CN206582291U - Star gear transmission structure, planetary reduction gear and aero-engine - Google Patents
Star gear transmission structure, planetary reduction gear and aero-engine Download PDFInfo
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- CN206582291U CN206582291U CN201720252923.5U CN201720252923U CN206582291U CN 206582291 U CN206582291 U CN 206582291U CN 201720252923 U CN201720252923 U CN 201720252923U CN 206582291 U CN206582291 U CN 206582291U
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Abstract
The utility model is related to a kind of star gear transmission structure, planetary reduction gear and aero-engine, its culminant star gear transmission structure includes planet carrier (2), gear (4), bearing (3) and wheel shaft (1), gear and bearing are installed in planet carrier, wheel shaft is worn in the inner ring of planet carrier and bearing, wheel shaft is provided with cavity (14), the position of the solid section of wheel shaft and close outer wall, which is offered, draws oily passage (10), draw oily passage to connect with the oil transportation hole (12) on the inner ring for being arranged on bearing, so that lubricating oil is delivered into bearing and bearing is lubricated and cooled down.The utility model uses the lubricating system for drawing oil under ring, compared to beating introductory note oilhole on solid shafting, it is possible to decrease weight；Too many lubricating oil is filled compared in hollow shaft intracavitary, it is possible to reduce lubrication oil consumption；Compared to the scheme that mandrel and sealing gasket are set in hollow shaft intracavitary, it is possible to reduce parts and mating interface, and effectively reduce the leakage rate of lubricating oil.
Description
Technical field
The utility model is related to gear drive and decelerator technical field, more particularly to a kind of star gear transmission structure, OK
Star decelerator and aero-engine.
Background technology
Planet (containing star-like) decelerator is applied to the engine arts such as lower-powered helicopter widely, in big work(
The application in the fanjet field of rate also has the development and application of relative maturity abroad, and is still ground at home in primary
Study carefully the stage.For the engine of conventional configuration, the configuration engine it is a technical advantage that higher bypass ratio and Geng Gao
Propulsive efficiency.The design of the structure of planet (containing star-like) decelerator can mitigate the quality of decelerator, and without revolution motion
Star gear can reduce the load that bearing pin is supported to it.
Planet (containing star-like) decelerator applied to aero-engine generally requires the larger power and moment of torsion of transfer ratio, is
Intensity requirement is met, the drive mechanism of decelerator usually requires larger design size, and due to the space in aero-engine
Size is very limited, therefore the star gear train majority application sliding bearing technology on decelerator abroad, can save about 10%-
20% radial space, and the technology is still in the monopolization stage at present, domestic and external advanced bearing supplier does not possess still
Design so high rotating speed, the sliding bearing of top load operating mode；Simultaneously as the limitation in planet carrier both sides space, causes star-like wheel
The mounting arrangements and fuel feeding of axle are all relatively difficult to achieve, it is therefore desirable to design a kind of gear transmission structure for adapting to domestic development status.
It should be noted that the information for being disclosed in the utility model background section is merely intended to increase new to this practicality
The understanding of the general background of type, and be not construed as recognizing or imply that the information structure has been art technology in any form
Prior art well known to personnel.
Utility model content
The purpose of this utility model is to propose a kind of star gear transmission structure, planetary reduction gear and aero-engine, to change
The problem of kind oil leak and larger oil consumption.
To achieve the above object, the utility model provides a kind of star gear transmission structure, including planet carrier, gear, axle
Hold and wheel shaft, gear and bearing are installed in planet carrier, and wheel shaft is worn in the inner ring of planet carrier and bearing, and wheel shaft is provided with sky
The position of chamber, the solid section of wheel shaft and close outer wall, which is offered, draws oily passage, draws oily passage and is arranged on the inner ring of bearing
Oil transportation hole connection, lubricating oil is delivered to bearing and bearing is lubricated and cooled down.
Further, axis eccentric setting of the cavity relative to wheel shaft；Or, the cross section of cavity is set to irregularly
Shape, to increase the volume of cavity while conveniently opening up and drawing oily passage.
Further, radial direction oil hole is provided with wheel shaft, the periphery of wheel shaft is provided with oil collecting hole, draws oily passage and pass through with oil collecting hole
Radial direction oil hole is connected, and oil collecting hole is connected with oil transportation hole.
Further, bearing is rolling bearing.
Further, gear and bearing are integral type structure.
Further, the peripheral side of planet carrier is provided with mounting hole, and the integral structure that gear and bearing are constituted passes through peace
Fill the inside that planet carrier is installed in hole.
Further, in addition to sleeve, sleeve installs the inside of planet carrier, and wheel shaft passes through sleeve, sleeve from height
Degree is more than the axial length in the space for installation sleeve, can adjust bearing by carrying out skiving to sleeve when mounted
With the axial location of gear.
Further, the one end for drawing oily passage from the close sleeve of wheel shaft is axially extended, and close to bearing and gear
The position cut-off of one end away from sleeve.
Further, one end of the remote sleeve of wheel shaft is provided with boss, provided with adjustment between boss and the outside of planet carrier
Pad, adjusting pad uses half-and-half type structure.
Further, boss is achieved a fixed connection with planet carrier by fastener；And/or, the one of the close sleeve of wheel shaft
End carries out axial limiting with planet carrier by locking nut.
To achieve the above object, the utility model additionally provides a kind of planetary reduction gear, including above-mentioned star gear drive
Structure.
To achieve the above object, the utility model additionally provides a kind of aero-engine, including above-mentioned planetary reduction gear.
Based on above-mentioned technical proposal, the utility model is being not provided with the solid of cavity by setting cavity on wheel shaft
Open up partly and close to the position of outer wall and draw oily passage, form the lubricating system for drawing oil under a kind of ring, this lubricating system is not only
Lubrication leakage can be reduced, reduction lubricating oil consumption can also mitigate drive mechanism weight, specifically, compared in solid shafting
The upper mode for beating introductory note oilhole, due to being provided with cavity, therefore can reduce the overall weight of star gear transmission structure；Compared to
Hollow axocoel is only set and too many lubricating oil is filled in hollow shaft intracavitary, it is possible to reduce the collection oil mass of lubricating oil；Compared in sky
The scheme of mandrel and sealing gasket is set in mandrel cavity, it is possible to reduce parts and mating interface, and can effectively reduce lubrication
The leakage rate of oil；In addition, drawing oily passage compared to being set in center, the distance to bearing lubrication delivery can be shortened, subtracted
Few consumption of lubricating oil, improves oil leak problem.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not constitute to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the structural representation of the utility model star gear transmission structure one embodiment.
Fig. 2 is the cross-sectional view of cavity in the utility model star gear transmission structure one embodiment.
Fig. 3 is the cross-sectional view of cavity in the utility model star gear transmission structure another embodiment.
In figure：1st, wheel shaft；2nd, planet carrier；3rd, bearing；4th, gear；5th, sleeve；6th, locking nut；7th, pipe joint；8th, fasten
Part；9th, adjusting pad；10th, oily passage is drawn；11st, radial direction oil hole；12nd, oil transportation hole；13rd, oil collecting hole；14th, cavity.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is carried out clear, complete
Ground is described.Obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.
Based on embodiment of the present utility model, the institute that those of ordinary skill in the art are obtained under the premise of creative work is not made
There is other embodiment, belong to the scope of the utility model protection.
In description of the present utility model, it is to be understood that term " " center ", " transverse direction ", " longitudinal direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " on ", " under ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that the device or element of meaning must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the utility model protection domain.
As shown in figure 1, being the structural representation of the utility model star gear transmission structure one embodiment.In the embodiment
In, star gear transmission structure includes planet carrier 2, gear 4, bearing 3 and wheel shaft 1, and gear 4 and bearing 3 are installed in planet carrier 2,
Wheel shaft 1 is worn in the inner ring of planet carrier 2 and bearing 3, and wheel shaft 1 is provided with cavity 14, the solid section of wheel shaft 1 and close to outer wall
Position, which is offered, draws oily passage 10, draws oil transportation hole 12 of the oily passage 10 with being arranged on the inner ring of bearing 3 and connects, by lubricating oil
It is delivered to bearing 3 and bearing 3 is lubricated and cooled down.
In the above-described embodiments, by setting cavity 14 on wheel shaft 1, and it is being not provided with the solid section of cavity 14 and is leaning on
The position of nearly outer wall, which is opened up, draws oily passage 10, forms the lubricating system for drawing oil under a kind of ring, this lubricating system can not only subtract
Few lubrication leakage, reduction lubricating oil consumption, can also mitigate drive mechanism weight.Specifically, compared to beating small on solid shafting
Draw the mode of oilhole, due to being provided with cavity, therefore the overall weight of star gear transmission structure can be reduced；Compared to only setting
Hollow axocoel simultaneously fills too many lubricating oil in hollow shaft intracavitary, it is possible to reduce the collection oil mass of lubricating oil；Compared in hollow axocoel
The scheme of interior setting mandrel and sealing gasket, it is possible to reduce parts and mating interface, and can effectively reduce letting out for lubricating oil
Leakage quantity；In addition, drawing oily passage compared to being set in center, the distance to bearing lubrication delivery can be shortened, lubrication is reduced
Oily consumption, improves oil leak problem.
For the setting form of cavity 14, there can be multiple choices, such as, the cross section of cavity 14 can be with wheel shaft 1
It is provided in round centered on central point, then axially extends to form cavity 14, but this setup is due to being opened up
Draw the limitation of oily passage 10 so that the diameter of cavity 14 is smaller.
In order to increase the volume of cavity 14 as much as possible, mitigate the overall weight of wheel shaft 1, two kinds are provided here specifically in fact
Apply mode：The first, as shown in Fig. 2 the axis by cavity 14 relative to the axis eccentric setting, i.e. cavity 14 of wheel shaft 1
Mutually stagger with the axis of wheel shaft 1, it is misaligned, it is so also round in the section of cavity 14 on the premise of, can be appropriate
Increase the circular diameter；Second, as shown in figure 3, the cross section of cavity 14 is set into irregular shape, such as keeping
On the premise of the cross section of cavity 14 is integrally generally circular, draws oily passage 10 to open up and reserve out position, and form irregular
Shape, to increase the volume of cavity 14 while conveniently opening up and drawing oily passage 10.Certainly, the cross section of cavity 14 is not intended to limit
To be round-shaped, be provided in round shape be for the ease of manufacture, in other embodiments, it can also be provided that other shapes,
Such as ellipse, kidney-shaped etc..
For convenience of the circulation of lubricating oil, complete flow route is formed, radial direction oil hole 11 is provided with wheel shaft 1, wheel shaft 1
Periphery is provided with oil collecting hole 13, draws oily passage 10 and is connected with oil collecting hole 13 by radial direction oil hole 11, oil collecting hole 13 connects with oil transportation hole 12
It is logical.So, lubricating oil, which is delivered to, draws after oily passage 10, expires drawing the oily cohesion aggregation of passage 10, and then depended on pressure passes through radially oil
Hole 11 is transported to oil collecting hole 13, is then retransmitted to oil transportation hole 12, reaches the inner ring of bearing 3, realizes to the lubrication of bearing and cold
But act on.
In view of the development limitation of domestic sliding bearing technology, in being preferable to carry out for the utility model star gear transmission structure
In example, bearing 3 selects rolling bearing, such as cylinder roller bearing.
As the further preferred of the utility model star gear transmission structure preferred embodiment, gear 4 is integrated with bearing 3
Formula structure, the Bearing gear integral structure can be just completed before planet carrier 2 is installed to.Relative to split-type structural
For, gear 4 and bearing 3 are set to integral structure and are not only easily installed, and about 10%~20% footpath can be saved
To space, make overall structure compacter and exquisiteness.
Specifically, the peripheral side of planet carrier 2 is provided with mounting hole, and the integral structure that gear 4 and bearing 3 are constituted passes through
Mounting hole installs the inside of planet carrier 2.Mounting hole is set in the side, to realize to bearing 3 and the integral structure of gear 4
Install, the mounting hole for setting the two ends of planet carrier 2 to be used to install wheel shaft 1 can be avoided too big, planet carrier 2 is advantageously ensured that
Bulk strength, and the convenient installation of realization on the premise of space-consuming is reduced as much as possible；In addition, the mounting hole also serves as loss of weight
Hole, can further mitigate the overall weight of drive mechanism.
The axially position of gear 4 and the integral structure of bearing 3 for convenience, star gear transmission structure can also include sleeve
5, sleeve 5 installs the inside of planet carrier 2, and wheel shaft 1 passes through sleeve 5, and its length of sleeve 5 is more than for installation sleeve 5
The axial length in space, so that when mounted the axial location of bearing 3 and gear 4 can be adjusted by carrying out skiving to sleeve 5,
The adjustment of the axial location to gear 4 and the integral structure of bearing 3, side can be realized by the axial length adjustment of sleeve 5
Just axial alignment and installation.
The axially position of wheel shaft 1, boss, the thickness root of boss are provided with one end of the remote sleeve 5 of wheel shaft 1 for convenience
It is determined according to being actually needed, to ensure that enough bonding strengths and convenient fixation are defined.The outside of boss and planet carrier 2 it
Between be provided with adjusting pad 9, the thickness of adjusting pad 9 can be adjusted according to the axial location of wheel shaft 1.Preferably, adjusting pad 9 is used
Half-and-half type structure, this structure can be easy for installation and removal in the case where space is limited.Pass through the length and tune to sleeve 5
The regulation of the thickness of whole pad 9, it is possible to achieve the Bidirectional centering regulation of wheel shaft 1 in the axial direction, facilitates the positioning and installation of wheel shaft 1.
Boss can be achieved a fixed connection with planet carrier 2 by fastener 8, and fastener 8 can be stay bolt；Wheel shaft 1
Axial limiting can be carried out by locking nut 6 with planet carrier 2 close to one end of sleeve 5.Pass through fastener 8 and locking nut 6
Cooperation, all can realize convenient dismounting under compact operating mode very much in interior exterior space.
It for drawing oily passage 10, can set according to actual needs comparatively fine, as long as disclosure satisfy that lubrication needs i.e.
Can.In a specific embodiment, the one end for drawing oily passage 10 from the close sleeve 5 of wheel shaft 1 is axially extended, and close
The position cut-off of the one end of bearing 3 and gear 4 away from sleeve 5, that is, draw oily passage 10 for blind hole form, can so shorten oil
Road, reduces lubricating oil consumption, can be further while bigger space, the i.e. volume of cavity 14 can also be vacateed for setting cavity 14
Expand.
In the embodiment shown in fig. 1, draw oily passage 10 and be set to blind hole so that the remote sleeve 5 one of cavity 14
Diameter of the diameter at end than cavity 14 close to the one end of sleeve 5 is big, is not provided with drawing the cavity 14 of the part of oily passage 10 in other words
Diameter is more than the diameter of the cavity 14 provided with the part for drawing oily passage 10, is conducive to further improving weight loss effect.
In addition, can set pipe joint 7 in one end of the close sleeve 5 of wheel shaft 1, it is logical that the pipe joint 7 draws oil for connection
Road 10 and petroleum pipeline.
Based on the star gear transmission structure in each above-mentioned embodiment, the utility model also proposes a kind of planetary reduction gear,
Including above-mentioned star gear transmission structure.The planetary reduction gear can apply to all kinds of motor vehicles, engineering machinery or aviation hair
In motivation.
With reference to one of Fig. 1-3 pairs of the utility model star gear transmission structures, planetary reduction gear and aero-engine
The concrete structure and installation process of embodiment are described in detail：
With reference to Fig. 1, in this embodiment, planetary reduction gear mainly includes star-like wheel shaft 1, planet carrier 2, bearing 3, and (cylinder is rolled
Sub- bearing, containing single-row, biserial), (roller gear being made up of the oblique herringbone bear of a pair of left-right rotaries, with bearing capacity of gear 4
The advantages of high, stable drive and small axial load), sleeve 5, locking nut 6, pipe joint 7, fastener 8 and adjusting pad 9.This subtracts
Drive mechanism on fast device is fixed star train, and in the running, the axis of rotation position of each gear is fixed.
Star-like wheel shaft 1 is provided with anti-rotation groove, and the anti-rotation groove is engaged with the anti-rotation sheet being arranged on bearing 3, prevents bearing 3
Inner ring and star-like wheel shaft 1 between occur relative circumferentially rotate；Adjusting pad 9 is designed as half-and-half type structure, can be adjusted by match grinding
The thickness of pad 9, to adjust the axial location of bearing 3 and gear 4, while meeting the axial alignment degree requirement of wheel shaft 1；Sleeve 5
Axial length, can carry out match grinding according to the axial location demand of bearing 3 and gear 4；Locking nut 6 can be by locking nut body
With anti-rotation sheet composition, realize that axial restraint is acted on by the threaded connection with star-like wheel shaft 1.
Specifically installation steps are：Bearing 3 and the planet carrier 2 of gear 4 it is external install after, while by Bearing gear one
Body formula structure and sleeve 5 are positioned over the internal of planet carrier 2 by the side mounting hole of planet carrier 2, then by cooling down star-like wheel
The method of axle 1 inserts star-like wheel shaft 1 in adjusting pad 9, planet carrier 2, the inner ring of bearing 3 and sleeve 5, passes through the length of mating sleeve 5
The thickness of degree and adjusting pad 9, adjusting star-like wheel shaft 1 makes its centering, then passes on left one group of uniform circumferential fastener 8 and applies
Star-like wheel shaft 1 is connected in planet carrier 2 by certain pretightning force, and the star-like end of wheel shaft 1 is tightened in right side by locking nut 6, with
Realize the axial restraint to wheel shaft 1.
As shown in Figures 2 and 3, the lubrication of bearing 3 is using fuel system under ring, the eccentric setting of cavity 14 or using special-shaped shape
Shape.Outside lubricating oil by pipe joint 7 enter star-like wheel shaft 1 on drawing in oily passage 10, treat lubricating oil draw the oily inner product of passage 10 expire
Afterwards, depended on pressure acts through the ordered series of numbers radial direction oil hole 11 on star-like wheel shaft 1, by lubricating oil be transported to star-like wheel shaft 1 it is cylindrical on collection
Oilhole 13, is then retransmitted to the radial direction oil transportation hole 12 on the inner ring of bearing 3, so as to realize pair, the lubrication effect of bearing 3.
Pass through saying for multiple embodiments to the utility model star gear transmission structure, planetary reduction gear and aero-engine
It is bright, it can be seen that the utility model star gear transmission structure, planetary reduction gear and aero-engine embodiment at least have following
One or more advantages：
1st, bearing is used draws oily mode under wheel collar, and opens up cavity on wheel shaft, can effectively reduce overall weight, reduce
External interface quantity, reduces lubrication leakage amount；
2nd, Bearing gear integral structure is used under the conditions of high-speed overload, opposed gear bearing split-type structural can be with
About 10%-20% radial space is saved, the radial direction volume of whole star-wheel is reduced；
3rd, by setting sleeve and adjusting pad, it is possible to achieve the Bidirectional centering regulation of wheel shaft in the axial direction, wherein adjusting
Whole pad uses half-and-half type structure, facilitates the dismounting after match grinding to adjust, convenient, easy to operate；
4th, realization is combined by bolt and lock nut to axially fasten, can be in interior exterior space all extremely compact operating modes
Under realize easy disassembly.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still embodiment of the present utility model can be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (12)
1. a kind of star gear transmission structure, it is characterised in that including planet carrier (2), gear (4), bearing (3) and wheel shaft (1), institute
Gear (4) and the bearing (3) is stated to be arranged on the planet carrier (2), the wheel shaft (1) be located in the planet carrier (2) and
In the inner ring of the bearing (3), the wheel shaft (1) is provided with cavity (14), the solid section of the wheel shaft (1) and close to outer wall
Position, which is offered, draws oily passage (10), the oil transportation hole drawn oily passage (10) and be arranged on the inner ring of the bearing (3)
(12) connect, lubricating oil is delivered to the bearing (3) and the bearing (3) is lubricated and cooled down.
2. star gear transmission structure according to claim 1, it is characterised in that the cavity (14) is relative to the wheel shaft
(1) axis eccentric setting；Or, the cross section of the cavity (14) is set to irregular shape, conveniently to open up institute
State the volume for increasing the cavity (14) while drawing oily passage (10).
3. star gear transmission structure according to claim 1, it is characterised in that radial direction oil hole is provided with the wheel shaft (1)
(11), the periphery of the wheel shaft (1) is provided with oil collecting hole (13), described to draw oily passage (10) with the oil collecting hole (13) by described
Radial direction oil hole (11) is connected, and the oil collecting hole (13) connects with the oil transportation hole (12).
4. star gear transmission structure according to claim 1, it is characterised in that the bearing (3) is rolling bearing.
5. star gear transmission structure according to claim 4, it is characterised in that the gear (4) is with the bearing (3)
Integral structure.
6. star gear transmission structure according to claim 5, it is characterised in that the peripheral side of the planet carrier (2) is set
There is mounting hole, the integral structure that the gear (4) and the bearing (3) are constituted is arranged on the planet by the mounting hole
The inside of frame (2).
7. the star gear transmission structure according to any one of claim 1~6, it is characterised in that also including sleeve (5), institute
State sleeve (5) be arranged on the planet carrier (2) inside, the wheel shaft (1) pass through the sleeve (5), the sleeve (5) from
Body length is more than the axial length in the space for being used to install the sleeve (5), with when mounted can be by the sleeve (5)
Skiving is carried out to adjust the axial location of the bearing (3) and the gear (4).
8. star gear transmission structure according to claim 7, it is characterised in that the oily passage (10) that draws is from the wheel shaft
(1) one end of the close sleeve (5) is axially extended, and remote described close to the bearing (3) and the gear (4)
The position cut-off of one end of sleeve (5).
9. star gear transmission structure according to claim 7, it is characterised in that the remote sleeve of the wheel shaft (1)
(5) one end is provided with boss, and adjusting pad (9), the adjusting pad are provided between the boss and the outside of the planet carrier (2)
(9) half-and-half type structure is used.
10. star gear transmission structure according to claim 9, it is characterised in that the boss leads to the planet carrier (2)
Fastener (8) is crossed to achieve a fixed connection；And/or, one end and the planet carrier of the close sleeve (5) of the wheel shaft (1)
(2) axial limiting is carried out by locking nut (6).
11. a kind of planetary reduction gear, it is characterised in that including the star gear drive knot as described in any one of claim 1~10
Structure.
12. a kind of aero-engine, it is characterised in that including planetary reduction gear as claimed in claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720252923.5U CN206582291U (en) | 2017-03-16 | 2017-03-16 | Star gear transmission structure, planetary reduction gear and aero-engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720252923.5U CN206582291U (en) | 2017-03-16 | 2017-03-16 | Star gear transmission structure, planetary reduction gear and aero-engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206582291U true CN206582291U (en) | 2017-10-24 |
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ID=60113490
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720252923.5U Active CN206582291U (en) | 2017-03-16 | 2017-03-16 | Star gear transmission structure, planetary reduction gear and aero-engine |
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| CN (1) | CN206582291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112727561A (en) * | 2020-12-21 | 2021-04-30 | 中国北方发动机研究所(天津) | Tower wheel structure with distribution phase adjustable function |
| CN113864404A (en) * | 2020-06-30 | 2021-12-31 | 中国航发商用航空发动机有限责任公司 | Planetary gear box and star gear box |
-
2017
- 2017-03-16 CN CN201720252923.5U patent/CN206582291U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864404A (en) * | 2020-06-30 | 2021-12-31 | 中国航发商用航空发动机有限责任公司 | Planetary gear box and star gear box |
| CN112727561A (en) * | 2020-12-21 | 2021-04-30 | 中国北方发动机研究所(天津) | Tower wheel structure with distribution phase adjustable function |
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