CN207437723U - A kind of new straight-tooth cone tooth inner hole of planetary gear structure - Google Patents
A kind of new straight-tooth cone tooth inner hole of planetary gear structure Download PDFInfo
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- CN207437723U CN207437723U CN201721683747.7U CN201721683747U CN207437723U CN 207437723 U CN207437723 U CN 207437723U CN 201721683747 U CN201721683747 U CN 201721683747U CN 207437723 U CN207437723 U CN 207437723U
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- tooth
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- endoporus
- planetary gear
- inner hole
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Abstract
A kind of new straight-tooth cone tooth inner hole of planetary gear structure, the inner hole structure of the utility model is non-fully straight wall structure, that is, generates centerline parallel of the busbar of endoporus not with endoporus, the endoporus both ends diameter similar tapered configuration more bigger than mid diameter.The inner hole structure of the utility model, cross axle outer diameter with being entirely cylindrical surface fits together, in the operating condition, always can be ensured that has certain gap between inner hole wall and cross axle external cylindrical surface, store certain lubricating oil, the lubrication between tooth inner hole of planetary gear and cross axle outer diameter is bored for straight-tooth, prevents from spot corrosion occur between straight-tooth cone tooth planetary gear and cross axle, peel off or pull until the phenomenon that locking, extend the service life of differential assembly.
Description
Technical field
The utility model belongs to straight bevel gear differential drive field, and in particular to a kind of new straight-tooth cone tooth planet
Bore structure.
Background technology
Common automobile differential, general there are four straight-tooth cone tooth planetary gear, cross axle, two differential half casings and two
A straight-tooth cone tooth axle shaft gear and spherical pad, axle shaft gear gasket etc. related accessories composition.Differential casing and planetary gear
Cross axle is connected, and forms planet carrier.When automobile is in smooth-riding surface straight-line travelling, four straight-tooth bore tooth planetary gear companion
Planet carrier is around the cone tooth axle shaft gear axis revolution of two straight-tooth, and straight-tooth cone tooth planet, axle shaft gear are in relative static conditions at this time.
When automobile turning when driving, it is necessary to adapt to turn during outside driven wheel stroke be more than interior side drive wheel stroke needs, two
With regard to variant, four straight-tooth cone tooth planetary gears are removed and revolved round the sun in company with planet carrier around two-semiaxle Gear axis the angular speed that wheel rotates
Outside, also each around the axis rotation of itself, straight-tooth bores tooth planet at this time, the cone tooth of axle shaft gear starts engaged transmission, is meshed
Monodentate stress simultaneously transfers torque.As each monodentate stress is of different sizes in whole process, each straight-tooth cone tooth planetary gear is circumferentially
Direction stress is with regard to unbalanced, in cross axle outer diameter rotation process, straight-tooth Zhui Chi planetary gears center of effort's line and cross axle
Center line is misaligned in most cases, thus has the trend for deviateing spider center line in various degree so that each straight
Tooth bores the gap of tooth inner hole of planetary gear and cross axle outer diameter with regard to non-constant, will there are straight-tooth cone tooth inner hole of planetary gear and ten
Trapped fuel amount between word axis is uneven, when meeting the severe aggravation of road conditions by chance or the transient distortion of Vehicle Speed, differential mechanism are straight
Tooth bevel gear, which is present with, to be born the several times or even dozens of times of load and increases severely, make straight-tooth cone tooth inner hole of planetary gear and cross axle it
Between trapped fuel amount be not enough to form lubricating oil film so that cross axle outer diameter and straight-tooth cone tooth planetary gear part inner hole wall it is deadlocked
Together, there is straight-tooth cone tooth planetary gear locking cross axle, and make cross axle fracture, differential assembly is caused to damage.Sometimes it is straight
Tooth bores the deadlocked of tooth inner hole of planetary gear and cross axle short time or small area, though it is not enough to straight-tooth cone tooth planetary gear armful occur
Dead cross axle, but cross axle outer diameter and straight-tooth can be made to bore tooth inner hole of planetary gear, there is spot corrosion, peel off or pull, affect it
Finish demand is assembled, is more easy to straight-tooth cone tooth planetary gear locking cross axle occur, and makes cross axle fracture, causes differential mechanism total
Into damage.Therefore a kind of new straight-tooth cone tooth inner hole of planetary gear structure is researched and developed so that straight-tooth bores the planetary endoporus of tooth
Ensure certain gap between cross axle outer diameter, make to store certain oil mass always between the two, improve greasy property, prevent straight
Tooth bores the locking phenomenon between tooth planetary gear and cross axle, extends the service life of differential assembly, has very practical
Meaning.
The content of the invention
The purpose of this utility model is to overcome the prior art and the deficiency of structure, and provide a kind of new straight-tooth cone
Tooth inner hole of planetary gear structure so that ensure certain gap between the planetary endoporus of straight-tooth cone tooth and cross axle outer diameter,
Make to store certain oil mass always between the two, improve greasy property, prevent embracing between straight-tooth cone tooth planetary gear and cross axle
Dead phenomenon extends the service life of differential assembly.
The utility model is realized in this way：A kind of new straight-tooth cone tooth inner hole of planetary gear structure, endoporus is non-
Complete straight wall structure, that is, the busbar for generating endoporus are not the centerline parallel with endoporus.Conventional straight-tooth cone tooth is planetary
Endoporus, is the identical straight endoporus of a both ends diameter, the centerline parallel of any busbar of endoporus with endoporus, the reality of the endoporus
It is existing, it can be completed by turnery processing, can also be completed by grinding.And the utility model straight-tooth cone planetary endoporus of tooth
Structure is non-fully straight wall structure, the endoporus both ends diameter similar tapered configuration more bigger than mid diameter, is bored with conventional straight-tooth
Face on the basis of the half of the planetary interior hole length of tooth, inward hole both ends extension, retains former diameter of bore and a certain length not
Become, self-reference plane extends toward endoporus both ends, forms the small endoporus of outer imperial palace, and both ends diameter is bigger 0.4-0.5mm than mid diameter, should
The realization of endoporus can only be completed by programming of NC-Lathe, turnery processing.The invention straight-tooth bores tooth inner hole of planetary gear structure
0≤L1≤1/3d1, R is uncertain value, can change with the variation of original product diameter of bore size and length, but follow endoporus
The principle of both ends diameter 0.4-0.5mm bigger than mid diameter, during ensuring that the endoporus of the utility model and cross axle assemble, with ten
Ensure certain gap between word axis outer circle, make to store certain oil mass always between the two, improve greasy property, prevent straight-tooth from boring
Locking phenomenon between tooth planetary gear and cross axle extends the service life of differential assembly.
The new straight-tooth cone tooth inner hole of planetary gear structure, the busbar of endoporus is not to be put down with the center line of endoporus
Row.
The new straight-tooth cone tooth inner hole of planetary gear structure, is the face on the basis of the half of hole length in original, to
Endoporus both ends extend, and retain former diameter of bore and a certain length L1Constant, self-reference plane extends toward endoporus both ends, and endoporus is
Outer big (bigger 0.4-0.5mm than former diameter of bore), the similar tapered configuration or tapered configuration of interior small (identical with former diameter of bore).
The new straight-tooth cone tooth inner hole of planetary gear structure, the realization of the special endoporus of entity can only pass through vehicle
Processing is cut to complete.
The new straight-tooth cone tooth inner hole of planetary gear structure, 0≤L1≤1/3d1, R is uncertain value, can be with original
Product diameter of bore size and length change and change, but should follow endoporus both ends diameter 0.4-0.5mm's bigger than mid diameter
Principle.
Described new straight-tooth cone tooth inner hole of planetary gear structure, also can middle part be one section of straight hole, both ends are tapered hole,
Its 0≤L2≤1/3d2, δ is uncertain value, can be changed with the variation of hole length in original product, but it is straight to follow endoporus both ends
The principle of footpath 0.4-0.5mm bigger than mid diameter.
The beneficial effects of the utility model：The utility model is because of the advance of its structure, finally formed new straight-tooth
Tooth inner hole of planetary gear structure is bored, the cross axle outer diameter with being entirely cylindrical surface is fitted together, in the operating condition, always can
Enough ensure there is certain gap between inner hole wall and cross axle external cylindrical surface, store certain lubricating oil, tooth planet is bored for straight-tooth
Lubrication between bore and cross axle outer diameter is prevented from occurring spot corrosion between straight-tooth cone tooth planetary gear and cross axle, peeled off
Or pull until the phenomenon that locking, extend the service life of differential assembly.
Description of the drawings
Fig. 1 is the planetary gear of the utility model and spherical pad, cross axle, the assembling schematic diagram of differential casing；
Fig. 2 is the structure diagram of the utility model embodiment 1；
Fig. 3 is the structure diagram of the utility model embodiment 2；
In Fig. 1,2,3：1-- differential casings；2-- cross axles；Straight-tooth cone tooth planetary gear new 3--；4-- ball rings
Piece；5-- novel straight tooths cone tooth planetary gear approximation conical bore arc radius R；6-- novel straight tooths bore tooth planetary gear straight wall endoporus
Diameter d1；Hole length L in 7-- novel straight tooths cone tooth planetary gear straight wall1；8-- novel straight tooths cone tooth planetary gear straight wall endoporus is straight
Footpath d2；Hole length L in 9-- novel straight tooths cone tooth planetary gear straight wall2；10-- novel straight tooths bore tooth planetary gear conical bore cone angle
δ。
Specific embodiment
The utility model is described further with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Fig. 2, a kind of new straight-tooth cone tooth inner hole of planetary gear structure, endoporus is non-fully straight wall structure,
The busbar for generating endoporus is not the centerline parallel with endoporus.It is that the planetary interior hole length of tooth is bored with conventional straight-tooth
Face on the basis of half, inward hole both ends extension, retains former diameter of bore and a certain length L1Constant, self-reference plane is toward endoporus both ends
Extension, endoporus are outer big (bigger 0.4-0.5mm than former diameter of bore), the similar taper of interior small (identical with former diameter of bore)
Structure or tapered configuration, the realization of the endoporus can only be completed by programming of NC-Lathe, turnery processing.The new straight-tooth
Tooth inner hole of planetary gear structure is bored, mask method is as shown in Fig. 2, 0≤L1≤1/3d1, R is uncertain value, can be in original product
The variation of pore diameter size and length and change, but follow the principle of endoporus both ends diameter 0.4-0.5mm bigger than mid diameter, with
When ensuring that the endoporus of the present invention is assembled with cross axle, ensure certain gap between cross axle outer circle, make to store up always between the two
Certain oil mass is deposited, improves greasy property, the locking phenomenon between straight-tooth cone tooth planetary gear and cross axle is prevented, extends differential
The service life of device assembly.
Embodiment 2
As shown in figure 3, a kind of new straight-tooth cone tooth inner hole of planetary gear structure, endoporus is non-fully straight wall structure,
That is, the busbar of generation endoporus is not the centerline parallel with endoporus.With the conventional straight-tooth cone planetary interior hole length of tooth
Face on the basis of half, inward hole both ends extension, retains former diameter of bore and a certain length L2Constant, self-reference plane is toward endoporus both ends
Extension, endoporus are outer big (bigger 0.4-0.5mm than former diameter of bore), the similar taper of interior small (identical with former diameter of bore)
Structure or tapered configuration, the realization of the endoporus can only be completed by programming of NC-Lathe, turnery processing.The utility model
Straight-tooth bores tooth inner hole of planetary gear structure, and mask method is as shown in figure 3,0≤L2≤1/3d2, δ is uncertain value, can be with original
The variation of product diameter of bore size and length and change, but follow the original of endoporus both ends diameter 0.4-0.5mm bigger than mid diameter
Both when then, to ensure that the endoporus of the utility model is assembled with cross axle, ensure certain gap between cross axle outer circle, make
Between store certain oil mass always, improve greasy property, prevent the locking phenomenon between straight-tooth cone tooth planetary gear and cross axle,
Extend the service life of differential assembly.
Claims (4)
1. a kind of new straight-tooth cone tooth inner hole of planetary gear structure, it is characterised in that：The inner hole structure is non-fully straight wall
Structure, that is, the busbar for generating endoporus are not centerline parallel with endoporus, similar more bigger than mid diameter of endoporus both ends diameter
Tapered configuration.
2. a kind of new straight-tooth cone tooth inner hole of planetary gear structure according to claim 1, it is characterised in that：In described
Pore structure is the face on the basis of the half of the conventional straight-tooth cone planetary interior hole length of tooth, and the extension of inward hole both ends retains former
Diameter of bore and a certain length are constant, and self-reference plane extends toward endoporus both ends, the small endoporus of the outer imperial palace of formation, in both ends diameter ratio
The big 0.4-0.5mm of portion's diameter.
3. a kind of new straight-tooth cone tooth inner hole of planetary gear structure according to claim 2, it is characterised in that：In described
0≤L of pore structure1≤1/3d1, R is uncertain value, can change with the variation of original product diameter of bore size and length, but abide by
Follow the principle of endoporus both ends diameter 0.4-0.5mm bigger than mid diameter.
4. a kind of new straight-tooth cone tooth inner hole of planetary gear structure according to claim 2, it is characterised in that：In described
Pore structure also can middle part for one section of straight hole, both ends are tapered hole, 0≤L2≤1/3d2, δ is uncertain value, can be with original product
The variation of interior hole length and change, but the principle of endoporus both ends diameter 0.4-0.5mm bigger than mid diameter should be followed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721683747.7U CN207437723U (en) | 2017-11-25 | 2017-11-25 | A kind of new straight-tooth cone tooth inner hole of planetary gear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721683747.7U CN207437723U (en) | 2017-11-25 | 2017-11-25 | A kind of new straight-tooth cone tooth inner hole of planetary gear structure |
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| Publication Number | Publication Date |
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| CN207437723U true CN207437723U (en) | 2018-06-01 |
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| CN201721683747.7U Active CN207437723U (en) | 2017-11-25 | 2017-11-25 | A kind of new straight-tooth cone tooth inner hole of planetary gear structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882957A (en) * | 2017-11-25 | 2018-04-06 | 洛阳华冠齿轮股份有限公司 | A kind of new straight-tooth cone tooth inner hole of planetary gear structure |
-
2017
- 2017-11-25 CN CN201721683747.7U patent/CN207437723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107882957A (en) * | 2017-11-25 | 2018-04-06 | 洛阳华冠齿轮股份有限公司 | A kind of new straight-tooth cone tooth inner hole of planetary gear structure |
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