Folding mechanism suitable for folding morphing wing

Abstract

The invention provides a folding mechanism suitable for folding a morphing wing, and belongs to the technical field of folding mechanisms. Comprising a first wing section, a second wing section and a folding mechanism arranged between the first wing section and the second wing section, the folding mechanism comprises a second fixing frame and a pair of first fixing frames, a sun shaft rod is arranged between the pair of first fixing frames, a plurality of planet shaft rods are arranged around the sun shaft rod, a sun wheel is fixed to the sun shaft rod, and planet wheels are fixed to the planet shaft rods. A gear ring is fixedly connected in the second fixing frame, and the gear ring is meshed with the planet gear and the sun gear; the compensation assembly is arranged in the second fixing frame; and a filtrate assembly. By arranging the compensation assembly, the planet gear, the sun gear and the gear ring are kept in contact, so that the problem that wing folding is affected due to transmission limitation caused by gear abrasion is solved; and the filtrate assembly is arranged, and filtered lubricating oil is discharged into the folding mechanism, so that the maintenance period is shortened, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of folding mechanisms, and particularly to a folding mechanism suitable for a folding variable wing. Background Art

[0002] High-speed aircraft usually adopt wings with a small aspect ratio, a thin airfoil and a sharp leading edge to reduce drag, while low-speed aircraft rely on wings with a large aspect ratio and a thick airfoil to maintain lift. The folding variable wing technology expands the flight envelope by changing the geometric parameters of the wing (such as aspect ratio, effective sweep angle); at present, folding wings mostly use mechanical actuators to achieve articulated folding between wing segments, such as the wing folding mechanism of carrier-based aircraft.

[0003] However, the folding mechanisms for variable wings in the prior art have the following deficiencies: The traditional mechanical actuator is highly coupled with the wing structure. Especially under long-term alternating loads, the gear transmission system is prone to wear and generate gaps, resulting in a decrease in transmission efficiency or even failure; in addition, the debris and impurities generated by wear mix into the lubricating oil, further accelerating the surface damage of the gears. Therefore, the present application provides a folding mechanism suitable for a folding variable wing to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a folding mechanism suitable for a folding variable wing to solve the existing problems.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A folding mechanism suitable for a folding variable wing includes a first wing segment and a second wing segment, and a folding mechanism disposed therebetween. The folding mechanism includes a second fixed frame and a pair of first fixed frames. A sun shaft is disposed between the pair of first fixed frames, and a plurality of planetary shafts are disposed around the sun shaft. A sun gear is fixed on the sun shaft, and a plurality of planetary gears are fixed on the plurality of planetary shafts. A ring gear is fixedly connected inside the second fixed frame, and the ring gear meshes with the planetary gears and the sun gear; a compensation assembly is further included, which is disposed inside the second fixed frame. The compensation assembly includes a fixed rod for guiding and compensating the planetary shafts. When the contact surface of the gears is worn, the compensation assembly adjusts the position of the planetary gears through the planetary shafts; a filtrate assembly is disposed inside the second fixed frame. The filtrate assembly includes a fixed frame for supporting the compensation assembly. An elastic capsule is disposed inside the fixed frame. When the elastic capsule is squeezed, part of the lubricating oil inside the elastic capsule is exchanged with the lubricating oil inside the second fixed frame; a driving mechanism is arranged inside the first wing segment. The above structures are all prior arts and will not be elaborated in detail here; a support ring frame is rotatably connected between the first fixed frame and the second fixed frame, and the fixed frame is fixed on the inner wall of the support ring frame.

[0007] As a preferred embodiment of the present invention, wherein: the compensation assembly further includes a fixing rod fixed on the fixing frame, the fixing rod is slidably connected to the planetary shaft rod, and a pair of springs are sleeved on the fixing rod, and a pair of adjusting caps are fixed by threads, the adjusting caps are in abutting contact with the fixing rod, and one end of the fixing rod away from the adjusting cap is in abutting contact with the planetary shaft rod.

[0008] As a preferred embodiment of the present invention, wherein: there are three of the plurality of planetary gears, and the three planetary gears are arranged equidistantly in a ring around the sun gear, there are a pair of fixing rods, and they are relatively arranged at the upper and lower ends of the fixing frame, the number of the fixing frames corresponds to the number of the planetary gears, the filtrate assembly includes a plurality of suction holes opened on the fixing rod, one end of the fixing rod away from the planetary shaft rod is inserted into the fixing frame and communicated with the elastic capsule, and a plurality of drain pipes penetrating the fixing frame are fixedly connected to the elastic capsule, and the plurality of drain pipes face the sun gear.

[0009] As a preferred embodiment of the present invention, wherein: the fixing rod is of a U-shaped structure, the opening ends of the U-shaped fixing rod are fixed to the fixing frame, the planetary shaft rod slides in the middle of the U-shaped fixing rod, and the two adjusting caps and the springs are respectively located at the opposite ends of the planetary shaft rod.

[0010] As a preferred embodiment of the present invention, wherein: the fixing frame is of a U-shaped structure, the U-shaped fixing frame includes a notch, a rotating rod is rotatably connected in the notch, fixing cylinders are rotatably connected to both ends of the rotating rod, and the two fixing cylinders are respectively located inside the fixing frame, a partial gear meshing with the planetary gear is fixedly connected to the rotating rod, and a pair of convex rods are fixedly connected to the rotating rod, and the pair of convex rods are both located inside the fixing frame; wherein, a torsion spring is arranged inside the fixing cylinder, the rotating rod is rotatably connected to the fixing cylinder through the torsion spring, and the function of the torsion spring is to drive the rotating rod to reset, which is prior art and will not be elaborated in detail; in addition, check valves are arranged in the drain pipes and the through holes, so that the drain pipes can only drain liquid and the through holes can only admit liquid, and the check valves are prior art and can be replaced by other structures as long as the required functions can be achieved.

[0011] As a preferred embodiment of the present invention, wherein: the elastic capsule includes a pair of rigid plates, a concave area is included between the pair of rigid plates, and the convex rod abuts against the rigid plate when rotating; a through hole for communicating with the fixing rod is opened on the side wall of the elastic capsule, a filter element is fixedly connected inside the elastic capsule, the filter element divides the area inside the elastic capsule, and the filter element is of an arc-shaped structure, and a cooling pipe extending outward through the support ring frame is fixedly connected to the fixing frame, and fins are integrally fixed to the outer wall of the cooling pipe.

[0012] Compared with the prior art, the present invention has at least the following beneficial effects:

[0013] In the above solution, by setting the compensation component, after the contact surface of the gear is worn, the spring in the compressed state releases a part of the distance, so that the planet gear moves along the fixed rod, so that the planet gear remains in contact with the sun gear and the ring gear, thereby preventing the transmission from being restricted due to gear wear, and further affecting the problem of wing folding.

[0014] By setting the filtrate component, when the convex rod squeezes the elastic capsule, the clean lubricating fluid in the elastic capsule is discharged into the folding mechanism through the discharge pipe. When the local gear no longer meshes with the ring gear, the torsion spring drives the rotating rod to reset, and the lubricating oil in the folding mechanism is sucked into the elastic capsule through the suction holes provided on the fixed rod, thereby performing partial exchange of the lubricating oil; and the filter element can perform isolation and filtration, and the filtered lubricating oil is discharged into the folding mechanism, thereby reducing the maintenance period and increasing the service life.

[0015] By setting the coolant in the fixed frame, the heat dissipation of the lubricating oil is improved; in addition, the cooling pipes on the fixed frame extend to the outside, thereby improving the contact between the fixed frame and the outside world, and further improving the heat dissipation capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0017] Figure 1 FIG. 18 is an overall three-dimensional structural schematic diagram of a folding mechanism suitable for a folding variable wing;

[0018] Figure 2 FIG. 22 is a three-dimensional structural schematic diagram of a folding mechanism suitable for a folding variable wing;

[0019] Figure 3 FIG. 26 is a partial structural schematic diagram of a first perspective of a folding mechanism suitable for a folding variable wing;

[0020] Figure 4 FIG. 30 is a partial structural schematic diagram of a second perspective of a folding mechanism suitable for a folding variable wing;

[0021] Figure 5 FIG. 34 is a three-dimensional structural schematic diagram of a first perspective of a compensation component of a folding mechanism suitable for a folding variable wing;

[0022] Figure 6 FIG. 38 is a three-dimensional structural schematic diagram of a second perspective of a compensation component of a folding mechanism suitable for a folding variable wing;

[0023] Figure 7Third perspective three-dimensional structural schematic diagram of a compensation component for a folding mechanism applicable to a folding variable wing

[0024] Figure 8 It is Figure 4 Enlarged structural schematic diagram at position A in

[0025] Figure 9 It is Figure 6 Enlarged structural schematic diagram at position B in

[0026] Figure 10 It is Figure 7 Enlarged structural schematic diagram at position C in

[0027] Reference numerals:

[0028] 1. First wing segment; 2. Second wing segment; 3. Folding mechanism; 4. First fixed frame; 5. Second fixed frame; 6. Support ring frame; 7. Planet shaft rod; 8. Sun shaft rod; 9. Sun gear; 10. Planet gear; 11. Ring gear; 12. Fixed rod; 13. Adjusting cap; 14. Spring; 15. Fixed frame; 16. Notch; 17. Rotating rod; 18. Fixed cylinder; 19. Local gear; 20. Convex rod; 21. Elastic capsule; 22. Rigid plate; 23. Depression area; 24. Through hole; 25. Drain pipe; 26. Cooling pipe; 27. Fins; 28. Filter element; 29. Suction hole

[0029] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments Detailed implementation manners

[0030] The following describes in detail a folding mechanism applicable to a folding variable wing provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention

[0031] It should be pointed out that in the specification, it is mentioned that "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiments may include specific features, structures or characteristics, but not necessarily every embodiment includes this specific feature, structure or characteristic. In addition, when combining embodiments to describe specific features, structures or characteristics, implementing such features, structures or characteristics in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art

[0032] Generally, terms can be understood at least in part from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or property in the singular sense, or can be used to describe a combination of features, structures, or properties in the plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather, alternatively, depending at least in part on the context, to allow for the existence of other factors that may not be explicitly described.

[0033] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but can also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0034] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptors used herein can be correspondingly interpreted similarly.

[0035] As Figures 1 to 10 shown, an embodiment of the present invention provides a folding mechanism applicable to a folding variable wing, including a first wing segment 1 and a second wing segment 2, and a folding mechanism 3 disposed therebetween. The folding mechanism 3 includes a second fixed frame 5 and a pair of first fixed frames 4. A sun shaft rod 8 is disposed between the pair of first fixed frames 4, and a plurality of planet shaft rods 7 are disposed around the sun shaft rod 8. A sun gear 9 is fixed on the sun shaft rod 8, and planet gears 10 are fixed on the plurality of planet shaft rods 7. A ring gear 11 is fixedly connected inside the second fixed frame 5, and the ring gear 11 meshes with the planet gears 10 and the sun gear 9; a driving mechanism is disposed inside the first wing segment 1. The above structures are all prior arts and will not be described in detail herein;

[0036] It further includes a compensation assembly, which is disposed inside the second fixed frame 5. The compensation assembly includes a fixed rod 12 for guiding and compensating the planet shaft rods 7. When the contact surfaces on the gears are worn, the compensation assembly adjusts the positions of the planet gears 10 through the planet shaft rods 7;

[0037] The filtrate component is arranged in the second fixed frame 5. The filtrate component includes a fixed frame 15 for supporting the compensation component. An elastic bladder 21 is arranged in the fixed frame 15. When the elastic bladder 21 is squeezed, part of the lubricating oil in the elastic bladder 21 is exchanged with the lubricating oil in the second fixed frame 5.

[0038] The compensation component further includes a fixed rod 12 fixed to the fixed frame 15. The fixed rod 12 is slidably connected to the planetary shaft rod 7. A pair of springs 14 are sleeved on the fixed rod 12, and a pair of adjusting caps 13 are fixedly connected by threads. The adjusting caps 13 are in contact with the fixed rod 12. One end of the fixed rod 12 away from the adjusting cap 13 is in contact with the planetary shaft rod 7. The fixed rod 12 is of a U-shaped structure. The open ends of the U-shaped fixed rod 12 are fixed to the fixed frame 15. The planetary shaft rod 7 slides in the middle of the U-shaped fixed rod 12. The two adjusting caps 13 and the springs 14 are respectively located at the opposite ends of the planetary shaft rod 7. Among them, the springs 14 in the compensation component are of the same specification. During assembly, by adjusting the position of one of the adjusting caps 13, one of the springs 14 is in a compressed state. When the contact surface of the gear is worn, the spring 14 in the compressed state releases a part of the distance, so that the planetary gear 10 moves along the fixed rod 12, so that the planetary gear 10 remains in contact with the sun gear 9 and the ring gear 11. By providing two springs 14 and adjusting caps 13, the purpose is to adjust the spring 14 at a suitable position according to the rotation direction of each independent gear set, so as to improve the versatility.

[0039] The number of the plurality of planetary gears 10 is three, and the three planetary gears 10 are arranged annularly and equidistantly around the sun gear 9.

[0040] There are a pair of fixed rods 12, which are oppositely arranged at the upper and lower ends of the fixed frame 15, and the number of the fixed frames 15 corresponds to the number of the planetary gears 10.

[0041] The filtrate component includes a plurality of suction holes 29 formed in the fixed rod 12. One end of the fixed rod 12 away from the planetary shaft rod 7 is inserted into the fixed frame 15 and communicated with the elastic bladder 21. A plurality of drain pipes 25 penetrating the fixed frame 15 are fixedly connected to the elastic bladder 21. The plurality of drain pipes 25 face the sun gear 9. A support ring frame 6 is rotatably connected between the first fixed frame 4 and the second fixed frame 5. The fixed frame 15 is fixed to the inner wall of the support ring frame 6. The fixed frame 15 is of a U-shaped structure. The U-shaped fixed frame 15 includes a notch 16. A rotating rod 17 is rotatably connected in the notch 16. Both ends of the rotating rod 17 are rotatably connected with fixed cylinders 18. The two fixed cylinders 18 are respectively located inside the fixed frame 15. A partial gear 19 meshing with the planet gear 10 is fixedly connected to the rotating rod 17. A pair of convex rods 20 are fixedly connected to the rotating rod 17, and the pair of convex rods 20 are both located inside the fixed frame 15. Among them, a torsion spring is arranged in the fixed cylinder 18. The rotating rod 17 is rotatably connected with the fixed cylinder 18 through the torsion spring. The function of the torsion spring is to drive the rotating rod 17 to reset. This is the prior art and will not be elaborated in detail. In addition, check valves are arranged in the drain pipes 25 and the through holes 24, so that the drain pipes 25 can only drain liquid, and the through holes 24 can only intake liquid. The check valves are the prior art and can be replaced by other structures as long as the required functions can be achieved.

[0042] During operation, due to impurities and other pollutants generated by the long-term wear of each gear and the internal lubricating oil during work, each time the folding mechanism 3 folds, the partial gear 19 arranged on the fixed frame 15 meshes with the toothed ring 11. During this process, the partial gear 19 drives the convex rod 20 to rotate through the rotating rod 17. The convex rod 20 squeezes the elastic bladder 21, so that the clean lubricating liquid in the elastic bladder 21 is discharged into the folding mechanism 3 through the drain pipe 25. When the partial gear 19 no longer meshes with the toothed ring 11, the torsion spring drives the rotating rod 17 to reset. During this process, the elastic bladder 21 returns to its original state. And during the recovery process, the lubricating oil in the folding mechanism 3 is sucked into the elastic bladder 21 through the suction holes 29 formed in the fixed rod 12, so as to carry out partial exchange of the lubricating oil.

[0043] In addition, since the drain pipes 25 and the suction holes 29 are arranged in a surrounding manner, the advantage of this arrangement is to make the exchange of the lubricating oil more uniform, thereby further improving the efficiency.

[0044] The elastic bladder 21 includes a pair of rigid plates 22. There is a recessed area 23 between the pair of rigid plates 22. When the convex rod 20 rotates, it comes into abutting contact with the rigid plates 22. A through hole 24 for communicating with the fixed rod 12 is provided on the side wall of the elastic bladder 21. A filter element 28 is fixedly connected inside the elastic bladder 21. The filter element 28 divides the area inside the elastic bladder 21, and the filter element 28 is in an arc structure. The function of the rigid plates 22 is to improve the synchronism when the lubricating oil inside the elastic bladder 21 is discharged through the plurality of drain pipes 25, and prevent the problem that the liquid discharge amount of the independent drain pipes 25 is too much or too little, which affects the uniformity. The function of the filter element 28 is to filter the lubricating oil entering the elastic bladder 21. Specifically, when the elastic bladder 21 resets, the lubricating oil inside the folding mechanism 3 enters the elastic bladder 21 through the suction holes 29, and at the same time is isolated and filtered through the filter element 28. When the elastic bladder 21 is squeezed, the filtered lubricating liquid inside the elastic bladder 21 is discharged into the folding mechanism through the drain pipes 25. By discharging the filtered lubricating oil into the folding mechanism, the maintenance cycle is reduced and the service life is increased.

[0045] In addition, the cross-section of the filter element 28 is in an arc structure. The advantage of this setting is that when too many impurities accumulate inside the elastic bladder 21, the arc-shaped filter element 28 can increase the area and reduce blockage. At the same time, during the flow of the lubrication, the impurities will accumulate in the middle part of the arc structure, and the two ends of the arc structure will not be affected and can filter normally.

[0046] A cooling pipe 26 that penetrates the support ring frame 6 and extends outward is also fixedly connected to the fixed frame 15. Fins 27 are integrally fixedly connected to the outer wall of the cooling pipe 26. Among them, the fixed frame 15 is filled with a coolant, and the coolant contacts the elastic bladder 21, which is conducive to heat exchange of the lubricating oil inside the elastic bladder 21. And the fixed frame 15 is located inside the folding structure, which also improves the heat dissipation of the lubricating oil inside it. In addition, the cooling pipe 26 on the fixed frame 15 extends into the outside, thereby increasing the contact between the fixed frame 15 and the outside world, and further improving the heat dissipation ability.

[0047] Working principle: Each time the folding mechanism 3 folds, the local gear 19 provided on the fixed frame 15 meshes with the toothed ring 11. During this process, the local gear 19 drives the convex rod 20 to rotate through the rotating rod 17. The convex rod 20 squeezes the elastic bladder 21, so that the clean lubricating liquid inside the elastic bladder 21 is discharged into the folding mechanism 3 through the drain pipes 25. When the local gear 19 no longer meshes with the toothed ring 11, the torsion spring drives the rotating rod 17 to reset. During this process, the elastic bladder 21 returns to its original state, and during the recovery process, the lubricating oil inside the folding mechanism 3 is sucked into the elastic bladder 21 through the suction holes 29 provided on the fixed rod 12, so as to perform partial exchange of the lubricating oil.

[0048] When the elastic bladder 21 resets, the lubricating oil in the folding mechanism 3 enters the elastic bladder 21 through the suction holes 29 and is isolated and filtered by the filter element 28 at the same time. When the elastic bladder 21 is squeezed, the filtered lubricating fluid in the elastic bladder 21 is discharged into the folding mechanism through the discharge pipe 25, thereby reducing the maintenance cycle.

[0049] The coolant in the fixing bracket 15 contacts the elastic bladder 21, which is conducive to heat exchange of the lubricating oil in the elastic bladder 21. Since the fixing bracket 15 is located inside the folding structure, the heat dissipation of the lubricating oil inside it is also improved; in addition, the cooling pipe 26 on the fixing bracket 15 extends into the outside, thereby improving the contact between the fixing bracket 15 and the outside world, and further improving the heat dissipation capacity.

[0050] The present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, well-known methods, processes, procedures, components and circuits are not described in detail in order to avoid unnecessary confusion to the essence of the present invention.

[0051] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A folding mechanism suitable for folding variant wings, characterized in that: The invention comprises a first wing section (1) and a second wing section (2), and a folding mechanism (3) arranged therebetween, wherein the folding mechanism (3) comprises a second fixed frame (5) and a pair of first fixed frames (4), a sun shaft (8) and a plurality of planet shafts (7) arranged around the sun shaft (8), a sun gear (9) being fixed on the sun shaft (8), and planet gears (10) being fixed on a plurality of planet shafts (7), a gear ring (11) being fixedly connected inside the second fixed frame (5), and the gear ring (11) and the planet gears (10) and the sun gear (9) being meshed with each other; It also includes a compensation component, which is arranged in the second fixed frame (5), and the compensation component includes a fixing rod (12) for guiding and compensating the planetary shaft (7). When the contact surface on the gear is worn, the compensation component adjusts the position of the planetary gear (10) through the planetary shaft (7); A filtrate assembly is arranged in the second fixed frame (5), the filtrate assembly comprises a fixed frame (15) for supporting the compensation assembly, an elastic bag (21) is arranged in the fixed frame (15), and when the elastic bag (21) is squeezed, the lubricating oil in the elastic bag (21) and the lubricating oil in the second fixed frame (5) are partially exchanged.

2. The folding mechanism for foldable variant wings according to claim 1, characterized in that: The compensation component also includes a fixing rod (12) fixed on the fixing frame (15), the fixing rod (12) and the planetary shaft (7) are slidably connected, and a pair of springs (14) are sleeved on the fixing rod (12), and a pair of adjusting caps (13) are threadedly fixed, the adjusting caps (13) and the fixing rod (12) are in contact with each other, and one end of the fixing rod (12) away from the adjusting caps (13) is in contact with the planetary shaft (7).

3. The folding mechanism for foldable variant wings according to claim 2, characterized in that: The number of the planetary gears (10) is three, and the three planetary gears (10) are arranged in an annular manner with equal distances around the sun gear (9).

4. The folding mechanism for foldable variant wings according to claim 3, characterized in that: The fixing rods (12) are a pair and are arranged relatively at the upper and lower ends of the fixing frame (15), and the number of the fixing frame (15) and the number of the planetary gears (10) correspond to each other.

5. The folding mechanism for foldable variant wings according to claim 4, characterized in that: The filtrate assembly comprises a plurality of suction holes (29) provided on the fixing rod (12); one end of the fixing rod (12) away from the planetary shaft (7) is inserted into the fixing frame (15) and is connected to the elastic bag (21); a plurality of row pipes (25) penetrating the fixing frame (15) are also fixedly connected to the elastic bag (21); the plurality of row pipes (25) are oriented toward the sun gear (9).

6. The folding mechanism for foldable variant wings according to claim 5, characterized in that: The fixing rod (12) is a U-shaped structure, the two open ends of the U-shaped fixing rod (12) are fixed to the fixing frame (15), the planetary shaft (7) is located in the middle of the U-shaped fixing rod (12) and slides, and the two adjustment caps (13) and the spring (14) are respectively located at the opposite ends of the planetary shaft (7).

7. The folding mechanism for folding variant wings according to claim 2, characterized in that: A support ring frame (6) is rotatably connected between the first fixed frame (4) and the second fixed frame (5), and the fixed frame (15) is fixed to the inner wall of the support ring frame (6).

8. The folding mechanism for foldable variant wings according to claim 7, characterized in that: The fixing frame (15) is a U-shaped structure. The fixing frame (15) of the U-shaped structure comprises a notch (16). A rotating rod (17) is rotatably connected in the notch (16). Fixed cylinders (18) are rotatably connected at both ends of the rotating rod (17). The two fixed cylinders (18) are respectively located in the fixing frame (15). A local gear (19) meshing with the planetary gear (10) is fixedly connected to the rotating rod (17). A pair of protruding rods (20) are fixedly connected to the rotating rod (17). The pair of protruding rods (20) are both located in the fixing frame (15).

9. The folding mechanism for foldable variant wings according to claim 8, characterized in that: The elastic bag (21) includes a pair of hard plates (22), a recessed area (23) is included between the pair of hard plates (22), and the convex rod (20) is in contact with the hard plates (22) when rotating; A through hole (24) for communicating with the fixing rod (12) is provided on the side wall of the elastic bag (21); a filter element (28) is fixedly connected inside the elastic bag (21); the filter element (28) divides the area inside the elastic bag (21); and the filter element (28) is an arc-shaped structure.

10. The folding mechanism for foldable variant wings according to claim 9, characterized in that: The fixing frame (15) is also fixedly connected to a cooling pipe (26) that penetrates the supporting ring frame (6) and extends outwards, and an integral fin (27) is fixedly connected to the outer wall of the cooling pipe (26).

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