Bearing transmission mechanism with emergency lubrication function and aero-engine

Abstract

The application discloses a bearing transmission mechanism with an emergency lubrication function and an aero-engine. The bearing seat is internally provided with an oil channel, and an oil hole is arranged below the oil channel. The oil channel and the oil hole are used for allowing the engine lubricating oil to pass. The bearing comprises an outer ring and a retainer. Rolling elements are embedded on the retainer. The outer ring comprises an oil collecting groove and an oil storage groove. The oil collecting groove is arranged directly above the outer ring and is communicated with the oil hole, and is used for receiving the lubricating oil from the bearing seat. The oil storage groove is communicated with the oil collecting groove, and is used for storing the lubricating oil. An oil outlet hole is arranged at the bottom of the oil storage groove, and is used for allowing the lubricating oil to flow to the inside of the bearing. The bearing outer ring is integrated with the oil collecting groove, the oil storage groove and the oil outlet hole, and can reserve a certain amount of lubricating oil by using the bearing structure itself without increasing the emergency lubrication system. The lubricating oil can directly flow into the inside of the bearing to cope with the lubricating oil interruption working condition of the aero-engine.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft engines, and in particular to a bearing transmission mechanism and an aircraft engine with an emergency lubrication function. Background Art

[0002] Oil outage is one of the most severe operating conditions for aircraft engine main shaft bearings, presenting significant operational risks. Currently, for main shaft bearings operating under challenging load, speed, and ambient temperature conditions, an emergency lubrication system is often added to the engine to address oil outages. However, this results in a more complex oil system, engine layout, and increased costs.

[0003] Aircraft engines typically have a comprehensive oil system for lubricating and cooling friction pairs such as bearings and gears. However, during flight, the engine may experience excessive flight attitude or overload, causing the oil pump to be unable to extract oil from the bottom of the oil tank. This can cause bearings, gears, and other friction pairs to operate under oil-deprived conditions. These components face oil-starved or even oil-free conditions, posing significant operational risks. Spindle bearings, particularly those subject to heavy loads, high speeds, and high ambient temperatures, often experience severe wear and even locking during oil-deprived conditions, significantly impacting engine development progress. If this occurs during actual flight, it could result in an in-flight engine shutdown.

[0004] The main shaft bearings of existing high-performance engines are typically small, operate at high speeds, carry heavy loads, and operate in high ambient temperatures. This generates significant friction and heat during operation, requiring sufficient lubricating oil for lubrication and cooling. In the event of an oil outage, these bearings face severe challenges due to a lack of lubricating oil for both lubrication and cooling. In some current engines, main shaft bearings operating under more stringent operating conditions are typically equipped with additional emergency lubricating oil circuits in addition to conventional lubrication lines. This ensures that the bearings can withstand the oil outage, preventing them from being overwhelmed.

[0005] Existing technologies require an additional emergency lubrication system, including an additional emergency oil source, emergency oil circuits, and emergency nozzles, further complicating the overall engine structure and layout and increasing costs. Furthermore, emergency lubrication systems typically use air bleed to inject emergency lubricating oil. External emergency nozzles typically spray an oil-air mixture onto the bearings, which is susceptible to wind resistance caused by the high-speed rotation of the bearings, making it difficult for the oil to effectively enter the bearings. Furthermore, the layout of the air circuits further complicates the engine structure, and the temperature and impact of the airflow can adversely affect bearing operation. Summary of the Invention

[0006] The present invention provides a bearing transmission mechanism with an emergency lubrication function to solve the technical problem in the prior art that an additional emergency lubrication system is used in the event of oil interruption, which makes the engine structure and layout complicated and the cost high.

[0007] The present invention provides an aeroengine.

[0008] According to one aspect of the present invention, a bearing transmission mechanism with an emergency lubrication function is provided, which is used to be arranged on an aircraft engine. The bearing transmission mechanism with emergency lubrication function includes a bearing and a bearing seat, the bearing is installed on the bearing seat, the axis of the bearing seat has an angle relative to the vertical direction, an oil passage is opened inside the bearing seat, an oil hole is provided below the oil passage, and the oil passage and the oil hole are used to allow the lubricating oil of the aircraft engine to pass through; the bearing includes an outer ring and a retaining frame, a rolling body is embedded in the retaining frame, the outer ring is sleeved on the outside of the retaining frame and pressed against the rolling body, the outer ring includes an oil collecting groove and an oil storage groove, the oil collecting groove is arranged directly above the outer ring and is connected with the oil hole, and is used to receive the lubricating oil from the bearing seat, the oil storage groove is connected with the oil collecting groove, the oil storage groove is used to store the lubricating oil, and an oil outlet hole is provided at the bottom of the oil storage groove, and the oil outlet hole is used to flow the lubricating oil in the oil storage groove to the rolling body.

[0009] Furthermore, there are a plurality of oil storage tanks, which are arranged around the oil collecting tank, and the depth of the oil storage tank is lower than the depth of the oil collecting tank.

[0010] Furthermore, the oil collecting tank is provided with a channel which is connected with the oil storage tank and is inclined downwardly toward the oil storage tank.

[0011] Furthermore, a sealing groove is provided on the outer ring or the bearing seat, and the sealing groove is used to install a sealing ring. The sealing ring is used to enclose a sealing ring between the bearing seat and the outer ring, and the oil storage tank and the oil collection tank are both provided in the sealing area.

[0012] Furthermore, the pressure in the oil collecting tank and the oil storage tank is lower than the oil circuit pressure in the bearing seat.

[0013] Furthermore, one of the outer ring and the bearing seat is provided with a groove, and the other is provided with a boss embedded in the groove. The boss is used to cooperate with the groove to position the oil collecting groove directly above the bearing.

[0014] Furthermore, the oil collecting groove is arranged at the axial center position of the outer peripheral wall of the outer ring, the oil storage groove is arranged outside the oil collecting groove, and the oil outlet hole is inclined toward one end of the rolling body along the center direction of the rolling body.

[0015] Furthermore, the retaining frame is also provided with a ramp surface and an oil dam. The ramp surface extends outward along the axial direction of the retaining frame and is inclined radially outward at one end away from the rolling body. The oil dam is arranged at the end of the ramp surface away from the rolling body, and the height of the oil dam is greater than the height of the ramp surface.

[0016] Furthermore, the bearing also includes an inner ring, which is embedded in the inner side of the retaining frame and abuts the rolling body. The inner ring is provided with an oil inlet channel, the first end of the oil inlet channel is used to connect to the lubricating oil system of the aircraft engine, and the second end of the oil inlet channel is arranged toward the rolling body.

[0017] Furthermore, the oil inlet channel includes an axial oil groove and a radial oil groove. The radial oil groove is arranged along the outer wall of the semi-inner ring with the drawing groove, and the axial oil groove is arranged on the inner wall of the semi-inner ring with the drawing groove. The axial oil groove and the radial oil groove are connected to each other for guiding the lubricating oil of the normal oil supply system to the inside of the bearing.

[0018] According to yet another aspect of the present invention, an aircraft engine is provided, comprising the bearing transmission mechanism with the emergency lubrication function.

[0019] The present invention has the following beneficial effects:

[0020] The present invention provides a bearing transmission mechanism with an emergency lubrication function, in which an oil collecting tank, an oil storage tank, an oil outlet hole and other structures are integrated on the outer ring of the bearing. When the engine is normally supplied with oil, the oil path opened in the bearing seat flows the lubricating oil into the oil collecting tank through the oil hole and then into the oil storage tank for storage. When the engine lubricating oil is interrupted, the lubricating oil stored in the oil storage tank can automatically flow to the inside of the bearing through the oil outlet hole under the action of gravity, thereby playing the emergency oil supply function when the lubricating oil is interrupted. The present invention can utilize the bearing's own structure to reserve a certain amount of lubricating oil without adding an additional emergency lubrication system. The lubricating oil can directly flow into the inside of the bearing to cope with the lubricating oil interruption condition of the aircraft engine. While reducing the operating risk of the bearing, it also improves the structural compactness, simplicity and economy of the engine.

[0021] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention is further described in detail below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is the structural explosion diagram of the bearing;

[0024] Figure 2 The radial section of the bearing transmission mechanism with emergency lubrication function Figure 1 ;

[0025] Figure 3 The radial section of the bearing transmission mechanism with emergency lubrication function Figure 2 ;

[0026] Figure 4 for Figure 3 An enlarged view of the bearing transmission mechanism with emergency lubrication function;

[0027] Figure 5 This is a graph showing the relationship between the amount of oil stored in the oil collection tank and the oil storage tank and time under lubricating oil interruption conditions.

[0028] In the figure: 1. Half inner ring, 2. Outer ring, 3. Rolling element, 4. Cage, 5. Half inner ring with drawing groove, 6. Sealing groove, 7. Oil dam, 8. Slope surface, 9. Oil storage tank, 10. Channel, 11. Oil collecting groove, 12. Oil outlet hole, 13. Drawing groove, 14. Radial oil groove, 15. Axial oil groove, 16. Groove, 17. Bearing seat, 18. Oil passage, 19. Oil hole, 20. Sealing ring, 21. Boss. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0030] See also Figures 1 to 4 The embodiment of the first aspect of the present invention provides a bearing transmission mechanism with an emergency lubrication function, which is used to be installed on an aircraft engine. The bearing transmission mechanism with an emergency lubrication function includes a bearing and a bearing seat 17. The bearing is installed on the bearing seat 17. The axis of the bearing seat 17 has an angle relative to the vertical direction. An oil passage 18 is opened inside the bearing seat 17. An oil hole 19 is provided below the oil passage 18. The oil passage 18 and the oil hole 19 are used to allow the lubricating oil of the aircraft engine to pass through. The bearing includes an outer ring 2 and a retainer 4. The retaining frame 4 is embedded with a rolling body 3, the outer ring 2 is sleeved on the outside of the retaining frame 4 and pressed against the rolling body 3, the outer ring 2 includes an oil collecting groove 11 and an oil storage groove 9, the oil collecting groove 11 is arranged directly above the outer ring 2 and is connected with the oil hole 19, and is used to receive the lubricating oil from the bearing seat 17, the oil storage groove 9 is connected with the oil collecting groove 11, the oil storage groove 9 is used to introduce the lubricating oil collected by the oil collecting groove 11 and store the lubricating oil, and an oil outlet hole 12 is provided at the bottom of the oil storage groove 9, and the oil outlet hole 12 is used to flow the lubricating oil in the oil storage groove 9 to the rolling body 3.

[0031] The above-mentioned bearing transmission mechanism with emergency lubrication function has a basic bearing structure of a double-half inner ring three-point contact ball bearing. This type of bearing is more common in aircraft engines and is often used as a thrust bearing, such as Figure 1 As shown, its components include a semi-inner ring 1, an outer ring 2, rolling elements 3, a cage 4, and a semi-inner ring 5 with drawing grooves, wherein the semi-inner ring 5 with drawing grooves is provided with drawing grooves 13. However, the difference between the bearing provided by the present invention and conventional bearings lies in the fact that it has a certain emergency lubrication function, which is achieved through a special structural design that is different from the outer ring 2 and cage 4 of conventional bearings. Figure 2 and Figure 3 As shown, an oil passage 18 is provided within the bearing seat 17, allowing engine oil to enter the bearing seat 17 and then enter the bearing's oil collection groove 11 through an oil hole 19 provided directly above the bearing seat 17. This oil collection groove 11 is located directly below this oil hole 19 and directly above the outer ring 2, communicating with this hole. The oil in this groove enters the oil reservoir 9 and flows into the bearing through an oil outlet 12 below the reservoir 9. In the event of an engine oil outage, the oil stored in the reservoir 9 automatically flows into the bearing through the oil outlet 12 under the action of gravity, providing an emergency oil supply in the event of an oil outage.

[0032] The present invention provides a bearing transmission mechanism with an emergency lubrication function. An oil collecting groove 11, an oil storage groove 9, an oil outlet hole 12 and other structures are integrated on the bearing outer ring 2. Without adding an additional emergency lubrication system, the bearing's own structure can be used to reserve a certain amount of lubricating oil. The lubricating oil can flow directly into the bearing to cope with the lubricating oil interruption condition of the aircraft engine. While reducing the operating risk of the bearing, it also improves the structural compactness, simplicity and economy of the engine.

[0033] In an embodiment of the present invention, a plurality of oil reservoirs 9 are provided, arranged around an oil collection tank 11. The depth of the oil reservoirs 9 is lower than that of the oil collection tank 11. A channel 10 is provided in the oil collection tank 11, communicating with the oil reservoir 9 and sloping downward toward the oil reservoir 9. The oil reservoir 9 is used to store lubricating oil. The oil reservoir 9 is connected to the oil collection tank 11. The number of oil reservoirs 9 can be one, two, three, or more. In this embodiment, two oil reservoirs 9 are preferred. A channel 10 is provided between the oil collection tank 11 and the two oil reservoirs 9 located directly above the outer ring 2. The channel 10 slopes downward toward the oil reservoir 9, allowing any remaining oil in the oil collection tank 11 to flow into the oil reservoir 9 if lubricating oil flow is interrupted.

[0034] In this embodiment of the present invention, a sealing groove 6 is provided on the outer ring 2 or the bearing seat 17. This groove is used to mount a sealing ring 20, which forms a sealed area between the bearing seat 17 and the outer ring 2. Both the oil reservoir 9 and the oil collection groove 11 are located within this sealed area. The sealing groove 6 can be provided on either the outer ring 2 or the bearing seat 17. The sealing ring 20 forms a sealed area between the bearing seat 17 and the outer ring 2, thereby preventing oil leakage.

[0035] In an embodiment of the present invention, one of the outer ring 2 and the bearing seat 17 is provided with a groove 16, and the other is provided with a boss 21 embedded in the groove 16. The boss 21 is configured to cooperate with the groove 16 to position the oil collecting groove 11 directly above the bearing and prevent the outer ring 2 from rotating. Preferably, the groove 16 provided directly below the outer ring 2 is limited by the boss 21 on the bearing seat 17, thereby positioning the oil collecting groove 11 directly above the bearing and preventing the outer ring 2 from rotating. This allows the lubricating oil in the oil storage tank 9 and the oil collecting groove 11 to automatically flow into the bearing under the action of gravity, thereby providing emergency lubrication.

[0036] In this embodiment of the present invention, the oil collection groove 11 is located at the axial center of the outer peripheral wall of the outer ring 2. The oil reservoir 9 is located outside the oil collection groove 11. The oil outlet 12 is arranged at an angle toward the center of the rolling element 3, with one end facing the rolling element 3. The oil reservoir 9 surrounds the oil collection groove 11 and is located outside the oil collection groove. A channel 10 directs the lubricating oil in the oil collection groove 11 to the oil reservoir. The oil outlet 12 below the oil reservoir serves to automatically guide the lubricating oil from the oil reservoir 9 to the rolling element 3 and retainer 4 under the action of gravity, and then into the bearing interior. The inclined arrangement of the oil outlet 12 ensures that the lubricating oil in the various oil reservoirs 9 can flow to the center of the rolling element 3, providing better cooling and lubrication. Furthermore, if some oil reservoirs 9 are depleted of oil or cannot be supplied due to flight conditions, oil can continue to be supplied to the center of the rolling element 3 through other oil reservoirs 9.

[0037] In the embodiments of the present invention, the primary purpose is to address lubricating oil interruptions. The primary lubrication of the bearing is conventional under-ring lubrication, achieved through the axial oil grooves 15 and radial oil grooves 14 defined in the half inner ring 51 with the drawing grooves. Therefore, during normal oil supply, the oil flowing out of the oil outlet 12 should only serve as auxiliary lubrication, and its flow rate should not be excessive. Since the total oil flow rate of the multiple oil outlets 12 during normal oil supply is consistent with the oil flow rate of the oil hole 19, the size of the oil hole 19 determines the oil flow rate for auxiliary lubrication during normal oil supply. Under a given oil pressure, the larger the diameter of the oil hole 19, the greater the oil flow rate, placing a higher oil margin requirement on the oil system. Therefore, in the present invention, the diameter of the oil hole 19 is designed to be within the oil margin of the oil system. During normal oil supply, before the oil reservoir 9 is filled with lubricating oil, the oil flow rate through the oil outlet 12 is the same as during an oil outage, representing a natural outflow. Therefore, the diameter of the oil outlet 12 cannot be too large. On the one hand, an overly large diameter of the oil outlet 12 prevents the oil reservoir 9 from being filled with lubricating oil, resulting in an inability to effectively provide emergency lubricating oil during an oil outage. On the other hand, an overly large diameter of the oil outlet 12 causes the outflowing lubricating oil to be too dispersed, preventing it from effectively flowing into the bearing. During an oil outage, the oil passage 18 of the bearing seat 17 no longer supplies lubricating oil. At this point, the lubricating oil stored in the oil reservoir 9 automatically flows out through the oil outlet 12 under the action of gravity and enters the bearing, providing emergency lubricating oil.

[0038] like Figure 4 As shown, when the engine is normally oiling, the oil pressure in oil passage 18 of bearing seat 17 is high, and the lubricating oil flows along the oil flow path, quickly filling oil reservoir 9 with lubricating oil. In the event of an oil outage, the lubricating oil stored in oil reservoir 9 flows out through oil outlet 12 under gravity to provide emergency lubrication for the bearings. When the engine is normally oiling, the speed at which oil reservoir 9 fills with lubricating oil depends on the difference in lubricating oil flow rates between oil outlet 19 and oil outlet 12 under normal oil pressure. In the event of an oil outage, the duration of the oil stored in oil reservoir 9 depends on the lubricating oil flow rate at oil outlet 12 under natural flow conditions and the volume of oil reservoir 9.

[0039] In this embodiment, the diameter of the oil hole 19 is designed to be 0.5mm, the oil pressure in the oil circuit 18 is designed to be 0.5MPa during normal oil supply, the diameter of the two oil outlet holes 12 is designed to be 0.8mm, and the total volume of the oil collecting tank 11 and the oil storage tank 9 is designed to be 5ml. According to calculations, during normal oil supply, the oil flow rate of the oil hole 19 is 0.27L / min, and the average lubricating oil flow rate of the two oil outlet holes 12 in a natural outflow state is 0.02L / min. Therefore, the time it takes for the lubricating oil to fill the oil collecting tank 11 and the oil storage tank 9 is about 1.2s. When the lubricating oil is interrupted, the oil hole 19 almost stops discharging oil, and the oil stored in the oil collecting tank 11 and the oil storage tank 9 naturally flows out from the two oil outlet holes 12 under the action of gravity, as shown in FIG. Figure 5As shown, the stored oil in this embodiment can temporarily supply lubricating oil for about 15 seconds to the bearing for emergency use when the lubricating oil is interrupted.

[0040] In an embodiment of the present invention, the retainer 4 is further provided with a ramp surface 8 and an oil dam 7. The ramp surface 8 is arranged to extend outwardly along the axial direction of the retainer 4 and is arranged to be inclined radially outward at the end away from the rolling element 3. The oil dam 7 is arranged at the end of the ramp surface 8 away from the rolling element 3, and the height of the oil dam 7 is greater than the height of the ramp surface 8. The retainer 4 is designed to have an oil dam 7 structure, and the outer diameter surface is set as the ramp surface 8, so that the lubricating oil flowing out of the oil outlet 12 can overcome the influence of the rotation and swing of the retainer 4 and flow smoothly to the rolling element 3. Taking into account the influence of the rotation, deflection and vibration of the retainer 4 and the internal airflow on the lubricating oil flowing out of the oil outlet 12, the cross-sectional shape above the retainer 4 is designed to be a ramp surface 8 with an oil dam 7, so as to keep the lubricating oil inside the bearing as much as possible.

[0041] In an embodiment of the present invention, the bearing further comprises an inner ring, which is embedded within the inner side of the retainer 4 and abuts the rolling elements 3. The inner ring is provided with an oil inlet passage, the first end of which is connected to the aircraft engine's lubricating oil system, and the second end of which is disposed toward the rolling elements 3. The inner ring comprises two half rings: a half inner ring 1 and a half inner ring 5 with a drawing groove. The oil inlet passage is provided in the half inner ring 5 with the drawing groove. The oil inlet passage includes an axial oil groove 15 and a radial oil groove 14. The radial oil groove 14 is provided along the outer wall of the half inner ring 5 with the drawing groove. The axial oil groove 15 is provided on the inner wall of the half inner ring 5 with the drawing groove and is provided with a passage connecting to the normal oil supply system. The axial oil groove 15 and the radial oil groove 14 communicate with each other to direct lubricating oil into the bearing interior for conventional under-ring lubrication. The primary lubrication of the bearing is primarily through conventional under-ring lubrication, achieved through the axial oil grooves 15 and radial oil grooves 14 defined in the drawing grooved half inner ring 5. The lubricating oil flowing from the oil outlet 12 serves only as auxiliary lubrication. The primary lubrication of the bearing can also be achieved through other lubrication methods besides under-ring lubrication, and the lubrication structure can be modified as long as it does not affect the emergency lubrication structure of the present invention.

[0042] An embodiment of the second aspect of the present invention provides an aircraft engine, wherein the aircraft engine includes the bearing transmission mechanism with the emergency lubrication function.

[0043] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A bearing transmission mechanism with emergency lubrication function, used for installation on an aircraft engine, characterized in that: The bearing transmission mechanism with emergency lubrication function includes a bearing and a bearing seat (17), wherein the bearing is mounted on the bearing seat (17), the axis of the bearing seat (17) has an angle relative to the vertical direction, an oil passage (18) is provided inside the bearing seat (17), an oil hole (19) is provided below the oil passage (18), and the oil passage (18) and the oil hole (19) are used to allow the lubricating oil of the aircraft engine to pass through; the bearing includes an outer ring (2) and a retaining frame (4), a rolling body (3) is embedded in the retaining frame (4), and the outer ring ( 2) being sleeved on the outer side of the retaining frame (4) and pressed against the rolling element (3), the outer ring (2) comprising an oil collecting groove (11) and an oil storage groove (9), the oil collecting groove (11) being arranged just above the outer ring (2) and being communicated with the oil hole (19), the oil storage groove (9) being communicated with the oil collecting groove (11), the oil storage groove (9) being used to introduce the lubricating oil collected by the oil collecting groove (11) and to store the lubricating oil, the oil storage groove (9) being provided with an oil outlet hole (12) at the bottom thereof, the oil outlet hole (12) being used to flow the lubricating oil in the oil storage groove (9) to the rolling element (3); The retaining frame (4) is further provided with a slope surface (8) and an oil retaining dam (7), wherein the slope surface (8) is extended outwardly along the axial direction of the retaining frame (4) and is inclined radially outwardly at one end away from the rolling element (3), and the oil retaining dam (7) is provided at one end of the slope surface (8) away from the rolling element (3), and the height of the oil retaining dam (7) is greater than the height of the slope surface (8); The bearing further comprises an inner ring, the inner ring comprising a half inner ring (1) and a half inner ring (5) with a drawing groove, the half inner ring (5) with the drawing groove being provided with an oil inlet channel; The oil inlet channel comprises an axial oil groove (15) and a radial oil groove (14), wherein the radial oil groove (14) is arranged along the outer wall of the semi-inner ring (5) with the drawing groove, and the axial oil groove (15) is arranged on the inner wall of the semi-inner ring (5) with the drawing groove. The axial oil groove (15) and the radial oil groove (14) are interconnected to guide the lubricating oil of the normal oil supply system to the interior of the bearing.

2. The bearing transmission mechanism with emergency lubrication function according to claim 1, characterized in that: A plurality of the oil storage tanks (9) are provided, and the plurality of the oil storage tanks (9) are arranged around the oil collecting tank (11), and the depth of the oil storage tanks (9) is lower than the depth of the oil collecting tank (11).

3. The bearing transmission mechanism with emergency lubrication function according to claim 2, characterized in that: The oil collecting tank (11) is provided with a channel (10) that is in communication with the oil storage tank (9) and is inclined downward in a direction toward the oil storage tank (9).

4. The bearing transmission mechanism with emergency lubrication function according to claim 1, characterized in that: A sealing groove (6) is provided on the outer ring (2) or the bearing seat (17), and the sealing groove (6) is used to install a sealing ring (20). The sealing ring (20) is used to enclose a sealing area between the bearing seat (17) and the outer ring (2), and the oil storage tank (9) and the oil collection tank (11) are both provided in the sealing area.

5. The bearing transmission mechanism with emergency lubrication function according to claim 1, characterized in that: One of the outer ring (2) and the bearing seat (17) is provided with a groove (16), and the other is provided with a boss (21) embedded in the groove (16), and the boss (21) is used to cooperate with the groove (16) to position the oil collecting groove (11) directly above the bearing.

6. The bearing transmission mechanism with emergency lubrication function according to claim 1, characterized in that: The oil collecting groove (11) is provided at the axial center of the outer peripheral wall of the outer ring (2), the oil storage groove (9) is provided outside the oil collecting groove (11), and the oil outlet hole (12) is provided at an end thereof facing the rolling element (3) and is inclined in a direction toward the center of the rolling element (3).

7. The bearing transmission mechanism with emergency lubrication function according to claim 1, characterized in that: The semi-inner ring (5) with the drawing groove is embedded in the inner side of the retaining frame (4) and abuts against the rolling body (3); the first end of the oil inlet channel is used to connect to the lubricating oil system of the aircraft engine, and the second end of the oil inlet channel is arranged toward the rolling body (3).

8. An aircraft engine, characterized in that: The aircraft engine includes the bearing transmission mechanism with emergency lubrication function as described in any one of claims 1 to 7.

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