Pivot driving structure for variable sweepback wing

Abstract

The invention belongs to the field of aircraft structure design, and particularly relates to a pivot driving structure for a variable sweepback wing. The device structurally comprises a bottom plate which comprises an upper bottom plate and a lower bottom plate, the upper bottom plate and the lower bottom plate are installed on a machine body frame, an installation space is formed between the upper bottom plate and the lower bottom plate, an upper guide rail is installed on the upper bottom plate, and a lower guide rail is installed on the lower bottom plate; the wing pivot is mounted between the upper bottom plate and the lower bottom plate; the worm gear is installed on the wing pivot through a pivot bearing, the worm gear can rotate around the wing pivot, a sliding block is installed on the worm gear, and the sliding block is installed in the upper guide rail and the lower guide rail in a sliding mode; the movable wings are mounted on the worm wheels; the worm is installed on the lower bottom plate through a front bearing seat and a rear bearing seat, and the worm is connected with the worm gear in a matched mode; the ultrasonic motor is installed on the lower bottom plate and drives the worm to rotate through a coupler. According to the invention, rapid and high-precision adjustment of the sweepback angle of the wing is realized with low weight cost.

Description

Technical Field

[0001] This application belongs to the field of aircraft structural design, and specifically relates to a pivot drive structure for a variable sweep wing. Background Technology

[0002] With the increasing demand for multi-functional and high-performance aircraft in the aerospace field, modern morphing aircraft, biomimetic flight, and smart material structures have become research hotspots in the field of aerospace technology innovation. Compared with fixed-shape aircraft, modern morphing aircraft can flexibly change their shape and size according to changes in the environment and mission, and obtain optimal performance in real time.

[0003] Variable sweep wing technology aims to change the sweep angle by adjusting the fore-and-aft position of the wing, so that the aircraft can meet the aerodynamic requirements of both high-speed and low-speed flight. When the aircraft is in low-speed flight conditions such as takeoff and landing, the wing rotates forward to reduce the sweep angle to improve the low-speed flight performance and shorten the takeoff and landing distance. When the aircraft is in high-speed flight conditions, the wing rotates backward to increase the sweep angle to reduce flight drag and improve the high-speed flight performance.

[0004] Traditional variable-sweep wing structures, due to their large weight and slow response speed, have only been used on a few aircraft models. Limited by the flight control technology of the time, variable-sweep wing technology could not achieve its maximum aerodynamic efficiency. With the development of flight control and materials technology, lightweight and efficient variable-sweep wing structures have broad application prospects in future aircraft design, especially in hypersonic aircraft.

[0005] Therefore, there is an urgent need for a technical solution to overcome or mitigate at least one of the aforementioned defects in the existing technology. Summary of the Invention

[0006] The purpose of this application is to provide a pivot drive structure for variable sweep wings to solve the problems of excessive weight and insignificant aerodynamic benefits of existing conventional variable sweep drive structures.

[0007] The technical solution of this application is:

[0008] A pivot drive structure for a variable-sweep wing includes:

[0009] The base plate includes an upper base plate and a lower base plate, which are mounted on the machine frame. There is an installation space between the upper base plate and the lower base plate. An upper guide rail is mounted on the upper base plate and a lower guide rail is mounted on the lower base plate.

[0010] A wing pivot, which is mounted between the upper base plate and the lower base plate;

[0011] A worm gear is mounted on the wing pivot via a pivot bearing. The worm gear is rotatable about the wing pivot. A slider is mounted on the worm gear and is slidably mounted in the upper guide rail and the lower guide rail.

[0012] A movable wing, which is mounted on the worm gear;

[0013] The worm gear is mounted on the lower base plate via a front bearing seat and a rear bearing seat, and the worm gear is connected to the worm wheel.

[0014] An ultrasonic motor is mounted on the lower base plate and drives the worm gear to rotate via a coupling.

[0015] In at least one embodiment of this application, a weight-reducing hole is provided on the upper base plate.

[0016] In at least one embodiment of this application, a weight-reducing hole is provided on the lower base plate.

[0017] In at least one embodiment of this application, both the upper guide rail and the lower guide rail are arc-shaped, with the center of the arc being the wing pivot.

[0018] In at least one embodiment of this application, the slider is provided with a weight reduction hole.

[0019] In at least one embodiment of this application, a heat insulation pad is provided between the movable wing and the worm gear.

[0020] In at least one embodiment of this application, the worm gear and the worm wheel cooperate to drive the movable wing to rotate between a sweep angle of 16° and 72°.

[0021] The invention has at least the following beneficial technical effects:

[0022] The pivot drive structure for variable-sweep wings presented in this application can be applied to the design of variable-sweep wing aircraft, enabling rapid and high-precision adjustment of the wing sweep angle with minimal weight loss. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of a pivot drive structure for a variable sweep wing according to one embodiment of this application;

[0024] Figure 2 This is a partial schematic diagram of a pivot drive structure for a variable sweep wing according to one embodiment of this application;

[0025] Figure 3 This is a schematic diagram of a worm gear and a slider according to one embodiment of this application.

[0026] in:

[0027] 1-Moving wing, 2-Slider, 3-Wing pivot, 4-Worm gear, 5-Fuselage frame, 6-Upper base plate, 7-Front bearing housing, 8-Lower base plate, 9-Worm, 10-Rear bearing housing, 11-Ultrasonic motor, 12-Lower guide rail, 13-Upper guide rail, 14-Heat insulation pad, 15-Pivot bearing. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0029] 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.

[0030] The following is in conjunction with the appendix Figures 1 to 3 This application will be described in further detail.

[0031] Due to limited internal space in the wing and the need to accommodate components such as fuel tanks, the drive structure of a variable-sweep wing should be as compact as possible. During high-speed flight, the leading edge of the wing experiences significant wind pressure. Therefore, the drive structure of a variable-sweep wing needs to output sufficient torque to rapidly adjust the wing sweep angle. Simultaneously, the drive structure must possess a mechanical self-locking function to prevent sudden or asymmetrical changes in the wing sweep angle due to electrical faults, which could lead to loss of aircraft control.

[0032] Based on the above requirements, this application provides a pivot drive structure for a variable sweep wing, including: a base plate, a wing pivot 3, a worm gear 4, a movable wing 1, a worm 9, and an ultrasonic motor 11.

[0033] Specifically, such as Figure 1As shown, the base plate includes an upper base plate 6 and a lower base plate 8, which are mounted on the fuselage frame 5. There is an installation space between the upper base plate 6 and the lower base plate 8. An upper guide rail 13 is mounted on the upper base plate 6, and a lower guide rail 12 is mounted on the lower base plate 8. The wing pivot 3 is mounted between the upper base plate 6 and the lower base plate 8.

[0034] In a preferred embodiment of this application, weight-reducing holes are provided on both the upper base plate 6 and the lower base plate 8. Both the upper guide rail 13 and the lower guide rail 12 are arc-shaped, with the center of the arc being the wing pivot 3.

[0035] The worm gear 4 is mounted on the wing pivot 3 via a pivot bearing 15. The worm gear 4 can rotate around the wing pivot 3. A slider 2 is mounted on the worm gear 4, and the slider 2 is slidably mounted in the upper guide rail 13 and the lower guide rail 12. The worm gear 4, slider 2, and the lower guide rail 12 and upper guide rail 13 cooperate to bear the aerodynamic load on the movable wing 1. Since the upper guide rail 13 and the lower guide rail 12 are both arc-shaped, and the center of the arc is the wing pivot 3, they can always cooperate with the slider 2 when the worm gear 4 rotates. In this embodiment, it is preferable that the slider 2 has a weight-reducing hole.

[0036] The movable wing 1 is mounted on the worm gear 4. In a preferred embodiment of this application, a heat insulation pad 14 is provided between the movable wing 1 and the worm gear 4 to prevent the aerodynamic heat generated on the movable wing 1 during high-speed flight from being transferred to the worm gear 4, causing the temperature of the worm gear 4 to rise, resulting in thermal deformation and transmission jamming.

[0037] The worm gear 9 is mounted on the lower base plate 8 via the front bearing housing 5 and the rear bearing housing 10, and is connected to the worm wheel 4. The ultrasonic motor 11 is mounted on the lower base plate 8 and drives the worm gear 9 to rotate via a coupling. The ultrasonic motor 11 utilizes its high torque at low speed to achieve rapid response in sweep angle adjustment, with a sweep angle adjustment speed exceeding 30° / s and an adjustment accuracy within 0.02°.

[0038] The pivot drive structure for a variable sweep wing of this application, in cooperation with the worm gear 9 and the worm wheel 4, can drive the movable wing 1 to rotate between sweep angles of 16° and 72°. By utilizing the self-locking characteristics of the worm gear mechanism, the movable wing 1 can be locked at any position without the need for power to maintain the driving torque, thereby achieving stepless adjustment of the wing sweep angle.

[0039] The pivot drive structure for variable-sweep wings disclosed in this application can be applied to the design of variable-sweep wing aircraft. It utilizes the mechanical self-locking characteristics of a worm gear mechanism to achieve stepless adjustment of the wing sweep angle without the need for electrical holding, effectively saving onboard energy and improving safety. The overall structure is simple and compact, does not affect the aircraft layout, has high reliability, and is easy to maintain.

[0040] This application provides a variable sweep wing pivot drive structure that is compact, has a large output torque, fast response speed, and mechanical self-locking function. It achieves rapid and high-precision adjustment of the wing sweep angle with a small weight cost, effectively solving the problems of excessive weight and insignificant aerodynamic benefits of traditional variable sweep drive structures. It has broad application prospects in future aircraft design, especially in hypersonic aircraft.

[0041] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pivot drive structure for a variable-sweep wing, characterized in that, include: The base plate includes an upper base plate (6) and a lower base plate (8). The upper base plate (6) and the lower base plate (8) are mounted on the fuselage frame (5). There is an installation space between the upper base plate (6) and the lower base plate (8). An upper guide rail (13) is mounted on the upper base plate (6), and a lower guide rail (12) is mounted on the lower base plate (8). A wing pivot (3) is mounted between the upper base plate (6) and the lower base plate (8); A worm gear (4) is mounted on the wing pivot (3) via a pivot bearing (15). The worm gear (4) is capable of rotating around the wing pivot (3). A slider (2) is mounted on the worm gear (4). The slider (2) is slidably mounted in the upper guide rail (13) and the lower guide rail (12). Movable wing (1), the movable wing (1) is mounted on the worm gear (4); The worm (9) is mounted on the lower base plate (8) via a front bearing seat (5) and a rear bearing seat (10), and the worm (9) is connected to the worm wheel (4). An ultrasonic motor (11) is mounted on the lower base plate (8) and drives the worm gear (9) to rotate via a coupling.

2. The pivot drive structure for a variable-sweep wing according to claim 1, characterized in that, The upper base plate (6) has weight reduction holes.

3. The pivot drive structure for a variable-sweep wing according to claim 2, characterized in that, The bottom plate (8) has weight reduction holes.

4. The pivot drive structure for a variable-sweep wing according to claim 3, characterized in that, Both the upper guide rail (13) and the lower guide rail (12) are arc-shaped, and the center of the arc is the wing pivot (3).

5. The pivot drive structure for a variable-sweep wing according to claim 4, characterized in that, The slider (2) has a weight reduction hole.

6. The pivot drive structure for a variable-sweep wing according to claim 5, characterized in that, A heat insulation pad (14) is provided between the movable wing (1) and the worm gear (4).

7. The pivot drive structure for a variable-sweep wing according to claim 6, characterized in that, The worm (9) and the worm wheel (4) work together to drive the movable wing (1) to rotate between a sweep angle of 16° and 72°.

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