CN220378849U - Oil return structure of output shaft - Google Patents
Oil return structure of output shaft Download PDFInfo
- Publication number
- CN220378849U CN220378849U CN202322025497.XU CN202322025497U CN220378849U CN 220378849 U CN220378849 U CN 220378849U CN 202322025497 U CN202322025497 U CN 202322025497U CN 220378849 U CN220378849 U CN 220378849U
- Authority
- CN
- China
- Prior art keywords
- output shaft
- shaft
- sun gear
- oil
- guide shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003921 oil Substances 0.000 abstract description 26
- 239000010687 lubricating oil Substances 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 moisture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- General Details Of Gearings (AREA)
Abstract
The utility model relates to the technical field of wind driven generators, in particular to an output shaft oil return structure, which comprises an output shaft and a sun gear shaft which are coaxially arranged, wherein a spline gap is formed between the output shaft and the sun gear shaft, the output shaft further comprises a guide shaft, an oil storage groove is formed between the guide shaft and the sun gear shaft, a seal is radially assembled between the guide shaft and the output shaft, an arc groove and an inclined hole which are mutually communicated are arranged in the output shaft, two ends of the inclined hole are respectively communicated with the arc groove and the radial hole, the other end of the radial hole is communicated with an oil tank, and lubricating oil and impurities flowing in a gear box can be smoothly led back to the oil tank through the arc groove, the inclined hole and the radial hole which are formed in the output shaft in sequence, so that the problem of frequent oil leakage of the shaft end of the output shaft is solved.
Description
Technical Field
The utility model relates to the technical field of wind driven generators, in particular to an oil return structure of an output shaft.
Background
The wind power generator is an electric power device for converting wind energy into mechanical work, the mechanical work drives a rotor to rotate and finally outputs alternating current, wherein a gear box is an important component part of the wind power generator, the product reliability of the electric power device is related to the safe operation of a wind power generator set, a plurality of gear boxes are usually applied in the wind power generator, and the wind power generator set requires the gear box to be as compact as possible along with the rapid development of the wind power industry, so that more and more gear boxes are arranged coaxially with an input shaft and an output shaft in the prior art, and a sun gear shaft serving as the input shaft is built in the internal structure of the output shaft, so that the use of the sun gear shaft is increasingly common.
In order to reduce the resistance between friction parts, a large amount of lubricating oil is injected into the gear box body, and meanwhile, the effects of rust prevention and heat dissipation of the gears and the bearings can be achieved. However, after injecting the lubricating oil into the gearbox casing, the lubricating oil is transferred to each operating part of the gearbox through an oil way, the lubricating oil flowing into the inner hole of the output shaft easily leaks in the operation process, and the sealing structure is generally adopted in the prior art to prevent the seepage of the lubricating oil, so that the sealing has a larger influence on the service life of gears and bearings of the gearbox, and can prevent the invasion of external dust, moisture, metal powder and other pollutants and simultaneously prevent the leakage of the lubricating oil.
Disclosure of Invention
The utility model provides an oil return structure of an output shaft, which can solve the technical problem of more oil leakage phenomena at the end of the output shaft in the prior art.
The application provides the following technical scheme:
the utility model provides an output shaft oil return structure, includes coaxial output shaft and the sun gear axle that sets up, form the spline clearance between output shaft and the sun gear axle, still include the guide shaft, form the oil storage tank between guide shaft and the sun gear axle, radially be equipped with the seal between guide shaft and the output shaft, be provided with arc wall and the inclined hole of mutual intercommunication in the output shaft, the both ends in inclined hole communicate respectively to arc wall and radial hole, the other end in radial hole communicates to the oil tank.
The beneficial effects are that: in the coaxial structure of output shaft and sun gear, through setting up radial hole and the inclined hole that is used for transmitting lubricating oil on the output shaft, lubricating oil can circulate to the oil storage tank between guide shaft and the sun gear axle, the epaxial arc wall of output, radial hole and inclined hole in proper order by the spline clearance between output shaft and the sun gear axle, and the centrifugal force that the higher rotational speed of output shaft formed in the gear box operation of reuse is smooth with lubricating oil and the impurity that wraps up in from the inside back oil tank of guide shaft to reach the purpose that prevents lubricating oil from oozing in the sealed of assembly under the guide shaft.
Further, a sun gear and a sun gear baffle plate coaxially arranged with the sun gear are fixed at the end part of the sun gear shaft, and an oil storage tank is formed between the sun gear baffle plate and the guide shaft.
The beneficial effects are that: the arrangement of the sun gear baffle can prevent the situation that the sun gear shaft can axially move in the process of telling rotation for a long time, so that the abrasion of equipment is reduced, and the service life of the equipment is prolonged.
Further, the seal is a labyrinth seal.
The beneficial effects are that: the labyrinth seal belongs to non-contact seal, is particularly suitable for high-rotation-speed equipment including wind power gearboxes, and has the advantages of simple maintenance and long service life.
Further, a bearing is mounted on the guide shaft at an end near the oil reservoir.
The beneficial effects are that: the bearings are used to support the rotation of the guide shaft and reduce friction of the guide shaft during operation.
Drawings
FIG. 1 is a cross-sectional view of a first embodiment of an output shaft oil return structure of the present utility model;
Detailed Description
The following is a further detailed description of the embodiments:
the labels in the drawings of this specification include: the device comprises an output shaft 1, a sun gear shaft 2, a spline gap 3, a guide shaft 4, an arc-shaped groove 5, a labyrinth seal 6, a bearing 7, a sun gear baffle 8 and a radial hole 9.
Example 1
As shown in fig. 1, an output shaft oil return structure comprises an output shaft 1 and a sun gear shaft 2 which are coaxially arranged, wherein the output shaft 1 and the sun gear shaft 2 are connected through a spline to form a spline gap 3, the output shaft further comprises a guide shaft 4 and an oil storage groove 5, the oil storage groove 5 is arranged between the sun gear shaft 2 and the guide shaft 4, a bearing 7 is arranged at one end, close to the oil storage groove 5, of the guide shaft 4, a sun gear and a sun gear baffle 8 which is coaxially arranged with the sun gear are fixed at the end of the sun gear shaft 2, the oil storage groove 5 is formed between the sun gear baffle 8 and the guide shaft 4, a labyrinth seal 6 is radially arranged at a gap between the guide shaft 4 and the output shaft 1, an arc groove 10, a radial hole 9 and an inclined hole which are mutually communicated are arranged in the output shaft 1, two ends of the inclined hole are respectively communicated with the arc groove 10 and the radial hole 9, and the other end of the radial hole 9 is communicated with an oil tank.
In the actual operation process, lubricating oil can circulate to the oil storage tank 5 between the guide shaft 4 and the sun gear shaft 2, the arc-shaped groove 10, the inclined hole and the radial hole 9 on the output shaft 1 in sequence through the spline gap 3 between the output shaft 1 and the sun gear shaft 2, and then the lubricating oil and the wrapped impurities are smoothly guided back to the oil tank from the inside of the output shaft 1 by utilizing the centrifugal force formed by the higher rotating speed of the output shaft 1 in the operation process of the gearbox, so that the purpose of preventing the lubricating oil from seeping out from the labyrinth seal 6 assembled under the guide shaft 4 is achieved.
The above is merely an embodiment of the present utility model, and the present utility model is not limited to the field of the present embodiment, but the specific structure and characteristics of the present utility model are not described in detail. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (4)
1. The utility model provides an output shaft oil return structure, includes coaxial output shaft and the sun gear axle that sets up, form spline clearance, its characterized in that between output shaft and the sun gear axle: the oil storage device comprises an oil storage tank, and is characterized by further comprising a guide shaft, wherein an oil storage tank is formed between the guide shaft and a sun gear shaft, a seal is radially assembled between the guide shaft and an output shaft, an arc-shaped groove and an inclined hole which are mutually communicated are arranged in the output shaft, two ends of the inclined hole are respectively communicated with the arc-shaped groove and the radial hole, and the other end of the radial hole is communicated with the oil tank.
2. An output shaft oil return structure according to claim 1, wherein: the end part of the sun gear shaft is fixedly provided with a sun gear and a sun gear baffle plate which is coaxially arranged with the sun gear, and an oil storage tank is formed between the sun gear baffle plate and the guide shaft.
3. An output shaft oil return structure according to claim 2, characterized in that: the seal adopts labyrinth seal.
4. An output shaft oil return structure according to claim 3, wherein: a bearing is mounted on the guide shaft at an end near the oil reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322025497.XU CN220378849U (en) | 2023-07-28 | 2023-07-28 | Oil return structure of output shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322025497.XU CN220378849U (en) | 2023-07-28 | 2023-07-28 | Oil return structure of output shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220378849U true CN220378849U (en) | 2024-01-23 |
Family
ID=89568251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322025497.XU Active CN220378849U (en) | 2023-07-28 | 2023-07-28 | Oil return structure of output shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220378849U (en) |
-
2023
- 2023-07-28 CN CN202322025497.XU patent/CN220378849U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |