CN113482914A - Gear oil pump of turboprop engine - Google Patents
Gear oil pump of turboprop engine Download PDFInfo
- Publication number
- CN113482914A CN113482914A CN202110930219.1A CN202110930219A CN113482914A CN 113482914 A CN113482914 A CN 113482914A CN 202110930219 A CN202110930219 A CN 202110930219A CN 113482914 A CN113482914 A CN 113482914A
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- China
- Prior art keywords
- gear
- oil
- pressure
- driven
- driving
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention relates to the technical field of engine lubrication, in particular to a turboprop engine gear oil pump which comprises a pump shell, a driving booster gear, a driven booster gear, a driving oil return gear and a driven oil return gear, wherein the driving booster gear is arranged on the pump shell; the pump shell is provided with a high-pressure oil cavity and an oil return cavity; the driving supercharging gear and the driven supercharging gear are engaged and assembled in the high-pressure oil cavity; the driving oil return gear and the driven oil return gear are engaged and assembled in the oil return cavity; the driving booster gear and the driving oil return gear are coaxially designed, the driving oil return gear is connected with the driving booster gear through a spline, and the driven booster gear and the driven oil return gear are coaxially designed; partial oil liquid of pressure boost can reveal to initiative pressure boost gear and the bearing position clearance of complex with it and flow in first shaft hole, impresses the clearance between driven pressure boost gear and the high-pressure oil cavity wall and flows in the third shaft hole with fluid simultaneously, flows to the second shaft hole through first shaft hole, flows out after flowing to the fourth shaft hole through the third shaft hole, has additionally increased the lubricating point of two oil circuits.
Description
Technical Field
The invention relates to the technical field of engine lubrication, in particular to a turboprop engine gear oil pump.
Background
The gear oil pump is suitable for conveying various liquids with lubricating property, and is widely applied to various mechanical systems. Traditional gear oil pump, including the pump body, locate the protecgulum and the back lid at the both ends of the pump body respectively and locate driving gear axle and driven gear axle in the pump body, the gear oil pump is rotatory that the driving gear drives the driven gear when operating, inhale the fluid in the pump body from the lubricating oil case in oil pump working process and will keep the lubricating oil of certain pressure to export from the oil-out after the booster stage pressure boost, gear oil pump a pair of gear among the prior art can only correspond an delivery outlet and carry to each jet point through the lubricating oil pipeline, need to design extra fuel feeding oil circuit to the more device of lubricating point.
Disclosure of Invention
The invention aims to provide a turboprop engine gear oil pump, wherein a driving booster gear and a driven booster gear can provide two additional oil supply oil paths.
In order to achieve the purpose, the invention adopts the following technical scheme:
a turboprop engine gear oil pump comprising:
a pump housing having a high pressure oil chamber and an oil return chamber;
the driving pressurizing gear and the driven pressurizing gear are meshed and connected with the high-pressure oil cavity;
the driving oil return gear and the driven oil return gear are connected to the oil return cavity in a meshed mode;
the driving supercharging gear and the driving oil return gear are coaxially arranged, the driving oil return gear is in transmission connection with the driving supercharging gear, and the driven supercharging gear and the driven oil return gear are coaxially arranged;
first shaft hole has been seted up to initiative pressure boost gear, the second shaft hole has been seted up to initiative return gear, third shaft hole has been seted up to driven pressure boost gear, fourth shaft hole has been seted up to driven return gear, first shaft hole with second shaft hole intercommunication, third shaft hole with fourth shaft hole intercommunication, fluid in the high pressure oil chamber can pass through initiative pressure boost gear with space between the high pressure oil chamber wall flows in first shaft hole, fluid in the high pressure oil chamber can pass through driven pressure boost gear with space between the high pressure oil chamber wall flows in the third shaft hole.
Preferably, the spline shaft is a hollow shaft, is inserted into the second shaft hole and is connected with the hole wall of the second shaft hole through a spline.
Preferably, the pump housing comprises a pump cover, a booster pump housing and an oil return pump housing, the pump cover is connected to the booster pump housing to form the high-pressure oil cavity, and the booster pump housing is connected to the oil return pump housing to form the oil return cavity.
Preferably, the high-pressure oil cavity is provided with a first oil inlet portion and a first oil outlet portion which are positioned on two sides of the meshing position of the driving booster gear and the driven booster gear, and the pump cover is provided with a pressure regulating oil path communicated with the first oil inlet portion and the first oil outlet portion.
Preferably, the pump cover is further provided with a pressure regulating valve capable of opening or closing the pressure regulating oil passage.
Preferably, a first sealing ring is arranged between the pump cover and the booster pump casing.
Preferably, a second sealing ring is arranged between the booster pump housing and the scavenge pump housing.
Preferably, the pump cover is provided with a first oil outlet communicated with the high-pressure oil chamber.
Preferably, a second oil inlet and a second oil outlet communicated to the oil return cavity are formed in the oil return pump shell.
Preferably, the driving booster gear and the driven booster gear are connected to the cavity wall of the high-pressure oil cavity through sliding bearings, and the driving oil return gear and the driven oil return gear are connected to the cavity wall of the oil return cavity through sliding bearings.
The invention has the beneficial effects that: compared with the gear oil pump in the prior art, the gear oil pump of the turboprop engine provided by the invention has the advantages that pure lubricating oil is conveyed in the high-pressure cavity, the oil pressure is higher, the oil is pressed into a gap between the driving boosting gear and the wall of the high-pressure oil cavity through the high pressure in the high-pressure cavity and flows into the first shaft hole, the oil is pressed into a gap between the driven boosting gear and the wall of the high-pressure oil cavity and flows into the third shaft hole, the oil flows to the second shaft hole through the first shaft hole and flows out after flowing to the fourth shaft hole through the third shaft hole, and the lubricating points of two oil paths are additionally increased.
Drawings
FIG. 1 is an isometric view of the overall construction of a turboprop gear oil pump of the present invention;
fig. 2 is a sectional view of the overall structure of a turboprop gear oil pump according to the present invention.
In the figure:
1. a pump housing; 11. a pump cover; 111. a first oil outlet; 12. a booster pump housing; 121. a first seal ring; 122. a first oil inlet; 13. a scavenge pump housing; 131. a second seal ring; 132. a second oil inlet; 133. a second oil outlet;
100. a high pressure oil chamber;
200. an oil return cavity;
2. an active boost gear; 21. a first shaft hole;
3. a driven boost gear; 31. a third shaft hole;
4. an active oil return gear; 41. a second shaft hole;
5. a driven oil return gear; 51. a fourth shaft hole;
6. a spline shaft;
7. a pressure regulating valve.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 2, the present invention provides a turboprop gear oil pump, comprising: the pump comprises a pump shell 1, a driving booster gear 2, a driven booster gear 3, a driving oil return gear 4 and a driven oil return gear 5; the pump housing 1 has a high-pressure oil chamber 100 and an oil return chamber 200; the driving booster gear 2 and the driven booster gear 3 are meshed and connected with the high-pressure oil cavity 100; the driving oil return gear 4 and the driven oil return gear 5 are meshed and connected with the oil return cavity 200; the driving pressurizing gear 2 and the driving oil return gear 4 are coaxially arranged, the driving oil return gear 4 is in transmission connection with the driving pressurizing gear 2, and the driven pressurizing gear 3 and the driven oil return gear 5 are coaxially arranged; compared with the prior art of a turboprop gear oil pump, the turboprop gear oil pump provided by the embodiment has the advantages that the high oil pressure is higher because pure lubricating oil is conveyed in the high-pressure cavity, and the high oil pressure is pressed into a gap between the cavity walls of the driving supercharging gear 2 and the high-pressure oil cavity 100 through the high-pressure oil in the high-pressure cavity, through the high pressure in the high-pressure chamber, oil is pressed into a gap between the driven booster gear 3 and the wall of the high-pressure oil chamber 100, the oil can flow to the second shaft hole 41 through the first shaft hole 21 and flow out after flowing to the fourth shaft hole 51 through the third shaft hole 31, and lubricating points of two oil paths are additionally increased.
Specifically, the oil-water separator further comprises a spline shaft 6, the spline shaft 6 is a hollow shaft, the spline shaft 6 is inserted into the second shaft hole 41 and is in transmission connection with the driving oil return gear 4, the oil flows out of the spline shaft 6 after flowing into the second shaft hole 41, and further, the power propagation path is as follows: the spline shaft 6 is driven by an external driving mechanism to rotate and drive the driving oil return gear 4, the driving oil return gear 4 drives the driving booster gear 2 through an external spline, the driving oil return gear 4 and the driving booster gear 2 drive the driven oil return gear 5 and the driven booster gear 3 to rotate through gear engagement, the driving booster gear 2 and the driven booster gear 3 are responsible for conveying oil to each oil point from the lubricating oil tank, the oil lubricated by each oil point can be collected to the bottom of the gear box of the device, the driving oil return gear 4 and the driven oil return gear 5 are used for conveying the oil collected to the bottom of the gear box of the device to a radiator and then recovering the oil to the lubricating oil tank, and circulation of an oil way is completed.
Specifically, the pump housing 1 includes a pump cover 11, a booster pump housing 121, and a scavenge pump housing 131, the pump cover 11 is connected to the booster pump housing 121 to form a high-pressure oil chamber 100, the booster pump housing 121 is connected to the scavenge pump housing 131 to form an scavenge chamber 200, and further, bolts sequentially pass through the pump cover 11, the booster pump housing 121, and the scavenge pump housing 131 and cooperate with nuts to fixedly connect the pump cover 11, the booster pump housing 121, and the scavenge pump housing 131.
Furthermore, the high-pressure oil chamber 100 has a first oil inlet portion and a first oil outlet portion located on two sides of the meshing position of the driving booster gear 2 and the driven booster gear 3, a pressure regulating oil path communicating the first oil inlet portion and the first oil outlet portion is formed in the pump cover 11, a pressure regulating valve 7 is further arranged on the pump cover 11, the pressure regulating oil path can be opened or closed by the pressure regulating valve 7, a spring is arranged on the pressure regulating valve 7 in the embodiment, the oil path is blocked due to the fact that the oil pressure in the high-pressure oil chamber 100 is too large, the pressure regulating valve 7 is arranged, the pressure regulating oil path is opened when the oil pressure exceeds a preset value, the oil return oil is depressurized, when the oil pressure is normal, the pressure regulating valve 7 automatically returns to the original position to close the pressure regulating oil path under the action of the spring, the pressure regulating valve 7 can be manually controlled to be opened or closed, and the oil pressure can be kept stable all the time.
Specifically, a first sealing ring 121 is arranged between the pump cover 11 and the booster pump casing 121, and a second sealing ring 131 is arranged between the booster pump casing 121 and the oil return pump casing 131, so that the overall sealing performance of the oil return pump gear is improved, and air leakage, pressure relief or oil leakage is prevented.
Specifically, the booster pump housing 121 is opened with a first oil inlet 122 and a first oil outlet 111 communicating with the high-pressure oil chamber 100, the first oil inlet 122 is connected to a lubricating oil tank through a pipeline to provide oil, and the oil is discharged from the first oil outlet 111 and conveyed to a lubricating point.
Specifically, the oil return pump housing 131 is provided with a second oil inlet 132 communicated to the oil return cavity 200, and the second oil inlet 132 recovers used oil at the bottom of the gear box through a pipeline device and conveys the oil to the heat sink from the second oil outlet 133.
Specifically, initiative pressure boost gear 2 and driven pressure boost gear 3 all connect in the inner wall of high-pressure oil pocket 100 through slide bearing, initiative return oil gear 4 and driven return oil gear 5 all connect in the inner wall of returning oil pocket 200 through slide bearing, make initiative pressure boost gear 2, driven pressure boost gear 3, initiative return oil gear 4 and driven return oil gear 5 rotate more smoothly, wherein initiative pressure boost gear 2 and the one end sharing same slide bearing that initiative return oil gear 4 is close to each other, driven pressure boost gear 3 and the one end sharing same slide bearing that driven return oil gear 5 is close to each other, save slide bearing's use.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A turboprop engine gear oil pump, comprising:
a pump housing (1) having a high-pressure oil chamber (100) and an oil return chamber (200);
the driving booster gear (2) and the driven booster gear (3), wherein the driving booster gear (2) and the driven booster gear (3) are meshed and connected with the high-pressure oil cavity (100);
the oil return device comprises a driving oil return gear (4) and a driven oil return gear (5), wherein the driving oil return gear (4) and the driven oil return gear (5) are meshed and connected with the oil return cavity (200);
the driving supercharging gear (2) and the driving oil return gear (4) are coaxially arranged, the driving oil return gear (4) is in transmission connection with the driving supercharging gear (2), and the driven supercharging gear (3) and the driven oil return gear (5) are coaxially arranged;
first shaft hole (21) have been seted up in initiative pressure boost gear (2), second shaft hole (41) have been seted up in initiative return oil gear (4), third shaft hole (31) have been seted up in driven pressure boost gear (3), fourth shaft hole (51) have been seted up in driven return oil gear (5), first shaft hole (21) with second shaft hole (41) intercommunication, third shaft hole (31) with fourth shaft hole (51) intercommunication, fluid in high pressure oil chamber (100) can pass through initiative pressure boost gear (2) with space between high pressure oil chamber (100) the chamber wall flows in first shaft hole (21), fluid in high pressure oil chamber (100) can pass through driven pressure boost gear (3) with space between high pressure oil chamber (100) the chamber wall flows in third shaft hole (31).
2. The turboprop engine gear oil pump according to claim 1, further comprising a spline shaft (6), wherein the spline shaft (6) is a hollow shaft, and the spline shaft (6) is inserted into the second shaft hole (41) and is connected to a wall of the second shaft hole (41) by a spline.
3. The turboprop engine gear oil pump according to claim 1, characterized in that the pump housing (1) comprises a pump cover (11), a booster pump housing (12) and a scavenge pump housing (13), the pump cover (11) being connected to the booster pump housing (12) to form the high-pressure oil chamber (100), the booster pump housing (12) being connected to the scavenge pump housing (13) to form the scavenge chamber (200).
4. The turboprop engine gear oil pump according to claim 3, wherein the high-pressure oil chamber (100) has a first oil inlet portion and a first oil outlet portion located on two sides of a meshing portion of the driving booster gear (2) and the driven booster gear (3), and the pump cover (11) is provided with a pressure-regulating oil path communicating the first oil inlet portion and the first oil outlet portion.
5. The turboprop engine gear oil pump according to claim 4, wherein the pump cover (11) is further provided with a pressure regulating valve (7), and the pressure regulating valve (7) can open or close the pressure regulating oil path.
6. The turboprop engine gear oil pump according to claim 3, characterized in that a first sealing ring (121) is provided between the pump cover (11) and the booster pump housing (12).
7. Turboprop engine gear oil pump according to claim 3, characterized in that a second sealing ring (131) is provided between the booster pump housing (12) and the scavenge pump housing (13).
8. The turboprop gear oil pump according to claim 3, wherein the booster pump housing (12) has a first oil inlet (122) communicating with the high-pressure oil chamber (100), and the pump cover (11) has a first oil outlet (111) communicating with the high-pressure oil chamber (100).
9. The turboprop engine gear oil pump according to claim 3, wherein said scavenge pump housing (13) is formed with a second oil inlet (132) and a second oil outlet (133) communicating with said scavenge chamber (200).
10. Turboprop engine gear oil pump according to any one of claims 1 to 9, characterized in that said driving pressure gearwheel (2) and said driven pressure gearwheel (3) are each connected to the wall of said high-pressure oil chamber (100) by means of a plain bearing, and said driving oil return gearwheel (4) and said driven oil return gearwheel (5) are each connected to the wall of said oil return chamber (200) by means of a plain bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930219.1A CN113482914B (en) | 2021-08-13 | 2021-08-13 | Gear oil pump of turboprop engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930219.1A CN113482914B (en) | 2021-08-13 | 2021-08-13 | Gear oil pump of turboprop engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113482914A true CN113482914A (en) | 2021-10-08 |
| CN113482914B CN113482914B (en) | 2023-02-03 |
Family
ID=77945155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110930219.1A Active CN113482914B (en) | 2021-08-13 | 2021-08-13 | Gear oil pump of turboprop engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113482914B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492757A (en) * | 2022-09-23 | 2022-12-20 | 江西中发天信航空发动机科技有限公司 | Internal gearing rotor oil pump |
| EP4361440A1 (en) * | 2022-10-28 | 2024-05-01 | Rolls-Royce Deutschland Ltd & Co KG | Gear pump, drive device and controllable pitch propeller |
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| JPH0291425A (en) * | 1988-09-27 | 1990-03-30 | Aisin Seiki Co Ltd | Mechanical supercharger |
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| JP2009114976A (en) * | 2007-11-07 | 2009-05-28 | Nabtesco Corp | Vacuum pump |
| CN102155402A (en) * | 2011-03-26 | 2011-08-17 | 长治液压有限公司 | Double-oil-outlet speed variable gear pump |
| CN103671859A (en) * | 2013-12-18 | 2014-03-26 | 重庆建设摩托车股份有限公司 | Lubricating structure of sliding gear of engine |
| CN104405469A (en) * | 2014-10-20 | 2015-03-11 | 奇瑞汽车股份有限公司 | Engine oil pump and engine lubrication system thereof |
| CN204572107U (en) * | 2014-12-18 | 2015-08-19 | 中国南方航空工业(集团)有限公司 | Integrated form lubricating fitting and the aeroengine containing this device |
| CN204664371U (en) * | 2015-05-15 | 2015-09-23 | 江苏林海动力机械集团公司 | Engine mission engine oil recycle system |
| CN110397485A (en) * | 2019-08-07 | 2019-11-01 | 奇瑞汽车股份有限公司 | Engine oil pump |
| CN209762195U (en) * | 2019-04-25 | 2019-12-10 | 重庆东欧机械制造有限公司 | Main and auxiliary shaft mechanism of motorcycle engine |
-
2021
- 2021-08-13 CN CN202110930219.1A patent/CN113482914B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2547621A1 (en) * | 1983-06-14 | 1984-12-21 | Kloeckner Humboldt Deutz Ag | Gear pump or motor with axially pressurised bearing members |
| JPH0291425A (en) * | 1988-09-27 | 1990-03-30 | Aisin Seiki Co Ltd | Mechanical supercharger |
| JP2006177299A (en) * | 2004-12-24 | 2006-07-06 | Toyota Industries Corp | Electric pump |
| JP2009114976A (en) * | 2007-11-07 | 2009-05-28 | Nabtesco Corp | Vacuum pump |
| CN102155402A (en) * | 2011-03-26 | 2011-08-17 | 长治液压有限公司 | Double-oil-outlet speed variable gear pump |
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| CN204572107U (en) * | 2014-12-18 | 2015-08-19 | 中国南方航空工业(集团)有限公司 | Integrated form lubricating fitting and the aeroengine containing this device |
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| CN209762195U (en) * | 2019-04-25 | 2019-12-10 | 重庆东欧机械制造有限公司 | Main and auxiliary shaft mechanism of motorcycle engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492757A (en) * | 2022-09-23 | 2022-12-20 | 江西中发天信航空发动机科技有限公司 | Internal gearing rotor oil pump |
| EP4361440A1 (en) * | 2022-10-28 | 2024-05-01 | Rolls-Royce Deutschland Ltd & Co KG | Gear pump, drive device and controllable pitch propeller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113482914B (en) | 2023-02-03 |
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|---|---|---|---|
| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 201611 3 3 Ting Ting Road, Che Dun Town, Songjiang District, Shanghai Applicant after: Shanghai Shangshi aeroengine Co.,Ltd. Address before: 201611 3 3 Ting Ting Road, Che Dun Town, Songjiang District, Shanghai Applicant before: SHANGHAI SHANGSHI ENERGY TECHNOLOGY CO.,LTD. |
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| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |