CN200981502Y - Rear axle main reducing gear assembly for MPV/SUV vehicle - Google Patents
Rear axle main reducing gear assembly for MPV/SUV vehicle Download PDFInfo
- Publication number
- CN200981502Y CN200981502Y CN 200620161323 CN200620161323U CN200981502Y CN 200981502 Y CN200981502 Y CN 200981502Y CN 200620161323 CN200620161323 CN 200620161323 CN 200620161323 U CN200620161323 U CN 200620161323U CN 200981502 Y CN200981502 Y CN 200981502Y
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- axle
- gear
- friction plate
- mpv
- rear axle
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Abstract
The utility model relates to a main reducing gear assembly applied on the rear axle of the MPV/SUV cars being characterized in that a pair of preloading springs 13 are provided between two axle shaft gears 11 of a used antiskid differential gear, each of the two ends of the preloading springs is provided with a spring baffle plate 14 respectively, a set of alternative-ranged driving friction plates 9 and driven friction plates 10 are provided respectively on the left axle shaft gear 11 and the right axle shaft gear 11 , and a driving axle 1 is sleeved by a compressed separation sleeve. The utility model has the advantages that the driving friction plates 9, the driven friction plates and the preloading spring realize stable and safe self-lock antiskid of the differential gear when the left and right axle shaft gears existing a rotational speed which results in that the torsion of the rear axle half-axle has metastasis, so most torsions and even total torsions are distributed to one side of a driving wheel which is provided with better adhesion conditions, therefore improving the passing ability, the tractive characteristics and the running safety of the cars. In addition, the use of the compressed separation sleeve makes the correlation tolerance on the fixing dimension chain be widened properly, and facilitates the economics of processing and reducing labour intensity.
Description
Technical field:
The utility model relates to a kind of main gearbox assembly of automobile rear driving axle, particularly is used for the rear-end gear reduction assembly of MPV/SUV car.
Background technology:
At present, the main gearbox assembly that domestic and international automobile drive axle manufacturer is adopted especially for the rear-end gear reduction assembly of MPV/SUV car, all is to adopt common main gearbox assembly, and the open differential assembly that it adopts can only can not change moment of torsion by differential.Since automobile by ice and snow road or muddy road surface the time because wheel and the reduction of ground-surface adhesion value, particularly trackslip when stopping because of a certain drive wheels when automobile, lost original impulse force, recurrence need overcome than the much bigger resistance that travels during the step, thereby drive wheels need bring into play bigger tractive force, and big like this tractive force often can not be born in the ground of at this moment being destroyed owing to trackslipping.Extensively retrieve at the problems referred to above, still find no the anti-case of solution of effect.
The utility model content:
The purpose of this utility model is exactly in order to solve automobile owing to a side drive wheel the trackslip problem of stopping and the rear-end gear reduction assembly of a kind of MPV/SUV of being used for car of design-calculated, it can be taken turns at a certain sidecar of automobile can be locked with diff when occurring trackslipping, the left and right driving wheel can transmit the whole torques by the adhesive ability decision like this, can make automobile make the best of one's way out from mire or ice and snow so easily.
The technical scheme that the utility model adopted is:
A kind of rear-end gear reduction assembly that is used for MPV or SUV car, it comprises bevel housing and bonded assembly axle drive shaft, be provided with diff in the bevel housing, axle drive shaft and differential gear engagement, it is characterized in that described diff adopts anti-skid final drive, be arranged with the resiliency compressible spacer on the axle drive shaft, the two ends of resiliency compressible spacer cooperate with axle drive shaft backup bearing in the bevel housing respectively.
Be provided with a pair of preloading spring between two axle side gears in the described anti-skid final drive, the two ends of preloading spring are respectively equipped with a spring stop that matches, each spring stop forms pretension with the left and right half gear respectively and cooperates, be respectively equipped with one group of spaced active friction plate and from movable friction plate at the left and right half gear, link to each other with axle side gear from movable friction plate, active friction plate links to each other with the anti-skid final drive housing.
Owing to adopted technique scheme, when automobile is kept straight on, when two-semiaxle does not have speed discrepancy, passed to torque mean allocation between left and right half of differential gear box.When automobile turning or a certain side drive wheel slip, the left and right driving wheel produces speed discrepancy.This moment diff rotation speed n
0Rotation speed n with the left and right half gear
1, n
2All unequal, work as n
1＞n
2The time, n is then arranged
1＞n
0＞n
2Rotation speed relation.Because existence and principal and subordinate, movable friction plate and the thrust disc of speed discrepancy are compacted, at this moment will produce friction moment respectively between the principal and subordinate of and arranged on left and right sides, movable friction plate, thrust disc and the differential gear box.Its size is relevant with the size of the friction coefficient of these friction elements and thrust, the direction of friction moment then with n
1With n
0Or n
2With n
0Between relative rotation speed relevant.Be not difficult to find out: the friction moment direction of taking turns a side fast is opposite with the hand of rotation of fast runner, estimates its value for negative; And the friction moment direction of low-rotate speed one side is identical with the hand of rotation of low-rotate speed, estimates its value for just.This situation makes the drive torque of the drive torque of slow-speed wheel greater than fast runner just as the part drive torque is transferred to the slow-speed wheel by quick wheel.So also just improved the skid resistance of automobile.
The pretension that the rear-end gear reduction main pinion holds is very big to the performance impact of whole bridge.Use the rigidity spacer that main pinion is held pretension and bring very burden, often will try to add repeatedly pad repeatedly and just can adjust to suitable predetermincd tension, reduce production efficiency, increase labour intensity.And under the inappropriate situation of predetermincd tension, can bring serious problem.Predetermincd tension is excessive, can reduce driving efficiency, causes bearing heating, influences bearing life, even burns to death.If predetermincd tension is too small, can cause main pinion to hold end float misalignment, influence is main is meshed by tooth, even beats tooth.Use resiliency compressible spacer of the present utility model, the problems referred to above just are readily solved, even the relative tolerance on dimensional chain for assembly can relax, and help Economics of Processing.
The utility model compared with prior art has following beneficial effect:
1, the active friction plate of being set up in the anti-skid final drive of alternately installing, from movable friction plate and preloading spring, when there is speed discrepancy in the left and right sides of back axle semiaxis, rear axle shaft torque meeting is shifted, realized the self-locking skidproof of diff stability and safety, can be implemented in left and right sidesing driving wheel adheres to not simultaneously on ground, manage to make most of torque, or even all torque distribution is adhered to the reasonable side drive wheel of condition, thereby improved crossing ability, traction property and the driving safety of automobile.
2, secondly be installation form and the installation dimension that has adopted the homotype open differential identical, can realize the choosing dress, thereby have good commonality and interchangeability.Work makes the manipulation that does not need chaufeur, can carry out non-slip operation automatically according to condition of road surface voluntarily.Integral structure is very compact succinct, and anufacturability is good, and cost is moderate.
3, the use of compressible spacer makes the relative tolerance on the dimensional chain for assembly suitably to relax, and helps Economics of Processing, reduces labor intensity.
Description of drawings:
Fig. 1 is the cutaway view of rear-end gear reduction assembly of the present utility model:
Fig. 2 is the cutaway view of the anti-skid final drive that adopts among Fig. 1;
Fig. 3 is the cutaway view of the compressible spacer among Fig. 1;
Fig. 4 is the distressed structure of the compressible spacer of Fig. 3;
Fig. 5 is the cutaway view of the axle side gear among Fig. 2;
Fig. 6 is the front view from movable friction plate among Fig. 2;
Fig. 7 is the front view of the spring stop among Fig. 2;
Fig. 8 is the birds-eye view among Fig. 7;
Fig. 9 is the front view of the active friction plate among Fig. 2;
Figure 10 is the cutaway view of the compressible spacer among Fig. 2;
The specific embodiment:
Main gearbox assembly of the present utility model mainly is to be made of following three parts: 1. drive shaft assembly, 2. anti-skid final drive assembly, 3. final drive casing.
One, drive shaft assembly:
Drive shaft assembly is to be made of axle drive shaft 1, driving gear 7, driving gear neck bearing 6, driving gear outer bearing 3, compressible spacer 5, axle drive shaft flange assembly 2, the structure of wherein compressible spacer 5 as shown in Figure 3, it has one section conical section 5a, has the certain elastic deformation ability when compressible spacer 5 pressurizeds.Compressible spacer 5 also can be a structure shown in Figure 4, and its middle part is provided with bossing, also has the certain elastic deformation ability during pressurized.
Two, slip differential assembly:
The utility model is the further improvement to existing open differential.
For overcoming the deficiency of existing open differential, the utility model provides a kind of left and right sidesing driving wheel that is implemented in to adhere to not simultaneously on ground, manage to make most of torque, or even all torque distribution is adhered to the reasonable side drive wheel of condition, thereby improved the anti-skid final drive of crossing ability, traction property and the driving safety of automobile.
This automobile-used anti-skid final drive, as shown in Figure 2, at two a minute unification is constituted in the diff shell 16 formed housing inner cylinder cavitys, two rear axle shaft gears 11 about being equipped with symmetrically, be arranged with a pair of spring stop 14 between two rear axle shaft gears 11, two coil springs 13 are housed between two spring stops, principal and subordinate's movable friction plate 9 that symmetry is equipped with friction lining guide block 15 and alternately installs on the left and right sides rear axle shaft gear 11 axial outer cylinders, 10, active friction plate 9 is connected with diff shell 16, be connected cooperation from 10 of movable friction plates with rear axle shaft gear 11, be provided with the planetary wheel 12 that compensating-gear shaft 17 matches in the housing 16.
Three, final drive casing, as shown in Figure 1, axle drive shaft 1 and backup bearing 3,6 thereof are equipped with in final drive casing 4 tops, are provided with anti-skid final drive in the lower lumen, the diff two ends are provided with bearing and cooperate with final drive casing 4, main gear 7 on the axle drive shaft 1 and 18 engagements of the gear of anti-skid final drive.
Above-mentioned from movable friction plate 10 as shown in Figure 6, wherein be provided with spline 10a, it matches with spline 11a on the rear axle shaft gear 11, active friction plate 9 as shown in Figure 9, which is provided with a pair of projection, after principal and subordinate's movable friction plate 9,10 was alternately arranged, the projection on the active friction plate 9 was stuck between the flange 15a in the friction lining guide block 15, and friction lining guide block 15 is provided with in the differential casing.Spring stop 14 is shown in Fig. 7, protruding 8, and its center is provided with that hole 14c, two ends are respectively equipped with spring perch 14a, upper and lower side is respectively equipped with the breach 14b that passes through for compensating-gear shaft 17.
Anti-skid final drive assembly working process is as follows: when the back axle left and right sides semiaxis in rear axle shaft gear 11 axis holes does not have speed discrepancy, torque mean allocation on the semiaxis of the back axle left and right sides of diff shell 16 is passed in planetary wheel 12 not rotations by driving system by driving engine.Torque this moment is to pass to back axle left and right sides semiaxis through compensating-gear shaft 17, planetary wheel 2, rear axle shaft gear 11; When there is speed discrepancy in back axle left and right sides semiaxis, planetary wheel 12 rotations, the torque of passing to diff shell 16 passes to back axle left and right sides semiaxis by two lines.One the tunnel is to pass to rear axle shaft through compensating-gear shaft 17, planetary wheel 12, rear axle shaft gear 11; Another road is then passed through active friction plate 9, is passed to rear axle shaft from movable friction plate 10, rear axle shaft gear 12.Because the active friction plate 9 that matches with diff shell 16 and what match with rear axle shaft gear 12 must be that rotating speed is different from movable friction plate 10, and compensating-gear shaft 17 matches with differential gear box, therefore there is the active friction plate 9 of relative rotation and transmitted the pressing force of the spring that comes from axle side gear 11 and compress from movable friction plate 10, produce friction moment, be delivered on the semiaxis of the back axle left and right sides by rear axle shaft gear 11 again.This friction moment direction is oppositely opposite with the fast rear axle shaft rotation of changeing, and is identical with the rear axle shaft hand of rotation of slow-speed.The place will realize safe, reliable and stable self-locking skidproof greater than the fast wheel torque that changes with the torque of slow-speed wheel.Be not difficult to find out: the friction moment direction of taking turns a side fast is opposite with the hand of rotation of fast runner, estimates its value for negative; And the friction moment direction of low-rotate speed one side is identical with the hand of rotation of low-rotate speed, estimates its value for just.This situation makes the drive torque of the drive torque of slow-speed wheel greater than fast runner just as the part drive torque is transferred to the slow-speed wheel by quick wheel.So also just improved the skid resistance of automobile.
Claims (2)
1, the rear-end gear reduction assembly that is used for MPV or SUV car, it comprise bevel housing and with housing bonded assembly axle drive shaft, be provided with diff in the bevel housing, axle drive shaft and differential gear engagement, it is characterized in that described diff adopts anti-skid final drive, be arranged with elastomeric compressible spacer on the axle drive shaft, the two ends of compressible spacer cooperate with axle drive shaft backup bearing in the bevel housing respectively.
2, the rear-end gear reduction assembly that is used for MPV or SUV car according to claim 1, it is characterized in that being provided with a pair of preloading spring between two axle side gears in the anti-skid final drive, the two ends of preloading spring are respectively equipped with a spring stop that matches, each spring stop forms with the left and right half gear respectively and cooperates, on the left and right half gear, be respectively equipped with one group of active friction plate of alternately arranging and from movable friction plate, link to each other with axle side gear from movable friction plate, active friction plate links to each other with the anti-skid final drive housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620161323 CN200981502Y (en) | 2006-12-03 | 2006-12-03 | Rear axle main reducing gear assembly for MPV/SUV vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620161323 CN200981502Y (en) | 2006-12-03 | 2006-12-03 | Rear axle main reducing gear assembly for MPV/SUV vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200981502Y true CN200981502Y (en) | 2007-11-28 |
Family
ID=38908664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620161323 Expired - Lifetime CN200981502Y (en) | 2006-12-03 | 2006-12-03 | Rear axle main reducing gear assembly for MPV/SUV vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200981502Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767578A (en) * | 2009-09-23 | 2010-07-07 | 王增强 | Automotive rear axle speed-reducing brake |
| CN102985723A (en) * | 2010-07-09 | 2013-03-20 | 日产自动车株式会社 | Torque-distribution control device |
| CN103742531A (en) * | 2013-12-20 | 2014-04-23 | 柳州正菱集团有限公司 | Thrust bearing pretightening device |
| CN109595328A (en) * | 2019-01-30 | 2019-04-09 | 汽解放汽车有限公司 | It is a kind of for adjusting the waveform spacer of bearing pre-fastening |
| CN109780179A (en) * | 2019-01-08 | 2019-05-21 | 一汽解放汽车有限公司 | A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment |
| CN110748625A (en) * | 2019-10-29 | 2020-02-04 | 一汽解放汽车有限公司 | Limited slip differential structure |
-
2006
- 2006-12-03 CN CN 200620161323 patent/CN200981502Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101767578A (en) * | 2009-09-23 | 2010-07-07 | 王增强 | Automotive rear axle speed-reducing brake |
| CN101767578B (en) * | 2009-09-23 | 2014-02-19 | 王增强 | Automotive rear axle speed-reducing brake |
| CN102985723A (en) * | 2010-07-09 | 2013-03-20 | 日产自动车株式会社 | Torque-distribution control device |
| CN103742531A (en) * | 2013-12-20 | 2014-04-23 | 柳州正菱集团有限公司 | Thrust bearing pretightening device |
| CN109780179A (en) * | 2019-01-08 | 2019-05-21 | 一汽解放汽车有限公司 | A kind of commercial vehicle main cone bearing pre-tightening structure and its Method of Adjustment |
| CN109595328A (en) * | 2019-01-30 | 2019-04-09 | 汽解放汽车有限公司 | It is a kind of for adjusting the waveform spacer of bearing pre-fastening |
| CN110748625A (en) * | 2019-10-29 | 2020-02-04 | 一汽解放汽车有限公司 | Limited slip differential structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hefei AAM Automotive Driveline & Chassis System Co.,Ltd. Assignor: HeFei Automobile Axle Co., Ltd Contract record no.: 2010340000137 Denomination of utility model: Rear axle main reducer assembly for MPV/SUV vehicle Granted publication date: 20071128 License type: Exclusive License Record date: 20100730 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071128 |
|
| EXPY | Termination of patent right or utility model |