CN212797284U

CN212797284U - Airtight end frame structure in integral aircraft plane

Info

Publication number: CN212797284U
Application number: CN202020763381.XU
Authority: CN
Inventors: 龚丽娟; 石鹏飞; 王通; 张弛; 胡斌
Original assignee: AVIC Shaanxi Aircraft Industry Group Corp Ltd
Current assignee: Shaanxi Aircraft Industry Co Ltd
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-03-26
Anticipated expiration: 2030-05-09

Abstract

The utility model belongs to the technical field of the aviation, a airtight end frame structure in integral aircraft plane is related to, including whole machine with half frame (1), whole machine with half frame (2) down, butt joint band plate (3) structure. The integral plane airtight end frame connects the upper half frame (1) and the lower half frame (2) into an integral structure through butt joint band plates. The utility model discloses improve aircraft inner space's utilization ratio greatly, overcome shortcomings such as the assembly is complicated, the dismouting is inconvenient, the manufacturability is not good enough.

Description

Airtight end frame structure in integral aircraft plane

Technical Field

The utility model belongs to the technical field of the aviation, an airtight end frame structure in integral aircraft plane.

Background

The airframe of an airplane flying at high altitude is provided with a pressurized cabin, namely an airtight cabin, such as an air crew cabin of various airplanes, a passenger cabin of a transport plane, and a cargo hold of some transport planes. The airtight chamber must be provided with an airtight end frame. At present, the form of spherical frame is mostly adopted to current airtight end frame, adopts riveting such as sphere covering, radiation strip, architrave, angle bar and panel to form, and occupation space is great, because various radio, radar equipment of fuselage front end are intensive, for improving space utilization, adopts plane airtight end frame can save the fuselage inner space, satisfies the requirement of internal layout more easily.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes not enough among the prior art provides an improve airtight end frame structure in integral aircraft plane of aircraft fuselage inner space utilization.

Technical scheme

The utility model discloses an airtight end frame structure in integral aircraft plane for separate aircraft pressurized cabin and non-pressurized cabin.

The utility model provides an airtight end frame structure in integral aircraft plane, includes first half frame 1, second half frame 2, butt joint band plate 3 and constitutes, first half frame 1, second half frame 2 structure are the same, first half frame 1, second half frame 2 on be equipped with vertical and horizontal grudging post, first half frame and second half frame are connected through butt joint band plate 3 and are a whole frame.

The longitudinal and transverse vertical ribs divide the bottom plate into a plurality of small units, provide rigidity for the frame body, maintain the shape and enable the deformation amount to be minimum.

The bottom plate and the longitudinal and transverse vertical ribs are added parts of the integrated machine.

The longitudinal and transverse vertical ribs and the bottom plate are in transition through an R angle.

The upper half frame 1 and the lower half frame 2 are also internally provided with annular inner frames and outer frames, vertical studs are uniformly distributed between the inner frames and the outer frames, the studs maintain the appearance of the frames and the machine body direction, and simultaneously, airtight load is transferred to the machine body skin.

The outer frame edge is connected with the stringer into a whole through a wallboard stringer connector.

The edge of the outer frame is connected with the fuselage skin into a whole through riveting.

The butt joint belt plate 3 is connected with the machine body through a joint.

Technical effects

The utility model provides an airtight end frame structure in integral aircraft plane, its structure adopts the form that whole machine adds, has better manufacturability and bearing capacity. The integral machine with the plane frame is simple in structural form, not only avoids complex assembly links, but also saves manpower and financial resources, and improves bearing capacity and dismounting flexibility.

Drawings

FIG. 1 is a schematic view of the front upper half frame and the lower half frame of the forward heading frame of an aircraft

FIG. 2 is a schematic diagram of a structure of the upper half frame and the lower half frame of the aircraft in the forward direction frame by connecting the band plates

Detailed Description

The utility model relates to an airtight end frame structure in integral aircraft plane is explained in detail with the attached drawing:

the utility model provides an airtight end frame structure in integral aircraft plane, includes 1 whole machine and adds half frame 1, 1 whole machine adds half frame 2 down, 1 butt joint band plate 3. When the airplane flies at high altitude, because the air at high altitude is thin, personnel can not work and live normally, therefore, the airplane needs to be provided with a pressurizing cabin. The airplane pressurizing cabin is a pressurizing cabin with air pressure higher than the ambient air pressure, and is also called an airtight cabin. The atmospheric pressure in the airtight cabin is controlled by an aircraft environment control system to be higher than the ambient air pressure and is automatically adjusted according to the flying height so as to ensure that passengers have comfortable environment and working conditions when flying at high altitude. In addition, various radio and radar devices are dense in the machine body, so that the internal space of the machine body can be saved by adopting the plane airtight end frame in order to improve the space utilization rate, and the requirement of internal arrangement can be met more easily.

Claims

1. The utility model provides an airtight end frame structure in integral aircraft plane which characterized in that: the novel butt joint type frame comprises an upper half frame (1), a lower half frame (2) and butt joint belt plates (3), wherein the upper half frame (1) and the lower half frame (2) are identical in structure, vertical and horizontal studs are arranged on the upper half frame (1) and the lower half frame (2), and the upper half frame and the lower half frame are connected into a whole frame through the butt joint belt plates (3).

2. The one-piece aircraft planar airtight end frame structure of claim 1, wherein: the integral plane airtight end frame structure is also provided with longitudinal and transverse vertical ribs which divide the bottom plate into a plurality of small units.

3. A unitary aircraft planar airtight end bell construction as claimed in claim 2 wherein: the bottom plate and the longitudinal and transverse vertical ribs are added parts of the integrated machine.

4. A unitary aircraft planar airtight end bell construction as claimed in claim 2 wherein: the longitudinal and transverse vertical ribs and the bottom plate are in transition through an R angle.

5. The one-piece aircraft planar airtight end frame structure of claim 1, wherein: the upper half frame (1) and the lower half frame (2) are internally provided with annular inner frames and outer frames, and vertical ribs are uniformly distributed between the inner frames and the outer frames.

6. The one-piece aircraft planar airtight end frame structure of claim 5, wherein: the edge of the outer frame is connected with the stringer into a whole through a wallboard stringer connector.

7. The one-piece aircraft planar airtight end frame structure of claim 5, wherein: the edge of the outer frame is connected with the fuselage skin into a whole through riveting.

8. The one-piece aircraft planar airtight end frame structure of claim 1, wherein: the butt joint belt plate (3) is connected with the machine body through a joint.