Variable camber wing leading edge mechanism based on knuckle structure

Abstract

The utility model relates to a variable-camber wing leading edge mechanism based on a knuckle structure. The variable-camber wing leading edge mechanism comprises a wing middle support, a deformation framework, a driving assembly and a variable-camber skin, the driving assembly is arranged in the wing middle support; the deformation framework is arranged at the front end of the wing middle support and is connected with the driving assembly; the variable camber skin is arranged on the outer surfaces of the wing middle support and the deformation framework. Symmetrical design is adopted, the symmetrical faces of the connecting rods and the driving assemblies are the same, due to the fact that the partially-overlapped skin exists, the front edge can be bent by a larger amplitude, and a new thought is provided for structural design of the variable-camber wing.

Description

TECHNICAL FIELD

[0001] The utility model relates to variable camber wing technical field especially relates to a variable camber wing leading edge mechanism based on knuckle structure. BACKGROUND

[0002] In the design of traditional aircraft, the camber of the wing leading edge is usually fixed. Although this design is simple, it does have limitations. At different flight stages (such as low speed, cruising, acceleration, climbing, etc.), a fixed wing leading edge may not provide optimal performance, especially at supersonic or high speed flight, a fixed design may result in insufficient lift or increased drag.

[0003] To solve such problems, some aerospace engineers have proposed the concept of "variable geometry wings", which dynamically adjust the geometry of the wing according to the flight state to maintain optimal aerodynamic performance. Among them, "leading edge variable camber wing" is an advanced technology that improves flight performance by adjusting the curvature of the leading edge, especially in terms of lift and airflow control. The adjustment of the leading edge camber can be achieved by driving the deformation elements on the surface of the wing through hydraulic, pneumatic or electric devices, thereby optimizing the transition state of the airflow.

[0004] However, the existing leading edge variable camber wing has some defects that cannot be ignored, such as the deformation of the wing leading edge, which is achieved by stretching or shrinking the skin material. Repeated stretching and shrinking of the skin can cause material fatigue. SUMMARY

[0005] In view of the above problems, the utility model aims to provide a variable camber wing leading edge mechanism based on knuckle structure, which can meet the cleaning needs of electronic components and make it more convenient to take and place electronic components.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] The variable camber wing leading edge mechanism based on knuckle structure comprises a wing middle support, a deformation skeleton, a driving assembly and a variable camber skin. The driving assembly is arranged inside the wing middle support. The deformation skeleton is arranged at the front end of the wing middle support and connected with the driving assembly. The variable camber skin is arranged on the outer surface of the wing middle support and the deformation skeleton.

[0008] Further, the deformation skeleton is composed of three knuckles. The first knuckle is fixedly connected at the front end of the wing middle support, and the upper end of the first knuckle is rotatably connected with the driving assembly. The second knuckle is rotatably connected at the front end of the first knuckle. The third knuckle is fixedly connected at the front end of the second knuckle.

[0009] Further, the first finger joint comprises connecting rod I, connecting rod II, connecting rod III, horizontal rod I and arc-shaped connecting rod; the second finger joint comprises L-shaped connecting rod, connecting rod IV, horizontal rod II and inclined rod; the third finger joint comprises D-shaped connecting rod and horizontal rod III; the connecting rod I is horizontally fixed at the left and right sides of the bottom of the front end of the wing middle support respectively; the connecting rod II is arranged on the inner side of the connecting rod I respectively, the lower end of the connecting rod II on the two sides is rotatably connected with the rear end of the connecting rod I on the corresponding side respectively, and the upper end of the connecting rod II on the two sides is rotatably connected with the driving assembly respectively; the connecting rod III is arranged above the connecting rod I respectively, and the rear end of the connecting rod III on the two sides is rotatably connected with the upper end of the connecting rod II on the corresponding side respectively; the L-shaped connecting rod is arranged at the front end of the connecting rod I respectively, and the upper end of the L-shaped connecting rod on the two sides is rotatably connected with the front end of the connecting rod III on the corresponding side respectively; the bending part of the L-shaped connecting rod on the two sides is rotatably connected with the front end of the connecting rod I on the corresponding side respectively; the D-shaped connecting rod is arranged at the front end of the L-shaped connecting rod respectively; the bottom front end of the L-shaped connecting rod on the two sides is fixedly connected with the rear bottom end of the D-shaped connecting rod on the corresponding side respectively; the top end of the L-shaped connecting rod on the two sides is fixedly connected with the top end of the D-shaped connecting rod on the corresponding side through the connecting rod IV; the horizontal rod I is fixedly connected between the rear ends of the connecting rod I on the two sides; the horizontal rod II is fixedly connected between the front ends of the connecting rod I on the two sides; the arc-shaped connecting rod is arranged on the upper part of the front end of the wing middle support; the arc-shaped connecting rod is fixedly connected between the front side of the arc-shaped connecting rod and the horizontal rod II through the inclined rod; and the rear end of the arc-shaped connecting rod is fixedly connected with the wing middle support.

[0010] Further, the variable camber skin comprises upper variable camber skin assembly and lower variable camber skin assembly; the upper variable camber skin assembly covers the upper surface of the wing middle support and the deformation framework; and the lower variable camber skin assembly covers the lower surface of the wing middle support and the deformation framework.

[0011] Further, the upper variable camber skin assembly comprises leading edge upper variable camber skin, boss and main upper variable camber skin; the main upper variable camber skin is fixed on the rear side of the upper surface of the wing middle support; the left and right sides of the upper surface of the wing middle support are respectively provided with sliding groove; the leading edge upper variable camber skin covers the upper surface of the wing middle support and the deformation framework; the boss is fixedly connected at the front side bottom of the leading edge upper variable camber skin respectively; the front side of the leading edge upper variable camber skin is slidingly connected with the corresponding two sliding grooves through the boss, and in the initial state, the leading edge upper variable camber skin partially overlaps with the main upper variable camber skin.

[0012] Further, the lower variable camber skin assembly comprises an omega spring and a lower variable camber skin, the lower variable camber skin covers the lower surface of the wing middle support and the deformation skeleton, the lower end surface of the connecting rod I is provided with a circular groove in the middle, the omega spring is arranged in the circular groove respectively, the bottom of the omega spring is fixedly connected with the inner surface of the lower variable camber skin respectively, and the part of the lower variable camber skin below the open end of the omega spring is provided with a bevel cut.

[0013] Further, the driving assembly comprises a sleeve, a driving connecting rod, a gear, a rack, a motor and a shaft, the motor is fixedly connected to the inner bottom of the wing middle support, the shaft is transversely connected to the output end of the motor, the gear is fixedly connected to the two ends of the shaft, the rack is arranged on the two sides of the motor and is slidingly connected with the bottom of the wing middle support, the two racks are engaged with the corresponding gears respectively, the sliding rod is arranged on the outer side of the rack in parallel and is fixedly connected with the bottom of the wing middle support, the sleeve is fixedly connected to the outer side of the rear end of the rack and is slidingly connected with the sliding rod, the driving connecting rod is arranged above the rack, and the two ends of the driving connecting rod are rotatably connected with the corresponding sleeve and the connecting rod II.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The design of the overlapping skin can increase the variable bending amplitude, and can also avoid repeatedly stretching or shrinking the skin material, prolonging the service life of the material.

[0016] 2. The front edge deformation assembly realizes variable bending through the connecting rod structure, and good coordination can be maintained.

[0017] 3. The overlapping skin and the gear and rack transmission can effectively ensure continuous smooth variable bending. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is a structure schematic view of the driving assembly;

[0020] Figure 3 It is a structure schematic view of the upper variable camber skin assembly;

[0021] Figure 4 It is a structure schematic view of the lower variable camber skin assembly in the initial state;

[0022] Figure 5 It is a structure schematic view of the lower variable camber skin assembly in the drooping state;

[0023] Figure 6 It is a structure schematic view of the utility model in the initial state;

[0024] Figure 7 The structure of the sagging state is a schematic diagram.

[0025] Wherein, the reference numerals: 1, connecting rod I; 2, connecting rod II; 3, connecting rod III; 4, L-shaped connecting rod; 5, connecting rod IV; 6, D-shaped connecting rod; 7, crossbar I; 8, crossbar II; 9, inclined rod; 10, crossbar III; 11, arc-shaped connecting rod; 12, boss; 13, sleeve; 14, driving connecting rod; 15, slide rod; 16, gear; 17, rack; 18, motor; 19, shaft; 20, omega spring; 21, wing middle support; 22, sliding groove; 23a, front edge upper variable camber skin; 23, main upper variable camber skin; 24, lower variable camber skin. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] It should be noted that in the description of the present application, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not mean that the device or element must have a particular orientation, be constructed and operated in a particular orientation.

[0028] As shown in Figures 1-7 The variable camber wing leading edge mechanism based on the knuckle structure comprises a wing middle support 21, a deformation framework, a driving assembly and a variable camber skin, the driving assembly is arranged inside the wing middle support 21, the deformation framework is arranged at the front end of the wing middle support 21 and connected with the driving assembly, the driving assembly controls the deformation framework to complete deformation, and the variable camber skin is arranged on the outer surfaces of the wing middle support 21 and the deformation framework to meet the skin requirement in deformation.

[0029] In the embodiment, the deformation framework is composed of three knuckles from back to front, wherein the first knuckle is fixedly connected at the front end of the wing middle support 21, and the upper end of the first knuckle is rotatably connected with the driving assembly; the second knuckle is rotatably connected at the front end of the first knuckle; and the third knuckle is fixedly connected at the front end of the second knuckle.

[0030] The first finger joint comprises connecting rods I1, I2, I3, a horizontal rod I7 and an arc-shaped connecting rod 11; the second finger joint comprises L-shaped connecting rods 4, a connecting rod IV 5, a horizontal rod II 8 and an inclined rod 9; the third finger joint comprises D-shaped connecting rods 6 and a horizontal rod III 10.

[0031] Specifically, the connecting rods I1 are horizontally and symmetrically fixed to the left and right sides of the bottom of the front end of the wing middle support 21; the connecting rods I2 are vertically arranged on the inner sides of the two connecting rods I1 and are symmetric to each other, the lower ends of the two connecting rods I2 are rotatably connected to the rear ends of the corresponding connecting rods I1, and the upper ends of the two connecting rods I2 are rotatably connected to the output ends of the driving assemblies; the connecting rods I3 are arranged above the two connecting rods I1 and are symmetric to each other, the rear ends of the two connecting rods I3 are rotatably connected to the upper ends of the corresponding connecting rods I2; the L-shaped connecting rods 4 are arranged at the front ends of the two connecting rods I1 and are symmetric to each other, the upper ends of the two L-shaped connecting rods 4 are rotatably connected to the front ends of the corresponding connecting rods I3, and the bent portions of the two L-shaped connecting rods 4 are rotatably connected to the front ends of the corresponding connecting rods I1; the D-shaped connecting rods 6 are arranged at the front ends of the two L-shaped connecting rods 4; the bottom front ends of the two L-shaped connecting rods 4 are fixedly connected to the rear bottom ends of the corresponding D-shaped connecting rods 6; the top ends of the two L-shaped connecting rods 4 are fixedly connected to the top ends of the corresponding D-shaped connecting rods 6 through the connecting rod IV 5; the horizontal rod I7 is fixedly connected between the rear ends of the two connecting rods I1; the lower ends of the connecting rods I2 are rotatably connected to the horizontal rod I7; the horizontal rod II 8 is fixedly connected between the front ends of the two connecting rods I1; the bent portions of the two L-shaped connecting rods 4 are rotatably connected to the horizontal rod II 8; the arc-shaped connecting rods 11 are uniformly arranged on the upper portion of the front end of the wing middle support 21; the front sides of the arc-shaped connecting rods 11 and the horizontal rod II 8 are fixedly connected through the inclined rod 9; the rear ends of the arc-shaped connecting rods 11 are fixedly connected to the wing middle support 21.

[0032] The variable camber skin comprises an upper variable camber skin assembly and a lower variable camber skin assembly; the upper variable camber skin assembly covers the upper surfaces of the wing middle support 21 and the morphing framework; the lower variable camber skin assembly covers the lower surfaces of the wing middle support 21 and the morphing framework.

[0033] Specifically, the upper variable camber skin assembly comprises a leading edge upper variable camber skin 23a, a boss 12 and a main upper variable camber skin 23; the main upper variable camber skin 23 is fixedly covered on the upper surface of the rear side of the wing middle support 21; the upper surface of the wing middle support 21 is respectively provided with a sliding groove 22 on the left and right sides; the leading edge upper variable camber skin 23a is covered on the upper surface of the wing middle support 21 and the deformation framework, and is extended from the upper surface of the D-shaped connecting rod 6 to cover the upper surface of the wing middle support 21; the boss 12 is respectively fixedly connected on the front bottom of the leading edge upper variable camber skin 23a; the front bottom of the leading edge upper variable camber skin 23a is respectively slidably connected with the corresponding two sides of the sliding groove 22 through the boss 12, and in the initial state, the front side area of the leading edge upper variable camber skin 23a overlaps with the main upper variable camber skin 23 by a part.

[0034] When the deformation framework is deformed, the leading edge upper variable camber skin 23a can be driven to slide in the sliding groove 22 through the boss 12.

[0035] The driving assembly drives the connecting rod II 2 to rotate, the connecting rod II 2 drives the connecting rod III 3 to rotate, the connecting rod III 3 drives the L-shaped connecting rod 4 to rotate, the L-shaped connecting rod 4 drives the second and third knuckles to rotate, and finally realizes the downward deflection of the wing; when the downward deflection reaches the maximum angle, the leading edge upper variable camber skin 23a is almost completely attached to the arc-shaped connecting rod 11.

[0036] The lower variable camber skin assembly comprises an Ω spring 20 and a lower variable camber skin 24; the lower variable camber skin 24 is covered on the lower surface of the wing middle support 21 and the deformation framework, and is extended from the lower surface of the D-shaped connecting rod 6 to cover the lower surface of the wing middle support 21; the lower end surface of the connecting rod I 1 is provided with a circular groove in the middle; the Ω spring 20 is respectively arranged in the circular groove; the bottom of the Ω spring 20 is respectively fixedly connected with the inner surface of the lower variable camber skin 24; the part of the lower variable camber skin 24 below the opening end of the Ω spring 20 is provided with a bevel, and when the deformation framework is deformed, the fixed two ends of the Ω spring 20 and the lower variable camber skin 24 can slide relative to each other along the bevel.

[0037] The driving assembly comprises a sleeve 13, a driving connecting rod 14, a sliding rod 15, a gear 16, a rack 17, a motor 18 and a shaft 19; the motor 18 is fixedly connected to the inner bottom of the middle wing support 21; the shaft 19 is transversely connected to the output end of the motor 18; the gear 16 is fixedly connected to the two ends of the shaft 19; the rack 17 is arranged on the two sides of the motor 18 and is in sliding connection with the bottom of the middle wing support 21; the two racks 17 are in engagement with the corresponding gears 16; the sliding rods 15 are arranged in parallel on the outer sides of the two racks 17 and are fixedly connected to the bottom of the middle wing support 21; the sleeves 13 are fixedly connected to the outer sides of the rear ends of the racks 18 and are in sliding connection with the corresponding sliding rods 15; the driving connecting rods 14 are arranged above the two racks 17; and the two ends of the driving connecting rod 14 are in rotary connection with the corresponding sleeve 13 and the connecting rod II 2. The motor 18 rotates to drive the shaft 19 to rotate, thereby driving the gear 16 to rotate, further driving the rack 17 to slide on the middle wing support 21, further driving the sleeve 13 to slide on the sliding rod 15, thereby driving the driving connecting rod 14 to move, finally controlling the deformation of the deformation framework, and realizing the downward deflection of the leading edge of the wing.

[0038] The details of the present application are well known.

[0039] The above-described embodiments are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A variable camber wing leading edge mechanism based on knuckle structure, characterized by: The mechanism comprises a wing middle support, a deformation skeleton, a driving assembly and a variable camber skin; the driving assembly is arranged inside the wing middle support; the deformation skeleton is arranged at the front end of the wing middle support and connected with the driving assembly; and the variable camber skin is arranged on the outer surface of the wing middle support and the deformation skeleton.

2. A variable camber wing leading edge mechanism based on knuckle structure according to claim 1, characterized in that: The deformation skeleton is composed of three fingers, wherein the first finger is fixed at the front end of the wing middle support and the upper end of the first finger is rotatably connected with the driving assembly; the second finger is rotatably connected at the front end of the first finger; and the third finger is fixed at the front end of the second finger.

3. A variable camber wing leading edge mechanism based on knuckle structure according to claim 2, characterized in that: The first finger comprises a connecting rod I, a connecting rod II, a connecting rod III, a horizontal rod I and an arc-shaped connecting rod; the second finger comprises an L-shaped connecting rod, a connecting rod IV, a horizontal rod II and an inclined rod; the third finger comprises a D-shaped connecting rod and a horizontal rod III; the connecting rod I is fixed at the left and right sides of the bottom of the front end of the wing middle support respectively; the connecting rod II is arranged at the inner side of the connecting rod I respectively, the lower end of the connecting rod II on both sides is rotatably connected with the rear end of the corresponding connecting rod I, and the upper end of the connecting rod II on both sides is rotatably connected with the driving assembly; the connecting rod III is arranged above the connecting rod I respectively, and the rear end of the connecting rod III on both sides is rotatably connected with the upper end of the corresponding connecting rod II; the L-shaped connecting rod is arranged at the front end of the connecting rod I respectively, and the upper end of the L-shaped connecting rod on both sides is rotatably connected with the front end of the corresponding connecting rod III; the bending part of the L-shaped connecting rod on both sides is rotatably connected with the front end of the corresponding connecting rod I; the D-shaped connecting rod is arranged at the front end of the L-shaped connecting rod respectively; the bottom front end of the L-shaped connecting rod on both sides is fixed with the rear bottom end of the corresponding D-shaped connecting rod; the top end of the L-shaped connecting rod on both sides is fixed with the top end of the corresponding D-shaped connecting rod through the connecting rod IV; the horizontal rod I is fixed between the rear ends of the connecting rod I on both sides; the horizontal rod II is fixed between the front ends of the connecting rod I on both sides; the arc-shaped connecting rod is arranged on the upper part of the front end of the wing middle support; the front side of the arc-shaped connecting rod and the horizontal rod II are fixed through the inclined rod; and the rear end of the arc-shaped connecting rod is fixed with the wing middle support.

4. A variable camber wing leading edge mechanism based on knuckle structure according to claim 3, characterized in that: The variable camber skin comprises an upper variable camber skin assembly and a lower variable camber skin assembly; the upper variable camber skin assembly covers the upper surface of the wing middle support and the deformation skeleton; and the lower variable camber skin assembly covers the lower surface of the wing middle support and the deformation skeleton.

5. A variable camber wing leading edge mechanism based on knuckle structure according to claim 4, characterized in that: The upper variable camber skin assembly comprises a leading edge upper variable camber skin, a boss and a main upper variable camber skin; the main upper variable camber skin is fixed on the rear side of the upper surface of the wing middle support; the wing middle support is provided with a sliding groove on both sides of the upper surface; the leading edge upper variable camber skin covers the upper surface of the wing middle support and the deformation skeleton; the boss is fixed on the bottom of the front side of the leading edge upper variable camber skin; the front side of the leading edge upper variable camber skin is slidably connected with the corresponding sliding groove through the boss, and the leading edge upper variable camber skin and the main upper variable camber skin partially overlap in the initial state.

6. A variable camber wing leading edge mechanism based on knuckle structure according to claim 4, characterized in that: The lower variable camber skin assembly comprises an omega spring and a lower variable camber skin; the lower variable camber skin covers the lower surface of the wing middle support and the deformation skeleton; the lower end surface of the connecting rod I is provided with a circular slot in the middle; the omega spring is arranged in the circular slot respectively; the bottom of the omega spring is fixedly connected with the inner surface of the lower variable camber skin respectively; and the part of the lower variable camber skin below the open end of the omega spring is provided with a bevel cut.

7. A variable camber wing leading edge mechanism based on knuckle structure according to claim 2, characterized in that: The driving assembly comprises a sleeve, a driving connecting rod, a sliding rod, a gear, a rack, a motor and a shaft; the motor is fixedly connected to the inner bottom of the wing middle support; the shaft is transversely connected to the output end of the motor; the gear is fixedly connected to the two ends of the shaft; the rack is arranged on the two sides of the motor and is slidingly connected to the bottom of the wing middle support; the two racks are engaged with the corresponding gears; the sliding rod is arranged on the outer side of the rack in parallel and is fixedly connected to the bottom of the wing middle support; the sleeve is fixedly connected to the outer side of the rear end of the rack and is slidingly connected with the sliding rod; the driving connecting rod is arranged above the rack; and the two ends of the driving connecting rod are rotatably connected with the corresponding sleeve and the connecting rod II respectively.

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