CN107225970A - Power drive system - Google Patents
Power drive system Download PDFInfo
- Publication number
- CN107225970A CN107225970A CN201610178230.6A CN201610178230A CN107225970A CN 107225970 A CN107225970 A CN 107225970A CN 201610178230 A CN201610178230 A CN 201610178230A CN 107225970 A CN107225970 A CN 107225970A
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- China
- Prior art keywords
- gear
- output end
- drive system
- tooth set
- power drive
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
- B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
- B60K17/346—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear
- B60K17/3467—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear the transfer gear being a differential gear combined with a change speed gearing, e.g. range gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
- B60K17/165—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing provided between independent half axles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
Abstract
The invention provides a kind of power drive system, the power drive system includes：Center differential, center differential has input, the first output end and the second output end, and input exports power to the first output end and the second output end；Two 4 wheel driven switching devices, two 4 wheel driven switching devices include：Tooth set, two gear splined hubs, four gear splined hubs, tooth set are synchronized with the movement and can moved axially with respect to the first output end with the first output end, and tooth covers keeps off splined hub or four gear splined hubs for synchronous two；Front differential mechanism, front differential mechanism is connected with four gear splined hubs；Differential mechanism afterwards, rear differential mechanism is connected with the second output end and is connected with two gear splined hubs；Clutch, clutch is used to engage front differential mechanism and rear differential mechanism；Hold-down mechanism, hold-down mechanism is arranged for compressing clutch changing the power distribution ratio between front and rear differential mechanism.The power drive system has multiple drive modes, and vehicle is applied to various working.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of power drive system.
Background technology
In correlation technique, 4 wheel driven structure mainly has following three kinds of forms：Time sharing, AWD and in good time 4 wheel driven, three kind four
The difference in functionality and applicable road conditions of vehicle can be corresponded to respectively by driving structure, but three kinds of 4 wheel driven structure functions respectively have feature.
For time sharing, driver can carry out two switchings for driving pattern and 4 wheel driven pattern, but such a four according to wish to vehicle
Driving structure does not have mean differential, together with propons is mechanically locked at back axle during 4 wheel driven pattern, is only used for vehicle in short-term
Get rid of poverty or low attachment road traveling, because four vehicle wheel rotational speeds of vehicle when turning are different from, and now propons and back axle are firm
Property lock together, so the problem of turn inside diameter is difficult occurs.Need to stop simultaneously and carry out two drives, the switching of 4 wheel driven.In tool
Parking is also required to when having bottom gear operating mode to switch over.
For AWD, vehicle is constantly in four-wheel drive state, and transfer gear indoor design has mean differential, it is possible to achieve
Differential between propons and back axle, while limiting sliding device between being designed with bridge, the handling of vehicle is superior, but such a structure is often
Complicated, cost is higher, and drives patterns without two, and vehicle oil consumption drives high compared with two, is mainly used in high-end vehicle, together
When be also required to parking when with bottom gear operating mode and switch over.
For in good time 4 wheel driven, vehicle can in time carry out the switching between two drives, 4 wheel driven, but such a 4 wheel driven pattern according to road conditions
Reed time controll is carried out using multiplate clutch mostly, control model deviation is passive, and the moment of torsion distributed to propons is by clutch capacity
Limitation, it is impossible to for a long time for high speed 4 wheel driven state.
The content of the invention
In view of this, the present invention is directed to propose a kind of power drive system, vehicle can not be adapted to solve conventional power transmission system
Various working the problem of.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of power drive system, including：Center differential, the center differential has input, the first output end and
Two output ends, the input exports power to first output end and second output end；Two 4 wheel driven switching devices, institute
Stating two 4 wheel driven switching devices includes：Tooth set, two gear splined hubs, four gear splined hubs, the tooth set are synchronous with first output end
Motion and can first output end axial movement relatively, the tooth covered for the synchronous two gear splined hub or the four gears spline
Hub；Front differential mechanism, the front differential mechanism is connected with described four gear splined hubs；Differential mechanism, the rear differential mechanism and described second afterwards
Output end is connected and is connected with described two gear splined hubs；Clutch, the clutch be used for engage and disconnect the front differential mechanism and
The rear differential mechanism；Hold-down mechanism, the hold-down mechanism be arranged for compressing the clutch with change the front differential mechanism and
Power distribution ratio between the rear differential mechanism.
Further, it is provided between the tooth set and the two gears splined hub and between tooth set and the four gears splined hub
For the dental inlay mechanism steadily switched.
Further, the dental inlay mechanism is arranged to the alternate structure of stage teeth, and tooth sets in an inverted cone.
Further, the globe daisy key for allowing the tooth to cover axial movement is provided between first output end and tooth set.
Further, the power drive system also includes：Two gear reducing gears, the two gears reducing gear includes：Bottom gear
Gear train, the bottom gear gear train includes intermeshing bottom gear driving gear and bottom gear driven gear；Top gear gear
Group, the top gear gear train includes intermeshing top gear driving gear and top gear driven gear, and the top gear is driven
Gear is coaxially fixed with the bottom gear driving gear；High to low gear tooth set, the high to low gear tooth set is connected and used with the input
In the synchronous top gear driving gear or the bottom gear driven gear.
Further, the high to low gear tooth is covered between the top gear driving gear and high to low gear tooth set and the low speed
The dental inlay mechanism for steadily switching is provided between gear driven gear.
Further, the power drive system also includes：Motor；Gearshift rotating hub, the motor driving gearshift rotating hub fortune
It is dynamic to be moved axially with driving the tooth set and the high to low gear tooth to cover.
Further, the hold-down mechanism includes：Ball；Fixed groove is provided with fixed disk, the fixed disk；Movable disk,
Movable groove is provided with the movable disk, the fixed groove and the movable groove are relative to load the ball, wherein,
The depth of the movable groove changes in the circumferential so that the relatively described fixed disk of the movable disk, which is axially movable, is suitable for regulation
The compression degree of the clutch.
Further, the center differential includes：Gear ring, planetary gear, planet carrier and sun gear, the planetary gear are set in
On the planet carrier and it is engaged between the gear ring and the sun gear, the gear ring is the input, the sun gear is
Second output end, the planet carrier is first output end.
Further, the center differential includes：Gear ring, planetary gear, planet carrier and sun gear, the planetary gear are set in
On the planet carrier and it is engaged between the gear ring and the sun gear, the planet carrier is input, the gear ring is second
Output end, the sun gear is first output end.
Relative to prior art, power drive system of the present invention has the advantage that：
According to the present invention power drive system, it is possible to achieve multiple drive modes, such as two drive and rear-guard pattern, 4 wheel driven pattern,
4 wheel driven limits slip form type and 4 wheel driven lockdown mode, and vehicle can choose suitable drive pattern according to actual road conditions, so as to be lifted
The dynamic property and economy of vehicle, but also the security of vehicle can be ensured and by property.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, illustrative examples of the invention and
It illustrates to be used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is structural representation of the power drive system in vehicle described in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the described power drive system of an embodiment of the present invention；
Fig. 3 for an embodiment of the present invention described power drive system in dental inlay mechanism schematic diagram；
Fig. 4 is the schematic diagram of the described power drive system of an embodiment of the present invention, and power drive system is in two drive moulds
Formula；
Fig. 5 is the schematic diagram of the described power drive system of an embodiment of the present invention, and power drive system is in 4 wheel driven height
Fast mode；
Fig. 6 is the schematic diagram of the described power drive system of an embodiment of the present invention, and power drive system is low in 4 wheel driven
Fast mode；
Fig. 7 is the schematic diagram of the described power drive system of an embodiment of the present invention, and power drive system is in 4 wheel driven height
Speed limit slip form type；
Fig. 8 is the schematic diagram of the described power drive system of an embodiment of the present invention, and power drive system is low in 4 wheel driven
Speed limit slip form type；
Fig. 9 is the schematic diagram of the described power drive system of another embodiment of the invention.
Description of reference numerals：
Power drive system 100；
Center differential 10；Gear ring 11；Planetary gear 12；Planet carrier 13；Sun gear 14；
Two 4 wheel driven switching devices 20；Tooth set 21；Two gear splined hubs 22；Four gear splined hubs 23；Dental inlay mechanism 24；Globe daisy key
25；
Front differential mechanism 30；Driving-chain 31；Differential mechanism 40 afterwards；Clutch 50；
Hold-down mechanism 60；Ball 61；Fixed disk 62；Movable disk 63；
Two gear reducing gears 70；Bottom gear gear train 71；Bottom gear driving gear 71a；Bottom gear driven gear 71b；At a high speed
Keep off gear train 72；Top gear driving gear 72a；Top gear driven gear 72b；High to low gear tooth set 73；
Motor 80；Gearshift rotating hub 81；Lubricating system 90；
Engine 200；Speed changer 300.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Below with reference to the accompanying drawings power drive system 100 according to embodiments of the present invention is described in detail, the power drive system 100 can
To apply on vehicle.
Power drive system 100 according to embodiments of the present invention can include：Center differential 10, two 4 wheel driven switching devices 20,
Front differential mechanism 30, rear differential mechanism 40 and clutch 50.With reference to shown in Fig. 1 and Fig. 2, center differential 10 have input,
First output end and the second output end, input export power to the first output end and the second output end.Wherein, engine 200
Power after the gearshift adjustment of speed changer 300 can for delivery to center differential 10 input, input can be by
The power of engine 200 distributes to the first output end and the second output end.
As shown in Fig. 2 two 4 wheel driven switching devices 20 include：Tooth set 21, two keeps off the gear splined hub 23 of splined hub 22, four, tooth set
21 are synchronized with the movement with the first output end, and tooth set 21 can be moved axially with respect to the first output end, and tooth set 21 is used for synchronous two
Keep off the gear splined hub 23 of splined hub 22 or four.Front differential mechanism 30 is connected with four gear splined hubs 23, rear differential mechanism 40 and second defeated
Go out end to be connected, and rear differential mechanism 40 is also connected with two gear splined hubs 22.It is understood that when tooth set 21 synchronous two is kept off
During splined hub 22, the first output end can output power to rear differential mechanism 40, and the second output end can be direct by power
Export to rear differential mechanism 40, now vehicle drives with two and travelled in the form of rear-guard.When tooth set 21 synchronous four keeps off splined hub 23,
First output end can output power to front differential mechanism 30, and power can be directly output to rear differential mechanism 40 by the second output end,
Now vehicle is travelled in the form of 4 wheel driven.
Clutch 50 can be used for engaging and disconnect front differential mechanism 30 and rear differential mechanism 40, when clutch 50 is in engagement state
When, the power being output to from engine 200 on rear differential mechanism 40 can pass to front differential mechanism 30 by clutch 50, so that
Realize the 4 wheel driven pattern of vehicle.Moreover, hold-down mechanism 60 is arranged for compressing clutch 50 changing the He of front differential mechanism 30
Power distribution ratio between differential mechanism 40 afterwards.Hold-down mechanism 60 can compress the degree of clutch 50 and change point by adjusting
The power distribution ratio of dispensing front differential mechanism 30 and rear differential mechanism 40.
When hold-down mechanism 60 compresses clutch 50 completely, the dynamic torque ratio of front and back wheel is 50:50, before now vehicle is in
Back axle lockup state so that vehicle can pass through extreme operating condition, such as non-paving road.
Thus, power drive system 100 according to embodiments of the present invention, it is possible to achieve multiple drive modes, such as two drive and after
Drive pattern, 4 wheel driven pattern, 4 wheel driven limit slip form type and 4 wheel driven lockdown mode, vehicle can choose suitable driving according to actual road conditions
Pattern, so as to lift the dynamic property and economy of vehicle, but also can ensure the security of vehicle and by property.
It should be noted that above-mentioned multiple drive modes will be described in detail in content below.
According to a preferred embodiment of the present invention, as shown in Figures 2 and 3, tooth set 21 and two gear splined hub 22 between and
The dental inlay mechanism 24 for steadily switching is provided between the gear splined hub 23 of tooth set 21 and four.Dental inlay mechanism 24 can bear to cut
The impact of mold changing formula, so that vehicle need not stop when switching drive pattern, and then can lift the performance of vehicle.
Alternatively, as shown in figure 3, dental inlay mechanism 24 can be arranged to the alternate structure of stage teeth, and tooth is arranged to back taper
Shape.The tooth of back taper can improve the degree of engagement of dental inlay mechanism 24, effectively switch mode can be prevented not firm.Wherein,
The tooth root and tooth top of tooth are provided with circular arc, so as to improve the ability that the impact of switch mode is born by dental inlay mechanism 24.
Alternatively, as shown in Fig. 2 the ball for allowing tooth to cover 21 axial movements can be provided between the first output end and tooth set 21
Spline 25.Thus, while ensureing that the power transmission between the first output end and tooth set 21 is reliable, tooth set 21 can be to the left
Or move right, it thereby may be ensured that the reliability of power drive system 100.When tooth set 21 is moved to the left, tooth set 21
Can be synchronous with two gear splined hubs 22, when tooth set 21 moves right, tooth set 21 can be synchronous with four gear splined hubs 23.
According to the specific embodiment of the present invention, as shown in Fig. 2 power drive system 100 can also include two gear reductors
Structure 70, two gear reducing gears 70 can include：Bottom gear gear train 71, top gear gear train 72 and high to low gear tooth set 73.
Bottom gear gear train 71 includes intermeshing bottom gear driving gear 71a and bottom gear driven gear 71b, top gear gear train
72 include intermeshing top gear driving gear 72a and top gear driven gear 72b, top gear driven gear 72b and low speed
Gear driving gear 71a is coaxially fixed.High to low gear tooth set 73 is connected with input, and high to low gear tooth set 73 is used for synchronous high-speed
Keep off driving gear 72a or bottom gear driven gear 71b.
Wherein, two power transmission shafts being set up in parallel are provided with two gear reducing gears 70, wherein, top gear driving gear 72a
Empty set is distinguished on first power transmission shaft with bottom gear driven gear 71b, and high to low gear tooth set 73 is fixed on first power transmission shaft,
First power transmission shaft is connected with input.Top gear driven gear 72b and bottom gear driving gear 71a is fixed and is set in the second biography
On moving axis.
When synchronous first power transmission shaft of high to low gear tooth set 73 and top gear driving gear 72a, the power of engine 200 is in warp
Cross after the gearshift adjustment of speed changer 300 and input is transferred directly to by top gear driving gear 72a.When high to low gear tooth covers 73
When synchronous first power transmission shaft and bottom gear driven gear 71b, the power of engine 200 is in the change velocity modulation by speed changer 300
After section by top gear driving gear 72a, top gear driven gear 72b, second power transmission shaft, bottom gear driving gear 71a,
Bottom gear driven gear 71b, high to low gear tooth set 73 and first power transmission shaft are transferred to input.In the process, engine
200 power is exported to input in two gear reducing gears 70 by double reduction, and power can be caused to have slow-speed of revolution height torsion
The characteristic of square so that vehicle is suitable to speed operation.
Alternatively, as shown in figure 1, high to low gear tooth cover 73 and top gear driving gear 72a between and high to low gear tooth cover 73 Hes
The dental inlay mechanism 24 for steadily switching is provided between bottom gear driven gear 71b.Apply in two gear reducing gears 70
Dental inlay mechanism 24 is identical with the above-mentioned structure of dental inlay mechanism 24, can be in order to the switching between gear, and dental inlay mechanism 24
The impact of gearshift can be born, so that vehicle need not stop in shift process.
Wherein, above-mentioned tooth set 21 and high to low gear tooth set 73 can stir its axial movement by corresponding shift fork.Specifically
Ground, as shown in Fig. 2 power drive system 100 can also include：Motor 80 and gearshift rotating hub 81, the driving gearshift of motor 80
Rotating hub 81 is moved to be moved axially with sliding tooth set 21 and high to low gear tooth set 73.It is provided between gearshift rotating hub 81 and tooth set 21
One shift fork, is provided with another shift fork between gearshift rotating hub 81 and high to low gear tooth set 73, is set on the surface for rotating hub 81 of shifting gears
Groove is equipped with, the end of two shift forks can be stretched into corresponding groove, when rotating hub 81 of shifting gears is rotated, two shift fork axial directions
The corresponding tooth set 21 of shift fork or high to low gear tooth set 73.
A kind of arrangement form of optional hold-down mechanism 60 is described below in detail.As shown in Fig. 2 hold-down mechanism 60 can include：
It is recessed that the activity of being provided with is provided with fixed groove, movable disk 63 on ball 61, fixed disk 62 and movable disk 63, fixed disk 62
Groove, fixed groove and movable groove are relative to load ball 61, wherein, the depth of movable groove changes in the circumferential so that activity
Disk 63 is relatively fixed disk 62 and is axially movable the compression degree for being suitable for adjusting clutch 50.
When the depth of movable groove is smaller, movable disk 63 is relatively fixed disk 62 and is moved to the left, the left-handed watch face pressure of movable disk 63
The friction plate of tight clutch 50, so as to change the power distribution ratio between front and back wheel；When the depth of movable groove is larger,
Movable disk 63 is relatively fixed disk 62 and moved right, and the compression journey to the friction plate of clutch 50 is loosened in the left surface of movable disk 63
Degree, so as to change the power distribution ratio between front and back wheel.It should be noted that when front and back wheel needs to be maintained at the power point
During proportioning, movable disk 63 can stop operating, and be maintained at the position.
The arrangement form of two kinds of optional center differentials 10 is described below in detail.According to a preferred embodiment of the present invention,
As shown in Fig. 2 center differential 10 can include：Gear ring 11, planetary gear 12, planet carrier 13 and sun gear 14, planet
Wheel 12 is arranged in planet carrier 13, and planetary gear 12 is engaged between gear ring 11 and sun gear 14, and gear ring 11 is input
End, sun gear 14 is the second output end, and planet carrier 13 is the first output end.
According to a further advantageous embodiment of the invention, as shown in figure 9, center differential 10 can include：Gear ring 11, OK
Star-wheel 12, planet carrier 13 and sun gear 14, planetary gear 12 are arranged in planet carrier 13, and planetary gear 12 is engaged on tooth
Between circle 11 and sun gear 14, planet carrier 13 is input, and gear ring 11 is the second output end, and sun gear 14 is first defeated
Go out end.
Alternatively, as shown in Fig. 2 power drive system 100 can also include：Lubricating system 90, lubricating system 90 is set
In the side of center differential 10, and lubricating system 90 is connected with the gear ring 11 of center differential 10, and gear ring 11 can be with
Driving lubricating system 90 works, so that lubricating oil flows into center differential 10, two 4 wheel driven switching devices 20, two gear
In reducing gear 70 and clutch 50, and then forced feed lubrication can be carried out to above-mentioned multiple parts, above-mentioned multiple portions can be extended
Life-span of part and the functional reliability of the above-mentioned multiple parts of lifting, can be lifted power drive system 100 functional reliability and
Extend the service life of power drive system 100.
The multiple drive modes of power drive system 100 as shown in Figure 2 are described in detail below in conjunction with the accompanying drawings.
Two drive and rear-guard pattern：As shown in figure 4, high to low gear tooth covers 73 synchronous high-speeds gear driving gear 72a and gear ring 11, tooth
Set 21 synchronous two keeps off splined hub 22, and the power of engine 200 is transferred to respectively by top gear driving gear 72a and gear ring 11
Partial power on sun gear 14 and planet carrier 13, sun gear 14 is directly output to the portion on rear differential mechanism 40, planet carrier 13
Sub-power is exported to rear differential mechanism 40 by the gear splined hub 22 of tooth set 21 and two.
4 wheel driven fast mode：As shown in figure 5, high to low gear tooth covers 73 synchronous high-speeds gear driving gear 72a and gear ring 11, tooth set
21 synchronous four keep off splined hub 23, and the power of engine 200 is transferred to too respectively by top gear driving gear 72a and gear ring 11
Partial power on sun wheel 14 and planet carrier 13, sun gear 14 is directly output to the part on rear differential mechanism 40, planet carrier 13
Power is exported to front differential mechanism 30 by the gear splined hub 23 of tooth set 21 and four.Wherein, as shown in Fig. 2 the He of front differential mechanism 30
Driving-chain 31 is provided between four gear splined hubs 23, driving-chain 31 can include the first gear being connected with four gear splined hubs 23
The second gear being connected with front differential mechanism 30, first gear is connected with second gear by driving chain.
4 wheel driven low-speed mode：As shown in fig. 6, high to low gear tooth covers 73 synchronization bottom gear driven gear 71b and gear ring 11, tooth set
21 synchronous four keep off splined hub 23, and the power of engine 200 is passing through top gear active after the gearshift adjustment of speed changer 300
Gear 72a, top gear driven gear 72b, second power transmission shaft, bottom gear driving gear 71a, bottom gear driven gear 71b,
High to low gear tooth set 73 and first power transmission shaft are transferred to gear ring 11, and power is distributed to sun gear 14 and planet carrier 13 by gear ring 11,
The partial power that partial power on sun gear 14 is directly output on rear differential mechanism 40, planet carrier 13 covers 21 and four by tooth
Gear splined hub 23 is exported to front differential mechanism 30.
The high speed limit slip form type of 4 wheel driven：As shown in fig. 7, i.e. on the basis of 4 wheel driven fast mode, control hold-down mechanism 60 is adjusted
To the compression degree of clutch 50 to distribute to the power ratio of front differential mechanism 30 and rear differential mechanism 40.
4 wheel driven low speed limits slip form type：As shown in figure 8, i.e. on the basis of 4 wheel driven low-speed mode, control hold-down mechanism 60 is adjusted
To the compression degree of clutch 50 to distribute to the power ratio of front differential mechanism 30 and rear differential mechanism 40.
4 wheel driven lockdown mode：I.e. in 4 wheel driven fast mode or 4 wheel driven low-speed mode, control hold-down mechanism 60 compresses clutch completely
Device 50 so that the dynamic torque ratio of front and back wheel is 50:50, the now rigid locking of front-rear axle.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all spiritual and originals in the present invention
Within then, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of power drive system (100), it is characterised in that including：
Center differential (10), the center differential (10) has input, the first output end and the second output end, institute
State input and export power to first output end and second output end；
Two 4 wheel driven switching devices (20), the two 4 wheel drivens switching device (20) includes：Tooth set (21), two gear splined hubs (22),
Four gear splined hubs (23), the tooth set (21) is synchronized with the movement with first output end and can relatively described first output end axle
To movement, the tooth set (21) is used for the synchronous two gear splined hub (22) or the four gear splined hub (23)；
Front differential mechanism (30), the front differential mechanism (30) is connected with described four gear splined hubs (23)；
Differential mechanism (40) afterwards, the rear differential mechanism (40) be connected with second output end and with described two gear splined hubs (22)
It is connected；
Clutch (50), the clutch (50) is used to engage and disconnect the front differential mechanism (30) and the rear differential mechanism
(40)；
Hold-down mechanism (60), the hold-down mechanism (60) be arranged for compressing the clutch (50) with change it is described before
Power distribution ratio between differential mechanism (30) and the rear differential mechanism (40).
2. power drive system (100) according to claim 1, it is characterised in that the tooth set (21) and described
It is provided between two gear splined hubs (22) and between the tooth set (21) and the four gear splined hub (23) for steadily cutting
The dental inlay mechanism (24) changed.
3. power drive system (100) according to claim 2, it is characterised in that the dental inlay mechanism (24) sets
The alternate structure of stage teeth is set to, and tooth sets in an inverted cone.
4. power drive system (100) according to claim 1, it is characterised in that first output end with it is described
The globe daisy key (25) for allowing the tooth set (21) to move axially is provided between tooth set (21).
5. power drive system (100) according to claim 1, it is characterised in that also include：Two gear reducing gears
(70), the two gear reducing gear (70) includes：
Bottom gear gear train (71), the bottom gear gear train (71) includes intermeshing bottom gear driving gear (71a)
With bottom gear driven gear (71b)；
Top gear gear train (72), the top gear gear train (72) includes intermeshing top gear driving gear (72a)
With top gear driven gear (72b), the top gear driven gear (72b) and the bottom gear driving gear (71a) are coaxial
It is fixed；
High to low gear tooth set (73), the high to low gear tooth set (73) is connected with the input and for the synchronous top gear master
Moving gear (72a) or the bottom gear driven gear (71b).
6. power drive system (100) according to claim 5, it is characterised in that the high to low gear tooth set (73)
Between the top gear driving gear (72a) and the high to low gear tooth set (73) and the bottom gear driven gear (71b)
Between be provided with dental inlay mechanism for steadily switching.
7. power drive system (100) according to claim 5, it is characterised in that also include：
Motor (80)；
Rotating hub of shifting gears (81), motor (80) the driving gearshift rotating hub (81) is moved to drive the tooth set (21)
With the high to low gear tooth set (73) axial movement.
8. power drive system (100) according to claim 1, it is characterised in that hold-down mechanism (60) bag
Include：
Ball (61)；
Fixed groove is provided with fixed disk (62), the fixed disk (62)；
Movable groove, the fixed groove and the movable groove phase are provided with movable disk (63), the movable disk (63)
To load the ball (61), wherein, the depth of the movable groove changes in the circumferential so that the movable disk (63)
Relatively described fixed disk (62) is axially movable the compression degree for being suitable for adjusting the clutch (50).
9. power drive system (100) according to claim 1, it is characterised in that the center differential (10)
Including：
Gear ring (11), planetary gear (12), planet carrier (13) and sun gear (14), the planetary gear (12) are set in institute
State on planet carrier (13) and be engaged between the gear ring (11) and the sun gear (14), the gear ring (11) is institute
Input is stated, the sun gear (14) is second output end, and the planet carrier (13) is first output end.
10. power drive system (100) according to claim 1, it is characterised in that the center differential (10)
Including：
Gear ring (11), planetary gear (12), planet carrier (13) and sun gear (14), the planetary gear (12) are set in institute
State on planet carrier (13) and be engaged between the gear ring (11) and the sun gear (14), the planet carrier (13) is
Input, the gear ring (11) is the second output end, and the sun gear (14) is first output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178230.6A CN107225970A (en) | 2016-03-25 | 2016-03-25 | Power drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610178230.6A CN107225970A (en) | 2016-03-25 | 2016-03-25 | Power drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107225970A true CN107225970A (en) | 2017-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610178230.6A Pending CN107225970A (en) | 2016-03-25 | 2016-03-25 | Power drive system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637219A (en) * | 2020-06-16 | 2020-09-08 | 蜂巢传动科技河北有限公司 | Actuator of transfer case |
| CN112977387A (en) * | 2021-03-10 | 2021-06-18 | 中国第一汽车股份有限公司 | Vehicle control method, device, electronic apparatus, and medium |
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| CN201296167Y (en) * | 2008-09-02 | 2009-08-26 | 黄艳斌 | Power transmission system for four-wheel drive motor vehicle |
| CN103982632A (en) * | 2014-05-16 | 2014-08-13 | 徐工集团工程机械股份有限公司 | Transfer case for engineering vehicle and hinging dumper |
| US20140336001A1 (en) * | 2011-12-22 | 2014-11-13 | Toyota Jidosha Kabushiki Kaisha | Transfer device |
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| US20040220010A1 (en) * | 2002-02-05 | 2004-11-04 | Williams Randolph C. | Transfer case with a tri-mode bi-directional clutch assembly |
| CN101125528A (en) * | 2007-09-21 | 2008-02-20 | 辽宁曙光汽车集团股份有限公司 | Speed changing driving device for special four-wheel offroad vehicles |
| CN201296167Y (en) * | 2008-09-02 | 2009-08-26 | 黄艳斌 | Power transmission system for four-wheel drive motor vehicle |
| US20140336001A1 (en) * | 2011-12-22 | 2014-11-13 | Toyota Jidosha Kabushiki Kaisha | Transfer device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637219A (en) * | 2020-06-16 | 2020-09-08 | 蜂巢传动科技河北有限公司 | Actuator of transfer case |
| CN111637219B (en) * | 2020-06-16 | 2021-12-28 | 蜂巢传动科技河北有限公司 | Actuator of transfer case |
| CN112977387A (en) * | 2021-03-10 | 2021-06-18 | 中国第一汽车股份有限公司 | Vehicle control method, device, electronic apparatus, and medium |
| CN112977387B (en) * | 2021-03-10 | 2022-09-16 | 中国第一汽车股份有限公司 | Vehicle control method, device, electronic apparatus, and medium |
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Application publication date: 20171003 |
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