Electric control storable flexible composite material covering cap device
By designing an electrically controlled storage flexible composite material mouth cover device, the sandwich structure of pull-trough, lightweight sandwich and glass fiber, combined with a combination of spring drum and electronically controlled ratchet, the automatic opening and storage of the mouth cover is achieved, and the solution is to The problems of traditional hoods with large weight and large space occupancy have improved the aerodynamic characteristics and operating flexibility of the aircraft.
Patent Information
- Application Number
- CN202411694928.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-02-14
AI Technical Summary
The hood design of traditional aviation aircraft is large in weight, has a large space occupancy, and it is difficult to achieve automatic opening and storage, which affects the aerodynamic characteristics and operating flexibility of the aircraft.
An electrically controlled and stored flexible composite material mouth cover device is designed, and a sandwich structure composed of pull-trough, lightweight sandwich, and glass fiber is combined with a spring roll and an electrically controlled ratchet to realize automatic opening and storage of the mouth cover.
The automatic operation of the hood is realized, which reduces weight and space occupation, and improves the aerodynamic characteristics and operating flexibility of the aircraft.
Smart Images
Figure CN119429074A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of composite material applications for aviation vehicles, and in particular relates to a flexible composite material mouth cover and an electrically controlled storage device thereof. Background Art
[0002] With the continuous development of aviation technology, aircraft face various challenges when performing complex tasks. During flight, aircraft need to interact effectively with the external environment, such as communication signal transmission, cargo unloading, and equipment protection. In order to achieve these functions, aircraft are usually equipped with various movable parts, but these movable parts require large space and strong power. Traditional aircraft cover designs usually use hard materials. Although they have high strength and rigidity, they are heavy and take up a large space after the cover is retracted. They often protrude from the outer surface or occupy a large amount of space inside the aircraft.
[0003] Composite materials, as a new type of material with light weight, high strength and good temperature resistance, are gradually expanding their application scope. Applying composite materials to the design of aircraft covers can effectively reduce the weight of the covers and improve the overall performance of the aircraft. Summary of the invention
[0004] The purpose of the present invention is to design a composite material flap for an aircraft, which can be opened automatically and quickly after receiving a command during flight to meet the need for effective interaction between the aircraft and the external environment. The flap is lightweight, high-strength, and rollable. After closing, it is completely hidden in the cabin, which can greatly reduce the impact on the aerodynamic characteristics of the aircraft. In addition, the flap drive device occupies a small space, which ingeniously provides a more flexible and efficient solution for the aircraft.
[0005] The technical solution of the present invention is:
[0006] An electrically controlled retractable flexible composite material cover device comprises a cabin structure 1, a composite material cover 2, a front pressure plate 3, a rear pressure plate 4, a side pressure plate 5, a spring drum 6 and an electrically controlled ratchet assembly 7;
[0007] Among them, the cabin structure 1 is formed with depressions for installing the composite cover 2 and the front pressure plate 3, the rear pressure plate 4, and the side pressure plate 5 at the front, rear and one side respectively. At each depression, the front pressure plate 3, the rear pressure plate 4, and the side pressure plate 5 are connected to the cabin structure 1 by rivets to form a slide rail groove. The height of the slide rail groove is greater than the thickness of the composite cover 2, thereby ensuring smooth movement of the composite cover 2; the front pressure plate 3, the rear pressure plate 4, and the side pressure plate 5 are long strip-shaped plates, and the contact parts between the cabin structure 1, the front pressure plate 3, the rear pressure plate 4, the side pressure plate 5 and the composite cover 2 are all provided with chamfers to prevent jamming during movement.
[0008] The composite mouth cover 2 is characterized in that the composite mouth cover 2 is composed of a groove 8, a lightweight core 9, an upper glass fiber 10, a lower glass fiber 11, and a softened glass fiber 12. The groove 8 is arranged on one side of the composite mouth cover 2, and the tension is applied through the groove 8 to store energy for the spring drum 6 and close the mouth cover; its structural form is a sandwich structure composed of an upper glass fiber 10, a lightweight core 9 and a lower glass fiber 11. After the sandwich structure is co-cured, a chemical cleaning method is used to soften the glass fibers between adjacent lightweight cores 9 to form softened glass fibers 12, so that a soft connection is formed between different lightweight cores 9, and the composite mouth cover 2 can be bent into a roll shape. The spring drum 6 and the electric-controlled ratchet combination 7 are arranged on the other side of the composite mouth cover 2 and fixed in the cabin. The spring drum 6 can achieve free rotation through the electric-controlled ratchet combination 7.
[0009] It is characterized in that the electric-controlled ratchet assembly 7 is composed of a small electric-controlled telescopic rod 14, an adapter 15, a pawl 16, and a ratchet 17. The mounting plate 13 is fixed to the inner side of the cabin, and the electric-controlled ratchet assembly 7 is installed on the mounting plate 13. The pawl 16 is connected to the small electric-controlled telescopic rod 14 through the adapter 15, and a torsion spring is installed inside. When the ratchet 17 rotates counterclockwise, the pawl 16 is moved to complete the closing of the composite cover 2. When the ratchet 17 stops rotating, the torsion spring acts to fit the pawl 16 into the gear of the ratchet 17, limiting its clockwise rotation; the spring drum 6 is composed of a spring drum 18 and a fixed shaft 19, the ratchet 17 is installed on one side of the fixed shaft 19, and the spring drum 18 is installed on the fixed shaft 19.
[0010] The invention is characterized in that when a power signal is sent, the small electrically-controlled telescopic rod 14 contracts, the pawl 16 moves away from the ratchet 17 , and the ratchet 17 rotates clockwise under the work of the spring drum 18 .
[0011] The feature is that when the flap needs to be closed, a pulling force is applied through the pull groove 8 to store energy for the spring drum 6 and close the flap, and the electrically controlled ratchet assembly 7 is used to ensure that the flap can only move outwards and will not retract.
[0012] It is characterized in that when the aircraft needs to open the cover during flight, the electric-controlled ratchet assembly 7 is powered and activated, the spring reel 6 rotates in the opposite direction and performs work, so that the composite cover 2 is automatically retracted, and the composite cover 2 is automatically opened and stored.
[0013] The feature of the invention is that the lightweight core 9 is made of PMI foam board or aramid paper honeycomb.
[0014] The characteristic is that the lightweight core 9 has a "trapezoidal" cross-section, the lightweight core 9 is continuous in the front-to-back direction to enhance the strength and rigidity of the cover, and each lightweight core 9 is softly connected by a glass fiber composite material, so that the composite cover 2 can be freely bent within a certain angle range.
[0015] The advantages of the present invention are:
[0016] The present invention designs an electrically controlled retractable flexible composite material mouth cover device, which is composed of a plurality of skin sandwich structures, each of which is softly connected by a glass fiber composite material, so that the automatic opening and retraction of the mouth cover can be realized through electric control, and the structure has a certain stealth wave absorbing function. Compared with the traditional hard material mouth cover, the present invention has the advantages of light weight, high strength, compact structure, small driving force and small impact on aerodynamic characteristics, which improves the adaptability and functionality of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 Stealth wave-absorbing composite material automatic opening storage cover mechanism
[0018] Figure 2 Automatic opening of storage lid
[0019] Figure 3 Electric ratchet combination
[0020] Among them, 1 cabin structure, 2 composite cover, 3 front pressure plate, 4 rear pressure plate, 5 side pressure plate, 6 spring drum, 7 electric ratchet combination, 8 groove, 9 lightweight sandwich, 10 upper glass fiber, 11 lower glass fiber, 12 softened glass fiber, 13 mounting plate, 14 small electric telescopic rod, 15 adapter, 16 pawl, 17 ratchet, 18 spring drum, 19 fixed shaft DETAILED DESCRIPTION
[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.
[0022] See attached Figure 1 and attached Figure 2 An electrically controlled retractable flexible composite material cover device is composed of a cabin structure 1, a composite cover 2, a front pressure plate 3, a rear pressure plate 4, a side pressure plate 5, a spring reel 6, and an electrically controlled ratchet assembly 7. The cabin structure 1 includes a depression for installing the composite cover 2 and three pressure plates. The pressure plate and the cabin structure 1 are connected by rivets. The groove formed by the slide rail needs to be slightly larger than the thickness of the composite cover 2 to ensure smooth movement of the composite cover 2. The contact parts of the cabin structure 1, the front pressure plate 3, the rear pressure plate 4, the side pressure plate 5 and the composite cover 2 are chamfered to prevent jamming during movement. The composite cover 2 is composed of a groove 8, a lightweight core 9, an upper layer of glass fiber 10, a lower layer of glass fiber 11, and a softened glass fiber 12. Its structural form is a sandwich structure composed of glass fiber and light core 9. After the combination is co-cured, a chemical cleaning method is used to soften the glass fiber between adjacent light cores 9 to form softened glass fiber 12, so that a soft connection is formed between different light cores 9, and the composite cover 2 can be bent into a roll. The spring drum 6 and the electric control ratchet assembly 7 are fixed to the cabin body, and the spring drum 6 can be freely rotated through the electric control ratchet assembly 7.
[0023] See attached Figure 3The electric-controlled ratchet assembly 7 is composed of a small electric-controlled telescopic rod 14, an adapter 15, a pawl 16, and a ratchet 17. The mounting plate 13 is fixed to the cabin, and the electric-controlled ratchet assembly 7 is mounted on the mounting plate 13. The pawl 16 is connected to the small electric-controlled telescopic rod 14 through the adapter 15, and a torsion spring is installed inside. When the ratchet 17 rotates counterclockwise, the pawl 16 can be moved to complete the closing of the composite cover 2. When the ratchet 17 stops rotating, the torsion spring acts to fit the pawl 16 into the gear of the ratchet 17, limiting its clockwise rotation. The ratchet 17 is installed on both sides of the fixed shaft 19, and the spring drum 18 is installed on the fixed shaft 19. When the power signal is sent, the small electric-controlled telescopic rod 14 contracts, the pawl 16 moves away from the ratchet 17, and the ratchet 17 can rotate clockwise under the work of the spring drum 18.
[0024] When the flap needs to be closed, a pulling force can be applied through the pull groove 8 to store energy for the spring drum 6 and close the flap, and the flap can only move outward and not retract through the electric control ratchet assembly 7. When the aircraft needs to open the flap during flight, the electric control ratchet assembly 7 is powered and activated, and the spring drum 6 can rotate in the opposite direction and work to automatically rewind the composite flap 2, and the composite flap 2 is automatically opened and stored.
Claims
1. An electrically controlled retractable flexible composite material cover device, comprising a cabin structure (1), a composite material cover (2), a front pressure plate (3), a rear pressure plate (4), a side pressure plate (5), a spring drum (6) and an electrically controlled ratchet assembly (7); in, The cabin structure (1) is provided with depressions at the front, rear and one side for installing the composite material cover (2) and the front pressure plate (3), the rear pressure plate (4) and the side pressure plate (5). At each depression, the front pressure plate (3), the rear pressure plate (4) and the side pressure plate (5) are connected to the cabin structure (1) by rivets to form a slide rail groove. The height of the slide rail groove is greater than the thickness of the composite material cover (2), thereby ensuring that the composite material cover (2) can move smoothly. The front pressure plate (3), the rear pressure plate (4) and the side pressure plate (5) are long strip-shaped plates. The contact parts between the cabin structure (1), the front pressure plate (3), the rear pressure plate (4) and the side pressure plate (5) and the composite material cover (2) are all provided with chamfers to prevent jamming during movement.
2. The electrically controlled retractable flexible composite material mouth cover device according to claim 1, characterized in that: The composite mouth cover (2) is composed of a groove (8), a light core (9), an upper layer of glass fiber (10), a lower layer of glass fiber (11), and softened glass fiber (12). The groove (8) is arranged on one side of the composite mouth cover (2). A tension is applied through the groove (8) to store energy for the spring drum (6) and close the mouth cover. The structure is a sandwich structure composed of an upper layer of glass fiber (10), a light core (9) and a lower layer of glass fiber (11). After the sandwich structure is co-cured, a chemical cleaning method is used to soften the glass fibers between adjacent light cores (9) to form softened glass fibers (12), so that different light cores (9) are formed into a soft connection. The composite mouth cover (2) can be bent into a roll shape. The spring drum (6) and an electric-controlled ratchet assembly (7) are arranged on the other side of the composite mouth cover (2) and fixed in the cabin. The spring drum (6) can rotate freely through the electric-controlled ratchet assembly (7).
3. The electrically controlled retractable flexible composite material mouth cover device according to claim 2, characterized in that: The electric-controlled ratchet assembly (7) is composed of a small electric-controlled telescopic rod (14), an adapter (15), a pawl (16), and a ratchet (17). The mounting plate (13) is fixed to the inner side of the cabin body, and the electric-controlled ratchet assembly (7) is mounted on the mounting plate (13). The pawl (16) is connected to the small electric-controlled telescopic rod (14) through the adapter (15). A torsion spring is installed inside. When the ratchet (17) rotates counterclockwise, the pawl (16) is moved to complete the closing of the composite material cover (2). When the ratchet (17) stops rotating, the torsion spring acts to fit the pawl (16) into the gear of the ratchet (17), thereby limiting its clockwise rotation. The spring drum (6) is composed of a spring drum (18) and a fixed shaft (19). The ratchet (17) is mounted on one side of the fixed shaft (19), and the spring drum (18) is mounted on the fixed shaft (19).
4. The electrically controlled retractable flexible composite material mouth cover device as claimed in claim 3, characterized in that: When the power signal is sent, the small electric telescopic rod (14) contracts, the ratchet pawl (16) moves away from the ratchet wheel (17), and the ratchet wheel (17) rotates clockwise under the work of the spring reel (18).
5. The electrically controlled retractable flexible composite material mouth cover device according to claim 4, characterized in that: When the mouth cover needs to be closed, a pulling force is applied through the pull groove (8) to store energy in the spring drum (6) and close the mouth cover, and the electric-controlled ratchet assembly (7) is used to ensure that the mouth cover can only move outwards and will not retract.
6. The electrically controlled retractable flexible composite material mouth cover device according to claim 5, characterized in that: When the aircraft needs to open the mouth cover during flight, the electric-controlled ratchet assembly (7) is powered and activated, and the spring drum (6) rotates in the opposite direction and performs work, so that the composite mouth cover (2) is automatically retracted, and the composite mouth cover (2) is automatically opened and stored.
7. The electrically controlled retractable flexible composite material mouth cover device according to claim 6, characterized in that: The light core (9) is made of PMI foam board or aramid paper honeycomb.
8. The electrically controlled retractable flexible composite material mouth cover device according to claim 7, characterized in that: The light core (9) has a "trapezoidal" cross section. The light core (9) is continuous in the front-to-back direction to enhance the strength and rigidity of the mouth cover. Each light core (9) is softly connected through a glass fiber composite material, so that the composite mouth cover (2) can be freely bent within a certain angle range.