CN201475278U - Non-circular bevel gear limited slip differential - Google Patents
Non-circular bevel gear limited slip differential Download PDFInfo
- Publication number
- CN201475278U CN201475278U CN2009202029969U CN200920202996U CN201475278U CN 201475278 U CN201475278 U CN 201475278U CN 2009202029969 U CN2009202029969 U CN 2009202029969U CN 200920202996 U CN200920202996 U CN 200920202996U CN 201475278 U CN201475278 U CN 201475278U
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- Prior art keywords
- differential
- gears
- bevel gear
- planetary gears
- circular bevel
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- Expired - Lifetime
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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)
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Abstract
A non-circular bevel gear limited slip differential is mainly formed by assembling a casing, four planetary gears, a cross axle and two half axle gears. The planetary gears and the half axle gears all adopt non-circular bevel gear structures, and the transmission ratio between the planetary gears and the half axle gears ensures that the full circle region of the planetary gears is set to be '1 or 3' periods of change according to intersection angles of the planetary gears; because the planetary gears and the half axle gears adopt non-circular bevel gear structures, the value of transmission ratio is unfixed during a meshing process, thereby ensuring that output torques of the two half axles are not distributed on average but change according to the transmission ratio law, equaling to that the locking ratio of a differential is increased, and improving the off-road trafficability of a vehicle. The utility model is applicable to various wheel type construction machineries such as off-road vehicles, auto-dumpers, wheel loaders, soil shifters, and the like.
Description
Technical field
The utility model belongs to mechanical engineering field, is specifically related to a kind of vehicle slip-limiting differential mechanism with noncircular bevel gear.
Background technique
Offroad vehicle will travel through the mire of being everlasting, soft surface even cross-country locality, and passing ability is one of its most important performance index.Differential mechanism is as the vitals of automobile, and its effect is a distribution of torque between two output shafts, and guarantees that two output shafts might rotate with different angular velocity, and its form and performance are directly connected to the passing ability of car load.
At present, China's offroad vehicle ransaxle also generally adopts symmetrical cone gear differential mechanism, and its two-semiaxle gear size is identical, can be with the torque left and right driving wheel of distributing on a rough average.When automobile travels on good road, such distribution for straight-line travelling still be turning driving all be satisfied.But when single wheel is in the very little smooth ground of coefficient of attachment,, also can't bring into play potential tractive force, cause automobile to travel although there is good adhering on opposite side wheel and ground.
The approach that addresses the above problem is to adopt the anti-slip differential device, increases locking coefficient.Common method mainly contains:
Adopt differential lock: when a wheel is in the less road surface of adhesion, can handle differential lock differential carrier and semiaxis are locked together, make differential mechanism not play differential action, this moment, locking coefficient was ∞, can make full use of left and right adhesion of taking turns like this, make tractive force reach possible maximum value.Before sailing the highway section that is difficult to walk in the automobile running into, can handle differential lock differential mechanism is pinned, cross the highway section that is difficult to walk after, should in time differential lock be unclamped, with the adverse consequences of avoiding occurring bringing because of the indifferential effect.
The friction type differential mechanism: its principle is to utilize the internal friction of mechanical component in the differential mechanism to increase locking coefficient.This differential design complexity, the requirement on machining accuracy height, easy to wear.Because need the ransaxle body structure is done bigger change, so generally can't install on the vehicle of having finalized the design, its Applicable scope is restricted.
The free wheel type differential mechanism: the free wheel type differential mechanism carries out work according to the speed discrepancy of left and right wheels, makes left and right sides semiaxis moment of torsion not have influence mutually.When single wheel skidded, it can automatically separate the semiaxis that changes driving wheel soon with differential mechanism, allow fast runner freely rotate, and all torsion torque is all passed to the slow-speed driving wheel.Shortcoming is a complex structure, and wearing and tearing and impulse ratio are more serious.
The gear ratio differential mechanism: differential bevel wheel is secondary if adopt variable ratio, then can rely on the barrier effect of variable ratio transmission to increase its locking coefficient under the prerequisite that does not change the ransaxle general structure, improves the cross-country passing ability of vehicle.But there are two big weakness in the gear ratio differential mechanism at present: the one, and the excursion of velocity ratio is too little, is not enough to overcome the influence of skidding; The 2nd, the period of change of velocity ratio is too short, easily produces pulsation and impacts.Its reason is that the velocity ratio of existing gear ratio differential mechanism is is a period of change with gear circular pitch, and its cycle is too short, and amplitude of variation is too little.
Summary of the invention
The purpose of this utility model provides a kind of higher locking coefficient that has, and can improve the New Type Anti-skid Differential of the cross-country passing capacity of vehicle.
The technological scheme that adopts is:
Slip-limiting differential mechanism with noncircular bevel gear mainly is to be assembled into by housing, four planetary pinions, cross axle and two differential gears.Its technical characterstic is:
Described planetary pinion and differential gear are non-cone gear structures, velocity ratio is by planetary corner between planetary pinion and the differential gear, " 1 or 3 " individual period of change is arranged in the whole circle of planetary pinion interval, because described planetary pinion and differential gear adopt non-cone gear structure, velocity ratio no longer is a definite value in the engagement process, thereby make no longer mean allocation of two-semiaxle output torque, but according to the proportional variation of velocity ratio rule, be equivalent to increase the locking coefficient of differential mechanism, improved the cross-country passing capacity of vehicle.
The utility model is specially adapted to various industrial wheeled equipments such as offroad vehicle and dump truck, wheel loader, bulldozer.
Description of drawings
Fig. 1 is a kind of embodiment's of model utility a STRUCTURE DECOMPOSITION schematic representation.
Fig. 2 is planetary pinion and differential gear transmission schematic representation.
Embodiment
Slip-limiting differential mechanism with noncircular bevel gear comprises two differential gears 3 and cross axle 4 that differential casing 1, four planetary pinions 2, structure that structure is identical are identical.Housing 1 is made up of the first half housings 5 and the second half housings 6, after four planetary pinions 2 are contained on four axles of cross axle 4 respectively, pack in the differential casing 1, in the differential gear die cavity of the first half housings 5 of differential casing 1 and the second half housings 6, be respectively charged into a differential gear 3, the first half housings 5 and the second half housings 6 connect into an overall structure by bolt.The internal spline of two differential gears 3 can be connected with the left and right axle key of automobile drive axle respectively.
Four planetary pinions 2 and two differential gears 3 adopt non-cone gear structures, and planetary pinion 2 is irrelevant with the number of teeth with the velocity ratio rule between two differential gears 3, but by planetary corner, planetary pinion is put in order enclosed the interval and be arranged to 1 or 3 period of change.Thereby broken through of the restriction of " gear ratio differential mechanism " speed ratio period of change, improved its speed ratio excursion greatly, thereby improved the locking coefficient of differential mechanism, reduced pulsation simultaneously and impact, reached the cross-country requirement of automobile for gear single-revolution joint.
Claims (1)
1. slip-limiting differential mechanism with noncircular bevel gear, mainly be to be assembled into by differential casing (1), four planetary pinions (2), two differential gears (3) and cross axle (4), it is characterized in that: described planetary pinion (2) and differential gear (3) adopt non-cone gear structure; The velocity ratio rule between planetary pinion (2) and the differential gear (3) and the number of teeth are irrelevant, but press the corner of planetary pinion (2), and one or three period of change is arranged in the whole circle of planetary pinion (2) interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202029969U CN201475278U (en) | 2009-09-02 | 2009-09-02 | Non-circular bevel gear limited slip differential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202029969U CN201475278U (en) | 2009-09-02 | 2009-09-02 | Non-circular bevel gear limited slip differential |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475278U true CN201475278U (en) | 2010-05-19 |
Family
ID=42411525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202029969U Expired - Lifetime CN201475278U (en) | 2009-09-02 | 2009-09-02 | Non-circular bevel gear limited slip differential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475278U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886695A (en) * | 2010-08-10 | 2010-11-17 | 中国人民解放军军事交通学院 | Slip-limiting differential mechanism with noncircular bevel gear |
| CN104179926A (en) * | 2014-09-04 | 2014-12-03 | 中国人民解放军军事交通学院 | Non-bevel gear mechanism |
-
2009
- 2009-09-02 CN CN2009202029969U patent/CN201475278U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886695A (en) * | 2010-08-10 | 2010-11-17 | 中国人民解放军军事交通学院 | Slip-limiting differential mechanism with noncircular bevel gear |
| CN104179926A (en) * | 2014-09-04 | 2014-12-03 | 中国人民解放军军事交通学院 | Non-bevel gear mechanism |
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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: Shenyang Automobile Axle Manufacturing Co., Ltd. of CSR Corporation Limited Assignor: Li Ruide Contract record no.: 2012210000007 Denomination of utility model: Slip-limiting differential mechanism with noncircular bevel gear Granted publication date: 20100519 License type: Common License Record date: 20120214 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |