CN208474480U - A kind of four-wheel-drive transfer case of differential and differential locking - Google Patents
A kind of four-wheel-drive transfer case of differential and differential locking Download PDFInfo
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- CN208474480U CN208474480U CN201820754850.4U CN201820754850U CN208474480U CN 208474480 U CN208474480 U CN 208474480U CN 201820754850 U CN201820754850 U CN 201820754850U CN 208474480 U CN208474480 U CN 208474480U
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- shift fork
- forerunner
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- 239000002243 precursor Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 241001656951 Protheca Species 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 102000004315 Forkhead Transcription Factors Human genes 0.000 claims description 20
- 108090000852 Forkhead Transcription Factors Proteins 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000011295 pitch Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 241001416181 Axis axis Species 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a kind of four-wheel-drive transfer cases, including box assembly, input shaft assembly, rear-guard component, differential shaft assembly, precursor assemblies and pull-fork assembly, shift fork is connected with the input shaft gear, shift fork can drive the input shaft gear can sliding axially along the input shaft, input shaft gear can engage with the rear-guard shaft gear of rear-guard component；The differential shaft assembly includes rear axle assemblies, preceding shaft assembly and differential assembly, the rear axle gear of rear axle assemblies is engaged with rear-guard gear, forerunner's gear of preceding shaft assembly is engaged with forerunner's axis driven gear of precursor assemblies, differential transmission systems are engaged and formed respectively in the planetary gear two sides of differential assembly with the rear axle differential gear of the front axle differential gear of preceding shaft assembly and rear axle assemblies, and the input shaft gear can be engaged with differential mechanism driven gear and/or forerunner's gear.The utility model performance is stablized, safe and reliable, compact-sized, can get forerunner, rear-guard, differential 4 wheel driven, differential locking 4 wheel driven multiple drive modes.
Description
Technical field
The utility model belongs to transfer case technical field, and in particular to the four-wheel-drive transfer case of a kind of differential and differential locking.
Background technique
Mainly by 3 kinds of forerunner, rear-guard and 4 wheel driven etc. in Automobile drive mode.The 4 wheel driven system on passenger car is applied at present
System, mainly there is time sharing, in due course 4 wheel driven and full-time four-wheel drive etc..Wherein, time sharing system is due to needing without inter-axle differential
It wants driver according to road conditions, reasonably selects 4 wheel driven or two drive schemes, it is improper to select, it is easy to lead to drive system internal power stream
Consumption.The shortcomings that in due course 4 wheel driven can overcome time sharing, principle are to judge road conditions using computer technology, automatically select two drives
Or 4 wheel driven, this system are typically used on high-grade passenger car due to needing electric-control system to assist.Full-time four-wheel drive system is due to axis
Between be mounted with torsional differential gear, can realize 4 wheel driven in whole process, not need manually or electric-control system intervention, but torsional differential gear knot
Structure is complicated, expensive, only uses on a small number of high-end vehicles.Using poor between each bridge of penetration type drive axle on heavy goods vehicle
Fast 4 wheel driven technology, due to the emphasis of penetration type drive axle be increase rear-guard driving force, and and non-composed a11wheel drive structure, therefore
Requirement to differential locking is low, frequently with open type differential between penetration type drive axle.
However, in frame-steered tractor transport vehicle field, since headstock and railway carriage are turned in the opposite deflection of hinge joint, and
The operating condition variation of tractor is greatly.Rear wheel drive is usually needed when driving in underloading good road surface, is adopted when being lightly loaded non-rigid road traveling
With front-wheel drive, differential 4 wheel driven is needed when driving in fully loaded good road surface, differential locking four is needed when being fully loaded with non-rigid road surface
It drives.
In conclusion it is urgent to provide a kind of performances to stablize, and it is safe and reliable, compact-sized, realize the 4 wheel driven point of various modes
Dynamic case.
Utility model content
The purpose of the utility model is to provide a kind of performances to stablize, safe and reliable, compact-sized, realizes the four of various modes
Drive transfer case.
Above-mentioned purpose is to be achieved through the following technical solutions: the four-wheel-drive transfer case of a kind of differential and differential locking, including case
Body component, input shaft assembly, rear-guard component, differential shaft assembly, precursor assemblies and pull-fork assembly, the box assembly include at least
Cabinet, the input shaft assembly, rear-guard component, differential shaft assembly, precursor assemblies and pull-fork assembly are fixed on the cabinet, institute
The input shaft gear that input shaft assembly includes at least input shaft and is arranged on input shaft is stated, the input shaft can drive described
Input shaft gear rotation, the pull-fork assembly include at least shift fork, and the shift fork is connected with the input shaft gear, the shift fork
Can drive the input shaft gear can sliding axially along the input shaft, the precursor assemblies include at least forerunner's axis and setting
Forerunner's axis driven gear on forerunner's axis, the rear-guard component include at least rear-guard axis and are arranged on the rear-guard axis
Rear-guard shaft gear, the rear-guard axis are connected with input shaft by the first needle bearing, and the input shaft gear can be with the rear-guard
Shaft gear engagement；The differential shaft assembly includes rear axle assemblies, preceding shaft assembly and differential assembly, and the rear axle assemblies include at least
Rear axle, rear axle gear and rear axle differential gear；The preceding shaft assembly includes at least front axle, forerunner's gear, front axle differential gear；Institute
Differential assembly is stated including at least differential mechanism driven gear, planetary gear shaft, planet wheel carrier, planetary gear thrust axle sleeve, row
Star gear, planet wheel carrier axle sleeve, planetary gear axle sleeve and thrust axle sleeve；The front axle and rear axle pass through the second needle bearing
It is connected, the differential mechanism driven gear is fixed on the planet wheel carrier, and the planet wheel carrier passes through planetary gear
Pedestal axle sleeve is mounted on the rear axle and can rotate in rear axle, and the rear axle differential gear and rear axle gear are arranged after described
On axis, the rear axle gear is located at the outside of the rear axle differential gear, and the rear axle gear is engaged with the rear-guard gear, institute
It states front axle differential gear and forerunner's gear is arranged on the front axle, forerunner's gear is located at the outer of the front axle differential gear
Side, forerunner's gear are engaged with forerunner's axis driven gear, the planet wheel carrier and the rear axle differential gear, preceding
Thrust axle sleeve is respectively equipped between axis differential gear, the thrust axle sleeve is respectively sleeved on the front axle and rear axle, the row
Star gear pedestal, rear axle differential gear, front axle differential gear are in contact with the thrust axle sleeve；It is set on the planet wheel carrier
There are multiple planetary gear shafts, the planetary gear is set in the planetary gear shaft by the planetary gear shaft, described
Planetary gear thrust axle sleeve, the planet wheel carrier, planetary gear are equipped between planet wheel carrier and the planetary gear
It is in contact with the planetary gear thrust axle sleeve；The planetary gear two sides respectively with front axle differential gear and rear axle differential tooth
Wheel engages and forms differential transmission systems, and the input shaft gear can be engaged with differential mechanism driven gear and/or forerunner's gear.
It is preferred that planetary gear shaft and planetary gear circumferentially arrange that quantity is more than or equal to 2, it is less than or equal to 4.
During concrete application, external impetus is transferred to input shaft, is transferred to input shaft gear, shift fork band by input shaft
Driven input shaft gear is moved along input shaft, realize input shaft gear engaged with forerunner's gear, simultaneously with differential mechanism driven gear, preceding
Gear engagement is driven, engages with differential mechanism driven gear, engaged with rear-guard shaft gear, and then realizes different location power transmission；
At leftmost side forerunner position, input shaft gear is only engaged with forerunner's gear shift fork axle, and forerunner's gear passes power
The forerunner's axis driven gear engaged is passed, forerunner's axis driven gear drives the rotation of forerunner's axis, realizes forerunner, at this point, due to
Transmission that planet wheel carrier is unpowered, it is free to rotate, independent forerunner's state cannot be in rear-guard output power, system.
For shift fork axle at intermediate differential locking 4 wheel driven position, input shaft gear and forerunner's gear and differential mechanism driven gear are same
When engage, forerunner's gear imparts power to the forerunner's axis driven gear engaged, and forerunner's axis driven gear drives forerunner's axis
Rotation, realizes forerunner, and power is transferred to planet wheel carrier, is then passed to planetary gear shaft and row by differential mechanism driven gear
Star gear is transferred to rear axle differential gear and rear axle by planetary gear, then after being passed to by rear axle gear and engaging
Shaft gear is driven, finally to rear-guard axis, realizes rear-guard；Since input shaft gear and forerunner's gear and differential mechanism driven gear are nibbled simultaneously
It closes, planet wheel carrier is identical with the revolving speed of forerunner's axis, front and back indifferential, is in differential locking 4 wheel driven state.
At intermediate differential 4 wheel driven position, input shaft gear is only engaged with differential mechanism driven gear shift fork axle, differential mechanism from
Power is transferred to planet wheel carrier by moving gear, and power is transferred to planetary gear shaft and planetary gear by planet wheel carrier,
It is transferred to front axle differential gear and rear axle differential gear respectively by planetary gear, is then passed to front axle and rear axle, then distinguish
It is delivered separately to the forerunner's axis driven gear engaged engagement and rear-guard shaft gear by forerunner's gear and rear axle gear,
Finally differential 4 wheel driven is realized to forerunner's axis and rear-guard axis.
For shift fork axle at rightmost side rear-guard position, input shaft tooth and rear-guard shaft gear engaged transmission pass through rear-guard shaft gear
Power is transferred to rear-guard axis, realizes that input shaft and rear-guard axis are coaxially connected, realizes independent rear-guard.
Since transfer case is mounted between the main reducing gear of drive axle of front and back, belong to speed end, the differential group in transfer case
Part revolving speed is high, and stress is small, and between centers rotational speed difference is small.Therefore differential assembly is simplified and has been strengthened, it is specific: to simplify difference first
Fast device shell, traditional differential mechanism, axle shaft gear, planetary gear, planetary gear shaft are all mounted on differential mechanism shell, shell both ends
It is fixed on cabinet.The differential assembly of the utility model replaces differential carrier with planet wheel carrier, and passes through axle sleeve set
It on rear axle, is positioned with thrust axle sleeve, while realizing that structure simplifies, moreover it is possible to rear axle driven gear be installed, and pass through cunning
Dynamic power input gear, realizes the switching of rear-guard, differential 4 wheel driven, differential locking 4 wheel driven；Next enhances planetary gear, due to difference
Fast device is in speed end, although between centers rotational speed difference is small, is also strengthened to planetary gear mounting condition, in planetary gear
End and outside are mounted with axle sleeve and thrust axle sleeve respectively, reduce the friction of planetary gear and planet wheel carrier and planetary gear shaft
Power.
The utility model performance is stablized, safe and reliable, compact-sized, it can be achieved that the haulage vehicle of installing the utility model exists
It is lightly loaded good road surface rear wheel drive when driving, using front-wheel drive when being lightly loaded non-rigid road traveling, in fully loaded good road surface row
Differential 4 wheel driven is needed when sailing, differential locking 4 wheel driven is needed when being fully loaded with non-rigid road surface, is conducive to raising tractor and is engaged in field
The driving capability of transhipment and road transport, prevents tyre slip or sunken vehicle, meets the needs of various road conditions different driving mode.
Further technical solution is that the rear-guard shaft gear is equipped with internal tooth and external tooth, and the rear-guard shaft gear can pass through
Internal tooth and the input shaft gear internal messing, the rear-guard shaft gear pass through external tooth and the rear axle gear external toothing.In this way, dialling
At rightmost side rear-guard position, input shaft gear and rear-guard axis are driven fork shaft by inside engaged gear, realize input shaft and rear-guard
Axis is coaxially connected, it can be achieved that independent rear-guard.
Further technical solution is that the differential mechanism driven gear is fixed on planetary gear shaft by driven gear bolt
Frame, the rear axle assemblies further include rear axle bolt of cover, rear Simmer ring, rear axle snap ring, rear axle angular contact bearing and rear shaft end
Lid, the rear axle driven gear are limited by spline installation with rear axis connection and by the rear axle snap ring and rear axle axis rank, institute
Rear axle one end is stated by needle bearing and preceding axis connection, the other end passes through rear axle angular contact bearing and the fixed company of rear hubcap
It connects, the rear hubcap is fixedly connected on the cabinet by rear axle bolt of cover；The preceding shaft assembly further includes that front axle is close
Seal, front axle bolt of cover, preceding hubcap, front axle snap ring and front axle angular contact bearing, forerunner's gear are installed by spline
It is limited on front axle and through front axle snap ring and front shaft rank, described front axle one end is connected with the rear axle, before the other end passes through
Shaft angle contact bearing is fixedly connected with the preceding hubcap, and the preceding hubcap is fixedly connected on described by front axle bolt of cover
On cabinet.
Further technical solution is that the input shaft assembly further includes input shaft end cap, input shaft end bonnet bolt, input
Axle bearing and input Simmer ring, the input shaft gear are arranged on input shaft by spline, and one end of the input shaft is set
There is bearing of input shaft, the other end is fixedly connected on input by the first needle bearing and rear-guard axis connection, the bearing of input shaft
On hubcap, the input shaft end cap is fixedly connected by input shaft end bonnet bolt with the cabinet, in the input shaft end cap
Equipped with input Simmer ring.
Further technical solution is that the pull-fork assembly further includes shift fork axle rear enclosure, shift fork axle, shift fork axle protheca, is changed
Gear shifting block, shift fork head arm and shift fork head arm seat, the shift fork axle rear enclosure are threadedly coupled with the cabinet, and the shift fork axle protheca is logical
It crosses shift fork axle front side bolt to be fixed on cabinet, the both ends of the shift fork axle are respectively sleeved at the shift fork axle rear enclosure and shift fork
In axis protheca, the shift fork head arm seat is fixedly connected in the shift fork axle, the shift fork head arm and shift fork and the shift fork head
Arm seat is connected, and the gear shifting pulling head is mounted on cabinet and connect with the shift fork head arm, and stirring the gear shifting pulling head can drive
Axial movement of the shift fork axle along the shift fork axle rear enclosure and shift fork axle protheca.
In this way, stirring shift fork head arm when stirring gear shifting pulling head, drive shift fork axle along the shift fork axle rear enclosure and shift fork
Axis protheca is mobile, and then drives the shift fork mobile, and input shaft gear input shaft described in shift fork effect lower edge slides axially,
Input shaft gear can be realized in the different location of input shaft engaged with forerunner's gear, simultaneously with differential mechanism driven gear, Qian Quchi
Wheel engagement, engages with differential mechanism driven gear, engages with rear-guard shaft gear, realizes different location power transmission, is respectively completed list
Only forerunner, differential locking 4 wheel driven, differential 4 wheel driven and independent rear-guard operating mode.
Further technical solution is that the pull-fork assembly includes shift locking module, and the shift locking module is used for
The shift fork axle is limited to the predetermined position of the shift fork axle rear enclosure and shift fork axle protheca.In this way, guaranteeing that shift fork axle can be accurate
Stop at drive range and self-locking, realize the stopping of shift fork and the fixed position of input shaft gear and self-locking, it is described herein
The fixed position of input shaft gear be guarantee that input shaft gear engages its position on input shaft with forerunner's gear, while with difference
Its position on input shaft when fast device driven gear, the engagement of forerunner's gear, it is being inputted when engaging with differential mechanism driven gear
Position on axis, and its position on input shaft when being engaged with rear-guard shaft gear.
Further technical solution is, the shift locking module include from lock tube, and setting described from lock tube
Spring and self-locking steel ball, described from the open at one end of lock tube, the open end from lock tube is fixed with the shift fork axle protheca
It connects and is connected with the shift fork axle protheca, be equipped with the multiple and described self-locking steel ball by preset space length in the shift fork axle and match
The self-locking grooves of conjunction, the spring is by the self-locking steel ball compressing in the shift fork axle.When self-locking steel ball just falls into self-locking grooves
When, position and generate it is self-locking, when shift, when extraneous shift active force passes through self-locking grooves and the effect in the radial direction of self-locking steel ball
When power acts on the self-lock force of self-locking steel ball greater than spring, shift fork axle axial movement drives self-locking steel ball mobile to spring, spring
It is compressed, when shift fork axle continues axial movement, amount of spring compression release pushes self-locking steel ball to fall into next self-locking grooves, realization is changed
Gear.The entire shift process of the utility model, frictional resistance is small, and shift-feel is good.It is preferred that being set in the shift fork axle by preset space length
There are 4 self-locking grooves matched with the self-locking steel ball, with independent forerunner, differential locking 4 wheel driven, differential 4 wheel driven, independent rear-guard four
Kind gear matches.
It is preferred that described be equipped with caging bolt from lock tube, the spring is arranged on the caging bolt.
Further technical solution is that the rear-guard component further includes rear-guard axle bearing, rear-guard shaft end bonnet bolt, rear-guard axis
Sealing ring and rear-guard hubcap, the rear-guard axis are provided with rear-guard axle bearing, and the other end passes through the first needle bearing and input shaft
Connection, the rear-guard axle bearing are arranged on the rear-guard hubcap, the rear-guard hubcap by rear-guard shaft end bonnet bolt with
The cabinet is fixedly connected, and rear-guard Simmer ring is equipped in the rear-guard hubcap.
Further technical solution is that the precursor assemblies further include forerunner's end cap, forerunner shaft end bonnet bolt, forerunner's axis axis
It holds, forerunner's Simmer ring and forerunner's shaft retaining ring, forerunner's axis driven gear are arranged on forerunner's axis and pass through forerunner's shaft retaining ring
It is positioned with axis rank, the both ends of forerunner's axis are arranged on forerunner's end cap by forerunner's axle bearing, and forerunner's end cap is logical
It crosses forerunner shaft end bonnet bolt to be fixedly connected with the cabinet, forerunner's Simmer ring is equipped in forerunner's hubcap.
Further technical solution is that the box assembly further includes case lid, box body bolt, oil discharge screw, shift fork shaft-cup
Plate and cover plate bolt, the oil discharge screw are arranged on the cabinet, and the case lid and shift fork axle cover board pass through the case respectively
Body bolt and cover plate bolt are fixed on the cabinet.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the outline drawing of transfer case involved in a kind of embodiment of the utility model；
Fig. 2 is sectional view of the transfer case involved in Fig. 1 along the face H-H；
Fig. 3 is sectional view of the transfer case involved in Fig. 1 along the face J-J；
Fig. 4 is that the connection structure of input shaft assembly and rear-guard component involved in a kind of embodiment of the utility model is illustrated
Figure；
Fig. 5 is differential shaft assembly partial schematic diagram involved in a kind of embodiment of the utility model；
Fig. 6 is pull-fork assembly partial schematic diagram involved in a kind of embodiment of the utility model；
Fig. 7 is precursor assemblies partial schematic diagram involved in a kind of embodiment of the utility model；
Fig. 8 is the schematic diagram of the independent forerunner's state of transfer case involved in a kind of embodiment of the utility model；
Fig. 9 is the schematic diagram of transfer case differential locking 4 wheel driven state involved in a kind of embodiment of the utility model；
Figure 10 is the schematic diagram of transfer case differential 4 wheel driven state involved in a kind of embodiment of the utility model；
Figure 11 is the signal of the independent rear-guard state of differential four-wheel-drive transfer case involved in a kind of embodiment of the utility model
Figure.
In figure:
A box assembly B inputs shaft assembly C rear-guard component
D differential shaft assembly E precursor assemblies F pull-fork assembly
A1 case lid A2 box body bolt A3 cabinet
A4 oil discharge screw A5 shift fork axle cover board A6 cover plate bolt
B1 input shaft end cap B2 inputs Simmer ring B3 input shaft end bonnet bolt
B4 input shaft B5 bearing of input shaft B6 input shaft gear
C1 rear-guard shaft gear C2 rear-guard axle bearing C3 rear-guard shaft end bonnet bolt
C4 rear-guard axis C5 rear-guard Simmer ring the first needle bearing of C6
Shaft assembly before C7 rear-guard hubcap D1 rear axle assemblies D2
Hubcap after D3 differential assembly D11 rear axle gear D12
D13 rear axle bolt of cover D14 rear axle D15 rear axle snap ring
D16 rear axle angular contact bearing D17 rear axle differential gear D21 front axle
Hubcap D24 front axle angular contact bearing before D22 front axle bolt of cover D23
D25 front axle snap ring D26 the second needle bearing D27 front axle differential gear
31 planet wheel carrier D32 planetary gear shaft of D28 forerunner's gear D
D33 differential mechanism driven gear D34 driven gear bolt D35 planetary gear thrust axle sleeve
D36 planetary gear D37 planet wheel carrier axle sleeve D38 planetary gear axle sleeve
D39 thrust axle sleeve E1 forerunner's end cap E2 forerunner's axis
E3 forerunner shaft end bonnet bolt E4 forerunner's axle bearing E5 forerunner's Simmer ring
E6 forerunner's shaft retaining ring E7 forerunner's axis driven gear F1 shift fork axle rear enclosure
F2 shift fork axle F3 spring F4 is from lock tube
The self-locking steel ball F7 self-locking grooves of F5 caging bolt F6
F8 shift fork axle front side bolt F9 shift fork axle protheca F10 shift fork arm seat
F11 shift fork head arm F12 shift fork F13 gear shifting pulling head
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing, the description of this part be only it is exemplary and explanatory,
There should not be any restriction effect to the protection scope of the utility model.In addition, those skilled in the art's retouching according to this document
It states, the corresponding combination can be carried out to the feature in embodiment in this document and in different embodiments.
The utility model embodiment is as follows, referring to Fig.1~11, the four-wheel-drive transfer case of a kind of differential and differential locking, including
Box assembly A inputs shaft assembly B, rear-guard component C, differential shaft assembly D, precursor assemblies E and pull-fork assembly F, the box assembly
A includes at least cabinet A3, the input shaft assembly B, rear-guard component C, and differential shaft assembly D, precursor assemblies E and pull-fork assembly F are solid
It is scheduled on the cabinet A3, the input shaft that the input shaft assembly B includes at least input shaft B4 and is arranged on input shaft B4
Gear B 6, the input shaft B4 can drive the input shaft gear B6 to rotate, and the pull-fork assembly F includes at least shift fork F12, institute
It states shift fork F12 to be connected with the input shaft gear B6, the shift fork F12 can drive the input shaft gear B6 can be along the input
Axis B4's slides axially, forerunner's axis driven tooth that the precursor assemblies E includes at least forerunner's axis E2 and is arranged on forerunner's axis E2
E7, the rear-guard shaft gear C1 that the rear-guard component C includes at least rear-guard axis C4 and is arranged on the rear-guard axis C4 are taken turns, it is described
Rear-guard axis C4 is connected with input shaft B4 by the first needle bearing C6, and the input shaft gear B6 can be with the rear-guard shaft gear C1
Engagement；The differential shaft assembly D includes rear axle assemblies D1, preceding shaft assembly D2 and differential assembly D3, and the rear axle assemblies D1 is at least
Including rear axle D14, rear axle gear D11 and rear axle differential gear D17；The preceding shaft assembly D2 includes at least front axle D21, Qian Quchi
Take turns D28, front axle differential gear D27；The differential assembly D3 include at least differential mechanism driven gear D33, planetary gear shaft D32,
Planet wheel carrier D31, planetary gear thrust axle sleeve D35, planetary gear D36, planet wheel carrier axle sleeve D37, planetary gear
Axle sleeve D38 and thrust axle sleeve D39；The front axle D21 is connected with rear axle D14 by the second needle bearing D6, the differential mechanism from
Moving gear D33 is fixed on the planet wheel carrier D31, and the planet wheel carrier D31 passes through planet wheel carrier axle sleeve
D37 is mounted on the rear axle D14 and can rotate along rear axle D14, the rear axle differential gear D17 and rear axle gear D11 setting
On the rear axle D14, the rear axle gear D11 is located at the outside of the rear axle differential gear D17, the rear axle gear D11
It is engaged with the rear-guard gear, the front axle differential gear D27 and forerunner's gear D 28 are arranged on the front axle D21, before described
Drive the outside that gear D 28 is located at the front axle differential gear D27, forerunner's gear D 28 and forerunner's axis driven gear E7
Engagement, is respectively equipped with thrust between the planet wheel carrier D31 and the rear axle differential gear D17, front axle differential gear D27
Axle sleeve D39, the thrust axle sleeve D39 are respectively sleeved on the front axle D21 and rear axle D14, the planet wheel carrier D31,
Rear axle differential gear D17, front axle differential gear D27 are in contact with the thrust axle sleeve D39；On the planet wheel carrier D31
Equipped with multiple planetary gear shaft D32, the planetary gear shaft D32 is uniformly arranged along the circumferential direction of the differential mechanism driven gear D33
And limited by differential mechanism driven gear D33, the planetary gear D36 is arranged by the planetary gear axle sleeve D38 described
On planetary gear shaft D32, planetary gear thrust axle sleeve is equipped between the planet wheel carrier D31 and the planetary gear D36
D35, the planetary gear thrust axle sleeve D35 are set on the planetary gear shaft D32, the planet wheel carrier D31, planet
Gear D 36 is in contact with the planetary gear thrust axle sleeve D35；The two sides of the planetary gear D36 respectively with front axle differential tooth
Wheel D27 and rear axle differential gear D17 engages and forms differential transmission systems, and the input shaft gear B6 can be with differential mechanism driven tooth
It takes turns D33 and/or forerunner's gear D 28 engages.
It is preferred that planetary gear shaft D32 and planetary gear D36 circumferentially arrange that quantity is more than or equal to 2, it is less than or equal to 4.
During concrete application, external impetus is transferred to input shaft B4, is transferred to input shaft gear B6 by input shaft B4,
Shift fork F12 drives input shaft gear B6 to move along input shaft B4, realizes that input shaft gear B6 is engaged, simultaneously with forerunner's gear D 28
It is engaged with differential mechanism driven gear D33, forerunner's gear D 28, engages with differential mechanism driven gear D33, nibbled with rear-guard shaft gear C1
It closes, and then realizes different location power transmission.
As shown in figure 8, shift fork axle F2 is at leftmost side forerunner position, input shaft gear B6 is only engaged with forerunner's gear D 28,
Forerunner's gear D 28 imparts power to forerunner the axis driven gear E7, forerunner axis driven gear E7 engaged and drives forerunner's axis
E2 rotation, realizes forerunner, at this point, due to the unpowered transmission of planet wheel carrier D31, it is free to rotate, rear-guard cannot be exported
Power, system are in independent forerunner's state.
As shown in figure 9, shift fork axle F2 is at intermediate differential locking 4 wheel driven position, input shaft gear B6 and forerunner's gear D 28
It is engaged simultaneously with differential mechanism driven gear D33, forerunner's gear D 28 imparts power to the forerunner's axis driven gear engaged
E7, forerunner axis driven gear E7 drive forerunner's axis E2 rotation, realize that power is transferred to row by forerunner, differential mechanism driven gear D33
Star gear pedestal D31, is then passed to planetary gear shaft D32 and planetary gear D36, is transferred to rear axle by planetary gear D36
Differential gear D17 and rear axle D14, then the rear-guard shaft gear C1 engaged is passed to by rear axle gear D11, finally to rear-guard
Axis C4 realizes rear-guard；Since input shaft gear B6 is engaged simultaneously with forerunner's gear D 28 and differential mechanism driven gear D33, planet tooth
Axle stand D31 is identical with the revolving speed of forerunner's axis E2, front and back indifferential, is in differential locking 4 wheel driven state.
As shown in Figure 10, shift fork axle F2 is at intermediate differential 4 wheel driven position, input shaft gear B6 only with differential mechanism driven tooth
D33 engagement is taken turns, power is transferred to planet wheel carrier D31 by differential mechanism driven gear D33, and planet wheel carrier D31 is by power
It is transferred to planetary gear shaft D32 and planetary gear D36, front axle differential gear D27 is transferred to after by planetary gear D36 respectively
Axis differential gear D17, is then passed to front axle D21 and rear axle D14, then passes through forerunner's gear D 28 and rear axle gear D11 points respectively
Supplementary biography passs the forerunner's axis driven gear E7 engagement engaged and rear-guard shaft gear C1, finally to forerunner's axis E2 and rear-guard
Axis C4 realizes differential 4 wheel driven.
As shown in figure 11, the shift fork axle F2 at rightmost side rear-guard position, nibble with rear-guard shaft gear C1 by input shaft B4 tooth
Transmission is closed, power is transferred to by rear-guard axis C4 by rear-guard shaft gear C1, realizes that input shaft B4 and rear-guard axis C4 is coaxially connected, it is real
Now independent rear-guard.
The utility model performance is stablized, safe and reliable, compact-sized, it can be achieved that the haulage vehicle of installing the utility model exists
It is lightly loaded good road surface rear wheel drive when driving, using front-wheel drive when being lightly loaded non-rigid road traveling, in fully loaded good road surface row
Differential 4 wheel driven is needed when sailing, and differential locking 4 wheel driven is needed when being fully loaded with non-rigid road surface, can get good driving capability and drop
Underneath drive loss, effectively improves the consumption of drive system internal power stream.
On the basis of above-described embodiment, in another embodiment of the utility model, as Figure 11, the rear-guard shaft gear C1 are equipped with
Internal tooth and external tooth, the rear-guard shaft gear C1 can pass through internal tooth and the input shaft gear B6 internal messing, the rear-guard shaft gear
C1 passes through external tooth and the rear axle gear D11 external toothing.In this way, shift fork axle F2 is at rightmost side rear-guard position, input shaft gear
B6 and rear-guard axis C4 is driven by inside engaged gear, realizes that input shaft B4 and rear-guard axis C4 are coaxially connected, it can be achieved that independent rear-guard.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 5, the differential mechanism driven gear D33
Be fixed on planet wheel carrier D31 by driven gear bolt D34, the rear axle assemblies D1 further include rear axle bolt of cover 13,
Rear axle D14 sealing ring, rear axle snap ring D15, rear axle angular contact bearing D16 and rear hubcap D12, the rear axle D14 driven gear
The rear axle snap ring D15 is connect and passed through with rear axle D14 by spline installation and rear axle D14 axis rank limits, the rear axle D14 mono-
End is connect by needle bearing with front axle D21, and the other end is fixed by rear axle angular contact bearing D16 and the rear hubcap D12
Connection, the rear hubcap D12 are fixedly connected on the cabinet A3 by rear axle bolt of cover 13；The preceding shaft assembly D2 is also
Including front axle D21 sealing ring, front axle snap ring D25, front axle bolt of cover D22, preceding hubcap D23 and front axle angular contact bearing D24,
Forerunner's gear D 28 is mounted on front axle D21 by spline, and is limited by front axle snap ring D25 and front shaft rank, before described
The one end axis D21 is connected with the rear axle D14, and the other end passes through front axle angular contact bearing D24 and the fixed company of the preceding hubcap D23
It connects, the preceding hubcap D23 is fixedly connected on the cabinet A3 by front axle bolt of cover D22.
On the basis of above-described embodiment, in another embodiment of the utility model, as Fig. 4, the input shaft assembly B further include
Input shaft end cap B1, input shaft end bonnet bolt B3, bearing of input shaft B5 and input Simmer ring B2, the input shaft gear B6 are logical
It crosses spline to be arranged on input shaft B4, one end of the input shaft B4 is equipped with bearing of input shaft B5, and the other end passes through the first needle roller
Bearing C6 is connect with rear-guard axis C4, and the bearing of input shaft B5 is fixedly connected on input shaft end cap B1, the input shaft end cap
B1 is fixedly connected by input shaft end bonnet bolt B3 with the cabinet A3, and input Simmer ring is equipped in the input shaft end cap B1
B2。
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 1 and Fig. 6, the pull-fork assembly F is also
Including shift fork axle rear enclosure F1, shift fork axle F2, shift fork axle protheca F9, gear shifting pulling head F13, shift fork head arm F11 and shift fork head arm seat
F10, the shift fork axle rear enclosure F1 are threadedly coupled with the cabinet A3, and the shift fork axle protheca F9 passes through shift fork axle front side bolt F8
It is fixed on cabinet A3, the both ends of the shift fork axle F2 are respectively sleeved at the shift fork axle rear enclosure F1 and shift fork axle protheca F9
Interior, the shift fork head arm seat F10 is fixedly connected on the shift fork axle F2, the shift fork head arm F11 and shift fork F12 with described group
Plug arm seat F10 is connected, and the gear shifting pulling head F13 is mounted on cabinet A3 and connect with the shift fork head arm F11, stirs described
Gear shifting pulling head F13 can drive the shift fork axle F2 along the axial movement of the shift fork axle rear enclosure F1 and shift fork axle protheca F9.
In this way, stirring shift fork head arm F11 when stirring gear shifting pulling head F13, drive shift fork axle F2 after the shift fork axle
It is mobile to cover F1 and shift fork axle protheca F9, and then drives the shift fork F12 mobile, input shaft gear B6 acts on lower edge in shift fork F12
The input shaft B4's slides axially, and input shaft gear B6 can be realized in the different location of input shaft B4 and be nibbled with forerunner's gear D 28
It closes, engage simultaneously with differential mechanism driven gear D33, forerunner's gear D 28, engaged with differential mechanism driven gear D33, and rear-guard axis tooth
Take turns C1 engagement, realize different location power transmission, be respectively completed independent forerunner, differential locking 4 wheel driven, differential 4 wheel driven and individually after
The operating mode of drive.
On the basis of above-described embodiment, in another embodiment of the utility model, if Fig. 6, the pull-fork assembly F include shift
Locking module, the shift locking module are used to the shift fork axle F2 being limited to the shift fork axle rear enclosure F1 and shift fork axle protheca
The predetermined position of F9.In this way, guarantee that shift fork axle F2 can accurately stop at drive range and self-locking, shift fork F12 and defeated is realized
Enter the stopping of the fixed position shaft gear B6 and self-locking, the fixed position input shaft gear B6 described herein is to guarantee input shaft tooth
Wheel B6 engages its position on input shaft B4 with forerunner's gear D 28, at the same with differential mechanism driven gear D33, forerunner's gear D 28
Its position on input shaft B4 when engagement, its position on input shaft B4 when being engaged with differential mechanism driven gear D33, and
Its position on input shaft B4 when being engaged with rear-guard shaft gear C1.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 6, the shift locking module includes
From lock tube F4, and the spring F3 from lock tube F4 and self-locking steel ball F6 is set, it is described from the open at one end of lock tube F4,
The open end from lock tube F4 is fixedly connected with the shift fork axle protheca F9 and is connected with the shift fork axle protheca F9, described
Being equipped with multiple self-locking grooves F7, the spring F3 matched with the self-locking steel ball F6 by preset space length on shift fork axle F2 will be described
Self-locking steel ball F6 compressing is on the shift fork axle F2.When self-locking steel ball F6 just falls into self-locking grooves F7, position and generate it is self-locking,
When shift, when extraneous shift active force is made by self-locking grooves F7 and self-locking steel ball F6 active force in the radial direction greater than spring F3
When used in the self-lock force of self-locking steel ball F6, shift fork axle F2 axial movement drives self-locking steel ball F6 mobile to spring F3, spring F3 quilt
Compression, when shift fork axle F2 continues axial movement, the release of spring F3 decrement pushes self-locking steel ball F6 to fall into next self-locking grooves F7,
Realize shift.The entire shift process of the utility model, frictional resistance is small, and shift-feel is good.It is preferred that by pre- on the shift fork axle F2
Fixed spacing is equipped with 4 self-locking grooves F7 matched with the self-locking steel ball F6, with independent forerunner, differential locking 4 wheel driven, differential four
It drives, four kinds of gears of independent rear-guard match.
It is described that limit is equipped with from lock tube F4 such as Fig. 6 in another embodiment of the utility model on the basis of above-described embodiment
Position bolt F5, the spring F3 are arranged on the caging bolt F5.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 4, after the rear-guard component C further includes
Axle bearing C2, rear-guard shaft end bonnet bolt C3, rear-guard Simmer ring C5 and rear-guard hubcap C7 are driven, after the rear-guard axis C4 is provided with
Axle bearing C2 is driven, the other end is connect by the first needle bearing C6 with input shaft B4, and the rear-guard axle bearing C2 is arranged described
On rear-guard hubcap C7, the rear-guard hubcap C7 is fixedly connected by rear-guard shaft end bonnet bolt C3 with the cabinet A3, described
Rear-guard Simmer ring C5 is equipped in rear-guard hubcap C7.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 7, before the precursor assemblies E further includes
Drive end cap E1, forerunner shaft end bonnet bolt E3, forerunner's axle bearing E4, forerunner's Simmer ring E5 and forerunner's shaft retaining ring E6, the forerunner
Axis driven gear E7 is arranged on forerunner's axis E2 and is positioned by forerunner's shaft retaining ring E6 and axis rank, and the both ends of forerunner's axis E2 are logical
Cross forerunner's axle bearing E4 be arranged on forerunner's end cap E1, forerunner's end cap E1 by forerunner shaft end bonnet bolt E3 with it is described
Cabinet A3 is fixedly connected, and forerunner's Simmer ring E5 is equipped in forerunner's axis E2 end cap.
On the basis of above-described embodiment, in another embodiment of the utility model, such as Fig. 1~3, the box assembly A is also wrapped
Case lid A1, box body bolt A2, oil discharge screw A4, shift fork axle cover board A5 and cover plate bolt A6, the oil discharge screw A4 setting is included to exist
On the cabinet A3, the case lid A1 and shift fork axle cover board A5 are fixed on by the box body bolt A2 and cover plate bolt A6 respectively
On the cabinet A3.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (10)
1. the four-wheel-drive transfer case of a kind of differential and differential locking, which is characterized in that including box assembly, input shaft assembly, rear-guard
Component, differential shaft assembly, precursor assemblies and pull-fork assembly, the box assembly include at least cabinet, the input shaft assembly, after
Component is driven, differential shaft assembly, precursor assemblies and pull-fork assembly are fixed on the cabinet, and the input shaft assembly includes at least defeated
The input shaft gear for entering axis and being arranged on input shaft, the input shaft can drive the input shaft gear to rotate, and described group
It pitches component and includes at least shift fork, the shift fork is connected with the input shaft gear, and the shift fork can drive the input shaft gear
Can sliding axially along the input shaft, the precursor assemblies include at least forerunner's axis and forerunner's axis for being arranged on forerunner's axis from
Moving gear, the rear-guard shaft gear that the rear-guard component includes at least rear-guard axis and is arranged on the rear-guard axis, the rear-guard
Axis is connected with input shaft by the first needle bearing, and the input shaft gear can be engaged with the rear-guard shaft gear；The differential
Shaft assembly includes rear axle assemblies, preceding shaft assembly and differential assembly, and the rear axle assemblies include at least rear axle, rear axle gear and rear axle
Differential gear；The preceding shaft assembly includes at least front axle, forerunner's gear, front axle differential gear；The differential assembly includes at least
Differential mechanism driven gear, planetary gear shaft, planet wheel carrier, planetary gear thrust axle sleeve, planetary gear, planet wheel carrier
Axle sleeve, planetary gear axle sleeve and thrust axle sleeve；The front axle is connected with rear axle by the second needle bearing, and the differential mechanism is driven
Gear is fixed on the planet wheel carrier, the planet wheel carrier by planet wheel carrier axle sleeve be mounted on it is described after
It can rotate on axis and along rear axle, the rear axle differential gear and rear axle gear are arranged on the rear axle, the rear axle gear position
In the outside of the rear axle differential gear, the rear axle gear is engaged with the rear-guard gear, and the front axle differential gear is with before
Gear is driven to be arranged on the front axle, forerunner's gear is located at the outside of the front axle differential gear, forerunner's gear and
Forerunner's axis driven gear engagement, divides between the planet wheel carrier and the rear axle differential gear, front axle differential gear
Not She You thrust axle sleeve, the thrust axle sleeve is respectively sleeved on the front axle and rear axle, and the planet wheel carrier, rear axle are poor
Fast gear, front axle differential gear are in contact with the thrust axle sleeve；The planet wheel carrier is equipped with multiple planetary gear shafts,
The planetary gear shaft is uniformly arranged along the circumferential direction of the differential mechanism driven gear and passes through differential mechanism driven gear and limits, described
Planetary gear is set in the planetary gear shaft by the planetary gear shaft, the planet wheel carrier and the planet
Planetary gear thrust axle sleeve is equipped between gear, the planetary gear thrust axle sleeve is set in the planetary gear shaft, described
Planet wheel carrier, planetary gear are in contact with the planetary gear thrust axle sleeve；The planetary gear two sides respectively with it is preceding
Axis differential gear and rear axle differential gear engage and form differential transmission systems, and the input shaft gear can be with differential mechanism driven tooth
Wheel and/or the engagement of forerunner's gear.
2. the four-wheel-drive transfer case of differential according to claim 1 and differential locking, which is characterized in that the rear-guard shaft gear
Equipped with internal tooth and external tooth, the rear-guard shaft gear can pass through internal tooth and the input shaft gear internal messing, the rear-guard shaft gear
Pass through external tooth and the rear axle gear external toothing.
3. the four-wheel-drive transfer case of differential according to claim 1 and differential locking, which is characterized in that the differential mechanism is driven
Gear is fixed on planet wheel carrier by driven gear bolt, and the rear axle assemblies further include that rear axle bolt of cover, rear axle are close
Seal, rear axle snap ring, rear axle angular contact bearing and rear hubcap, the rear axle driven gear pass through spline installation and rear axis connection
And limited by the rear axle snap ring and rear axle axis rank, by needle bearing and preceding axis connection, the other end is logical for described rear axle one end
Later shaft angle contact bearing is fixedly connected with the rear hubcap, and the rear hubcap is fixedly connected on by rear axle bolt of cover
On the cabinet；The preceding shaft assembly further includes preceding Simmer ring, front axle bolt of cover, preceding hubcap, front axle snap ring and front axle
Angular contact bearing, forerunner's gear is mounted on front axle by spline and is limited by front axle snap ring and front shaft rank, described
Front axle one end is connected with the rear axle, and the other end is fixedly connected by front axle angular contact bearing with the preceding hubcap, before described
Hubcap is fixedly connected on the cabinet by front axle bolt of cover.
4. the four-wheel-drive transfer case of differential according to claim 3 and differential locking, which is characterized in that the input shaft assembly
It further include that input shaft end cap, input shaft end bonnet bolt, bearing of input shaft and input Simmer ring, the input shaft gear pass through flower
Key is arranged on input shaft, and one end of the input shaft is equipped with bearing of input shaft, and the other end passes through the first needle bearing and rear-guard
Axis connection, the bearing of input shaft are fixedly connected on input shaft end and cover, and the input shaft end cap passes through input shaft end bonnet bolt
It is fixedly connected with the cabinet, input Simmer ring is equipped in the input shaft end cap.
5. the four-wheel-drive transfer case of differential and differential locking described in any one according to claim 1~4, which is characterized in that institute
Stating pull-fork assembly further includes shift fork axle rear enclosure, shift fork axle, shift fork axle protheca, gear shifting pulling head, shift fork head arm and shift fork head arm seat, institute
It states shift fork axle rear enclosure to be threadedly coupled with the cabinet, the shift fork axle protheca is fixed on by shift fork axle front side bolt in cabinet
On, the both ends of the shift fork axle are respectively sleeved in the shift fork axle rear enclosure and shift fork axle protheca, and the shift fork head arm seat is fixed
It is connected in the shift fork axle, the shift fork head arm and shift fork are connected with the shift fork head arm seat, and the gear shifting pulling head is mounted on
Connect on cabinet and with the shift fork head arm, stir the gear shifting pulling head shift fork axle can be driven along the shift fork axle rear enclosure and
The axial movement of shift fork axle protheca.
6. the four-wheel-drive transfer case of differential according to claim 5 and differential locking, which is characterized in that the pull-fork assembly packet
Shift locking module is included, the shift locking module is for before being limited to the shift fork axle rear enclosure and shift fork axle for the shift fork axle
The predetermined position of set.
7. the four-wheel-drive transfer case of differential according to claim 6 and differential locking, which is characterized in that the shift locking mould
Block includes and the spring from lock tube and self-locking steel ball being arranged in from lock tube, described from the open at one end of lock tube, described
It is fixedly connected from the open end of lock tube with the shift fork axle protheca and is connected with the shift fork axle protheca, pressed in the shift fork axle
Preset space length is equipped with multiple self-locking grooves matched with the self-locking steel ball, and the spring is by the self-locking steel ball compressing described
In shift fork axle.
8. the four-wheel-drive transfer case of differential according to claim 5 and differential locking, which is characterized in that the rear-guard component is also
Including rear-guard axle bearing, rear-guard shaft end bonnet bolt, rear-guard Simmer ring and rear-guard hubcap, the rear-guard axis is provided with rear-guard axis
Bearing, the other end are arranged on the rear-guard hubcap by the first needle bearing and input axis connection, the rear-guard axle bearing,
The rear-guard hubcap is fixedly connected by rear-guard shaft end bonnet bolt with the cabinet, and rear-guard axis is equipped in the rear-guard hubcap
Sealing ring.
9. the four-wheel-drive transfer case of differential according to claim 8 and differential locking, which is characterized in that the precursor assemblies are also
Including forerunner's end cap, forerunner shaft end bonnet bolt, forerunner's axle bearing, forerunner's Simmer ring and forerunner's shaft retaining ring, forerunner's axis from
Moving gear is arranged on forerunner's axis and is positioned by forerunner's shaft retaining ring and axis rank, and the both ends of forerunner's axis pass through forerunner's axle bearing
It is arranged on forerunner's end cap, forerunner's end cap is fixedly connected by forerunner shaft end bonnet bolt with the cabinet, before described
It drives and is equipped with forerunner's Simmer ring in hubcap.
10. the four-wheel-drive transfer case of differential according to claim 9 and differential locking, which is characterized in that the box assembly
It further include case lid, box body bolt, oil discharge screw, shift fork axle cover board and cover plate bolt, the oil discharge screw is arranged in the cabinet
On, the case lid and shift fork axle cover board are fixed on the cabinet by the box body bolt and cover plate bolt respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754850.4U CN208474480U (en) | 2018-05-18 | 2018-05-18 | A kind of four-wheel-drive transfer case of differential and differential locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820754850.4U CN208474480U (en) | 2018-05-18 | 2018-05-18 | A kind of four-wheel-drive transfer case of differential and differential locking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208474480U true CN208474480U (en) | 2019-02-05 |
Family
ID=65217964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820754850.4U Withdrawn - After Issue CN208474480U (en) | 2018-05-18 | 2018-05-18 | A kind of four-wheel-drive transfer case of differential and differential locking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208474480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443495A (en) * | 2018-05-18 | 2018-08-24 | 湖南农业大学 | A kind of four-wheel-drive transfer case of differential and differential locking |
-
2018
- 2018-05-18 CN CN201820754850.4U patent/CN208474480U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443495A (en) * | 2018-05-18 | 2018-08-24 | 湖南农业大学 | A kind of four-wheel-drive transfer case of differential and differential locking |
| CN108443495B (en) * | 2018-05-18 | 2024-04-05 | 湖南农业大学 | Differential and differential locking four-wheel drive transfer case |
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