Deformation wing with elastic supporting and self-locking functions and flush wing surfaces

Abstract

The invention relates to a deformable wing with an elastic supporting and self-locking function and a flush wing surface. Comprising a main wing and an extending wing, an extending mechanism is arranged in an inner cavity of the main wing, a fixing frame is arranged in an inner cavity of the extending wing, an elastic supporting mechanism is installed on the fixing frame, a first locking mechanism and a second locking mechanism are installed on the fixing frame, and one end of the first locking mechanism is connected with a pull rope; a main wing lining plate is arranged at one end of the main wing, an extending wing lining plate is arranged at one end of the extending wing, one end of the extending wing lining plate abuts against the main wing, the extending wing lining plate comprises a lining section and an outer edge section, a step is arranged at the joint of the outer edge section and the lining section, the thickness of the main wing lining plate is equal to the height of the step, and the thickness of the main wing is equal to the thickness of the extending wing. By means of the structural design of the deformation wing with the elastic supporting and self-locking functions and the flush wing surfaces, the technical problems that in the prior art, after the extending wing is pushed out, steps can appear between the extending wing and the main wing, and adverse effects can be caused to pneumatic performance of the aircraft due to the existence of the steps are solved.

Description

Technical Field

[0001] The invention relates to the technical field of aircraft components, and in particular to a deformable wing with elastic support and self-locking functions and a flush wing surface. Background Art

[0002] The wing is the main component of an aircraft during flight. Changing the wing shape during flight (such as wing sweep, changing the wingspan and camber, etc.) can effectively increase the efficiency of the wing. Among them, changing the wingspan and wing area has the most prominent effect. For example, when an aircraft is cruising, it is usually required that the wing has a high aspect ratio and a large wing area to provide more lift for the aircraft.

[0003] At present, the common method to improve the aspect ratio is to increase the wingspan length. The common method to increase the wingspan length is to add an extended wing to the main wing part, which can be done by pushing the extended wing out. However, in the prior art, after the extended wing is pushed out, a step will appear between the extended wing and the main wing. The presence of the step will have an adverse effect on the aerodynamics of the aircraft. Secondly, the deformable wing requires a stable locking structure after deformation. The current locking structure is designed separately, which increases the complexity of the overall design. In addition, the flexible wing surface of the deformable wing does not have sufficient support structure, and the flexible wing edge will deform during use, which is not conducive to flight.

[0004] Therefore, in view of the above problems, the present invention urgently needs to provide a deformable wing with elastic support and self-locking function and flush wing surface. Summary of the invention

[0005] The purpose of the present invention is to provide a deformable wing with elastic support and self-locking function and a flush wing surface. The structural design of the deformable wing with elastic support and self-locking function and a flush wing surface is used to solve the problem in the prior art that after the extended wing is pushed out, a step will appear between the extended wing and the main wing. The existence of the step will have an adverse effect on the aerodynamics of the aircraft. At the same time, the existing locking structure is complicated, and the wing edge of the extended wing is deformed. Other technical problems.

[0006] The present invention provides a deformable wing with elastic support self-locking function and flush wing surface, comprising a main wing and an extended wing, wherein the extended wing is inserted into the main wing, an extension mechanism is fixed in the inner cavity of the main wing, a fixing frame is provided in the inner cavity of the extended wing, elastic support mechanisms for supporting the upper end surface and the lower end surface of the extended wing are installed at intervals along the length of the fixing frame, the elastic support mechanism is detachably connected to the extended wing, the fixing frame is detachably connected to the extension mechanism, one end of the fixing frame extends to the outside of the extended wing, one end of the fixing frame extending to the outside of the extended wing is installed with a front support seat, and the front support seat is fixedly sleeved with a sleeve that can be laterally moved inside the main wing The movable main wing inner support frame is also equipped with a first locking mechanism and a second locking mechanism corresponding to each elastic support mechanism one by one on the fixed frame, one end of the first locking mechanism is connected to a pull rope used to pull the first locking mechanism out of the elastic support mechanism, and one end of the pull rope is fixedly connected to the main wing; wherein, when the extended wing is not extended, the first locking mechanism is used to lock the elastic support mechanism to ensure that the elastic support mechanism is in a compressed state, and after the extended wing is fully extended, the first locking mechanism is disengaged from the elastic support mechanism, and the second locking mechanism is used to lock the elastic support mechanism to prevent the elastic support mechanism from rebounding; A main wing inner lining plate is circumferentially provided on the inner edge of one end of the main wing adjacent to the extended wing, and an extended wing inner lining plate is provided on the inner wall of one end of the extended wing adjacent to the main wing. One end of the extended wing inner lining plate extends to the outside of the extended wing and abuts against the side end face of the inner support frame of the main wing. The extended wing inner lining plate includes an inner lining section located inside the extended wing and an outer edge section located outside the extended wing. A step is provided at the connection between the outer edge section and the inner lining section. After the extended wing is extended, the lower end face of the main wing inner lining plate is tightly fitted with the upper end face of the outer edge section, the side end face of the inner support frame of the main wing is fitted with the side end face of the main wing inner lining plate, the thickness of the main wing inner lining plate is equal to the height of the step, and the thickness of the main wing is equal to the thickness of the extended wing.

[0007] Preferably, the extended wing includes an upper wing panel and a lower wing panel, a leading edge skin connecting the front edges of the upper wing panel and the lower wing panel, and a trailing edge skin connecting the rear edges of the upper wing panel and the lower wing panel.

[0008] Preferably, the elastic support mechanism comprises a lower support plate and an upper support plate, the lower support plate is provided with a lower sleeve extending upward, the upper support plate is provided with an upper sleeve extending inside the lower sleeve, the inner wall of the lower sleeve is circumferentially provided with a stop protrusion, the stop protrusion is tightly fitted with the outer wall of the upper sleeve, and the outer wall of one end of the upper sleeve extending into the lower sleeve is circumferentially provided with a flange, and the outer end surface of the flange is tightly fitted with the inner wall of the lower sleeve; A first compression spring is installed in the lower sleeve, and the top of the first compression spring extends into the interior of the upper sleeve; The outer wall of the lower sleeve is provided with a first plug hole and a second plug hole communicated with the interior thereof.

[0009] Preferably, a first slot corresponding to the first plug hole is provided on the side wall of the fixing frame, and a first through hole penetrating the first plug hole is provided at the bottom of the first slot; The first locking mechanism includes a guide seat screwed with the notch of the first slot, the guide seat is provided with a guide hole connected with the inside of the first slot, an unlocking rod is inserted in the guide hole, one end of the unlocking rod extends into the first slot and penetrates into the first through hole, and the other end extends out of the guide seat, a pressure plate is circumferentially provided on the outer wall of the unlocking rod located in the first slot, and a connecting hole is provided outside the unlocking rod located outside the guide seat, a pull rope is inserted in the connecting hole, and the other end of the pull rope is fixedly connected to the main wing; A second compression spring sleeved on the unlocking rod is provided between the pressure plate and the guide seat; When the extended wing is not extended from the main wing, one end of the unlocking rod penetrates into the first insertion hole from the first through hole and is inserted into the lower sleeve, and the lower end surface of the unlocking rod located in the lower sleeve abuts against the upper end surface of the flange; After the extended wing is fully extended from the main wing, one end of the unlocking rod is pulled out from the first insertion hole into the first through hole.

[0010] Preferably, the fixing frame has second slots corresponding to the second plug hole on opposite side walls, and the second slots have second through holes penetrating the second plug hole at the bottom; The second locking mechanism includes a limit seat screwed with the notch of the second slot, a limit groove is provided at one end of the limit seat located in the second slot, a limit plate that can slide in the second slot is provided in the second slot, a locking pin is provided at one end of the limit plate, one end of the locking pin is inserted into the second through hole, a third compression spring is provided in the limit groove, and one end of the third compression spring abuts against the limit plate; When the extended wing is not extended from the main wing, one end of the lock pin abuts against the outer wall of the lower sleeve; After the extended wing is fully extended from the main wing, one end of the lock pin extends from the second insertion hole into the lower sleeve, and the upper end surface of the lock pin overlaps with the flange.

[0011] Preferably, the fixing frame comprises a long plate, and a plurality of mounting grooves matching the outer wall of the lower sleeve are arranged at intervals along the length of one side of the long plate; It also includes a single pressing block corresponding to each installation groove one by one, a docking groove matching the outer wall of the lower sleeve is provided on one side of the single pressing block, and the single pressing block is detachably connected to the long plate; The single pressing block and the long plate are provided with second slots opposite to each other; The first slot is arranged on the side wall of the long board.

[0012] Preferably, it comprises two fixed frames arranged at intervals, the two fixed frames are connected by a connecting rod, and the extending mechanism is detachably connected to the connecting rod.

[0013] Preferably, the main wing inner support frame is fixedly connected to the front support seat by screws.

[0014] Preferably, one end of the extension mechanism is fixed inside the main wing through a mounting seat; The mounting seat includes a lower module and an upper module. A fixing groove is provided at the top of the lower module. The fixing groove is connected to the side wall of the lower module on opposite sides. A fixing hole is provided at the bottom of the fixing groove. A fixing through hole corresponding to the fixing hole is provided on the upper module. The positioning pin is inserted into the fixing hole from the fixing through hole.

[0015] Preferably, rear support seats for supporting the rear end of the main wing are provided on both sides of the mounting seat; and a plurality of weight-reducing holes are provided at intervals along the length of the long plate.

[0016] The deformable wing with elastic support and self-locking function and flush wing surface provided by the present invention has the following improvements compared with the prior art: 1. The deformable wing with elastic support and self-locking function and flush wing surface provided by the present invention has an initial state that the extended wing is inside the main wing, and the first locking mechanism locks the elastic supporting mechanism. The locking of the elastic supporting mechanism can ensure the relative stillness of the upper wing surface and the lower wing surface of the extended wing, reduce the friction between the extended wing and the main wing, ensure the wing surface and ensure that the deformable wing is easier to push out; when it is necessary to unfold, the extending mechanism is started, and the extending mechanism pushes out the extended wing. During the extending process, since one end of the pull rope is fixed to the main wing and the other end of the pull rope is connected to the first locking mechanism, the pull rope pulls the first locking mechanism out of the elastic supporting mechanism, and the elastic supporting mechanism is released. After the extended wing is completely pushed out, the first locking mechanism is completely disengaged, and the elastic supporting mechanism pops out and extends in the longitudinal direction to tighten the upper end surface and the lower end surface of the extended wing. The second locking mechanism locks the elastic supporting mechanism, and the elastic supporting mechanism is locked in the longitudinal direction without rebounding, and then the extended wing inner lining plate, the inner lining section, the outer edge section and the main wing inner supporting frame are mutually limited. After the extended wing is fully extended, there is no step at the connection between the extended wing and the main wing, and the outer end surface of the extended wing is flush with the outer end surface of the main wing, which solves the technical problem that the existing deformable wing with elastic support self-locking function and flush wing surface has an uneven and discontinuous starting shape of the wing surface after deformation; the extended wing and the main wing are locked to form a rigid body together, and the two do not have the conditions for axial or radial relative movement.

[0017] 2. The deformable wing with elastic support and self-locking function and flush wing surface provided by the present invention is designed with a first locking mechanism and a second locking mechanism. The first locking mechanism ensures that the upper wing surface and the lower wing surface are relatively still before the extended wing is extended, and the friction between the upper wing and the main wing is fully reduced, thereby protecting the wing surface and ensuring that the extended wing is easier to push out. The second locking mechanism ensures that after the extended wing is extended, the upper wing surface and the lower wing surface will not recover, thereby ensuring the stability of the extended wing.

[0018] 3. The deformable wing provided by the present invention has an elastic support self-locking function and a flush wing surface. One end of the extended wing is combined with an extended wing inner lining plate and a main wing inner support frame to ensure the accuracy of guidance.

[0019] 4. The deformable wing with elastic support and self-locking function and flush wing surface provided by the present invention can obviously meet the actuation requirements, has high integration, small size, light weight, simple structure, high working stability and high reliability. The invention has the characteristics of extremely low parts manufacturing cost, excellent assembly processability and extremely low comprehensive cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of the deformable wing with elastic support and self-locking function and flush wing surface according to the present invention (the extended wing is not shown); Figure 2 It is a schematic diagram of the structure of the deformable wing with elastic support and self-locking function and flush wing surface according to the present invention (the extended wing part is shown); Figure 3 It is a schematic diagram of the structure of the deformable wing with elastic support and self-locking function and flush wing surface according to the present invention (the extended wing is fully displayed); Figure 4 A schematic diagram of the structure of a deformable wing with elastic support and self-locking function and flush wing surface in the present invention (partial internal diagram); Figure 5 A schematic diagram of the structure of a deformable wing with elastic support and self-locking function and flush wing surface in the present invention (partial internal diagram); Figure 6 It is an assembly diagram of the fixing frame, the elastic supporting mechanism, the first locking mechanism and the second locking mechanism of the present invention (partial top view, the extended wings are not released); Figure 7 for Figure 6 BB cross-sectional view; Figure 8 for Figure 6 AA section view; Fig. 9 It is an assembly diagram of the fixing frame, the elastic supporting mechanism, the first locking mechanism and the second locking mechanism described in the present invention (partial top view, with the wings extended and released); Fig.10 for Figure 7 CC section view; Fig.11 for Figure 7 DD cross-sectional view; Fig.12 It is a schematic diagram of the structure of the deformable wing with elastic support and self-locking function and flush wing surface in the present invention (cross-sectional view, the extended wing is not extended); Fig.13 for Fig.12 Enlarged view of point E in the middle; Fig.14 for Fig.12 The enlarged view of F in the middle; Fig.15 A schematic diagram of the structure of a deformable wing with elastic support and self-locking function and flush wing surface in the present invention (a cross-sectional view, with the extended wing fully extended); Fig.16 for Fig.15 Enlarged view of G in the middle; Fig.17 It is a structural schematic diagram of the fixing frame of the present invention (partial diagram); Fig.18 It is a structural schematic diagram of the fixing frame of the present invention (partial diagram); Fig.19 This is a schematic diagram of the structure of the deformable wing with elastic support and self-locking function and flush wing surface according to the present invention (excluding the main wing and the extended wing) Fig. 20 It is a structural schematic diagram of the mounting base of the present invention.

[0022] Description of reference numerals: 1. Main wing; 2. Extended wing; 21. Upper wing panel; 22. Lower wing panel; 23. Leading edge skin; 24. Trailing edge panel skin; 3. Extending mechanism; 4. Fixing frame; 41. First slot; 411. First perforation; 42. Second slot; 43. Long board; 44. Single pressure block; 421. Second perforation; 431. Weight reduction hole; 5. Elastic support mechanism; 51. Lower support plate; 52. Upper support plate; 53. Lower sleeve; 54. Upper sleeve; 55. Flanging; 56. First compression spring; 57. First plug hole; 58. Second plug hole; 512. Stop protrusion; 6. First locking mechanism; 61. Guide seat; 611. Guide hole; 62. Unlocking rod; 621. Pressure plate; 63. Second compression spring; 7. Second locking mechanism; 71. Limit seat; 72. Limit plate; 73. Lock pin; 74. Third compression spring; 711. Limit groove; 8. Main wing lining plate; 9. Extended wing lining plate; 91. Lining section; 92. Outer edge section; 10. Main wing inner support frame; 15. Connecting rod; 16. Front support seat; 17. Mounting seat; 171. Lower module; 172. Upper module; 173. Positioning pin; 1711. Fixing groove; 1721. Fixing through hole; 18. Rear support seat. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig.12 , Fig.13 , Fig.14 , Fig.15 and Fig.16As shown, the present embodiment provides a deformable wing with elastic support and self-locking function and flush wing surface, comprising a main wing 1 and an extended wing 2, the extended wing 2 is inserted into the main wing 1, an extension mechanism 3 is fixed in the inner cavity of the main wing 1, a fixing frame 4 is provided in the inner cavity of the extended wing 2, elastic support mechanisms 5 for supporting the upper end surface and the lower end surface of the extended wing 2 are installed at intervals along the length of the fixing frame 4, the elastic support mechanism 5 is detachably connected to the extended wing 2, the fixing frame 4 is detachably connected to the extended mechanism 3, one end of the fixing frame 4 extends to the outside of the extended wing 2, and one end of the fixing frame 4 extending to the outside of the extended wing 2 is installed with a front support seat 16, the front support seat 16 is fixedly sleeved with a main wing inner support frame 10 that can move laterally inside the main wing 1, and the fixing frame 4 is also installed with a first locking mechanism 6 and a second locking mechanism 7 corresponding to each elastic support mechanism 5, one end of the first locking mechanism 6 is connected to a pull rope for pulling the first locking mechanism 6 out of the elastic support mechanism 5, and one end of the pull rope is fixed to the main wing 1; wherein, when the extended wing 2 is not extended, The first locking mechanism 6 is used to lock the elastic support mechanism 5 to ensure that the elastic support mechanism 5 is in a compressed state. After the extended wing 2 is fully extended, the first locking mechanism 6 is disengaged from the elastic support mechanism 5. The second locking mechanism 7 is used to lock the elastic support mechanism 5 to prevent the elastic support mechanism 5 from rebounding. A main wing inner lining plate 8 is circumferentially provided on the inner edge of one end of the main wing 1 adjacent to the extended wing 2, and an extended wing inner lining plate 9 is provided on the inner wall of one end of the extended wing 2 adjacent to the main wing 1. One end of the extended wing inner lining plate 9 extends to the extended wing 2. The outer side of the wing 2 abuts against the side end face of the inner support frame 10 of the main wing, and the inner lining plate 9 of the extended wing includes an inner lining section 91 located inside the extended wing 2 and an outer edge section 92 located outside the extended wing 2. A step is provided at the connection between the outer edge section 92 and the inner lining section 91. After the extended wing 2 is extended, the lower end face of the inner lining plate 8 of the main wing fits tightly with the upper end face of the outer edge section 92, and the side end face of the inner support frame 10 of the main wing fits with the side end face of the inner lining plate 8 of the main wing. The thickness of the inner lining plate 8 of the main wing is equal to the height of the step, and the thickness of the main wing 1 is equal to the thickness of the extended wing 2.

[0027] The deformable wing with elastic support and self-locking function and flush wing surface provided by the present invention has an initial state that the extended wing 2 is inside the main wing 1, and the first locking mechanism 6 locks the elastic supporting mechanism 5. The elastic supporting mechanism 5 is detachably connected to the extended wing 2. The locking of the elastic supporting mechanism 5 can ensure the relative stillness of the upper and lower wing surfaces of the extended wing, reduce the friction between the extended wing and the main wing, ensure the wing surface and ensure that the deformable wing is easier to push out; when it is necessary to unfold, the extending mechanism 3 is started, and the extending mechanism 3 pushes out the extended wing 2. During the extending process, since one end of the pull rope is fixedly connected to the main wing 1 and the other end of the pull rope is connected to the first locking mechanism, the pull rope pulls the first locking mechanism 6 out of the elastic supporting mechanism 5, and the elastic supporting mechanism 5 is released. After the extended wing 2 is completely pushed out, the first locking mechanism 6 is completely disengaged, and the elastic supporting mechanism 5 pops out and extends longitudinally to support the upper and lower end surfaces of the extended wing 2. Since the extended wing 2 is made of flexible material, Under the action of the elastic support mechanism 5, the upper and lower end surfaces of the extended wing 2 are flush with the upper and lower end surfaces of the main wing, and the second locking mechanism 7 locks the elastic support mechanism 5. The elastic support mechanism 5 is locked in the longitudinal direction and does not rebound. Then, the extended wing inner lining plate 9, the inner lining section 91, the outer edge section 92 and the main wing inner support frame 10 limit each other. After the extended wing 2 is fully extended, there is no step at the connection between the extended wing 2 and the main wing, and the outer end surface of the extended wing 2 is flush with the outer end surface of the main wing 1, which solves the technical problem that the existing deformable wing with elastic support self-locking function and flush wing surface has an uneven and discontinuous starting shape of the wing surface after deformation; the extended wing and the main wing are locked together to form a rigid body, and the two do not have the conditions for axial or radial relative movement.

[0028] The main wing inner lining plate 8 of the present invention can be connected to the main wing 1 by gluing, or can be prepared by a mold and integrally formed. According to needs, one of the above methods can be selected for preparation.

[0029] The extended wing lining plate of the present invention is designed as a split body, comprising an upper extended wing lining plate and a lower extended wing lining plate, wherein the upper extended wing lining plate is connected to the upper wing plate of the extended wing, and the lower extended wing lining plate is connected to the lower wing plate of the extended wing.

[0030] The extending mechanism of the present invention is an electric push rod.

[0031] like Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the extended wing 2 of this embodiment includes an upper wing panel 21 and a lower wing panel 22, a leading edge skin 23 connecting the front edges of the upper wing panel 21 and the lower wing panel 22, and a trailing edge panel skin 24 connecting the rear edges of the upper wing panel 21 and the lower wing panel 22; the outer end of the front flange conformal strip 11 is fixedly connected to the leading edge skin 23; the outer end of the rear flange conformal strip 12 is fixedly connected to the trailing edge panel skin 24, and the front flange conformal strip 11 and the rear flange conformal strip 12 are movably connected to the upper wing panel 21 and the lower wing panel 22.

[0032] The upper wing panel 21, the lower wing panel 22, the leading edge skin 23, the trailing edge panel skin 24, the leading edge conformal strip 11 and the trailing edge conformal strip 12 of the present invention are designed separately to facilitate assembly; after assembly, during the extension process of the extended wing, the upper wing panel 21 and the lower wing panel 22 move upward and downward in the longitudinal direction respectively, driving the leading edge skin 23 and the trailing edge panel skin 24 to move toward the center in the transverse direction.

[0033] The front flange connection between the upper wing panel 21 and the lower wing template 22 of the present invention is stepped, the leading edge skin 23 is curved, and the inner sides of both ends of the leading edge skin 23 are provided with front end connecting surfaces that match the connection between the upper wing panel 21 and the lower wing template 22 and are stepped. The leading edge skin 23 is glued and fixed to the upper wing panel 21 and the lower wing template 22.

[0034] The rear edge connection between the upper wing panel 21 and the lower wing template 22 of the present invention is stepped, the trailing edge panel skin 24 is curved, and the inner sides of both ends of the trailing edge panel skin 24 are provided with stepped rear end connecting surfaces that match the connection between the upper wing panel 21 and the lower wing template 22. The trailing edge panel skin 24 is glued and fixed to the upper wing panel 21 and the lower wing template 22.

[0035] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11As shown, the elastic support mechanism 5 of this embodiment includes a lower support plate 51 and an upper support plate 52. The lower support plate 51 is provided with a lower sleeve 53 extending upward, and the upper support plate 52 is provided with an upper sleeve 54 extending inside the lower sleeve 53. The inner wall of the lower sleeve 53 is circumferentially provided with a stop protrusion 512, and the stop protrusion 512 is tightly fitted with the outer wall of the upper sleeve 54. The outer wall of one end of the upper sleeve 54 extending into the lower sleeve 53 is circumferentially provided with a flange 55, and the outer end surface of the flange 55 is tightly fitted with the inner wall of the lower sleeve 53; a first compression spring 5 is installed in the lower sleeve 53. 6. The top of the first compression spring 56 extends into the interior of the upper sleeve 54; the outer wall of the lower sleeve 53 is provided with a first plug hole 57 and a second plug hole 58 connected with the interior thereof; the upper support plate 52 can support the upper wing surface of the extended wing 2, and the lower support plate 51 can support the lower wing surface of the extended wing 2. A pile of compression springs is arranged between the upper support plate 51 and the lower support plate 52, which can be relatively close to each other under the action of external force, and can be relatively far away from each other without the action of external force, thereby realizing the longitudinal movement of the upper end surface and the lower end surface of the extended wing, with a simple structural design and good stability.

[0036] like Figure 7 and Fig.11As shown, in this embodiment, a first slot 41 corresponding to the first insertion hole 57 is provided on the side wall of the fixing frame 4, and a first through hole 411 penetrating the first insertion hole 57 is provided at the bottom of the first slot 41; the first locking mechanism 6 includes a guide seat 61 screwed with the notch of the first slot 41, and a guide hole 611 communicating with the inside of the first slot 41 is provided on the guide seat 61, and an unlocking rod 62 is inserted in the guide hole 611, and one end of the unlocking rod 62 extends into the first slot 41 and penetrates into the first through hole 411, and the other end extends out of the guide seat 61 and is located in the first slot A pressure plate 621 is provided on the outer wall of the unlocking rod 62 in the inner part of the main wing 41. A connecting hole is provided on the outer part of the unlocking rod 62 outside the guide seat 61. A pull rope is passed through the connecting hole. The other end of the pull rope is fixedly connected to the main wing 1. A second compression spring 63 sleeved on the unlocking rod 62 is provided between the pressure plate 621 and the guide seat 61. When the extended wing 2 is not extended from the main wing 1, one end of the unlocking rod 62 penetrates from the first through hole 411 into the first plug hole 57 and is inserted into the lower sleeve 53. The lower end surface of the unlocking rod 62 located in the lower sleeve 53 abuts against the upper end surface of the flange 55. The extended wing 2 is extended from the main wing 1. After fully extended, one end of the unlocking rod 62 is pulled out from the first insertion hole 57 into the first through hole 411; through the above structural design, it can be ensured that the elastic support mechanism 5 is locked before the extended wing is extended, and the first compression spring is in a compressed state, reducing the friction between the upper wing plate 21 and the lower wing plate 22 and the main wing 1, protecting the wing surface while ensuring the extension of the extended wing 2. During assembly, the lower support plate 51 and the upper support plate 52 are compressed so that the first insertion hole 57 and the first through hole 411 are connected, and one end of the unlocking rod 62 is extended from the first through hole 411 into the first insertion hole 57 Inside, the movement of the flange 55 in the longitudinal direction is restricted, and in the transverse direction, the pressure plate 621, the second compression spring 63 and the guide seat 61 work together to limit the unlocking rod 62; after the extending wing is extended, the pull rope drags the unlocking rod 62 to move outward, and one end of the unlocking rod 62 escapes from the first plug hole 57. Under the action of the first compression spring 56, the lower support plate 51 and the upper support plate 52 move away from each other, the first plug hole 57 and the first through hole 411 are no longer connected, and one end of the unlocking rod 62 abuts against the outer wall of the lower sleeve 53, thereby realizing the release of the lower support plate 51 and the upper support plate 52.

[0037] The first slot 41 of the present invention is arranged at an angle to the side end surface of the fixing frame 4, so as to facilitate the pulling of the pull rope.

[0038] like Figure 8 , Fig.10 , Fig.17 , Fig.18As shown, the second slots 42 corresponding to the second insertion holes 58 are provided on the opposite side walls of the fixing frame 4 of this embodiment, and the second through-holes 421 penetrating the second insertion holes 58 are provided at the bottom of the second slots 42; the second locking mechanism 7 includes a limiting seat 71 screwed to the notch of the second slots 42, and a limiting groove 711 is provided at one end of the limiting seat 71 located in the second slots 42, and a limiting plate 72 that can slide in the second slots 42 is provided in the second slots 42, and a locking pin 73 is provided at one end of the limiting plate 72, and one end of the locking pin 73 penetrates into the second through-hole 421, and a limiting groove 711 is provided in the limiting groove 711. There is a third compression spring 74, one end of the third compression spring 74 abuts against the limit plate 72; when the extended wing 2 has not extended from the main wing 1, one end of the locking pin 73 abuts against the outer wall of the lower sleeve 53; after the extended wing 2 is fully extended from the main wing 1, one end of the locking pin 73 extends from the second insertion hole 58 into the lower sleeve 53, and the upper end surface of the locking pin 73 overlaps the flange 55; through the above-mentioned structural design, after the extended wing 2 is fully extended, the elastic support mechanism 5 can be locked and fixed, that is, the lower support plate 51 and the upper support plate 52 will not rebound or recover, thereby ensuring the stability of the wing surface after deformation. That is, after the extending wing 2 is fully extended, the second plug hole 58 is connected with the second through hole 421, and the limit plate 72 moves toward the second plug hole 58 under the action of the third compression spring 74. The locking pin 73 successively penetrates into the lower sleeve 53 from the second through hole 421 and the second plug hole 58. The upper end surface of the locking pin 73 overlaps with the flange 55 to limit the longitudinal movement of the upper sleeve 54. The limit plate 72, the third compression spring 74 and the limit seat 71 cooperate to limit the lateral movement of the locking pin 73, thereby realizing the locking and fixing of the elastic support mechanism 5.

[0039] like Figure 4 , Figure 5 As shown, the fixing frame 4 of this embodiment includes a long plate 43, and a plurality of mounting grooves matching the outer wall of the lower sleeve 53 are arranged at intervals along the length on one side of the long plate 43; it also includes a single pressure block 44 corresponding to each mounting groove one by one, and a docking groove matching the outer wall of the lower sleeve 53 is provided on one side of the single pressure block 44, and the single pressure block 44 is detachably connected to the long plate 43; a second slot 42 is provided on the single pressure block 44 and the long plate 43 relative to each other; the first slot 41 is provided on the side wall of the long plate 43; the design of the above structure facilitates the installation and fixation of the elastic support mechanism 5.

[0040] In some specific embodiments, three elastic support mechanisms 5 are installed at intervals on the long plate 43 , and can also be arranged at intervals according to the length of the extended wing 2 .

[0041] like Figure 4 , Figure 5 As shown, this embodiment includes two fixed frames 4 arranged at intervals, the two fixed frames 4 are connected by a connecting rod 15, and the extending mechanism 3 is detachably connected to the connecting rod 15; through the above-mentioned structural design and symmetrical arrangement, a balanced supporting force for the wing surface of the extended wing can be ensured, and the flatness of the wing surface of the extended wing can be ensured.

[0042] like Figure 4 As shown, in this embodiment, a front support seat 16 for supporting one end of the main wing 1 is installed at one end of the fixing frame 4 adjacent to the main wing 1. The two front support seats 16 are fixed together with the fixing frame 4 through double pressure blocks. The double pressure blocks include a pressure plate, and two docking grooves are provided at intervals on one side of the pressure plate to facilitate installation and disassembly.

[0043] like Fig. 20 As shown, one end of the extension mechanism 3 of the present embodiment is fixed in the main wing 1 through the mounting seat 17; the mounting seat 17 includes a lower module 171 and an upper module 172, a fixing groove 1711 is provided at the top of the lower module 171, the fixing groove 1711 is connected to the side wall of the lower module 171 on opposite sides, a fixing hole is provided at the bottom of the fixing groove 1711, and a fixing through hole 1721 corresponding to the fixing hole is provided on the upper module 172, and a positioning pin 173 is inserted from the fixing through hole 1721 and screwed to the fixing hole; through the design of the above structure, the connection between the extension mechanism 3 and the mounting seat 17 and the connection between the mounting seat 17 and the main wing 1 are facilitated.

[0044] like Fig.19 As shown, rear support seats 18 for supporting the rear end of the main wing 1 are provided on both sides of the mounting seat 17 of this embodiment; screw holes are provided on the upper end surface and the lower end of the rear support seat 18, and the rear support seat 18 is fixedly connected to the main wing by bolts to support the rear end of the main wing and ensure the flatness of the main wing surface.

[0045] The main wing 1 of the present invention is made of composite materials, and the upper wing panel, lower wing panel, front flange shape-retaining strip 11 and rear flange shape-retaining strip 12 of the extended wing 2 are also made of composite materials.

[0046] The long plate 43 of the present invention is provided with a plurality of weight-reducing holes 431 at intervals along the length, so as not to excessively increase the weight of the deformable wing having elastic support and self-locking functions and a flush wing surface.

[0047] The connecting rod 15 of the present invention is provided with a drawstring through hole 151 through which the drawstring passes. The drawstring can pass through the drawstring through hole 151 and be fixedly connected to the rear support seat 18 in the main wing 1 .

[0048] The mounting plate of the present invention comprises an upper plate and a lower plate, and the upper plate and the lower plate are provided with connecting rod connecting holes for connecting with the connecting rod 15 and extending mechanism connecting holes for connecting with the extending mechanism 3, so as to facilitate the connection between the extending mechanism 3 and the connecting rod 15.

[0049] The assembly process of the deformable wing with elastic support and self-locking function and flush wing surface in this embodiment is as follows: 1) Assemble the fixing frame 4, the elastic support mechanism 5, the first locking mechanism 6, the second locking mechanism 7, the extending mechanism 3, the mounting seat 17, the pull rope and the front support seat 16 as shown in FIG. Fig.19During assembly, one end of the extending mechanism 3 is fixedly connected to the connecting rod 15 through the mounting plate, the first locking mechanism 6 locks the elastic supporting mechanism 5, and the drawstring passes through the drawstring through hole 151 of the connecting rod 15; 2) Assemble the extended wing 2, assemble the upper wing panel of the extended wing 2 and the upper extended wing inner lining panel into an upper wing panel assembly, assemble the lower wing panel of the extended wing and the lower extended wing inner lining panel into a lower wing panel assembly, and then assemble the upper wing panel assembly, the lower wing panel assembly, the front flange skin, and the rear flange skin; assemble the fixing frame 4 assembled in step 1 with the extended wing 2, and the elastic support mechanism 5 is detachably connected to the extended wing by bolts; 3) Install the inner lining plate of the main wing 1 inside the main wing, assemble the extended wing assembled in step 2 with the main wing, put the front support seat 16 on the main wing inner support frame 10, and fix it with bolts; connect the extension mechanism 3 with the main wing 1 through the mounting seat 17 and bolts; 4) Fix the rear support seat 18 inside the main wing 1 by bolts, and fix the pull ropes on both sides to the corresponding rear support seats 18 respectively. The two rear support seats 18 are arranged on both sides of the mounting seat 17.

[0050] Deformed wing extension process: 1) The extending mechanism 3 is started, and the extending mechanism 3 pushes the fixing frame 4 to extend toward the outer end of the main wing 1.

[0051] 2) When the fixing frame 4 moves outward, it drives the elastic supporting mechanism 5 to move outward, and then drives the extending wing 2 to extend outward. A moment before it is fully extended, the pull rope pulls the first locking mechanism 6 to release the elastic supporting mechanism 5. Under the action of the first spring, the upper wing plate and the lower wing plate of the extending wing 2 move upward and downward respectively. When the extending wing is fully extended, the second locking mechanism 7 will lock the extending wing to ensure that the upper wing plate and the lower wing plate of the extending wing are positioned. Under the joint action of the main wing inner lining plate 8, the extending wing inner lining plate 9, and the main wing inner support frame 10, the movement of the extending wing 2 in the length direction is restricted. Considering that the airfoil is a non-circular cross-section, its axial rotation is restricted.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A deformable wing with elastic support and self-locking function and flush wing surface, characterized in that: The invention comprises a main wing (1) and an extended wing (2), wherein the extended wing (2) is inserted into the main wing (1), an extension mechanism (3) is fixed in the inner cavity of the main wing (1), a fixing frame (4) is provided in the inner cavity of the extended wing (2), elastic support mechanisms (5) for supporting the upper end surface and the lower end surface of the extended wing (2) are installed at intervals along the length of the upper edge of the fixing frame (4), the elastic support mechanism (5) is detachably connected to the extended wing (2), the fixing frame (4) is detachably connected to the extension mechanism (3), one end of the fixing frame (4) extends outside the extended wing (2), one end of the fixing frame (4) extending outside the extended wing (2) is installed with a front support seat (16), and the front support seat (16) is fixedly sleeved with a main wing inner support frame that can move laterally inside the main wing (1). (10), a first locking mechanism (6) and a second locking mechanism (7) corresponding to each elastic support mechanism (5) are also installed on the fixing frame (4), one end of the first locking mechanism (6) is connected to a pull rope used to pull the first locking mechanism (6) out of the elastic support mechanism (5), and one end of the pull rope is fixedly connected to the main wing (1); wherein, when the extending wing (2) is not extended, the first locking mechanism (6) is used to lock the elastic support mechanism (5) to ensure that the elastic support mechanism (5) is in a compressed state; after the extending wing (2) is fully extended, the first locking mechanism (6) is separated from the elastic support mechanism (5), and the second locking mechanism (7) is used to lock the elastic support mechanism (5) to prevent the elastic support mechanism (5) from rebounding; A main wing inner lining plate (8) is provided on the inner edge of one end of the main wing (1) adjacent to the extended wing (2), and an extended wing inner lining plate (9) is provided on the inner wall of one end of the extended wing (2) adjacent to the main wing (1). One end of the extended wing inner lining plate (9) extends to the outside of the extended wing (2) and abuts against the side end surface of the main wing inner support frame (10). The extended wing inner lining plate (9) comprises an inner lining section (91) located inside the extended wing (2) and an outer edge section (92) located outside the extended wing (2). A step is provided at the connection between the outer edge section (92) and the inner lining section (91). After the extended wing (2) is extended, the lower end surface of the main wing inner lining plate (8) is tightly fitted with the upper end surface of the outer edge section (92), the side end surface of the main wing inner support frame (10) is fitted with the side end surface of the main wing inner lining plate (8), the thickness of the main wing inner lining plate (8) is equal to the height of the step, and the thickness of the main wing (1) is equal to the thickness of the extended wing (2).

2. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The extended wing (2) comprises an upper wing panel (21) and a lower wing panel (22), a leading edge skin (23) connecting the front edges of the upper wing panel (21) and the lower wing panel (22), and a trailing edge skin (24) connecting the rear edges of the upper wing panel (21) and the lower wing panel (22).

3. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The elastic support mechanism (5) comprises a lower support plate (51) and an upper support plate (52); the lower support plate (51) is provided with a lower sleeve (53) extending upward; the upper support plate (52) is provided with an upper sleeve (54) extending inside the lower sleeve (53); a stop protrusion (512) is circumferentially provided on the inner wall of the lower sleeve (53); the stop protrusion (512) is tightly fitted with the outer wall of the upper sleeve (54); a flange (55) is circumferentially provided on the outer wall of one end of the upper sleeve (54) extending into the lower sleeve (53); the outer end surface of the flange (55) is tightly fitted with the inner wall of the lower sleeve (53); A first compression spring (56) is installed in the lower sleeve (53), and the top of the first compression spring (56) extends into the interior of the upper sleeve (54); the outer wall of the lower sleeve (53) is provided with a first plug hole (57) and a second plug hole (58) which are communicated with the interior thereof.

4. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: A first slot (41) corresponding to the first plug hole (57) is provided on the side wall of the fixing frame (4), and a first through hole (411) penetrating the first plug hole (57) is provided at the bottom of the first slot (41); The first locking mechanism (6) comprises a guide seat (61) screwed to the notch of the first slot (41), the guide seat (61) is provided with a guide hole (611) connected to the inside of the first slot (41), an unlocking rod (62) is inserted into the guide hole (611), one end of the unlocking rod (62) extends into the first slot (41) and penetrates into the first through hole (411), and the other end extends out of the guide seat (61), a pressure plate (621) is circumferentially provided on the outer wall of the unlocking rod (62) located in the first slot (41), and a connecting hole is provided on the outside of the unlocking rod (62) located outside the guide seat (61), a pull rope is inserted into the connecting hole, and the other end of the pull rope is fixedly connected to the main wing (1); A second compression spring (63) sleeved on the unlocking rod (62) is provided between the pressure plate (621) and the guide seat (61); When the extended wing (2) has not extended from the main wing (1), one end of the unlocking rod (62) penetrates from the first through hole (411) into the first insertion hole (57) and is inserted into the lower sleeve (53), and the lower end surface of the unlocking rod (62) located in the lower sleeve (53) abuts against the upper end surface of the flange (55); After the extended wing (2) is fully extended from the main wing (1), one end of the unlocking rod (62) is pulled out from the first insertion hole (57) into the first through hole (411).

5. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The fixing frame (4) has two opposite side walls provided with second slots (42) corresponding to the second insertion hole (58), and the bottom of the second slot (42) is provided with a second through hole (421) penetrating the second insertion hole (58); The second locking mechanism (7) comprises a limit seat (71) threadedly connected to a notch of the second slot (42); a limit groove (711) is provided at one end of the limit seat (71) located in the second slot (42); a limit plate (72) slidable in the second slot (42) is provided in the second slot (42); a locking pin (73) is provided at one end of the limit plate (72); one end of the locking pin (73) is inserted into the second through hole (421); a third compression spring (74) is provided in the limit groove (711); one end of the third compression spring (74) abuts against the limit plate (72); When the extended wing (2) has not extended from the main wing (1), one end of the locking pin (73) abuts against the outer wall of the lower sleeve (53); After the extended wing (2) is fully extended from the main wing (1), one end of the lock pin (73) extends from the second insertion hole (58) into the lower sleeve (53), and the upper end surface of the lock pin (73) overlaps the flange (55).

6. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The fixing frame (4) comprises a long plate (43), and a plurality of mounting grooves matching the outer wall of the lower sleeve (53) are arranged at intervals along the length of one side of the long plate (43); It also includes a single pressing block (44) corresponding to each installation groove one by one, a docking groove matching the outer wall of the lower sleeve (53) is provided on one side of the single pressing block (44), and the single pressing block (44) is detachably connected to the long plate (43); The single pressing block (44) and the long plate (43) are provided with second slots (42) opposite to each other; The first slot (41) is arranged on the side wall of the long plate (43).

7. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: It comprises two fixed frames (4) arranged at an interval, the two fixed frames (4) are connected via a connecting rod (15), and the extending mechanism (3) is detachably connected to the connecting rod (15).

8. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: The main wing inner support frame (10) is fixedly connected to the front support seat (16) by means of screws.

9. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 1, characterized in that: One end of the extension mechanism (3) is fixed inside the main wing (1) via a mounting seat (17); The mounting seat (17) comprises a lower module (171) and an upper module (172); a fixing groove (1711) is provided at the top of the lower module (171); opposite sides of the fixing groove (1711) are connected to the side walls of the lower module (171); a fixing hole is provided at the bottom of the fixing groove (1711); a fixing through hole (1721) corresponding to the fixing hole is provided on the upper module (172); and a positioning pin (173) is inserted into the fixing hole through the fixing through hole (1721).

10. The deformable wing with elastic support and self-locking function and flush wing surface according to claim 9, characterized in that: Rear support seats (18) for supporting the rear end of the main wing (1) are provided on both sides of the mounting seat (17); and a plurality of weight-reducing holes (431) are provided at intervals along the length of the long plate (43).

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