CN209274876U - Doorway frame is integrally safeguarded in a kind of section - Google Patents
Doorway frame is integrally safeguarded in a kind of section Download PDFInfo
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- CN209274876U CN209274876U CN201821838501.7U CN201821838501U CN209274876U CN 209274876 U CN209274876 U CN 209274876U CN 201821838501 U CN201821838501 U CN 201821838501U CN 209274876 U CN209274876 U CN 209274876U
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Abstract
The utility model belongs to aeroplane structure design, and in particular to integrally safeguards doorway frame to a kind of section.For integrated machine plus part, mouth frame and stiffening plate are integrally-formed, reduce the redundancy weight that structure connection generates, using double Z " type section forms, longitudinal elements is connected by overlap joint with bottom plate for the mouth frame and airtight band mating surface.This mouthful of frame section is innovative design, under the premise of not increasing cost and weight, by the change of section form, improves section rigidity, increases the decrement with lid band, improve air-tightness；By the integrated design with stiffening plate, mitigate weight.
Description
Technical field
The utility model belongs to aeroplane structure design, and in particular to integrally safeguards doorway frame to a kind of section.
Background technique
Aircraft mouth frame is mainly used for open area reinforcement, provides enough rigidity for open region, weakens for opening plot structure
Compensation is provided, in the lid position for having airtight requirement, mouth frame also needs to guarantee air-tightness by reasonably designing.Traditional mouth frame is set
Meter, mostly metal plate-section combination form, whole covering milling form or utilization existing structure (the 10th, airplane design handbook
13.6 section related contents).Metal plate section combination form, cost is relatively low, and moulding process is simple, but identical weight provide rigidity compared with
Difference, and need more fastener connection, poor fatigue properties；Whole covering milling mouth frame, structure type is simple, fatigue behaviour
It is good, but smaller scope of application, designability are poor, and cross section parameter variation is limited to covering original depth；It is designed using existing structure
Mouthful frame, can lift structure efficiency to greatest extent, if but aperture position periphery do not arrange the structures such as reinforcing frame, cannot achieve.
This maintenance doorway frame, integral machine add meter, and structural parameters designability is strong, can preferably solve above-mentioned several structures
The shortcomings that form.
Summary of the invention
It proposes mouth frame integrated design new approaches, by the design of innovation section, increases the compression of mouth mount structure and band
Area improves air-tightness；By mouth frame and stiffening plate integrated design, further mitigate weight.
It designs a kind of section and integrally safeguards doorway frame as shown in figure 3, the machine being the integrated design adds a mouthful frame, gathered reinforcement
The function of plate and mouth frame can effectively reduce fastener quantity, and then promote fatigue behaviour, mitigate construction weight.Mouth frame section exists
Initial stage has selected the section form of Fig. 1, and gas leakage is serious when air seal test, passes through the type section " double Z " design of innovation, such as schemes
Shown in 2 sides, in identical construction weight and in the case where do not increase woollen size and cost, a mouthful frame section rigidity is effectively improved, is increased
Add the decrement with the airtight band of maintenance door, and then promotes the air-tightness of outward opening maintenance door.
Technical solution
Doorway frame is integrally safeguarded in a kind of section, adds part for integrated machine, mouth frame and stiffening plate are integrally-formed, can reduce structure
The redundancy weight generated, mouth frame and airtight band mating surface are connected using double Z " type section forms, longitudinal elements passes through overlap joint and bottom plate
It is connected, improves section rigidity, increase the compressing area of structure and airtight band, promotes air-tightness, reach requirement.
Mouth frame is that 7050 plate integrated machines add.
Technical effect
This mouthful of frame section is that innovative design, by the change of section form, mentions under the premise of not increasing cost and weight
High section rigidity increases the decrement with lid band, improves air-tightness；By the integrated design with stiffening plate, mitigate
Weight.
The utility model is in the full machine air seal test of aircraft, and compared with improving pre-structure, air-tightness is promoted significantly,
It is required much higher than relevant entry in test mission book.
Detailed description of the invention
Fig. 1 conventional cross-section integrally safeguards doorway frame schematic cross-section
Integrally safeguard doorway frame schematic cross-section in Fig. 2 the utility model section
Fig. 3 integrally safeguards in a kind of section doorway frame schematic diagram
Specific embodiment
The utility model is described in further details below.Referring to Fig. 3, Fig. 3 is that the new type section integrally safeguards doorway
Frame schematic diagram.Mouthful frame is that 7050 plate integrated machines add, and bottom plate has both dimension shape and booster action, section as shown in A-A figure,
Longitudinal elements is connected by overlap joint with bottom plate.
Fig. 2 show the fit form of mouthful frame Yu maintenance door band, innovates section design by " double Z " type, does not change
Construction weight improves the local stiffness of mouth frame flange, increases the exposure with band, promotes airtight band when gas-tight door punching press
Decrement, and then it is obviously improved air-tightness.
The structure is widely portable to that aircraft is medium-sized or small-sized opening, by the adjustment of cross section parameter, it can be achieved that with more
The matching of the kind airtight band of specification, air-tightness are outstanding.
Claims (2)
1. doorway frame is integrally safeguarded in a kind of section, it is characterised in that: add part for integrated machine, mouth frame and stiffening plate are integrally-formed,
The redundancy weight that structure connection generates is reduced, using double Z " type section forms, longitudinal elements is logical for the mouth frame and airtight band mating surface
Overlap joint is crossed to be connected with bottom plate.
2. doorway frame is integrally safeguarded in a kind of section according to claim 1, it is characterised in that: the mouth frame is 7050 plates
Integrated machine adds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821838501.7U CN209274876U (en) | 2018-11-07 | 2018-11-07 | Doorway frame is integrally safeguarded in a kind of section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821838501.7U CN209274876U (en) | 2018-11-07 | 2018-11-07 | Doorway frame is integrally safeguarded in a kind of section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209274876U true CN209274876U (en) | 2019-08-20 |
Family
ID=67600706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821838501.7U Active CN209274876U (en) | 2018-11-07 | 2018-11-07 | Doorway frame is integrally safeguarded in a kind of section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209274876U (en) |
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2018
- 2018-11-07 CN CN201821838501.7U patent/CN209274876U/en active Active
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