Driving device for enabling wings to generate torsional deformation
By designing a driving device for worm gears to transmit torque, the controllable torsion deformation of the wing of a variant aircraft is achieved, and the problem of insufficient changes in the torsional shape of the wing in the prior art is solved, and the flight performance and adaptability are improved.
Patent Information
- Application Number
- CN202411469564.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-01-14
AI Technical Summary
In the prior art, there are fewer changes in the twisted shape of the wing during flight, making it difficult to effectively improve flight performance and adapt to complex flight environments.
A driving device is designed to use worm gears to transmit torque, so as to generate controllable torsion angles between different airfoil sections of the wing, including motors, drive shafts, support plates, worms, cut worm gears, composite circular tubes and The connecting plate realizes torsional deformation of the wing through the cooperation of these components.
Active adjustment of the wing torsion angle is achieved, and the flight performance and ability to adapt to complex flight environments are improved. The solution is feasible and practical.
Smart Images
Figure CN119305716A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of structural design of variant aircraft and can be applied to the wings of the variant aircraft to drive and control the torsional deformation of the wings. Background Art
[0002] During flight, the morphing aircraft can change the geometric parameters of the wing, such as the twist angle, airfoil camber, sweep angle, wing area, dihedral angle, etc., according to the flight environment and flight requirements, to change the shape of the wing and improve the aerodynamic performance of the wing. The change in the twist angle can improve the pitch and roll maneuverability. Therefore, the torsional deformation of the wing is of great significance to improving the flight performance of the morphing aircraft and improving the adaptability of the morphing aircraft to complex flight environments.
[0003] In the current public research on variant aircraft, there is little content related to changing the twisted shape of the wings. Summary of the invention
[0004] In order to solve the problem of driving the torsional deformation of the wing, the present invention discloses a driving device that can control the torsional deformation of the wing. The present invention utilizes a worm gear to transmit torque, so that a controllable torsion angle is generated between different airfoil sections along the span direction, thereby realizing the torsion of the wing structure.
[0005] To achieve the above object, the present invention provides the following technical solutions: A driving device for causing a wing to torsion deformation, the driving device is located between a front beam and a rear beam, and is characterized in that the driving device comprises: a motor, a driving shaft, a support plate, a worm, a cut worm gear, a composite round tube, a pair of first connecting plates, and a second connecting plate.
[0006] A certain position in the wing span direction is selected as the driving point. The wing portion from the wing root to the driving point is called the fixed section, and the wing portion from the driving point to the wing tip is called the deformation section. A fixed section rib is set at the driving point, and a deformation section rib is set at a certain distance from the fixed section rib along the span direction. The motor, support plate, worm and cut worm gear are located on the side of the fixed section rib close to the wing root. The drive shaft passes through the connecting hole of the web of the fixed section rib and is installed on the web of the fixed section rib with a pair of first connecting plates. The second connecting plate is fixed to the web of the deformation section rib. The composite round tube is fixed between the drive shaft and the second connecting plate.
[0007] The first connecting plate and the second connecting plate are respectively located on the webs of the fixed section rib and the deformable section rib of the wing; the motor cooperates with the worm; the worm cooperates with the cut worm wheel; the cut worm wheel is fixedly connected to the drive shaft; the drive shaft is installed on the fixed section rib by a pair of first connecting plates, the second connecting plate is fixed on the deformable section rib, and the two ends of the composite round tube are respectively fixedly connected to the drive shaft and the second connecting plate; the motor drives the worm to rotate, the worm transmits the rotation to the cut worm wheel, and the cut worm wheel drives the drive shaft to rotate; the composite round tube transmits the rotation of the drive shaft to the deformable section rib; one end of the composite round tube is fixedly connected to the force transmission section of the drive shaft to receive the torque of the drive shaft; the other end of the composite round tube is fixedly connected to the second connecting plate 8 to transmit the torque to the deformable section rib, drive the deformable section rib to rotate, and realize wing twisting.
[0008] Furthermore, the drive shaft is a tubular structure, which is divided into three parts along the axis: the first part is called the drive shaft worm gear section, which is fixedly connected to the cut worm gear; the second part is called the shaft shoulder, which is installed in the connecting hole of the web with the help of the first connecting plate; the third part is called the force transmission section, which is fixedly connected to the composite round tube; the drive shaft worm gear section has the same outer diameter as the force transmission section, and the diameter of the shaft shoulder is larger than the outer diameter of the drive shaft; the drive shaft material is selected from high-strength alloy steel and is located at the rigid core shaft position of the wing.
[0009] Furthermore, the first connecting plate is a square alloy plate, and the side length is smaller than the airfoil height at the rigid core axis minus the thickness of the upper and lower edge strips; the circular hole at the center is adapted to the outer diameter of the drive shaft worm gear section of the drive shaft; the first connecting plate has a circular depression on the surface in contact with the shoulder, the outer diameter of the first connecting plate is adapted to the shoulder, and the depth of the first connecting plate is the thickness of the shoulder minus the thickness of the web divided by 2; the two first connecting plates are mirror-symmetrical on the left and right of the shoulder, and are fixed to the fixed section wing rib web with bolts.
[0010] Furthermore, the second connecting plate is a square alloy plate, and the side length is less than the airfoil height at the rigid core axis minus the thickness of the upper and lower edge strips; a section of circular tube is arranged at the center of the second connecting plate, and the outer diameter of the second connecting plate is adapted to the inner diameter of the composite circular tube; the second connecting plate cooperates with the composite circular tube, and the second connecting plate is fixed to the web of the deformed section wing rib with bolts.
[0011] Furthermore, the support plate is located at the angle formed by the fixed section wing rib and the rear beam, and is used to install the motor and the worm, and to constrain the axial movement of the worm; the support plate material is selected from high-carbon steel with good wear resistance; the support plate has a recess at the edge close to the fixed section wing rib and the rear beam, and is connected to the upper and lower edge strips of the rear beam and the upper and lower edge strips of the fixed section wing rib through the recess; the outer surface of the support plate is consistent with the shape of the skin, close to the skin, and the top view projection of the support plate is a rectangle; the length and width of the support plate projection rectangle are greater than the sum of the motor diameter and the worm diameter; the worm mounting part and the motor fixing part on the inner surface of the support plate are locally thickened to form a worm mounting hole and a horizontal mounting platform respectively.
[0012] Furthermore, the worm is a cylindrical worm with a gear under the spiral part; the upper and lower ends of the worm have rotating shafts that cooperate with the mounting holes of the support plate, and the rotating shaft is a stepped shaft with a positioning shoulder; the worm is located in front of the rear beam, close to the fixed section wing rib web; the worm material is an alloy steel with good wear resistance.
[0013] Furthermore, the cut worm gear includes a joint, worm wheel teeth, a boss, and a lever arm; the joint is fixedly connected to the driving section, and the worm wheel teeth cooperate with the worm; the joint is in the shape of a circular ring, and the inner diameter is the same as the outer diameter of the driving section; the boss is a rectangular parallelepiped, located at the end of the lever arm, and has worm wheel teeth on the boss; the contact surface between the worm wheel teeth and the worm is an inwardly recessed cylindrical surface, and the cylindrical surface cooperates with the worm; the projection of the end of the worm wheel teeth on the lever arm plane is an outwardly protruding arc, and the arc is the same as the worm wheel arc corresponding to the teeth; the cross-sectional shape of the lever arm is an I-shape, and the projection shape on the lever arm plane is a trapezoid; the height of the trapezoid gradually decreases from the side close to the joint to the side close to the boss, and smoothly transitions to the outer shape of the joint and the boss; the material for cutting the worm gear is an alloy steel with good wear resistance.
[0014] Furthermore, the composite circular tube is made of carbon fiber, the inner diameter of the composite circular tube is the same as the outer diameter of the force transmission section, and the axial length of the composite circular tube is determined by the distance between the wing deformation section and the fixed section; the composite circular tube cooperates with the force transmission section, and the composite circular tube is fixed to the web of the deformation section rib by a second connecting plate.
[0015] The beneficial effects of the present invention compared with the prior art are: The invention can actively adjust the direction and size of the wing twist angle, and the scheme is highly feasible and practical. The invention uses a worm gear to transmit torque, so that a controllable twist angle is generated between different airfoil sections along the span direction, thereby realizing the twisting of the wing structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A driving device and distribution diagram for causing a wing to twist and deform according to the present invention; Figure 2 A schematic diagram of a driving shaft of a driving device for causing a wing to torsion deformation according to the present invention; Figure 3 This is a schematic diagram of a first connecting plate of a driving device for causing a wing to torsion deformation according to the present invention; Figure 4 A schematic diagram of the installation of a drive shaft of a drive device for causing a wing to torsion deformation according to the present invention; Figure 5 A schematic diagram of the installation of a support plate of a driving device for causing a wing to torsion deformation according to the present invention; Figure 6 A schematic diagram of a worm structure of a driving device for causing a wing to torsion deformation according to the present invention; Figure 7 A schematic diagram of a cut worm gear structure of a driving device for causing a wing to torsion deformation according to the present invention; Figure 8 This is a schematic diagram of the structure of a second connecting plate of a driving device for causing a wing to torsion deformation according to the present invention; Fig. 9 The figure is a simplified diagram of the cut-out worm gear size of a driving device for causing torsional deformation of a wing according to the present invention.
[0017] Among them, 1-motor, 2-drive shaft, 3-support plate, 4-worm, 5-cut worm wheel, 6-composite round tube, 7-first connecting plate, 8-second connecting plate, 9-fixed section rib, 10-deformation section rib, 11-front beam, 12-rear beam, 13-skin, 14-drive section, 15-shaft shoulder, 16-force transmission section, 17-worm mounting hole, 18-horizontal mounting platform, 19-rotating shaft, 20-gear, 21-joint, 22-force arm, 23-boss, 24-worm wheel teeth, 25-round tube. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail by enumerating examples below. It should be noted that the specific implementation described here is only used to explain the present invention and is not used to limit the present invention.
[0019] like Figures 1 to 8 As shown, the driving device of the present invention is composed of a motor 1, a driving shaft 2, a support plate 3, a worm 4, a cut worm wheel 5, a composite round tube 6, a first connecting plate 7 and a second connecting plate 8, and is located between the fixed section rib 9 and the deformed section rib 10 of the wing. The driving shaft 2 is connected to the fixed section rib 9 through the connecting plate, and the motor 1 drives the worm wheel 4 to drive the driving shaft 2 to rotate. The driving shaft 2 transmits the torque to the deformed section rib 10 with the help of the composite round tube 6, driving the deformed section rib 10 to rotate, so that the deformed section of the wing undergoes torsional deformation.
[0020] The drive shaft 2 is a tubular structure, which is divided into three parts along the axis: the first part is called the drive section 14, which is fixedly connected to the cut worm gear 5; the second part is called the shaft shoulder 15, which is installed in the connection hole of the web by means of the first connecting plate 7; the third part is called the force transmission section 16, which is fixedly connected to the composite round tube 6. The outer diameter of the drive section and the force transmission section 16 is the same, and the diameter of the shaft shoulder 15 is larger than the outer diameter of the shaft. The material of the drive shaft 2 is high-strength alloy steel, which is located at the rigid core shaft position of the wing.
[0021] The first connecting plate 7 is a square alloy plate, the side length of which is less than the airfoil height at the rigid core axis minus the thickness of the upper and lower edge strips. The circular hole at the center is adapted to the outer diameter of the driving section. There is a circular depression on the surface in contact with the shoulder 15, the outer diameter is adapted to the shoulder 15, and the depth is the thickness of the shoulder 15 minus the thickness of the web divided by 2. The two first connecting plates 7 are mirror-symmetrical on the left and right of the shoulder 15 and are fixed to the web of the fixed section rib 9 with bolts.
[0022] The support plate 3 has a recess at the edge near the ribs and the rear beam 12, and is connected to the upper and lower edges of the rear beam 12 and the upper and lower edges of the fixed section ribs 9 through the recess. The outer surface of the support plate 3 matches the shape of the skin 13, is close to the skin 13, and is projected as a rectangle in the top view. The length and width of the projected rectangle are slightly larger than the sum of the diameters of the motor 1 and the worm 4. There is local thickening at the worm 4 installation location and the motor 1 fixing location on the inner surface, forming a mounting hole and a horizontal mounting support respectively. The support plate 3 is located at the angle formed by the fixed section rib 9 and the rear beam 12, and is used to install the motor 1 and the worm 4, and to constrain the axial movement of the worm 4. The material selected is high-carbon steel with good wear resistance. The worm gear 4 transmission is an ordinary cylindrical worm 4 transmission.
[0023] The worm 4 is a cylindrical worm 4, and a gear 20 is provided below the spiral part. The upper and lower ends of the worm 4 are provided with a rotating shaft 19 that matches with the mounting holes of the support plate 3. The rotating shaft 19 is a stepped shaft with a positioning shoulder 15. The worm 4 is located in front of the rear beam 12, close to the web of the fixed section wing rib 9. The material is alloy steel with good wear resistance.
[0024] The cutting worm wheel 5 is composed of a joint 21, worm wheel teeth 34, a boss 23 and a lever arm 22. The joint 21 is in the shape of a circular ring, and its inner diameter is the same as the outer diameter of the driving section 14. The boss 23 is a rectangular parallelepiped, located at the end of the lever arm 22, and has worm wheel teeth 34 thereon. The contact surface between the worm wheel teeth 34 and the worm 4 is an inwardly concave cylindrical surface, and the cylindrical surface cooperates with the worm 4; the projection of the end on the plane of the lever arm 22 is an outwardly protruding arc, and the arc is the same as the worm wheel arc corresponding to the teeth. The cross-sectional shape of the lever arm 22 is an I-shaped, and the projection shape on the plane of the lever arm 22 is a trapezoid. The height of the trapezoid gradually decreases from the side close to the joint 21 to the side close to the boss 23, and smoothly transitions with the outer shape of the joint 21 and the boss 23. The joint 21 is fixedly connected to the driving section 14, and the teeth cooperate with the worm 4. The material of the cutting worm wheel 5 is selected from alloy steel with good wear resistance.
[0025] The composite circular tube 6 is made of carbon fiber, has an inner diameter the same as the outer diameter of the force transmission section 16, and an axial length determined by the distance between the wing deformation section and the fixed section. The composite circular tube 6 cooperates with the force transmission section 16 and is fixed to the web of the deformation section rib 10 by a second connecting plate 8.
[0026] The second connecting plate 8 is a square alloy plate, the side length of which is less than the airfoil height at the rigid core axis minus the thickness of the upper and lower edge strips. A section of round tube 25 is arranged at the center, and its outer diameter is adapted to the inner diameter of the composite round tube 6. The second connecting plate 8 cooperates with the composite round tube 6 and is fixed to the web of the deformed section wing rib 10 with bolts.
[0027] The material of the skin 13 where the driving device is located can be an alloy material with low rigidity, high flexibility and high toughness.
[0028] The present invention is described below with data, which are used to quantitatively explain the present invention and are not limited to the present invention.
[0029] The specific embodiment is as follows: the wing airfoil is NACA0012, the rib chord length is 1.5m, the web thickness is 4mm, the distance between the fixed section rib and the deformed section rib is 0.8m, the distance between the rigid center and the leading edge is 470mm, the distance between the front beam and the leading edge is 375mm, and the distance between the rear beam and the leading edge is 1000mm.
[0030] The inner diameter of the drive shaft is 90mm. The outer diameter of the drive section is 100mm, and the axial length is 60mm; the diameter of the shaft shoulder is 130mm, and the axial length is 10mm; the diameter of the force transmission section is 100mm, and the axial length is 50mm, with 6 screw holes evenly distributed on it.
[0031] The connecting plate 1 has a thickness of 7 mm, a side length of 160 mm, an inner diameter of a circular hole of 100 mm, an inner diameter of a circular depression of 100 mm, an outer diameter of 130 mm, and a depth of 3 mm. There are 12 connecting holes cooperating with the web near the edge of the connecting plate 1.
[0032] The thickness of the support plate is 5mm, and its projection rectangle in the top view is 200mm long and 150mm wide. The indentation height of the support plate near the edge of the rib and the rear beam is 5mm, and the shape is consistent with the edge strip. The center of the worm mounting hole is 30mm away from the rib web and 50mm away from the rear beam web; the horizontal mounting support of the motor is a square plate with a side length of 90mm, a thickness of 5mm, and a center distance of 100mm from the rib web and 64mm from the rear beam web. There is a motor mounting hole in the middle of the support, the diameter of which is larger than the motor diameter, and there are connection holes for the motor flange around it.
[0033] The parameters of the worm are as follows: the pitch circle diameter is 40mm; the number of heads is 1; the module is 4; the pressure angle is 20°. The thread is right-handed. The pitch circle diameter of the gear is 50 and the module is 2. The distance between the worm axis and the back beam is 50mm. The length of the spiral part is 100mm. The pitch circle diameter of the gear below the thread is 50mm, the tooth width is 10mm, and the module is 2. The shaft diameter at the upper and lower ends is 10mm, and the axial length is 10mm; the shoulder diameter is 15mm, and the axial length is 3mm.
[0034] The parameters of the cut worm gear are as follows: axial thickness is 30mm. The outer diameter of the joint is 120mm and the inner diameter is 100mm. The length of the lever arm is 388mm and the height of the end is 30mm. The thickness of the upper and lower edge strips of the lever arm is 5mm, and the thickness of the web is 10mm. At 39mm from the center of the joint, the geometric shape of the lever arm and the outer circle shape of the joint are smoothly transitioned through an arc; the geometric shape of the end of the lever arm and the geometric shape of the boss are also smoothly transitioned through an arc. The height of the boss on the projection surface of the lever arm is 50mm, the width is 20mm, and it has 4 worm gear teeth. The radius of the bottom circle corresponding to the concave cylindrical surface on the gear tooth is 20mm, and the center of the circle is 486mm away from the center of the joint; the radius corresponding to the convex arc is 467mm, and the center of the circle is located at the center of the joint. The worm gear parameters corresponding to the gear teeth are: the center of the index circle is located at the center of the joint, the diameter is 920mm; the module is 4; the tooth width is 30mm; the outer diameter is 934mm.
[0035] The composite round tube has an axial length of 780 mm, an outer diameter of 110 mm, and an inner diameter of 100 mm. There are 6 screw holes evenly distributed on both ends.
[0036] The thickness of the connecting plate 2 is 5mm and the side length is 160mm. The outer diameter of the middle round tube is 100mm, the inner diameter is 90mm, and the axial height is 50mm. There are 12 connection holes matching the web near the edge of the connecting plate 2, and 6 screw holes are evenly distributed along the circumference of the round tube on it.
[0037] In the scenario described, the motor has a power range of 5-10Nm, a height of 110mm, a diameter of 75mm, and is fixed to a horizontal mounting table by a square flange. A gear is installed on the motor shaft, with a pitch circle diameter of 90mm, a tooth width of 10mm, and a module of 2. At this time, the motor can drive the wing to produce torsional deformation. If a larger driving torque is required, a higher power hydraulic motor can be used to achieve torsional deformation.
[0038] The above is only one application of the present invention. It should be pointed out that without departing from the principle of the present invention, the materials, structural dimensions or motor power of each component can be appropriately improved to ensure the safety and reliability of the structure, and the wings can achieve ideal torsional deformation after overcoming all hindering torques. These improvements are also considered to be within the protection scope of the present invention.
Claims
1. A driving device for causing a wing to torsion deformation, the driving device being located between a front beam (11) and a rear beam (12), characterized in that: The driving device comprises: a motor (1), a driving shaft (2), a support plate (3), a worm (4), a cut worm wheel (5), a composite round tube (6), a pair of first connecting plates (7), and a second connecting plate (8); the first connecting plate (7) and the second connecting plate (8) are respectively located on the webs of the fixed section rib (9) and the deformable section rib (10) of the wing; The motor (1) cooperates with the worm (4); the worm (4) cooperates with the cut worm wheel (5); the cut worm wheel (5) is fixedly connected to the drive shaft (2); the drive shaft (2) is mounted on the fixed section rib (9) by a pair of first connecting plates (7); the second connecting plate (8) is fixed on the deformable section rib (10); and the two ends of the composite circular tube (6) are respectively fixedly connected to the drive shaft (2) and the second connecting plate (8); The motor (1) drives the worm (4) to rotate, and the worm (4) transmits the rotation to the cut worm wheel (5), and the cut worm wheel (5) drives the drive shaft (2) to rotate; the composite circular tube (6) transmits the rotation of the drive shaft (2) to the deformation section rib (10); one end of the composite circular tube (6) is fixedly connected to the force transmission section (16) of the drive shaft (2) to receive the torque of the drive shaft (2); the other end of the composite circular tube (6) is fixedly connected to the second connecting plate 8 to transmit the torque to the deformation section rib (10), drive the deformation section rib (10) to rotate, and realize wing twisting.
2. A driving device for causing a wing to twist and deform according to claim 1, characterized in that: The drive shaft (2) is a tubular structure, which is divided into three parts along the axis: the first part is called the drive shaft worm gear section, which is fixedly connected to the cut worm gear (5); the second part is called the shaft shoulder (15), which is installed in the connecting hole of the web by means of the first connecting plate (7); the third part is called the force transmission section (16), which is fixedly connected to the composite material round tube (6); the drive shaft worm gear section and the force transmission section (16) have the same outer diameter, and the diameter of the shaft shoulder (15) is larger than the outer diameter of the drive shaft; the drive shaft material is selected from high-strength alloy steel and is located at the rigid core shaft position of the wing.
3. A driving device for causing a wing to torsion deformation according to claim 2, characterized in that: The first connecting plate (7) is a square alloy plate, the side length of which is less than the airfoil height at the rigid core axis minus the thickness of the upper and lower edge strips; the circular hole at the center is adapted to the outer diameter of the drive shaft worm gear section of the drive shaft (2); the first connecting plate (7) has a circular depression on the surface in contact with the shaft shoulder (15); the outer diameter of the first connecting plate (7) is adapted to the shaft shoulder (15); the depth of the first connecting plate (7) is the thickness of the shaft shoulder (15) minus the thickness of the web divided by 2; the two first connecting plates (7) are mirror-symmetrically located on the left and right of the shaft shoulder (15) and are fixed to the web of the fixed section wing rib by bolts.
4. The driving device for causing a wing to torsion deformation according to claim 1, characterized in that: The second connecting plate (8) is a square alloy plate, the side length of which is less than the airfoil height at the rigid core axis minus the thickness of the upper and lower edge strips; a section of circular tube (25) is arranged at the center of the second connecting plate (8), and the outer diameter of the second connecting plate (8) is adapted to the inner diameter of the composite circular tube; the second connecting plate (8) cooperates with the composite circular tube (6), and the second connecting plate (8) is fixed to the web of the deformed section wing rib by bolts.
5. The driving device for causing a wing to torsion deformation according to claim 1, characterized in that: The support plate (3) is located at the angle formed by the fixed section rib (9) and the rear beam (12), and is used to install the motor (1) and the worm (4), and to constrain the axial movement of the worm; the material of the support plate (3) is selected from high-carbon steel with good wear resistance; the support plate (3) has an indentation at the edge close to the fixed section rib (9) and the rear beam (12), and is connected to the upper and lower edge strips of the rear beam and the upper and lower edge strips of the fixed section rib (9) through the indentation; the outer surface of the support plate (3) is consistent with the shape of the skin (13), close to the skin (13), and the top view projection of the support plate (3) is rectangular; the length and width of the projection rectangle of the support plate (3) are greater than the sum of the diameter of the motor and the diameter of the worm (4); The inner surface of the support plate (3) is partially thickened at the worm mounting location and the motor fixing location to form a worm mounting hole (17) and a horizontal mounting platform (18), respectively.
6. The driving device for causing a wing to torsion deformation according to claim 1, characterized in that: The worm (4) is a cylindrical worm, and a gear (20) is provided below the spiral portion; the upper and lower ends of the worm (4) are provided with a rotating shaft (19) that cooperates with the mounting hole of the support plate, and the rotating shaft (19) is a stepped shaft with a positioning shoulder; the worm (4) is located in front of the rear beam (12) and close to the web of the fixed section wing rib; the material of the worm (4) is an alloy steel with good wear resistance.
7. The driving device for causing a wing to torsion deformation according to claim 1, characterized in that: The cutting worm wheel (5) comprises a joint (21), worm wheel teeth (24), a boss (23), and a lever arm (22); the joint (21) is fixedly connected to the driving section (14), and the worm wheel teeth (24) cooperate with the worm (4); the joint (21) is in the shape of a ring, and the inner diameter is the same as the outer diameter of the driving section (14); the boss (23) is a rectangular parallelepiped, located at the end of the lever arm (22), and the boss (23) is provided with worm wheel teeth (24); the contact surface between the worm wheel teeth (24) and the worm (4) is oriented in the opposite direction. The cylindrical surface is concave inwardly, and the cylindrical surface cooperates with the worm (4); the projection of the end of the worm wheel tooth (24) on the lever arm plane is an outwardly convex arc, and the arc is the same as the worm wheel arc corresponding to the tooth; the cross-sectional shape of the lever arm (22) is an I-shaped, and the projection shape on the lever arm (22) plane is a trapezoid; the height of the trapezoid gradually decreases from the side close to the joint (21) to the side of the boss (23), and smoothly transitions with the outer shape of the joint (21) and the boss (23); the material for cutting the worm wheel (5) is selected from alloy steel with good wear resistance.
8. The driving device for causing a wing to torsion deformation according to claim 1, characterized in that: The composite circular tube (6) is made of carbon fiber, the inner diameter of the composite circular tube (6) is the same as the outer diameter of the force transmission section (16), and the axial length of the composite circular tube (6) is determined by the distance between the wing deformation section and the fixed section; the composite circular tube (6) cooperates with the force transmission section (16), and the composite circular tube (6) is fixed to the web of the deformation section rib by a second connecting plate (8).