Operating position precision, avoid as deform it is unsceptered caused by ablation and beat tooth problem, and the presence of cross axle fixing sleeve is also big
The assembly intensity of cross axle is increased greatly；
2, cross axle axial direction check bolt is arranged inside differential mechanism, the exterior space due to differential assembly inner space affluence
The problem of hardly possible arrangement is easily interfered, suitably increase check bolt by specification, so that the restraining ability to cross axle is effectively increased,
It avoids the problem that differential mechanism internal damage is scurried out down to cross axle to expand breakdown loss；
3, cross axle is set as band milling flat horizontal surface and at end and differential casing cooperation is completely circular structure, not only can do
To planetary gear pad anti-rotation bring its between differential casing without friction, can also make between cross axle and planetary gear exist lubrication need
The gap wanted, and make to block as far as possible at cross axle and differential casing cooperation and lubricating oil is not allowed to throw away；And cross axle long axis one
Holding with milling flat horizontal surface is also the needs for assembling planetary gear pad.
Detailed description of the invention:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is differential case assembly structural schematic diagram of the invention；
Fig. 3 is cross assemble structural schematic diagram of the invention；
Fig. 4 is the structural schematic diagram of cross axle and fixing sleeve assembly and differential right casing of the invention.
Specific embodiment:
For a better understanding and implementation, providing specific embodiment with reference to the accompanying drawing, the present invention will be described in detail；Illustrated embodiment
For explaining only the invention, it is not intended to limit the scope of the present invention.
Embodiment 1 is processed into differential mechanism left housing 1, differential right casing 2, ten referring to Fig. 1,2,3 and 4 according to the design needs
It is word axial length axis 3, cross axle short axle 4, cross axle fixing sleeve 5, half shaft wheel 6, half shaft wheel pad 7, planetary gear 8, planetary gear pad 9, locking
Bolt 10, differential mechanism left bearing 11 and differential mechanism right bearing 12；It is machined with differential case assembly respectively in differential mechanism left housing 1
End face and male half coupling, half shaft wheel and gasket installation position and differential bearing installation position are installed；It is processed respectively on differential right casing 2
There are differential case assembly installation end face and inner stopper, half shaft wheel and gasket installation position and differential bearing installation position, also processes
There are Internal Spherical Surface and quantity for planetary gear and gasket installation for 4 and along the circumferential direction uniformly distributed cross shaft mounting hole, ten
The intersection point of word shaft mounting hole center line is overlapped with the centre of sphere of Internal Spherical Surface, is pacified in addition, being also machined on differential right casing 2 with cross axle
The orthogonal and penetrating check bolt hole in hole is filled, check bolt hole same number is 4 and is uniformly distributed along the circumference, check bolt hole
Lower end is connected with cross shaft mounting hole, and upper end is located on check bolt installation end face；By differential mechanism left housing 1 and differential right casing
2 are connected by respectively installation end face and seam allowance cooperation assemblies differential case assembly；The diameter of axle of cross axle long axis 3 is processed
At identical as the aperture of cross shaft mounting hole of differential right casing 2, and it is symmetrily processed with along axial center two sides 2 big
Small equal square groove is also symmetrically respectively machined with 1 blind hole at both ends, and 2 blind hole axis are parallel to each other, passes through cross axle long axis
3 axial lines and parallel with square groove bottom surface, cross axle long axis 3 is radially symmetrical above and below be machined with 2 it is parallel to each other and with square groove bottom
The vertical milling flat horizontal surface in face, an other end is led to not to the end in 2 milling flat horizontal surface one end on cross axle long axis 3, but and end face
There are certain axial distances；The diameter of axle of cross axle short axle 4 is processed into identical as the diameter of axle of cross axle long axis 3, one end adds
Work has square key, the square key along short axle central symmetry, the opposite side distance of the square groove of opposite side distance and depth and cross axle long axis 3 and
Depth dimensions are identical, and the other end is machined with 1 blind hole, blind hole center line by the center line of cross axle short axle 4 and with square key top
Face is parallel, and cross axle short axle 4 is radially symmetrical above and below to be machined with 2 milling flat horizontal surfaces parallel to each other and vertical with blind hole center, and 2
A milling flat horizontal surface leads to head with the strong one end in side in cross axle short axle 4, not to the end with blind hole one end, but and end face there are
Certain axial distance, 4 quantity of cross axle short axle 2；Cross axle long axis 3 and cross axle short axle 4 are cooperated by sunk key and assembled
Cross assemble is formed, it is circumferentially ipsilateral on cross assemble uniformly to have 4 equal blind holes of hole depth, 2 pairs of opposite blind holes
Pitch-row it is equal and equal with 2 pairs of check bolt hole pitch-rows of differential right casing 2, revolution half of the cross assemble along center
Diameter is equal with the radius of gyration of differential right casing 2；Cross axle fixing sleeve 5 is processed as tetragonal body structure, above and below is square
And 1 through-hole is vertically machined with along center, remaining 4 side is uniformly machined with 4 and cross axle long axis 3 and cross axle short axle 4
Aperture is equal and the mounting hole of orthogonal connection, and it is solid that cross axle long axis 3 and cross axle short axle 4 can be fixed on cross axle
Surely set 5 on form cross axle fixing sleeve assembly, and the center of cross axle fixing sleeve with through-hole so as to allow spider center position
It sets and is sufficiently connected to the external world；Half shaft wheel 6 and half shaft wheel pad 7 quantity each 2, pass through differential mechanism left housing 1 and differential right casing 2 respectively
Half shaft wheel and gasket installation position be assemblied on differential case assembly；8 quantity of planetary gear is 4, is machined with thereon and cross
The equal inner hole of 3 diameter of axle of axial length axis, padded with planetary gear the equal spherical outside surface of 9 inner sphere radius and it is equal with 6 modulus of half shaft wheel can
With the gear teeth that mutual mating engagement uses, planetary gear pad 9 is machined with the inner hole equal with 3 diameter of axle of cross axle long axis, and inner hole is non-
Completely circular structure is machined with 2 flat facets of milling along central symmetry distribution, the two flat facet distances of milling and cross axle long axis 3
Two milling flat horizontal surfaces are equidistant, and are machined with the spherical outside surface equal with 2 Internal Spherical Surface diameter of differential right casing, planetary gear 8 and planetary gear
For pad 9 through cross axle fixing sleeve general assembly in the component of differential mechanism left housing 1 and differential right casing 2, planetary gear 8 can be with half
Axis wheel 6, which intermeshes, rotates the differential of realization two-semiaxle wheel, and planetary gear pad 9 cannot be in cross axle due to milling the presence of flat facet
It is upper rotation but it is relatively fixed with differential right casing 2；The outer diameter of check bolt 10 is processed into the locking spiral shell with differential right casing 2
Keyhole internal diameter is identical, is fixed on differential right casing 2 by mounting plane, and cross axle long axis 3 and cross are goed deep into lower end
In the blind hole of axis short axle 4, firm axial limiting is increased to cross axle long axis 3 and cross axle short axle 4；By differential mechanism left bearing
11 and differential mechanism right bearing 12 be fixed on differential case assembly by the bearing installation position of two housings；By differential mechanism
The driven wheel of differential of left housing 1 and differential right casing 2 and axle main speed reducer is fixed on one by one group of radially uniformly distributed bolt
Rise, that is, be made it is a kind of it is auxiliary support, help lubricated type differential assembly.
A kind of jail support of the present invention, smooth lubricated type differential assembly, when work, in differential mechanism left housing 1 and differential
It is bolted fit on driven wheel of differential by one group on the flange face that the right shell 2 of device cooperates, then this differential assembly is passed through into difference
Fast device left bearing 11 and differential mechanism right bearing 12 are assembled on the main reducing gear of drive axle, after drive axle entrucking, main reducing gear
Interior to fill enough gear oils, these gear oils pass through the oil being interlinked to the outside interior in differential mechanism left housing 1 and 2 shell of differential right casing
Hole flows into inside differential mechanism, to the lubrication to internal relative rotation part.When the vehicle is running, driven wheel of differential is because by whole
The torque that vehicle input terminal and drive bevel gear transmit will drive differential assembly whole right in differential mechanism left bearing 11 and differential mechanism
It is rotated on bearing 12, differential assembly passes torque by driving torque by cross assemble and mounted in 4 planetary gears 8 thereon
It passs 6,2 half shaft wheels 6 of half shaft wheel and torque and revolving speed is passed through into the left and right half of assembly on it for torque and revolving speed respectively again
Arranged on left and right sides wheel is passed to, the course of work of power train is realized.When vehicle is just the same along straight-line travelling or so wheel speed
When, differential assembly rotates integrally, and two-semiaxle wheel 6 is identical as differential casing revolving speed, without relative rotation between the two, planet at this time
Wheel 8 is opposing stationary on cross axle, and the two is equally without relative rotation；And when vehicle turning is so that speed difference occurs in left and right wheel
When, 4 planetary gears 8 with differential assembly other than integrally revolving, the autobiography also on cross axle, planetary gear pad 9 and differential carrier
Body is opposing stationary, and only there are the frictions of face face between planetary gear 8, but since differential mechanism internal gear oil oil mass is sufficient, oil circuit is unobstructed,
This frictional force is very little, and due to the presence of milling flat horizontal surface between cross axle and planetary gear 8, same lubrication is good；At this point, left
There is relative rotation in right two-semiaxle 6, and between differential casing also because causing with the meshing relation of planetary gear 8 between the two
Occur that relative rotation speed is poor, that is, carries out " differential " operation of differential mechanism.When cross axle transmitting large torque, since cross axle is solid
Surely the presence of set 5, considerably increases the assembly rigidity of cross axle, reduces deformation, avoids because of cross axle deformation bring half
The running position deviation of axis wheel, planetary gear and cross between centers, causes the generation of planetary gear ablation problem.Also, check bolt 10
Presence make cross axle long axis 3 and the axial limiting of cross axle short axle 4 firm, make their stable working state reliable, and
It avoids because cross axle differential mechanism bring exterior part of scurrying out smashes failure, results in greater loss.
Claims (2)
1. a kind of jail support, smooth lubricated type differential assembly, including differential mechanism left housing (1), differential right casing (2), cross axial length
Axis (3), cross axle short axle (4), half shaft wheel (6), half shaft wheel pad (7), planetary gear (8), planetary gear pad (9), differential mechanism left bearing
(11) and differential mechanism right bearing (12)；The differential mechanism left housing (1) and differential right casing (2) is by respectively installing end face and stopping
Mouth cooperation is connected to form differential case assembly；In differential right casing (2) in along the circumferential direction uniformly distributed cross shaft mounting hole
If cross assemble, cross assemble, which is matched by cross axle long axis (3) with cross axle short axle (4), to be combined into；In differential mechanism left housing (1)
Half shaft wheel (6) and half shaft wheel pad (7) are set respectively on the internal installation position of differential right casing (2)；In the interior ball of differential right casing (2)
Planetary gear (8) and planetary gear pad (9) are set by cross assemble on face, planetary gear (8) and half shaft wheel (6), which are intermeshed, rotates reality
The differential of existing two-semiaxle wheel, planetary gear pad (9) and differential right casing (2) are relatively fixed；Differential is set on differential case assembly
Device left bearing (11) and differential mechanism right bearing (12)；It is characterized in that, the cross axle long axis (3) and cross axle short axle (4)
Upper difference is radially symmetrical above and below to be equipped with 2 milling flat horizontal surfaces parallel to each other；By cross axle long axis (3) and cross axle short axle (4)
Fixed cross axis fixing sleeve (5) on the cross assemble of composition, cross axle fixing sleeve (5) are tetragonal body structure；On the differential mechanism right side
Check bolt (10) are fixedly mounted by mounting plane in shell (2), check bolt (10) gos deep into cross axle long axis (3) and cross axle
In the blind hole of short axle (4).
2. a kind of jail support according to claim 1, smooth lubricated type differential assembly, which is characterized in that the planet
Wheel pad (9) is equipped with the inner hole equal with cross axle long axis (3) diameter of axle, and inner hole is non-completely circular structure, and planetary gear pad (9) is equipped in
2 symmetrical flat facets of milling of the heart, two milling flat horizontal surfaces of two plan ranges and cross axle long axis (3) are equidistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470795.7A CN109578558A (en) | 2018-12-04 | 2018-12-04 | It is a kind of jail support, smooth lubricated type differential assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470795.7A CN109578558A (en) | 2018-12-04 | 2018-12-04 | It is a kind of jail support, smooth lubricated type differential assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109578558A true CN109578558A (en) | 2019-04-05 |
Family
ID=65927069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811470795.7A Withdrawn CN109578558A (en) | 2018-12-04 | 2018-12-04 | It is a kind of jail support, smooth lubricated type differential assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973611A (en) * | 2019-04-22 | 2019-07-05 | 一汽解放汽车有限公司 | Differential assembly and assembly method between a kind of novel commercial wheel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004003643A1 (en) * | 2004-01-24 | 2005-08-11 | Zf Friedrichshafen Ag | New design of differential for vehicle, comprising asymmetrically joined basket and lid |
| US20050282677A1 (en) * | 2002-12-24 | 2005-12-22 | Yanagawa Seiki Co., Ltd. | Differential |
| CN101344163A (en) * | 2007-07-10 | 2009-01-14 | 福特环球技术公司 | Differential mechanism assembly |
| DE102014221408A1 (en) * | 2014-10-22 | 2016-04-28 | Zf Friedrichshafen Ag | differential |
| CN205780696U (en) * | 2016-05-23 | 2016-12-07 | 上海汇众汽车制造有限公司 | Satellite differential |
| US20180080537A1 (en) * | 2016-09-21 | 2018-03-22 | Meritor Heavy Vehicle Systems Cameri Spa | Differential Gear Assembly and Components Thereof |
-
2018
- 2018-12-04 CN CN201811470795.7A patent/CN109578558A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050282677A1 (en) * | 2002-12-24 | 2005-12-22 | Yanagawa Seiki Co., Ltd. | Differential |
| DE102004003643A1 (en) * | 2004-01-24 | 2005-08-11 | Zf Friedrichshafen Ag | New design of differential for vehicle, comprising asymmetrically joined basket and lid |
| CN101344163A (en) * | 2007-07-10 | 2009-01-14 | 福特环球技术公司 | Differential mechanism assembly |
| DE102014221408A1 (en) * | 2014-10-22 | 2016-04-28 | Zf Friedrichshafen Ag | differential |
| CN205780696U (en) * | 2016-05-23 | 2016-12-07 | 上海汇众汽车制造有限公司 | Satellite differential |
| US20180080537A1 (en) * | 2016-09-21 | 2018-03-22 | Meritor Heavy Vehicle Systems Cameri Spa | Differential Gear Assembly and Components Thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973611A (en) * | 2019-04-22 | 2019-07-05 | 一汽解放汽车有限公司 | Differential assembly and assembly method between a kind of novel commercial wheel |
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Application publication date: 20190405 |