Translation rotating type folding and unfolding locking mechanism suitable for folding wing

Abstract

According to the translation rotating type folding and unfolding locking mechanism suitable for the folding wing, the folding and unfolding mechanism and the locking mechanism are provided, the folding and unfolding mechanism is installed on a fixed wing, and the folding wing is driven to be folded and unfolded relative to the fixed wing; the locking mechanism is used for relatively locking the position between the folding wing and the fixed wing; the folding and unfolding mechanism comprises a servo motor, a telescopic rod, a linear sliding rail, a supporting sliding block, a rotating shaft, a semi-U-shaped sliding groove support, a gear reducer and an electromagnetic lock. Optical shafts of the rotating shafts penetrate through inner holes of the supporting sliding blocks, and one ends are connected with flanges to be fixedly connected with folding wings; the V-shaped bearing at the other end is connected with the semi-U-shaped sliding groove of the semi-U-shaped sliding groove support in an embedded mode, the V-shaped bearing slides in the semi-U-shaped sliding groove support in a limited mode, rotation and sliding of the rotating shaft are implemented, and the folding wings are driven to be unfolded or folded. The folding wings are pushed to slide and rotate along the curved surface sliding grooves in a linear driving mode, two sequential actions of translation and rotation of the folding wings are achieved, and the folding and unfolding actions are coherent.

Description

Technical Field

[0001] This invention belongs to the field of folding and unfolding device technology, and specifically relates to a translational and rotating folding and unfolding locking mechanism suitable for folding wings. Background Technology

[0002] In traditional folding wing deployment mechanisms, the folding wing is deployed and folded by driving it to rotate around a fixed wing along a fixed axis. This approach requires modifying the mating profile of the wing surface to avoid localized structural interference or scraping caused by direct rotation along the axis of rotation. After deployment, aircraft using this method will exhibit geometrical abrupt changes in shape, such as gaps, protrusions, or steps, at the mating point between the folding wing and the fixed wing.

[0003] With the increasing speed and performance of aircraft, more stringent requirements have been placed on the docking surface structure of folding wings. After deployment, the docking surface structure must maintain a tight seal and optimal shape to prevent localized heat concentration (hot spots) at the docking point due to abnormal shapes. This necessitates that when the folding wing is fully deployed, the docking point with the fixed wing be perfectly flush, and its outline should remain as smooth and continuous as possible. Therefore, a folding mechanism is needed to design a docking profile surface that requires no modification.

[0004] Currently, typical exhibition agencies found to be operating at discounted prices mainly include the following types:

[0005] A torsion spring hinge folding mechanism, such as the one described in Chinese patent CN116477046A (titled "A Lateral Folding and Unfolding Mechanism for Aircraft Control Surfaces"), connects the upper and lower control surfaces with a torsion spring hinge and a locking assembly. The upper control surface rotates around a rotation axis relative to the lower control surface to fold or unfold, while the locking assembly simultaneously locks the upper control surface in place. This design employs a direct rotational approach. When fully unfolded, a certain gap exists between the folding wing and the fixed wing. This gap places high demands on the internal sealing and heat insulation of the wing. Furthermore, the folding and unfolding drive force is the torsion spring force, preventing repeated folding and unfolding. The torsion spring, as a connecting component on the rotation axis, is not securely fitted, making stable and uniform folding and unfolding impossible.

[0006] Gear-meshing folding and unfolding mechanisms, such as the folding and unfolding locking mechanism for space optical payloads (Chinese patent CN115743611A), feature an integrated folding and unfolding and locking mechanism. This mechanism uses a drive motor and a locking motor to drive a worm gear and a locking screw to achieve folding and unfolding. However, this solution employs multiple gear reduction schemes, resulting in a complex structure. Furthermore, the worm gear drive method is inefficient and unsuitable for flat, compact spaces and heavy load conditions.

[0007] A translational outward-opening folding mechanism based on parallel linkages, such as the one described in Chinese patent CN117868621A (titled "A Translational Outward-Opening Cabin Door Hinge Mechanism"), includes a hinge support, a splined shaft, a hinge joint, and a rocker arm. It utilizes a double parallelogram mechanism to drive the cabin door to rotate around a pivot point in the opposite direction to the main hinge, but at an angle equal to the rotation angle. This allows the cabin door to move parallel to the fuselage shape when opened. This scheme achieves the goal of avoiding modification of the wing surface's docking profile through reverse relative rotation. However, the cantilevered state of this scheme has limited load-bearing capacity, the lever principle's driving efficiency is not high, the system stiffness after deployment is poor, and the normal space requirement is high. Summary of the Invention

[0008] In order to overcome the shortcomings of the prior art, the inventors have conducted intensive research and provided a translational rotational folding and locking mechanism suitable for folding wings. The mechanism has a compact structure, smooth drive, and repeatable folding and unfolding function. After folding and unfolding, it can maintain the position locked. In the locked state, the mechanism can adapt to flight conditions such as transportation, vibration, and impact, thus completing the present invention.

[0009] The technical solution provided by this invention is as follows:

[0010] A translational-rotational folding and locking mechanism for folding wings includes: a folding mechanism and a locking mechanism;

[0011] The folding mechanism is mounted on the fixed wing and drives the folding wing to fold and unfold relative to the fixed wing; the locking mechanism locks the relative positions of the folding wing and the fixed wing.

[0012] The folding mechanism includes a servo motor, a telescopic rod, a linear slide rail, a support slider, a rotating shaft, a semi-U-shaped slide bracket, a gear reducer, and an electromagnetic lock. The servo motor drives the telescopic rod as a power source, and the telescopic rod is fixedly connected to the support slider. Under the drive of the servo motor, the support slider moves back and forth linearly along the linear slide rail. The rotating shaft has a central optical axis, a connecting flange on one side, and a V-bearing on the other side. The optical axis of the rotating shaft passes through the inner hole of the support slider and can rotate freely within the inner hole of the support slider. The connecting flange of the rotating shaft is fixedly connected to the folding wing. The V-bearing of the rotating shaft is embedded in the semi-U-shaped slide of the semi-U-shaped slide bracket. The rotation and sliding of the rotating shaft are achieved by limiting the sliding of the V-bearing in the semi-U-shaped slide bracket, thereby driving the folding wing to unfold or fold. The input end of the gear reducer is connected to the servo motor to convert the rotation of the servo motor into a parallel output, and the output end is connected to the electromagnetic lock. The position of the entire mechanism is locked by utilizing the power-off self-locking function of the electromagnetic lock.

[0013] The translational-rotational folding and locking mechanism for folding wings provided by the present invention has the following advantages:

[0014] (1) The present invention provides a translational rotational folding and locking mechanism suitable for folding wings. Through the sliding cooperation of a semi-U-shaped slide rail and a V-shaped bearing, the folding wing is pushed to slide along the curved slide groove by a linear drive. The folding wing realizes two sequential actions of translation and rotation of the folding wing with one mechanism. The folding and unfolding actions are continuous and the structure is simple and efficient.

[0015] (2) The present invention provides a translational rotation folding and locking mechanism suitable for folding wings. By arranging a semi-U-shaped slide rail on the fixed wing base plate and arranging an L-shaped rotating shaft perpendicular to the semi-U-shaped slide rail, the entire mechanism is built into the flat space of the wing surface. There is no need to set a protruding structure at the wing surface contact position. While improving the support rigidity, it greatly saves the installation space in the Z direction, thereby simplifying the aerodynamic shape design of the aircraft and effectively improving the aerodynamic performance of the aircraft.

[0016] (3) The present invention provides a translational rotational folding and locking mechanism suitable for folding wings. By arranging tapered pin holes and locking pins on the mating surfaces of the folding wing and the fixed wing, the position locking of the folding wing in the Y and Z directions after folding and unfolding is achieved. The position locking of the folding wing in the X direction is achieved by the electromagnetic lock of the folding and unfolding mechanism. This locking scheme has high reliability and wide applicability.

[0017] (4) The present invention provides a translational rotational folding and locking mechanism suitable for folding wings. The conical pin hole seat and the locking pin are provided with a centering section and a locking section, which can adapt to a certain centering deviation. The locking process of the pin hole seat and the locking pin has automatic centering capability. The pin hole seat realizes real-time judgment of the locking state of the pin hole seat and the locking pin by installing a contact switch at the bottom.

[0018] (5) The present invention provides a translational rotational folding and locking mechanism suitable for folding wings. By adding a heat insulation pad at the connecting flange, the high temperature on the surface of the folding wing is prevented from being introduced into the internal space of the wing through the connecting flange, which effectively protects the instruments and equipment inside the wing from high temperature impact damage, and also improves its vibration reduction and impact resistance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the unfolding process of a translational-rotational folding and locking mechanism for folding wings according to the present invention;

[0020] Figure 2 This is a schematic diagram of a translational-rotational folding and locking mechanism for folding wings in the folded state, according to the present invention.

[0021] Figure 3 This is a schematic diagram of a translational-rotational folding and locking mechanism for folding wings in the unfolded state, according to the present invention.

[0022] Figure 4 This is a schematic diagram of the folding and unfolding mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram showing the installation of the folding mechanism and the fixed wing of the present invention;

[0024] Figure 6 This is a schematic diagram of the installation of the folding mechanism and folding wings of the present invention;

[0025] Figure 7 This is a diagram showing the motion trajectory of the V-shaped bearing during the deployment of the folding wing of this invention.

[0026] Figure 8 This is a schematic diagram showing the position of the locking mechanism of the present invention;

[0027] Figure 9 This is a schematic diagram of the pin hole seat of the present invention;

[0028] Figure 10 This is a schematic diagram of the locking pin structure of the present invention;

[0029] Figure 11 This is a schematic diagram of the centering and locking process of the locking mechanism of the present invention. Detailed Implementation

[0030] The features and advantages of the present invention will become clearer and more apparent from the following detailed description.

[0031] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0032] This invention provides a translational-rotational folding and locking mechanism suitable for folding wings, comprising a folding mechanism 2 and a locking mechanism 4. See also... Figure 1This diagram illustrates the unfolding process of a translational-rotational folding and locking mechanism for folding wings provided by the present invention. Centerline m is the symmetrical centerline of folding wing 1, and centerline n is the symmetrical centerline of fixed wing 3. The angle between centerline m and centerline n is defined as P. In Figure (a), angle P = 90°, and this state is defined as the folded state; in Figure (b), the range of angle P is 90° < P < 180°, and this state is defined as the unfolding state of the folding wing; in Figure (c), angle P = 180°, and this state is defined as the unfolded state. In this state, the distance between the mating surfaces of folding wing 1 and fixed wing 3 is L, and the range of L is 20mm to 150mm; in Figure (d), angle P = 180°, and the distance between the mating surfaces of folding wing 1 and fixed wing 3 is 0, and this state is defined as the locked state. The unfolding process of the folding wing in this invention involves the folding and locking mechanism sequentially driving the folding wing from state (a) to states (b), (c), and (d). The retraction process of the folding wing in this invention involves the folding and locking mechanism sequentially driving the folding wing from state (d) to states (c), (b), and (a).

[0033] See Figure 2 This diagram illustrates a translational-rotational folding and locking mechanism for folding wings provided by the present invention in a folded state. A fixed wing 3 is fixed to the aircraft fuselage as a fixed unit, and two folding and locking mechanisms 2 are fixedly mounted on the fixed wing 3 in a mirror image state. The folding and locking mechanisms 2 drive the folding wing 1 to fold and unfold relative to the fixed wing 3. A locking mechanism 4 is used to lock the relative position between the folding wing 1 and the fixed wing 3. The locking mechanism 4 consists of two identical structures, distributed and installed on both sides of the mating surface. In the folded state, the locking mechanism 4 is in an unlocked state. The coordinate system (X, Y, Z directions) of the translational-rotational folding and locking mechanism for folding wings described in this invention is defined as follows: Figure 2 As shown.

[0034] See Figure 3 The diagram shows a translational-rotational folding and locking mechanism for folding wings provided by the present invention in the unfolded state. In the unfolded state, the locking mechanism 4 is in a fully locked state.

[0035] See Figure 4The diagram shows the structural schematic of the folding mechanism of the present invention. The folding mechanism 2 includes a servo motor 2-1, a telescopic rod 2-2, a linear slide rail 2-3, a support slider 2-4, a rotating shaft 2-5, a semi-U-shaped slide rail bracket 2-6, a gear reducer 2-7, and an electromagnetic lock 2-8. The rotating shaft 2-5 has a central optical axis 2-5-3, a connecting flange 2-5-1 on one side, and a V-bearing 2-5-2 on the other side. The servo motor 2-1 acts as a power source to drive the telescopic rod 2-2, which is fixedly connected to the support slider 2-4. Under the drive of the servo motor 2-1, the support slider 2-4 reciprocates linearly along the linear slide rail 2-3. The optical axis 2-5-3 of the rotating shaft 2-5 passes through the inner hole of the support slider 2-4, allowing it to rotate freely within the inner hole. The connecting flange 2-5-1 of the rotating shaft 2-5 is used for fixed connection with the folding wing 1. The V-bearing 2-5-2 of the rotating shaft 2-5 is embedded in the semi-U-shaped groove of the semi-U-shaped groove bracket 2-6, and the rotating shaft 2-5 is limited to slide within the semi-U-shaped groove bracket 2-6 by the V-bearing 2-5-2, thus realizing the rotation and sliding functions of the rotating shaft 2-5. The input end of the gear reducer 2-7 is connected to the servo motor 2-1, which is used to convert the rotation of the servo motor 2-1 into a parallel output and reduce it to a small torque at the output end. The output end is connected to the electromagnetic lock 2-8, and the position locking of the entire mechanism is achieved by utilizing the power-off self-locking function of the electromagnetic lock 2-8.

[0036] See Figure 5 The diagram shows the installation schematic of the folding mechanism and the fixed wing of the present invention. Two folding mechanisms 2 are evenly distributed on the bottom mounting plate 3-1 of the fixed wing 3 in a mirror image configuration. The semi-U-shaped sliding bracket 2-6 of the folding mechanism 2 is fixed to the bottom mounting plate 3-1 by multiple fasteners, such as four connecting screws 5-1. The linear slide rail 2-3 of the folding mechanism 2 is fixed to the bottom mounting plate 3-1 of the fixed wing 3 by multiple fasteners, such as four connecting screws 5-2, thus achieving a complete connection between the folding mechanism 2 and the fixed wing 3.

[0037] See Figure 6This diagram illustrates the connection between the folding mechanism and the folding wing of the present invention. The connecting flange 1-1 of the folding wing 1, the connecting flange 2-5-1 of the folding mechanism 2, the connecting bolt assembly 5-3, and the heat insulation pad 5-4 constitute the connection assembly between the folding mechanism 2 and the folding wing 1. After the rotating shaft 2-5 of the folding mechanism 2 passes through the support slider 2-4, the connecting flange 1-1 of the folding wing 1 and the connecting flange 2-5-1 of the folding mechanism 2 are fixed together by the connecting bolt assembly 5-3. A heat insulation pad 5-4, made of multi-layer ceramic fiber, is installed between the two flanges to ensure that the rotating shaft connecting flange 1-1 and the connecting flange 2-5-1 are not in direct contact, preventing external aerodynamic heat from the folding wing 1 from being transferred to the folding mechanism 2 along the mounting flange surface, thus avoiding damage to the folding mechanism 2 due to high temperatures. Simultaneously, the heat insulation pad 5-4 also provides some vibration damping and impact resistance, improving the connection reliability between the folding wing 1 and the rotating shaft 2-5. The other end of the rotating shaft 2-5 is a V-type bearing 2-5-2. The central axis of the V-type bearing 2-5-2 is defined as w, and the central axis of the connecting flange 2-5-1 is defined as y. The distance between the central axis w and the central axis y is defined as R.

[0038] See Figure 7 This diagram illustrates the trajectory of the V-shaped bearing during the unfolding of the folding wing of the present invention. The semi-U-shaped slide rail bracket 2-6 includes an arc-shaped segment and a straight segment. The arc-shaped segment is close to the folding wing 1, and the lowest point of the arc-shaped segment connects to the straight segment. The V-shaped bearing 2-5-2 of the rotating shaft 2-5 slides within the semi-U-shaped slide rail. When the V-shaped bearing 2-5-2 moves to position A, the highest point of the semi-U-shaped slide rail bracket 2-6, the folding wing 1 is at this position... Figure 1 (a) State: When the V-bearing 2-5-2 moves to the lowest point B of the arc segment of the semi-U-shaped groove, the folding wing 1 is in the middle position. Figure 1 In state (c), when the V-bearing 2-5-2 moves to position C, the end point of the straight section of the semi-U-shaped slide, the folding wing 1 is in the middle (c) state. Figure 1 In the middle (d) state, the vertical distance of the central axis of the V-type bearing 2-5-2 is also R when in positions A and B. The horizontal distance of the central axis of the V-type bearing 2-5-2 is also L when in positions B and C.

[0039] See Figure 8 The diagram shows the position of the locking mechanism of the present invention. The locking mechanism 4 consists of a pin hole seat 4-1 and a locking pin 4-2. The pin hole seat 4-1 is arranged on the mating surface 1-2 of the folding wing 1, and the locking pin 4-2 is arranged on the mating surface 3-2 of the fixed wing 3. The position locking between the folding wing 1 and the fixed wing 3 is achieved through the engagement of the pin holes of the pin hole seat 4-1 and the locking pin 4-2.

[0040] See Figure 9The diagram shows the structure of the pin hole seat of the present invention. The pin hole seat 4-1 includes a centering section I 4-1-1, a locking section I 4-1-2, and a contact switch 4-1-3. The length of the centering section I 4-1-1 is L1, and the length of the locking section I 4-1-2 is L2, ensuring that L1 + L2 = L. The centering section I 4-1-1 is a tapered hole, which uses the guiding effect of the tapered surface to adjust the position of the locking pin 4-2, so as to control the centerline distance between the pin hole seat 4-1 and the locking pin 4-2 within the design tolerance (generally less than 0.02) in the locking section I 4-1-2. The locking section I 4-1-2 is a circular slot with multiple holes such as eight teeth 4-1-2-1 distributed along the circular surface. The contact switch 4-1-3 is arranged at the deepest part of the pin hole in the pin hole seat 4-1, used to determine the locking status of the folding wing, and can provide real-time feedback of both locked and unlocked status signals.

[0041] See Figure 10 The diagram shows the structure of the locking pin of the present invention. The locking pin 4-2 includes a centering section II 4-2-1 and a locking section II 4-2-2. The length of the centering section II 4-2-1 is L1, and the length of the locking section II 4-2-2 is L2, ensuring that L1 + L2 = L. The centering section II 4-2-1 is a tapered protrusion, and its external dimensions match those of the centering section I 4-1-1. The locking section II 4-1-2 is a gear-like structure with multiple, such as eight, protruding teeth 4-2-2-1 distributed along its circular surface. The external dimensions of the locking section II 4-2-2 match those of the locking section I 4-1-2.

[0042] See Figure 11The diagram illustrates the centering and locking process of the locking mechanism of the present invention. Figure (e) shows the initial locking state, where the locking pin 4-2 contacts the tapered surface of the pin hole seat 4-1, indicating that the locking mechanism 4 has begun centering. Figure (f) shows the intermediate locking state, where the locking pin 4-2 contacts the toothed part and the toothed hole of the pin hole seat 4-1, indicating that the locking mechanism 4 has completed centering and begun locking. Figure (g) shows the fully locked state, where the locking pin 4-2 is fully inserted into the pin hole seat 4-1, and the precise fit between the toothed part 4-2-2-1 and the toothed hole 4-1-2-1 achieves the locking of the folding wing 1 in the Y and Z directions. The X-axis position locking of the folding wing 1 is achieved by the electromagnetic lock 2-8. Its operating mode is as follows: when the locking pin 4-2 is fully inserted into the pin hole seat 4-1, the tip of the locking pin 4-2 contacts the contact switch 4-1-3. At this time, the contact switch 4-1-3 feeds back the locking status signal to the control system. Upon receiving this signal, the control system disconnects the power supply to the electromagnetic lock 2-8. The electromagnetic lock 2-8 then completes the position locking of the folding mechanism through the locking gear reducer 2-7, thus locking the folding wing 1 in the X-axis. In summary, through the cooperation of the locking mechanism 4 and the electromagnetic lock 2-8, the position locking function of the folding wing 1 relative to the fixed wing 3 described in this invention is finally realized.

[0043] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.

[0044] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A translational-rotational folding and locking mechanism suitable for folding wings, characterized in that, It includes a folding mechanism (2) and a locking mechanism (4); The folding mechanism (2) is installed on the fixed wing (3) and drives the folding wing (1) to fold and unfold the folding wing (1) relative to the fixed wing (3); the locking mechanism (4) locks the relative positions of the folding wing (1) and the fixed wing (3). The folding mechanism (2) includes a servo motor (2-1), a telescopic rod (2-2), a linear slide rail (2-3), a support slider (2-4), a rotating shaft (2-5), a semi-U-shaped slide bracket (2-6), a gear reducer (2-7), and an electromagnetic lock (2-8). The servo motor (2-1) serves as the power source to drive the telescopic rod (2-2). The telescopic rod (2-2) is fixedly connected to the support slider (2-4). Under the drive of the servo motor (2-1), the support slider (2-4) moves back and forth in a straight line along the linear slide rail (2-3). The rotating shaft (2-5) has a light shaft (2-5-3) in the middle, a connecting flange (2-5-1) on one side, and a V-type bearing (2-5-2) on the other side. The light shaft (2-5-3) of the rotating shaft (2-5) passes through the support slider (2-5-3). 4) The inner hole can rotate freely in the inner hole of the support slider (2-4); the connecting flange (2-5-1) of the rotating shaft (2-5) is fixedly connected to the folding wing (1); the V-type bearing (2-5-2) of the rotating shaft (2-5) is embedded in the semi-U-shaped groove of the semi-U-shaped groove bracket (2-6), and the rotating shaft (2-5) is rotated and slid in the semi-U-shaped groove bracket (2-6) through the V-type bearing (2-5-2) to drive the folding wing (1) to unfold or fold; the input end of the gear reducer (2-7) is connected to the servo motor (2-1) to convert the rotation of the servo motor (2-1) into a parallel output, and the output end is connected to the electromagnetic lock (2-8) to implement the position locking of the entire mechanism by using the power-off self-locking function of the electromagnetic lock (2-8).

2. The translational-rotational folding and locking mechanism for folding wings according to claim 1, characterized in that, The folding mechanism (2) consists of two sets, which are evenly distributed on the bottom mounting plate (3-1) of the fixed wing (3) in a mirror image state.

3. The translational-rotational folding and locking mechanism for folding wings according to claim 1, characterized in that, The semi-U-shaped slide rail bracket (2-6) of the folding mechanism (2) is fixedly connected to the bottom mounting plate (3-1) by multiple fasteners, and the linear slide rail (2-3) of the folding mechanism (2) is fixedly connected to the bottom mounting plate (3-1) of the fixed wing (3) by multiple fasteners, thus completing the overall connection between the folding mechanism (2) and the fixed wing (3).

4. The translational-rotational folding and locking mechanism for folding wings according to claim 1, characterized in that, The folding wing (1) is provided with a rotating shaft connecting flange (1-1). The connecting flange (2-5-1) of the unfolding mechanism (2) is fixedly connected to the rotating shaft connecting flange (1-1). A heat insulation gasket (5-4) is installed between the two flanges so that the rotating shaft connecting flange (1-1) and the connecting flange (2-5-1) are in a non-direct contact state.

5. The translational-rotational folding and locking mechanism for folding wings according to claim 1, characterized in that, The semi-U-shaped slide bracket (2-6) includes an arc segment and a straight segment. The arc segment is close to the folding wing (1). The lowest point of the arc segment is connected to the straight segment. The V-type bearing (2-5-2) of the rotating shaft (2-5) slides within the semi-U-shaped slide. When the V-type bearing (2-5-2) slides to the highest point A of the arc segment, the folding wing is in a folded state. When the V-type bearing (2-5-2) slides to the lowest point B of the arc segment, the folding wing changes from a folded state to an unfolded state. The distance between the mating surface of the folding wing (1) and the mating surface of the fixed wing (3) is L, where L > 0. When the V-type bearing (2-5-2) moves to the end point C of the straight segment of the semi-U-shaped slide, the folding wing is in a locked state after unfolding. The distance between the mating surface of the folding wing (1) and the mating surface of the fixed wing (3) is 0.

6. The translational-rotational folding and locking mechanism for folding wings according to claim 5, characterized in that, When the V-type bearing (2-5-2) is located at the highest point A and the lowest point B of the arc segment, the vertical distance between the central axis of the V-type bearing (2-5-2) at the two positions is equal to the distance between the central axis of the V-type bearing (2-5-2) and the central axis of the connecting flange (2-5-1). When the V-bearing (2-5-2) is located at positions B and C at the two ends of the straight line, the horizontal distance between the central axes of the V-bearing (2-5-2) at the two positions is equal to the maximum distance between the docking surfaces of the folding wing (1) and the fixed wing (3) in the unfolded state of the folding wing.

7. The translational-rotational folding and locking mechanism for folding wings according to claim 5, characterized in that, The distance between the docking surface of the folding wing (1) and the docking surface of the fixed wing (3) is L, and the value of L ranges from 20mm to 150mm.

8. The translational-rotational folding and locking mechanism for folding wings according to claim 1, characterized in that, The locking mechanism (4) includes a pin hole seat (4-1) and a locking pin (4-2). The pin hole seat (4-1) is arranged on the mating wing surface (1-2) of the folding wing (1), and the locking pin (4-2) is arranged on the mating wing surface (3-2) of the fixed wing (3). The position of the folding wing (1) and the fixed wing (3) is locked by the pin hole of the pin hole seat (4-1) and the locking pin (4-2).

9. The translational-rotational folding and locking mechanism for folding wings according to claim 8, characterized in that, The pin seat (4-1) includes a centering section I (4-1-1), a locking section I (4-1-2), and a contact switch (4-1-3); the length of the centering section I (4-1-1) is L1, and the length of the locking section I (4-1-2) is L2, ensuring that L1+L2 = the maximum distance L between the mating surfaces of the folding wing (1) and the fixed wing (3) in the unfolded state; the centering section I (4-1-1) is a tapered hole, and the locking is adjusted by the guiding effect of the tapered surface. The position of the pin (4-2) ensures that the centerline distance between the pin hole seat (4-1) and the locking pin (4-2) in the locking section I (4-1-2) is controlled within the design tolerance; the locking section I (4-1-2) is a circular slot with multiple toothed holes (4-1-2-1) distributed along the circular surface; the contact switch (4-1-3) is arranged at the deepest part of the pin hole in the pin hole seat (4-1) to determine the locking status of the folding wing and to provide real-time feedback of the locked or unlocked status signals to the control system.

10. The translational-rotational folding and locking mechanism for folding wings according to claim 9, characterized in that, The locking pin (4-2) includes a centering section II (4-2-1) and a locking section II (4-2-2); the length of the centering section II (4-2-1) is L1, and the length of the locking section II (4-2-2) is L2, ensuring that L1+L2 = the maximum distance L between the docking surface of the folding wing (1) and the docking surface of the fixed wing (3) in the unfolded state of the folding wing; the centering section II (4-2-1) is a conical protrusion, and the external dimensions of the centering section II (4-2-1) match those of the centering section I (4-1-1); the locking section II (4-1-2) is a gear-shaped structure with multiple protruding teeth (4-2-2-1) distributed along the circular surface, and the external dimensions of the locking section II (4-2-2) match those of the locking section I (4-1-2).

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