Lubricating oil tank oil supply device, aero-engine and aircraft

Abstract

The utility model relates to a lubricating oil tank oil supply device, an aero-engine and an aircraft, belongs to the technical field of aerospace, and solves the problem that in the prior art, a lubricating oil tank cannot continuously supply oil and ventilate under various postures of the aircraft. The device comprises an oil supply pipe, an oil suction pipe assembly and a breather pipe, the oil supply pipe is arranged in the lubricating oil tank and can rotate around the axis of the lubricating oil tank. The oil suction pipe assembly comprises an oil suction pipe which is vertically arranged on one side of the oil supply pipe. The central axis of the oil suction pipe and the central axis of the oil supply pipe are coplanar. A balance weight ball is arranged at a pipe opening of the oil suction pipe and used for enabling the oil suction pipe to be located below the oil supply pipe. According to the utility model, oil supply and ventilation of the aircraft can be completely and continuously completed in different postures such as diving, climbing and inverted flying.

Description

Technical Field

[0001] This utility model relates to the field of aerospace technology, and in particular to an oil tank supply device, an aero-engine, and an aircraft. Background Technology

[0002] The lubrication system of an aircraft engine primarily functions to lubricate, cool, and clean. The oil tank, as a crucial part of the lubrication system, stores oil, dissipates heat from the oil, settles impurities in the oil, separates air from the oil, and ensures the reusability of the engine oil. For aircraft requiring maneuverability, the oil tank must continuously supply oil to the engine during various flight attitudes, including dives, climbs, and inverted flight. Furthermore, the venting design within the oil tank must also be considered.

[0003] Currently, most lubrication systems for aircraft engines employ simple oil inlets, hose-type oil supply devices, or two-point / multi-point fixed oil outlets. Among these, the fixed oil outlet structure cannot fully guarantee continuous oil supply during aircraft dives, climbs, and inverted flight. The hoses of hose-type oil supply devices are made of rubber or plastic, which are difficult to form, have poor corrosion resistance, and short lifespan. They are also prone to aging, hardening, and brittleness at low temperatures. Furthermore, the design of the ventilation system that works with these devices is quite complex. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide an oil tank supply device, an aircraft engine, and an aircraft to solve the problem that the oil tank cannot continuously supply oil and ventilate under various aircraft attitudes.

[0005] The objective of this utility model is mainly achieved through the following technical solutions:

[0006] The first aspect of this utility model provides an oil supply device for a lubricating oil tank, comprising an oil supply pipe, an oil suction pipe assembly, and a vent pipe; the oil supply pipe is disposed inside the lubricating oil tank and is rotatable about its axis.

[0007] The oil suction pipe assembly includes an oil suction pipe, which is vertically disposed on the first side of the oil supply pipe;

[0008] The oil suction pipe is equipped with a counterweight ball at its inlet, which is used to position the oil suction pipe below the oil supply pipe.

[0009] Furthermore, it also includes a vent pipe, which is disposed on the second side of the oil supply pipe, with the first side and the second side located on opposite sides of the axis of the oil supply pipe.

[0010] Furthermore, the sidewall of the oil suction pipe is provided with a plurality of oil suction holes along the circumferential direction;

[0011] The number of oil suction holes near the pipe opening is greater than the number of oil suction holes at the top of the pipe opening; or the area of ​​the oil suction holes near the pipe opening is greater than the area of ​​the oil suction holes at the top of the pipe opening.

[0012] Furthermore, the oil suction hole is an elongated through hole, and the long side of the through hole is parallel to the axis of the oil suction pipe.

[0013] Furthermore, it also includes a connecting pipe, which is sleeved outside the oil supply pipe and rotates together with the oil supply pipe.

[0014] Furthermore, the connecting pipe has a first through hole and a second through hole, the first through hole being an oil suction pipe mounting hole and the second through hole being a vent pipe mounting hole; the wall thickness of the connecting pipe at the vent pipe mounting hole and the oil suction pipe mounting hole is less than the wall thickness of the connecting pipe at other locations.

[0015] Furthermore, a vent pipe mounting seat and an oil suction pipe mounting seat are respectively provided on both sides of the connecting pipe;

[0016] The connecting pipe is welded to at least one of the vent pipe mounting base and the oil suction pipe mounting base;

[0017] One end of the vent pipe is disposed on the vent pipe mounting base, and the other end is a suspended end, which is used for venting; one end of the oil suction pipe is disposed on the oil suction pipe mounting base, and the other end is a suspended end; the suspended end of the oil suction pipe is placed in the oil.

[0018] Furthermore, the oil suction pipe assembly also includes a filter screen, which is sleeved on the outside of the oil suction pipe.

[0019] Furthermore, the oil suction pipe mounting base also includes anti-rotation slots, which are disposed at both ends of the flange outside the oil suction pipe mounting base.

[0020] A second aspect of this utility model provides an aircraft engine, including the aforementioned oil tank supply device.

[0021] A third aspect of this utility model is to provide an aircraft including the aforementioned aircraft engine.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] (1) Compared with the existing oil tank supply devices, most of them adopt simple oil supply ports, hose-type oil supply devices, two-point / multi-point fixed oil outlets and other oil tank structures. The fixed oil outlet structure cannot completely guarantee the continuous oil supply for aircraft in flight attitudes such as dive, climb, and inverted flight. The hose of the hose-type oil supply device is made of rubber or plastic, which is difficult to form and has poor corrosion resistance and short life. It is easy to age, harden and become brittle at low temperature. The ventilation system designed in conjunction with it is also more complicated. The oil tank supply ventilation device of this utility model has an oil supply pipe that can be rotatably set inside the oil tank, and an oil suction pipe is set on the first side of the oil supply pipe. The oil suction pipe is equipped with a counterweight ball. Under the action of the counterweight ball, the oil supply pipe can rotate so that the oil suction port is always kept at the bottom of the oil tank and immersed in oil. This allows the aircraft to complete the oil supply completely and continuously in different attitudes such as dive, climb, and inverted flight, ensuring the good working condition of the engine. Moreover, the oil supply device of this utility model has a simple structure, is easy to install and disassemble, and is suitable for different oil tanks.

[0024] (2) The vent pipe of this utility model is set on the second side of the fuel supply pipe and on the opposite side of the fuel suction pipe. While the fuel suction pipe is always downward, the vent pipe is always upward, and the vent is always above the fuel tank, so that the aircraft can ventilate in different attitudes.

[0025] (3) In this utility model, the oil suction holes are arranged circumferentially along the side wall of the oil suction pipe. In order to ensure that the oil suction pipe can fully absorb oil even when the oil volume in the oil tank is small and the liquid level is low, the number of oil suction holes near the pipe opening is greater than the number of oil suction holes at the top of the pipe opening, or the area of ​​the oil suction holes near the pipe opening is greater than the area of ​​the oil suction holes at the top of the pipe opening, so as to enhance the oil suction capacity. In this utility model, the oil suction holes are set as elongated through holes, and the long side of the through hole is parallel to the axis of the oil suction pipe, that is, consistent with the direction of oil flow, so that when the oil level is low, the contact line between the through hole and the oil is longer and the oil suction area is larger; and the long side of the elongated through hole is parallel to the axis of the oil suction pipe, so as to avoid the pipe wall strength from decreasing due to the hole being too long.

[0026] (4) To reduce the difficulty of drilling, improve installation accuracy, and meet the requirements of lightweight design, the wall thickness of the connecting pipe is set unevenly. The wall thickness of the connecting pipe at the vent pipe mounting hole and the oil suction pipe mounting hole is smaller than that at other locations, so that drilling is easier and the connection between the oil suction pipe and the vent pipe and the oil supply pipe is closer. This makes it easier to fix the oil suction pipe and the vent pipe more tightly by welding or other methods after insertion, reducing assembly errors caused by excessive wall thickness.

[0027] (5) One end of the suction pipe is set in the suction pipe mounting base, and the other end is a suspended end. The suspended end is immersed in the lubricating oil and is used for suction. One end of the vent pipe is set in the vent pipe mounting base, and the other end is a suspended end. The pipe opening of the suspended end faces upward and is located in the air chamber above the lubricating oil tank for ventilation.

[0028] (6) Due to the large weight of the oil suction pipe end, in order to prevent the relative position of the oil suction pipe and the intermediate connecting pipe from changing under the action of external forces such as gravity and vibration, the oil suction pipe mounting base is also equipped with an anti-rotation groove.

[0029] (7) In order to make the friction between the support base and the two ends of the oil supply pipe less than the torque generated by the weight of the counterweight ball, so that the oil supply pipe rotates with the movement, the vent pipe remains upward, and the oil suction pipe remains downward, so as to stabilize the fuel supply of the aircraft engine and avoid cavitation due to oil level deviation, the counterweight ball is set to be a steel ball.

[0030] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0031] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0032] Figure 1 This is a schematic diagram of the oil supply device for the lubricating oil tank in Example 1;

[0033] Figure 2 This is a schematic diagram of the oil suction pipe in Example 1;

[0034] Figure 3 This is a schematic diagram of the filter screen in Example 1;

[0035] Figure 4 This is a cross-sectional view of the connecting pipe in Example 1;

[0036] Figure 5 This is a schematic diagram of the main structure of the connecting pipe in Example 1;

[0037] Figure 6 This is a schematic diagram of the anti-rotation slot in Example 1.

[0038] Figure label:

[0039] 1-Oil tank, 11-Support seat, 2-Oil supply pipe, 3-Oil suction pipe assembly, 31-Oil suction pipe, 311-Oil suction hole, 32-Counterweight ball, 321-Counterweight ball retaining ring, 33-Filter screen, 331-Filter screen retaining ring, 4-Ventil pipe, 5-Connecting pipe assembly, 51-Connecting pipe, 511-Connecting pipe retaining ring, 512-Oil suction pipe mounting port, 5121-Oil suction pipe mounting seat groove, 5122-Anti-rotation slot threaded mounting hole, 513-Ventil pipe mounting hole, 514-Oil supply pipe mounting hole, 52-Ventil pipe mounting seat, 521-Sealing ring, 53-Oil suction pipe mounting seat, 531-Anti-rotation slot. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] Example 1

[0042] A specific embodiment of this utility model is as follows: Figure 1 As shown, an oil supply device for a lubricating oil tank 1 is disclosed, including an oil supply pipe 2, an oil suction pipe assembly 3, and a vent pipe 4; the oil supply pipe 2 is disposed inside the lubricating oil tank 1, and the oil supply pipe 2 can rotate around its axis;

[0043] The oil suction pipe assembly 3 includes an oil suction pipe 31, which is disposed on the first side of the oil supply pipe 2;

[0044] The inlet of the oil suction pipe 31 is equipped with a counterweight ball 32, which is used to position the oil suction pipe 31 below the oil supply pipe 2.

[0045] Compared to existing oil tank supply devices, which mostly employ simple oil inlets, hose-type oil supply devices, or two-point / multi-point fixed oil outlets, the fixed oil outlet structure cannot fully guarantee continuous fuel supply during aircraft flight attitudes such as dive, climb, and inverted flight. Hose-type oil supply devices use rubber or plastic hoses, which are difficult to mold, have poor corrosion resistance, short lifespan, and are prone to aging, hardening, and brittleness at low temperatures. The corresponding ventilation system design is also complex. In this embodiment, the oil supply pipe 2 is rotatably positioned in the middle of the oil tank 1, and the oil suction pipe 31 is positioned on the first side of the oil supply pipe 2. A counterweight ball 32 is provided at the inlet of the oil suction pipe 31. Under the action of the counterweight ball 32, the oil supply pipe 2 can rotate, ensuring that the oil suction port is always at the bottom of the oil tank 1 and immersed in oil. This allows the aircraft to continuously supply fuel during different flight attitudes such as dive, climb, and inverted flight, ensuring good engine operation. Furthermore, the fuel supply device in this embodiment has a simple structure and is easy to install and disassemble.

[0046] Specifically, the oil supply pipe 2, the oil suction pipe assembly 3, and the vent pipe 4 are all located inside the lubricating oil tank 1.

[0047] The oil supply pipe 2 is a circular pipe. Specifically, the central axis of the oil supply pipe 2 is perpendicular to the height direction of the oil tank 1 during use, and both ends of the oil supply pipe 2 are connected to the inner wall of the oil tank 1.

[0048] For example, the inner wall of the oil tank 1 is provided with support seats 11 on both sides, and the two ends of the oil supply pipe 2 are disposed in the support seats 11 and can rotate within the support seats 11. The support seats 11 are used to support and guide the rotation of the oil supply pipe 2 so as to achieve the responsiveness of the oil supply pipe 2 when the aircraft is in different flight attitudes.

[0049] To ensure that the oil suction pipe 31 is located at the bottom of the lubricating oil tank, the oil suction pipe 31 is positioned on the first side of the oil supply pipe 2. Specifically, one end of the oil suction pipe 31 is fixed, and the other end is a suspended end, which is immersed in the lubricating oil for oil suction.

[0050] Furthermore, such as Figure 2 As shown, a counterweight ball 32 is provided at the opening of the oil suction pipe 31. To ensure that the frictional force between the support base 11 and both ends of the oil supply pipe 2 is less than the torque generated by the weight of the counterweight ball 32, allowing the oil supply pipe 2 to rotate accordingly, the vent pipe 4 to remain upward, and the oil suction pipe 31 to remain downward, thus stabilizing the fuel supply to the aircraft engine and preventing cavitation due to oil level deviation, in this embodiment, the counterweight ball 32 is made of metal. Preferably, the counterweight ball 32 is a steel ball.

[0051] Furthermore, counterweight ball retaining rings 321 are provided on the upper and lower parts of the counterweight ball 32 along the inner wall of the oil suction pipe 31 to limit the counterweight ball 32 and prevent it from falling.

[0052] The sidewall of the oil suction pipe 31 is provided with a plurality of oil suction holes 311. Exemplarily, the oil suction holes 311 are arranged circumferentially along the sidewall of the oil suction pipe 31. Since the engine has a minimum filler capacity and a minimum available oil capacity, the height of the oil suction holes 311 is less than the liquid level of the minimum filler capacity and the minimum available oil capacity. Therefore, when the opening of the oil suction pipe 31 is kept downward, the oil suction holes 311 always remain in the oil suction state.

[0053] Preferably, in order to ensure that the oil suction pipe 31 can fully suction oil even when the oil volume in the oil tank is small and the liquid level is low, the number of oil suction holes 311 near the pipe opening is greater than the number of oil suction holes 311 at the top of the pipe opening, or the area of ​​the oil suction holes 311 near the pipe opening is greater than the area of ​​the oil suction holes 311 at the top of the pipe opening, so that the flow area of ​​the oil suction holes 311 near the pipe opening is greater than the flow area of ​​the oil suction holes 311 at the top of the pipe opening, thereby enhancing the oil suction capacity.

[0054] Preferably, in this embodiment, the oil suction hole 311 is configured as an elongated through hole, with the long side of the through hole parallel to the axis of the oil suction pipe 31, that is, consistent with the direction of oil flow. This ensures that when the oil level is low, the contact line between the through hole and the oil is longer, resulting in a larger oil suction area. Furthermore, the long side of the elongated through hole is parallel to the axis of the oil suction pipe 31, preventing a decrease in pipe wall strength due to excessive hole length. The sum of the flow areas of multiple elongated through holes is greater than the minimum flow area required by the engine lubricating oil supply pipe 2, ensuring that properly filtered lubricating oil can smoothly enter the oil suction pipe 31.

[0055] The oil suction pipe assembly 3 also includes a filter screen 33 for filtering impurities from the oil suction port 311 of the lubricating oil tank 1. Figure 3 As shown, the filter screen 33 is cylindrical and is fitted over the outside of the oil suction pipe 31. A filter screen retaining ring 331 is provided below the filter screen 33 outside the oil suction pipe 31 to limit the downward movement of the filter screen 33.

[0056] The vent pipe 4 is located on the second side of the axis of the oil supply pipe 2. It should be noted that the first side and the second side are located on opposite sides of the axis of the oil supply pipe 2. Specifically, one end of the vent pipe 4 is fixed, and the other end is a suspended end with the pipe opening facing upward, located in the air chamber above the lubricating oil tank 1, for ventilation.

[0057] Preferably, the central axis of the vent pipe 4 is coplanar with the central axes of the oil supply pipe 2 and the oil suction pipe 31. The central axes of the vent pipe 4 and the oil suction pipe 31 are both perpendicular to the central axis of the oil supply pipe 2, so that the oil suction pipe 31 always remains downward while the vent pipe 4 always remains upward, and the vent is always above the lubricating oil tank 1, so that the aircraft can ventilate in different attitudes.

[0058] Furthermore, it also includes a connecting pipe assembly 5. The connecting pipe assembly 5 includes a connecting pipe 51, which is sleeved on the outside of the oil supply pipe 2 and rotates together with the oil supply pipe 2. Figure 1 As shown, connecting pipe retaining rings 511 are provided at both ends of the connecting pipe 51 to limit the connecting pipe 51 and prevent it from moving axially. Figure 5 As shown, the connecting pipe 51 has a first through hole on its first side, which is an oil suction pipe mounting hole 512; and a second through hole on its second side, which is a vent pipe mounting hole 513; the middle part is hollow, for fitting onto the oil supply pipe 2. Correspondingly, the oil supply pipe 2 has through holes on both sides corresponding to the positions of the first and second through holes, for installing the oil suction pipe 31 and the vent pipe 4.

[0059] Preferably, such as Figure 5As shown, to reduce the difficulty of drilling, improve installation accuracy, and meet the requirements of lightweight design, the wall thickness of the connecting pipe 51 is not uniform. Specifically, the wall thickness of the connecting pipe 51 at the vent pipe mounting hole 513 and the oil suction pipe mounting hole 512 is smaller than that at other locations. This makes drilling easier and ensures a closer fit between the oil suction pipe 31 and the vent pipe 4 and the oil supply pipe 2. This facilitates tighter fixing of the oil suction pipe 31 and the vent pipe 4 after insertion by welding or other methods, reducing assembly errors caused by excessive wall thickness.

[0060] Furthermore, the connecting pipe assembly 5 also includes a vent pipe mounting seat 52 and an oil suction pipe mounting seat 53 disposed on both sides of the connecting pipe 51, for connecting the vent pipe 4 and the oil suction pipe 31, respectively. Specifically, the vent pipe mounting seat 52 and the oil suction pipe mounting seat 53 are flange mounting seats. A sealing ring 521 is provided between the vent pipe mounting seat 52 and the connecting pipe 51 for sealing, preventing lubricating oil from entering the vent pipe 4. Figure 5 As shown, the connecting pipe 51 is provided with an oil suction pipe mounting seat groove 5121, and the oil suction pipe mounting seat 53 is disposed in the oil suction pipe mounting seat groove 5121.

[0061] Because the end of the oil suction pipe 31 is relatively heavy, in order to prevent the relative position of the oil suction pipe 31 and the intermediate connecting pipe 51 from changing under the action of external forces such as gravity and vibration, such as Figure 4 As shown, the suction pipe mounting base 53 is also provided with an anti-rotation groove 531. The anti-rotation groove 531 is a rectangular groove, located at both ends of the flange on the outside of the suction pipe mounting base 53. Figure 6 As shown, a bolt is provided in the anti-rotation slot 531, which extends into the anti-rotation slot threaded mounting hole 5122 in the oil suction pipe mounting seat groove 5121 to fix the oil suction pipe mounting seat 53 to the connecting pipe 51.

[0062] The suction pipe 31 and the vent pipe 4 are respectively mounted on the vent pipe mounting base 52 and the suction pipe mounting base 53. Preferably, both the vent pipe mounting base 52 and the suction pipe mounting base 53 are welded to the connecting pipe 51, thus eliminating leakage issues. However, it is not excluded that at least one of them may be installed without welding.

[0063] In this embodiment, the oil supply pipe 2, the connecting pipe assembly 5, the oil suction pipe assembly 3, and the vent pipe 4 are all detachably connected to each other and to the lubricating oil tank 1. The structure is simple, easy to install and disassemble, and suitable for different oil tanks.

[0064] Example 2

[0065] This utility model also provides an aircraft engine, including the oil tank supply device of Embodiment 1.

[0066] Compared to existing aircraft engines that rely on gravity for fuel supply, which are prone to insufficient lubrication and lubrication failure during inverted flight or large tilt angles, and where lubrication may detach from the oil intake port during attitude changes, resulting in lubrication interruption, the aircraft engine in this embodiment uses the oil tank supply device of Embodiment 1. The oil intake pipe 31 and the vent pipe 4 are located on both sides of the oil supply pipe 2, and the oil intake port is equipped with a counterweight ball 32 so that the oil intake port always draws oil downwards and the vent pipe 4 always vents air upwards, ensuring that the engine has good fuel supply and ventilation performance, so that the engine has no attitude restrictions and can work stably under extreme attitudes such as inverted flight and roll.

[0067] Example 3

[0068] This utility model also provides an aircraft, including the aircraft engine in Embodiment 2.

[0069] Compared to existing technologies where aircraft are prone to fuel supply interruptions during inverted flight or at large tilt angles, and where fuel may detach from the fuel intake during attitude changes, resulting in a high risk of mission interruption; and where fuel supply limitations prevent extreme maneuvers, limiting the range of motion to conventional pitch and turn maneuvers; the aircraft in this embodiment has the aero-engine of Embodiment 2, which features continuous fuel supply across all attitudes and excellent ventilation performance, ensuring stable engine operation under changing attitudes, and has significant advantages in flight adaptability, mission capability, and safety.

[0070] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil supply device for a lubricating oil tank, characterized in that, It includes an oil supply pipe (2) and an oil suction pipe assembly (3); the oil supply pipe (2) is located inside the lubricating oil tank (1), and the oil supply pipe (2) can rotate around its axis; The oil suction pipe assembly (3) includes an oil suction pipe (31), which is disposed on the first side of the oil supply pipe (2); The oil suction pipe (31) is provided with a counterweight ball (32) at its opening. The counterweight ball (32) is used to position the oil suction pipe (31) below the oil supply pipe (2).

2. The oil supply device for the lubricating oil tank according to claim 1, characterized in that, It also includes a vent pipe (4), which is disposed on the second side of the oil supply pipe (2), with the first side and the second side located on opposite sides of the axis of the oil supply pipe (2).

3. The oil supply device for the lubricating oil tank according to claim 1, characterized in that, The sidewall of the oil suction pipe (31) is provided with a plurality of oil suction holes (311) in the circumferential direction; The number of oil suction holes (311) near the pipe opening is greater than the number of oil suction holes (311) at the upper part of the pipe opening; or the area of ​​the oil suction holes (311) near the pipe opening is greater than the area of ​​the oil suction holes (311) at the upper part of the pipe opening.

4. The oil supply device for the lubricating oil tank according to claim 3, characterized in that, The oil suction hole (311) is an elongated through hole, and the long side of the through hole is parallel to the axis of the oil suction pipe (31).

5. The oil supply device for the lubricating oil tank according to claim 1, characterized in that, It also includes a connecting pipe assembly (5), which includes a connecting pipe (51); the connecting pipe (51) is sleeved on the outside of the oil supply pipe (2) and rotates together with the oil supply pipe (2).

6. The oil supply device for the lubricating oil tank according to claim 5, characterized in that, The connecting pipe (51) has a first through hole and a second through hole. The first through hole is an oil suction pipe mounting hole (512), and the second through hole is a vent pipe mounting hole (513). The wall thickness of the connecting pipe (51) at the vent pipe mounting hole (513) and the oil suction pipe mounting hole (512) is less than the wall thickness of the connecting pipe (51) at other locations.

7. The oil supply device for the lubricating oil tank according to claim 5, characterized in that, The connecting pipe (51) is provided with a vent pipe mounting seat (52) and an oil suction pipe mounting seat (53) on both sides respectively; The connecting pipe (51) is welded to at least one of the vent pipe mounting base (52) and the oil suction pipe mounting base (53); One end of the vent pipe (4) is set on the vent pipe mounting base (52), and the other end is a suspension end. The suspension end of the vent pipe (4) is used for ventilation. One end of the oil suction pipe (31) is set on the oil suction pipe mounting base (53), and the other end is a suspension end. The suspension end of the oil suction pipe (31) is placed in the oil.

8. The oil supply device for the lubricating oil tank according to claim 1, characterized in that, The oil suction pipe assembly (3) also includes a filter screen (33), which is sleeved on the outside of the oil suction pipe (31).

9. The oil supply device for the lubricating oil tank according to claim 7, characterized in that, The oil suction pipe mounting base (53) also includes an anti-rotation groove (531), which is provided at both ends of the flange outside the oil suction pipe mounting base (53).

10. An aircraft engine, characterized in that, Includes the oil supply device for the lubricating tank as described in any one of claims 1-9.

11. An aircraft, characterized in that, Including the aircraft engine as described in claim 10.

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