CN211778462U - Planet wheel shaft and planet gear mechanism - Google Patents
Planet wheel shaft and planet gear mechanism Download PDFInfo
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- CN211778462U CN211778462U CN201922365614.0U CN201922365614U CN211778462U CN 211778462 U CN211778462 U CN 211778462U CN 201922365614 U CN201922365614 U CN 201922365614U CN 211778462 U CN211778462 U CN 211778462U
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Abstract
The utility model discloses a planet wheel axle and planetary gear mechanism relates to mechanical transmission accessory technical field, including the axis body, the outer periphery complex of axis body has the alloy to ooze the layer altogether, has seted up the lubrication groove on the axis body, and the lubrication groove runs through the outer periphery that the alloy oozes the layer altogether, is equipped with the lubrication channel who is linked together with the lubrication groove in the axis body. The utility model provides a current planetary gear mechanism problem with high costs.
Description
Technical Field
The utility model belongs to the technical field of mechanical transmission accessory technique and specifically relates to a planet wheel axle and planetary gear mechanism.
Background
The conventional planetary gear mechanism is provided with a bearing between a planetary gear shaft and a planetary gear, and a lubricating passage for lubricating the bearing is provided in the planetary gear bearing, and the bearing is usually provided with a needle bearing or a cylindrical roller bearing. In order to solve the problems, the existing planetary gear mechanism adopts a bearing bush made of copper materials to replace a bearing, the bearing bush has large bearing capacity, long service life and small radial size, the bearing bush is sleeved on a planetary gear shaft and is positioned between the inner hole wall of the planetary gear and the planetary gear shaft, and two ends of the bearing bush are propped against a planet carrier through gaskets; because the copper material has self-lubricating effect, the surface of the planet gear shaft is not provided with a lubricating oil groove usually. The planetary gear mechanism with such a structure has the following disadvantages: 1. the copper material is expensive, the bearing bush is not easy to deform only by needing larger thickness, and the material cost is high; 2. the outer cylindrical surface and the inner hole of the bearing bush have higher precision requirements, and the bearing bush is easy to deform in the machining process, complex to machine, multiple in working procedures and high in machining cost; 3. and after the bearing bush fails, the maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a planet wheel axle and planetary gear mechanism, this kind of shaft and mechanism can solve current planetary gear mechanism problem with high costs.
In order to solve the above problem, the utility model discloses a technical scheme is: the planet wheel shaft comprises a shaft body, wherein an alloy co-permeation layer is compounded on the outer circumferential surface of the shaft body, a lubricating oil groove is formed in the shaft body and penetrates through the outer circumferential surface of the alloy co-permeation layer, and a lubricating channel communicated with the lubricating oil groove is formed in the shaft body.
In the above planetary gear shaft technical solution, a more specific technical solution may also be: the alloy co-permeation layer comprises a white bright layer and a diffusion layer, the white bright layer is located on the outer surface of the shaft body, the thickness of the white bright layer is larger than 15 mu m, and the thickness of the diffusion layer is larger than 150 mu m.
Further, the depth of the lubricating oil groove is 0.3-1 mm.
Further, the lubricating oil groove is a spiral groove, and the spiral groove extends from one end of the alloy co-permeation layer to the other end of the alloy co-permeation layer.
Further, the pitch range of the spiral groove is L/2-L mm, wherein L is the length of the alloy co-penetration layer.
The utility model discloses a another technical scheme, a planetary gear mechanism is equipped with above-mentioned planet wheel axle and planetary gear, the outer periphery of planet wheel axle is clearance fit with planetary gear's interior pore wall, planetary gear's interior pore wall with the lubrication groove is relative.
Further, the clearance range between the planetary wheel shaft and the planetary gear is 0.05-0.15 mm.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
1. the cost of the planetary gear mechanism is reduced, and the planetary gear mechanism is small in radial size and compact in structure; the alloy co-permeation layer is compounded on the surface of the planet wheel shaft, so that the hard force, the wear resistance and the bearing capacity of the wheel shaft are improved, and the co-permeation layer is directly compounded on the wheel shaft, so that the wheel shaft is not easy to deform, the alloy thickness can be reduced, and the cost is reduced; a lubricating oil groove penetrating through the outer circumferential surface of the alloy co-permeation layer is arranged to ensure that the planetary gear and the wheel shaft are effectively lubricated; and the processing is relatively simple, and the co-permeation layer is not easy to lose efficacy due to the wear-resisting property and the lubricating effect, so that the cost is reduced.
2. The thickness ranges of the white layer and the diffusion layer of the alloy co-permeation layer are limited, and the wear resistance and the bearing capacity of the planet wheel shaft can be obviously improved.
3. The depth range of the lubricating oil groove can effectively lubricate the wheel shaft and the gear, and the strength of the wheel shaft can be guaranteed.
4. The lubricating oil groove is a spiral groove, so that the axial and radial lubrication of the wheel shaft can be guaranteed; the spiral pitch of the spiral groove can ensure that the planet gear and the wheel shaft have enough contact area, and the strength of the wheel shaft is ensured.
5. The planetary gear mechanism adopts the planetary gear shaft with the structure, the clearance range between the wheel shaft and the planetary gear is limited, and sufficient lubrication and flexible rotation can be obtained; the parts such as the bearing, the bearing bush and the like are removed, the cost is low, and the assembly is simple.
Drawings
Fig. 1 is a schematic structural view of the embodiment of the planet axle.
FIG. 2 is a schematic structural diagram of an embodiment of the planetary gear mechanism.
Reference numerals in the drawings indicate: 1. a planetary wheel shaft; 1-1, a positioning section; 1-2, a support section; 1-21, alloy co-infiltration layer; 1-22 parts of lubricating oil groove; 1-3, blind holes; 1-4, connecting holes; 1-5, positioning a through hole; 2. a planet carrier; 2-1, shaft hole positioning seats; 3. a planetary gear; 4. a gasket; 5. and a positioning pin.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
the body of the planet wheel shaft 1 shown in the figures 1 and 2 comprises a positioning section 1-1 and a supporting section 1-2, the outer diameter of the positioning section 1-1 is smaller than the outer diameter of the supporting section 1-2, the positioning section 1-1 is provided with a positioning through hole 1-5 along the radial direction, an alloy co-permeation layer 1-21 is compounded on the outer circumferential surface of the whole supporting section 1-2 on the planet wheel shaft 1, the alloy co-permeation process is a conventional process for loading metal ions while nitriding, the alloy co-permeation can form a diffusion layer permeating into the body and a white bright layer positioned on the surface, the thickness of the white bright layer in the embodiment is larger than 15 microns, and the thickness of the diffusion layer is larger than 150 microns. A lubricating oil groove 1-22 is formed in the supporting section 1-2, the lubricating oil groove 1-22 penetrates through the outer circumferential surface of the alloy co-permeation layer 1-21, the lubricating oil groove 1-22 in the embodiment is a spiral groove extending from one end of the supporting section 1-2 to the other end, the spiral groove penetrates through the alloy co-permeation layer 1-21 in the radial direction and the axial direction, and the outer circumferential surface of the alloy co-permeation layer 1-21 penetrates into the shaft body to a depth of 0.3-1 mm; the pitch range of the spiral groove is L/2-L mm, and L is the length of the alloy co-permeation layer. The inside of the planet wheel shaft 1 is provided with a lubricating channel communicated with a lubricating oil groove 1-22, the lubricating channel of the embodiment comprises a blind hole 1-3 and a connecting hole 1-4, the blind hole 1-3 extends from the free end of the supporting section 1-2 to the middle of the shaft body along the axis of the planet wheel shaft 1, and the blind hole 1-3 is communicated with the lubricating oil groove 1-22 through the connecting hole 1-4 which is radially arranged.
The planetary gear mechanism shown in fig. 2 adopts the planetary gear shaft 1, the supporting section 1-2 of the planetary gear shaft 1 is inserted into the shaft hole positioning seat 2-1 of the planetary gear carrier 2, and the end surface of the positioning section 1-1 of the planetary gear shaft 1 is abutted against the shaft hole positioning seat 2-1, so as to realize the axial positioning of the planetary gear shaft 1; the radial positioning of the planet wheel shaft 1 is realized by a positioning pin 5 which is connected with the planet wheel carrier 2 and the planet wheel shaft 1, the positioning pin 5 is inserted into a positioning through hole 1-5 of a positioning section 1-1 of the planet wheel shaft 1 from the outer wall of a shaft hole positioning seat 2-1, and the outer end of the positioning pin is completely hidden in the planet wheel carrier 2. The supporting section 1-2 is sleeved with a planetary gear 3, the outer circumferential surface of the supporting section 1-2 is in clearance fit with the inner hole wall of the planetary gear 3, and the clearance range is 0.05-0.15 mm. Two ends of the planetary gear 3 are respectively in clearance fit with the planet carrier 1 so as to axially position the planetary gear 3, and a gasket 4 is arranged between the planetary gear 3 and the shaft hole positioning seat 2-1.
This planet shaft 1 is in the axis body complex alloy layer 1-21 that oozes altogether, and the intermetallic compound tissue that the alloy oozes the formation altogether is more stable degree than ordinary structure, and wear resistance is better, can effectively improve the wearability, hardness, the intensity of planet wheel shaft 1, has assembled planetary gear mechanisms such as the reduction gear of this planet wheel shaft 1, can get rid of the axle bush, directly cooperates with planetary gear, has avoided the axle bush because the too big damage that causes of part assembly clearance that the extension that long-time atress arouses leads to, and has reduced the cost by a wide margin.
Claims (7)
1. A kind of planet wheel axle, including the axis body, characterized by: the outer periphery of the shaft body is compounded with an alloy co-permeation layer, a lubricating oil groove is formed in the shaft body and penetrates through the outer periphery of the alloy co-permeation layer, and a lubricating channel communicated with the lubricating oil groove is formed in the shaft body.
2. The planetary axle according to claim 1, wherein: the alloy co-permeation layer comprises a white bright layer and a diffusion layer, the white bright layer is located on the outer surface of the shaft body, the thickness of the white bright layer is larger than 15 mu m, and the thickness of the diffusion layer is larger than 150 mu m.
3. The planetary axle according to claim 2, wherein: the depth of the lubricating oil groove is 0.3-1 mm.
4. The planetary axle according to any one of claims 1 to 3, wherein: the lubricating oil groove is a spiral groove, and the spiral groove extends from one end of the alloy co-permeation layer to the other end of the alloy co-permeation layer.
5. The planetary axle according to claim 4, wherein: the pitch range of the spiral groove is L/2-L mm, wherein L is the length of the alloy co-permeation layer.
6. A planetary gear mechanism characterized by: the planetary gear shaft and the planetary gear according to any one of claims 1 to 5 are assembled, the outer circumferential surface of the planetary gear shaft is in clearance fit with the inner hole wall of the planetary gear, and the inner hole wall of the planetary gear is opposite to the lubricating oil groove.
7. The planetary gear mechanism as in claim 6, wherein: the clearance range between the planetary wheel shaft and the planetary gear is 0.05-0.15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922365614.0U CN211778462U (en) | 2019-12-25 | 2019-12-25 | Planet wheel shaft and planet gear mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922365614.0U CN211778462U (en) | 2019-12-25 | 2019-12-25 | Planet wheel shaft and planet gear mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211778462U true CN211778462U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922365614.0U Active CN211778462U (en) | 2019-12-25 | 2019-12-25 | Planet wheel shaft and planet gear mechanism |
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| CN (1) | CN211778462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776395A (en) * | 2021-01-22 | 2022-07-22 | 通用电气阿维奥有限责任公司 | Efficient epicyclic gear assembly for a turbomachine and method of manufacturing the same |
-
2019
- 2019-12-25 CN CN201922365614.0U patent/CN211778462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776395A (en) * | 2021-01-22 | 2022-07-22 | 通用电气阿维奥有限责任公司 | Efficient epicyclic gear assembly for a turbomachine and method of manufacturing the same |
| CN114776395B (en) * | 2021-01-22 | 2023-10-31 | 通用电气阿维奥有限责任公司 | Efficient epicyclic gear assembly for a turbomachine and method of manufacturing the same |
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