CN207034153U - A kind of planetary gear - Google Patents
A kind of planetary gear Download PDFInfo
- Publication number
- CN207034153U CN207034153U CN201721004164.7U CN201721004164U CN207034153U CN 207034153 U CN207034153 U CN 207034153U CN 201721004164 U CN201721004164 U CN 201721004164U CN 207034153 U CN207034153 U CN 207034153U
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- CN
- China
- Prior art keywords
- oil groove
- gear
- planetary gear
- groove
- communicated
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Abstract
The utility model provides a kind of planetary gear, belongs to field of mechanical technique.It solves the problems such as existing planetary gear lubricant effect is bad.This planetary gear includes the gear with axis hole, gear is provided with the external gear teeth for favouring gear centerline direction, the end face of gear is plane, the other end of gear is spherical, if the equally distributed oil groove in arterial highway is radially offered on the spherical of gear, the inner of oil groove is communicated in axis hole, the outer end of oil groove is communicated in the outside portion of external gear teeth, and the inner of oil groove and outer end are in closing in shape to cause the inner groove width with outer end of oil groove to be respectively less than the groove width in the middle part of oil groove.The utility model has the advantages that high lubricating effect.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of gear, more particularly to a kind of planetary gear.
Background technology
Automobile differential can make left and right（It is or forward and backward）Driving wheel realize with different rotating speeds rotate mechanism, its mainly by
Left and right axle shaft gear, two planetary gears and tooth rest composition.
Planetary gear in existing automobile differential includes gear, axially offers and wears in the middle part of gear
Hole, gear, which is provided with, favours the external gear teeth of gear centerline direction, and gear end face is plane, gear sheet
Body other end is the spherical for being matched with differential casing inwall, but the lubrication between spherical and differential casing inwall
It is ineffective, service life is influenceed, external gear teeth, which also exists, in addition engages ineffective and cause circular runout, produce asking for vibration
Topic.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, there is provided a kind of high lubricating effect
Planetary gear.
The purpose of this utility model can be realized by following technical proposal：A kind of planetary gear, including with axis hole
Gear, described gear are provided with the external gear teeth for favouring gear centerline direction, one end of gear
Face is plane, and the other end of gear is spherical, it is characterised in that is radially opened on the spherical of described gear
If provided with the equally distributed oil groove in arterial highway, the inner of described oil groove is communicated in axis hole, and the outer end of oil groove is communicated in external gear teeth
Outside portion, the inner of described oil groove and outer end are in closing in shape to cause the inner groove width with outer end of oil groove to be respectively less than in oil groove
The groove width in portion.
Oil groove stores for lubricating oil in this planetary gear, and the inner of oil groove and outer end cause lubricating oil to be not easy in closing in shape
Thrown away from oil groove, the cell wall of oil groove can complete immersion oil, during this planetary gear rotation, lubricating oil in oil groove in spherical and
Oil film is easily formed between differential casing inwall, high lubricating effect, reduces the abrasion of spherical, and lubricating oil can enter to external gear teeth
Row lubrication, is easy to engaged transmission, extends service life.
In a kind of above-mentioned planetary gear, the inwall of described axis hole axially offers one-to-one excessively oily with oil groove
Groove, described one end for crossing oil groove are communicated in the inner of corresponding oil groove, and the other end for crossing oil groove is communicated in the flat of gear
Face.So crossing the lubricating oil of oil groove can be lubricated to shaft hole inner wall, reduce abrasion, extend service life, and lubricating oil in
There is certain circulation in oil groove and excessively oil groove, while playing lubrication, also function to cooling effect, this planetary gear can be for a long time
Normal work.
In a kind of above-mentioned planetary gear, described oil groove and the cell wall section for crossing oil groove are in arc surfaced.So hinder
Buddhist nun is small, is easy to lubricating oil to circulate.
In a kind of above-mentioned planetary gear, described oil groove and the quantity for crossing oil groove are three.It will not so destroy
Structural strength, and lubricant effect can ensure.
In a kind of above-mentioned planetary gear, the flank profil of described external gear teeth is provided with chamfering.Foreign steamer is easy in the setting of chamfering
The engagement of tooth, transmission process is stable, and enhances the anti-pressure ability at flank profil, service life length.
In a kind of above-mentioned planetary gear, the both ends aperture of described axis hole is equipped with the spigot surface in enlarging shape.This
Sample is easy to this planetary gear to be oriented to installation.
In a kind of above-mentioned planetary gear, it is 0.8-1.2mm that the surfaces externally and internally of described gear, which is respectively provided with thickness,
Carburized layer.So so that this planetary surfaces externally and internally possesses high rigidity and good wearability, service life length.
Compared with prior art, this planetary gear is easy for installation, and structural strength is high, high lubricating effect, and abrasion is small, uses the longevity
Life length, and good cooling results, good operating stability.
Brief description of the drawings
Fig. 1 is this planetary structural front view.
Fig. 2 is the partial sectional view of Section A-A in Fig. 1.
Fig. 3 is this planetary structure sectional view.
In figure, 1, gear；1a, axis hole；1b, plane；1c, spherical；2nd, external gear teeth；3rd, oil groove；4th, oil groove is crossed；5、
Chamfering；6th, spigot surface.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figure 1, Figure 2 and Figure 3, this planetary gear includes the gear 1 with axis hole 1a, is set in gear 1
Have an external gear teeth 2 for favouring the centerline direction of gear 1, the end face of gear 1 is plane 1b, gear 1 it is another
End face is spherical 1c, if radially offering the equally distributed oil groove 3 in arterial highway on the spherical 1c of gear 1, oil groove 3
The inner is communicated in axis hole 1a, and the outer end of oil groove 3 is communicated in the outside portion of external gear teeth 2, and the inner of oil groove 3 and outer end are in closing in shape
To cause the inner groove width with outer end of oil groove 3 to be respectively less than the groove width at the middle part of oil groove 3.
Further describe in detail, axis hole 1a inwall axially offers one with oil groove 3 one-to-one oil groove 4, excessively oil groove 4 excessively
End is communicated in the inner of corresponding oil groove 3, and the other end for crossing oil groove 4 is communicated in the plane 1b of gear 1.Oil groove 3 and excessively oily
The cell wall section of groove 4 is in arc surfaced, oil groove 3 and to cross the quantity of oil groove 4 be three in the present embodiment.
For engaged transmission process stabilization, the flank profil of external gear teeth 2 is provided with chamfering 5；For the ease of installation, axis hole 1a both ends
Aperture is equipped with the spigot surface 6 in enlarging shape, and the angle of spigot surface 6 and the axis of gear 1 is 45 ° in the present embodiment；In order to
This planetary gear surfaces externally and internally is respectively provided with high rigidity and good wearability, and the surfaces externally and internally of gear 1 is respectively provided with thickness and is
0.8-1.2mm carburized layer, the thickness of carburized layer is 1.0mm in the present embodiment.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
1. a kind of planetary gear, including with axis hole（1a）Gear（1）, described gear（1）It is provided with and tilts
In gear（1）The external gear teeth of centerline direction（2）, gear（1）End face be plane（1b）, gear（1）
Other end be spherical（1c）, it is characterised in that described gear（1）Spherical（1c）If upper radial direction offers
The equally distributed oil groove in arterial highway（3）, described oil groove（3）The inner be communicated in axis hole（1a）, oil groove（3）Outer end be communicated in it is outer
The gear teeth（2）Outside portion, described oil groove（3）The inner and outer end in closing in shape to cause oil groove（3）It is inner and outer end
Groove width is respectively less than oil groove（3）The groove width at middle part.
A kind of 2. planetary gear according to claim 1, it is characterised in that described axis hole（1a）Inwall axially open up
Have and oil groove（3）It is one-to-one to cross oil groove（4）, described crosses oil groove（4）One end be communicated in corresponding oil groove（3）It is interior
End, cross oil groove（4）The other end be communicated in gear（1）Plane（1b）.
A kind of 3. planetary gear according to claim 2, it is characterised in that described oil groove（3）With oil groove excessively（4）Groove
Wall section is in arc surfaced.
A kind of 4. planetary gear according to claim 3, it is characterised in that described oil groove（3）With oil groove excessively（4）Number
Amount is three.
5. according to a kind of planetary gear described in any one of Claims 1-4, it is characterised in that described external gear teeth（2）'s
Flank profil is provided with chamfering（5）.
A kind of 6. planetary gear according to claim 5, it is characterised in that described axis hole（1a）Both ends aperture be all provided with
There is the spigot surface in enlarging shape（6）.
A kind of 7. planetary gear according to claim 6, it is characterised in that described gear（1）Surfaces externally and internally
It is respectively provided with the carburized layer that thickness is 0.8-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721004164.7U CN207034153U (en) | 2017-08-11 | 2017-08-11 | A kind of planetary gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721004164.7U CN207034153U (en) | 2017-08-11 | 2017-08-11 | A kind of planetary gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207034153U true CN207034153U (en) | 2018-02-23 |
Family
ID=61487322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721004164.7U Expired - Fee Related CN207034153U (en) | 2017-08-11 | 2017-08-11 | A kind of planetary gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207034153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443458A (en) * | 2018-03-26 | 2018-08-24 | 徐州锦程行星传动有限公司 | Automobile differential planetary gear |
| US11969870B2 (en) | 2018-11-13 | 2024-04-30 | Hilti Akiengesellschaft | Portable power tool |
-
2017
- 2017-08-11 CN CN201721004164.7U patent/CN207034153U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443458A (en) * | 2018-03-26 | 2018-08-24 | 徐州锦程行星传动有限公司 | Automobile differential planetary gear |
| CN108443458B (en) * | 2018-03-26 | 2020-11-17 | 徐州锦程行星传动有限公司 | Planetary gear for automobile differential |
| US11969870B2 (en) | 2018-11-13 | 2024-04-30 | Hilti Akiengesellschaft | Portable power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20190811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |