CN207758490U - Steering drive axle assembly - Google Patents
Steering drive axle assembly Download PDFInfo
- Publication number
- CN207758490U CN207758490U CN201721876444.7U CN201721876444U CN207758490U CN 207758490 U CN207758490 U CN 207758490U CN 201721876444 U CN201721876444 U CN 201721876444U CN 207758490 U CN207758490 U CN 207758490U
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- Prior art keywords
- axle housing
- wheel
- hub
- lip
- pin hole
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Abstract
The utility model provides a kind of steering drive axle assembly, including：Axle housing, two wheel hubs, main reducing gear band differential assembly and hub reduction gear；The axle housing is girder structure, it which is provided with the pendulum pin hole being connect with vehicle chassis, two wheel hubs are connected to the left and right ends of the axle housing by wheel hub steering structure, cavity is equipped in the middle part of the axle housing, the installation main reducing gear band differential assembly in it, respectively a piece drive shaft of rotation connection, the drive shaft turns connect the hub reduction gear at the axle housing both ends for main reducing gear band differential assembly both sides；Wear-resisting steel bushing and double-lip grease seal is respectively set in the pendulum pin hole both ends；The wear-resisting steel bushing is placed on the pendulum pin hole both ends；The double-lip grease seal side is contacted with pendulum pin hole wall, and the other side forms grease storing chamber with the wear-resisting steel bushing.The utility model realizes the replacement frequency for effectively reducing and putting and selling and reduces expenses to reduce cost.
Description
Technical field
The utility model is related to a kind of steering drive axle assemblies, and in particular to a kind of engineering machinery and agricultural machinery turn to
Driving axis.
Background technology
With the lasting propulsion of national Urbanization Construction and infrastructure, the producing and selling to engineering machinery, agricultural machinery
The volume of production and marketing of the loader-digger and large tractor that have apparent promotion, especially large-tonnage rises apparent.Meanwhile engineering machine
Technical merit, manufacturing process of the agricultural machinery such as tool, tractor etc. have significant progress, using the shape of four-wheel drive
The type of formula is more and more common.Higher demand also proposed to the quality requirement of complete machine simultaneously.Engineering machinery, farm machinery
Working environment is severe, has higher requirements to the reliability and passability of complete machine.Trend is had become using the type of four-wheel drive.Mesh
The preceding vehicle bridge dead weight used is larger, and bearing capacity is little, and will appear oil leak at hub reduction gear since structure is not compact
Or the problem of influence mechanical quality such as wheel side planetary gear damage.
The patent of invention front steering drive axle assembly (application number CN201210259961.5) that the applicant has authorized has solved
It has determined the above problem.But with the continuous development of technology, the excavation of domestic project machinery, agricultural machinery especially large-tonnage fills
Carrier aircraft and large tractor will be used wider and wider, and such vehicle is because applying working condition is severe, operation in the wild substantially, it is desirable that
There is cross-country traveling ability on chassis, high power output, has 4 wheel drives, and overall mass is required to stablize, and failure rate wants low.Practical mistake
In journey, problems with is exposed：
Steering drive axle assembly uses upper pendulum pin connection with vehicle frame, puts and is sold to toward being easily damaged in practical application, is often needed
It replaces, undoubtedly increases cost.
Therefore, how to reduce the replacement of pendulum pin becomes one of this field urgent problem to be solved.
Utility model content
The purpose of this utility model is to provide a kind of steering drive axle assembly, can effectively reduce the replacement frequency of pendulum pin,
To reduce cost, reduce expenses.
The utility model provides the following technical solution：
A kind of steering drive axle assembly, including：Axle housing, two wheel hubs, main reducing gear band differential assembly and hub reduction
Device；The axle housing is girder structure, which is provided with the pendulum pin hole being connect with vehicle chassis, two wheel hubs are turned to by wheel hub
Structure is connected to the left and right ends of the axle housing, and cavity, the interior installation main reducing gear band differential are equipped in the middle part of the axle housing
Device assembly, respectively a piece drive shaft of rotation connection, the drive shaft turns connect institute for main reducing gear band differential assembly both sides
State the hub reduction gear at axle housing both ends；The axle housing is equipped with wheel steering drive device, the wheel steering drive device point
It is not connect with the wheel hub steering structure of two wheel hubs；The hub reduction gear includes the wheel being mounted on the wheel hub
Side reducer shell, planetary gear and planet wheel spindle, the hub reducer casing inner cavity are equipped with the gear ring supported by gear ring support, tooth
Coil support is fixedly mounted on the axle housing；The planetary gear is mounted on the row being fixed on the hub reducer casing
On spider gear shaft, and engaged with the gear ring and the drive shaft；The axle housing section is in hollow cavity structure, the drive shaft
The main reducing gear band differential assembly and the hub reduction gear at both ends are connected by hollow cavity；The planet wheel spindle edge
It is provided with aperture, the hub reducer casing is corresponding to be provided with deep gouge, and Anti-moving ball is installed between the hole and slot；The wheel side subtracts
The outermost of fast device shell is equipped with end cap；
Wear-resisting steel bushing and double-lip grease seal is respectively set in the pendulum pin hole both ends；The wear-resisting steel bushing is placed on the pendulum pin hole
Both ends；The double-lip grease seal side is contacted with pendulum pin hole wall, and the other side forms grease storing chamber with the wear-resisting steel bushing.
Further, the double-lip grease seal includes oil tight skeleton, main lip end, secondary lip end and holds spring tightly；It is described
Oil tight skeleton one end is connected with the secondary lip end, and the other end is contacted with the pendulum pin hole wall；The main lip end is close to institute
It states holding spring and the main lip end is disposed far from one end of the axle housing longitudinal centre line；The pair lip end is provided close to
One end of the axle housing longitudinal centre line.
In this way after internal lubrication fat is full of, because main lip end 21 is outside, lubricating grease under pressure can be suitable outward
Profit outflow, when normal use can seal internal lubrication fat not again makes its outflow；Secondary lip end 22 is provided close in 1 longitudinal direction of axle housing
One end of heart line, secondary lip end 22 can ensure that external silt will not be into the case where destroying main lip end 21 and sealing inside
Enter at wear-resisting steel bushing, guarantee still keeps sufficient lubrication herein.Existing structure is such as used, i.e., main lip end is in axle housing longitudinal direction
One end of heart line, when grease adding, chamber pressure increasing, which can cause stress compressing seal lip, makes the enclasping force at main lip end
Increasing causes lubricating grease assembly difficult, is difficult to fill with inner cavity, be easy to cause the insufficient generation premature wear of lubrication of pendulum axis pin.
Further, the cross sectional shape of the axle housing is equipped between rectangle and the axle housing upper and lower ends face reinforces standing
Muscle.Increase the rigidity of support of axle housing.Increase the service life of axle housing.
The utility model has the beneficial effects that：Double-lip grease seal has abandoned inverted L-shaped in the prior art, and uses inverted
S-shaped so that the main lip end of double-lip grease seal is close to holding spring tightly and main lip end is disposed far from the one of axle housing longitudinal centre line
End, in this way after internal lubrication fat is full of, because main lip end is outside, lubricating grease can smoothly flow out outward under pressure,
Can seal internal lubrication fat not again when normal use makes its outflow；Secondary lip end is provided close to the one of axle housing longitudinal centre line
End, secondary lip end can ensure that external silt will not enter wear-resisting steel bushing in the case where destroying main lip end and sealing inside
Place, guarantee still keep sufficient lubrication herein.Existing structure is such as used, i.e., main lip end is close to the one of axle housing longitudinal centre line
End, when grease adding, chamber pressure increasing, which can cause stress compressing seal lip, makes the enclasping force increasing at main lip end cause
Lubricating grease assembly is difficult, is difficult to fill with inner cavity, be easy to cause the insufficient generation premature wear of lubrication of pendulum axis pin.It can be seen that this practicality
Novel, the replacement frequency that can effectively reduce pendulum pin is reduced expenses to reduce cost.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
Novel embodiment for explaining the utility model, does not constitute limitations of the present invention together.In the accompanying drawings：
Fig. 1 is pendulum pin-and-hole structure schematic diagram；
Fig. 2 is the structural schematic diagram of steering drive axle assembly；
Wherein, 1, axle housing；2, double-lip grease seal；3, wear-resisting steel bushing；4, curved neck formula grease nipple；5, main reducing gear band differential mechanism
Assembly；6, fluid-link steering oil cylinder；7, steering linkage；8, universal drive shaft；9, upper backing pin；10, knuckle；11, wheel hub；12, it takes turns
Side reducer shell；13, planet wheel spindle；14, needle roller；15, planetary gear；16, gear ring；17, gear ring supports；18, hub bearing；19、
Lower backing pin；20 oscillating bearings；21, main lip end；22, secondary lip end；23, spring is held tightly；24 oil tight skeletons；31 pendulum pin holes；32、
Pendulum pin；33, grease storing chamber.
Specific implementation mode
As shown in Figs. 1-2, a kind of steering drive axle assembly, including axle housing 1, main reducing gear band differential assembly 5, hydraulic rotation
It is total to oil cylinder 6, steering linkage 7, universal drive shaft 8, upper backing pin 9, lower backing pin 19, knuckle 10, wheel hub 11 and hub reduction gear
At；Wherein：Axle housing 1 and knuckle 10 are linked together by upper backing pin 9 and lower backing pin 19；Upper backing pin 9 passes through pin, hole cooperation peace
On axle housing 1；Lower backing pin 19 is mounted on by oscillating bearing 20 on axle housing 1；Fluid-link steering oil cylinder 6 is bolted on bridge
On shell 1；Main gearbox assembly 5 is mounted on by bolt on axle housing 1；7 one end of steering linkage is fixed on fluid-link steering oil cylinder 6,
The other end realizes turning function by asking pin taper hole to be fixed on knuckle 10；Wheel hub 11 is mounted on by hub bearing 18 to be turned
To on section 10；There is spline in 8 inner end of universal drive shaft, by connecting with the axle shaft gear internal spline in differential assembly with main reducing gear
It connects；Outer end is involute cylindrical gear, serves as the sun gear in hub reduction gear assembly；Hub reduction gear assembly is supported by gear ring
17, gear ring 16, hub reducer casing 12, planet wheel spindle 13, planetary gear 15 and needle roller 14 form；Deceleration principle is NGW patterns, this
Place does not describe.Wherein gear ring branch support 17 is bolted on knuckle 10, and hub reducer casing 12 is solid by screw
It is scheduled on wheel hub 11.
To promote the reliability and durability of pendulum pin connection, the replacement frequency of pendulum pin is reduced；31 both ends of pin hole are put in axle housing 1
Wear-resisting steel bushing 3 and double-lip grease seal 2 are set.Grease storing chamber 33 is formed between wear-resisting steel bushing 3 and double-lip grease seal 2.Grease storing chamber 33 is used
To fill lubricating grease, ensure to lubricate between pendulum pin and wear-resisting steel bushing 3 in use fully to reduce abrasion；Lubricating grease passes through
Curved neck formula grease nipple 4 filling being arranged on axle housing 1.Curved neck formula grease nipple 4 is connected with grease storing chamber 33.
Wherein, wear-resisting steel bushing 3 is circular ring shape, is socketed in the both ends of pendulum pin hole 31 respectively.It is visible in the present embodiment resistance to
Steel bushing 3 is ground between pendulum pin 32 and pendulum pin hole 31, effectively alleviates the abrasion of pendulum pin.
Double-lip grease seal 2 uses new structure.Specifically, double-lip grease seal 2 include oil tight skeleton 24, main lip end 21,
Secondary lip end 22 and holding spring 23.24 one end of oil tight skeleton is connected with secondary lip end 22, and the other end connects with pendulum pin hole 31
It touches.Main lip end 21 is disposed far from one end of 1 longitudinal centre line of axle housing close to holding spring 23 and main lip end 21, in this way when interior
After portion's lubricating grease is full of, because main lip end 21 is outside, lubricating grease can smoothly flow out outward under pressure, when normal use
Internal lubrication fat, which can be sealed, not again makes its outflow；Secondary lip end 22 is provided close to one end of 1 longitudinal centre line of axle housing, secondary lip
End 22 can ensure that external silt will not enter at wear-resisting steel bushing in the case where destroying main lip end 21 and sealing inside, ensure
Sufficient lubrication is still kept herein.Existing structure, i.e., main lip end is such as used to work as lubrication close to one end of axle housing longitudinal centre line
Chamber pressure increasing, which can cause stress compressing seal lip, when fat fills makes the enclasping force increasing at main lip end that lubricating grease be caused to fill
With difficulty, it is difficult to fill with inner cavity, be easy to cause the insufficient generation premature wear of lubrication of pendulum pin 32.
Most of structure is that oil sealing is not either using single lip mouth oil seal at home, such as without the stream of oil sealing lubricating grease
It loses soon, inside is easy to oil starvation, causes pendulum pin to dry grind with wear-resistant sleeve, wears and increase, and external silt is easy to be mixed into inside, into
One step accelerates abrasion；Single lip mouth oil seal, sealing effect is such as used to have, but be not as with obvious effects as double-lip grease seal.Even existing
Double-lip grease seal cannot still reach ideal effect.
In the prior art, double-lip grease seal is originally inverted L-shaped.It is irregular to be laterally arranged in the present embodiment
S-shaped, wherein hold the recessed portion that spring 24 is set to the opening upwards of S-shaped tightly；Main lip end is set to the circle of corresponding S-shaped
Arc portion, but the portion is not smooth circular arc but flanging, secondary lip end nor smooth circular arc but circular arc is tangent cuts
Line, wherein secondary lip end is located at taking tangential sections.
In addition, the cross sectional shape of axle housing 1 is equipped between rectangle and 1 upper and lower ends face of axle housing reinforces stud.Increase axle housing
Rigidity of support.Increase the service life of axle housing.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, although ginseng
The utility model is described in detail according to previous embodiment, it for those skilled in the art, still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this practicality
Within novel protection domain.
Claims (3)
1. a kind of steering drive axle assembly, including：Axle housing, two wheel hubs, main reducing gear band differential assembly and hub reduction gear；
The axle housing is girder structure, which is provided with the pendulum pin hole being connect with vehicle chassis, and two wheel hubs are turned to by wheel hub and tied
Structure is connected to the left and right ends of the axle housing, and cavity, the interior installation main reducing gear band differential mechanism are equipped in the middle part of the axle housing
Assembly, each piece drive shaft of rotation connection in main reducing gear band differential assembly both sides, described in the drive shaft turns connection
The hub reduction gear at axle housing both ends；The axle housing is equipped with wheel steering drive device, the wheel steering drive device difference
It is connect with the wheel hub steering structure of two wheel hubs；The hub reduction gear includes the wheel side being mounted on the wheel hub
Reducing gearbox, planetary gear and planet wheel spindle, the hub reducer casing inner cavity are equipped with the gear ring supported by gear ring support, gear ring
Holder is fixedly mounted on the axle housing；The planetary gear is mounted on the planet being fixed on the hub reducer casing
On wheel shaft, and engaged with the gear ring and the drive shaft；The axle housing section is in hollow cavity structure, and the drive shaft is logical
Cross the main reducing gear band differential assembly and the hub reduction gear at hollow cavity connection both ends；It opens at the planet wheel spindle edge
There is aperture, the hub reducer casing is corresponding to be provided with deep gouge, and Anti-moving ball is installed between the hole and slot；The hub reduction
The outermost of device shell is equipped with end cap；
It is characterized in that：Wear-resisting steel bushing and double-lip grease seal is respectively set in the pendulum pin hole both ends；The wear-resisting steel bushing is placed on institute
State pendulum pin hole both ends；The double-lip grease seal side is contacted with pendulum pin hole wall, and the other side forms grease storing chamber with the wear-resisting steel bushing.
2. steering drive axle assembly according to claim 1, which is characterized in that the double-lip grease seal include oil tight skeleton,
Main lip end, secondary lip end and holding spring；Described oil tight skeleton one end is connected with the secondary lip end, the other end with it is described
Put the contact of pin hole wall；The main lip end is disposed far from close to the holding spring and the main lip end in the axle housing longitudinal direction
One end of heart line；The pair lip end is provided close to one end of the axle housing longitudinal centre line.
3. steering drive axle assembly according to claim 1 or claim 2, which is characterized in that the cross sectional shape of the axle housing is rectangle
And it is equipped between the axle housing upper and lower ends face and reinforces stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876444.7U CN207758490U (en) | 2017-12-28 | 2017-12-28 | Steering drive axle assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876444.7U CN207758490U (en) | 2017-12-28 | 2017-12-28 | Steering drive axle assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207758490U true CN207758490U (en) | 2018-08-24 |
Family
ID=63185586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721876444.7U Active CN207758490U (en) | 2017-12-28 | 2017-12-28 | Steering drive axle assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207758490U (en) |
-
2017
- 2017-12-28 CN CN201721876444.7U patent/CN207758490U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |