Lubricating oil pump unit for aerospace unmanned aerial vehicle

Abstract

The lubricating oil pump unit comprises a protective shell, a partition plate is fixedly mounted in the protective shell, an oil storage tank is fixedly mounted on the rear side of the inner wall of the protective shell, an oil conveying pipeline tool is arranged between the oil storage tank and the partition plate, and a mounting shell is arranged on one side of the protective shell; an air heating mechanism used for preheating the oil conveying pipeline tool is arranged in the mounting shell. The extension end of an electric push rod is controlled to be shrunk to be shortest, an electric heating plate makes contact with a heat conduction plate, then an air pump is started, cold air with moisture filtered out is injected into a regulation and control cylinder, a piston is matched to extrude a thrust spring, when the thrust spring is shrunk to be shortest, the cold air enters an S-shaped heat conduction pipe, and the electric heating plate transmits heat into the S-shaped heat conduction pipe through the heat conduction plate. When the lubricating oil is cooled, cold air entering the protective shell is heated, generated hot airflow is injected into the protective shell and preheats the oil conveying pipeline tool, the viscosity of the lubricating oil is prevented from being increased after the lubricating oil is cooled, blockage is avoided, and effective conveying of the lubricating oil is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace unmanned aerial vehicles (UAVs), and in particular to a lubricating oil pump unit for aerospace unmanned aerial vehicles (UAVs). Background Art

[0002] The primary function of a lubricating oil pump unit for aerospace drones is to provide continuous and stable lubricating oil circulation for key components such as the engine and transmission system, ensuring reduced friction and wear and lowering thermal loads during high-speed operation. Furthermore, the lubricating oil pump unit must operate stably within a wide temperature range of -55°C to +125°C, and must withstand harsh conditions such as high altitude, low air pressure, and strong radiation.

[0003] The existing lubricating oil pump unit is not started all the time during the flight of the UAV, but works intermittently according to the engine operating status, lubrication requirements and preset logic; when the UAV is flying at high altitude, the oil pipeline used to transport the lubricating oil is in a low-temperature state, and the viscosity of the lubricating oil in contact with the oil pipeline increases, which can easily clog the oil pipeline and make it inconvenient to effectively transport the lubricating oil; at the same time, the lubricating oil pump unit needs to be cooled during its operation. Since the external environment is in a low temperature environment, the temperature difference between the cold air and the lubricating oil pump unit is large, and cooling by air cooling can easily cause damage to the lubricating oil pump unit. Summary of the Invention

[0004] The technical problems solved by this solution are:

[0005] (1) How to solve the problem that the oil pipeline used to transport lubricating oil is in a low temperature state, the viscosity of the lubricating oil in contact with the oil pipeline increases, and the oil pipeline is easily blocked, making it inconvenient to effectively transport the lubricating oil;

[0006] (2) How to solve the problem that due to the low temperature environment outside, the temperature difference between the cold air and the oil pipeline is large, and air cooling can easily cause damage to the lubricating oil pump unit.

[0007] The objectives of the present invention can be achieved through the following technical solutions: a lubricating oil pump unit for a space drone, comprising a protective shell, a partition fixedly installed inside the protective shell, an oil storage tank fixedly installed on the rear side of the inner wall of the protective shell, an oil pipeline tooling provided between the oil storage tank and the partition, the oil pipeline tooling being conventional, a mounting shell provided on one side of the protective shell, and a wind heating mechanism provided inside the mounting shell for preheating the oil pipeline tooling;

[0008] The wind heating mechanism includes an electric push rod fixedly connected to the inner wall of the mounting shell, a regulating cylinder is fixedly inserted on the mounting shell on one side of the electric push rod, and an insulation unit for regulating the temperature inside the protective shell is provided on the side of the regulating cylinder away from the electric push rod.

[0009] A further technical improvement of the present invention is that the electric push rod is arranged horizontally, and an electric heating plate is fixedly installed on the protruding end of the electric push rod, and a heat conduction port is opened on the side of the protective shell close to the mounting shell, and the position of the heat conduction port corresponds to the position of the electric heating plate.

[0010] A further technical improvement of the present invention is that a heat conducting plate is fixedly installed inside the mounting shell, the position of the heat conducting plate corresponds to the position of the electric heating plate, and an S-shaped heat conducting pipe is fixedly installed on the side of the heat conducting plate away from the electric heating plate, the input end of the S-shaped heat conducting pipe is connected to the side of the regulating cylinder, and the input end of the S-shaped heat conducting pipe is close to the electric push rod.

[0011] A further technical improvement of the present invention is that: the protruding end of the electric push rod movably passes through the heat conduction plate, and an air pump is fixedly installed on one side of the electric push rod, and a filter box for filtering moisture in the air is provided between the air pump and the regulating cylinder, the input end of the filter box is connected to the output end of the air pump, and the output end of the filter box is connected to an air outlet pipe, and the output end of the air outlet pipe is connected to the side of the regulating cylinder away from the heat conduction plate.

[0012] A further technical improvement of the present invention is that: an insulation plate is fixedly installed on the inner wall of the mounting shell of the electric push rod away from the regulating cylinder, the output end of the S-shaped heat conducting pipe is fixedly penetrated by the insulation plate and is fixedly connected with the insulation pipe, the output end of the insulation pipe is fixedly penetrated by the protective shell, and the output end of the insulation pipe is arranged toward the oil pipeline tooling; by controlling the extended end of the electric push rod to shrink to the shortest, so that the electric heating plate contacts the heat conducting plate, and then turning on the air pump, so that the air pump injects the moist and cold air in the external environment into the filter box, and then injects the cold air that has filtered out the moisture into the regulating cylinder, thereby increasing the pressure therein. Cooperating with the piston to squeeze the thrust spring, when the thrust spring contracts to its shortest, cold air enters the S-shaped heat pipe, and the electric heating plate transfers heat to the S-shaped heat pipe through the heat conduction plate, heating the cold air entering it. The generated hot air flow is injected into the protective shell through the insulation pipe, and effectively preheated towards the oil pipeline tooling to prevent the viscosity of the lubricating oil in contact with it from increasing after cooling, avoiding blockage and ensuring effective transmission of the lubricating oil. At this time, the movement of the piston and the transmission rod will drive the L-shaped rod to flip, so that the insulation plug is separated from the air vent, which is convenient for the discharge of air in the protective shell.

[0013] A further technical improvement of the present invention is that the insulation unit includes a rotating seat fixedly connected to the back of the protective shell, an L-shaped rod is rotatably arranged on the rotating seat, an insulation plug is fixedly installed at one end of the L-shaped rod, and a connecting plate is fixedly installed at the other end of the L-shaped rod.

[0014] A further technical improvement of the present invention is that: a transmission rod is movably inserted into the control cylinder, a piston is fixedly installed at one end of the transmission rod, a thrust spring is provided between the end of the piston away from the transmission rod and the inner wall of the control cylinder, and the other end of the transmission rod is movably connected to the connecting plate through a shift rod; after the preheating of the oil pipeline tooling is completed, the protruding end of the electric push rod is controlled to extend to half the length, and the air around the heat conduction plate and the S-shaped heat conduction pipe is heated by the electric heating plate, thereby increasing the temperature of the cold air in the S-shaped heat conduction pipe, reducing the temperature difference between the cold air injected into the protective shell and the oil pipeline tooling, and avoiding damage to the lubricating oil pump unit by air cooling.

[0015] A further technical improvement of the present invention is that a ventilation hole is provided on the back of the protective shell, the position of the ventilation hole is staggered with the position of the oil storage tank, and the position of the ventilation hole corresponds to the position of the insulation plug.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the present invention is in use, the extended end of the electric push rod is controlled to be retracted to the shortest, so that the electric heating plate contacts the heat conducting plate, and then the air pump is turned on to allow the air pump to inject the moist and cold air in the external environment into the filter box, and then inject the cold air with the moisture filtered out into the control cylinder to increase the pressure therein, and cooperate with the piston to squeeze the thrust spring. When the thrust spring is retracted to the shortest, the cold air enters the S-shaped heat conducting pipe, and the electric heating plate transfers the heat to the S-shaped heat conducting pipe through the heat conducting plate, heating the cold air entering therein. The generated hot air flow is injected into the protective shell through the insulation pipe, and is effectively preheated towards the oil pipeline tooling to prevent the viscosity of the lubricating oil in contact with it from increasing after cooling, avoiding blockage, and ensuring effective transmission of the lubricating oil.

[0018] When the present invention is in use, after completing the preheating of the oil pipeline tooling, the extended end of the electric push rod is controlled to extend to half the length, and the air around the heat conducting plate and the S-shaped heat conducting pipe is heated by the electric heating plate, thereby increasing the temperature of the cold air in the S-shaped heat conducting pipe, reducing the temperature difference between the cold air injected into the protective shell and the oil pipeline tooling, and avoiding damage to the lubricating oil pump unit due to air cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall appearance of the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the overall top structure of the present invention;

[0022] Figure 3This is a schematic diagram of the wind heating mechanism structure of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of the wind heating mechanism structure of the present invention;

[0024] Figure 5 This is a schematic structural diagram of the heat preservation unit of the present invention;

[0025] Figure 6 This is a three-dimensional schematic diagram of the heat preservation unit structure of the present invention;

[0026] Figure 7 It is a schematic structural perspective view of the oil pipeline fixture and partition of the present invention.

[0027] In the figure: 1. Protective shell; 2. Mounting shell; 3. Air heating mechanism; 4. Insulation plate; 5. Insulation pipe; 6. Second oil pump; 7. First oil pump; 8. Partition; 9. Oil pipeline tooling; 10. Air vent; 11. Heat transfer port; 12. Oil storage tank; 31. Insulation unit; 32. Control cylinder; 33. Filter box; 34. Electric push rod; 35. S-shaped heat transfer pipe; 36. Electric heating plate; 37. Piston; 38. Exhaust pipe; 39. Heat transfer plate; 311. Connecting plate; 312. Push rod; 313. Transmission rod; 314. Rotating seat; 315. Insulation plug; 316. L-shaped rod. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 7 As shown, a lubricating oil pump unit for a space drone includes a protective shell 1, a partition 8 is fixedly installed inside the protective shell 1, an oil storage tank 12 is fixedly installed on the rear side of the inner wall of the protective shell 1, an oil pipeline tooling 9 is arranged between the oil storage tank 12 and the partition 8, and the oil pipeline tooling 9 is the existing technology. A mounting shell 2 is provided on one side of the protective shell 1, and a wind heating mechanism 3 for preheating the oil pipeline tooling 9 is provided inside the mounting shell 2.

[0030] See also Figure 2 and Figure 3 As shown, the above-mentioned wind heating mechanism 3 includes an electric push rod 34 fixedly connected to the inner wall of the mounting shell 2, and a regulating cylinder 32 is fixedly inserted on the mounting shell 2 on one side of the electric push rod 34. The side of the regulating cylinder 32 away from the electric push rod 34 is provided with an insulation unit 31 for adjusting the temperature inside the protective shell 1.

[0031] See also Figure 2and Figure 3 As shown, the above-mentioned electric push rod 34 is arranged horizontally, and an electric heating plate 36 is fixedly installed on the protruding end of the electric push rod 34. A heat conduction port 11 is opened on the side of the protective shell 1 close to the mounting shell 2, and the position of the heat conduction port 11 corresponds to the position of the electric heating plate 36.

[0032] See also Figure 3 and Figure 4 As shown, a heat conducting plate 39 is fixedly installed inside the above-mentioned mounting shell 2, and the position of the heat conducting plate 39 corresponds to the position of the electric heating plate 36, and an S-shaped heat conducting pipe 35 is fixedly installed on the side of the heat conducting plate 39 away from the electric heating plate 36, and the input end of the S-shaped heat conducting pipe 35 is connected to the side of the regulating cylinder 32, and the input end of the S-shaped heat conducting pipe 35 is close to the electric push rod 34.

[0033] See also Figure 3 and Figure 4 As shown, the protruding end of the above-mentioned electric push rod 34 is movable through the heat conducting plate 39, and an air pump is fixedly installed on one side of the electric push rod 34. A filter box 33 for filtering moisture in the air is provided between the air pump and the regulating cylinder 32. The input end of the filter box 33 is connected to the output end of the air pump, and the output end of the filter box 33 is connected to the air outlet pipe 38. The output end of the air outlet pipe 38 is connected to the side of the regulating cylinder 32 away from the heat conducting plate 39.

[0034] See also Figure 2 and Figure 3 As shown, the above-mentioned electric push rod 34 is fixedly installed with an insulation plate 4 on the inner wall of the mounting shell 2 away from the regulating cylinder 32, the output end of the S-shaped heat-conducting pipe 35 is fixedly penetrated by the insulation plate 4 and is fixedly connected with the insulation pipe 5, the output end of the insulation pipe 5 is fixedly penetrated by the protective shell 1, and the output end of the insulation pipe 5 is arranged toward the oil pipeline tooling 9; by controlling the extended end of the electric push rod 34 to shrink to the shortest, the electric heating plate 36 is in contact with the heat-conducting plate 39, and then the air pump is turned on, so that the air pump injects the wet and cold air in the external environment into the filter box 33, and then injects the cold air that has filtered out the moisture into the regulating cylinder 32, thereby increasing the pressure therein, and cooperating with the piston 37 to squeeze Thrust spring, when the thrust spring is contracted to its shortest, cold air enters the S-shaped heat pipe 35, and the electric heating plate 36 transfers heat to the S-shaped heat pipe 35 through the heat conducting plate 39, heating the cold air entering therein. The generated hot air flow is injected into the protective shell 1 through the insulation pipe 5, and is effectively preheated toward the oil pipeline tooling 9 to prevent the viscosity of the lubricating oil in contact with it from increasing after being cooled, thereby avoiding blockage and ensuring effective transmission of the lubricating oil. At this time, the movement of the piston 37 and the transmission rod 313 will drive the L-shaped rod 316 to flip, so that the insulation plug 315 is separated from the air vent 10, facilitating the discharge of air in the protective shell 1.

[0035] See also Figure 2 and Figure 5As shown, the above-mentioned insulation unit 31 includes a rotating seat 314 fixedly connected to the back of the protective shell 1, and an L-shaped rod 316 is rotatably provided on the rotating seat 314. An insulation plug 315 is fixedly installed at one end of the L-shaped rod 316, and a connecting plate 311 is fixedly installed at the other end of the L-shaped rod 316.

[0036] See also Figure 2 、 Figure 3 and Figure 6 As shown, a transmission rod 313 is movably inserted into the above-mentioned control cylinder 32, and a piston 37 is fixedly installed at one end of the transmission rod 313. A thrust spring is provided between the end of the piston 37 away from the transmission rod 313 and the inner wall of the control cylinder 32, and the other end of the transmission rod 313 is movably connected to the connecting plate 311 through the shift rod 312; after completing the preheating of the oil pipeline tooling 9, the protruding end of the electric push rod 34 is controlled to extend to half the length, and the air around the heat conducting plate 39 and the S-shaped heat conducting pipe 35 is heated by the electric heating plate 36, thereby increasing the temperature of the cold air in the S-shaped heat conducting pipe 35, reducing the temperature difference between the cold air injected into the protective shell 1 and the oil pipeline tooling 9, and avoiding damage to the lubricating oil pump unit by air cooling.

[0037] See also Figure 2 and Figure 6 As shown, a vent 10 is provided on the back of the protective shell 1 . The position of the vent 10 is staggered with the position of the oil storage tank 12 , and the position of the vent 10 corresponds to the position of the insulation plug 315 .

[0038] See also Figure 1 、 Figure 2 and Figure 7 As shown, the front of the protective shell 1 is hinged with an opening and closing door, and the side of the partition 8 facing the opening and closing door is fixedly installed with a first oil pump 7 and a second oil pump 6 for pumping lubricating oil in the oil storage tank 12.

[0039] See also Figure 1 As shown, the front side of the installation shell 2 is provided with an opening for connecting an external pipeline.

[0040] Working principle: When the present invention is in use, first, when the aerial drone flies to a high altitude, the extended end of the electric push rod 34 is controlled to extend to the longest, so that the electric heating plate 36 passes through the heat conduction port 11 and contacts the outer wall of the oil storage tank 12, and then the electric heating plate 36 is turned on, and the heat is transferred to the lubricating oil in the oil storage tank 12 through the electric heating plate 36, so as to keep the viscosity of the lubricating oil low to meet the subsequent normal use. At this time, the thrust of the thrust spring causes the transmission rod 313 to move away from the end of the L-shaped rod 316 away from the insulation plug 315. Provide thrust, cooperate with the insulation plug 315 to block the air vent 10, prevent the outside cold air from entering the protective shell 1, and avoid the heat in the oil storage tank 12 from being lost too quickly; before the first oil pump 7 and the second oil pump 6 need to be turned on, the extended end of the electric push rod 34 is controlled to be retracted to the shortest, so that the electric heating plate 36 contacts the heat conducting plate 39, and then the air pump is turned on, so that the air pump injects the wet and cold air in the external environment into the filter box 33, and injects the cold air that has been filtered out of moisture into the control cylinder 32 to increase the pressure therein, and cooperate with the piston 3 7 squeezes the thrust spring. When the thrust spring contracts to its shortest point, cold air enters the S-shaped heat pipe 35. The electric heating plate 36 transfers heat to the S-shaped heat pipe 35 through the heat conducting plate 39, heating the cold air entering therein. The generated hot air flow is injected into the protective shell 1 through the insulation pipe 5 and effectively preheated toward the oil pipeline tooling 9 to prevent the viscosity of the lubricating oil in contact with it from increasing after being cooled, thereby avoiding blockage and ensuring effective transmission of the lubricating oil. At this time, the movement of the piston 37 and the transmission rod 313 will drive The L-shaped rod 316 is flipped to separate the insulation plug 315 from the air vent 10, so as to facilitate the discharge of air in the protective shell 1; after completing the preheating of the oil pipeline tooling 9, the extended end of the electric push rod 34 is controlled to extend to half its length, and the air around the heat conducting plate 39 and the S-shaped heat conducting pipe 35 is heated by the electric heating plate 36, thereby increasing the temperature of the cold air in the S-shaped heat conducting pipe 35, reducing the temperature difference between the cold air injected into the protective shell 1 and the oil pipeline tooling 9, and avoiding damage to the lubricating oil pump unit by air cooling.

[0041] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A lubricating oil pump unit for a space drone, comprising a protective shell (1), wherein a partition (8) is fixedly installed inside the protective shell (1), characterized in that: An oil storage tank (12) is fixedly mounted on the rear side of the inner wall of the protective shell (1), an oil pipeline fixture (9) is provided between the oil storage tank (12) and the partition (8), a mounting shell (2) is provided on one side of the protective shell (1), and a wind heating mechanism (3) for preheating the oil pipeline fixture (9) is provided inside the mounting shell (2); The wind heating mechanism (3) comprises an electric push rod (34) fixedly connected to the inner wall of the mounting shell (2); a regulating cylinder (32) is fixedly inserted into the mounting shell (2) on one side of the electric push rod (34); and a heat preservation unit (31) for regulating the temperature inside the protective shell (1) is provided on the side of the regulating cylinder (32) away from the electric push rod (34).

2. The lubricating oil pump unit for aerospace UAV according to claim 1, characterized in that: An electric heating plate (36) is fixedly mounted on the protruding end of the electric push rod (34); a heat conducting port (11) is provided on the side of the protective shell (1) close to the mounting shell (2); and the position of the heat conducting port (11) corresponds to the position of the electric heating plate (36).

3. The lubricating oil pump unit for aerospace UAV according to claim 1, characterized in that: A heat conducting plate (39) is fixedly mounted inside the mounting shell (2), the position of the heat conducting plate (39) corresponding to the position of the electric heating plate (36), and an S-shaped heat conducting pipe (35) is fixedly mounted on the side of the heat conducting plate (39) away from the electric heating plate (36), the input end of the S-shaped heat conducting pipe (35) being in communication with the side of the regulating cylinder (32).

4. The lubricating oil pump unit for aerospace UAV according to claim 1, characterized in that: The extended end of the electric push rod (34) movably passes through the heat conducting plate (39), and an air pump is fixedly installed on one side of the electric push rod (34). A filter box (33) for filtering moisture in the air is provided between the air pump and the regulating cylinder (32). The input end of the filter box (33) is connected to the output end of the air pump, and the output end of the filter box (33) is connected to an air outlet pipe (38). The output end of the air outlet pipe (38) is connected to a side of the regulating cylinder (32) away from the heat conducting plate (39).

5. The lubricating oil pump unit for aerospace UAV according to claim 1, characterized in that: A heat preservation plate (4) is fixedly mounted on the inner wall of the mounting shell (2) away from the regulating cylinder (32) of the electric push rod (34); the output end of the S-shaped heat conducting pipe (35) is fixedly passed through the heat preservation plate (4) and is fixedly connected to the heat preservation pipe (5); the output end of the heat preservation pipe (5) is fixedly passed through the protective shell (1), and the output end of the heat preservation pipe (5) is arranged toward the oil pipeline tooling (9).

6. The lubricating oil pump unit for aerospace UAV according to claim 1, characterized in that: The heat preservation unit (31) comprises a rotating seat (314) fixedly connected to the back of the protective shell (1); an L-shaped rod (316) is rotatably provided on the rotating seat (314); a heat preservation plug (315) is fixedly installed on one end of the L-shaped rod (316); and a connecting plate (311) is fixedly installed on the other end of the L-shaped rod (316).

7. The lubricating oil pump unit for aerospace UAV according to claim 6, characterized in that: A transmission rod (313) is movably inserted into the regulating cylinder (32), a piston (37) is fixedly mounted on one end of the transmission rod (313), a thrust spring is provided between the end of the piston (37) away from the transmission rod (313) and the inner wall of the regulating cylinder (32), and the other end of the transmission rod (313) is movably connected to the connecting plate (311).

8. The lubricating oil pump unit for aerospace UAV according to claim 1, characterized in that: A vent (10) is provided on the back of the protective shell (1), the position of the vent (10) is staggered with the position of the oil storage tank (12), and the position of the vent (10) corresponds to the position of the insulation plug (315).

Images