CN109532335A - A kind of automobile rear driving axle assembly - Google Patents
A kind of automobile rear driving axle assembly Download PDFInfo
- Publication number
- CN109532335A CN109532335A CN201710860844.7A CN201710860844A CN109532335A CN 109532335 A CN109532335 A CN 109532335A CN 201710860844 A CN201710860844 A CN 201710860844A CN 109532335 A CN109532335 A CN 109532335A
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- Prior art keywords
- differential
- guard
- tooth
- axle
- assembly
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- 239000000428 dust Substances 0.000 claims description 19
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- 241001083492 Trapa Species 0.000 claims 1
- 235000014364 Trapa natans Nutrition 0.000 claims 1
- 235000009165 saligot Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 239000002184 metal Substances 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000003032 molecular docking Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/121—Power-transmission from drive shaft to hub
- B60B35/122—Power-transmission from drive shaft to hub using gearings
- B60B35/125—Power-transmission from drive shaft to hub using gearings of the planetary type
-
- 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
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
-
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/30—Increase in
- B60B2900/321—Lifetime
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Retarders (AREA)
Abstract
The present invention discloses a kind of automobile rear driving axle assembly, including rear-guard axle case assy, semiaxis and including connecting flange, bevel housing, the main tooth being set in final drive casing body, by tooth, the main gearbox assembly of differential assembly, connecting flange is fixed with main tooth, by tooth and main tooth engagement, differential assembly includes differential casing, axle shaft gear and four planetary gears, each planetary gear engages connection with two axle shaft gears respectively, semiaxis outer end is detachably fixed after being each passed through the left and right end portions of rear-guard axle case assy with tire, it is detachably fixed by tooth and differential casing, connecting flange and main tooth position are at rear-guard axle housing overcentre position, it is located in the middle part of rear-guard axle housing by tooth and differential assembly.A kind of automobile rear driving axle assembly structure of the invention is simple, uttering long and high-pitched sounds in vehicle traveling process is effectively reduced, and effectively improves planetary gear service life, and torque transmitting is steady, avoids generating resonance, effectively improves vehicle NVH performance and riding comfort.
Description
Technical field
The present invention relates to a kind of automobile rear-guards, more particularly to a kind of automobile rear driving axle assembly.
Background technique
It include main gearbox assembly in existing automobile rear driving axle assembly, and existing main gearbox assembly is by driving
Axle shaft gear is connect with two planetary gears respectively inside differential casing in differential assembly in dynamic device, in this way in semiaxis
Each planetary gear stress is bigger in rotary course, and rapidly translating rotation is the rotation at a slow speed of semiaxis by main tooth, reduces rotation
Rotary speed, torque increases during secondary, and changes torque direction, and planetary gear transmits torque not during changing torque
Steadily, so that two semiaxis being attached thereto shake and shake, generation utter long and high-pitched sounds and resonate, reduce vehicle NVH performance and
Riding comfort.And the assembly technology pore size opened up on differential casing is bigger, reduces the strong of differential casing
Degree and rigidity, reduce the impact resistant capability of differential casing, reduce the integral strength of whole rear bridge driven and and after shortening
The service life of bridge driving.In addition the main differential bearing that subtracts of traditional independence is using adjustment gasket adjustment, the flank after installation
Gap adjustment is difficult and difficult to control, assembles for the first time unqualified, needs the gasket for reselecting different-thickness and dismounts again, pacifies
Fill inefficiency, and backlash adjust it is improper will lead to main tooth and deviation generated by the position of engagement of tooth, and in garage
It generates and utters long and high-pitched sounds during sailing.
And existing Rear axle reinforcement plate is relatively more, caliber change is not gentle, and weld seam is relatively more, welding quality unstable, holds
It easily leads to stress concentration and axle housing mode is low.
Summary of the invention
The present invention is completed to solve in the prior art insufficient, and the object of the present invention is to provide a kind of structure letters
List can be effectively reduced uttering long and high-pitched sounds in vehicle traveling process, and effectively improve planetary gear service life, and torque transmitting is flat
Surely, it avoids generating resonance, effectively improves the automobile rear driving axle assembly of vehicle NVH performance and riding comfort.
A kind of automobile rear driving axle assembly of the invention, including rear-guard axle case assy and it is set to axle case assy center
Main gearbox assembly at position, the main gearbox assembly include connecting flange, bevel housing, are set to the master and subtract
The intracorporal main tooth of fast device shell by tooth, differential assembly and is respectively rotatably connected in differential assembly left and right sides portion
The semiaxis, the connecting flange are fixed with the main tooth, and the main tooth is angular wheel, described by tooth and the main tooth engagement
Fixed, the main tooth is mutually perpendicular to described by the central axis of tooth, and the differential assembly includes differential casing, is located at institute
State the axle shaft gear in left and right ends portion and four planetary gears between two axle shaft gears, institute in differential carrier body
It is vertical with two axle shaft gears to state planetary gear, each planetary gear is nibbled with two axle shaft gear one sides respectively
Connection is closed, each planetary gear is rotatably disposed in the differential carrier body, another side difference of axle shaft gear
It is detachably fixed connection with the corresponding semiaxis, the semiaxis outer end is each passed through the left and right end of the rear-guard axle case assy
It is detachably fixed behind portion with corresponding tire, described to be detachably fixed by tooth and the differential carrier outer rim, the connection
Flange and the main tooth position are described to be located at by tooth and the differential assembly at the rear-guard axle case assy overcentre position
In the middle part of the rear-guard axle case assy.
A kind of automobile rear driving axle assembly of the invention may also is that
The rear-guard axle case assy includes two rear-guard upper casings, rear-guard lower casing and rear-guard rear cover, the rear-guard upper casing and institute
It states the docking of rear-guard lower casing to fix, the rear-guard upper casing and rear-guard lower casing center offer mounting hole, the rear-guard rear cover
It is fixed with the mounting hole of the rear-guard upper casing and the rear-guard lower casing, the position of the rear-guard rear cover and the differential assembly
Position is corresponding.
Rear-guard rear cover cross section is diamond shape.
Radial ribs are provided on the outer wall of the bevel housing lower part.
Four planetary gear uniform rings are set in the differential carrier body, the interval between the adjacent planetary gear
Angle is 90 °.
It is located at setting at the adjacent planetary gear interval location on the differential casing and offers installing technological hole,
Four installing technological holes are equipped on the differential casing, the installing technological hole uniform ring is set to the differential casing
On.
Each semiaxis inner end is arranged with differential bearing, and the semiaxis is rotatably connected in the differential bearing,
Differential bearing inner end is fixed with the left and right ends portion of the differential casing respectively, and the outer end of the differential bearing is set
It is equipped with adjusting nut, the adjusting nut is detachably fixed with the bevel housing position adjustable.
Bearing cap is provided on the differential bearing, the bearing cap is fixedly connected with the differential bearing, the adjustment
Nut is removably fixed between the bevel housing and the bearing cap.
Bevel housing left and right ends portion is detachably fixed with rear axle assy shell by pivot flange, described
The medial surface of pivot flange with differential shell left and right ends seal fix, the lateral surface of the pivot flange and it is described after
Axle assembly shell is fixed.
Be provided with oil sealing and dust cover between the pivot flange and differential shell outer end, the oil sealing with it is described
Dust cover is sheathed on the semiaxis, and the oil sealing medial surface offsets with the adjusting nut, the lateral surface of the oil sealing with
The dust cover medial surface sealing offsets, and the dust cover lateral surface offsets with pivot flange sealing, outside the oil sealing
The left and right ends portion inner wall of wall and the differential casing is detachably fixed.
A kind of automobile rear driving axle assembly of the invention, including rear-guard axle case assy and it is set to axle case assy center
Main gearbox assembly at position, the main gearbox assembly include connecting flange, bevel housing, are set to the master and subtract
The intracorporal main tooth of fast device shell by tooth, differential assembly and is respectively rotatably connected in differential assembly left and right sides portion
The semiaxis, the connecting flange are fixed with the main tooth, and the main tooth is angular wheel, described by tooth and the main tooth engagement
Fixed, the main tooth is mutually perpendicular to described by the central axis of tooth, and the differential assembly includes differential casing, is located at institute
State the axle shaft gear in left and right ends portion and four planetary gears between two axle shaft gears, institute in differential carrier body
It is vertical with two axle shaft gears to state planetary gear, each planetary gear is nibbled with two axle shaft gear one sides respectively
Connection is closed, each planetary gear is rotatably disposed in the differential carrier body, another side difference of axle shaft gear
It is detachably fixed connection with the corresponding semiaxis, the semiaxis outer end is each passed through the left and right end of the rear-guard axle case assy
It is detachably fixed behind portion with corresponding tire, described to be detachably fixed by tooth and the differential carrier outer rim, the connection
Flange and the main tooth position are described to be located at by tooth and the differential assembly at the rear-guard axle case assy overcentre position
In the middle part of the rear-guard axle case assy.In this way, driving device is drivingly connected flange rotary, the connecting flange rotation drives solid therewith
The fixed main tooth spiral turns, and the main tooth spiral turns that the described of engagement normal thereto is driven to be turned by tooth spiral, since main tooth is conical tooth
Wheel, and the main tooth is mutually perpendicular to by tooth central axis, therefore torque direction changes, while speed being reduced, it will rapidly
Translating rotation is to rotate at a slow speed, is driving whole differential casing to rotate by tooth low speed rotation, so drive be set to it is described
Two axle shaft gears in differential carrier body rotate at a slow speed, due to being at this time that normally travel is kept straight on, four planets
There is no relative rotary motion between gear and the axle shaft gear, four planetary gears follow the differential casing together
It rotating at a slow speed, the semiaxis being detachably fixed with the axle shaft gear also rotates at a slow speed, and two semiaxis rotation speeds are identical, into
And two tires in left and right is driven to travel at the same speed.When automobile needs to turn, then controller controls four planetary gears and starts
It is rotated relative to the differential casing, and then drives the axle shaft gear of left and right two being meshed therewith at different rates
Rotation, and then the semiaxis of left and right ends is driven to rotate at different rates, so that the tire running speed of left and right ends is not
Together, when for example automobile turns to the left, the semiaxis rotation speed for controlling left side is lower than the rotation speed of right axle, realizes vapour
Tire steering angle is small on the left of vehicle, and car right side tire running revolving speed is high, and realization is turned to the left.For example automobile to the right turns to
When, the semiaxis rotation speed for controlling left side is higher than the rotation speed of right axle, realize that automobile left side tire turning velocity is big,
And car right side tire running revolving speed is small, realization bends to right.And semiaxis outboard end be pierced by after the rear-guard axle case assy with
Tire is fixed, and main gearbox assembly is supported and facilitates its operation by rear-guard axle case assy.No matter keeping straight on or turning in this way
The planetary gear stress, which is averaged, in curved process, when transmitting torque distributes to four planetary gears, each row
Star strength of gear is smaller, under equal conditions can be using the planetary gear that intensity is low, size is small, and extends institute
It is more uniform during power and torque are transmitted to state planetary gear service life, the axle shaft gear and the planetary gear
With it is steady, avoid semiaxis from occurring shaking in rotary course and rotating deviation and then generate resonance, simultaneously because differential casing
It is steady compared with power transmitting between semiaxis, therefore a part can be eliminated and uttered long and high-pitched sounds, the NVH performance of vehicle is effectively increased and improved
Riding comfort.A kind of automobile rear driving axle assembly of the invention, compared with the existing technology the advantages of be: structure is simple, can be with
Uttering long and high-pitched sounds in vehicle traveling process is effectively reduced, and effectively improves planetary gear service life, torque transmitting is steady, avoids
Resonance is generated, vehicle NVH performance and riding comfort are effectively improved.
Detailed description of the invention
A kind of automobile rear driving axle assembly outside schematic diagram of Fig. 1 present invention.
A kind of automobile rear driving axle assembly rear-guard axle case assy schematic internal view of Fig. 2 present invention.
A kind of automobile rear driving axle assembly main gearbox assembly schematic internal view of Fig. 3 present invention.
A kind of automobile rear driving axle assembly differential casing schematic diagram of Fig. 4 present invention.
A kind of automobile rear driving axle assembly differential assembly schematic diagram of internal structure of Fig. 5 present invention.
A kind of Fig. 6 automobile rear driving axle assembly bevel housing of present invention lower half portion view.
A kind of automobile rear driving axle assembly main gearbox assembly partial schematic diagram of Fig. 7 present invention.
A kind of automobile rear driving axle assembly of Fig. 8 present invention is in automobile accelerated order noise curve figure.
A kind of automobile rear driving axle assembly of Fig. 9 present invention slides order noise curve figure in automobile belt shelves.
A kind of automobile rear driving axle assembly of Figure 10 present invention is in car deceleration order noise curve figure.Figure number explanation
1 ... bevel housing 2 ... connecting flange 3 ... is by tooth
4 ... semiaxis 5 ... axle shaft gear 6 ... planetary gears
7 ... installing technological hole 8 ... differential bearing 9 ... adjusting nuts
10 ... differential mechanism left shell half 11 ... differential mechanism right half-shell 12 ... bearing caps
13 ... oil sealing 14 ... dust cover 15 ... pivot flanges
16 ... main main ratch portion 18 ... the spacer cylinders of tooth teeth portion 17 ...
19 ... main main tooth lower bearing 21 ... the rear-guard upper casings of tooth upper bearing (metal) 20 ...
22 ... rear-guard lower casing 23 ... rear-guard rear cover 24 ... radial ribs
25 ... bolt 26 ... planetary gear shaft 27 ... differential assemblies
Specific embodiment
The related each figure of Fig. 1 to Figure 10 with reference to the accompanying drawing makees a kind of automobile rear driving axle assembly of the invention further
It is described in detail.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, including rear
It drives axle case assy and is set to the main gearbox assembly of the axle case assy central position, the main gearbox assembly includes connecting
Acting flange 2, bevel housing 1, the main tooth being set in the bevel housing 1, by tooth 3, differential assembly 27 and point
It not being rotatably connected in the semiaxis 4 in 27 left and right sides portion of differential assembly, the connecting flange 2 is fixed with the main tooth,
The main tooth is angular wheel, described to be fixed by tooth 3 and the main tooth engagement, the main tooth and the central axis by tooth 3
Be mutually perpendicular to, the differential assembly 27 include differential casing, in the differential carrier body left and right ends portion semiaxis
Gear 5 and four planetary gears 6 between two axle shaft gears 5, the planetary gear 6 with two semiaxis
Gear 5 is vertical, and each planetary gear 6 engages connection, each planetary gear with two 5 one sides of axle shaft gear respectively
6 are rotatably disposed in the differential carrier body, and another side of the axle shaft gear 5 is removable with the corresponding semiaxis 4 respectively
It unloads and is fixedly connected, 4 outer end of semiaxis can with corresponding tire after being each passed through the left and right end portions of the rear-guard axle case assy
Disassembly is fixed, described to be detachably fixed by tooth 3 and the differential carrier outer rim, the connecting flange 2 and the main tooth position
It is described that the rear-guard axle housing is located at by tooth 3 and the differential assembly 27 at the rear-guard axle case assy overcentre position
In the middle part of assembly.It is rotated in this way, driving device is drivingly connected flange 2, the rotation of connecting flange 2 drives the master fixed thereto
Tooth spiral turns, and the main tooth spiral turns that the described of engagement normal thereto is driven to be rotated by tooth 3, since main tooth is angular wheel, Er Qiesuo
It states main tooth to be mutually perpendicular to by 3 central axis of tooth, therefore torque direction changes, while speed being reduced, it will rapidly translating rotation
To rotate at a slow speed, whole differential casing is being driven to rotate by 3 low speed rotation of tooth, and then drive and be set to the differential carrier
Intracorporal two axle shaft gears 5 rotate at a slow speed, due to being at this time that normally travel is kept straight on, four planetary gears 6 with
There is no relative rotary motion between the axle shaft gear 5, four planetary gears 6 follow the differential casing together at a slow speed
Rotation, the semiaxis 4 being detachably fixed with the axle shaft gear 5 also rotate at a slow speed, and two 4 rotation speeds of semiaxis are identical, into
And two tires in left and right is driven to travel at the same speed.When automobile needs to turn, then controller controls four planetary gears 6 and starts
It is rotated relative to the differential casing, and then drives the axle shaft gear 5 of left and right two being meshed therewith with different speed
Degree rotation, and then the semiaxis 4 of left and right ends is driven to rotate at different rates, so that the tire running speed of left and right ends
Difference, for example when automobile turns to the left, 4 rotation speed of semiaxis for controlling left side is lower than the rotation speed of right axle 4, real
Existing automobile left side tire steering angle is small, and car right side tire running revolving speed is high, and realization is turned to the left.For example automobile is turned right
To when, control left side 4 rotation speed of semiaxis be higher than right axle 4 rotation speed, realize automobile left side tire turn to
Speed is big, and car right side tire running revolving speed is small, and realization bends to right.And 4 outboard end of semiaxis is pierced by the rear-guard axle housing
It is fixed after assembly with tire, main gearbox assembly is supported and facilitates its operation by rear-guard axle case assy.No matter in this way straight
During row or turning, 6 stress of planetary gear is averaged distribution to four planetary gears 6 when transmitting torque
On, each 6 stress of planetary gear is smaller, under equal conditions can be using the planet tooth that intensity is low, size is small
Wheel 6, and the service life of the planetary gear 6 is extended, the axle shaft gear 5 and the planetary gear 6 are passed in power and torque
It is more uniform and steady during passing, it avoids semiaxis 4 from occurring shaking and rotating deviation in rotary course and then generates resonance,
Simultaneously because differential casing is steady compared with power transmitting between semiaxis 4, therefore a part can be eliminated and uttered long and high-pitched sounds, effectively increased
The NVH performance of vehicle simultaneously improves riding comfort.A kind of automobile rear driving axle assembly of the invention, compared with the existing technology excellent
Putting is: structure is simple, uttering long and high-pitched sounds in vehicle traveling process can be effectively reduced, and effectively improves the use longevity of planetary gear 6
Life, torque transmitting is steady, avoids generating resonance, effectively improves vehicle NVH performance and riding comfort.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It specifically may is that the rear-guard axle housing including after two rear-guard upper casings 21, rear-guard lower casing 22 and rear-guard on the basis of technical solution
Lid 23, the rear-guard upper casing 21 dock fixation with the rear-guard lower casing 22, in the rear-guard upper casing 21 and the rear-guard lower casing 22
Centre offers mounting hole, and the mounting hole of the rear-guard rear cover 23 and the rear-guard upper casing 21 and the rear-guard lower casing 22 is solid
Fixed, the position of the rear-guard rear cover 23 is corresponding with 27 position of differential assembly.In this way, rear-guard axle housing is by the rear-guard upper casing
21 and fixed, the not extra weld seam of the rear-guard lower casing 22, avoid stress from concentrating, axle housing mode is high, fixation, and not
Multiple stiffening plates are needed again, and structure is simple, at low cost.And then with the rear-guard rear cover 23 fixed in the middle part of the rear-guard lower casing 22
Stress concentration is further reduced, the non-deformability of global facility, and convenient formation are improved.Further preferred technical solution
Are as follows: the rear-guard lower casing 22 and the rear-guard upper casing 21 are gentle transition by one end to the other end.It in this way can be to avoid a variety of pipes
Diameter changes and bring problem of stress concentration.Technical solution further preferred on the basis of technical solution in front are as follows: described
23 cross section of rear-guard rear cover is diamond shape.The advantages of rear-guard rear cover 23 of diamond shape is that molding is easy and easy for installation.In addition
It can also be and be provided with radial ribs 24 on the outer wall of the bevel housing lower part.The effect of radial ribs 24 is to reinforce institute
The support force for stating bevel housing lower part improves the support stiffness of entire integral automobile rear driving axle assembly.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It specifically may is that four 6 uniform rings of planetary gear are set in the differential carrier body on the basis of technical solution, adjacent institute
Stating the interval angles between planetary gear 6 is 90 °.In this way, four planetary gears 6 are located in the differential carrier body,
Adjacent interval angles between the two, which are 90 °, can guarantee that the planetary gear 6 is symmetrically distributed on the differential casing,
Guarantee its Transmit evenly rotary force and torque on four azimuth planes, guarantees that be engaged with two axle shaft gears 5 are transported
Row is steady, and then is further ensured that the semiaxis 4 of left and right ends runs smoothly, i.e. the tire of left and right ends runs smoothly, further
Reduction is uttered long and high-pitched sounds, and avoids resonating, and effectively improves vehicle NVH performance and riding comfort, and since the planetary gear 6 is uniformly set
It sets on the differential casing, 6 stress of planetary gear is consistent, therefore its whole service life effectively extends.Into
The preferred technical solution of one step are as follows: be provided with 4 engaging tooth of semiaxis, the planet tooth on two 5 opposite flanks of axle shaft gear
Wheel 6 on be equipped with planet engaging tooth, 4 engaging tooth of semiaxis on two axle shaft gears 5 respectively with each planetary gear 6
On planet engagement tooth engagement connection.Described half that left and right ends are engaged with is driven when the planetary gear 6 rotates in this way
5 revolving speed of shaft gear generate difference, and then realize automobile to steadily turn left or turn right.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It is set on the basis of technical solution it may also is that being located at adjacent 6 interval location of the planetary gear on the differential casing
It sets and offers installing technological hole 7, four installing technological holes 7 are equipped on the differential casing, the installing technological hole 7 is uniformly
It is located on the differential casing.In this way, stress reduces, while described due to using four planetary gears 6
7 size of the installing technological hole opened up on differential casing is uniform can reduce, and effectively improve the whole differential carrier
The intensity and non-deformability of body, while reducing and uttering long and high-pitched sounds.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It may also is that the planetary gear 6 is rotatably affixed at the differential mechanism by planetary gear shaft 26 on the basis of technical solution
On shell, the outer end of the planetary gear shaft 26 is rotatably disposed on the differential casing, the planetary gear shaft 26
Inner end and it is fixed on 6 central position of planetary gear.In this way, 6 center of planetary gear is fixed on the planetary gear
26 inner end of axis, the rotation of planetary gear shaft 26 drives the planetary gear 6 to rotate, and the planetary gear shaft 26 is rotatable solid
It is scheduled on the differential casing, guarantees that the planetary gear 6 does not fall out and engages with the axle shaft gear 5.Guarantee institute
State planetary gear 6 can realize in company with the differential casing and by tooth 3 revolve while can be controlled by controller its around
26 rotation of planetary gear shaft, to realize differential speed rotation and the differential transmitting of left and right sides semiaxis 4.Certainly other be can also be
The connection type of structure, as long as the planetary gear 6 can be rotatably connected on the differential casing.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It may also is that each 4 inner end of semiaxis is arranged with differential bearing 8, the rotatable company of the semiaxis 4 on the basis of technical solution
It being connected in the differential bearing 8,8 inner end of differential bearing is fixed with the left and right ends portion of the differential casing respectively,
The outer end of the differential bearing 8 is provided with adjusting nut 9, and the adjusting nut 9 and 1 position of bevel housing are adjustable
Formula is detachably fixed.In this way, differential bearing 8 is set on semiaxis 4, such differential bearing 8 is fixed in the differential carrier body,
The semiaxis 4 rotates in the differential bearing 8, avoids wearing the semiaxis 4 and the differential casing, is convenient for changing described
Differential bearing 8, while the differential bearing 8 is used to support the inner end of the semiaxis 4.And in 8 outer end of differential bearing
It is provided with adjusting nut 9, the effect of adjusting nut 9 is can be detachable with the bevel housing 1 during assembly
It is fixed, while the adjustable differential bearing 8 is located at the position in the bevel housing 1 after the rotation of adjusting nut 9, into
And the position that the differential casing is located in the bevel housing 1 is adjusted, and then drive and moved by 3 position of tooth,
And then adjust by the backlash between tooth 3 and the main tooth so that backlash adjusted guarantee the main tooth with it is described
By tooth 3 engage in operational process can smooth movements, both avoid the position of engagement from generating deviation and generate howl in the process of running
It cries, it can further decrease and utter long and high-pitched sounds.Further preferred technical solution is on the basis of prior art scheme: the differential
Bearing cap 12 is provided on bearing 8, the bearing cap 12 is detachably fixed with the differential bearing 8 and connect, the adjusting nut 9
It is removably fixed between the bevel housing 1 and the bearing cap 12.In this way, bearing cap 12 and the differential bearing 8
It is fixed, and the adjusting nut 9 is detachably secured between the bevel housing 1 and the bearing cap 12.It is described in this way
9 position of adjusting nut is adjustably arranged on the bevel housing 1, therefore inwardly and outwardly by screw thread rotation connection
Movement, and then the bearing cap 12 is driven to move inward or outward, drive semiaxis 4 push the differential casing inwardly or
It is displaced outwardly, and then adjusts by the backlash between tooth 3 and main tooth, guarantee to reduce and utter long and high-pitched sounds and resonate.Technical solution in front
On the basis of further preferred technical solution are as follows: stating 4 left and right ends portion of semiaxis can by pivot flange 15 with rear-guard axle housing
Rotation connection, the medial surface of the pivot flange 15 are sealed with rear-guard axle case assy left and right ends and are fixed.In this way, setting
Pivot flange 15 the rotatable support of semiaxis 4 can be arranged in rear-guard axle case assy, and the inside of the pivot flange 15
Face be with sealing fixation of rear-guard axle case assy left and right ends avoid water or dust enter rear-guard axle case assy inside and
The transmitting of influence power and torque.Technical solution further preferred on the basis of technical solution in front are as follows: the pivot flange
Oil sealing 13 and dust cover 14 are provided between 15 and rear-guard axle case assy left and right ends, the oil sealing 13 and the dust cover 14 are equal
It is sheathed on the semiaxis 4,13 one side of oil sealing offsets with the pivot flange 15,14 one side of dust cover and institute
The sealing of pivot flange 15 is stated to offset.It can be by pivot flange 15 and the rear-guard axle case assy using oil sealing 13 and dust cover 14
The sealing of left and right ends portion is fixed, and can be entered to avoid dust, is further ensured that 4 rotating operation of semiaxis.Still more preferably
Technical solution are as follows: the differential bearing 8 is fixedly connected with the bearing cap 12 by bolt 25.Bolt 25 be fixed conveniently disassembly and
It installs and at low cost.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It may also is that the differential casing includes the differential mechanism left shell half 10 and differential mechanism right half-shell fastened on the basis of technical solution
11,10 right part of differential mechanism left shell half and 11 left part outer edge of the differential mechanism right half-shell are fixed with described by tooth 3.
The differential mechanism left shell half 10 described in this way and the differential mechanism right half-shell 11 form the differential casing after fastening.And it is equal by tooth 3
It is fixed with the differential mechanism right half-shell 11 and the differential mechanism left shell half 10, it can be driven when rotation at a slow speed by tooth 3 in this way
The differential mechanism left shell half 10 and the differential mechanism right half-shell 11 rotate simultaneously.Further preferred technical solution are as follows: the difference
Fast 10 right part of device left shell half and 11 left part of differential mechanism right half-shell are equipped with a circle connection ring, the differential mechanism left shell half
10 connection ring is docked with the connection ring of the differential mechanism right half-shell 11, is then docked with the connection ring set by 3 ring of tooth, is led to
It crosses at least two bolts 25 that uniform ring is set three is fixed together.Such fixed form is fixed than stronger, power and torsion
Square transmitting uniformly, and is driven the differential mechanism right half-shell 11 and the differential mechanism left shell half 10 while being rotated by tooth 3.
A kind of automobile rear driving axle assembly of the invention please refers to related each figure in the related each figure of Fig. 1 to Figure 10, in front
It may also is that the main tooth includes main tooth teeth portion 16 and main ratch portion 17 on the basis of technical solution, under the main ratch portion 17
End is integrally formed or is fixedly connected with main 16 center of tooth teeth portion, and the main tooth teeth portion 16 engages connection, institute by tooth 3 with described
It states main 17 top of ratch portion to be detachably fixed with the connecting flange 2, described 17 tops in main ratch portion and the main reducing gear
Shell 1 seals rotatable fixation.In this way, the main ratch portion 17 is detachably fixed with the connecting flange 2, and the main tooth tooth
Portion 16 is engaged with by tooth 3, realizes connecting flange 2 and the main tooth spiral is driven to turn, main tooth is engaged with by tooth 3, and then will rapidly be revolved
It walks around to turn to and rotate at a slow speed, realize that torque transmitting and direction of rotation change.In front on the basis of technical solution further preferably
Technical solution are as follows: be from top to bottom successively arranged under main tooth upper bearing (metal) 19, spacer cylinder 18 and main tooth in the main ratch portion 17
Bearing 20, the main tooth upper bearing (metal) 19, the spacer cylinder 18 and the main tooth lower bearing 20 are both secured to the final drive casing
In body 1, the main ratch portion 17 is rotatably connected in 20 center of the main tooth upper bearing (metal) 19, spacer cylinder 18 and main tooth lower bearing.
The effect that main tooth upper bearing (metal) 19 and main tooth lower bearing 20 is arranged is both the support main ratch portion 17 and avoids the main ratch
It wears in portion 17.Spacer cylinder 18 between main tooth upper bearing (metal) 19 and lower bearing 20 can provide pretightning force appropriate for bearing.In front
On the basis of technical solution it may also is that main 17 top of ratch portion passes through the oil sealing 13 that is sheathed in the main ratch portion 17
Be sealingly fastened in 1 top of bevel housing, be provided at position between the oil sealing 13 and the connecting flange 2 anti-
Dust hood 14,13 outer wall of oil sealing and 1 top inner wall of bevel housing sealing are fixed, and the dust cover 14 is covered on institute
State 13 top of oil sealing.In this way, guaranteeing at the top of bevel housing 1 sealing and dust-proof, dust and water is avoided to enter main reducing gear
The operation of each operation component is influenced in shell 1.Main 17 top of ratch portion passes through the oil that is sheathed in the main ratch portion 17
It seals 13 and is sealingly fastened in 1 top of bevel housing, be arranged at position between the oil sealing 13 and the connecting flange 2
There is dust cover 14,13 outer wall of oil sealing and 1 top inner wall of bevel housing sealing are fixed, and the lid of dust cover 14 is set
In 13 top of oil sealing.
It is above-mentioned that only several specific embodiments in the present invention are illustrated, but can not be as protection model of the invention
Enclose, it is all according to the present invention in design spirit made by equivalent change or modification or equal proportion zoom in or out, should all
Think to fall into protection scope of the present invention.
Claims (10)
1. a kind of automobile rear driving axle assembly, it is characterised in that: including rear-guard axle case assy and to be set to the rear-guard axle housing total
At the main gearbox assembly of central position, the main gearbox assembly includes connecting flange, bevel housing, is set to institute
It states the main tooth in final drive casing body, by tooth, differential assembly and be respectively rotatably connected in described differential assembly or so two
The semiaxis of side, the connecting flange are fixed with the main tooth, and the main tooth is angular wheel, described by tooth and the master
Tooth engagement is fixed, and the main tooth is mutually perpendicular to described by the central axis of tooth, the differential assembly include differential casing,
Four planets positioned at the axle shaft gear in left and right ends portion in the differential carrier body and between two axle shaft gears
Gear, the planetary gear is vertical with two axle shaft gears, each planetary gear respectively with two axle shaft gears
One side engagement connection, each planetary gear are rotatably disposed in the differential carrier body, and the axle shaft gear is another
Side is detachably fixed connection with the corresponding semiaxis respectively, and the semiaxis outer end is each passed through the rear-guard axle case assy
Left and right end portions after be detachably fixed with corresponding tire, it is described to be detachably fixed by tooth and the differential carrier outer rim,
The connecting flange and the main tooth position are described by tooth and the differential mechanism at the rear-guard axle case assy overcentre position
Assembly is located in the middle part of the rear-guard axle case assy.
2. a kind of automobile rear driving axle assembly according to claim 1, it is characterised in that: the rear-guard axle case assy includes
Two rear-guard upper casings, rear-guard lower casing and rear-guard rear cover, the rear-guard upper casing dock fixation with the rear-guard lower casing, on the rear-guard
Shell and rear-guard lower casing center offer mounting hole, can be with the rear-guard lower casing on the rear-guard rear cover and the rear-guard
Mounting hole is fixed, and the position of the rear-guard rear cover is corresponding with the differential assembly position.
3. a kind of automobile rear driving axle assembly according to claim 2, it is characterised in that: the rear-guard rear cover shape is water chestnut
Shape.
4. a kind of automobile rear driving axle assembly according to claim 1, it is characterised in that: the bevel housing lower part
Radial ribs are provided on outer wall.
5. according to claim 1 to a kind of automobile rear driving axle assembly described in 4 any one claims, it is characterised in that:
Four planetary gear uniform rings are set in the differential carrier body, and the interval angles between the adjacent planetary gear are
90°。
6. according to claim 1 to a kind of automobile rear driving axle assembly described in 4 any one claims, it is characterised in that:
It is located at setting at the adjacent planetary gear interval location on the differential casing and offers installing technological hole, the differential
Four installing technological holes are equipped on device shell, the installing technological hole uniform ring is set on the differential casing.
7. according to claim 1 to a kind of automobile rear driving axle assembly described in 4 any one claim, it is characterised in that:
Each semiaxis inner end is arranged with differential bearing, and the semiaxis is rotatably connected in the differential bearing, the differential
Bearing inner end is fixed with the left and right ends portion of the differential casing respectively, and the outer end of the differential bearing is provided with adjustment
Nut, the adjusting nut are detachably fixed with the bevel housing position adjustable.
8. a kind of automobile rear driving axle assembly according to claim 7, it is characterised in that: be provided on the differential bearing
Bearing cap, the bearing cap are fixedly connected with the differential bearing, and the adjusting nut is removably fixed in the main reducing gear
Between shell and the bearing cap.
9. a kind of automobile rear driving axle assembly according to claim 8, it is characterised in that: semiaxis left and right ends portion is equal
Be rotatably connected with the rear-guard axle case assy by pivot flange, the medial surface of the pivot flange with the rear-guard axle housing
The sealing of assembly left and right ends is fixed.
10. a kind of automobile rear driving axle assembly according to claim 9, it is characterised in that: the pivot flange with it is described
Oil sealing and dust cover are provided between rear-guard axle case assy, the oil sealing and the dust cover are sheathed on the semiaxis, institute
It states oil sealing one side to offset with the pivot flange, the dust cover one side offsets with pivot flange sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860844.7A CN109532335A (en) | 2017-09-21 | 2017-09-21 | A kind of automobile rear driving axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710860844.7A CN109532335A (en) | 2017-09-21 | 2017-09-21 | A kind of automobile rear driving axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109532335A true CN109532335A (en) | 2019-03-29 |
Family
ID=65828044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710860844.7A Pending CN109532335A (en) | 2017-09-21 | 2017-09-21 | A kind of automobile rear driving axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109532335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397707A (en) * | 2019-07-26 | 2019-11-01 | 广西汽车集团有限公司 | Speed reducer assembly and vehicle |
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| JP2007162869A (en) * | 2005-12-15 | 2007-06-28 | Toyota Motor Corp | Preload adjusting mechanism for bearing, and differential gear housing body and driving device having it |
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| CN110397707A (en) * | 2019-07-26 | 2019-11-01 | 广西汽车集团有限公司 | Speed reducer assembly and vehicle |
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