CN206682248U - A kind of electric differential mechanism with torque fixed direction allocation function - Google Patents
A kind of electric differential mechanism with torque fixed direction allocation function Download PDFInfo
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- CN206682248U CN206682248U CN201720424900.8U CN201720424900U CN206682248U CN 206682248 U CN206682248 U CN 206682248U CN 201720424900 U CN201720424900 U CN 201720424900U CN 206682248 U CN206682248 U CN 206682248U
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Abstract
The utility model discloses a kind of electric differential mechanism with torque fixed direction allocation function, including：Main driving mechanism；Bevel differential；TV controls drive mechanism, for output control power；First single epicyclic train, the first sun gear are fixedly and coaxially connected with the first semiaxis, and the first planet carrier is connected with control output end；Second single epicyclic train, the second planet carrier are scheduled on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear is by bearings on the first semiaxis；3rd single epicyclic train, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the 3rd gear ring with the second sun gear and is fixedly connected with the first semiaxis；Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.The utility model allows the driving torque of automobile to be assigned to left and right sides wheel according to what the demand for control of control logic oriented.
Description
Technical field
The utility model belongs to technical field of electric vehicle transmission, more particularly to a kind of with torque fixed direction allocation function
Electric differential mechanism.
Background technology
Increasingly attention due to energy crisis and to environmental protection, new-energy automobile are that the development of future automobile is reverse, its
Middle electric automobile even more worldwide obtains fast development.Compared to traditional combustion engine automobile, electric automobile has more preferable
Economy and the feature of environmental protection, cause electric automobile that there is significant advantage in terms of environmental protection near the characteristics of zero-emission.Together
When, electric automobile because the features such as response of motor is fast, low-speed big, has a more preferable acceleration, motor speed,
Torque is easily obtained, and electric automobile more accurately can be controlled.Therefore, electric automobile has great development potentiality.
The power assembly or be made up of motor, speed changer and drive axle that electric automobile is typically formed using motor and drive axle
Power assembly drive vehicle to travel, the electric automobile of In-wheel motor driving is because unsprung mass is big, wheel hub motor weak heat-dissipating
The shortcomings of not scale of mass production, therefore mostly contain drive axle in the power assembly of existing electric automobile.
Differential mechanism is the important component in drive axle, due to differential mechanism " the not poor torsion of differential " principle, the driving torque of automobile
Can only equal distribution in left and right wheelses both sides, just can not be attached using ground well so in the case where road surface attachment is unequal
Put forth effort, or even the unstable period such as trackslip of wheel is easily caused in low attachment side, the adhesive ability of driving wheel can not be played.Together
When, the situation that load is transferred to outboard wheels by inboard wheel can occur when being turned due to vehicle high-speed, adhere to even in ground
In the case of good, the adhesive ability that will also result in outboard wheels is higher than inboard wheel, and now conventional carrier etc. divides moment of torsion extremely
Interior outboard wheels be then likely to result in inboard wheel reach limit of adhesion produce trackslip, make automobile unstability.If by inboard wheel
Partial torque is transferred to outboard wheels, then can increase the side force nargin of inboard wheel, prevents wheel slip, and can be right
Vehicle produces an additional yaw moment, and the torque can help to promote and guide turn inside diameter, improve turn inside diameter machine
Dynamic property and limit cornering ability.At present, the technology is to be applied to some high end motions in the form of torque fixed direction allocation differential mechanism
In type car and high-grade SUV, such as the super four-wheel drive system (SH-AWD) of Honda and the super active yaw control system of Mitsubishi
(SAYC) etc., but the technology but not excessive application on electric automobile.
The content of the invention
The purpose of this utility model is solution differential mechanism or so output torque equal the defects of can not adjusting, there is provided a kind of
Electric differential mechanism with torque fixed direction allocation function.
Technical scheme provided by the utility model is：
A kind of electric differential mechanism with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；
First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first tooth
Circle, first sun gear are fixedly and coaxially connected with the first semiaxis, first planet carrier and the output of TV control drive mechanisms
End connection；
Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second tooth
Circle, second planet carrier are fixed on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear is rotatable
Be supported on the first semiaxis；
3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd tooth
Circle, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the second sun gear, the 3rd tooth
Circle is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
Preferably, the TV controls drive mechanism includes TV controlled motors and TV reducing gears.
Preferably, the TV controlled motors have hollow output shaft, and first semiaxis is rotatably supported at described
Hollow output shaft, and passed from hollow output shaft.
Preferably, the TV reducing gears include：
4th single epicyclic train, it includes the 4th sun gear, fourth line star-wheel, fourth line carrier and the 4th tooth
Circle, the 4th sun gear are fixedly connected with hollow output shaft, and the 4th gear ring is fixed on driving axle housing；
5th single epicyclic train, it includes the 5th sun gear, fifth line star-wheel, fifth line carrier and the 5th tooth
Circle, the 5th sun gear are fixedly connected with fourth line carrier, and the 5th gear ring is fixed on driving axle housing, the fifth line
Carrier is connected as control output end with the first planet carrier.
Preferably, the main driving mechanism includes main drive motor and main gear reducer structure.
Preferably, the main drive motor has hollow output shaft, and the second semiaxis is rotatably supported at described hollow
Output shaft, and passed from hollow output shaft.
Preferably, the main gear reducer structure includes：
7th single epicyclic train, it includes the 7th sun gear, the 7th planetary gear, the 7th planet carrier and the 7th tooth
Circle, the 7th sun gear are fixedly connected with main drive motor output shaft, and the 7th gear ring is fixed on driving axle housing；
6th single epicyclic train, it includes the 6th sun gear, the 6th planetary gear, the 6th planet carrier and the 6th tooth
Circle, the 6th sun gear are fixedly connected with the 7th planet carrier, and the 6th gear ring is fixed on driving axle housing, the 6th row
Carrier is fixedly connected with differential carrier.
A kind of electric differential mechanism with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；
First single double pinions system, it include the first sun gear, the first two-stage planet wheel, the first planet carrier and
First gear ring, first sun gear are fixedly and coaxially connected with the first semiaxis, first planet carrier and TV control drive mechanisms
Output end connection；
Second single double pinions system, it include the second sun gear, the second row twin-stage star-wheel, the second planet carrier and
Second gear ring, second planet carrier are fixed on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear
It is rotatably supported on the first semiaxis；
3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd tooth
Circle, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the second sun gear, the 3rd tooth
Circle is fixedly connected with the first semiaxis；
Wherein, the second single double pinions system has identical feature ginseng with the first single double pinions system
Number.
A kind of electric differential mechanism with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；
First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first tooth
Circle, first sun gear are fixedly and coaxially connected with the first semiaxis, first planet carrier and the output of TV control drive mechanisms
End connection；
Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second tooth
Circle, second planet carrier are fixed on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear is rotatable
Be supported on the first semiaxis；
3rd single double pinions system, it include the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and
3rd gear ring, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the second sun gear, described
3rd gear ring is fixedly connected with the first semiaxis；
Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
A kind of electric differential mechanism with torque fixed direction allocation function, including：
Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can pass rotary power
It is delivered to differential casing, driving vehicle traveling；
TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；
First single double pinions system, it include the first sun gear, the first two-stage planet wheel, the first planet carrier and
First gear ring, first sun gear are fixedly and coaxially connected with the first semiaxis, first planet carrier and TV control drive mechanisms
Output end connection；
Second single double pinions system, it include the second sun gear, the second two-stage planet wheel, the second planet carrier and
Second gear ring, second planet carrier are fixed on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear
It is rotatably supported on the first semiaxis；
3rd single double pinions system, it include the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and
3rd gear ring, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the second sun gear, described
3rd gear ring is fixedly connected with the first semiaxis；
Wherein, the second single double pinions system has identical feature ginseng with the first single double pinions system
Number.
The beneficial effects of the utility model are embodied in the following aspects：
1st, the electric differential mechanism provided by the utility model with torque fixed direction allocation function, is solved in conventional ADS driving bridge
The drawbacks of differential mechanism " not poor torsion of differential " so that point that the driving torque of automobile can orient according to the demand for control of control logic
Left and right sides wheel is fitted on, left and right sides wheel torque unequal distribution is realized on the premise of the total driving torque in longitudinal direction is not changed
Function, improve the turning mobility and Driving of vehicle.
2nd, the electric differential mechanism provided by the utility model with torque fixed direction allocation function, TV controlled motors and main driving
Motor coaxle arranges that structure is compacter, reduces arrangement space.
3rd, the electric differential mechanism provided by the utility model with torque fixed direction allocation function, belongs to sprung mass, therefore
Unsprung mass will not be dramatically increased as wheel hub motor, ride comfort during running car is influenceed small.
Brief description of the drawings
Fig. 1 carries the structural representation of torque fixed direction allocation functional electric differential mechanism embodiment one to be described in the utility model
Figure.
Fig. 2 carries the structural representation of torque fixed direction allocation functional electric differential mechanism embodiment two to be described in the utility model
Figure.
Fig. 3 carries the structural representation of torque fixed direction allocation functional electric differential mechanism embodiment three to be described in the utility model
Figure.
Fig. 4 carries torque fixed direction allocation functional electric differential mechanism example IV structural representation to be described in the utility model
Figure.
Fig. 5 carries torque of the torque fixed direction allocation functional electric differential mechanism when automobile is kept straight on to be described in the utility model
Flow to schematic diagram.
Fig. 6 is the torque fixed direction allocation functional electric differential mechanism described in the utility model that carries in automobile normal turn
Torque flows to schematic diagram.
Fig. 7 is the torque fixed direction allocation functional electric differential mechanism described in the utility model that carries in automobile left-hand rotation and torque
Torque when fixed direction allocation device works flows to schematic diagram.
Fig. 8 is the torque fixed direction allocation functional electric differential mechanism described in the utility model that carries in automobile right-hand rotation and torque
Torque when fixed direction allocation device works flows to schematic diagram.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation
Book word can be implemented according to this.
Embodiment one
As shown in figure 1, the utility model provides a kind of electric differential mechanism with torque distribution function, mainly by torque
Fixed direction allocation device 2000, traditional bevel differential 1400, main drive motor reducing gear 1500 and the structure of main drive motor 1002
Into.
In the present embodiment, the torque fixed direction allocation device 2000 be located on the left of drive axle (also can and main drive motor
1002 reversing of position, it is arranged on the right side of drive axle), mainly by TV controlled motors 1001, TV reducing gears 1100, duplicate rows
Star row TV coupling mechanisms 1200 and single planetary row differential mechanism coupling mechanism 1300 are formed.
The TV controlled motors 1001 are a cartridge type inner rotor motors, connect the first semiaxis 1402 of left side wheel
Being passed from its hollow rotor shafts endoporus, cartridge type internal rotor is connected with the spline of sun gear 1014 of fourth planet train 1010,
The output torque of TV controlled motors 1001 is inputted to fourth planet train 1010.The TV controlled motors 1001 pass through bearing
It is supported on the first semiaxis 1402, its stator and its housing are fixed with driving axle housing.
The TV reducing gears 1100 mainly include fourth planet train 1010 and fifth line star wheel series 1020.Described 4th
The planetary gear 1012 of planetary gear train 1010 including 1014, three circumference uniform distributions of sun gear, planet carrier 1013 and it is fixed on driving
Ring gear 1011 on axle housing.Wherein sun gear 1014 is connected with the cartridge type internal rotor spline of TV controlled motors 1001, OK
Carrier 1013 and the sun gear 1024 of fifth line star wheel series 1020 are integrated.The fifth line star wheel series 1020 include sun gear
1024th, the planetary gear 1022 of three circumference uniform distributions, planet carrier 1023 and the ring gear 1021 being fixed on driving axle housing.Wherein
Sun gear 1024 by bearings on the first semiaxis 1402, the planet carrier of the planetary gear train 1030 of planet carrier 1023 and first
1033 are integrated.
Preferably TV reducing gears 1100 can be by the reductor of single planetary gear train, multiple rows of planetary gear train or other forms
Structure is formed, therefore the form for converting reducing gear 1100 is not regarded as to innovation of the present utility model.
The double planet wheel rows of mixing TV coupling mechanisms 1200 mainly include the first planetary gear train 1030 and the second planetary gear train 1040,
Their planet row characteristic parameter must be identical, and the type of planet row must be consistent.First planetary gear train 1030 is included too
Planetary gear 1032, planet carrier 1033 and the ring gear 1031 of sun 1034, three circumference uniform distributions of wheel.Wherein planet carrier 1033 and the 5th
The planet carrier 1023 of planetary gear train 1020 is integrated, and sun gear 1034 is connected with the spline of the first semiaxis 1402, ring gear 1031 with
The ring gear 1041 of second planetary gear train 1040 is integrated.Second planetary gear train 1040 includes 1044, three circles of sun gear
Zhou Junbu planetary gear 1042, planet carrier 1043 and ring gear 1041.Wherein planet carrier 1043 is fixed on driving axle housing, the sun
Wheel 1044 and the planet carrier 1053 of third planet train 1050 are integrated, and by bearings on the first semiaxis 1402, it is interior
Gear ring 1041 is integrated with the first ring gear 1031.
The single planetary row differential mechanism coupling mechanism 1300 is mainly made up of third planet train 1050.The third planet
Train 1050 includes planetary gear 1052, the planet carrier 1053 of 1054, three circumference uniform distributions of sun gear, ring gear 1051.Wherein too
Sun wheel 1054 is fixedly connected with differential carrier 1401, and planet carrier 1053 is fixedly connected with the second sun gear 1044, ring gear 1051
It is connected with the spline of the first semiaxis 1402.
Traditional bevel differential 1400 mainly by differential carrier 1401, the first semiaxis 1402, the second semiaxis 1403,
First axle shaft gear 1404, the second axle shaft gear 1405, two cone planetary gears 1406 and 1407, planetary gear shafts 1408
Form.Wherein the first axle shaft gear 1404 is connected with the spline of the first semiaxis 1402, the second axle shaft gear 1405 and the second semiaxis
1403 splines connect, and differential carrier 1401 is by bearings on the second semiaxis 1403.
The main drive motor reducing gear 1500 is located at the right side of drive axle, mainly by the He of the 6th planetary gear train 1060
7th planetary gear train 1070 is formed.6th planetary gear train 1060 includes the planetary gear of 1064, three circumference uniform distributions of sun gear
1062nd, planet carrier 1063 and the ring gear 1061 being fixed on driving axle housing.Wherein planet carrier 1063 is with differential carrier 1401
One, the planet carrier 1073 of sun gear 1064 and the 7th planetary gear train 1070 are integrated, and sun gear 1064 is existed by bearings
On second semiaxis 1403.Planetary gear 1072 of the 7th seniority among brothers and sisters star wheel series 1070 including 1074, three circumference uniform distributions of sun gear,
Planet carrier 1073 and the ring gear 1071 being fixed on driving axle housing.The wherein sky of sun gear 1074 and main drive motor 1002
Intracardiac armature spindle spline connection.
Preferably main drive motor reducing gear 1500 can be by single planetary gear train, multiple rows of planetary gear train or other forms
Reducing gear form, therefore the form for converting main drive motor reducing gear 1500 is not regarded as to wound of the present utility model
Newly.
The main drive motor 1002 is located at the right side of drive axle, and it is a cartridge type inner rotor motor, and connection is right
Second semiaxis 1403 of side wheel passes from its hollow rotor shafts endoporus.Cartridge type internal rotor and the 7th planetary gear train 1070
The spline of sun gear 1074 is connected, and main drive motor 1002 can be subtracted driving torque input main drive motor by sun gear 1074
In fast mechanism 1500, and it is applied on differential carrier 1401, is finally distributed on the first semiaxis 1402 and the second semiaxis 1403.Institute
Main drive motor 1002 is stated by bearings on the second semiaxis 1403, its stator and its housing are fixed with driving axle housing.
Embodiment two
As shown in Fig. 2 in the present embodiment, the first planetary gear train 1030 in double planet wheel rows of mixing TV coupling mechanisms 1200 and
Two planetary gear trains 1040 are single planetary bevel gear planet row, the third planet train in single planetary row differential mechanism coupling mechanism 1300
1050 be two-stage planet wheel planet row, and structure diagram is as shown in the figure.
Embodiment three
As shown in figure 3, in the present embodiment, the first planetary gear train 1030 in double planet wheel rows of mixing TV coupling mechanisms 1200 and
Two planetary gear trains 1040 are two-stage planet wheel planet row, the third line star-wheel in single planetary row differential mechanism coupling mechanism 1300
It 1050 is single planetary bevel gear planet row to be, structure diagram is as shown in the figure.
Example IV
As shown in figure 4, in the present embodiment, the first planetary gear train 1030 in double planet wheel rows of mixing TV coupling mechanisms 1200 and
Two planetary gear trains 1040 are two-stage planet wheel planet row, the third planet in single planetary row differential mechanism coupling mechanism 1300
Train 1050 is two-stage planet wheel planet row, and structure diagram is as shown in the figure.
Scheme shown in Fig. 1 to Fig. 4 is the electric differential described in the utility model with torque fixed direction allocation function
The achievable example structure scheme of device, it is contemplated that system inertia loss, running efficiency, the embodiment side shown in Fig. 1
Case is optimal preferred scheme, next to that scheme shown in Fig. 3, is scheme shown in Fig. 2 and Fig. 4 again.
Electric differential mechanism operation principle described in the utility model with torque fixed direction allocation function is as follows：
By taking the example structure sketch of the electric differential mechanism with torque fixed direction allocation function shown in Fig. 1 as an example, explanation
Operation principle.
When automobile straight-line travelling, left and right sides wheel driving torque is identical, is distributed without torque, therefore TV control electricity
Do not start without control electric signal, TV controlled motors in machine 1001, automobile is only driven by main drive motor 1002, main driving electricity
The moment of torsion that machine 1002 exports passes through the moment of torsion increasing action of main drive motor reducing gear 1500 to differential carrier 1401, due to passing
System bevel differential mechanism 1400 etc. divides the principle of moment of torsion, and the moment of torsion acted on differential carrier 1401 is distributed to the first semiaxis
1402 and second on semiaxis 1403, drives running car.It is on the contrary if setting the direction of rotation of wheel during Automobile drive as positive direction
For negative direction.Now, differential carrier 1401, the first semiaxis 1402 are identical with the rotary speed of the second semiaxis 1403, third planet
The planetary gear 1052 of train 1050 only revolves round the sun without rotation, therefore, ring gear 1051 and planet carrier 1053 with differential carrier 1401
Constant speed rotation.And the rotation of the sun gear 1034 due to the first planetary gear train 1030 and the ring gear 1051 of third planet train 1050
Rotary speed is identical, and the sun gear 1044 of the second planetary gear train 1040 is integrated with the planet carrier 1053 of third planet train 1050,
So constant speed rotation of sun gear 1044 in the planetary gear train 1040 of sun gear 1034 and second in the first planetary gear train 1030.Cause
For the first planetary gear train 1030 and the common gear ring of the second planetary gear train 1040, two sun wheel speeds are also identical, so planet carrier
1033 rotating speed is also identical with the rotating speed of planet carrier 1043, and planet carrier 1043 is fixed, rotating speed 0, so the rotating speed of planet carrier 1033
Also it is 0.Due to 1100 torques for changing the output of TV controlled motors 1001 of TV reducing gears, the moment of torsion of output is not being changed just
Negative direction, therefore, when automobile is kept straight on, the internal rotor rotating speed of TV controlled motors 1001 does not also start, no for 0, TV controlled motors
Output torque, automobile are only driven by main drive motor 1002, and torque distribution stream is as shown in Figure 5.
When the normal differential of automobile is turned, left and right sides wheel driving torque is identical, is distributed without torque, therefore TV is controlled
Do not start without control electric signal, TV controlled motors in motor 1001 processed, automobile is only driven by main drive motor 1002, main driving
The moment of torsion that motor 1002 exports passes through the moment of torsion increasing action of main drive motor reducing gear 1500 to differential carrier 1401, due to
Traditional bevel differential mechanism 1400 etc. divides the principle of moment of torsion, and the moment of torsion acted on differential carrier 1401 is distributed to the first half
On the semiaxis 1403 of axle 1402 and second, running car is driven.
It is on the contrary to be if set the direction of rotation of wheel during Automobile drive as positive direction so that the normal differential of automobile turns left as an example
Negative direction.Then single planetary row differential mechanism coupling mechanism 1050 is obtained by single planetary bevel gear planet row rotating speed formula：
nS5+k5nR5-(k5+1)nPC5=0
N in formulaS5For the rotating speed of 1050 sun gear of third planet train 1054, nR5Turn for the ring gear of third planet train 1051
Speed, nPC5For the planet carrier rotating speed of third planet train 1053, k5For third planet train planet row characteristic parameter.Because automobile is left
Turn, so the rotating speed of differential carrier 1401 is more than the rotating speed of the first semiaxis 1402, so：
nS5＞ nR5
So：
nPC5＞ nR5
The rotating speed of planet carrier 1053 i.e. in third planet train 1050 is more than the rotating speed of ring gear 1051, so for duplicate rows
In star row TV coupling mechanisms 1200, the rotating speed of sun gear 1034 in the first planetary gear train 1030 is less than in the second planetary gear train 1040
The rotating speed of sun gear 1044.Again because the first planetary gear train 1030 and the common gear ring of the second planetary gear train 1040, double planet wheel rows of mixing
TV coupling mechanisms 1200 then have：
nS3-(k+1)nPC3=nS4-(k+1)nPC4
N in formulaS3For the rotating speed of 1030 sun gear of the first planetary gear train 1034, nPC3For the planet carrier of the first planetary gear train 1030
1033 rotating speeds, nS4For the rotating speed of 1040 sun gear of the second planetary gear train 1044, nPC4For 1043 turns of 1040 planet carrier of the second planetary gear train
Speed, k are the planet row characteristic parameter of the first planetary gear train 1030 and the second planetary gear train 1040.And because：
nS3＜ nS4, and nPC4=0
So：
nPC3＜ 0
That is the rotating speed of planet carrier 1033 of the first planetary gear train 1030 is negative, so the internal rotor rotating speed of TV controlled motors 1001
Also it is negative.Therefore, when the normal differential of automobile turns left, TV controlled motors 1001 input without electric signal, without torque output, TV controls
The cartridge type internal rotor of motor processed is pulled by torque divider 2000 to be rotated with negative direction.Torque distribution stream is as shown in Figure 6.
Similarly can proper automobile normal differential when turning right, TV controlled motors 1001 input without electric signal, without torque output,
The cartridge type internal rotor of TV controlled motors is pulled by torque divider 2000 to be rotated with positive direction.Torque distribution stream is equally as schemed
Shown in 6.
It is when automobile high speed is turned, it is necessary to inboard wheel torque fixed direction allocation to outboard wheels is motor-driven to improve turning
During property.If setting the direction of rotation of wheel during Automobile drive as positive direction, otherwise it is negative direction, divides so that automobile turns left as an example
Analysis.Now output torque-the T of motor controller controls TV controlled motors 10010(T0For on the occasion of), the torque passes through TV reducing gears
After 1100 decelerations increase torsion, the torque of planet carrier 1033 is-iT in input double planet wheel rows of mixing TV coupling mechanisms 12000, wherein i is TV
The gearratio of reducing gear 1100.So the torque that sun gear 1034 inputs the first semiaxis 1402 in the first planetary gear train 1030 isThen TV controlled motors 1001 input the power into the planet carrier 1053 in single planetary row differential mechanism coupling mechanism 1300
Square isSo the torque that the ring gear 1051 in third planet train 1050 inputs the first semiaxis 1402 isThe torque that sun gear 1054 is inputted into differential carrier 1401 isBy differential carrier
The torque of 1401 deciles to the first semiaxis 1402 and the second semiaxis 1403 isSo finally by control electricity
The torque that machine 1001 inputs the first semiaxis 1402 is to input the first semiaxis 1402 by sun gear 1034 in the first planetary gear train 1030
Torque, ring gear 1051 inputs the torque of the first semiaxis 1402, the decile of differential carrier 1401 extremely in third planet train 1050
The torque three parts sum of first semiaxis 1402 is formed, its result be forBy TV controlled motors 1001
The torque for finally entering the second semiaxis 1403 isAs above as can be seen that being inputted by TV controlled motors 1001
It is big reversely to enter torque of the first semiaxis 1402 and the second semiaxis 1403 etc., therefore does not change total zigzag tread patterns torque, and with the
The connected left side wheel torque of one semiaxis 1402 is reduced, and the right side wheels torque increase being connected with the second semiaxis 1403, can be produced
Raw one yaw moment for helping to turn left, improve the left-hand bend mobility of automobile.It should be noted that now TV controls electricity
The rotating speed of machine 1001 is identical when turning left with normal differential.Torque distribution stream now is as shown in Figure 7.If it should be noted that TV
Controlled motor exports forward torque at this moment, then orientation is assigned to left side wheel by driving torque by right side wheels, will produce
One yaw moment for preventing vehicle oversteering, for keeping stability of automobile.
It can similarly obtain, when automobile high speed is turned right, motor controller controls TV controlled motors 1001 export positive turn
Square, a yaw moment for helping to turn right can be produced on the premise of total zigzag tread patterns torque is not changed, improves vapour
The right-hand bend mobility of car.It is it should be noted that identical when now the rotating speed of TV controlled motors 1001 is turned right with normal differential.
Torque distribution stream now is as shown in Figure 8.It should be noted that if TV controlled motors export negative sense torque at this moment, drive
Orientation is assigned to right side wheels by torque by left side wheel, will be produced a yaw moment for preventing vehicle oversteering, is used
In holding stability of automobile.
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment
Listed utilization, it can be applied to various suitable fields of the present utility model completely, for those skilled in the art,
Other modification is easily achieved, therefore under the universal limited without departing substantially from claim and equivalency range, this reality
Specific details is not limited to new and shown here as the legend with description.
Claims (10)
- A kind of 1. electric differential mechanism with torque fixed direction allocation function, it is characterised in that including：Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power Differential casing driving vehicle traveling；TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first gear ring, institute State the first sun gear to be fixedly and coaxially connected with the first semiaxis, first planet carrier and the output end of TV control drive mechanisms connect Connect；Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second gear ring, institute State the second planet carrier to be fixed on driving axle housing, the second gear ring is fixedly connected with the first gear ring；The rotatable branch of second sun gear Support is on the first semiaxis；3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd gear ring, institute The 3rd sun gear is stated to be fixedly connected with differential carrier, the third line carrier is fixedly connected with the second sun gear, the 3rd gear ring with First semiaxis is fixedly connected；Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
- 2. the electric differential mechanism according to claim 1 with torque fixed direction allocation function, it is characterised in that the TV controls Drive mechanism processed includes TV controlled motors and TV reducing gears.
- 3. the electric differential mechanism according to claim 2 with torque fixed direction allocation function, it is characterised in that the TV controls Motor processed has a hollow output shaft, and first semiaxis is rotatably supported at the hollow output shaft, and from hollow output Passed in axle.
- 4. the electric differential mechanism according to claim 2 with torque fixed direction allocation function, it is characterised in that the TV subtracts Fast mechanism includes：4th single epicyclic train, it includes the 4th sun gear, fourth line star-wheel, fourth line carrier and the 4th gear ring, institute State the 4th sun gear to be fixedly connected with hollow output shaft, the 4th gear ring is fixed on driving axle housing；5th single epicyclic train, it includes the 5th sun gear, fifth line star-wheel, fifth line carrier and the 5th gear ring, institute State the 5th sun gear to be fixedly connected with fourth line carrier, the 5th gear ring is fixed on driving axle housing, the fifth line carrier It is connected as control output end with the first planet carrier.
- 5. the electric differential mechanism according to claim 1 with torque fixed direction allocation function, it is characterised in that the main drive Motivation structure includes main drive motor and main gear reducer structure.
- 6. the electric differential mechanism according to claim 5 with torque fixed direction allocation function, it is characterised in that the main drive Dynamic motor has hollow output shaft, and the second semiaxis is rotatably supported at the hollow output shaft, and from hollow output shaft Pass.
- 7. the electric differential mechanism according to claim 5 with torque fixed direction allocation function, it is characterised in that the master subtracts Fast mechanism includes：7th single epicyclic train, it includes the 7th sun gear, the 7th planetary gear, the 7th planet carrier and the 7th gear ring, institute State the 7th sun gear to be fixedly connected with main drive motor output shaft, the 7th gear ring is fixed on driving axle housing；6th single epicyclic train, it includes the 6th sun gear, the 6th planetary gear, the 6th planet carrier and the 6th gear ring, institute State the 6th sun gear to be fixedly connected with the 7th planet carrier, the 6th gear ring is fixed on driving axle housing, the 6th planet carrier It is fixedly connected with differential carrier.
- A kind of 8. electric differential mechanism with torque fixed direction allocation function, it is characterised in that including：Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power Differential casing, driving vehicle traveling；TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；First single double pinions system, it includes the first sun gear, the first two-stage planet wheel, the first planet carrier and first Gear ring, first sun gear are fixedly and coaxially connected with the first semiaxis, and first planet carrier is defeated with TV control drive mechanisms Go out end connection；Second single double pinions system, it includes the second sun gear, the second row twin-stage star-wheel, the second planet carrier and second Gear ring, second planet carrier are fixed on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear can revolve What is turned is supported on the first semiaxis；3rd single epicyclic train, it includes the 3rd sun gear, the third line star-wheel, the third line carrier and the 3rd gear ring, institute The 3rd sun gear is stated to be fixedly connected with differential carrier, the third line carrier is fixedly connected with the second sun gear, the 3rd gear ring with First semiaxis is fixedly connected；Wherein, the second single double pinions system has identical characteristic parameter with the first single double pinions system.
- A kind of 9. electric differential mechanism with torque fixed direction allocation function, it is characterised in that including：Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power Differential casing, driving vehicle traveling；TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；First single epicyclic train, it includes the first sun gear, the first planetary gear, the first planet carrier and the first gear ring, institute State the first sun gear to be fixedly and coaxially connected with the first semiaxis, first planet carrier and the output end of TV control drive mechanisms connect Connect；Second single epicyclic train, it includes the second sun gear, the second planetary gear, the second planet carrier and the second gear ring, institute State the second planet carrier to be fixed on driving axle housing, the second gear ring is fixedly connected with the first gear ring；The rotatable branch of second sun gear Support is on the first semiaxis；3rd single double pinions system, it includes the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and the 3rd Gear ring, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the second sun gear, and the described 3rd Gear ring is fixedly connected with the first semiaxis；Wherein, the second single epicyclic train and the first single epicyclic train have identical characteristic parameter.
- A kind of 10. electric differential mechanism with torque fixed direction allocation function, it is characterised in that including：Main driving mechanism, it is arranged on differential mechanism side, its output end connected with differential housing, can be delivered to rotary power Differential casing, driving vehicle traveling；TV controls drive mechanism, and it is arranged on the opposite side of the differential mechanism, and control power is distributed for output torque；First single double pinions system, it includes the first sun gear, the first two-stage planet wheel, the first planet carrier and first Gear ring, first sun gear are fixedly and coaxially connected with the first semiaxis, and first planet carrier is defeated with TV control drive mechanisms Go out end connection；Second single double pinions system, it includes the second sun gear, the second two-stage planet wheel, the second planet carrier and second Gear ring, second planet carrier are fixed on driving axle housing, and the second gear ring is fixedly connected with the first gear ring；Second sun gear can revolve What is turned is supported on the first semiaxis；3rd single double pinions system, it includes the 3rd sun gear, the 3rd two-stage planet wheel, the third line carrier and the 3rd Gear ring, the 3rd sun gear are fixedly connected with differential carrier, and the third line carrier is fixedly connected with the second sun gear, and the described 3rd Gear ring is fixedly connected with the first semiaxis；Wherein, the second single double pinions system has identical characteristic parameter with the first single double pinions system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720424900.8U CN206682248U (en) | 2017-04-21 | 2017-04-21 | A kind of electric differential mechanism with torque fixed direction allocation function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720424900.8U CN206682248U (en) | 2017-04-21 | 2017-04-21 | A kind of electric differential mechanism with torque fixed direction allocation function |
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| CN206682248U true CN206682248U (en) | 2017-11-28 |
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| CN201720424900.8U Withdrawn - After Issue CN206682248U (en) | 2017-04-21 | 2017-04-21 | A kind of electric differential mechanism with torque fixed direction allocation function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979308A (en) * | 2017-04-21 | 2017-07-25 | 吉林大学 | A kind of electric differential mechanism with torque fixed direction allocation function |
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2017
- 2017-04-21 CN CN201720424900.8U patent/CN206682248U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979308A (en) * | 2017-04-21 | 2017-07-25 | 吉林大学 | A kind of electric differential mechanism with torque fixed direction allocation function |
| CN106979308B (en) * | 2017-04-21 | 2023-05-09 | 吉林大学 | Electric differential mechanism with torque directional distribution function |
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