CN2553193Y - Variable transmission ration slide-limiting differential mechanism assembly - Google Patents
Variable transmission ration slide-limiting differential mechanism assembly Download PDFInfo
- Publication number
- CN2553193Y CN2553193Y CN01251315U CN01251315U CN2553193Y CN 2553193 Y CN2553193 Y CN 2553193Y CN 01251315 U CN01251315 U CN 01251315U CN 01251315 U CN01251315 U CN 01251315U CN 2553193 Y CN2553193 Y CN 2553193Y
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- Prior art keywords
- differential
- casing
- utility
- model
- differential mechanism
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- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 title claims description 16
- 230000005540 biological transmission Effects 0.000 title claims description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005036 potential barrier Methods 0.000 description 5
- 239000011295 pitch Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The utility model relates to a variable drive ratio limited-slip differential assembly, which comprises a casing, and a centerpiece. The utility model is characterized in that the casing comprises a half casing A and a half casing B, and a cross hole is arranged in the middle of the casing; planet gears are respectively arranged on the four shafts of the centerpiece and then into the casing, and an axle shaft gear, a disk spring and a friction disk are respectively arranged into each die cavity of the half casings A and B; internal splines of the two axle shaft gears are respectively connected with left and right axle shaft keys of a drive axle; the half casing A and the half casing B are connected into a whole through a bolt. The differential casing has a split-type structure which facilitates the assembly and the maintenance, and the locking coefficient can achieve above2.67. The utility model has the advantages that obtaining good application effects on military cross country vehicles with different specifications and grades, having wide application prospect on civil vehicles.
Description
(1) technical field
The utility model relates to a kind of limited-slip differential assembly, particularly relates to the differential mechanism with variable transmission ratio and eliminating slip assembly on a kind of transmission systems such as ransaxle that are fit to be installed in light, medium off road vehicle and various transportation, loading vehicles.
(2) technical background
Though the structural type of limited-slip differential is more, it is several that its working principle can reduce the electronic limited slip differential device system that interior friction type, override type, potential barrier formula and ABS brake system combine.Wherein interior friction type is the locking coefficient that interior friction when increasing differential rotate improves differential mechanism, and its practical structure roughly has three kinds.Control slip differential limited is by installing the resisting moment that friction plate improves differential rotation additional between the back side of half shaft wheel and differential casing, this type of can be divided into again spring preload and two kinds of forms of no spring preload.The differential resisting moment that the spring reloaded is wherein arranged is a constant substantially, and is little with the output torque of bridge relation, so when vehicle turned under underloading, what outboard wheels produced was to bear tractive force, has not only reduced the power of vehicle, has also increased Tyte Wear.Non-reloaded need can reach required locking coefficient at half shaft wheel back stack multi-disc friction sheet.Because its stable working is widely used on technology maturation, limousine abroad, go-anywhere vehicle and the engineering machinery.But, complex structure, not compact, price is higher.The worm-gear type differential mechanism utilizes the friction between the flank of tooth to realize skidproof effect, and locking coefficient generally more than 6, is mainly used in heavy-duty tipper, and its complex structure is made difficulty, the cost height, thereby limited application.The top circle that the planetary differential mechanism of a kind of cylindrical gears of Tractech company exploitation utilizes planet wheel is as the supporting of sliding bearing and increasing interior friction, but structure is not compact, poor reliability.Application is restricted.And override type is that the moment of torsion of ransaxle is all transferred on the slow-speed wheel, allows change trains or buses soon to take turns freely rotate, and the main structure form has two kinds of cammingly and free wheel types.Cammingly is more easy to wear, free wheel type can produce very big impact when engaging again after separation, load is easy to damage when big, the work utmost point is not steady, only be used for the electronic limited slip differential system that the minority vehicle combines with the ABS brake system, the sliding anti-lock braking system of its limit is passed through the biography speed of sensor monitoring both sides semiaxis and the corner of steering wheel, and calculates the rotating speed ratio of both sides wheel according to the corner of steering wheel.If the ratio of the rotating speed of both sides wheel and the difference of calculated value surpass given margin of error, just carry out the braking of appropriateness with the higher relatively wheel of rotating speed by the abs braking system, the ratio of the rotating speed of two-wheeled is remained near the theoretical value.This antiskid system stable working, accurately, have no effect to turning to, but because its working principle is by braking quick wheel, the moment of torsion differential action that waits by differential mechanism increases the moment of torsion of slow-speed wheel, and do not resemble the limited-slip differential of other types, by being moved on to, the torque axis on the fast runner prevents on the slow-speed wheel that fast runner from skidding, so will obtain same tractive force, the engine power of consumption increases many.And the electronics complexity, difficult in maintenance under abominable geographical environment or condition of battlefield, the damage of any one sensor or any cable all will cause system's total failure, so its reliability and survival rate are lower.
Potential barrier formula: utilize between the half shaft wheel of both sides periodic velocity ratio to fluctuate and cause a potential barrier to differential motion, have only when the difference in torque of both sides half shaft wheel during greater than the potential barrier of velocity ratio and friction torque sum, differential gear can be crossed the continuous differential movement of potential barrier, otherwise can only swing in a circular pitch.This differential design is simple, and part number and common bevel differential are basic identical, and just wherein the number of teeth of planet wheel and half shaft wheel is less, and profile of tooth is special.This differential mechanism also has working stability, reliable performance, reduces the advantage of tire wear, uses on many abroad vehicles, but because its locking coefficient is lower, thereby limited its application area.
(3) summary of the invention
The technical problems to be solved in the utility model is the shortcoming and defect that overcomes above-mentioned all kinds of limited-slip differentials, and a kind of variable ratio differential mechanism is provided.
The technological scheme that solves is:
The variable ratio differential mechanism comprises differential casing, 2 differential gears, 4 planetary pinions, cross planet pin.Differential casing is middle minute double-body bike, and middle cross bore is loaded onto planetary pinion respectively on the cross planet pin.In the left and right die cavity of differential casing, be respectively charged into a differential gear and butterfly spring, friction plate.A left side half housing of differential casing is connected in aggregates with right half housing by bolt.Left and right half gear internal spline is connected with the left and right half key of ransaxle.
During assembling, pack in the ransaxle when differential assembly installs main drive gear, its differential gear internal spline just can carry out work and bring into play its function with after the ransaxle left and right half is connected.
Advantage of the present utility model is:
1, the utility model has adopted the planetary pinion and the differential gear number of teeth, and utilize the planetary pinion and the differential gear number of teeth that the characteristics of common divisor 3 are arranged, to count and be decided to be 3 circular pitches than the cycle, thereby reduced the relative angle acceleration between planetary pinion and the differential gear significantly, speed ratio between the two-semiaxle gear reaches 1: 1.85 the phenomenon that the flank of tooth comes to a point does not still take place, after the friction, locking coefficient should be able to reach more than 2.67 in counting.Increased substantially the locking coefficient of differential mechanism.
2, another characteristics of the present utility model are to install a slice belleville spring additional in each differential gear back, thereby the cross-country power of vehicle vehicle when the unsettled or one-sided driving wheel of one-sided driving wheel is on ice and snow road is strengthened significantly.Although it is the profile of tooth of brand-new design can make slow-speed wheel moment of torsion reach the several times of fast runner, unsettled or when being positioned on the ice and snow road, its frictional resistance moment is zero or almost nil when fast runner.Even amplified several times by the variable ratio differential mechanism, the moment of torsion that is assigned on the slow-speed wheel still is not enough to powered vehicle, opens the throttle to make the fast runner that skids fly to change.After differential gear that the increase belleville spring produces and the friction torque between the differential carrier and the friction torque between the flank of tooth were amplified several times by the variable ratio differential gear, still can keep on the slow-speed wheel had certain driving moment, can promote vehicle and advance.When ransaxle carries increase, the axial force on the differential gear will overcome belleville spring thrust, and belleville spring is flattened, and keep necessary flank of tooth sideshake, prevent flank of tooth premature wear.Adopt after the belleville spring, the locking coefficient of differential mechanism no longer is a constant, and when single wheel was unsettled, theoretical locking coefficient was infinity when the output torque of slow-speed wheel is no more than minimum setting value.Along with the increasing of fast runner load, locking coefficient can descend to some extent, and the estimated average value is more than 3.0.Such performance is all very favourable for trafficability and minimizing tire wear.Because when fast runner load is heavier, illustrate that the skidding of fast runner is also not serious, or be in turn condition, do not need this moment whole torque axis is moved on on the slow-speed wheel.
3, differential casing is that the branch body structure is convenient to assembling and is used maintenance.
4, the differential mechanism with variable transmission ratio and eliminating slip assembly has passed through the stand test of the military go-anywhere vehicle ransaxle of 2020VJ, and its test result has reached the ideal effect of average locking coefficient 3.08-3.77.The utility model not only can be obtained good using effect on different size, the military off-road vehicle of grade, and also will have a wide range of applications aspect civilian vehicle.
(4) description of drawings
Fig. 1 is an a kind of embodiment's of the present utility model structural representation.
(5) embodiment
The sliding device assembly of variable ratio limit comprises 1,4 planetary pinions of differential casing 2,2 differential gears 4, planet pin 3 and dish springs 5.Planetary pinion 2 and differential gear 4 are non-circular three circular pitch variable ratio gears, and planet pin 3 is a cross axle, and differential casing 1 is made up of half housing A and half housing B, and there is cross bore the centre.After 4 planetary pinions 2 are contained on 4 axles of cross axle 3 respectively, pack in the differential casing 1, be respectively charged into a differential gear 4, dish spring 5 and friction plate 7 in each die cavity of two and half housing A, the B of differential casing 1, with 8 bolts 6 half housing A and half housing B be connected to an integral body then.After this differential assembly installed main drive gear, and the ransaxle of packing into is interior, its differential gear 4 internal splines just can be connected with ransaxle left and right half key, can carry out work and bring into play its function.
Claims (2)
1, differential mechanism with variable transmission ratio and eliminating slip assembly comprises differential casing (1), and cross axle (3) is characterized in that described differential casing (1) is made up of half housing (A) and half housing (B), and cross bore is arranged in the middle of the differential casing (1); Pack into after on 4 axles of described cross axle (3), loading onto planetary pinion (2) respectively in the differential casing (1), in each die cavity of two and half housings (A) of differential casing (1), (B), be respectively charged into a differential gear (4), dish spring (5) and friction plate (7); The internal spline of 2 differential gears (4) is connected with the left and right half key of ransaxle respectively; Half housing (A) is connected in aggregates with half housing (B) by bolt.
2, differential mechanism with variable transmission ratio and eliminating slip assembly according to claim 1 is characterized in that described planetary pinion (2), differential gear (4) are non-circular three circular pitch variable ratio gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01251315U CN2553193Y (en) | 2001-11-08 | 2001-11-08 | Variable transmission ration slide-limiting differential mechanism assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01251315U CN2553193Y (en) | 2001-11-08 | 2001-11-08 | Variable transmission ration slide-limiting differential mechanism assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2553193Y true CN2553193Y (en) | 2003-05-28 |
Family
ID=33661287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01251315U Expired - Lifetime CN2553193Y (en) | 2001-11-08 | 2001-11-08 | Variable transmission ration slide-limiting differential mechanism assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2553193Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324251C (en) * | 2003-08-18 | 2007-07-04 | 中国人民解放军军事交通学院 | Anti-skid differential with adaptive speed ratio |
| CN103629324A (en) * | 2013-11-29 | 2014-03-12 | 陈创 | Noise-free-type limited slip differential |
-
2001
- 2001-11-08 CN CN01251315U patent/CN2553193Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324251C (en) * | 2003-08-18 | 2007-07-04 | 中国人民解放军军事交通学院 | Anti-skid differential with adaptive speed ratio |
| CN103629324A (en) * | 2013-11-29 | 2014-03-12 | 陈创 | Noise-free-type limited slip differential |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: LI RUIDE Free format text: FORMER OWNER: HUADE CAR TRADE CO., LTD., SHENYANG CITY Effective date: 20070810 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070810 Address after: 110022 1-4-1, Shen Liaodong Road, Tiexi District, Liaoning, Shenyang, 39-2 Patentee after: Li Ruide Address before: 110141 No. 2 Songhua Lake Street, Shenyang economic and Technological Development Zone, Liaoning Patentee before: Shenyang Huade Automobile Trade Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111108 Granted publication date: 20030528 |