A foldable wing structure suitable for a vertical take-off and landing aircraft
By setting up semi-ring mechanisms and deflection mechanisms, the wings of vertical take-off and landing aircraft can be folded and unfolded synchronously, solving the problems of large space occupation and inflexible fixed power unit, and improving folding performance and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Filing Date
- 2026-05-26
- Publication Date
- 2026-07-14
Smart Images
Figure CN122379871A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of aircraft technology, specifically a foldable wing structure suitable for vertical take-off and landing aircraft. Background Technology
[0002] Vertical takeoff and landing (VTOL) aircraft are increasingly widely used in urban air traffic, logistics delivery, and emergency rescue due to their runway-free operation and flexible takeoff and landing capabilities. These aircraft often employ a distributed electric propulsion layout, with multiple rotor power units circumferentially mounted on the wings or support arms. This results in a large spanwise dimension when the aircraft is stationary, making ground parking, transportation, and storage inconvenient. Therefore, the wing structure must possess a reliable folding function to significantly reduce the space occupied when not in flight.
[0003] Currently, there are two main methods for folding arms of multirotor aircraft: one is to use horizontal hinges to allow each arm to bend independently downwards or backwards, but this requires each arm to be folded individually, which is cumbersome, and the folded arms still occupy a significant amount of space in the height or length direction; the other is to use a quick-release structure, which can further reduce the size, but repeated disassembly and assembly are inconvenient, parts are easily lost, and connection rigidity is difficult to guarantee. Furthermore, existing folding mechanisms typically only provide a single folding function, and the mounting position and angle of the power unit on the arm are often fixed, making it impossible to flexibly adjust according to flight missions or changes in the center of gravity, resulting in insufficient adaptability. A few adjustable solutions suffer from problems such as unreliable locking and complex operation.
[0004] Therefore, there is an urgent need for a foldable wing structure that can achieve synchronous folding, reliable deployment and locking, and flexible adjustment of the power unit installation position and angle, in order to meet the usage requirements of vertical take-off and landing aircraft in multiple scenarios. Summary of the Invention
[0005] This invention provides a foldable wing structure suitable for vertical takeoff and landing aircraft, solving the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A foldable wing structure suitable for vertical takeoff and landing aircraft includes a first mounting semi-ring mechanism and a second mounting semi-ring mechanism. Two deflection mechanisms are provided between the first and second mounting semi-ring mechanisms, symmetrically arranged on the first and second mounting semi-ring mechanisms. Each deflection mechanism has a locking mechanism, and a mounting plate mechanism is provided between the locking mechanisms. Several folding arm assemblies are provided on the first and second mounting semi-ring mechanisms. Each folding arm assembly includes a positioning deflection block mechanism, a telescopic arm mechanism, an elastic positioning rod mechanism, and a motor fixing frame mechanism. The positioning deflection block mechanism is located on the first mounting semi-ring mechanism. Within the first or second mounting half-ring mechanism, the telescopic arm mechanism is mounted on the positioning deflection block mechanism. The elastic positioning rod mechanism is used to lock the length of the telescopic arm mechanism, and the motor fixing frame mechanism is used to fix the drive motor. The first and second mounting half-ring mechanisms are used to place the positioning deflection block mechanism. The deflection mechanism is used to realize the folding and unfolding of the first and second mounting half-ring mechanisms. The locking mechanism is used to adjust the locking state of the deflection mechanism. The positioning deflection block mechanism is used to lock the position of the telescopic arm mechanism. The elastic positioning rod mechanism is used to lock the extension state of the telescopic arm mechanism. The motor fixing frame mechanism is used to install and fix the motor.
[0008] As a preferred embodiment of the present invention, the first mounting half-ring mechanism includes a first mounting half-ring, the outer arc-shaped side of the first mounting half-ring is provided with a first arc-shaped groove, the inner arc-shaped side of the first mounting half-ring is provided with a first positioning groove, and the first arc-shaped groove and the first positioning groove are connected.
[0009] As a preferred embodiment of the present invention, the second mounting half-ring mechanism includes a second mounting half-ring, the outer arc-shaped side of the second mounting half-ring is provided with a second arc-shaped sliding groove, and the inner arc-shaped side of the second mounting half-ring is provided with a second positioning groove. The second arc-shaped sliding groove and the second positioning groove are connected. When the first mounting half-ring and the second mounting half-ring are in the unfolded state, the axes of the first mounting half-ring and the second mounting half-ring coincide.
[0010] As a preferred embodiment of the present invention, the deflection mechanism includes a first fixing plate fixed to the upper surface of the first mounting half-ring, the first fixing plate being rotatably connected to a deflection shaft, the end of the deflection shaft away from the first fixing plate being rotatably connected to a second fixing plate, the second fixing plate being fixed to the upper surface of the second mounting half-ring, and the length of the first fixing plate from the axis of the first mounting half-ring being longer than the length of the second fixing plate from the axis of the first mounting half-ring.
[0011] As a preferred embodiment of the present invention, the locking mechanism includes a mounting post fixed to the upper part of the second fixed plate, a limiting plate fixedly connected to the top of the mounting post, a locking plate slidably connected to the mounting post, the mounting post passing through the locking plate, the bottom contour of the locking plate being the same as the upper surface contour of the first fixed plate and the second fixed plate, the locking plate being rotatably connected to a first threaded rod, the top of the first threaded rod being fixedly connected to a first rotating handle, and a first threaded hole being provided on the upper part of the first fixed plate at a position corresponding to the first threaded rod, the inner diameter of the first threaded hole being the same as the outer diameter of the first threaded rod.
[0012] As a preferred embodiment of the present invention, the positioning deflection block mechanism includes a slider, which is disposed in a first arc-shaped groove or a second arc-shaped groove. The slider is slidably connected to a first mounting half-ring or a second mounting half-ring. A locking bolt is threadedly connected to the slider, and the nut of the locking bolt is disposed on the inner side of the first mounting half-ring or the second mounting half-ring. The locking bolt passes through the first positioning groove or the second positioning groove. A deflection seat is fixedly connected to the side of the slider. A rotating shaft is fixedly connected to the deflection seat. The deflection seat is provided with a plurality of second threaded holes arranged at equal angles with the rotating shaft as the axis. A second threaded rod is threadedly connected to the deflection seat. A second rotating handle is fixedly connected to the top end of the second threaded rod. The second threaded rod passes through the second threaded holes. The axis of the rotating shaft coincides with the axis of the first mounting half-ring and the second mounting half-ring.
[0013] As a preferred embodiment of the present invention, the telescopic arm mechanism includes a telescopic outer arm rotatably connected to a rotating shaft. The telescopic outer arm has a plurality of through holes arranged at equal angles around the rotating shaft. A second threaded rod passes through the through holes. The inner side of the telescopic outer arm is slidably connected to a telescopic inner arm. The side of the telescopic inner arm is provided with positioning holes arranged at equal intervals. The side of the telescopic outer arm is provided with insertion holes.
[0014] As a preferred embodiment of the present invention, the elastic positioning rod mechanism includes a pull plate, a tensioning sleeve fixedly connected to the middle of the pull plate, a compression spring fixedly connected to the inner side of the tensioning sleeve away from the pull plate, a sliding plate fixedly connected to the end of the compression spring near the pull plate, the sliding plate being located inside the tensioning sleeve, the sliding plate and the tensioning sleeve being slidably connected, a pull rod fixedly connected to the side of the sliding plate near the compression spring, the pull rod passing through the tensioning sleeve, the pull rod and the tensioning sleeve being slidably connected, a displacement shaft rotatably connected to the end of the pull rod away from the sliding plate, a limiting rod rotatably connected to the displacement shaft, the outer diameter of the tensioning sleeve being the same as the inner diameter of the insertion hole, and the maximum cross-section of the limiting rod being circular, the circle being the same shape and size as the insertion hole.
[0015] As a preferred embodiment of the present invention, the motor fixing frame mechanism includes a fixing frame fixed to the upper surface of the telescopic inner arm, a third threaded rod threadedly connected to the side of the fixing frame, a third rotating handle fixedly connected to one end of the third threaded rod located outside the fixing frame, a fixing arc plate rotatably connected to one end of the third threaded rod away from the third rotating handle, the fixing arc plate and the telescopic inner arm being slidably connected, and the surfaces of the fixing arc plate and the fixing frame are both provided with flexible material.
[0016] The present invention has the following advantages:
[0017] 1. By setting up a first mounting half-ring mechanism and a second mounting half-ring mechanism, the folding arm assembly can be placed and installed. The first mounting half-ring mechanism and the second mounting half-ring mechanism can be unfolded and folded through the deflection mechanism. With the locking mechanism, the unfolded state can be reliably locked, which greatly improves the performance, convenience and safety of wing folding of vertical take-off and landing aircraft.
[0018] 2. The slider of the positioning deflection block mechanism can slide circumferentially along the arc-shaped slide groove and can be locked arbitrarily by locking bolts, realizing flexible adjustment of the circumferential installation position of the power unit; the axis of rotation of the deflection seat coincides with the axis of the installation half ring, and combined with the multi-angle threaded holes and the through holes of the telescopic outer arm, the deflection angle of the telescopic arm can be precisely adjusted, which can meet the requirements of rotor installation angle in different flight modes.
[0019] 3. The telescopic arm mechanism, in conjunction with the elastic positioning rod mechanism, allows for quick unlocking and locking of the telescopic length simply by pulling the pull plate and rotating the limit rod. The elastic locking force is constant and reliable, adaptable to different spanwise dimension requirements, and improves the aircraft's adaptability to different mission payloads.
[0020] 4. The motor fixing frame mechanism adopts an arc plate clamping method driven by a threaded rod and is equipped with a flexible pad, which not only ensures that the motor is firmly fixed, but also effectively absorbs high-frequency vibration, protects the power unit, and extends its service life. Attached Figure Description
[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0022] Figure 1 This is a first-person view structural diagram of a foldable wing structure suitable for vertical take-off and landing aircraft.
[0023] Figure 2 This is a second-view structural schematic diagram of a foldable wing structure suitable for vertical take-off and landing aircraft.
[0024] Figure 3 for Figure 2 A magnified view of region A in the middle.
[0025] Figure 4 This is a first-view structural diagram of a folding arm assembly in a foldable wing structure suitable for vertical take-off and landing aircraft.
[0026] Figure 5 This is a second-view structural diagram of a folding arm assembly in a foldable wing structure suitable for vertical take-off and landing aircraft.
[0027] Figure 6 This is a cross-sectional view of the elastic positioning rod mechanism in the folding arm assembly of a foldable wing structure suitable for vertical take-off and landing aircraft.
[0028] In the diagram: 1. First mounting semi-ring mechanism; 101. First mounting semi-ring; 102. First arc-shaped slide groove; 103. First positioning groove; 2. Second mounting semi-ring mechanism; 201. Second mounting semi-ring; 202. Second arc-shaped slide groove; 203. Second positioning groove; 3. Deflection mechanism; 301. First fixing plate; 302. Deflection shaft; 303. Second fixing plate; 4. Locking mechanism; 401. Mounting column; 402. Limiting plate; 403. Locking plate; 404. First threaded rod; 405. First rotating handle; 406. First threaded hole; 5. Mounting plate mechanism; 6. Positioning deflection block mechanism; 601 602. Slider; 603. Locking bolt; 604. Deflection seat; 605. Rotating shaft; 606. Second threaded hole; 607. Second threaded rod; 608. Second rotating handle; 709. Telescopic arm mechanism; 7001. Telescopic outer arm; 702. Telescopic inner arm; 703. Positioning hole; 8002. Elastic positioning rod mechanism; 801. Pull plate; 802. Tensioning sleeve; 803. Compression spring; 804. Slide plate; 805. Pull rod; 806. Displacement shaft; 807. Limiting rod; 9003. Motor fixing frame mechanism; 901. Fixing frame; 902. Third threaded rod; 903. Third rotating handle; 904. Fixing arc plate. Detailed Implementation
[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0030] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.
[0031] For examples, please refer to Figures 1-6 A foldable wing structure suitable for vertical takeoff and landing aircraft includes a first mounting semi-ring mechanism 1 and a second mounting semi-ring mechanism 2. A deflection mechanism 3 is provided between the first mounting semi-ring mechanism 1 and the second mounting semi-ring mechanism 2. Two deflection mechanisms 3 are symmetrically arranged on the first mounting semi-ring mechanism 1 and the second mounting semi-ring mechanism 2. A locking mechanism 4 is provided on each deflection mechanism 3, and a mounting plate mechanism 5 is provided between the locking mechanisms 4. Several folding arm assemblies are provided on the first mounting semi-ring mechanism 1 and the second mounting semi-ring mechanism 2. Each folding arm assembly includes a positioning deflection block mechanism 6, a telescopic arm mechanism 7, an elastic positioning rod mechanism 8, and a motor fixing frame mechanism 9. The positioning deflection block mechanism 6 is located on the first mounting semi-ring mechanism 1. Within the ring mechanism 1 or the second mounting half-ring mechanism 2, the telescopic arm mechanism 7 is mounted on the positioning deflection block mechanism 6. The elastic positioning rod mechanism 8 is used to lock the length of the telescopic arm mechanism 7, and the motor fixing frame mechanism 9 is used to fix the drive motor. The first mounting half-ring mechanism 1 and the second mounting half-ring mechanism 2 are used to place the positioning deflection block mechanism 6. The deflection mechanism 3 is used to realize the folding and unfolding of the first mounting half-ring mechanism 1 and the second mounting half-ring mechanism 2. The locking mechanism 4 is used to adjust the locking state of the deflection mechanism 3. The positioning deflection block mechanism 6 is used to lock the position of the telescopic arm mechanism 7. The elastic positioning rod mechanism 8 is used to lock the extension state of the telescopic arm mechanism 7. The motor fixing frame mechanism 9 is used to install and fix the motor.
[0032] The first mounting semi-ring mechanism 1 includes a first mounting semi-ring 101. The outer arc-shaped side of the first mounting semi-ring 101 is provided with a first arc-shaped groove 102, and the inner arc-shaped side of the first mounting semi-ring 101 is provided with a first positioning groove 103. The first arc-shaped groove 102 and the first positioning groove 103 are connected. The second mounting semi-ring mechanism 2 includes a second mounting semi-ring 201. The outer arc-shaped side of the second mounting semi-ring 201 is provided with a second arc-shaped groove 202, and the inner arc-shaped side of the second mounting semi-ring 201 is provided with a second positioning groove 203. The second arc-shaped groove 202 and the second positioning groove 203 are connected. When the first mounting semi-ring 101 and the second mounting semi-ring 201 are in the unfolded state, their axes coincide. The deflection mechanism 3 includes a first fixing plate 301 fixed to the upper surface of the first mounting half-ring 101, the first fixing plate 301 being rotatably connected to a deflection shaft 302, and the end of the deflection shaft 302 away from the first fixing plate 301 being rotatably connected to a second fixing plate 303, the second fixing plate 303 being fixed to the upper surface of the second mounting half-ring 201, and the length of the first fixing plate 301 from the axis of the first mounting half-ring 101 being longer than the length of the second fixing plate 303 from the axis of the first mounting half-ring 101.
[0033] Specifically, when the entire wing structure is in the flight deployment state, the axes of the first mounting half-ring 101 and the second mounting half-ring 201 coincide, and together they are spliced into a complete ring-shaped load-bearing frame for mounting multiple folding arm assemblies.
[0034] In addition, since the distance between the first fixing plate 301 and the axis of the first mounting half ring 101 is greater than the distance between the second fixing plate 303 and the axis, when folding, the first mounting half ring 101 can be rotated around the deflection axis 302 and stacked above or below the second mounting half ring 201 in a staggered manner, thereby greatly reducing the space occupied in the longitudinal direction.
[0035] The locking mechanism 4 includes a mounting post 401 fixed to the upper part of the second fixing plate 303, a limiting plate 402 fixedly connected to the top of the mounting post 401, a locking plate 403 slidably connected to the mounting post 401, the mounting post 401 passing through the locking plate 403, the bottom contour of the locking plate 403 being the same as the upper surface contour of the first fixing plate 301 and the second fixing plate 303, the locking plate 403 being rotatably connected to the first threaded rod 404, the top of the first threaded rod 404 being fixedly connected to the first rotating handle 405, the upper part of the first fixing plate 301 being provided with a first threaded hole 406 corresponding to the position of the first threaded rod 404, the inner diameter of the first threaded hole 406 being the same as the outer diameter of the first threaded rod 404.
[0036] Specifically, after the two halves of the ring are fully extended, the sliding locking plate 403 slides down to bring its bottom surface against the top surface of the two fixed plates. Then, the first rotating handle 405 is rotated to screw the first threaded rod 404 into the first threaded hole 406 and press it in place. This rigidly connects the first fixed plate 301 and the second fixed plate 303 into one unit, preventing the halves of the ring from folding accidentally during flight. A mounting plate mechanism 5 is fixedly connected between the limiting plates 402 of the two locking mechanisms 4 for connection to the aircraft fuselage.
[0037] The positioning deflection block mechanism 6 includes a slider 601, which is disposed within a first arc-shaped groove 102 or a second arc-shaped groove 202. The slider 601 is slidably connected to a first mounting half-ring 101 or a second mounting half-ring 201. A locking bolt 602 is threadedly connected to the slider 601. The nut of the locking bolt 602 is located on the inner side of the first mounting half-ring 101 or the second mounting half-ring 201. The locking bolt 602 passes through a first positioning groove 103 or a second positioning groove 203. The side of the slider 601 is fixed. A fixed deflection seat 603 is fixedly connected to a rotating shaft 604. The deflection seat 603 is provided with a plurality of second threaded holes 605 arranged at equal angles with the rotating shaft 604 as the axis. The deflection seat 603 is threadedly connected to a second threaded rod 606. The top end of the second threaded rod 606 is fixedly connected to a second rotating handle 607. The second threaded rod 606 passes through the second threaded holes 605. The axis of the rotating shaft 604 coincides with the axis of the first mounting half ring 101 and the second mounting half ring 201.
[0038] Specifically, the positioning deflection block mechanism 6 is used to mount the telescopic arm mechanism 7 on the semi-ring with adjustable position and angle. It includes a slider 601, which is slidably disposed within the first arc-shaped groove 102 or the second arc-shaped groove 202 and mates with the groove contour of the semi-ring. A locking bolt 602 passes through the first positioning groove 103 or the second positioning groove 203 from the inside of the semi-ring and is screwed into the threaded hole of the slider 601. Tightening the locking bolt 602 presses the slider 601 firmly onto the semi-ring, thereby fixing its circumferential position. A deflection seat 603 is fixedly connected to the side of the slider 601. A rotating shaft 604 is fixed on the deflection seat 603, and the axis of the rotating shaft 604 coincides with the axis of the first mounting semi-ring 101 and the second mounting semi-ring 201. The deflector 603 has multiple second threaded holes 605 at equal angles with the rotating shaft 604 as the center. The second threaded rod 606 passes through one of the second threaded holes 605 on the deflector 603, and the top of the rod is fixed with a second rotating handle 607.
[0039] The telescopic arm mechanism 7 includes a telescopic outer arm 701 rotatably connected to a rotating shaft 604. The telescopic outer arm 701 has several through holes arranged at equal angles around the rotating shaft 604. The second threaded rod 606 passes through the through holes. The inner side of the telescopic outer arm 701 is slidably connected to a telescopic inner arm 702. The side of the telescopic inner arm 702 is provided with positioning holes 703 arranged at equal intervals. The side of the telescopic outer arm 701 is provided with insertion holes.
[0040] Specifically, one end of the telescopic arm 701 is rotatably connected to the rotating shaft 604, allowing it to swing around the rotating shaft 604. Multiple through holes are equally spaced on the telescopic arm 701 around the rotating shaft 604. The second threaded rod 606 can pass through different through holes and then be screwed into the corresponding second threaded hole 605, thereby locking the telescopic arm 701 at the desired deflection angle.
[0041] The elastic positioning rod mechanism 8 includes a pull plate 801, a tensioning sleeve 802 fixedly connected to the middle of the pull plate 801, a compression spring 803 fixedly connected to the inner end of the tensioning sleeve 802 away from the pull plate 801, a sliding plate 804 fixedly connected to the end of the compression spring 803 near the pull plate 801, the sliding plate 804 being located inside the tensioning sleeve 802, the sliding plate 804 and the tensioning sleeve 802 being slidably connected, a pull rod 805 fixedly connected to the side of the sliding plate 804 near the compression spring 803, the pull rod 805 passing through the tensioning sleeve 802, the pull rod 805 and the tensioning sleeve 802 being slidably connected, a displacement shaft 806 rotatably connected to the end of the pull rod 805 away from the sliding plate 804, and a limiting rod 807 rotatably connected to the outer diameter of the tensioning sleeve 802 and the inner diameter of the insertion hole, the maximum cross-section of the limiting rod 807 being circular, the circle being the same shape and size as the insertion hole.
[0042] Specifically, when adjusting the telescopic length, pull the pull plate 801 outward to disengage the tension sleeve 802 from the insertion hole. Then, move the limiting rod 807 so that it is coaxial with the pull rod 805, allowing the limiting rod 807 to be pulled out of the positioning hole 703. Then, freely pull the telescopic inner arm 702 to the target position. Once in position, re-pass the limiting rod 807 through the insertion hole and insert it into the corresponding positioning hole 703. Release the pull plate 801, compress the spring 803 to push the slide plate 804 and pull rod 805 back, and the stepped surface of the limiting rod 807 will press tightly against the inner wall of the telescopic outer arm 701, forming an elastic lock to prevent it from disengaging during flight vibrations.
[0043] The motor fixing frame mechanism 9 includes a fixing frame 901 fixed to the upper surface of the telescopic inner arm 702. The side of the fixing frame 901 is threadedly connected to a third threaded rod 902. One end of the third threaded rod 902 located outside the fixing frame 901 is fixedly connected to a third rotating handle 903. One end of the third threaded rod 902 away from the third rotating handle 903 is rotatably connected to a fixing arc plate 904. The fixing arc plate 904 and the telescopic inner arm 702 are slidably connected. The surfaces of the fixing arc plate 904 and the fixing frame 901 are both provided with flexible material.
[0044] Specifically, after placing the motor into the fixed frame 901, rotate the third rotating handle 903 to press the fixed arc plate 904 against the motor housing, thus achieving a secure installation with vibration reduction effect.
[0045] The workflow of this invention is as follows:
[0046] I. Unfolding and Folding Operations
[0047] Unlocking process:
[0048] In the initial folded state, the first mounting half-ring 101 is stacked on top of the second mounting half-ring 201. When unfolding, manually rotate the first mounting half-ring 101 around the deflection axis 302 until the axes of the first mounting half-ring 101 and the second mounting half-ring 201 coincide, forming a complete ring. At this point, the top surfaces of the first fixing plate 301 and the second fixing plate 303 are flush. Slide the locking plate 403 down along the mounting post 401, so that its bottom contour straddles the upper surfaces of both the first and second fixing plates 301. Rotate the first rotating handle 405, causing the first threaded rod 404 to screw into the first threaded hole 406 on the first fixing plate 301 and tighten. The locking plate 403 rigidly presses the two fixing plates together, completing the reliable locking of the unfolded state.
[0049] Folding process:
[0050] When folding is required, rotate the first rotating handle 405 in the opposite direction to disengage the first threaded rod 404 from the first threaded hole 406. Lift the locking plate 403 so that it rises along the mounting post 401, releasing the constraints on the first fixing plate 301 and the second fixing plate 303. Then, rotate the first mounting half-ring 101 around the deflection shaft 302 so that the first mounting half-ring 101 overlaps with the second mounting half-ring 201, completing the folding and reducing the overall span dimension of the machine.
[0051] II. Adjustment of the circumferential position and angle of the folding arm
[0052] Circumferential position adjustment:
[0053] Loosen the locking bolt 602 of the corresponding folding arm assembly to release the clamping force between the slider 601 and the first mounting half-ring 101 or the second mounting half-ring 201. Slide the slider 601 along the first arc-shaped slide groove 102 or the second arc-shaped slide groove 202 to the target circumferential position, and retighten the locking bolt 602 to press and fix the slider 601 in the arc-shaped slide groove, thus completing the adjustment of the circumferential mounting position of the power unit on the annular base.
[0054] Installation angle adjustment:
[0055] Release the second rotating handle 607 and unscrew the second threaded rod 606 from the current second threaded hole 605 on the deflector seat 603 and the through hole on the telescopic outer arm 701. Rotate the telescopic outer arm 701 around the rotating axis 604 to the desired deflection angle, aligning the corresponding through hole on the telescopic outer arm 701 with the corresponding second threaded hole 605 on the deflector seat 603. Re-screw the second threaded rod 606 and tighten it to lock the telescopic outer arm 701 at the new angle. Since the axis of the rotating axis 604 coincides with the axis of the mounting semi-ring, the angle adjustment action is symmetrical with the center of the annular bearing structure, ensuring the consistency of the adjustment of each arm.
[0056] III. Telescopic boom length adjustment
[0057] Pull the pull plate 801 outward. The pull plate 801, through the tension sleeve 802 and the pull rod 805, overcomes the force of the compression spring 803, pulling the stepped surface of the limiting rod 807 away from the inner wall of the telescopic outer arm 701. Move the limiting rod 807 so that it rotates around the displacement shaft 806 until it is coaxial with the pull rod 805. At this time, the limiting rod 807 can be completely pulled out from the insertion hole on the side wall of the telescopic outer arm 701 and the positioning hole 703 on the telescopic inner arm 702. Freely pull the telescopic inner arm 702 to the required extension length, so that the target positioning hole 703 is aligned with the insertion hole on the telescopic outer arm 701. Pass the limiting rod 807 back through the insertion hole and the corresponding positioning hole 703, release the pull plate 801, and the compression spring 803 pushes the slide plate 804 and the pull rod 805 to retract. The stepped surface of the limiting rod 807 is once again pressed tightly against the inner wall of the telescopic outer arm 701, achieving elastic locking of the telescopic length.
[0058] IV. Drive Motor Installation
[0059] Place the drive motor within the fixed frame 901 on the upper surface of the telescopic inner arm 702. Rotate the third rotating handle 903, causing the third threaded rod 902 to rotate, pushing the fixed arc plate 904 to slide along the surface of the telescopic inner arm 702 and press against the motor housing. Continue tightening until the fixed arc plate 904 and the inner wall of the fixed frame 901 reliably clamp the motor. The flexible material attached to the inner surfaces of the fixed arc plate 904 and the fixed frame 901 provides vibration damping protection while clamping.
[0060] Through the above process, the unfolding and folding of the foldable wing structure can be realized, and the power unit can be flexibly and quickly adjusted in circumferential position, radial length and pitch angle to meet the layout requirements of different flight missions.
[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A foldable wing structure suitable for vertical takeoff and landing aircraft, comprising a first mounting semi-ring mechanism and a second mounting semi-ring mechanism, characterized in that, A deflection mechanism is provided between the first and second mounting semi-ring mechanisms. Two deflection mechanisms are symmetrically arranged on the first and second mounting semi-ring mechanisms. Each deflection mechanism has a locking mechanism, and a mounting plate mechanism is provided between the locking mechanisms. Several folding arm assemblies are provided on the first and second mounting semi-ring mechanisms. Each folding arm assembly includes a positioning deflection block mechanism, a telescopic arm mechanism, an elastic positioning rod mechanism, and a motor fixing frame mechanism. The positioning deflection block mechanism is located within either the first or second mounting semi-ring mechanism, and the telescopic arm mechanism is located within... On the positioning deflection block mechanism, the elastic positioning rod mechanism is used to lock the length of the telescopic arm mechanism, and the motor fixing frame mechanism is used to fix the drive motor; the first mounting half-ring mechanism and the second mounting half-ring mechanism are used to place the positioning deflection block mechanism, the deflection mechanism is used to realize the folding and unfolding of the first mounting half-ring mechanism and the second mounting half-ring mechanism, the locking mechanism is used to adjust the locking state of the deflection mechanism, the positioning deflection block mechanism is used to lock the position of the telescopic arm mechanism, the elastic positioning rod mechanism is used to lock the extension state of the telescopic arm mechanism, and the motor fixing frame mechanism is used to install and fix the motor.
2. The foldable wing structure for vertical takeoff and landing aircraft according to claim 1, characterized in that, The first mounting half-ring mechanism includes a first mounting half-ring, the outer arc-shaped side of the first mounting half-ring is provided with a first arc-shaped groove, the inner arc-shaped side of the first mounting half-ring is provided with a first positioning groove, and the first arc-shaped groove and the first positioning groove are connected.
3. The foldable wing structure suitable for vertical takeoff and landing aircraft according to claim 2, characterized in that, The second mounting half-ring mechanism includes a second mounting half-ring. The outer arc-shaped side of the second mounting half-ring is provided with a second arc-shaped sliding groove, and the inner arc-shaped side of the second mounting half-ring is provided with a second positioning groove. The second arc-shaped sliding groove and the second positioning groove are connected. When the first mounting half-ring and the second mounting half-ring are in the unfolded state, the axes of the first mounting half-ring and the second mounting half-ring coincide.
4. The foldable wing structure for vertical takeoff and landing aircraft according to claim 3, characterized in that, The deflection mechanism includes a first fixing plate fixed to the upper surface of the first mounting half ring, the first fixing plate being rotatably connected to a deflection shaft, and the end of the deflection shaft away from the first fixing plate being rotatably connected to a second fixing plate, the second fixing plate being fixed to the upper surface of the second mounting half ring, and the length of the first fixing plate from the axis of the first mounting half ring being longer than the length of the second fixing plate from the axis of the first mounting half ring.
5. The foldable wing structure for vertical takeoff and landing aircraft according to claim 4, characterized in that, The locking mechanism includes a mounting post fixed to the upper part of the second fixed plate, a limiting plate fixedly connected to the top of the mounting post, a locking plate slidably connected to the mounting post, the mounting post passing through the locking plate, the bottom contour of the locking plate being the same as the upper surface contour of the first fixed plate and the second fixed plate, the locking plate being rotatably connected to a first threaded rod, the top of the first threaded rod being fixedly connected to a first rotating handle, and a first threaded hole being provided on the upper part of the first fixed plate at a position corresponding to the first threaded rod, the inner diameter of the first threaded hole being the same as the outer diameter of the first threaded rod.
6. The foldable wing structure for vertical takeoff and landing aircraft according to claim 3, characterized in that, The positioning deflection block mechanism includes a slider, which is disposed in a first arc-shaped groove or a second arc-shaped groove. The slider is slidably connected to a first mounting half-ring or a second mounting half-ring. A locking bolt is threadedly connected to the slider. The nut of the locking bolt is located inside the first mounting half-ring or the second mounting half-ring. The locking bolt passes through the first positioning groove or the second positioning groove. A deflection seat is fixedly connected to the side of the slider. A rotating shaft is fixedly connected to the deflection seat. The deflection seat is provided with a plurality of second threaded holes arranged at equal angles with the rotating shaft as the axis. A second threaded rod is threadedly connected to the deflection seat. A second rotating handle is fixedly connected to the top end of the second threaded rod. The second threaded rod passes through the second threaded holes. The axis of the rotating shaft coincides with the axis of the first mounting half-ring and the second mounting half-ring.
7. The foldable wing structure for vertical takeoff and landing aircraft according to claim 6, characterized in that, The telescopic arm mechanism includes a telescopic outer arm that is rotatably connected to a rotating shaft. The telescopic outer arm has several through holes at equal angles around the rotating shaft. A second threaded rod passes through the through holes. The inner side of the telescopic outer arm is slidably connected to a telescopic inner arm. The side of the telescopic inner arm has positioning holes that are evenly spaced. The side of the telescopic outer arm has insertion holes.
8. The foldable wing structure for vertical takeoff and landing aircraft according to claim 7, characterized in that, The elastic positioning rod mechanism includes a pull plate, a tensioning sleeve fixedly connected to the middle of the pull plate, a compression spring fixedly connected to the inner end of the tensioning sleeve away from the pull plate, a sliding plate fixedly connected to the end of the compression spring near the pull plate, the sliding plate being located inside the tensioning sleeve, the sliding plate and the tensioning sleeve being slidably connected, a pull rod fixedly connected to the side of the sliding plate near the compression spring, the pull rod passing through the tensioning sleeve, the pull rod and the tensioning sleeve being slidably connected, a displacement shaft rotatably connected to the end of the pull rod away from the sliding plate, and a limiting rod rotatably connected to the displacement shaft, the outer diameter of the tensioning sleeve being the same as the inner diameter of the insertion hole, and the maximum cross-section of the limiting rod being circular, the circle being the same shape and size as the insertion hole.
9. The foldable wing structure for vertical takeoff and landing aircraft according to claim 7, characterized in that, The motor fixing frame mechanism includes a fixing frame fixed to the upper surface of the telescopic inner arm. The side of the fixing frame is threadedly connected to a third threaded rod. One end of the third threaded rod located outside the fixing frame is fixedly connected to a third rotating handle. The end of the third threaded rod away from the third rotating handle is rotatably connected to a fixing arc plate. The fixing arc plate and the telescopic inner arm are slidably connected. The surfaces of the fixing arc plate and the fixing frame are both provided with flexible material.