An automatic aviation machinery oil filling device

Abstract

The application discloses an aviation mechanical lubricating oil automatic filling device, and particularly relates to the technical field of mechanical lubrication, which comprises a grease gun body, a fixed block is arranged at the output end of the grease gun body, a first tilting device is arranged at the end of the fixed block away from the grease gun body, a second tilting device is arranged at the end of the first tilting device away from the grease gun body, and an oil outlet device is arranged at the end of the second tilting device away from the first tilting device. The aviation mechanical lubricating oil automatic filling device has the advantages that two tilting devices are cooperated with the oil outlet device, so that the device can be used to fill lubricating oil to the position needing lubrication in a narrow space, the applicability of the device is improved, and the second reset spring and the sliding block are used to slide in the storage pipe, so that the lubricating oil is prevented from flowing out of the conical pipe when the device is not used to fill lubricating oil, and the stability of the device during operation is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical lubrication, in particular to an automatic lubricating oil filling device for aviation machinery. BACKGROUND

[0002] Lubricating oil is a liquid or semi-solid lubricant used on various types of automotive machinery, aviation machinery and equipment to reduce friction, protect machinery and workpieces, and mainly plays the roles of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering. As long as it is applied between two relatively moving objects to reduce friction and wear caused by contact between the two objects, it is a lubricating oil. Lubricating oil and lubricating grease are a kind of lubricant. In simple terms, a lubricant is a substance that is placed between two relatively moving objects to reduce friction between the two objects. Lubricating oil is a technology-intensive product, a complex mixture of hydrocarbons, and its true performance is a comprehensive effect of complex physical or chemical changes. The basic performance of lubricating oil includes general physicochemical properties, special physicochemical properties and simulation bench tests.

[0003] Chinese patent document CN110748780B discloses an automatic lubricating oil filling device for large mechanical equipment, belonging to the technical field of machinery, which comprises a first support plate, the upper surface and the lower surface of the first support plate are provided with fixed plates, and the opposite surfaces of the two fixed plates are respectively fixedly connected with the two ends of a rotating shaft, and the surface of the rotating shaft is provided with a bearing. The automatic lubricating oil filling device for large mechanical equipment can realize multi-point lubrication by controlling the second electric hydraulic rod to elongate and drive the oil nozzle to contact the machinery, and then controlling the oil nozzle to spray lubricating oil. The device can be applied to lubricating oil filling of mechanical lubrication of various diameters, making the application range of the device more extensive, and ensuring the efficiency of lubricating oil addition to a certain extent. Uniform lubricating oil addition can ensure the utilization rate of lubricating oil.

[0004] The device cannot fill lubricating oil in a narrow space when in use, and the applicability of the device is poor. When the device does not need to fill lubricating oil, lubricating oil will flow out of the oil nozzle, and the stability of the device during operation is poor. SUMMARY

[0005] The main purpose of the present application is to provide an automatic lubricating oil filling device for aviation machinery, which can effectively solve the problems that the device cannot fill lubricating oil in a narrow space when in use, and lubricating oil will flow out of the oil nozzle when the device does not need to fill lubricating oil.

[0006] To achieve the above object, the technical scheme adopted by the present application is:

[0007] An aviation machinery oil automatic filling equipment, comprising a grease gun body, a fixed block is arranged at the output end of the grease gun body, a first tilting device is arranged at the end of the fixed block away from the grease gun body, a second tilting device is arranged at the end of the first tilting device away from the grease gun body, and an oil outlet device is arranged at the end of the second tilting device away from the first tilting device.

[0008] The first tilting device comprises a first mounting disc, and a first meshing gear is arranged at the outer periphery of the first mounting disc.

[0009] The second tilting device comprises a second rotating disc, a plurality of second supporting rods are arranged at the end of the second rotating disc away from the first tilting device, and a second supporting ring is arranged at the end of the second supporting rods away from the second rotating disc.

[0010] The oil outlet device comprises an oil outlet pipe, the oil outlet pipe is in communication with the inside of the second connecting pipe, a tapered pipe is arranged at the end of the oil outlet pipe away from the grease gun body, and a plurality of annular supporting blocks are arranged in the annular array of the inner cavity of the tapered pipe.

[0011] The end of the fixed block away from the grease gun body is provided with a fixed rod, the end of the fixed rod away from the grease gun body is provided with a limiting block, the outer periphery of the fixed rod is provided with a fifth meshing gear, the end of the fifth meshing gear close to the grease gun body is provided with a main push rod, and the end of the fixed block close to the grease gun body is provided with a driving motor for driving the fifth meshing gear.

[0012] Preferably, a first mounting groove is further arranged on the outer surface of the first mounting disc, a second meshing gear is arranged in the first mounting groove, the second meshing gear and the first meshing gear can be engaged with the fifth meshing gear, a plurality of first supporting rods are arranged at the end of the first mounting disc away from the grease gun body, a first supporting ring is arranged at the end of the first supporting rods away from the fixed block, a first connecting pipe is arranged at the end of the first mounting disc close to the grease gun body, and the first connecting pipe penetrates the first mounting disc to the left.

[0013] Preferably, the second meshing gear comprises a second gear body, a second mounting groove is arranged at the end of the second gear body away from the grease gun body, a first inner tooth ring is arranged in the inner cavity of the second mounting groove, a third meshing gear is arranged on the bottom surface of the inner cavity of the second mounting groove and engaged with the first inner tooth ring, and a first connecting rod is arranged at the end of the third meshing gear away from the grease gun body.

[0014] Preferably, the second rotating disc is provided with a second annular groove near one end of the body of the grease gun, the inner cavity of the second annular groove is provided with a second inner gear ring, the side of the inner cavity of the second annular groove near the second supporting rod is provided with a fourth meshing gear meshing with the second inner gear ring, the end of the fourth meshing gear away from the second supporting rod is provided with a second connecting rod, the second connecting rod penetrates through the first supporting ring, a universal joint is connected between the second connecting rod and the first connecting rod, the second supporting ring is provided with a second connecting pipe communicating with the inner part of the first connecting pipe near one end of the first tilting device, and the oil outlet pipe communicates with the inner part of the second connecting pipe.

[0015] Preferably, the plurality of annular supporting blocks are collectively provided with a second sealing block near one end of the body of the grease gun, the second supporting ring is provided with a storage pipe away from the body of the grease gun, the inner cavity bottom surface of the storage pipe is provided with a second return spring, the end of the second return spring away from the body of the grease gun is provided with a sliding block, a communication pipe is connected between the storage pipe and the oil outlet pipe, a backflow pipe is connected between the end of the storage pipe away from the body of the grease gun and the outer surface of the conical pipe, and the inner surface of the conical pipe is annularly provided with a plurality of third sealing blocks.

[0016] Preferably, the connecting position of the backflow pipe and the conical pipe is above the second sealing block.

[0017] Preferably, the plurality of third sealing blocks are elastic metal materials, when the plurality of third sealing blocks are in a natural state, the plurality of third sealing blocks collectively form a cone, and the upper part of the inner surface of the third sealing block is attached to the outer surface of the second sealing block.

[0018] Preferably, when the second return spring is in a natural state, the sliding block is located on the side of the communication pipe away from the body of the grease gun.

[0019] Preferably, the included angle between the first supporting ring and the first mounting disc and the included angle between the second rotating disc and the second supporting ring are both 45°.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The application adopts the design of two tilting devices cooperating with the oil outlet device, through the cooperation of the fifth meshing gear with the second gear body and the first meshing gear, the first tilting device and the second tilting device can rotate independently, further, the device can adjust the inclination angle of the output end of the oil outlet device, lubricating oil can be filled into the position needing lubrication in a small space, the applicability of the device is increased, at the same time, through the sliding of the second reset spring and the sliding block in the storage pipe, when the device does not flow out lubricating oil, the lubricating oil remaining in the conical pipe is sucked into the storage pipe, the lubricating oil in the conical pipe is prevented from flowing out during the process of not needing to fill lubricating oil, thereby the stability of the device during operation is increased. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of the application;

[0023] Figure 2 It is the partial structure schematic diagram of the overall device of the application;

[0024] Figure 3 It is the structure schematic diagram of the first tilting device of the application;

[0025] Figure 4 It is the structure schematic diagram of the Figure 3 enlarged view of A in the application;

[0026] Figure 5 It is the structure schematic diagram of the second tilting device of the application;

[0027] Figure 6 It is the partial structure schematic diagram of the second tilting device of the application;

[0028] Figure 7 It is the structure schematic diagram of the Figure 6 enlarged view of B in the application;

[0029] Figure 8 It is the structure schematic diagram of the cooperation of the first tilting device and the second tilting device of the application;

[0030] Figure 9 It is the structure schematic diagram of the oil outlet device when sealed of the application;

[0031] Figure 10 It is the structure schematic diagram of the oil outlet device when opened of the application.

[0032] In the diagram: 1. Grease gun body; 2. First tilting device; 3. Second tilting device; 4. Grease dispensing device; 5. Third sealing block; 11. Fixing block; 12. Fixing rod; 13. Limiting block; 14. Fifth meshing gear; 15. Main push rod; 16. Drive motor; 21. First mounting plate; 22. First meshing gear; 23. First mounting groove; 24. Second meshing gear; 241. Second gear body; 242. Second mounting groove; 243. First internal gear ring; 244. Third meshing gear; 245. First connecting rod 25. First support rod; 26. First support ring; 27. First connecting pipe; 31. Second rotating disk; 32. Second support rod; 33. Second support ring; 34. Second annular groove; 35. Second internal gear ring; 36. Fourth meshing gear; 361. Second connecting rod; 37. Universal joint; 38. Second connecting pipe; 41. Oil outlet pipe; 42. Tapered pipe; 43. Annular support block; 44. Second sealing block; 45. Storage pipe; 46. Second return spring; 47. Sliding block; 48. Connecting pipe; 49. Return pipe. Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0034] like Figures 1-10 As shown, an automatic lubricating oil filling device for aviation machinery includes a grease gun body 1. A fixed block 11 is provided at the output end of the grease gun body 1, and the connection between the output end of the grease gun body 1 and the fixed block 11 is a fixed connection. A first tilting device 2 is provided at the end of the fixed block 11 away from the grease gun body 1, and the connection between the fixed block 11 and the first tilting device 2 is a rotatable connection. A second tilting device 3 is provided at the end of the first tilting device 2 away from the grease gun body 1, and the connection between the first tilting device 2 and the second tilting device 3 is a rotatable connection. An oil outlet device 4 is provided at the end of the second tilting device 3 away from the first tilting device 2, and the connection between the second tilting device 3 and the oil outlet device 4 is a fixed connection.

[0035] The fixed block 11 is provided with a fixed rod 12 away from the end of the body 1 of the grease gun, the connection between the fixed block 11 and the fixed rod 12 is a rotating connection, the fixed rod 12 is provided with a limiting block 13 away from the end of the body 1 of the grease gun, the connection between the fixed rod 12 and the limiting block 13 is a fixed connection, the outer periphery of the fixed rod 12 is provided with a fifth meshing gear 14, the connection between the fixed rod 12 and the fifth meshing gear 14 is a sliding connection, the fifth meshing gear 14 is provided with a main push rod 15 near the end of the body 1 of the grease gun, the connection between the fifth meshing gear 14 and the main push rod 15 is a fixed connection, the end of the fixed block 11 near the body 1 of the grease gun is provided with a driving motor 16 for driving the fifth meshing gear 14, the connection between the fixed block 11 and the driving motor 16 is a fixed connection, the connection between the output end of the driving motor 16 and the fifth meshing gear 14 is a fixed connection, for driving the fifth meshing gear 14 to rotate.

[0036] Further, in order to make the fifth meshing gear 14 can be meshed with the second meshing gear 24, thereby driving the first inclined device 2 to rotate, as shown in Figures 3-4 The first inclined device 2 includes a first mounting disc 21, the connection between the first mounting disc 21 and the fixed block 11 is a rotating connection, the outer periphery of the first mounting disc 21 is provided with a first meshing gear 22, the connection between the first meshing gear 22 and the first mounting disc 21 is a fixed connection, the first meshing gear 22 drives the first mounting disc 21 to rotate through the meshing between the fifth meshing gear 14, the outer surface of the first mounting disc 21 is also provided with a first mounting groove 23, the first mounting groove 23 is used for the installation of the second meshing gear 24, the first mounting groove 23 is provided with the second meshing gear 24, and the second meshing gear 24 and the first meshing gear 22 can be meshed with the fifth meshing gear 14, the second meshing gear 24 drives the second rotating disc 31 to rotate through the meshing between the fifth meshing gear 14, the connection between the first mounting groove 23 and the second meshing gear 24 is a rotating connection, the end of the first mounting disc 21 away from the body 1 of the grease gun is provided with a plurality of first supporting rods 25, the connection between the first supporting rod 25 and the first mounting disc 21 is a fixed connection, the first supporting rod 25 is used for the installation of the first supporting ring 26.

[0037] Specifically, the plurality of first support rods 25 are provided with a first support ring 26 at one end away from the fixed block 11, the first support ring 26 is fixedly connected with the first support rod 25, the first support ring 26 is used for mounting the second tilting device 3, the first mounting disc 21 is provided with a first connecting pipe 27 at one end close to the grease gun body 1, the first connecting pipe 27 penetrates the first mounting disc 21 to the left, the first mounting disc 21 is fixedly connected with the first connecting pipe 27, the first connecting pipe 27 is rotatably connected with the output end of the grease gun body 1, and the grease squeezed out of the grease gun body 1 is transmitted to the oil outlet device 4.

[0038] Further, in order to drive the second tilting device 3 to rotate when the fifth meshing gear 14 meshes with the second meshing gear 24, as shown in Figures 3-4 Further, in order to drive the second tilting device 3 to rotate when the fifth meshing gear 14 meshes with the second meshing gear 24, as shown in

[0039] Further, in order to drive the second tilting device 3 to rotate when the fifth meshing gear 14 meshes with the second meshing gear 24, as shown in Figures 5-7As shown, the second tilting device 3 comprises a second rotating disc 31, the connection relationship between the second rotating disc 31 and the first supporting ring 26 is rotating connection, the end of the second rotating disc 31 away from the first tilting device 2 is provided with a plurality of second supporting rods 32, the connection relationship between the second supporting rods 32 and the second rotating disc 31 is fixed connection, the second supporting rods 32 are used for the installation of a second supporting ring 33, the end of the plurality of second supporting rods 32 away from the second rotating disc 31 is provided with the second supporting ring 33, the connection relationship between the plurality of second supporting rods 32 and the second rotating disc 31 is fixed connection, the end of the second rotating disc 31 close to the grease gun body 1 is provided with a second annular groove 34, the second annular groove 34 is used for the installation of a second inner tooth ring 35 and a fourth meshing gear 36, the inner cavity of the second annular groove 34 is provided with the second inner tooth ring 35, the connection relationship between the second annular groove 34 and the second inner tooth ring 35 is fixed connection, the side of the inner cavity of the second annular groove 34 close to the second supporting rod 32 is provided with the fourth meshing gear 36 meshing with the second inner tooth ring 35, the connection relationship between the fourth meshing gear 36 and the second annular groove 34 is movable connection.

[0040] Specifically, the end of the fourth meshing gear 36 away from the second supporting rod 32 is provided with a second connecting rod 361, the connection relationship between the second connecting rod 361 and the fourth meshing gear 36 is fixed connection, and the second connecting rod 361 penetrates through the first supporting ring 26, the connection relationship between the second connecting rod 361 and the first supporting ring 26 is rotating connection, the connection relationship between the second connecting rod 361 and the second supporting rod 32 is rotating connection, the universal joint 37 is connected between the second connecting rod 361 and the first connecting rod 245, the connection relationship between the universal joint 37 and the second connecting rod 361 and the first connecting rod 245 is fixed connection, the end of the second supporting ring 33 close to the first tilting device 2 is provided with the second connecting pipe 38 communicating with the inside of the first connecting pipe 27, the connection relationship between the second supporting ring 33 and the second connecting pipe 38 is fixed connection, the connection relationship between the first connecting pipe 27 and the second connecting pipe 38 is movable connection.

[0041] Specifically, the included angle between the first supporting ring 26 and the first mounting disc 21 and the included angle between the second rotating disc 31 and the second supporting ring 33 are both 45°, so that the oil outlet device 4 can be perpendicular to the fixed block 11.

[0042] The specific implementation of the embodiment is that: when the fifth meshing gear 14 is meshed with the second gear body 241 or the first meshing gear 22, the driving motor 16 drives the first meshing gear 22 to rotate through the fifth meshing gear 14, so that the first tilting device 2 rotates; when the fifth meshing gear 14 is meshed with the second meshing gear 24, the second meshing gear 24 drives the third meshing gear 244 to rotate through the first inner tooth ring 243, the third meshing gear 244 drives the fourth meshing gear 36 to rotate through the first connecting rod 245 and the universal joint 37, and the fourth meshing gear 36 drives the second rotating disc 31 to rotate through the meshing between the fourth meshing gear 36 and the second inner tooth ring 35, so as to adjust the angle of the oil outlet device 4, and further make the device adjust the inclination angle of the output end, so as to facilitate the device to add lubricating oil to the position needing lubrication in a small space. Embodiment

[0043] The embodiment further improves the oil outlet device 4 on the basis of the first embodiment, so as to prevent the lubricating oil from leaking from the output end of the oil outlet device 4 during the rotation of the first tilting device 2 and the second tilting device 3.

[0044] As shown in Figures 9-10 The oil outlet device 4 comprises an oil outlet pipe 41, the connection relationship between the oil outlet pipe 41 and the second support ring 33 is fixed connection, the oil outlet pipe 41 is in communication with the inside of the second connecting pipe 38, the connection relationship between the oil outlet pipe 41 and the second connecting pipe 38 is fixed connection, the oil outlet pipe 41 is provided with a conical pipe 42 at the end away from the grease gun body 1, the connection relationship between the conical pipe 42 and the oil outlet pipe 41 is fixed connection, a plurality of annular support blocks 43 are arranged in the inner cavity of the conical pipe 42 in an annular array, the connection relationship between the plurality of annular support blocks 43 and the conical pipe 42 is fixed connection, the plurality of annular support blocks 43 are collectively provided with a second sealing block 44 at the end close to the grease gun body 1, the connection relationship between the plurality of annular support blocks 43 and the second sealing block 44 is fixed connection, the second support ring 33 is provided with a storage pipe 45 at the end away from the grease gun body 1, the connection relationship between the second support ring 33 and the storage pipe 45 is fixed connection, the inner cavity bottom surface of the storage pipe 45 is provided with a second return spring 46, the connection relationship between the second return spring 46 and the storage pipe 45 is fixed connection, the second return spring 46 is provided with a sliding block 47 at the end away from the grease gun body 1, and the connection relationship between the sliding block 47 and the second return spring 46 is fixed connection.

[0045] Specifically, the storage tube 45 is connected with the oil outlet pipe 41 through a communication pipe 48, the communication pipe 48 is fixedly connected with the storage tube 45 and the oil outlet pipe 41, the sliding block 47 is located at the side of the communication pipe 48 away from the grease gun body 1 in the natural state of the second reset spring 46, the sliding block 47 is pushed to slide when the lubricating oil flows out, the end of the storage tube 45 away from the grease gun body 1 is connected with the outer surface of the conical pipe 42 through a backflow pipe 49, the backflow pipe 49 is fixedly connected with the storage tube 45 and the conical pipe 42, and the connection position of the backflow pipe 49 and the conical pipe 42 is above the second sealing block 44, so that the residual lubricating oil in the conical pipe 42 can flow into the storage tube 42 along the backflow pipe 49, and the inner surface of the conical pipe 42 is arranged with a plurality of third sealing blocks 5, and the third sealing blocks 5 are fixedly connected with the conical pipe 42.

[0046] The specific implementation of the embodiment is that when the lubricating oil is filled, the impact force of the lubricating oil pushes the plurality of third sealing blocks 5 to deform, the side of the plurality of third sealing blocks 5 away from the second inclined device 3 expands to the side away from each other, the lubricating oil can flow out from the gap between the plurality of third sealing blocks 5 and the second sealing block 44, and the lubricating oil flows into the storage tube 45 from the communication pipe 48 and pushes the sliding block 47 to slide to the side of the backflow pipe 49, when the lubricating oil stops being filled, the plurality of third sealing blocks 5 restore the original shape, the lubricating oil in the oil outlet pipe 41 cannot flow out, the second reset spring 46 contracts, the sliding block 47 slides to the side away from the backflow pipe 49, and further the residual lubricating oil in the conical pipe 42 is sucked into the storage tube 45, so that the lubricating oil is prevented from leaking from the output end of the oil outlet device 4 in the rotating process of the first inclined device 2 and the second inclined device 3.

[0047] It should be noted that the specific mounting mode and control mode of the driving motor 16 and the universal joint 37 in the application are conventional designs in the prior art, and the application will not be described in detail.

[0048] The basic principles and main features of the application and the advantages of the application are shown and described above. It should be understood by those skilled in the art that the application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the application, and various changes and improvements can be made without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. An automatic lubricating oil filling device for aircraft machinery, comprising a grease gun body (1), characterized in that: The output end of the grease gun body (1) is provided with a fixing block (11), and the fixing block (11) is provided with a first tilting device (2) at one end away from the grease gun body (1), and the first tilting device (2) is provided with a second tilting device (3) at one end away from the grease gun body (1), and the second tilting device (3) is provided with an oil outlet device (4) at one end away from the first tilting device (2). The first tilting device (2) includes a first mounting plate (21), and a first meshing gear (22) is provided on the outer periphery of the first mounting plate (21). The second tilting device (3) includes a second rotating disk (31), and a plurality of second support rods (32) are provided at one end of the second rotating disk (31) away from the first tilting device (2), and a second support ring (33) is provided at one end of the plurality of second support rods (32) away from the second rotating disk (31). The oil outlet device (4) includes an oil outlet pipe (41), and a tapered pipe (42) is provided at one end of the oil outlet pipe (41) away from the grease gun body (1). The inner cavity of the tapered pipe (42) is provided with a plurality of annular support blocks (43). The fixing block (11) has a fixing rod (12) at one end away from the grease gun body (1), a limiting block (13) at one end away from the grease gun body (1), a fifth meshing gear (14) on the outer periphery of the fixing rod (12), a main push rod (15) at one end of the fifth meshing gear (14) near the grease gun body (1), and a drive motor (16) for driving the fifth meshing gear (14) at one end of the fixing block (11) near the grease gun body (1).

2. The automatic lubricating oil filling device for aircraft machinery according to claim 1, characterized in that: The outer surface of the first mounting plate (21) is also provided with a first mounting groove (23), and a second meshing gear (24) is provided in the first mounting groove (23). Both the second meshing gear (24) and the first meshing gear (22) can mesh with the fifth meshing gear (14). The end of the first mounting plate (21) away from the grease gun body (1) is provided with a plurality of first support rods (25). The ends of the plurality of first support rods (25) away from the fixing block (11) are provided with a first support ring (26). The end of the first mounting plate (21) near the grease gun body (1) is provided with a first connecting tube (27), and the first connecting tube (27) passes through the first mounting plate (21) to the left.

3. The automatic lubricating oil filling device for aircraft machinery according to claim 2, characterized in that: The second meshing gear (24) includes a second gear body (241). A second mounting groove (242) is provided at one end of the second gear body (241) away from the grease gun body (1). A first internal gear ring (243) is provided in the inner cavity of the second mounting groove (242). A third meshing gear (244) that meshes with the first internal gear ring (243) is provided on the bottom surface of the inner cavity of the second mounting groove (242). A first connecting rod (245) is provided at one end of the third meshing gear (244) away from the grease gun body (1).

4. The automatic lubricating oil filling device for aircraft machinery according to claim 3, characterized in that: The second rotating disc (31) has a second annular groove (34) at one end near the grease gun body (1). The inner cavity of the second annular groove (34) is provided with a second internal toothed ring (35). The inner cavity of the second annular groove (34) near the second support rod (32) is provided with a fourth meshing gear (36) that meshes with the second internal toothed ring (35). The end of the fourth meshing gear (36) away from the second support rod (32) is provided with a second connecting rod (361), and the second connecting rod (361) passes through the first support ring (26). A universal joint (37) is connected between the second connecting rod (361) and the first connecting rod (245). The end of the second support ring (33) near the first tilting device (2) is provided with a second connecting pipe (38) that communicates with the inside of the first connecting pipe (27), and the oil outlet pipe (41) communicates with the inside of the second connecting pipe (38).

5. The automatic lubricating oil filling device for aircraft machinery according to claim 4, characterized in that: Multiple annular support blocks (43) are provided with a second sealing block (44) at one end near the grease gun body (1). The second support ring (33) is provided with a storage tube (45) at one end away from the grease gun body (1). A second return spring (46) is provided on the bottom surface of the inner cavity of the storage tube (45). A sliding block (47) is provided at one end of the second return spring (46) away from the grease gun body (1). A connecting pipe (48) is connected between the storage tube (45) and the oil outlet pipe (41). A return pipe (49) is connected between one end of the storage tube (45) away from the grease gun body (1) and the outer surface of the tapered tube (42). Multiple third sealing blocks (5) are arranged in annular array on the inner surface of the tapered tube (42).

6. The automatic lubricating oil filling device for aircraft machinery according to claim 5, characterized in that: The connection between the return pipe (49) and the tapered pipe (42) is located above the second sealing block (44).

7. The automatic lubricating oil filling device for aircraft machinery according to claim 5, characterized in that: The plurality of third sealing blocks (5) are made of elastic metal material. When the plurality of third sealing blocks (5) are in their natural state, the plurality of third sealing blocks (5) together form a cone shape, and the upper part of the inner surface of the third sealing block (5) is in contact with the outer surface of the second sealing block (44).

8. The automatic lubricating oil filling device for aircraft machinery according to claim 7, characterized in that: When the second reset spring (46) is in its natural state, the sliding block (47) is located on the side of the connecting pipe (48) away from the grease gun body (1).

9. The automatic lubricating oil filling device for aircraft machinery according to claim 7, characterized in that: The angle between the first support ring (26) and the first mounting plate (21) and the angle between the second rotating disk (31) and the second support ring (33) are both 45°.

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