CN109630275B - Lubricated oil supply structure of compact structure's transmission bearing - Google Patents
Lubricated oil supply structure of compact structure's transmission bearing Download PDFInfo
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- CN109630275B CN109630275B CN201811464240.1A CN201811464240A CN109630275B CN 109630275 B CN109630275 B CN 109630275B CN 201811464240 A CN201811464240 A CN 201811464240A CN 109630275 B CN109630275 B CN 109630275B
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- oil
- oil supply
- bevel gear
- compact
- bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a transmission bearing lubricating oil supply structure with a compact structure, which comprises an oil injection hole arranged on a spiral oil through groove in a generator, wherein the oil injection hole is opposite to a bevel gear, the bevel gear is provided with a plurality of penetrating oil through holes, and lubricating oil is pumped to a ball bearing to be lubricated through the oil through holes by utilizing the centrifugal force generated by the rotation of the bevel gear. The bearing lubrication device is simple in structure, fully utilizes the original lubrication system pipeline, does not increase new parts, achieves the purpose of improving the lubrication problem of the short-life bearing, and achieves the design target through a material object test; at present, the achievement is already applied to the turbofan engine for the unmanned aerial vehicle, and can be popularized and applied to engines of the same type.
Description
Technical Field
The invention belongs to the technical field of bearing lubrication, and relates to a transmission bearing lubricating and oil supplying structure with a compact structure.
Background
In the turbofan engine, limited by the structure, the transmission bearing can realize oil mist lubrication theoretically, but the actual lubrication effect is not ideal, and the service life is short.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: the transmission bearing lubricating oil supply structure is compact in structure, and can be adapted to the internal compact structure of the turbofan engine and achieve an efficient oil spraying and lubricating function.
(II) technical scheme
In order to solve the technical problem, the invention provides a transmission bearing lubricating oil supply structure with a compact structure, which comprises an oil injection hole 2 arranged on a spiral oil through groove 3 in a generator 1, wherein the oil injection hole 2 is opposite to a bevel gear 4, the bevel gear 4 is provided with a plurality of penetrating oil through holes 5, and lubricating oil is pumped to a ball bearing 6 to be lubricated through the oil through holes 5 by using the centrifugal force generated by the rotation of the bevel gear 4.
(III) advantageous effects
The transmission bearing lubricating oil supply structure with the compact structure provided by the technical scheme has a simple structure, fully utilizes the original lubricating system pipeline, does not increase new parts, realizes the purpose of improving the lubricating problem of the bearing with the short service life, and achieves the design target through a material object test; at present, the achievement is already applied to the turbofan engine for the unmanned aerial vehicle, and can be popularized and applied to engines of the same type.
Drawings
Fig. 1 is a layout diagram of a transmission bearing lubrication oil supply structure with a compact structure.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
In order to improve the lubricating condition of the bearing and prolong the service life, an oil supply pipe needs to be led out according to the design idea of the traditional oil supply structure, and the oil supply pipe is difficult to realize in a narrow space. The invention designs a transmission bearing lubricating oil supply structure with compact structure by using the existing pipeline layout of the lubricating system of the device.
In the transmission bearing lubricating oil supply structure of the embodiment, in a compact structure, by utilizing the existing pipeline layout of the lubricating system of the device, an oil supply branch is not added, new parts are not added, and the lubricating oil supply of the target bearing is realized through the centrifugal action of the axis.
Specifically, referring to fig. 1, the transmission bearing lubrication oil supply structure with a compact structure of the embodiment makes full use of the assembly space relationship between the generator 1 and the transmission device, the oil injection hole 2 is arranged on the spiral oil through groove 3 inside the generator 1, the oil injection hole 2 faces the bevel gear 4, the bevel gear 4 is provided with a plurality of penetrating oil through holes 5, and the centrifugal force generated by the rotation of the bevel gear 4 pumps the lubricating oil to the ball bearing 6 to be lubricated through the oil through holes 5.
The diameter of the oil spray hole 2 can be adjusted according to the requirement, and can be set between 0.5mm and 1mm, preferably 0.8 mm.
The oil through holes 5 are four and are evenly distributed. The diameter of the oil through hole 5 can be adjusted according to requirements and can be set between 0.5mm and 1mm, and 0.8mm is preferred.
The structure of the invention can save a special oil supply pipe, and achieve the purposes of no addition of new parts and compact structure; and the diameter of the oil through hole is smaller, and the flow resistance characteristic of the original lubricating pipeline is not influenced.
Some unmanned aerial vehicle engine transmission bearing adopts this achievement, has improved the lubricated problem of short-life bearing, by less than 50h with working life, improves to more than 300 h.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a lubricated oil feeding structure of transmission bearing of compact structure, its characterized in that includes nozzle opening (2) that sets up on generator (1) inside spiral oil groove (3), and nozzle opening (2) just are to the position of bevel gear (4), have seted up a plurality of penetrability oil through holes (5) on bevel gear (4), utilize the rotatory centrifugal force of bevel gear (4) to pass through oil through holes (5) with the lubricating oil pump send to treat lubricated ball bearing (6).
2. The drive bearing lubrication oil supply structure of compact structure as claimed in claim 1, wherein the diameter of the oil injection hole (2) is set between 0.5mm and 1 mm.
3. The drive bearing lubrication oil supply structure of claim 2, which is compact in structure, wherein the diameter of the oil through hole (5) is set between 0.5mm and 1 mm.
4. The drive bearing lubrication oil supply structure of compact structure according to claim 3, wherein the diameter of the oil injection hole (2) is set to 0.8 mm.
5. The compact drive bearing lubrication oil supply structure according to claim 4, wherein the diameter of the oil passing hole (5) is set to 0.8 mm.
6. The drive bearing lubrication oil supply structure of compact structure as claimed in claim 5, wherein said oil passing holes (5) are provided in four, evenly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464240.1A CN109630275B (en) | 2018-12-03 | 2018-12-03 | Lubricated oil supply structure of compact structure's transmission bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464240.1A CN109630275B (en) | 2018-12-03 | 2018-12-03 | Lubricated oil supply structure of compact structure's transmission bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630275A CN109630275A (en) | 2019-04-16 |
| CN109630275B true CN109630275B (en) | 2021-01-08 |
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ID=66070829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811464240.1A Active CN109630275B (en) | 2018-12-03 | 2018-12-03 | Lubricated oil supply structure of compact structure's transmission bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN109630275B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701279A (en) * | 2019-10-22 | 2020-01-17 | 北京动力机械研究所 | Bevel gear design method of transmission system beneficial to passing of lubricating oil |
| CN110792731A (en) * | 2019-10-22 | 2020-02-14 | 北京动力机械研究所 | Central transmission structure for long-life small turbofan engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2144995C1 (en) * | 1998-12-02 | 2000-01-27 | Открытое Акционерное Общество "А. Люлька-Сатурн" | Gas-turbine engine support |
| CN202182169U (en) * | 2011-05-31 | 2012-04-04 | 长城汽车股份有限公司 | Circulating lubrication oil channel in automobile transmission system |
| CN102829167B (en) * | 2011-06-18 | 2014-05-07 | 南车戚墅堰机车车辆工艺研究所有限公司 | Planetary external gearing forced lubrication device |
| CN202194728U (en) * | 2011-07-27 | 2012-04-18 | 中国航空动力机械研究所 | Accessory case transmission and aircraft engine with same |
| CN205136527U (en) * | 2015-11-12 | 2016-04-06 | 浙江联合齿轮有限公司 | Differential side gear |
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2018
- 2018-12-03 CN CN201811464240.1A patent/CN109630275B/en active Active
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| CN109630275A (en) | 2019-04-16 |
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