CN218317276U

CN218317276U - Integral cabin mouth frame

Info

Publication number: CN218317276U
Application number: CN202222689417.6U
Authority: CN
Inventors: 王哲; 李厚顺; 张世尧
Original assignee: AVIC First Aircraft Institute
Current assignee: AVIC First Aircraft Institute
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-01-17
Anticipated expiration: 2032-10-12

Abstract

The invention belongs to the technical field of aviation, and relates to an opening frame structure for an integral cabin, which comprises an inner side plate, an opening frame flat plate and an outer side plate; the dull and stereotyped first terminal surface of mouthful frame is connected with the terminal surface of interior plate, the opposite face of first terminal surface is the second terminal surface, the second terminal surface is connected with the terminal surface of outer panel, mouthful dull and stereotyped face of frame is the right angle with the face of interior plate, the face of outer panel is greater than 90 degrees with the contained angle of mouthful dull and stereotyped face of frame, integral numerical control processing passenger cabin mouthful frame structure, the appearance is accurate, surface quality is good, intensity rigidity is big, be difficult for producing the crackle, structure light in weight, this kind of wholeization processing does not need the frock clamp of panel beating combination, as long as according to the design digifax at numerical control processing, time saving and labor saving, and efficiency is improved.

Description

Integral cabin mouth frame

Technical Field

The invention belongs to the technical field of aviation, and relates to an opening frame structure for an integral cabin.

Background

The cockpit of the fighter plane is a cabin where a pilot works, an in-and-out cockpit enters from a large opening in the upper part of the cockpit, a transparent canopy is arranged above the cockpit, an opening frame is needed for the large opening in the upper part of the cockpit, the opening frame is a reinforcing part of the opening in the upper part of the cockpit and is a supporting part of the canopy, pneumatic load and pressurization load of the canopy are transferred, and additional load is caused by the large opening, so that the cockpit is an important part of an airplane structure. Most of the prior cabin opening frame structures are sheet metal assemblies, the factors of manufacturing, bearing, connection, weight reduction, cost and the like of structural parts cannot be fully considered, meanwhile, the development of a numerical control technology is not considered, cracks easily occur, and the strength and the rigidity are insufficient.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present application provides an integrated cockpit mouth frame structure installed in an aircraft cockpit, comprising: the inner side plate, the mouth frame flat plate and the outer side plate;

the first end face of the opening frame flat plate is connected with the end face of the inner side plate, the opposite face of the first end face is a second end face, the second end face is connected with the end face of the outer side plate, the plate face of the opening frame flat plate is in a right angle with the plate face of the inner side plate, and the included angle between the plate face of the outer side plate and the plate face of the opening frame flat plate is larger than 90 degrees.

Preferably, the inner side plate, the mouth frame plate and the outer side plate are of an integral structure.

Preferably, the integral cabin mouth frame is arranged on two sides of a driver, and the mouth frame flat plate is horizontally arranged.

Preferably, end plates are mounted on two side end faces of the integrated cabin opening frame.

Preferably, the outer plate is inclined in a direction approaching the inner plate.

Preferably, the included angle is 110 to 130 degrees.

Preferably, the outer panel is ruled.

Preferably, the integral cabin opening frame is made of aluminum alloy.

Preferably, one side of the integral cabin opening frame with the included angle is provided with a reinforcing rib, and the reinforcing rib is perpendicular to the length direction of the integral cabin opening frame.

The advantages of the present application include: the defects of low combined strength, heavy weight and the like of the traditional complex-shape metal plate are overcome, the fatigue strength of the opening frame of the cabin is improved, and the novel passenger cabin opening frame is simple in structure, light in weight and low in cost.

Drawings

FIG. 1 is a schematic view of an integral cockpit mouth frame construction according to a preferred embodiment of the present application;

FIG. 2 is a schematic view of the integrated cockpit mouth frame structure of the present application in relation to the position of the driver;

FIG. 3 isbase:Sub>A cross-sectional view A-A of the integrated cockpit mouth of FIG. 1;

fig. 4 is a right side view of the integrated cockpit mouth frame of fig. 1.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. 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 the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.

The present application provides a mouth frame structure for an integrated cockpit, as shown in fig. 1, 3, 4, comprising: an inner side plate 3, a mouth frame flat plate 4 and an outer side plate 7;

the first end face of the mouth frame flat plate 4 is connected with the end face of the inner side plate 3, the opposite face of the first end face is a second end face, the second end face is connected with the end face of the outer side plate 7, the plate face of the mouth frame flat plate 4 is in a right angle with the plate face of the inner side plate 3, and the included angle between the plate face of the outer side plate 7 and the plate face of the mouth frame flat plate 4 is larger than 90 degrees;

the utility model provides an integral cabin mouth frame structural installation is in the aircraft cabin, and the cabin mouth frame that finishes through the numerical control of aluminum alloy pretensioning plate is connected with the fuselage wallboard on the connection edge with the rivet, and the cabin mouth frame utilizes rivet or bolted connection to aircraft nose structural, with butt joint such as windshield, cabin cover, the position is in the driver both sides, the outside and the aircraft skin 8 overlap joint of cabin mouth frame, as shown in FIG. 2, the inclined outer panel 7 that it has, the pilot climbing of being convenient for gets into the cabin, and the mouth frame flat plate 4 that it has is the level form, and the pressfitting of the aircraft cabin cover of being convenient for is sealed.

In some optional embodiments, the inner side plate 3, the opening frame flat plate 4 and the outer side plate 7 are of an integral structure, the defects of low combination strength, poor fatigue and the like of the traditional sheet metal are overcome by the integral part, the strength and the rigidity of the cabin opening frame are improved, and the integral part is simple in structure, light in weight and low in cost.

In some alternative embodiments, the integral cockpit mouth frame is mounted on both sides of the driver, with the mouth frame plate 4 arranged horizontally.

In some alternative embodiments, end plates are installed on two side end faces of the integrated cockpit mouth frame, as shown in fig. 4, the end plates are used for blocking the two side end faces of the integrated cockpit mouth frame, so that the integrated cockpit mouth frame forms the shape of a groove, and the end plates become two side wall faces of the groove, so that the integrated cockpit mouth frame can bear large-opening bending, shearing and twisting load transmission, and the structural integrity can be ensured.

In some alternative embodiments, the outer side plate 7 is inclined in a direction closer to the inner side plate 3.

In some alternative embodiments, the included angle is 110-130 degrees, which can form a good connection relationship with the aircraft skin 8, and form a large space on the inner side of the integrated canopy lock frame, thereby facilitating the arrangement of the canopy lock system and providing good support rigidity.

In some optional embodiments, the complex external shape of the fuselage is processed according to a digital model to ensure the aerodynamic shape, and the outer side plate 7 adopts a ruled surface under the premise of ensuring the strength, so that the processing is convenient, wherein the ruled surface is woven by a straight line, and the straight line is called a straight generatrix of the ruled surface; in geometry, the surface S is textured, also called rolling, if there is a straight line for each point of S. Examples include a flat surface, a curved surface of a cylinder or cone, a conical surface with an elliptical matrix, a right-handed cone, a spiral, and a tangent that may curve smoothly in space; ruled surfaces can be described as a set of points swept by a moving straight line. For example, a cone is formed by keeping one point of a line fixed and moving another point along a circle. If there are two different lines through each point, then the surface is twofold. The hyperbolic paraboloid and one hyperboloid are doubly curved surfaces.

In some alternative embodiments, the unitary cockpit mouth frame is made of an aluminum alloy.

In some optional embodiments, the side with the included angle of the integrated cabin opening frame is provided with a reinforcing rib 6, and the reinforcing rib 6 is perpendicular to the length direction of the integrated cabin opening frame, so that the load transmission of large opening bending, shearing and twisting can be borne, and the structural integrity is ensured.

The advantages of the present application include: the defects of low combined strength, heavy weight and the like of the traditional complex-shape metal plate are overcome, the fatigue strength of the cabin opening frame is improved, the structure is simple in structure, light in weight and low in cost, the integrated structure is machined in a numerical control mode, the appearance is accurate, the surface quality is good, the strength and the rigidity are high, cracks are not easy to generate, the structural weight is light, the tool clamp for the metal plate combination is not needed in the integrated machining, and the efficiency is improved as long as the tool clamp is machined in a numerical control mode according to a design numerical model, time and labor are saved.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An integrated cockpit mouth frame comprising:

an inner side plate (3), an opening frame flat plate (4) and an outer side plate (7);

the first end face of the mouth frame flat plate (4) is connected with the end face of the inner side plate (3), the opposite face of the first end face is a second end face, the second end face is connected with the end face of the outer side plate (7), the plate face of the mouth frame flat plate (4) is perpendicular to the plate face of the inner side plate (3), and the included angle between the plate face of the outer side plate (7) and the plate face of the mouth frame flat plate (4) is larger than 90 degrees.

2. An integrated cockpit mouth frame according to claim 1 characterised in that the inner side plate (3), the mouth frame plate (4) and the outer side plate (7) are of one piece construction.

3. An integrated cockpit mouth frame according to claim 1 characterised in that it is mounted on both sides of the driver, the mouth frame plate (4) being arranged horizontally.

4. The integrated cockpit port frame of claim 1 where end plates are mounted to both side faces of said integrated cockpit port frame.

5. An integrated cockpit mouth frame according to claim 1 characterised in that the outer side plate (7) is inclined in a direction towards the inner side plate (3).

6. The integrated cockpit mouth frame of claim 1 wherein said included angle is between 110 degrees and 130 degrees.

7. An integrated cockpit mouth frame according to claim 1 characterised in that the outer panel (7) is ruled.

8. The integrated cockpit mouth frame of claim 2 wherein said integrated cockpit mouth frame is comprised of an aluminum alloy.

9. The integrated cockpit mouth frame of claim 2, characterized in that the side of the integrated cockpit mouth frame having the included angle has a reinforcement rib (6), said reinforcement rib (6) being perpendicular to the length direction of the integrated cockpit mouth frame.