CN104728387B - The slip-limiting differential mechanism with noncircular bevel gear of trident shaft type - Google Patents
The slip-limiting differential mechanism with noncircular bevel gear of trident shaft type Download PDFInfo
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- CN104728387B CN104728387B CN201510138418.3A CN201510138418A CN104728387B CN 104728387 B CN104728387 B CN 104728387B CN 201510138418 A CN201510138418 A CN 201510138418A CN 104728387 B CN104728387 B CN 104728387B
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- axle shaft
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- shaft gear
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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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Abstract
The present invention proposes a kind of simple structure, low cost, the slip-limiting differential mechanism with noncircular bevel gear of intensity trident shaft type high, it has differential casing, left non-conical axle shaft gear, right non-conical axle shaft gear and 3 non-conical planetary gears, left non-conical axle shaft gear is arranged in the left shell half body of differential casing, right non-conical axle shaft gear is arranged in the right half-shell body of differential casing, 3 non-conical planetary gears are arranged in differential casing by trident shaft, trident shaft is formed as having 3 Y-shapeds of branched shaft, 3 branched shafts separate the distribution of identical even angle, 3 non-conical planetary gears are engaged with left non-conical axle shaft gear and right non-conical axle shaft gear, the planetary number of teeth of non-conical, the number of teeth of the number of teeth of left non-conical axle shaft gear and right non-conical axle shaft gear is identical.
Description
Technical field
The present invention relates to a kind of limited-slip differential, more particularly to a kind of slip-limiting differential mechanism with noncircular bevel gear of trident shaft type.
Background technology
Currently, automobile is increasingly becoming conventional walking-replacing tool, and self-driving travel increasingly becomes the travel mode of people's pursuit,
And the car common in the area such as mountain area is difficult to travel, therefore offroad vehicle turns into the first choice of some people.
Because offroad vehicle will often in muddy, soft surface even cross-country locality traveling be that its is most important by property
One of performance indications.Differential mechanism as automobile important component, its effect is to export between centers distribution of torque two, and is ensured two defeated
Shaft is possible to be rotated with different angular speed, its form and performance be directly connected to vehicle by property.
At present, China's offroad vehicle drive axle also generally uses symmetrical cone gear differential mechanism, its two halves shaft gear size
It is identical, left and right driving wheel can be distributed to by torque is on a rough average.When automobile is travelled on good road, no matter right such distribution is
Can meet in straight-line travelling or turning driving.But when single wheel is in the smooth ground of attachment coefficient very little, to the greatest extent
Pipe opposite side wheel has good attachment with ground, cannot also play potential tractive force, causes automobile to travel.
The approach for solving the above problems is, using anti-slip differential device, to increase locking coefficient.Common method mainly has as follows.
(1) differential lock, when wheel road surface less in adhesive force, can manipulate differential lock by differential carrier and half
Shaft locking together, makes differential mechanism not play differential action, and now locking coefficient is ∞, can so make full use of the attached of left and right wheel
Put forth effort, tractive force is reached possible maximum.Before the section that is difficult to walk is sailed into the running car, differential lock can be manipulated by differential mechanism
Pin, cross and be difficult to walk behind section, but, differential lock should be unclamped in time, it is bad because of indifferential zone of action to avoid the occurrence of
Consequence.
(2) friction type differential, its principle is to increase locking coefficient using the internal friction of mechanical organ in differential mechanism.
This differential design is complicated, and requirement on machining accuracy is high, easy to wear.Due to that need to do larger change to drive axle body structure, therefore one
As cannot be installed on the vehicle shaped, its scope of application is restricted.
(3) free wheel type differential mechanism, free wheel type differential mechanism is operated according to the speed discrepancy of left and right wheelses, makes left and right half
Axle moment of torsion is mutually without influence.When single wheel skids, it automatically can separate the semiaxis of fast-turn construction driving moment and differential mechanism, allow
Fast runner is freely rotated, and all torsion torque is all transmitted to slow-speed driving moment.Have the disadvantage complex structure, abrasion and impulse ratio are tighter
Weight.
(4) gear ratio differential mechanism, differential bevel wheel pair then can totally be tied according to variable ratio drive axle is not changed
On the premise of structure, the barrier effect being driven by variable ratio increases its locking coefficient, improves the cross-country by property of vehicle.Earliest
The pattern of appearance is that gearratio period of change is a circular pitch (Liu Weixin, automotive axle design [M], Beijing：Tsing-Hua University publishes
Society, 2004, Chinese patent ZL89100102.6, a kind of drive ratio-changing differential mechanism), i.e. gearratio change is total to by a pair
Yoke tooth form realizes that if gear has N number of tooth, gear turns around, and gearratio just changes N number of cycle, to keep transmission continuity,
Registration is required more than 1, number of gear teeth is impossible to very little, therefore, in transmission process, period of change is too many, and frequency is too high,
And it is too small to change amplitude.Occurred in that three circular pitch not rounded bevel differential (Chinese patents later：ZL01131791.4, becomes and passes
It is dynamic than limited-slip differential), i.e. gearratio realizes by three pairs of conjugate tooth profiles, number of gear teeth using 3 multiple, comparative maturity sets
It is calculated as 3：4, (9 teeth of planetary gear, 12 teeth of axle shaft gear), little gear turns around, and gearratio changes 3 cycles, differential mechanism
Theoretical locking coefficient can reach 1.857.But in these gear ratio differential mechanisms, the low intensity of gear, infringement uses the longevity
Life.
The content of the invention
The purpose of the present invention be directed to technological deficiency present in prior art and propose a kind of simple structure, low cost,
The slip-limiting differential mechanism with noncircular bevel gear of intensity trident shaft type high.
To realize that the purpose of the present invention is adopted the following technical scheme that.
The slip-limiting differential mechanism with noncircular bevel gear of the trident shaft type of technical scheme 1, with differential casing, left non-conical semiaxis
Gear, right non-conical axle shaft gear and 3 non-conical planetary gears, the left non-conical axle shaft gear are arranged on the differential mechanism
In the left shell half body of housing, the right non-conical axle shaft gear is arranged in the right half-shell body of the differential casing, described in 3
Non-conical planetary gear is arranged in the differential casing by trident shaft, and the trident shaft is formed as having 3 branched shafts
Y-shaped, 3 branched shafts separate the distribution of identical even angle, 3 non-conical planetary gears and the left not rounded
Cone axle shaft gear and the right non-conical axle shaft gear engagement, the planetary number of teeth of non-conical, the left non-conical half
The number of teeth of the number of teeth of shaft gear and the right non-conical axle shaft gear is identical.
The slip-limiting differential mechanism with noncircular bevel gear of the trident shaft type of technical scheme 2, in the not rounded of the trident shaft type of technical scheme 1
In bevel gear limited-slip differential, the left non-conical axle shaft gear and the right non-conical axle shaft gear and the non-conical planet
Gearratio rule between gear according toSetting, wherein：i34It is the left non-conical axle shaft gear
And the right non-conical axle shaft gear and the planetary gearratio of the non-conical, z3、z4Respectively described left non-conical semiaxis
Gear and the right non-conical axle shaft gear and the planetary number of teeth of the non-conical,It is the non-conical planetary gear
Corner, c is constant, in the range from 0~0.5.
The slip-limiting differential mechanism with noncircular bevel gear of the trident shaft type of technical scheme 3, in the trident shaft type of technical scheme 1 or 2
In slip-limiting differential mechanism with noncircular bevel gear, the non-conical planetary gear, the left non-conical axle shaft gear and the right not rounded
Cone axle shaft gear has 9 teeth respectively.
Compared with prior art, the present invention has following beneficial effect.
The slip-limiting differential mechanism with noncircular bevel gear of the trident shaft type according to technical scheme 1, with left non-conical axle shaft gear, the right side
Non-conical axle shaft gear and 3 non-conical planetary gears, differential casing is arranged on by trident shaft by non-conical planetary gear
In, and engaged with axle shaft gear, in addition, by the planetary number of teeth of non-conical, the number of teeth of left non-conical axle shaft gear and the right side
The number of teeth of non-conical axle shaft gear is set to identical, by using not rounded bevel gear, and the number of teeth of pitch wheel is set
It is set to identical, can preferably increases the locking coefficient of differential mechanism, increase coupling mechanism force, improves the biography to the tractive force of offroad vehicle
Pass, more easily offroad vehicle is in muddy, soft surface even cross-country locality traveling.In addition, the number of teeth of gear is identical, therefore add
Work is convenient, low cost.And the compact conformation for so being formed, load is reasonably distributed, on the premise of larger locking coefficient is kept,
The structural strength of limited-slip differential can be significantly improved.
The slip-limiting differential mechanism with noncircular bevel gear of the trident shaft type according to technical scheme 2, transmission is set according to above-mentioned formula
Than that gearratio can be made to change three cycles, it is ensured that the continuity of transmission when gear rotation is turned around.
The slip-limiting differential mechanism with noncircular bevel gear of the trident shaft type according to technical scheme 3, by non-conical planetary gear, left not rounded
The number of teeth of cone axle shaft gear and right non-conical axle shaft gear is set to 9.Can ensure the feelings of distribution by setting 9 teeth
Under condition, make structure compacter, and can farthest improve the performance of limited-slip differential.By such special machine
Structure, the root caused because the number of teeth is few can be overcome to cut, topping, registration be less than the defect such as 1.
Brief description of the drawings
Fig. 1 is the decomposing schematic representation of the slip-limiting differential mechanism with noncircular bevel gear for representing trident shaft type of the invention.
Cuing open when Fig. 2 is the not rounded bevel gear engagement of the slip-limiting differential mechanism with noncircular bevel gear for representing trident shaft type of the invention
Depending on schematic diagram.
Specific embodiment
Embodiments of the present invention are described in detail with reference to the accompanying drawings.
Fig. 1 is the decomposing schematic representation of the slip-limiting differential mechanism with noncircular bevel gear for representing trident shaft type of the invention.Fig. 2 is to represent
Schematic cross-sectional view when the not rounded bevel gear of the slip-limiting differential mechanism with noncircular bevel gear of trident shaft type of the invention engages.
As shown in Figure 1 and Figure 2, the slip-limiting differential mechanism with noncircular bevel gear of trident shaft type of the invention have differential casing 10,
Left non-conical axle shaft gear 20, right non-conical axle shaft gear 30 and 3 non-conical planetary gears 40.
Left non-conical axle shaft gear 20 is arranged in the left shell half body 11 of differential casing 10, right non-conical axle shaft gear 30
In the right half-shell body 12 of differential casing 10.3 non-conical planetary gears 40 are arranged on differential mechanism by trident shaft 50
In housing 10, trident shaft 50 is formed as having 3 Y-shapeds of branched shaft 51, and 3 branched shafts 51 separate identical even angle point
Cloth.
3 non-conical planetary gears 40 are engaged with left non-conical axle shaft gear 20 and right non-conical axle shaft gear 30, not rounded
The number of teeth for boring the number of teeth, the number of teeth of left non-conical axle shaft gear 20 and right non-conical axle shaft gear 30 of planetary gear 40 is identical.
According to the slip-limiting differential mechanism with noncircular bevel gear of above-mentioned trident shaft type, with left non-conical axle shaft gear, right not rounded
, be arranged on non-conical planetary gear in differential casing by trident shaft by cone axle shaft gear and 3 non-conical planetary gears, and
Engaged with axle shaft gear, in addition, by the planetary number of teeth of non-conical, the number of teeth and right non-conical of left non-conical axle shaft gear
The number of teeth of axle shaft gear is set to identical, by using not rounded bevel gear, and the number of teeth of pitch wheel is set into phase
Together, can preferably increase the locking coefficient of differential mechanism, increase coupling mechanism force, improve the transmission to the tractive force of offroad vehicle, more
It is easy to offroad vehicle in muddy, soft surface even cross-country locality traveling.In addition, the number of teeth of gear is identical, thus it is easy to process,
Low cost.And the compact conformation for so being formed, load is reasonably distributed, on the premise of larger locking coefficient is kept, can be significantly
Improve the structural strength of limited-slip differential.
In addition, the gearratio rule between left non-conical axle shaft gear and right non-conical axle shaft gear and non-conical planetary gear
Rule can be according toSetting, wherein：i34It is left non-conical axle shaft gear and right non-conical axle shaft gear
With the planetary gearratio of non-conical, z3、z4Respectively left non-conical axle shaft gear and right non-conical axle shaft gear and non-conical
The planetary number of teeth,It is the planetary corner of non-conical, c is constant, in the range from 0~0.5.
According to the slip-limiting differential mechanism with noncircular bevel gear of above-mentioned trident shaft type, gearratio, energy are set according to above-mentioned formula
Enough when gear rotation is turned around, gearratio is set to change three cycles, it is ensured that the continuity of transmission.
In addition, non-conical planetary gear, left non-conical axle shaft gear and right non-conical axle shaft gear can respectively have 9
Individual tooth.By setting 9 teeth, structure can be made compacter, and can farthest carry in the case where distribution is ensured
The performance of limited-slip differential high.By such special mechanism, the root caused because the number of teeth is few can be overcome to cut, tooth top become
Point, registration are less than the defect such as 1.Certainly, non-conical planetary gear, left non-conical axle shaft gear and right non-conical axle shaft gear
The number of teeth can not be 9, but other quantity, such as 6,12,15 etc..
In addition, above-mentioned each embodiment is only a kind of implementation method, above-mentioned each embodiment can be combined to form each
Planting to be connected, and the combination is also contained in protection scope of the present invention.
The slip-limiting differential mechanism with noncircular bevel gear to the trident shaft type of the preferred embodiment of the present invention is illustrated above,
But, the present invention is not limited to above-mentioned specific embodiment, without departing from the scope of claim, can carry out various each
The deformation or change of sample.Present invention resides in the various modifications in the range of claim and change.
Claims (3)
1. a kind of slip-limiting differential mechanism with noncircular bevel gear of trident shaft type, it is characterised in that
With differential casing, left non-conical axle shaft gear, right non-conical axle shaft gear and 3 non-conical planetary gears,
The left non-conical axle shaft gear is arranged in the left shell half body of the differential casing, the right non-conical axle shaft gear
In the right half-shell body of the differential casing,
3 non-conical planetary gears are arranged in the differential casing by trident shaft, and the trident shaft is formed as tool
There are 3 Y-shapeds of branched shaft, 3 branched shafts separate the distribution of identical even angle,
3 non-conical planetary gears are engaged with the left non-conical axle shaft gear and the right non-conical axle shaft gear, institute
State the tooth of the planetary number of teeth of non-conical, the number of teeth of the left non-conical axle shaft gear and the right non-conical axle shaft gear
Number is identical.
2. the slip-limiting differential mechanism with noncircular bevel gear of trident shaft type according to claim 1, it is characterised in that the left not rounded
Cone axle shaft gear and the gearratio rule between the right non-conical axle shaft gear and the non-conical planetary gear according toSetting, wherein：i34For the left non-conical axle shaft gear and the right non-conical axle shaft gear with
The planetary gearratio of non-conical, z3、z4Respectively described left non-conical axle shaft gear and the right non-conical half axle gear
Wheel and the planetary number of teeth of the non-conical,It is the planetary corner of the non-conical, c is constant, in the range from 0
~0.5.
3. the slip-limiting differential mechanism with noncircular bevel gear of trident shaft type according to claim 1 and 2, it is characterised in that described non-
Cone planetary gear, the left non-conical axle shaft gear and the right non-conical axle shaft gear have 9 teeth respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510138418.3A CN104728387B (en) | 2015-03-27 | 2015-03-27 | The slip-limiting differential mechanism with noncircular bevel gear of trident shaft type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510138418.3A CN104728387B (en) | 2015-03-27 | 2015-03-27 | The slip-limiting differential mechanism with noncircular bevel gear of trident shaft type |
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| Publication Number | Publication Date |
|---|---|
| CN104728387A CN104728387A (en) | 2015-06-24 |
| CN104728387B true CN104728387B (en) | 2017-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510138418.3A Active CN104728387B (en) | 2015-03-27 | 2015-03-27 | The slip-limiting differential mechanism with noncircular bevel gear of trident shaft type |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102630410B1 (en) * | 2023-06-09 | 2024-01-29 | 송길봉 | A gear device in which a gear shaft and gear tube are combined into an integral structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0658705A1 (en) * | 1993-12-15 | 1995-06-21 | Henry Dangel | Speed-reducing mechanism and transmission device with two ranges for a motor vehicle |
| CN1418784A (en) * | 2001-11-14 | 2003-05-21 | 王小椿 | Differential mechanism with variable transmission ratio and eliminating slip |
| CN1487222A (en) * | 2003-08-18 | 2004-04-07 | 中国人民解放军军事交通学院 | Anti-skid differential with adaptive speed ratio |
| 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 |
-
2015
- 2015-03-27 CN CN201510138418.3A patent/CN104728387B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0658705A1 (en) * | 1993-12-15 | 1995-06-21 | Henry Dangel | Speed-reducing mechanism and transmission device with two ranges for a motor vehicle |
| CN1418784A (en) * | 2001-11-14 | 2003-05-21 | 王小椿 | Differential mechanism with variable transmission ratio and eliminating slip |
| CN1487222A (en) * | 2003-08-18 | 2004-04-07 | 中国人民解放军军事交通学院 | Anti-skid differential with adaptive speed ratio |
| 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 |
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| CN104728387A (en) | 2015-06-24 |
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Address after: 300161 No.1, dongjuzi, Chenglin Road, Hedong District, Tianjin Patentee after: ARMY MILITARY TRANSPORTATION University Address before: No.1, dongjuzi, Hedong District, Tianjin, 300361 Patentee before: Military Transportation University of PLA |
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