CN206439380U - Oil supply structure under a kind of high speed shaft carrier ring - Google Patents
Oil supply structure under a kind of high speed shaft carrier ring Download PDFInfo
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- CN206439380U CN206439380U CN201621358560.5U CN201621358560U CN206439380U CN 206439380 U CN206439380 U CN 206439380U CN 201621358560 U CN201621358560 U CN 201621358560U CN 206439380 U CN206439380 U CN 206439380U
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- inner ring
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Abstract
The utility model is related to oil supply structure under a kind of high speed shaft carrier ring, and described bearing includes ball bearing and needle bearing, and ball bearing and needle bearing are sleeved in hollow shaft；The inner ring of needle bearing is provided with oil-through-hole, and inner ring is fixed in hollow shaft；Ball bearing inner ring is fixed in hollow shaft, and ball bearing inner ring is there is annular gap in the middle of a point half formula inner ring, half formula inner ring；It is provided with cavity in a plurality of asphalt channel, hollow shaft in hollow shaft to connect by asphalt channel with the oil-through-hole of needle bearing inner ring, cavity is connected with the annular gap of ball bearing inner ring by asphalt channel in hollow shaft.
Description
Technical field
The utility model is related to oil supply structure under a kind of high speed shaft carrier ring, and the present apparatus is applied to aero gas turbine engine
Central transmission driven wheel of differential lubricates and cooling fuel feeding.
Background technology
Aviation send out gas turbine motivation central transmission driven wheel of differential spring bearing because its working speed is high, load is big,
The features such as operating mode is complicated, it is desirable to provide efficient, reliable and stable lubrication and cooling, reduction bearing friction abrasion, takes away axle in time
Hold the heat produced in the course of work, two of the outer aviation gas turbine engine central driven transmission bevel gear of Current Domestic
Spring bearing is generally using injection lubrication system form.
With aero-engine rotating speed more and more higher, annex extraction power is increasing, the lubricating oil demand of driven pulley bearing
Amount is also being continuously increased, and is now existed with injection lubricating system and is received the low defect of oily efficiency, limits fuel delivery, can cause driven pulley
Spring bearing lubrication is insufficient, it is impossible to takes away the heat produced by during bearing working in time, ultimately results in bearing and use the longevity
Life reduction is damaged in the even short time, while increasing the design difficulty of engine oil system.Driven pulley bearing is used at this stage
Injection lubrication be generally by retainer guide fuel feeding, such lubrication to spray lubricating oil drop point site (sprays lubricating place
The gap in retainer and bearing internal external ring must be fallen) require to be compared harsh, it is desirable to housing is installed at nozzle and nozzle processing
Precision is high, adds the difficulty of processing of nozzle and housing, while also increasing assembly difficulty (will carry out nozzle injection before assembling
Direction and flow inspection --- cross gap and check)；During injection lubrication, lubricating oil is beaten will necessarily cause lubricating oil to sputter on inner and outer ring,
Cause lubricating oil to fully enter bearing, reduce lubricating efficiency.Injection lubrication system sprays in order to which lubricating oil is transported into bearing
Point makes central transmission shell structure complicated, increases shell cast and machine plus difficulty, it is necessary to arrange complicated oil pathway on housing
Greatly, while also increasing case weight.Injection lubrication system is to carry out fuel feeding from the side of bearing, may result in the non-of bearing
Oil-feed sideslip oil supply amount is not enough, causes retainer to be worn and torn with inner and outer ring, radiate insufficient etc., while abrasive dust is possible to enter
Bearing, causes bearing wear to aggravate.Accordingly, it is considered to designed product requirement fuel feeding efficiency high, fuel delivery is big, fuel feeding is uniform,
It is simple in construction, stable and reliable in work, process and assemble efficient and convenient.
The content of the invention
The purpose of this utility model：
In order to provide efficient, reliable and stable to aero gas turbine engine central transmission driven wheel of differential spring bearing
Lubrication and cooling, the utility model provide oil supply structure under a kind of driven wheel of differential ring, pass through oil supply structure fuel feeding side under ring
Formula can greatly improve bearing and receive oily efficiency, simplify central transmission shell structure, reduce parts count, reduction central transmission housing
Processing and component assembly difficulty, mitigation central transmission case weight.
The technical solution of the utility model：
Oil supply structure under a kind of high speed shaft carrier ring is provided, described bearing includes ball bearing and needle bearing, and ball
Bearing and needle bearing are sleeved in hollow shaft；The inner ring of needle bearing is provided with oil-through-hole, and inner ring is fixed in hollow shaft；
Ball bearing inner ring is fixed in hollow shaft, and ball bearing inner ring is in the presence of between annular in the middle of a point half formula inner ring, half formula inner ring
Gap；The oil-through-hole that cavity and needle bearing inner ring in a plurality of asphalt channel, hollow shaft are provided with hollow shaft is connected by asphalt channel
Logical, cavity is connected with the annular gap of ball bearing inner ring by asphalt channel in hollow shaft.
Wherein, it is into multiple annular housing structures by driven wheel of differential embedded SMA actuators to receive oily structure；In the course of work, work as cunning
Oil spurts enters after driven pulley annular chamber, and the lubricating oil for being ejected into several chambers above is supplied to driven wheel of differential to justify under the action of the centrifugal force
Post roller bearing, the lubricating oil for being ejected into following several chambers gets rid of what is constituted into driven pulley and spacer sleeve, bearing under the action of the centrifugal force
Path is supplied to ball bearing.And oil supply structure is to receive oil by the nozzle on central transmission housing is directly multiple to driven pulley
Chamber oil spout；The oil supply structure can also be driven spoke plate fuel feeding, play cooling down effect.
Oil circuit under the ring on the fuel feeding partial cancellation of feed lubrication structure housing toward fuel feeding at driven pulley two bearings, letter
Change shell structure, alleviate case weight；Meanwhile, the status requirement of the lubricating oil drop point of nozzle loosens, it is not necessary to carry out nozzle
Gap inspection is crossed, as long as ensureing that respective nozzle total flow and visual inspection oil spout point fall on corresponding collection tank position, this is just
The position degree requirement of nozzle bore is reduced, difficulty of processing is significantly reduced, while the adjustable range increase that nozzle is installed, makes assembling
Greatly simplify；It is that lubricating oil is delivered into bearing working face using centrifugal action to receive oily structure, and tool is used on rev-happy engine
There is greater advantage, the oily efficiency of receipts can be effectively improved；Receipts oil structure is that oil-feed port is in bearing roller by bearing inner race fuel feeding
Upper and lower ends, can effectively lubricate retainer and inner and outer ring and inner and outer ring and roller, it is to avoid bearing partial lubrication is bad
Caused abrasion, will effectively improve bearing service life, and this enters structure can will wear and tear what is produced using lubricating oil centrifugal force
Abrasive dust is taken away, it is to avoid the secondary damage of bearing.
The beneficial effects of the utility model：
Lubricating oil is supplied to ball bearing and cylinder roller bearing by the utility model by centrifugal action, is effectively increased
Receive oily efficiency；The lubricating quality of driven pulley bearing is improved, the abrasion of bearing can be effectively reduced, the service life of bearing is improved,
Reduce bearing expense；The use of lubrication system can simplify the structure of central transmission housing under ring, reduce the manufacture difficulty of housing,
Reduce processing and manufacturing cost；Assembly difficulty, effectively save installation time can be reduced.Therefore the utility model is in high rotating speed aviation
Had broad application prospects on engine, with larger use value.
Brief description of the drawings
Fig. 1 is that central transmission driven wheel of differential sprays lubrication system schematic diagram；
Fig. 2 is feed lubrication structural representation under central transmission driven wheel of differential ring；
Wherein, lubricating nozzle, 2- central transmissions driven pulley, 3- injections lubricating nozzle, 4- cylinder roller bearings, 5- under 1- rings
Ball bearing.
Embodiment
Below by embodiment, the utility model is described in further detail：
Oil supply structure under a kind of high speed shaft carrier ring is provided, described bearing includes ball bearing and needle bearing, and ball
Bearing and needle bearing are sleeved in hollow shaft；The inner ring of needle bearing is provided with oil-through-hole, and inner ring is fixed in hollow shaft；
Ball bearing inner ring is fixed in hollow shaft, and ball bearing inner ring is in the presence of between annular in the middle of a point half formula inner ring, half formula inner ring
Gap；The oil-through-hole that cavity and needle bearing inner ring in a plurality of asphalt channel, hollow shaft are provided with hollow shaft is connected by asphalt channel
Logical, cavity is connected with the annular gap of ball bearing inner ring by asphalt channel in hollow shaft.
Claims (1)
1. oil supply structure under a kind of high speed shaft carrier ring, described bearing includes ball bearing and needle bearing, and ball bearing and
Needle bearing is sleeved in hollow shaft；The inner ring of needle bearing is provided with oil-through-hole, and inner ring is fixed in hollow shaft；Ball axle
Inner ring is held to be fixed in hollow shaft, and ball bearing inner ring is there is annular gap in the middle of a point half formula inner ring, half formula inner ring；It is hollow
Cavity in a plurality of asphalt channel, hollow shaft is provided with axle to connect by asphalt channel with the oil-through-hole of needle bearing inner ring, it is hollow
Cavity is connected with the annular gap of ball bearing inner ring by asphalt channel in axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621358560.5U CN206439380U (en) | 2016-12-12 | 2016-12-12 | Oil supply structure under a kind of high speed shaft carrier ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621358560.5U CN206439380U (en) | 2016-12-12 | 2016-12-12 | Oil supply structure under a kind of high speed shaft carrier ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206439380U true CN206439380U (en) | 2017-08-25 |
Family
ID=59648071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621358560.5U Active CN206439380U (en) | 2016-12-12 | 2016-12-12 | Oil supply structure under a kind of high speed shaft carrier ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206439380U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555846A (en) * | 2018-11-19 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of cooling and lubricating structure of aero-engine central cone transmission mechanism |
-
2016
- 2016-12-12 CN CN201621358560.5U patent/CN206439380U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555846A (en) * | 2018-11-19 | 2019-04-02 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of cooling and lubricating structure of aero-engine central cone transmission mechanism |
| CN109555846B (en) * | 2018-11-19 | 2021-08-24 | 中国航发沈阳黎明航空发动机有限责任公司 | Cooling and lubricating structure of central cone transmission mechanism of aircraft engine |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 610500 Xindu Xuefu Road, Xindu District, Chengdu, Sichuan Patentee after: AECC SICHUAN GAS TURBINE Research Institute Address before: 621703 P.O. Box 305, Mianyang City, Sichuan Province Patentee before: CHINA GAS TURBINE EST |