A three-shaft full-motion wing tip driving and clutching mechanism

Abstract

The application belongs to the field of aviation technology, and particularly relates to a three-axis type full-motion wing tip driving and clutching mechanism. The mechanism comprises fixed wing ribs, wing edge ribs, wing tip root ribs and a driving assembly arranged in parallel. The application realizes the clutching of the wing edge ribs at a 10-degree position. When the wing tip root rib is less than 10 degrees, the wing edge rib moves synchronously with the wing tip root rib, the wing is in a flexible deformation stage, and there is no step difference between the wing ribs, so as to ensure the aerodynamic and stealth performance of the aircraft; when the wing tip root rib is more than 10 degrees, the wing edge rib is fixed at the 10-degree position, and the wing tip root rib can rotate independently. The function of completing the corresponding action at the specified angle is realized by the design of the cam, and no angle position feedback is needed, so that the mechanism has high reliability. In addition, the action of the whole full-motion wing tip only needs a single driving assembly, so that the complexity, cost, weight and occupied space of the system are reduced. In conclusion, the application has high application value.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of aviation technology, and particularly relates to a three-shaft type full-motion wing tip driving and clutching mechanism. BACKGROUND

[0002] To realize good steering performance, the full-motion wing tip of an aircraft needs to rotate in the range of 0-80 degrees. Due to the limitation of the deformation ability of the flexible skin near the wing rib, the rotation range of the wing rib is limited to 0-10 degrees. To ensure the aerodynamic and low detectability performance of the aircraft, the wing tip root rib and the wing rib need to move synchronously in the range of 0-10 degrees of the wing tip rotation to prevent step difference between the two; if the wing tip rotation angle exceeds 10 degrees, the wing rib needs to be locked, and the wing tip root rib needs to drive the full-motion wing tip to move independently in the range of 10-80 degrees.

[0003] Due to the limited space at the wing tip of the aircraft and the great influence of the mass at the wing tip on the aerodynamic performance of the whole wing, the requirements for the wing tip driving mechanism are high, and the existing wing tip driving mechanism still has the problems of a large number of driving devices and control systems and low reliability of the mechanism.

[0004] Therefore, it is desirable to have a technical solution to overcome or at least alleviate at least one of the aforementioned deficiencies of the prior art. SUMMARY

[0005] The purpose of the present application is to provide a three-shaft type full-motion wing tip driving and clutching mechanism to solve at least one problem existing in the prior art.

[0006] The technical solution of the present application is:

[0007] A three-shaft type full-motion wing tip driving and clutching mechanism, comprising:

[0008] The fixed wing rib, the wing rib and the wing tip root rib are arranged in parallel, wherein,

[0009] The fixed wing rib includes two, a first fixed wing rib and a second fixed wing rib, the two fixed wing ribs are connected through the rigid skin of the wing, a first bearing is installed on the first fixed wing rib, a second bearing is installed on the second fixed wing rib, and two square assembly holes are formed on the first fixed wing rib and the second fixed wing rib;

[0010] The wing rib and the second fixed wing rib are connected through the flexible skin of the wing, a third bearing is installed on the wing rib, and two circular assembly holes are formed on the wing rib;

[0011] A spline hole and a circular assembly hole are formed on the wing tip root rib;

[0012] A driving assembly comprises a large shaft, a driver, a wing tip root rib locking square shaft, a sliding groove cover, a wing tip root rib locking pin, and a wing edge rib locking pin shaft, wherein,

[0013] One end of the large shaft is fixedly connected with the output shaft of the driver through a spline, the middle part is sequentially matched with the first bearing, the second bearing, and the third bearing, and the other end is fixedly connected with the wing tip root rib through a spline and a nut. An axial cam is installed on the large shaft, and the axial cam is located between the two fixed wing ribs.

[0014] The wing tip root rib locking square shaft is inserted into the square assembly holes of the two fixed wing ribs. The end of the wing tip root rib locking square shaft is provided with a sliding groove cover, the sliding groove cover is provided with a circular arc sliding groove, and two driving cylinders matched with the axial cam are installed on the wing tip root rib locking square shaft.

[0015] One end of the wing tip root rib locking pin is installed in the circular arc sliding groove, and the other end is sequentially inserted into the circular assembly holes of the wing edge rib and the wing tip root rib.

[0016] The wing edge rib locking pin shaft comprises a square segment and a cylindrical segment. The square segment is inserted into the square assembly holes of the two fixed wing ribs, the cylindrical segment is inserted into the circular assembly hole of the wing edge rib, and two driving cylinders matched with the axial cam are installed on the square segment.

[0017] In at least one embodiment of the present application, the two fixed wing ribs are respectively fixedly connected with the wing rigid skin through bolts to form a wing fixed wing box.

[0018] In at least one embodiment of the present application, the second fixed wing rib is fixedly connected with the wing flexible skin through bolts, and the wing edge rib is fixedly connected with the wing flexible skin through bolts.

[0019] In at least one embodiment of the present application, a wing tip edge rib is further included, and the wing tip edge rib is connected with the wing tip root rib through a wing tip rigid skin.

[0020] In at least one embodiment of the present application, the wing tip edge rib and the wing tip root rib are respectively fixedly connected with the wing tip rigid skin through bolts to form a full-motion wing tip.

[0021] In at least one embodiment of the present application, the wing tip root rib locking square shaft and the sliding groove cover are integrally formed through welding.

[0022] In at least one embodiment of the present application, the center of the circular arc sliding groove of the sliding groove cover coincides with the axis of the large shaft.

[0023] The present application has at least the following technical effects:

[0024] The triaxial full-motion wing tip driving and clutching mechanism of the present application can realize synchronous and asynchronous rotation of the wing tip root rib and the wing edge rib, reduces the number of driving devices and control systems, and improves the reliability of the mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a schematic diagram of the triaxial full-motion wing tip driving and clutching mechanism of one embodiment of the present application;

[0026] Figure 2 is a schematic diagram of the driving assembly of one embodiment of the present application;

[0027] Figure 3 is a schematic diagram of the fixed wing rib of one embodiment of the present application;

[0028] Figure 4 is a schematic diagram of the wing edge rib of one embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the wing tip root rib of one embodiment of the present application;

[0030] Figure 6 is a schematic diagram of the wing tip edge rib of one embodiment of the present application;

[0031] Figure 7 is a schematic diagram of the large shaft of one embodiment of the present application;

[0032] Figure 8 is a front view of the wing tip root rib locking square shaft of one embodiment of the present application;

[0033] Figure 9 is a side view of the wing tip root rib locking square shaft of one embodiment of the present application;

[0034] Figure 10 is a front view of the sliding groove cover of one embodiment of the present application;

[0035] Figure 11 is a side view of the sliding groove cover of one embodiment of the present application;

[0036] Figure 12 is a front view of the wing tip root rib locking pin of one embodiment of the present application;

[0037] Figure 13 is a side view of the wing tip root rib locking pin of one embodiment of the present application;

[0038] Figure 14 is a front view of the wing edge rib locking pin shaft of one embodiment of the present application;

[0039] Figure 15is a wing rib lock pin shaft side view of an embodiment of the present application;

[0040] Figure 16 is a schematic diagram of a full-movable wing tip in a horizontal state of an embodiment of the present application;

[0041] Figure 17 is a schematic diagram of a three-axle full-movable wing tip driving and clutching mechanism when the full-movable wing tip is in a horizontal state of an embodiment of the present application;

[0042] Figure 18 is a schematic diagram of a full-movable wing tip rotating to a 10° position of an embodiment of the present application;

[0043] Figure 19 is a schematic diagram of a three-axle full-movable wing tip driving and clutching mechanism when the full-movable wing tip rotates to a 10° position of an embodiment of the present application;

[0044] Figure 20 is a schematic diagram of a full-movable wing tip deflecting to a limit state of an embodiment of the present application;

[0045] Figure 21 is a schematic diagram of a three-axle full-movable wing tip driving and clutching mechanism when the full-movable wing tip deflects to a limit state of an embodiment of the present application.

[0046] wherein:

[0047] 1 - fixed wing rib; 2 - wing rib; 3 - wing tip root rib; 4 - wing tip rib; 5 - wing rigid skin; 6 - wing flexible skin; 7 - wing tip rigid skin; 8 - large shaft; 9 - driver; 10 - wing tip root rib lock square shaft; 11 - sliding groove cover; 12 - wing tip root rib lock pin; 13 - wing rib lock pin shaft; 14 - axial cam; 15 - driving cylinder. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the embodiments of the present application will be described in more detail below in combination with the drawings of the embodiments of the present application. In the drawings, the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout. The described embodiments are some of the embodiments of the present application, not all the embodiments. The embodiments described below by reference to the drawings are exemplary, and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below in combination with the drawings.

[0049] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "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 this application 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 limiting the scope of protection of this application.

[0050] The following is in conjunction with the appendix Figures 1 to 21 This application will be described in further detail.

[0051] This application provides a three-axis all-moving wingtip drive and clutch mechanism, including: a fixed wing rib 1, a wing edge rib 2, a wingtip root rib 3 arranged in parallel, and a drive assembly.

[0052] Specifically, such as Figure 1 As shown, the fixed wing rib 1 includes two parts: a first fixed wing rib and a second fixed wing rib. The two fixed wing ribs 1 are connected by the rigid wing skin 5, and the two fixed wing ribs 1 are respectively fixedly connected to the rigid wing skin 5 by bolts to form a fixed wing box. Figure 3 As shown, a circular mounting hole is provided in the middle of the first fixed wing rib and the second fixed wing rib, and two square assembly holes are provided on both sides of the circular mounting hole. A first bearing is installed in the circular mounting hole of the first fixed wing rib, and a second bearing is installed in the circular mounting hole of the second fixed wing rib. The square assembly holes are used for assembling the wingtip root rib locking square shaft 10 and the wing side rib locking pin shaft 13.

[0053] The wing edge rib 2 and the second fixed wing rib are connected by the wing flexible skin 6. The second fixed wing rib and the wing flexible skin 6 are fixedly connected by bolts, and the wing edge rib 2 and the wing flexible skin 6 are also fixedly connected by bolts. Figure 4 As shown, a circular mounting hole is provided in the middle of the wing side rib 2, and two circular assembly holes are provided on both sides of the circular mounting hole. A third bearing is installed on the circular mounting hole of the wing side rib 2. The circular assembly holes are used for assembling the wingtip root rib locking square shaft 10 and the wing side rib locking pin shaft 13.

[0054] like Figure 5 As shown, the wingtip root rib 3 has splined holes and circular mounting holes. In this embodiment, it also includes a wingtip side rib 4, as shown... Figure 6 As shown, the wingtip edge rib 4 and the wingtip root rib 3 are connected by the wingtip rigid skin 7. The wingtip edge rib 4 and the wingtip root rib 3 are respectively fixedly connected to the wingtip rigid skin 7 by bolts to form an all-moving wingtip.

[0055] like Figure 2As shown, the driving assembly includes a large shaft 8, a driver 9, a wing tip root rib locking square shaft 10, a sliding groove cover 11, a wing tip root rib locking pin 12, and a wing edge rib locking pin shaft 13. Among them, as shown Figure 7 As shown, one end of the large shaft 8 is fixedly connected with the output shaft of the driver 9 through the spline, the middle part is matched with the first bearing, the second bearing and the third bearing in sequence, and the other end is fixedly connected with the wing tip root rib 3 through the spline and the nut. An axial cam 14 is installed on the large shaft 8, and the axial cam 14 is located between the two fixed wing ribs 1.

[0056] As shown Figures 8-9 , the wing tip root rib locking square shaft 10 is inserted into the square assembly holes on the same side of the two fixed wing ribs 1, and the end of the wing tip root rib locking square shaft 10 is provided with a sliding groove cover 11 (see Figures 10-11 ). The wing tip root rib locking square shaft 10 is integrated with the sliding groove cover 11 through welding, the sliding groove cover 11 is provided with an arc sliding groove, the center of the arc sliding groove of the sliding groove cover 11 coincides with the axis of the large shaft 8, and two driving cylinders 15 cooperating with the axial cam 14 are installed on the wing tip root rib locking square shaft 10.

[0057] As shown Figures 12-13 , one end of the wing tip root rib locking pin 12 is installed in the arc sliding groove, and the other end is inserted into the circular assembly hole of the wing edge rib 2 and the wing tip root rib 3 in sequence. As shown Figures 14-15 , the wing edge rib locking pin shaft 13 includes a square section and a cylindrical section, the square section is inserted into the square assembly holes on the same side of the two fixed wing ribs 1, the cylindrical section is inserted into the circular assembly hole of the wing edge rib 2, and two driving cylinders 15 cooperating with the axial cam 14 are installed on the square section.

[0058] The three-axis type full-movement wing tip driving and clutching mechanism of the present application has the following motion principle:

[0059] a) As shown Figures 16-17 , when the wing tip is not deflected (the rotation angle is 0°), the wing tip root rib locking pin 12 passes through the wing edge rib 2 and is inserted into the locking pin hole (circular assembly hole) of the wing tip root rib 3, and the wing edge rib 2 and the wing tip root rib 3 are fixedly connected together. When the large shaft 8 drives the wing tip root rib 3 to rotate and the rotation angle does not exceed 10°, the wing edge rib 2 also moves synchronously, the flexible skin 6 of the wing deforms, and there is no step difference between the wing ribs;

[0060] b) As shown Figures 18-19 , when the rotation angle reaches 10°, the wing tip root rib locking pin 12 is about to be separated from the wing tip root rib 3, the right end cylindrical section of the wing edge rib locking pin shaft 13 is just aligned with the corresponding locking pin hole (circular assembly hole) on the wing edge rib 2 and begins to be inserted into the hole, locking the wing edge rib 2 at the position of 10° rotation angle;

[0061] c) As shown Figures 20-21 , when the rotation angle exceeds 10°, the wing tip root rib locking pin 12 is separated from the wing tip root rib 3, and the right end cylindrical section of the wing edge rib locking pin shaft 13 is inserted into the corresponding locking pin hole (circular assembly hole) on the wing edge rib 2, and the wing edge rib 2 is locked at the position of 10° rotation angle.As shown, after the wing tip angle exceeds 10°, the large shaft 8 only drives the wing tip root rib 3 to move alone, the wing edge rib 2 is locked at the position of 10° angle, until the wing tip reaches the maximum rotation angle (80° state).

[0062] The wing tip return process is the reverse process of the above process.

[0063] The three-axis movable wing tip drive and clutch mechanism of the present application, two fixed wing ribs 1 and the wing rigid skin 5 are bolted to form a wing fixed wing box; the left and right sides of the wing flexible skin 6 are bolted to the fixed wing rib 1, and the right side of the wing flexible skin 6 is bolted to the wing edge rib 2. The skin has a certain deformation capacity, allowing the wing edge rib 2 to rotate 10° around the large shaft while the right fixed wing rib 1 is stationary; the wing tip root rib 3, the wing tip edge rib 4 and the wing tip rigid skin 7 are bolted to form a movable wing tip. The output shaft of the driver 9 is fixedly connected with the large shaft 8 through the spline, the two fixed wing ribs 1 are sleeved on the large shaft 8 through the bearing, the wing tip root rib 3 is fixedly connected with the large shaft 8 through the spline and the nut, so that the driver 9 can drive the wing tip root rib 3 to rotate relative to the wing fixed wing box through the large shaft 8, realizing the rotation of the movable wing tip in the range of 0°-80°. The wing tip edge rib 4 is sleeved on the large shaft 8 through the bearing, and can rotate relative to the large shaft 8.

[0064] The three-axis full-motion wing tip driving and clutching mechanism of the present application, the square hole between the left side of the wing tip root rib locking square shaft 10 and the two fixed wing ribs 1 is matched and designed with two driving cylinders 15, which can move linearly along the axis of the large shaft 8 under the drive of the axial cam 14 of the large shaft 8. The left end shaft shoulder of the wing tip root rib locking pin 12 is installed in the circular arc sliding groove in the sliding groove cover 11, and then the sliding groove cover 11 and the right end of the wing tip root rib locking square shaft 10 are welded as a whole. The center of the sliding groove arc is coincided with the axis of the large shaft 8, which ensures that the wing tip root rib locking square shaft 10 can drive the wing tip root rib locking pin 12 to move linearly without affecting the rotation of the wing tip root rib 3 around the axis of the large shaft 8. The left side of the wing rib locking pin shaft 13 is also matched with the two fixed wing ribs 1 as a square hole and designed with two driving cylinders 15, which can move linearly along the axis of the large shaft 8 under the drive of the axial cam 14 of the large shaft 8. When the wing tip angle is not more than 10°, the wing tip root rib locking pin 12 penetrates the wing rib 2 and inserts into the locking pin hole of the wing tip root rib 3, and the wing rib 2 and the wing tip root rib 3 are fixed together; when the large shaft 8 rotates the wing tip root rib 3, the wing rib 2 will also rotate synchronously, and the wing is in a flexible deformation stage, and there is no step difference between the wing ribs, thereby ensuring the aerodynamic and stealth performance of the aircraft. In the process of gradually increasing the wing tip angle, the wing tip root rib locking pin 12 gradually moves away from the wing tip root rib 3 under the drive of the axial cam 14 of the large shaft, and through the design of the cam curve, when the rotation angle reaches 10°, the wing tip root rib locking pin 12 just separates from the wing tip root rib 3, and the wing rib 2 and the wing tip root rib 3 are disconnected. In the process of the wing tip root rib locking pin 12 gradually separating from the wing tip root rib 3, the wing rib locking pin shaft 13 moves towards the wing rib 2 under the drive of the axial cam 14 of the large shaft 8, and when the wing tip root rib locking pin 12 is about to separate from the wing tip root rib 3, the cylindrical section at the right end of the wing rib locking pin shaft 13 is just aligned with and begins to insert into the corresponding locking pin hole on the wing rib 2, locking the wing rib 2 at an angle of 10°. After the wing tip angle exceeds 10°, the large shaft 8 can drive the full-motion wing tip to continue to rotate through the wing tip root rib 3, and the maximum rotation angle can reach 80°. Thereafter, when the wing tip reverses rotation and the angle returns to 10°, the wing rib locking pin shaft 13 is about to separate from the wing rib 2, the wing tip root rib locking pin 12 inserts into the locking pin hole of the wing tip root rib 3 again, and the wing tip root rib 3 and the wing rib 2 are fixed again. The driving assembly can continue to reverse rotation through the wing tip root rib 3, until it returns to 0°, at which time the deformation of the wing flexible skin 6 is also completely restored.

[0065] The triaxial full-motion wing tip driving and clutching mechanism of the application can meet the requirements of the full-motion wing tip based on aerodynamics, stealth and maneuvering performance, and under the action of a single driving assembly, the wing rib 2 moves with the wing tip rib 3 in the range of 0°-10°, and when the angle of the wing tip rib 3 exceeds 10°, the wing rib 2 is locked, and the wing tip rib 3 can drive the full-motion wing tip to move independently in the range of 10°-80°.

[0066] The triaxial full-motion wing tip driving and clutching mechanism of the application realizes the clutching of the wing rib 2 at the position of 10°. When the angle of the wing tip rib 3 is less than 10°, the wing rib 1 moves synchronously with the wing tip rib 3, the wing is in the flexible deformation stage, and there is no step difference between the wing ribs, thereby ensuring the aerodynamic and stealth performance of the aircraft; when the angle of the wing tip rib 3 exceeds 10°, the wing rib 2 is fixed at the position of 10°, and the wing tip rib 3 can rotate independently. The function of completing the corresponding action at the specified angle is realized by the design of the cam, and there is no need for angle position feedback, and the mechanism has high reliability. In addition, the action of the entire full-motion wing tip only needs a single driving assembly, thereby reducing the complexity, cost, weight and occupied space of the system. In summary, the application has high application value.

[0067] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A three-axis omni-directional wing tip drive and clutch mechanism, characterized by, The utility model relates to a kind of wing structure, including: Parallelly arranged fixed wing rib (1), wing edge rib (2) and wing tip root rib (3), wherein, The fixed wing rib (1) includes two, first fixed wing rib and second fixed wing rib, two the fixed wing rib (1) is connected by wing rigid skin (5), first bearing is installed on the first fixed wing rib, second bearing is installed on the second fixed wing rib, and two square assembly holes are formed on the first fixed wing rib and the second fixed wing rib; The wing edge rib (2) is connected between the second fixed wing rib by wing flexible skin (6), third bearing is installed on the wing edge rib (2), and two circular assembly holes are formed on the wing edge rib (2); The wing tip root rib (3) is provided with spline hole and circular assembly hole; Drive assembly, the drive assembly includes large shaft (8), driver (9), wing tip root rib locking square shaft (10), sliding groove cover (11), wing tip root rib locking pin (12), wing edge rib locking pin shaft (13), wherein, One end of the large shaft (8) is fixedly connected with the output shaft of the driver (9) by spline, the middle part is matched with the first bearing, the second bearing, the third bearing in sequence, the other end is fixedly connected with the wing tip root rib (3) by spline and nut, the large shaft (8) is provided with axial cam (14), the axial cam (14) is located between two the fixed wing rib (1) position; The wing tip root rib locking square shaft (10) is inserted into the square assembly hole of two the fixed wing rib (1), the end of the wing tip root rib locking square shaft (10) is provided with sliding groove cover (11), the sliding groove cover (11) is provided with circular arc sliding groove, the wing tip root rib locking square shaft (10) is provided with two drive cylinders (15) matched with the axial cam (14); One end of the wing tip root rib locking pin (12) is installed in the circular arc sliding groove, and the other end is inserted into the circular assembly hole of the wing edge rib (2) and the wing tip root rib (3) in sequence; The wing edge rib locking pin shaft (13) includes square section and cylindrical section, the square section is inserted into the square assembly hole of two the fixed wing rib (1), the cylindrical section is inserted into the circular assembly hole of the wing edge rib (2), and the square section is provided with two drive cylinders (15) matched with the axial cam (14).

2. The tri-axial omni-directional tip drive and clutch mechanism of claim 1, wherein, Two the fixed wing rib (1) is fixedly connected by bolt to form wing fixed wing box with the wing rigid skin (5).

3. The tri-axial omni-directional tip drive and clutch mechanism of claim 2, wherein, The second fixed wing rib is fixedly connected by bolt with the wing flexible skin (6), and the wing edge rib (2) is fixedly connected by bolt with the wing flexible skin (6).

4. The tri-axial omni-directional tip drive and clutch mechanism of claim 3, wherein, It also includes wing tip edge rib (4), and the wing tip edge rib (4) is connected with the wing tip root rib (3) by wing tip rigid skin (7).

5. The tri-axial omni-directional tip drive and clutch mechanism of claim 4, wherein, The wing tip edge rib (4) and the wing tip root rib (3) are fixedly connected by bolt with the wing tip rigid skin (7) to form full-motion wing tip.

6. The tri-axial omni-directional tip drive and clutch mechanism of claim 1, wherein, The wing tip root rib locking square shaft (10) and the sliding groove cover (11) are integrally connected by welding.

7. The tri-axial omni-directional tip drive and clutch mechanism of claim 6, wherein, The center of the circular arc chute of the chute cover (11) coincides with the axis of the large shaft (8).

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